I TEXAS NATURAL RESOURCE CONSERVATION COMMISSION PETROLEUM STORAGE TANK DIVISION ASSESSMENT REPORT FORM , , Addison Airport Fuel Farm Addison Road and Roscoe Turner 1 Dallas, Telas 75248
LPST: 91471 1 Registered Corrective Action Specialist Triad Onsite Systems, Inc. 2435 Southwell, Suite 1 P.O. DOl 59185 Dallas, Telas 75229·1185 (972) 241-7400 RCAS 00328 June 1997 I

i f TEXAS NATURAL RESOURCE CONSERVA nON COMMISSION PETROLEUM STORAGE TANK DIVISION ASSESSMENT REPORT FORM Addison Airport Fuel Farm Addison Road and Roscoe Turner Dallas, Texas 75248
LPST: 91471 Registered Corrective Action Specialist Triad Onsite Systems, Inc. 2435 Southwell, Suite 1 P.O. Box 59185 Dallas, Texas 75229·1185 (972) 241-7400 RCAS 00328 June 1997 I '.

TEXAS NATURAL RESOURCE CONSERVATION COMMISSION PETROLEUM STORAGE TANK DIVISION CORRESPONDENCE IDENTIF1CATION SHEET Date: June 5. 1997 LPST ID No.: _-2.9...,14tL7..1.1_____ Site Name:
Addisog Airport Fuel Faun Facility 10 􀁎􀁏􀀮􀀺􀁟􀀮􀀮􀀮􀀮􀁉􀁏􀁏􀁏􀁏􀁏􀀮􀁍􀀮􀀡􀀽􀀲􀁯􀀮􀀺􀀿􀁾____ Site Address: Addsion Road & Roscoe Turner Pallas Texas This checklist must accompany all
correspondence submitted to the RPR Section and should be affixed to the front of your submittal as a cover page. Please check the appropriate box for the type of correspondence which
you have submitted to the RPR Section. Check all boxes that apply if you are submitting more than one type of correspondence. If you cannot find an 􀁳􀁥􀁣􀁴􀁩􀁯􀁮􀁾􀀠0 Initial Abatement
(1) 0 Tank Removal (2) 0 Excavation (3) 0 Waste Treatment (4) a Sile Assessment (5) 0 Aquifer Testing (6) 0 VES/Sparge Testing (7) 0 Qtrly. GW Monitoring (8) 0 CAP Prep. (9) a GW Extrac./Treatmenl
(10) 0 Soil Vapor Exlrac. (11) a Operation & Main. (12) 0 Site Closure (13) 0 Plan A Risk Ass. (14) 0 Plan B Risk Ass. (IS) a Semi-annual GW Mon. (16)+ a Annual GW Mon. (18) 0 Product
Recovery (19) 0 Other proposal o Assessment Report Form (TNRCC"()562) 0 LPST Case Questionnaire a Product Recovery Report Form (TNRCC-OOI6) 0 Release Report Form (TNRCC"()621) a Sile
Closure Request Form (TNRCC..()Q2S) 0 Monitoring Event Summary and Slalos Report (TNRCC-OOI3) o Final Site Closure Report Form (TNRCC..()Q38 a Priority 4 LPST Case Closure Request Form
(TNRCC-0461) Cl Other form Cl Tank ClosurefRemovai • Plan A Risk Assessment 0 Annual Groundwater Monitoring Cl o&MfPerformance Mon. 0 Plan B Risk Assessment 0 CAP lDsta1lationfModification
o DivesliturelPhase I ESA Cl Conective Action Plan (CAP) Cl AquiferfPilot Test Results Cl Off-site access assistance a Deadline Extension Request o Tank tightness test results a Request
for State-Lead o Request for LPST Waste Code o Class V Reinjection Request a Notice to Owner/Operator for CAS Services a Petroleum-Substance Waste Manifest o Notice of Continuation of
of Groundwater MOnitoring 0 Underground Sturage Tank Registration Form o Notice of Continuation of Operation and Maintenance a Aboveground Storage Tank Registration Form o Other (anything
that does not fit ioto one of the categories above) ______________ for semi-annual monitoring and annual report (Proposal Activity 17) has been For semi-annual monitoring. use Proposal
Activity 16. 
· j I attest !bat all work bas been conducted in accordance with accepted industry standards/practices and adhered to TNRCC guidance and rules. I certify that I am aware that misrepresentation
of any of the above claims is a violation of 30 T AC 33.4453(b)(I)(E) and !bat this violation may result in the disciplinary actions set forth in 30 TAC 334.453 and or 334.463 and 334.465.
If a proposal is attached for preapproval. has the proposed work, in part or in whole. already been performed or in progress? 0 Yes 0 No If yes, what work? !riad 􀁑􀁯􀁳􀁩􀁾􀁾􀀠􀁓􀁘􀁾􀁴􀁭􀀻􀁄􀀺􀁩􀀠Imt
00328 Allril 21. 1228 (Registered Corrective Aetion Spet.:itIi't) (RCAS Reg. No.) (Expiration date) ,1-r. If'? 7􀀨􀁓􀁩􀁧􀁮􀁡􀀿􀁧􀁾􀀠t;(Date) 􀀨􀀲􀁚􀀲􀁬􀀲􀀡􀀡􀀺􀁉􀀭􀁚􀁾􀀠(272l211-1!!:J!!
(Telephone I) (FAX If) MiDSi\ A B8:i::2Q 􀁏􀁏􀁚􀁾􀀱􀀠Al!2lIsI1!l. 1221 (Project Maneger) (CAPM 􀁒􀀮􀁾􀀮􀀠No.) (Expiration date) 􀁾􀁾􀂷􀁴􀀲􀀮􀀴􀁯􀀠I'1QJ (Signature) (Dale) 􀁾􀁾􀀠􀀨􀀲􀀷􀀲􀁬􀀲􀁾􀀩􀀭􀀷􀁾
􀀠(2Z2l2:tl-lli!! (Telephone I) (FAX I) By signature below, I certify that documents checked above are included, SiIIll Sll!1!D: A!idiSQD AiJ:llQIl Q( Llllllli 􀁬􀁡􀁾􀀮􀀠(Company) .""'\􀀨􀁊􀀻􀀺􀁩􀁾􀁬
􀁝􀁊􀁾􀀺􀁾􀀠!>J (90/J (7T 􀁾􀁾􀀠;;(S;J.turel (I). (212l218-zm (272l21S-2:tHi (Telephone I/) (FAX /I) 
TEXAS NATURAL RESOURCE CONSERVATION COMMISSION PETROLEUM STORAGE TANK DIVISION ASSESSMENT REPORT FORM This form should only be submitted when all information has been obtained as outlined
in the document entitled Guidance for Risk-Based Assessments at LPST Sites in Texas. If the Table of Contents (page 2) is not fully completed, the TNRCC will return this form to the
responsible party without review. This document must not be altered in any manner. Requested information denoted with ••• is beyond the minimal requirements for a site assessment as
defined by 30 TAC 334.78Ia)(51. Attach a workplan(s) and preapproval request(s) for those activities on sites eligible for reimbursement for the next appropriate activity. LPST 10 No:
91471 Facility 10 No: 00022 Site priority: 4.2 Facility Name: AddisQn Airport Fuel Farm Facility Address: 6ddisao Baild ilod 􀁂􀁡􀁓􀁾􀁴􀁬􀀡􀁬􀀠Imml[ City: Dallas State: Texas Zip: 75248
RP Name: Mdisoo 6iromt at !exes, Inc. RP Address: 4505 Claire Chennault City: Dallas State: Texas Zip: 75248 I certify that all work has been conducted in accordance with accepted industry
standardsfpractices and adhered to TNRCC guidance and rules. I certify that I am aware that misrepresentation of any of the above claims is a violation of 30 TAC 33.4453(b)(l)(E) and
that this violation may result in the disciplinary actions set forth in 30 TAC 334.453 and or 334.463 and 334.465. Idad 􀁑􀀡􀁊􀁾􀁩􀁴􀀡􀁬􀀠􀁓􀁾􀁾􀁬􀁾􀁬􀁄􀀺􀀾􀀮􀀠􀁉􀁮􀁾􀀮􀀠􀁂􀁾􀁁􀁓􀀠􀁑􀁑􀀳􀁾􀀡􀀮􀁬􀀠
􀁁􀁑􀁲􀁩􀁬􀁾􀀷􀀮􀀱􀁬􀁬􀁬􀁬􀀡􀁬􀀠(Registered Corrective Action Specialist} IRCAS Reg. No.1 (Expiration date) 􀁾:I., /,..,. /'􀁻􀁓􀁩􀁧􀁮􀀮􀁴􀁵􀁾􀂥􀀠 IDatel tl 19Z21 􀀲􀁾􀀱􀀭􀁚􀁾􀁑􀁑􀀠
19Z2l 􀀲􀁾􀀱􀀧􀁚􀁾􀀳􀁦􀁬􀀠IT aleph one II IFAX #! 􀁍􀁡􀀨􀁩􀁾􀁡􀀠6. 􀀶􀁡􀁾􀁾􀀡􀁬􀀠􀁾􀀶􀁅􀁍􀀠QQ251 􀀶􀀱􀀮􀁵􀀻􀁬􀁵􀁾􀁴􀀠1Q. JllSZ {CAPM Reg. No.1 (Expiration date) {Project Maneger! -A
􀁬􀀭􀀱􀀱􀀷􀁃􀁕􀁴􀀬􀀱􀀭􀀮􀀿􀀼􀀢􀀬􀁾􀀠. tJ-:-􀁉􀀭􀁾􀀠/>A 􀁾􀀬􀀠􀁲􀁾􀁾􀀠if, l'771 {SignSilJrel {D.4j (9Z2! 􀀲􀁾􀀱􀀭Z4QQ (llZZl 􀀲􀁾􀀱􀀭􀁚􀁾􀀳􀁦􀁬􀀠{Telephone II {FAX II By signature below,
I certify that I have reviewed this report for completeness. 􀁓􀁾􀁬􀁄􀀠SIUaa MdiS!lO 6icQoa of IelSiI&. loc. {Name of Responsibfe Party Contact} (Company' ral:;;7q7{Dote! '􀁻􀁓􀁩􀁾􀀠􀁾􀀠
19Z21 􀀲􀁾􀀡􀁬􀀭ZZ33 ISZ21 􀀲􀁾􀀡􀁬􀀧􀀲􀀡􀀱􀁬􀀠fl {Telephone II} {FAX HI mailing address: TNRCCfPST DivisionfRPR Section MC 137 P.O. Box 13087 Austin, TX 78711-3087 TNRCC·0552 Ill·Ol-9S!

•• • SITE ASSESSMENT _PST 10: 91471 Site Name: Addison Airport Fuel Farm Site Location: Addison Road and Roscoe Turner, Dallas, Texas TABLE OF CONTENTS Item TItle Page Worksheet E Executive
Summary ..•••....•••..••••....•••...•••.••• 3 Worksheet 1.0 Site Description • . . . . . . . . . • . . . . . . . . . . . • . . . . . • • . . . . • . . . 4 Worksheet 2.0 Land Use .....•...........••..
..••...••••..•••••..• 5 Worksheet 3.0 Water Well Inventory ..•.•....•....••.............•.... 6 Worksheet 4.0 Receptor Survey ..•..........••.....•....•••.....•• 7-8 Worksheet 5.0 Site
Assessment History ........••....•.•....•....••... 9 Worksheet 6.0 Tank System Characterization .. . . . . . • . . . • . . . • • . . . . • • . • •. 10 Worksheet 7.0 Soil Assessment ..................
........ . .. . ... 11-12 Worksheet 8.0 Groundwater Assessment ............•.....•........ 13·14 Worksheet 9.0 Vapor Assessment.. . . . . .. . .. .. .. .. . . .. . . .. • . . . . . .
... 15 Worksheet 10.0 Surface Weter Assessment ..........•.....•...••......• 16 Worksheet 1 1 . 1 ·5 Plan A Evaluation. . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . •.
17·22 Worksheet 12.0 Site Prioritization . . . . . . . . . . . . • . . • • • . . . • . . . . . • . . . .. 23-25 Abbreviations ....••...••..................................•... 26 Attachment
1 Attachment 2 Attachment 3 Attachment 4 Attachment 5 Attachment 6 Attachment 7 Attachment 8 Attachment 9 Attachment 10 Attachment 1 1 Attachment 1 2 Attachment 1 3 Attachment 14 Attachment
1 5 Attachment 1 6 Attachment 17 Attachment 1 8 Attachment 1 9 Attachment 20 Site plan illustrating location of entire former/current USTIAST system(s). subsurface utilities, limits
of excavation. system removal or repair, sampling points. and surface cover ••••••••••••• 􀁾􀀠••••••• '" ••• Vicinity map or aerial photograph illustrating surrounding land use and receptors
identified within a 500·foot radius •....•••...•••••..• USGS topographic map with plotted water well locations ..•.....• Copies of completion details and and water well drillers reports
for located wells (0.5 mile radius) ..•...•.••••...•...••••.••••••...• Site plan(s) illustrating former/current UST/AST system(51 and all (i.e., soil, groundwater, vapor, surface water)
sampling points ••.....••. Soil contaminant concentration maps ........•.•...•..•••... Groundwater gradient map ......•...........•.•...•.••... Groundwater contaminant concentration
maps ................ . Biodegradation Indicator Distribution Map' •......•••...••..•. Soil Gas Survey Maps' ..•.•......••......••.....•..•••. Vapor Contaminant Concentration Map ••.•••.•••••.••.••••
•. Surface Weter Contaminant Concentration Map ...•.••..•••..•. Surface Weter Flow Map ............................... . Soil boring logs to include: lithology, field screening, sample
locations, well completion details, TNRCC Form 0019 .••..•..•..••••.... Summary table of all soil, groundwater, surface water, and vapor analytical results, including from all sampling
pOints, and tank removal or repair activities ....... ....... 􀁾􀀠.•..... 􀁾􀀠..........•........•... Summary tables of all gauging data, water level data, NAPl thickness and corrected
water level data and well screen interval lif applicablel • Copies of all analytical reports including complete chain-of·custody and quality assurancefquality control documentation .•.••....•...•••
Copies of manifests, waste receipts. or other documents necessary to document waste dispOSition •....••••.....••..•••....•.•.. Photographic documentation ••....••.•.••..•••....•••...•.
Proposal for next appropriate action and/or Site Closure Request 1.' Completed••••• • DNA. •DNA. • (., Enclosed • • • • • • DNA. DNA. DNA. DNA. • DNA. DNA. • • DNA. • • •• Attachment
21 Geophysical survey • , TNRCC-0662 (11-01 ·96) 2 
SITE ASSESSMENT _ i ) . I .PST ID: 91471 Site Name: Addison Airport Fuel Farm Site Location: Addison Road and Roscoe Turner, Dallas. Texas EXECUTIVE SUMMARY Check all applicable boxes.
USTfAST System Status: _ Active 0 Permanently Removed from Service o Temporarily Out of Service 0 Temporarily Indefinitely Out of Service (Variance Due Date: Current site 􀁉􀁾􀁮􀁤􀀠use:
o vacant. indus.lcoml. 0 residential 0 agriculmral 0 recreational. USTfAST Facility fAirport Fuel Farm Sources of Release: 0 tank(s) 0 piping • spills 0 dispenser 0 Other: Substance
Released: o gasoline • diesel 0 waste oil 0 hydraulic fluid • A V gas • jet fuel Cl Other: Site Assessment History: • PreliminaryfLSA 0 Groundwater Monitoring 0 Remedial Action 0 Emergency
Response Affected environmental media: • surficial soil «2 ft. BGS) • soil (2 to 15 ft. BGS) Cl soil (> 15 ft. BGS) o groundwater 0 surface water 0 air Identified affected receptolll:
0 water wells Cl basementslstrucmres 0 habitat 0 building 0 underground utilities 0 surface water 0 exposed contaminated soil 0 Other Distance from site (ft.): Samples collected • yes
0 no Abatement initiated: 0 yes • no TyP": Identified potential receptors: CJ water wells 0 basementsfstrucmres 0 habitat 0 building • underground utilities Cl surface water • exposed
contaminated soil 0 Other Distance from site (ft.): Depth to filllt encountered groundwater (ft.) BGS: 0 >50 015·50 00-15 N/A Presence of NAPLs (ft.): o sheen 0 0.1"().5 ft. 00.5-2 ft.
02-5 ft. 0 >5 ft.• none Recovery Initiated: 0 yes 0 no Current NAPL extent: 0 on-site 0 off-site N/A Dissolved-phase extent: CJ on-site • off-site 0 unknown Groundwater beneficial use
category: CJ Cat. I 0 Cat. II Cl Cat. m CJ Cat. IV • Soils only o.f'rected, regional beneficial use can not be established. Contaminants of Concern Exceed TlIIlIl't Concentmtions of
Affected media: Soil (Worksheets 7.0,11.1-5): • yes 0 no Groundwater (Worksheet 8 & 11.1-4): 0 yes • no Vapors (Worksheet 9.0): 0 yes • DO Surface Water (Worksheet 10,0): 0 yes If no
Site Priority: l. l. 2. 3. 4. l. Recommended Actions: Cl a) Affected Receptors Identified -Propose additional corrective action and/or monitoring progmm. o b) Site does not e«ceed Plan
A criteria -Submit site closure request IOrm. o c) Site does DOt e«ceed Plan A criteria -Propose verification groundwater monitoring progmm. o d) Site exceeds Plan A criteria -Propose
corrective actioo to achieve Plan A criteria • • e) Site exceeds Plan A criteria -Pro se Plan B risk assessment and/or evaluation. TNRCC·0562 (11·01'()5) , 
SITE ASSESSMENT __ '>ST ID: 91471 Facility Name: Addjson Ajrport Fuel Paw Address: AddjsoD Roasl. Dallas. Texas Cross-Street: Roscoe Turner City: DaUas 􀁃􀁯􀁵􀁮􀁾􀀺􀀠􀁾􀁄􀁾􀁡􀁵􀁬􀁬􀁍􀁾_______________
__________________ Current Site Water Supply: ..IT.Q0wnwn.J:Q!lf,t,A,,dllldll;SillOnn_________________________ Notes: The Town of Addison purchases its water from the City of Dallas.
which receives Its water from lakes and surface reservoirs. Discuss any significant otlSite or adjacent Terrain: • Flat 0 Steep 0 Variable significant topographic feature. Ground Surface
Slope DirectionSlS.YL. Grade (ft.lft.)Q"".OO"",7L-_ Discuss recent (i.e•• within Ihe past year) Average Annual Rainfall (in.): .!;40tIL.__ extreme dimatic changes. Discuss engineered
modificntions 10 floodplain slalus or designation. Within 100 Year Floodplain: 0 yes I • no 
SITE ASSESSMENT _ PST 10: 9147 LAND USE -Past use of site: • CommerciallIndustrial -Past Predomi!lllnt Land Use of the Area: o Residential • CommerciallIndustrial o Agricultural 0 Residential
o Recreatio!llli o Vacant o USTfAST Facility Describe: Site has operated as Addison Aimort since 'Pproxirnately 1960 -Current use of site: • ColDlllerciallIDdustrial • Current Predominant
Land Use ofthe Area: o Residential • CommereiallIDdustrial o Agricultural o Residential o Recreational • Type of Residential Area: o Vacant o MinorityfLow Income 0 Non-minorityfLow Income
o UST/AST Facility o Other Describe:Addjson Aj[pOrt • Future use of site: • Commereia!lIndustrial • Future Predominant Land Use of the Area: o Residential • Commercial/Industrial o Agricultural
o Residential o Recreational o Vacant o USTfAST Facility Describe: Site wiU continue to operate as commercial airport Facility Name & Ty.pe·Million Ajr fuel Egan Address: I S!\09 Addison
Road Facility No.:03036 I.pST IP No.9!!890 QwnerlQperator:RR Investments. Investments. Inc. EaciIity Name & IJIll":Mj'-'iQU Aire Facility Address: 15497 Addison Road EgcjJjty No. :015460
LPST IP No.9U19 OwnerlQperator:E U.A. Egcility Name & IJIll":Texas Pro Air Egciljty Address: 15407 Addison Road Egcility No. :020294 LEST IP No.9U19 Owner/Qperator: Addison Aix:port
Additional facilities may be listed and !loted on Attachment 2. Four (4) more facilities listed in Attachment 2. 
SITE ASSESSMENT __ .'ST ID: 91471 WATER WELL INVENTORY Total No. Active No. Downgradient Direction Total No. Active No. No. Screened in Affected Zone PubllcJMunicio.J: 1 0 0 0 0 Industrial:
0 0 0 0 0 Domestic: 0 0 0 0 0 Agricultural: 0 0 0 0 0 Closest Downgradient Well Closest Screened Within D d'owngra lent Water WeII Affected Z one Well NoJDesijZl1ation: NIA N/A Distance
from Site (ft.): NIA N/A Total Well Depth (Ii.); N/A N/A Current Use ofWater: N/A N/A Screened Interval below Ground Surface 1ft): NIA N/A Year Constructed: NIA N/A Comme..m: (Include
discllSsion ofany ordurances which prevenl or influence the jurure instal1a1ion ofwaler wells at the sile or surrounding area.) ilL______________________----' TNRCC<l562 (11·01·95) 6

SITE ASSESSMENT __ 􀁾􀁾􀀷􀀧􀀺􀀢􀀢􀀰􀁾􀀺􀀺􀀭􀀺􀀷􀀺􀀺􀀽􀀠RECEPTOR SURVEY Nearest Underground Utility Name" City of Addison sewer TYpe' SloOD DO$lb of Utili!y: Unknown Distance & 'Direction
Fcom Affected Zone; Appro, 3Q' east of site Nearest Downgradient Utility Name' City of Addison Twe; Water main Dewb oflltjljty' Unknown Distance & Pirection From Affected Z0Q8iAp,pmx3Q'sQutheast/site
Nearest Building Name: Addison Airport J)pe: Storase warehouse Distapce & l)irectiop From Affected Zone: Appro, 100' wlsw Nearest Downgradient Building Name: Addison Ai!J!Ort 1):pe:
Storage warehouse Distance & Direction From Affected Zone: AllpIOX 100' w/sw Nearest Surface Water Name: While Rock Creek Im: Creek Distmoo & Direction From Affected Zone' Approx 2000'
east Impacted Surface Water Name: NIA Distance & Direction From Affected Zone: Nearest Downgradient Surface Water Name' White Rock Creek Distance & Pirection From Affected Zone: AWro,
2000' east Discuss other receplors and indicate on Altac/unenl 2. If affected discuss abatement measures. Discuss nearest and OIher rteeplors and iluiicale on Attachment 2. Buildings
should include residences. schools, day care facility, nursing heme. elc. Ifaffected complete Workshee/lO.O. Describe potential/or affected storm. walrr or groun(/'WOter discharge to
surface water feature. 'TNRCCo0562 􀀨􀀱􀀱􀁾􀀱􀂷􀁑􀀵􀀱􀀠 7 
SITE ASSESSMENT • PST 10: 91471 Presence ofSensitive Habitat Site located witbin or affects a sensitive or protected habitat? 0 yes (explain below) • no Name" Location; Discussion: Provide
the habitat type (wildlife sanctuary. wetlands. etc.), condition, regulatory authority, and other in/ormation relative to habitat 􀁣􀁨􀁡􀁲􀁡􀁣􀁴􀁥􀁲􀁩􀁬􀁬􀀱􀁴􀁩􀁯􀁮􀁾􀀠Observed or Potential
Impacts Recommended Action • None observed or anticipated No action required o Potential for Significant Impact Additional Corrective Action Required (See Attachment 20) o Significant
Impact Observed Additional Corrective Action Required (See Attachment 20) Comments: Discuss any emergency abatement and continued co"ective action. 
SITE ASSESSMENT __ _PST ID: 91471 Typical site activities to be recorded include: • Preliminary/Limited/Comprehensive Site Assessment • Emergency Response • Risk/Exposure Assessment
• Remedial/Corrective Actions Types of sampling to be included:. Soil • Groundwater • Surface Water • Vapors Date Completed 9/16/87 . i 11/24/87 12/12 and 12/13/91 Description of Activity
Hand augered three shallow borings Installed 12 subsurface borings and converted five to groundwater monitoring wells. Emergency response -Tank floated during upgrade Sampling and Testing
Soil and water testing for inspection and monitoring. No laboratory analysis • Soil sampling and analysis for TPH only. No true groundwater encountered. Four soil samples collected and
analyzed for BTEX and TPH. Result/lmpactlT arget Cleanup Water at 3" below surface. Strong fuel odors in all borings. Maximum concentration of TPH in mg/kg: B-2: 1 O,OOO{tank field)
B-1: 2.530 (outside tank field) Max. concentration in mg/kg (tank fill materialJ: B -27.480 E-3.138 T -1.185 X-29.126 TPH ·12.378 TNRCC-0562 (11·01·95) 9 
SITE ASSESSMENT _ I PST 10: 91471 UST/AST SYSTEM CHARACTERIZATION Release,lnformation: ':j;'::;,,', USTIAST SJSIIm Stttus: o ActNe 0 Pmnanenlly Ranovcd From Se.vice o Temporarily Out
ofSc:tvi<e o 'Ihnporarilyllnde1initdy OutofSe.vice (Due 0.11::Mabod orrdeasedlsawe<y: --o usrRfm<MU 0 Release I:lcUx;OOn Equipment o DMsIiblre Assessment 0 hM:nfory ConIroI o SyslOm
T>gt:une.s Tes1ing 0 Other Surlitce spills Subsmoce roIeased (check all !bat apply), o Gasoline 0 Diesel 0 Wls!e Oil o,w Gas 0 Jet Fuel 0 H)dmllllc Fluid o Other 􀀦􀁷􀁲􀁥􀁯􀁲􀁾􀁛􀁾􀀧􀀻􀁳􀁾􀁾􀁩􀁬􀁩􀀩�
�􀁛􀁾􀁾􀁄􀁾􀁢􀁯􀁯􀀻􀀻􀁾􀁾􀁾􀁾􀀧􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭o SpillsIOYedills 5tH spill' ongoing mills o Piping o Dispe.nsa" 011mk o Other Remowllnformation o.u:(s) ofn:rn<Mll(s):__..JN"'I"A______________
_ 􀁾ofn:rn<Mll: o Rfm<MU from the ground 0 Closure in place 'M.... in tinkhoJd during """""lion? 0)'" 0 no Depth of"".... in tinkhoJd (BGS): o <511. 05-10 11. 011-1511. 0 None NAPL:
0)'" 0 no Thickness (lL): __ 'Mter E",,,,,,,ted from tinkhoJd: 0)'" 0 no \blume (gil.): Groundv.ater recl1argOO inll> tinkhold: 0)'" 0 no Depth (lL BGS): Slalus of_n(s): o Open wi1h
"".... 0 OpenIdry o BscldiII<d wi1h impervious = o BscldiII<d with no impervious """" 􀁾of fill maleriaI: o UnlXeated bacldill 0 Treated back:!ill 0 Other o Clean fiIl-gmvel 0 Clean
fiIl-sandy/clay Einergency respanse in 5191: Ol'8oing surfoce spi1Is during US[jII-up. O1her Corrments: f\mide /he InaUlnum contaminalll cOllCen1raIions miIIigroms per kilagroms Vnglkfl)
qfUJlITemed bocI¢IJ relJJTlWi to /he 1l1J1ldw/d(s): 􀁾􀁟TEX_ TPH_ CJTHE:R_. !fa ne.v USfIAST .!)ISfe7n HaS .1StlJ!Jd describe ., indicaIe on ;fItoc/rmmJ J. "', ,'; :.:i';;' ", " ,'j\,;;,:,-.
Iin native soils upilri " . ,',' 􀀢􀁾􀀬..,, ,2, lot Chemical Sample Date Sample Laboratory Maximum of Location/Depth Method Concentration (' Limit Benzene Total TPH Metals VOC Oth"-r
. 􀁾􀁔􀁎􀁾􀁒􀁾􀁃􀁾􀁃􀁾􀁾􀁾􀀵􀁾􀁥􀁾􀀲􀁾􀀨􀁾􀀱􀀱􀁾􀀮􀁏􀁾􀀱􀁾􀀭􀁾􀀹􀀵􀁾􀀮􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭�
�􀀭􀀭􀁾􀀱􀀰􀀠
SITE ASSESSMENT .'ST 10: 91471 SOIL ASSESSMENT SOi{DATA COLLECTION AND EVALUATION Number of 50iI sampling points: =46 to define horizontal extent of plume for possible future remediation.
Metbod of determination: 0 Direct Push 0 Borings 0 Other: Surface cover over affected soil zone (cbeck all tbat apply): o Concrete 0 Asphalt 0 Gravel 0 Dirt 0 Grass 0 Other: Percent
of affected soil zone covered with impervious cover: 00-25 % 025·50 % 050·75 % 075·100% If there is no impervious surface cover, is there public access to Ihe affected surface (0·2 ft.)
soil? 0 yes 0 no Affected soil zone thickness (ft.): 6.S' "Affected soil zone surface area dimensions (ft.): 330' x 180' Maximum depth of contamination exceeding appropriate Plan A risk-based
levels: 6.5' ft.BGS "Estimated volume of 50il exceeding Plan A target concentration (yd'): 1000 "Minimum distance from affected soil zone to property boundary: 0 0-10 ft. 0 10-50 ft.
0 50-100 ft. o 100-300 ft. 0 300-500 ft. 0 >500 ft. 0 Extends beyond property boundary Waste disposal: 0 Landfill o On·site treatment o Off-site treatment o Other o Pending o None Maximum
level of contamination detected in native soils (mg/kg): Chemical of Concern Benzene Toluene Sample Date 9/5196 9/5/96 Sample Depth (ft.) 3.5 -5.0 1.0 -3.0 Sample ID B -J B-3 Laborarory
Method Detection LImit 1.0 0.1 􀁾􀁾􀀮􀀠15.0 1.04 Targtt Cleanup Goals t 0.13 69 : I : Ethylbenzene 9/5196 3.5 -5.0 B-1 1.0 85.S 160 Total Xvlenes 9/5196 3.5 -5.0 B-1 1.0 209.0 568 TPH
9/5196 5.0-6.5 B-3 100 32,900 NIA Total Lead Nanhthalene 3flSn 3.5 -4.25 B-3A 0.201 <0.201 389 Other Other -.. Beyond the minimal requirements for a Site Assessmenl as defined by 30
TAC 334. t Rei'... to Workshefts 11.1-5 and Risk-Ba<ed Comctive Action or Leman SIDra e Tank SiIles RG-36 Table A-I. Note: Geophysical survey was perl"onned as part ofthe soil assessment
to assist in dellning the horizontal extent of contaminalion. This survey is included as Attachment 21. TNRCC-0562 (11-01·S51 11 
-·-i SITE ASSESSMENT ?STID: 91471 Parameter Result Depth Location/Sample 10 Method of Detennination Dry Bulk Density (g/m'): Effective Porosity (%): Fraction Organic Carbon (gIg): Intrinsic
Permeability (em'); Water Content (cm'lcrrl): Other .. Present spatial distribution of 0" Co., CR.., etc. levels on map. (Attachment 9) TNRCC-OS62 (11-01·95) 12 
SITE ASSESSMENT lPST 10: 91471 GROUNDWATER ASSESSMENT 00 Of no, complete omy the Beneficial GroUlld_ Use Categories on thisGroUlld'Mlter afrected by release: 0 yes • Worksheet.) He y
rogeo ogV upper Most Zone other Depth to ground'Mlter (ft.) Aquifer tvoe (Perched, confined, unconfined) *Estimated A.quifer tbicknes. (ft.) *Water level f1octuations (± ft.) Gradient
(ft.lft.)!Direction //"Saturated hydraulic conductivity (ft.lday) * Approximate well vield (1!lXI) Lithology Geologic Formation Major/minor aquifer name Total dissolved solids (mgl!)
: Confining laver depth (ft. BaS) Confining layer thickness (ft.) Mark the potential beneficial use category for the impacted zone and indicate the selection criteria. Complete the I
i ! appropiate worksheet 01.1-5) fur the Category indicated. o CategOry I o Category Il o Category III o CategOry IV ClImpacIed or_ o Afli:dOO 􀁾"'00 Cl Afli:dOO gro_:rone Cl Afli:dOO
􀁾􀀢􀀬􀁮􀁥1DS """"supply \\dI(s)'!: 1DS <3,000 ppm.1Yl!l no bene5cial uret is docum<ntfd within O.S miles miles of!he site. 1DS 3,000 -10,000 ppm.1Yl!l no bene5cial _twithin 0.5 miles
of!he sile. :> 10,000 ppm,l!Il>I no bene5cial uret is docum<ntfd within 0.5 miles of!he site. OR o Afli:dOO 􀁧􀁲􀁯􀁾"'fie 1DS <3,000 ppm. J!IlI! "",Ie< v.eII(s)'!: or v.aIer supply spring
within 0.5 miles of!he silt. OR • Soils on/y al'!i:d!xI. R<gional groundv.ale< bene5cial uret cannot be csfablishcd. OR o1DS 3,000 -10,000 ppm, mI bene5cial uret is docurn",tfd within
!he 0.5 miles of!he site. OR Cl \\ell yield <150 gpd (i.e., aJi:cted 2xme: is not oonsidered to have. bene5cial -n t If construction details of""'terv..ill(s) are unknown or can not
be proven. the interval is assumed to be connected. t Applies to. drinking water source producing from the same or connected interval .. the affected groundwater zone. On-Site *Beypnd
property Boundary (provide well 101 (pl'Ollide weD 10) Number of Sampling points: Number of permanent monitoring wells: Static _levels aboYe screened iDIetvaIs: 0 yes 0 no 
SITE ASSESSMENT • PST 10: 91471 "'hriBl extent of dissolved-phase plume (ft"}: __ "'Distance from edge of plume to property boundary ifon-<lite: 0 < 10 It. 0 10-50 ft. 050-100 ft. 0
100-300 ft. 0 >300 ft. j "'Distance from property boundary to edge ofplume if off-site: 0 <10 It. 0 Io-SO It. 0 50-100 ft. 0 100-300 ft. 0 > 300 It. I 􀁪􀁾􀁾􀁩􀀱􀁬􀁩􀁦􀀧􀁤􀀶􀀻􀀠, ','
􀀺􀁾􀀻􀀺􀀺􀀺1 in nroll 􀁾􀀢􀀢􀀢􀀢􀀧􀀢􀀠􀁪􀀻􀁦􀀻􀀢􀀻􀁜􀁾􀁬􀁬􀁩􀀻􀀻􀀧􀀬􀀠<> Laboratory Maximum Thrget Cleanup Sample Sample Method Concentration Goal<ir Date ID De!fction Limit (Illj(/l)
B=ne Toluene i Total MTBE TPl1 Other t Rerer to \\bt:ksheet 11.1-3 and the Risk-Based Correction Adion for Leaking Storage Tank Sites, RG-36, Table AI. NAPL Present? 0 yes 0 00 i On-Site
Thickness (ft.) • B!M>nd Pmperty Thickness (ft.) (provide Boundary well 10) (provide walllD) Current maximum NAPL thickness (ft.): I, NAPL recovery method: 0 hand bail 0 passive skimmer
0 sorbent socks 0 automated system 0 none Volume recovered to date (gals.): ____ "'Aerial extent ofNAPL plume: (ft") 0 beyond property boundary J *Dismnce fiornedjJe ofNAPLplwne to property
boundary ifon-site: 0 < 10 It. 0 10-50 It. 050-100 ft. 0 l00-3OOft. 0 >300 ft. *Dismnce fiorn edjJeofNAPL plume from property boundary ifoff-<lite: 0 < 10 It. 0 10-50 It. 0 50-75 ft.
0 75-100 It. 0 > 100 ft. P=nl spatial distribution of dissolved Oxygen, dissolved CO" dissolved CH., Fe" SO., or other alternate electron acceptors on isoconcentration map. (Attachment
9) , TNRCC-<l562 (11-<l1-95l 14 
SITE ASSESSMENT PST 10: 91471 Known vapor impacl: 0 yes • no Location: o ambient air o utilities o residences o other:_______o hospital o school/day care o commercial buildings Lower
Explosiye Limit (LEL) concentrations: 0 nol measured • measured o calculated' NAPL present or soil concentration near saturation (for calculating soil vapor concentrations. refer to
Risk·Based Correction Actionfor Leaking Storage Tank Sites. RG-36): 0 yes • no Depth (ft. BGS):____ i Total Organic Benzene Sample No. Location Depth % LEL Vapors (ppmv) Other (ppmv)
1 B·1 3.5 -5.0' 8 2 B-2 4.0·5.5' 5 3 B-3 1.0 -3.0' 2 4 B-3 5.0·6.5' 2 5 B·4 3.0 -4.0' 0 6 B-5 2.0 -3.0' 0 7 B-7 3.0 -4.0 1 B B·B 2.5·3.5' 1 9 B·9 2.5 -3.5' 0 Ifvapor concentrations erceed
25% ojthe LEL or other potential jor erplosive vapor erist in sUrface or subsurface structure, describe affected area, methods ofdetermination, and any abatement measure. Identify and
discuss any occupatiolUll or indoor air erposures to released contamilUlnts. Provide all calculations for the determilUllion oj the target concentrations: N/A I. iLEL%should reIIect
whole mixture evaluation. Ifmore than one compound is present, actual measurement ofvapors will typically be . w.manted. TNRCC-OS62 (11-01-95) 1S 
SITE ASSESSMENT _PST 10: 91471 WATER ASSESSMENT Surface water(s) affected: 0 yes • no Name:______ Type:______ Name:______ Type:______NAPL present on surface water or run off: 0 yes 0 no NAPL recovery method: 0 passive skimmer 0 sorbent socks 0 automated system 0 booms 0 other none Volumes recovered to date (gals.):
___ Aerial extent of NAPL plume (1\.2): ___ Uses of affected surface water: 0 drinking water 0 contact recreation 0 habitat for eodangered species 0 agriculture Is a public or domestic
surface water intake impacted? 0 yes 0 no If impacted lake or pond, indicate affected surface area (ft. "): ___ Average depth of surface water (ft.): ___ 􀁍􀁾􀁩􀁩􀁾􀁾􀁭􀀠level of 􀁣􀁯􀁮􀁴􀁡􀁾􀁩􀁮􀁡􀁴
􀁩􀁲􀁩􀁲􀁩􀁜􀁤􀁥􀁴􀁾􀁣􀁩􀁾􀁤􀁩􀁮􀂷􀁳􀁵􀁲􀁦􀁾􀁨􀁾􀀧􀂷􀁾􀁡􀁴􀁩􀁵􀀨􀁭􀁧􀁬􀁾􀀩􀀺􀀠..••.•..... 􀀻􀀡􀁾􀀻􀀻􀀻􀀻􀀮􀀻.... ...•.... ' •. g; .• I Sample Sample Laboratory Maximum Target Location
Method Concentration Cleanup Contaminant Date &ID Detection Limit (mglf) Goalst Benzene Toluene Ethylbenzene Total Xylenes MTBE TPH Naphthalene Other Other t Refer to 30 TAC, Chapter
307, the MCL or the Risk-Based CorreaionAaion!or Leaking Storage Tank Sites, RG36. Describe affected area, methods ofdetermination and any abatement measures. Discuss the migration pathway
between the source ofcontamination and the sUrface water body. 􀁾􀀠TNRCC·0562 (1 H i 0 
LPSTID: 91471 PLAN A EVALUATION 􀁉􀁃􀁁􀁬􀀻􀁅􀁇􀁑􀁒􀁙􀀧􀁉􀀺􀀮􀀻􀀺􀁲􀁓􀀶􀁩􀁛􀀱􀁩􀁒􀀨􀁢􀁇􀁩􀀸􀁵􀁮􀁣􀁦􀁾􀁛􀁦􀁥􀀧􀁦􀀻􀀻􀁴􀀻􀁾􀀧􀁲􀁧􀁥􀁴􀂷􀁣􀁬􀁾􀁾􀁲􀁩􀁡􀁰􀀺􀁴􀁾􀁶􀀮􀁾􀁉􀀻􀁄􀁾􀁩􀁅􀁩􀁴􀁲􀁩􀁈􀁨􀁡􀁈􀁢􀁮􀀠.·.·;
;1 .􀁩􀀧􀀺􀁾􀀻􀁩􀀧􀀮􀁾􀀧􀂷􀂷􀀧􀂷􀂷􀂷􀂷􀂷􀀠········,·(V i· '.;i' ii;:7:'>J;:",Ui, 􀀢􀁵􀁩􀀧􀁜􀁾􀁫􀁬􀀠• Complete this wolbheet for Category I sites. Indicate the maximum detected concentration
for the chemicals of concem. .. If groundwater is > 15 feet BGS, calculate groundwater protective son concentrations using the equilibrium partition equation on......brkeheet 11.5 (when
site specific geotechnical parameters have been analyzed). • Check the box for each compound that exceeds the larget concentrations. If any boxes are checked. further conective action
(i.e.. monitoring. Plan B. CAP) will be required. -II uun::n \Alt.'lIllIl\,oQIOlI UI 􀀢􀀧􀁶􀁴􀁬􀁾􀀱􀁊􀀱􀀠QIO In;:)gll\ U\.J\ 􀁴􀁬􀁕􀁾􀀠1I000U::;:U 􀁉􀁾􀁉􀁏􀁉􀀠\V 􀀱􀀱􀀱􀀻􀁒􀁜􀀬􀀭􀁾􀁏􀁊􀁦􀀺􀁬􀁩􀁗􀀠vVl
I'toVtrVI;; 􀀢􀀢􀀬􀀢􀀺􀀡􀁾􀀧􀁾􀁉􀁾􀁾􀀠IVI L.CQruflU, oJ{Vlgjit: 10111\ 􀀮􀀮􀀻􀁴􀁦􀁵􀀺􀁾􀀧􀀮􀀬􀀠1/1U*v;Ul Chemical of Concern GROUNDWATER (mg/e) SOIL (mg/kg) Depth to Affected Soil s
15 ft. Depth to Affected Soil > 15ft. TARGET CONC. MAX. LAB. ANALYZED CONC. TARGET CONC. MAX, LAB. ANALYZED CONC. TARGET CONC. MAX, LAB. ANALYZED CONC. GW>15ft, CALC SOIL CONC. Cr BENZENE
0 0,005 0 0.13 0 0.13 ETHYLBENZENE 0 0.7 0 160 0 160 TOLUENE 0 1 0 69 0 69 XYLE!NE 0 10 0 568 0 568 ACENAPHTHENE 0 2.19 0 314 0 314 ANTHRACENE 0 11 0 13 0 13 BENZOIAIANTHRACENE o 0.000117
o 0.877" 0 3.2 BENZO(mFUJORANTHENE o 0,000117 o 0,877" 0 13 BENZO(KIFlUORANTHENE 0 0.00117 0 8.77" 0 47 BENZO(A}PVRENE 0 0.0002 00.0877" 0 220 CHRYSENE 0 0.0117 0 7.2 0 7.2 DIBENZO(A.HIANTHRACENE
00,0000117 00.0877" 0 7.7 FLUORANTHENE 0 1.46 0 156 0 156 FLUORENE 0 1.46 0 247 0 247 INDENO(l 2 3-CDIPVRENE 00.000117 o 0.877" 0 17 NAPHTHALENE 0 1.46 0 389 0 389 PYRENE 0 1.1 0 99
0 99 OTHER 0 0 0 OTHER 0 0 0 H -Value represenls bealth-based concen!mtion TNRCC.(lS62 (11.(l1·951 17 
-----SITE ASSESSMENT • heet 11.2 ul LPST 10: 91471 PLAN A EVALUATION riC·AtEGORY, II:: 􀁓􀁏􀁩􀀢􀁡􀁮􀁤􀀮􀁇􀁲􀁯􀁴􀁩􀁲􀁩􀁤􀁷􀁡􀁴􀁴􀁩􀁲􀀻􀀻􀁔􀁡􀁲􀁩􀁾􀁴􀀠􀁣􀁾􀁰􀁌􀁥􀁶􀁍􀁢􀁥􀁩􀁥􀁲􀁭􀁩􀁮􀁡􀁴􀁩􀁏􀁲􀁬􀂷􀂷􀀧􀀩
􀀻􀀼􀀠 .'\;;. ··';;ii/.... • Complete this worksheet for Catellory " sites. Indicate the maximum detected concentration for the chemicals of concern. • If groundwater is >15 feet BGS,
calculate groundwater protective soii concentrations using the equilibrium partition equation on Worksheet 11.5 {when site specific geotechnical parameters have been analyzedl. • Check
the box for each compound that exceeds the target concentrations. If any boxes are checked, further corrective action (i.e., monitoring, Plan e, CAPI will be required. -H U U 111:1'1
'"'II I 111'-'01 I 1'-''"'1 It DIG 􀁉􀁾􀁾􀀢􀀠V... IV\' II';) vl,l • 􀁉􀁾􀁉􀀠LV I 􀁕􀀼􀀮􀁊􀀢􀀧􀀭􀁌􀀾􀁧􀀮􀀺􀀾􀁾􀂷􀁜􀀮􀀱􀀠􀁾􀁾􀁦􀁉􀁟􀀢􀀢􀀧􀁖􀀢􀁶􀂷􀀠,."..UUIl JUI I...COO"'HH glll/OyV' 1q",..
Ullst.? 􀁦􀁉􀀱􀁕􀀭􀁾􀁹􀀨• GROUNDWATER SOIL (mg/Q) (mQ/kQ) Depth to Affected Soil 􀁾􀀠15 ft. Depth to Affected Soil > 15 ft. MAX. LAB. TARGET MAX. LAB.TARGET TARGET MAX. LAB. GW>15ft.
CONC. ANALYZED CONC. ANALYZED ANALYZEDCONC. CALC. SOIL CONC. e,.CONC. CONC.Chemical of Concem CONC. 0 o.O;1!l4 0 0.74BENZENE 0 0.74 0 3.65 0 835 ETHYLBENZENE 0 835 0 7.3 0 503 TOLUENE
0 503 0 968 XYLENE 0 73 0 968 0 314 0 2.19 0 314 ACENAPHTHENE 0 11 0 13 0 13 ANTHRACENE o 0.00117 o 0.877HBENZO(AlANTHRACENE 0 32 o 0.877HBENZO(BlFLUORANTHENE o 0.00117 0 129 BENZO(K)FLUORANTHENE
0 0.0117 0 8.77" 0 47 BENZO(A)PYRENE 00.000117 OO.0877H 0 220 0 7.2 0 7.2CHAYSENE 0 0.117 00.000117DIBENZO(A,H)ANTHRACENE OO.0877H 0 33 0 1.46 0 156 0 156 FLUORANTHENE 0 1.46 0 247 0
247 FLUORENE o O.877H 0 17 INDENO( l,2,3-CD)PYRENE o 0.00117 0 1.46 0 389 NAPHTHALENE 0 389 0 1.1 0 99 0 99 PYRENE 00OTHER 0 0OTHER 0 0 H -'klue represents health-based concentrnlion
TNACC·0562 (1 1-()1·951 18 i 
11.3 LPSTID: 91471 this worksheet for Category III sites. Indicate the maximum detected concentration for the chemicals of concern. • If groundwater is >15 feet BGS. calculate groundwater
protective soa concentrations using the equilibrium partition equation on IMlrksheet 11.5 (when site specific geoteChnical parameters have been analyzed). • Check the box for each compound
that m«:eeds the target concentrations. If any boxes are checked. further corrective action (i.e., monitoring. Plan B. CAP) WIll be required. .. It Uti 11:71 􀀢􀀱􀀱􀀰􀀱􀀱􀀱􀁮􀀢􀀬􀁑􀀧􀁾􀀠VI
,",VIIVVI" un;, ''IiO;;;rgUIi. .....""' .. lfl.ll. 1I;.;t'O:;;"". ''\;i,'''' l ..... 􀁾􀀠u .... 􀂷􀁜􀀭􀁾􀁾􀁾􀁾􀀠........."w...u,,·"'· ,............. u IVI .......vtVIIJt ..... n.nuu;v
IgI In ....,,,..... If IV.....U' GROUNDWATER SOIL (mglO (mglkg) Depth to Affected Soil,; 15 ft. Depth to Affected Soil > 15 ft. TARGET MAX. LAB. TARGET MAX, LAB. TARGET MAX. LAB. GW>15ft.
CONC. ANALYZED CONC. ANALVZED CONC. ANALYZED CALC SOIL CONC. c,. Chemical of Concem CONC. CONC. CONC. BENZENE 0 0.14 0 3.5 0 3.5 ETHYLBENZENE 0 5.21 0 1193 o 1193 TOWENE 0 10.4 0 716
0 716 XYLENE 0 104 0 96B 0 96B ACENAPHTHENE 0 3.13 0 314 0 314 ANTHRACENE 0 13 0 13 0 13 BENZO(AIANTHRACENE 0 0.00556 0 0.877" 0 153 BENZO(B)R.UORANTHENE 0 0.00556 0 0.877" 0 154 BENZO(K)R.UORANTHENE
0 0.0556 0 8.77" 0 47 BENZO(AIPVRENE o 0.000556 0 0.0877" 0 330 CHRYSENE 0 0.556 0 7.2 0 7.2 DIBENZO(A,H)ANTHRACENE o 0.000556 0 0.0877" 0 33 FLUORANTHENE 0 2.08 0 156 0 156 FLUORENE
0 2.08 0 247 0 247 INDENOn ,2,3·CD)PYRENE 0 0.00556 0 0.877" 0 17 NAPHTHALENE 0 2.08 0 389 0 389 PYRENE 0 1.56 0 99 0 99 ornER 0 0 0 ornER 0 0 0 -. represents health-based cwo:en1lalioo
TNRCC-0562 11 1-01 ·95) 19 
lPST 10: 91471 PLAN A EVALUATION [CATEGORY IV:irSoilTarget Cleanurdevel Determination,': 􀀭􀀭􀀭􀀭􀀭􀀬􀁾􀀺􀀻􀀭􀀧􀀭􀀭􀀭􀀭􀀭􀀺􀁪􀀬􀀵􀁾􀀭􀀬􀀠I • CompJe1e this worksheet for Category N si1es.
Check the appropriate column indicating the predominant land use and surface cover. • Indicate the maximum detected soil concentration for the chemical of concem in the column checked.
Check the box for each compound that exceeds the target concentration. If any boxes are checked, further corrective action'win be required. • Dermal exposure should be calculated if
depth to groundwater is <15 feet unless documentation can be provided that surface cover will be maintained andlor construction practices will not encroach upon groundwater'. For dermal
exposure calculations refer to Chapter 10 of Dermal Exposure Assessment, Principles and Applications (Interim Report), EPAI60018-911011 B.NTIS PB92205665. Attach and provide all dermal
exposure assessment calculations. Provide tables which include result and maximum detected concentrations. • It omer cnemlcals or concern are r!jse,rlt out not IISteo reTer to fflSl(-I;lBSOO
I..OffecCtve ACltOn Tor Le8/(lno 􀁾􀁲􀁯􀁲􀁩􀁬􀁦􀁅􀁬􀀠Iani( ::JIles ...LHf.i-JIiI. CI RESIDENTIAL CI RESIDENTIAL CI COML.lINDUSTRIAL ----(] SurrAce to 2 Feel CJ 􀀲􀁾􀁉􀁓􀀠Fee! Withuullml'crviout<;
Cover Surface 100 IS feel Witll(IUt Impervious Cover o SUrrner:: to J5 Feel with 􀁉􀁭􀁬􀀩􀁾􀀨􀀧􀁖􀁩􀁯􀁵􀁳􀀠Cover Regardless ofSurrace Cover (S.il m1:ll<g) (Soil mg!kg) 􀀨􀁓􀁯􀁩􀁬􀁭􀁾􀀩􀀠TtIfOal
Concenttetiom BHed Mmrimum lcboflltmy Sell Target Concet'llultloM MaJtimum L.borbtety 􀁁􀁎􀁬􀁖􀁉􀁬􀁾􀁤􀀠T􀁩􀁉􀁉􀁲􀁾􀀠COl"lcC!('ItretrC(\9 Mulm..." L6b«etclV Chemical of Concern on IngMtlon
end Il'lhaI:ntlon AMlyted Concentr.tlcn Bltud em loge.tion Ccncenlntlon 􀁂􀁾􀁯􀁮􀀠Anlll'{ted ConC<!ntration il'lQetlloMrN!allon BENZENE 0 6.3 0 22 0 10 ETHYlBENZENE 0 3357 0 3357' 0
3357 TOLUENE 0 3257 0 3257' 0 3257 XYLENE 0 968 0 968' 0 968 ACENAPHTHENE 0 314 0 314' 0 314 ANTHRACENE 0 13 0 13' 0 13 BENZO!A)ANTHRACENE 0 0,877 0 0.877 0 7.8 BENZO!B)B)FLUORANTHENE
0 0.877 0 0,877 0 7,8 BENZO!K)FLUORANTHENE 0 8.77 0 8.77 0 47 BENZO!A)PYRENE 0 0,0877 0 0,0877 0 0.784 CHRYSENE '0 7.2 0 87,7 0 7,2 OIBENZO!A.H)ANTHRACENE 0 0,0677 0 0.0877 0 0.784 FLUORANTHENE
0 156 0 156' 0 156 FLUORENE 0 247 0 247' 0 247 INOENO!1.2.3-CO)PYRENE 0 0.877 0 0.877 0 7.84 NAPHTHALENE 0 782 0 78210 0 782 PYRENE 0 99 0 99' 0 99 OTHER 0 0 0 OTHER 0 0 0 ------.e.
Written statements, institutional controls mun be provided that impermeable surfacell will be maintained. b Maximum concentration based on pun:: product saturation limits. TNRCC-0562
(11-01-951 20 
Worksf ,t 11.5 LPST 10: " 1471 PLAN A EVALUATION 􀁆􀁳􀁏􀁩􀁌􀁳􀁾􀁁􀁆􀁆􀁅􀁃􀁔􀁅􀁄􀀧􀀡􀁒􀁥􀁧􀁬􀁾􀁾􀁬􀀱􀁦􀁇􀁲􀁯􀁴􀁬􀁨􀁩􀁩􀁗􀁪􀁪􀁴􀁾􀁴􀁅􀀡􀁥􀁮􀁥􀁦􀁩􀁾􀁩􀁡􀁉􀁕􀁳􀁥􀀠CatiNot Be Establishedl,
"> .􀀮􀁾􀁾􀀭􀀬.. -.-.'"'=J .. Complete this worksheet when groundYo1lter beneficial use can not be wablished. Check Ille appropriate land use and indicate Ille maximum detected soil
concentration for Ille ohemicals of concern in the appropriate columns. • For Ill""" ohemical. of concern exoeediog!he default target concenttations. use site specill. parameter.; (if
collected) to calculate target soil concentrations usiog the equilibrium partition equation (on lbe follcmiog page). . ... Check the bolt for each chemical of concern that exceeds the
default target concenttation and the calculated C, value (Target Soil Concentration Protective of Groundwater determined by the equilibrium partition equation). .. If any boltes are
checked. further 􀁾􀁶􀁥",,\ion will be reqUired. .. Ifother. t but not ti"",," ...rer to Risk-Based Com!Ct;Ct;W! Actio" roT LroJ.:'M Stome. Tnnk Sires IRG·36J. SOIL (m(l/kgl Affected
Soil ,; 15 ft. o RESIDENTIAL • COMMERCIAL (INDUSTRIAL Affected Soil >15 ft. .. DEFAULT MAX. LAB. CALC. SOIL DEFAULT MAX. LAB. CALC.SOlL DEFAULT MAX. LAB. CAlc. SOIL TARGET ANALYZED TARGET
TARGET ANALYZED TARGET TARGET ANALYZED TARGE6,Chemical of Concern CONC. CONC. CONC. <;. CONC. CONC. CONC.C, CONC. CONC. CONC. BENZENE Cl 0.13 • 0.13 15.0 3.249 0 0.13 ETHYLBENZENE 0
160 0 160 85.5 36.611.56 Cl 160 TOLUENE 0 69 0 69 1.04 4,746.82 0 69 XYLENE 0 568 0 568 209 32,451.73 0 568 ACENAPHTHENE 0 314 Cl 314 0 314 ANTHRACENE 0 13 0 13 0 13 BENZOIA)ANTHRACENE
0 0.877H 0.877" 0 3.2 0 3.2 BENZO(BIFLUORANTHENE 0 0.877M 0.877H 0.877" 0 7.8M 7.8H 0 13 BENZO!K)FLUORANTHENE 0 8.nM 8.77" 0 47 0 47 BENZO!AIPVRENE o O.OB77H 0.0877H 0 0.784H 0.784"
0 220 CHRYSENE 0 7.2 0 7.2 0 7.2 DIBENZOIA,H)ANTHRACENE o 0.0877H 0.0877" 0 0.784" 0.784H 0 7.7 FLUORANTHENE 0 156 0 156 0 156 FLUORENE 0 247 0 247 0 247 INDENO(1,2,3·CDIPYRENE 0 0.877"
0.877M Cl 7.84" 7.84H 0 0 17 NAPHTHALENE 0 389 0 389 0 389 PYRENE 0 99 0 99 0 99 OTHER 0 0 0 OTHER 0 0 0 .􀀬􀀮􀁾􀀠._. H -\-\llue represents health·based concentration. The equilibrium
partition equation may only be used when af!ilcted soils are >15 reel BGS fur these chemicals of concern. TNRCC·0562 (11-01·95) 21 
SITE ASSESSMENT PST ID: 91471 PLAN A EVALUATION . EQUILIBRIUM 􀁐􀁁􀁒􀁔􀁉􀁔􀁬􀁏􀁎􀁉􀀺􀁢􀀮􀀨􀁪􀁁􀁔􀁪􀀨􀁪􀁴􀀱􀁪􀁭􀀬􀁾􀀮􀀧􀁬􀀺􀀻􀀧􀀮") ';.,:i,i}< • Use this section to determine the target
soU concentrations protective of groundwater ICT). The CT value may be calculated for each chemical of concern under the following conditions: . • the option is provided on the appropriate
column of the site specific category worksheet; • default target concentration was exceeded; • site specific soil parameters have been collected. • Provide all calculations for each
chemical of concern. PARAMETERS REFERENCE V ALVES USED TO CALCULATE DEPAUL T TARGET CONCENTRATION SITE SPECIFIC VALVES i Cw p S Sa f" 􀁋􀁾􀀠= Category I groundwater target concentration
[chemical specific) (mgfQ) = Dry Soil bulk density (g-soil/cm'-soil) = Water content (cm'-H,O/cm'-soil) = Air content (cm3-air/cm3-soill = Faction of organic carbon 􀀨􀁧􀁾􀁃􀁬􀁧􀀭􀁳􀁯􀁩􀁬􀁬􀀠=
Carbon-Water sorption coefficient (chemical specific) (g-H,Olg-soil) Reference worksheet 11. 1 for chemical specific category I target concentration. 1.8 0.1 0.22 0.002 Reference RG·36.
page 55. Teb/a B-1 fOf chemical specific values. . Kd H' C, = = = Soil-Water sorption coefficient =K x f Unitless form of Henry's law constant H x 41.57 (at 25"C) Leachate Concentration
Dilution Factor = 100 ReftY'ence RG-SO pege 65 :::; Oilution Factor x Cw Use this equation to determine the target soil concentration which is protective ofgrounJvmterfor each chemical
ufconcern. Use sitt! specific geotechnical parameters 10 calculale Cr (Use referenced defaull values jor l1Jly parameters nol anaIyV!d.) c,. = Target soil concentration protective( of
groundwater 􀁤􀁥􀁴􀁥􀁲􀁭􀁩􀁮􀁥􀀺􀁾􀁹fe equilibrium partition equation CT = C, X [g.Kd + 9,., + 9 • P. TNRCC-0562 (11-01-951 22 
SITE ASSESSMENT "'STID: 91471 PRIORITY 1 NAPL present? 0 yes 0 no Evaluate all information on site soils, vapors, groundwater, surface water, and other impacts and check all boxes which
match site conditions. The lowest vaiue is the site priority. If priority cannot be determined, the assessment is inadequate. PRIORITY ACTIONS 01.1 Explosive levels, or concentrations
of vapors that could cause acute health effects are present in a residence or other building. (Ensure the local frre authori!;), or State Fire Marshal (5121918-7100) 8I1d the local TNRCC
Region Office have been notified.) Emergency Actions: Notify appropriale authorities, properly mmers, and potentially affected parties. Mitigale vapor impact. Additional Actions: Conduct
receptor survey. Conduct assessment of contam.inant plwnes. Delermine target cleanup levcls. Conduct remediation as necessary. 01.2 An active public water supply well, public waler supply
line, or public surface waler intake is affected or immediately threatened by the release. release. (Ensure the public authority 8I1d the local TNRCC Region Office have been notified.)
Emergency Actions: Notify appropriate authorities, well 􀁵􀁳􀁥􀁲􀁳􀁾􀀠and property owners. Prevent further migration. Mitigale impact. Discontinue use of water supply. Additional Acdons:
Provide alternalive waler source1. Conduct receplor survey. Conduct assessment of contaminant plumes in relation to water supply impact. Detennine target cleanup levels. Conduct remediation
as necessaI'\'. 01.3 A sole-source domestic water supply well or line, or sole-source domestic swface water intake is affected or immediately threatened by the release. (Ensure the well
user or surface water user and the localrnRCC Region Office have been notified.) Emergen<;)' Actions: Notify appropriate authorities, well users, and property owners. Prevent further
migration. Mitigate impact. Discontinue use ofwater supply. Additional Actions: Provide alternative water sourcet. Conduct receptor survey. Conduct assessment of contaminant plumes in
relation 10 water supply impact. Determine largel cleanup levels. Conduct remediation as necess.arl'. o 1.4 Explosive vapors are present in a subsurface utility system, but nO building
or residence is affected. (Ensure the utility authority and the local TNRCC Region Office have been notified.) Emergency Acllons: Notify appropriate authorities, property owners, and
affected parties. Mitigate vapor impact. Additional Actions: Conduct receptor survey. Conduct assessment of contam.inant plwnes. Determine larget cleanup levels. Conduct reroediation
as n Cl1.5 NAPL is present at the ground surface, on surface water bodies, surface water runoff, or in utilities other than water supply lines. (Ensure the utility authority is notified
if utilities are affected. Ensure NAPL is removed as required pursuant to 30 TAC 334.79.) Emergency Actions: Notify appropriate authorities, property owners, 8I1d affected parties. Secure
area. Additional Actions: Conduct NAPL removal activities. Prevent migration of NAPL. Conduct assessment in relation to impec\. Conduct receptor survey. Determine target cleanup levels.
Conduct remedialion as necessary. 0L6 The Edwards aquifer, recharge zone Or transition zone is affected. Emergency Action.s: Recover NAPL if present. Additional Actions: Initiate assessment
activities, Conduct assessment in relation to impact. Conduct receptor survey. Derermine target cleanup levels. Conduct remediation as necessary. If NAPL is present, conduct removal
activities. 01.7 Concentrations of vapors/particulates that could cause acute health affects. or safety concerns are present in outdoor air. Emergency Actions: Notify appropriate authorities,
property 0\Vl\CfS, and affected parties. Mitigate iffimediate impacts. Additional Adlens: Conduct sufficient assessment to determine ""'poSUTe pathways, receptors and their locations,
and target cleanup goals. If NAPL is present, oondud removal activities. t Reimbursement is contingent upon 30 TAC 3l4.308 (eX3). TNRCC-0562 (1I-OI-95l 23 
SITE ASSESSMENT 􀁾􀁓􀁔􀁉􀁄􀀺􀀠91471 PRIORITY ACTIONS 02.1 . Soils or water rontaminated by the release are exposed and WlseCured from public access and d\vcUlngs, playgrounds, parks,
day care centers, schools, or similar use facilities are located within 500 feet of those soils. Remove, cover, or otherwise secure exposed soils or water. Fill open excavations. Conduct
actions necessary to contain contamination or prevent impact or exposure. 02.2 A former vapor impact is associated with this site, or NAPL is present in close proximity to subswface
utilities or other natuml or man-made conduil and there is potential for the accumulation of explosive vapors or vapors that could cause acute effects in a building or other structure.
Remedietelremove 􀁶􀁡􀁰􀁯􀁲􀁳􀁾􀀠NAPL, Of contaminated soils. Determine migration pathways and remove/prevent ntigration pathways. Conduct assessment ofcontaminant plumes in relation
to the potential vapor pathway. Detennine target cleanup levels. Conduct actions necessary to contain contamination or prevent impact or exposure. 02.3 A domestic water supply well Or
line, Or a domestic SUIface water intake is affected or immediately threatened by the release, but the user has access to another public or private water supply. (Ensure the user and
the local TNRCC Region Office have been notified.) Notify proper authorities, users, and property owners. Prevent migration to water intake. Provide alternative water supply ifnecessary.
Conduct assessment to identify contaminant plumes and ex-posure pathways in relation to water intake. Determine appropriate target cleanup goals based on site conditions. Conduct actions
necessary to contain contamination o!'prevent impact or exposure, 02.4 A non-public or non--<iomestic water suppJy well is affected or immediately threatened. (Do nol consider monitor
wells.) (Ensure the user and the local TNRCC Region Office have been notified.) Notify proper authorities, well users, and property owners. Prevent ntigration to water well. Provide
alternalive water supply ifnecessary. Plug water well if necessary. Conduct assessmenl to identify contaminant plumes and exposure pathways in relation to water well. Detertnine appropriate
target cleanup goals based on site ronditions. Conduct actions necessary to contain contamination or prevent impact or exposure. 02.5' Groundwater is affected and a public or domestic
waler supply well is located within 0.25 ntiles of the USTIAST system or source area. (Check ifa well is presenl, but the well use is unknown). (See footnote 1 before r..pondlng.) Delermine
completion data and usage of well(s) if not already known. Conduct receptor survey to locate additional wells and other potential receptors (if not already done). Evaluate well impact
potential. Delertnine appropriate cleanup goals based on site conditions. Conduct actions necessary 10 rontain eontantin.ation or prevent impact or IJ 2.6 Groundwater or storm water
runoff is affected and discharges within 500 feet of the known ex:tent of contamination to a sunace water body used for human drinking water, contact recreation, habital to a protected
or listed endangered piant and animal species. Conduct assessment which addresses the eontaminant plumes in relation to the swface \Wter. Detertnine target cleanup levels. Conduct actions
necessary to rontain contamination or prevent impact or exposure. NotiJY owners ifimpact is documented. 02.7 A public or domestic water supply well that produces from • groundwater zone
which is not affected or threatened is \ocated within the known extent of rontantination. (Check ira well is present, but the well use is unknown.) NotifY well users and property owner>.
Detertnine complelion data and usage of water wel\(s) . Conduct receptor survey to locate additional set1Sitive receptors. Investigate well impact or cros!KOfltantin.ation potential.
Plug ""n(s) if necessary. Detertnine target cleanup levels. Conduct actions necessary to contain contamination or prevent impact or ex-posure. Morutor water well for J!foundwater quality.

SITE ASSESSMENT • "STID: 91471 PRIORITY ACTIONS 03.1' Groundwater is affected and a public or domestic waler JJeImnine <nnpIeticn data 8Ild usage of wel!(s) if not already supply well
is located be!:IM:en 0.25 and 0.5 miles from the known. Coulu<t 􀁾survey 10 locate additional weIIs and USTIAST system or source area. (Check if a well is O!her potential 􀁾(if not already
􀁤􀁣􀁉􀁬􀀼􀀺􀁾􀀠Ewlua!e v.e!I presenl in this interval, but the well use is unknown.) imjxo:lpotonIiaI. Ewlua!e need tl:rremediaticn. (See footnote 1 before reopondine.) 032 Canduet
assessment which evaluates potential ta impact may discharge between 500 feet and 0.25 miles of the Groundwater is affected and the aJfeoted groundwaler zone the surface water. Evaluate
need for remediation. USTIAST or source area ta a surface water body used for human drinking water, contact 􀁲􀁥􀁣􀁲􀁥􀁡􀁴􀁩􀁯􀁮􀁾􀀠or habitat to a pratected or listed endangered plant
and animal SPecies. Detennine completion data and usage of well(s) if not water supply well is located within 025 miles of the 03.3' Groundwater is affected and a non·public or nan-<lamestic
already known. Canduct receptor survey to locate USTIAST system ar source area. (See footnote 1 before additional wells and other potential receptors (if nOI responding.) already dane).
Manitor water well for groundwater quality. Evaluate need for remediation. 03.4 A non-<:<>mmunity or non-<lornestic waler supply well that NallIY well users and property owners. Determine
produces from a groundwater zone which is nol affected ar eomplation data and usage afwell(s) ifnalalready known. threatened is located within the known extent of Conduet receptor survey
ta locate additional wells and Cl.1!ltaminatialL (Ifa well is present, but the use ofthe well o!herpotential receptors (if not already done). Investigate is unknown, check 2.7 instead.)
well impact or crass-<:Ontamination potential. Monitor water well for groundwater quality. Evaluate need for remediation. A designated major or minor groundwater aquifer is Conduct assessment
of sail and groundwater contaminant affected or immediately threatened. (See footnote 2 ! plumes in relation to major or minor aquifer. Conduct before responding.) I receptor survey
and water well inventory. Evaluate need for remediation. 03.5' PRIORITY ACTIONS 04.1 Groundwater is affected. Condoct assessment of soil and groundwater contam.inant plumes. Conduct
receptor survey and water well inventory. Evaluate site conditions to determine need for additional corrective actions. .4.2 The vertioal extent of contamination has been defmed and
the assessment results document that groundwater is nat affected. Conduct assessment of soil contaminant plume. Conduct receptor survey and water well inventory. Evaluate site conditions
to determine need for additional corrective actions. I. eon.ider only wells producing !10m !he...,. interval ..!he aJfeaed groundW1lkr zone at the release site, "",lis which may provide
a ...... contamination pathwaY. or wells wbcrc annpldion details arc unknown. 2. _I<> Majorand Minor A.juifeB.fT""", 􀁍􀁡􀁰􀁳􀁾􀁢􀁹􀁔􀁥􀁘􀁁􀁓Water Development Board, September 1990.
Donol""";der!helow pc:rtIlCOl>ility Beaumont clays of!he Beaumont Fonnation for the Gulf Ccast aquilQ>. Do not consider a perehed groundW1lkrzone overlaying the prin<ipal producing pa<U0I1
ofthe aquifer unI"" the two .... hydtologi",(1y 􀁾􀀠i TNRCC'()S62 (1 Hll·951 25 
Abbreviations Definition % .••.•••..••..•.....• AST .................. . AV •••••.•.•.•••••••••• BGS ••••••.•.•.•••••••. C ................... .. CAP CAT. CH. em ••....•••.....•.....
cm2/cm? •.......... , ... . CO, .................. . coml. cone. 􀁣􀁯􀁮􀁴􀁾􀀠EPA .•..•....••........ Fe ................... . ft.................... . ft.' .....•.............. gal.
.................. . gig ................... . glm' ••............•.... gpd ................. .. 10 .................. .. in.•..•....•.••........ lab. ................. .. lPST .................
. lSA ................... . Max................. .. MCL •..........••••.... mglkg ....•.......•...•. mgll •......•........... NAPl ................. . No. .................. .. O. ••.................
. ppm .................. . PST ................. .. RP ................... . RPR TAC TEX TNRCC • • • • . . . . . . . . . • • • • TPH UST percent Aboveground Storage Tank aviation below
ground surface celius corrective action plan category methane cubic centimeter centimeter square centimeter per square centimeter carbon dioxide commercial concentration continue Environmental
Protection Agency iron feet square feet gallons gram per gram gram per cubic metar gallons per day identification inches laboratory leaking Petroleum Storage Tank Limited Site Assessment
maximum maximum contaminant level milligram per kilogram milligram per liter non·aqueous phase liquids number oxygen parts per million Petroleum Storage Tank Responsible Party Responsible
Party Remediation Texas Administrative Code toluene, ethylbenzene. and total xylenes Texas Natural Resource Conservation Commission total petroleum hydrocarbons Underground Storage Tank

ATTACHMENT 1 Site plan illustrating location of entire former/current UST/AST system(s) subsurface utilities, limits of excavation, system removal or repair, sampling points, and surface
cover 
• • • • Legend B4I• BorlnglocaUon Tank Farm • B·13•􀁾􀀴􀀱􀁾B·22 􀁾• N• •􀁂􀁾􀀵􀀠E 􀁾1---I B-7 B·l1 6-10r -----'11---... ,-------It' -----, 􀁾􀀠I I I 8-26 1. Ie .1 , • I I B.8 8,;5• 't
II ,I \,Cherryt : Texas Pro II Stem 'I Mission I' Addilet B·9 8􀁲􀀭􀁾􀀭􀀭􀀭􀀭􀀭􀀭B-2t Air t IAir(vaca:nt)tIAirJel', Aire,' , • I • 8·12 , ------II___ .1'._______II,______ _, : LPST SITE
:. •􀁾􀀠i -------"',----------'I B·27 8.4 ,-------, B·l1 " I I Stem Air :: Million Air • B·3 ,--------􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁾􀀭􀀭• Addison Road Note: VVater. Stormwater, and Sanitary Sewer
tines run 8-28B·29 paraUel to Addison Road • • +z ., Prepared for: Prepared by: FIGURE i-A (Not to Scale) Addison Airport Fuel Farm ADDISON AIRPORT Test Bor;ngs, LPST No. 91471 4505
Claire ChennaultTRIAD Oat.: May 28, 1997 TPN: 42078.AOIAddison, Texas • 
'SPHALT lOT -.-------,1 &'II'I.!J.INC I I I I I i ! 􀁡􀁕􀁩􀁵􀀺􀁮􀁾􀁣􀀠AIRPORT H).NCERS I __􀀭􀁾􀀠/fUWR£ J DISF[NS£R I,l./.IID I .. ""'--􀁓􀁁􀁃􀁋􀁇􀁉􀁴􀁃􀁪􀁬􀁬􀁾􀁩􀀧􀁃􀀠--,-SA'olPl£ D.RT
ANf· 􀁩􀀻􀁾􀁁􀀧􀁴􀀧􀁲􀁌􀀠LOT I, I I I, I !---FlJl UN[ . 􀁐􀁒􀁏􀁾􀁕􀁃􀁔􀀠: UNE t N GRASS SITE AND SOil LOCATION MAP ADDISON A'RPORT ROSCOE TURNER ROAD ADDISON. IE XAS 􀁾􀀠DATC: JAN 1992
r-ROJECT NO_ 32-917(11 seAL£: NTS f,GURE 1'0. 1-B 􀁾􀀠􀁾􀀢􀀭􀁾􀀭
·-.. -----..􀀫􀀭􀁾􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀮􀀮􀀬􀁬..􀁾􀀭􀀭􀀭􀀭I I I i FND ! lion Well Location k Reference E!evalion at 100.00' L.z ,.. G 8-111 I I I I􀁾􀀽􀀭􀀽􀀭􀁬􀀭􀀭􀁾􀀭􀁦􀁾􀀠I I (3) Jet A
12,000 I I. I Gailc;') Tanks I &8-8: I1...-.-___---""-___-...;..., __..J ________._. _____....__.________ . __i------------------. I I ---,---.--.---------------t 1 \ 'd-'1 8, Figure
1-C Test Boring and Observation Well Location Plan Aviall CorporationPHASE I HYDROGEOLOGIC INVESTIGATION Aviall Addison Jetport Fuel Farm Addison, Texas 􀁴􀀺􀁁􀀮􀀺􀀮􀁔􀀺􀀮􀀮􀀺􀁅􀀺􀀮􀀺􀁣􀀺􀀮􀂷􀀺􀀮􀀻􀁒􀀮􀀺􀀮􀁥􀁰􀁾􀁯􀀺􀀮􀁲􀁴􀀮􀀺􀀮􀀮􀀺􀀮􀀺􀁎􀀮􀀺􀀮􀁏􀀮􀀺􀀮􀀮􀀺􀀲􀀺􀀮􀀺􀀵􀀽�
�􀀭􀁟􀀽􀀰􀀺􀀮􀀮􀀺􀀰􀀺􀀮􀀮􀀺􀀴􀀮􀀺􀀺􀀸􀀮􀀺􀀺􀀳______.. ATEC Associates, Inc. ! 􀁾􀀠oIlno. I"VA JH310Newl<>"< I OrollOs. lO:tOl 75219􀁾􀀠
·1 ATTACHMENT 2 Vicinity map or aerial photograph illustrating surrounding land use and receptors identified within a 500-foot radius 
Legend (]) Sanitary Sewer Inlet ® \M!ter Meter -Storm Sewer Inlet ,---, Tank Farm'"' -_ .... Plane Parking Concrete/AsphaH \I Chevron Office II \I l\ \I II \I \I II \\ 1\ 1\ II II II
II II II 1\ II II \I II II II o r-;• , '-,r" , ' , , '-' , I , I 􀁾􀀮􀀠1--I I--_.... \I 1\ II \I .m. \I:!II c::::J Storm Sewer Vault =Storm Sewer Vault N Prepared for: FIGURE 2 (Not
to Scale) Site Vicinity MapADDISON AIRPORT + Addison Airport Fuel Farm 4505 Claire Chennault Addison, Texas Oate: May 28, 1997 lPN: 4207B.A01TRIAD 
6 TRIAD SITE AERIAL PHOTOGRAPH Addison Airport Fuel Farm Photo Date: 3/31196 
SITE ASSESSMENT __ _ .·5T 10,,-:__...9CJ.1"'4.!...7.!...1____________________________ Continuation of Worksheet 2.0 from Page 5 List all facilities (not limited to PST regulated I within
500 feet of the site that could be a source of contaminants: , , Other Comments:. ' facility Name & Ixpe:Stern Air Fuel Farm Address:Addison Rd. Appro, 150' soutb of site Facility NQ
;Unreuistere4 LPST ID No. NIA Owner/Operator: R Stern Facili!y Name & Type: Addiiet (Addison AjlJl0rtl Address: 15409 Addison RQad Facility No: 63865 LPST ID No, N/A OwoerfOperatQ[;
Addison Ai[pOrtlMercury Air Facility Name & Type:Stern Air Jet Fuel Farm Address:Addison Road Appro! 350' south of site Facility No.; Unreeistered LPST ID No. NfA QwnerfQperator; R.
Stern Facility Name & Iype;Addison Aviation Address: Addsj9n RQad AnptQX $OO'south of site Facility No,: Unregistered WI ID No. NIA OwnerlQperatQr: Addison A vjatioD (Formerly Cherry
Air) 
ATTACHMENT 3 USGS topographic map with plotted water well locations 
" Y' .f· 􀀾􀁾􀁾􀁾􀀠,, /e) , LEGEND .• WE'lllOCATlON* S:lE lOCATIONi 􀁁􀁾􀁐􀁒􀁏􀁘􀁊􀁾􀀮􀁁􀁔􀁅􀀠lOCATIONS ONL'Y \\'ATER WELL LOCA TION MAP WELLS WITHIN A 112 MILE RADIDS NWC ADDISON RD
& ROSCOE TURNER RD DALLAS, TEXAS DALLAS COUNTY USGS 7.5 MINUTE QUADRANGLE ADDISON (PR 1981) <§>G e 0 sou r c 􀁥􀁾􀀠Inc, ENVIRONMENTAL DATA and RESEARCH l()OO WEST AVE.• SUITE A AUSTIN.
TEXAS 78701 512·474-6721 fAX: 512·474-5428 
ATTACHMENT 4 Copies of completion details and water well drillers reports for located wells (0.5 mile radius) 
1 GEOSOURCEINCORPORATED ENVIRONMENTAL DATA, RESEARCH & MAPPING SERVICES < WATER WELL REVIEW SITE: NWC ADDISON RD & ROSCOE TURNER RD DALLAS, TEXAS PROJECT# 42078.AOI CLIENT: TRIAD ONSITE
SYSTEMS Geosource illCorporated' 1000 West Ave., Suite A • Austin, Texas 78701 • ph (512)474·6721 fax (512)474-5428 
Geosource Incorporated September 26, 1996 Project# 42078.AOl Risa Basso Triad Onsite Systems 641 5 Cedar Springs Dallas, TX 75235 In reo Water well search for a site in Dallas County:
NWC Addison Rd & Roscoe Turner Rd, Dallas, Texas. Dear Ms. Basso, Geosource Incorporated (Gf) has performed a water well search for a site in Dallas County. GI utilized the following
steps for this project: 1. Locate all located and plotted water wells on TWDB (Texas Water Development Boardl County highway maps onto a map provided by GI within the area of review
(AOR). locate all located water wells on TWOB USGS (United States Geological Survey) 7.5 minute tapa maps onto the map provided by GI. 2. Research well schedules within the unnumbered
county water well files. 3. Research well schedules of located and plotted wells found on the TWDB water well maps at the TNRCC (Texas Natural Resources Conservation Commission) central
records. 4. Research well schedules of partially numbered water wells within the plotted water well fifes at the TNRCC central records within the AOR. Note: A set of fifes named "unplotted
wells" exist for every county. Within these files are well logs which have no location information. The TWDB does not assign a state id. no. to these wells considering that location
information is not available. These files date back to 1966. GI did not search through these files due to the fact that many of the logs have little or no location information. if you
feel that these files should be examined, GI will search the files per your request. GI has encfosed the map and well records for your review. The following is a brief explanation of
terms: Plotted water wells -wells whose location has been taken from water well drillers logs. Since June of 1986 the TWDB has stopped locating these wells on their county highway maps.
The accuracy of the location for these wells was dependent on the driller. Drillers logs that are currently being procl;lssed are given a partial well number where by the well is identified
within a 2.5 2.5 minute quadrangle {within a 7.5 minute topol. There are also wells which have duplicate well numbers. These wells are supposedly in or around the original well location.
(Examples; of a plotted well number is 1 0-1 0-5A, of a partial well number 10-10-41 1000 WEST AVENUE SUITE A AUSTIN. TEXAS 78701·2019 􀁓􀁊􀀲􀀧􀀴􀀱􀀴􀁾􀀶􀀷􀀲􀁴􀀠. FAX; 􀁓􀁉􀀲􀀧􀀴􀀷􀀴􀁾􀀵􀀴􀀲􀀸􀀠
Located water wells -wells whose location has been verified on site by a TWDS or USGS staff member. Often times when a well is located on the ground it ends up being a planed well. In
such cases the plotted water well becomes located well. (Example of a located well number is 12-34-6541 GI identified one located well within a 1/2 mile radius of the site. Following
is a listing of the well: STATE ID NO. 33-02·201 Note: The location map will have one well location. GI's research of water wells within the AOR was a search of the maps at the TWDS
and the records within the TNRCC central records files at the time of the search. GI may not be able to account for logs not within the files of the TNRCC central records files. Also,
due to the fact that some water well logs are not submitted by drillers and the unaccountability of privately drilled water wells, GI is unable to provide 100% of the data in the AOR.
If you have any questions concerning this project or need additional information, please call me at 512 474 6721. Sincerely, David Stegmann Enclosures 
WELL RECORDS NWC ADDISON RD & ROSCOE TURNER RD DALLAS, TEXAS 
I ," '" , ( FOl'm GW_l TE,xAS BOARD or WATER ENGINEERS GROUND-WATER DIVISION WELL SCHEDULE "D'''__􀀭􀁙􀀯􀀭􀁾􀀠g RC1;O rd by___ 􀁴􀀬􀀮􀀮􀁾􀀺􀀵􀀮􀀠Source: of data_ /!_L //􀁾􀂷􀂷􀁲􀁶􀀺􀁺􀀮􀀲􀀮􀀠
------! I ; t t f ." ,i 􀁾. • f I 1􀁬􀁾􀀠 Topoguphy: iI __......l___ I 4. 􀁅􀁬􀁾􀁖􀁡􀁴􀁩􀁏􀁮􀀧􀁬􀁾_ it, 􀁾􀁭􀀮􀀮􀀻􀀵􀁌􀀮􀀠r---""t-,5. 􀁔􀁹􀁰􀁾􀀺􀀠Dug. 􀁾􀁬􀀺􀀿􀀿driven. bored. jetted
􀀱􀀹􀁾􀀡􀀡􀀱"71 I--'----'"" -" 6. Depth: R.e:pt. 􀁾􀁟􀀷􀁾􀀸􀀠n. Mus. ft. I I,I _--i.___ 􀁾􀀵􀁩􀁮􀁧􀀺􀀠Diam. ___in•• to ___ilL. Typc__ 􀁾􀀭􀁪􀀭􀀭􀀭I IDepth__􀁾____ft.• Finill-l___ I ,
8. Chid 􀁁􀁱􀁵􀁩􀀡􀁥􀁲􀀺􀀭􀀫􀀭􀁾􀀠From ____ft. to_"___{t. i Other. /I ,t -----, 9. Water levl':l: ft. npC, 19 above . 􀁾􀀭􀀭􀀭􀀭mea.;-----------below ----l"which iI 't. ..hovt!; .urface
f ---------------------: -----Mlow 􀁾􀀧􀀠10. Pump: Type__L ______ Capac:ity_____Um______ jPower: Kind 􀁟􀁾______􀀿􀁬􀀭􀀭􀀭􀁈􀁯􀁲􀀮􀁥􀁰􀁯􀁷􀁥􀁲􀀭􀁾__-\ !1. 􀁾Flow_______8pm. Pump CO 􀁬􀁰􀁭􀁾􀀠Mcu.8E.t
. 􀀱􀀹􀁾􀀠,'" t Drawdown______It, after ____hou,n pumping ________ gpm r ll• .!!!!.:. Dom.• 􀁓􀁛􀁏􀁃􀁫􀁾RR •• Ind.• Ob., In. ___________ r Adequacy. permanence __ f13. QuAlity: ____
, f I i ! 
... -('" y;; A i I 0-1009 , , /CJt;ft'1-N/,:) I (J10 -26/</26>/'1 -2 {" IS 2ICr-s--2768 􀀲􀀮􀀷􀁾􀀸􀀧􀀠-Z77g> ., .,.. . ','" '". . ". l . " ,.. . 􀁾􀀠--'. 33 -02-2.0 I ), · i• 􀁾.. 12-'I
0 D ,. ! g'f>/p'Of) · • 8s-f;" Of) t roo 􀁾􀁲􀀧Mfr£-L I -7" c:?j) • 7'i/o .{ 􀀧􀁾􀀢􀀠() D 􀁾􀀧􀁲􀀠􀀯􀀿􀀧􀁵􀀮􀁾􀀠6-Y',?" 􀁏􀁏􀁾􀁉􀀡􀀭􀁾rfe b SIt''' 0 () 􀁾7'􀁾hi 􀁾􀀭􀀻􀁺􀀺􀀬􀀬􀀬􀀬
---------------------------------------------------------------------------r \ TEXAS \lAT£a D£V£LOFK£NT SOAP.D Field No._______________ _ O'WneT1l! Well No. ___________ _ T. I If--+-+I
I I I !-!--+-I I , , 􀁃􀀮􀁾􀁾􀀦􀀠RUe" PIF£ Celllent.ed Fro= e1 rt. t.o ';';p I. ') r:.. i::Iialll. ,,., 􀁾􀁔􀀮􀁴􀀮􀀻􀀮􀁴􀀺􀀢􀀬􀀠r;.. (in. ) ... ron: " I I':L 􀁳􀀭􀀬􀁦􀁾􀁬􀁟􀀠_Q_/S"---------Xix
//C> 􀁾􀁣􀁦􀀮􀀮􀁃􀀺􀀧􀁬􀁟---------,-----7 _S"&.f?:L_ 1r}?1 :2&1S"-------,-! t,7f ,/?b/S"􀀺􀀱􀀿􀀿􀁾􀀠1. Location;____l/L.____1/4 􀁓􀁾􀁣􀀮_____• Block________ Survtr7_________________________
. '9. 􀁾􀀺􀀠Flow_____gpa:, ?u:l!?______&pili, !-leas" Rept.. f Est,_____________ _ 10. Perfc::"'I:".ance !'est; !)ate________Leng"'.J:; af Test_____ Hade ay __________ _ St.atic Level____!'t.
􀁾􀀱􀁲􀀮􀁧􀀠:'e\Oel____ft. 􀁄􀁲􀁡􀁶􀁤􀁾􀀠____ft. 'Froduction gp= Speci!'ic C.})felty gr::lIV'n. 11....tEtt" Level: 􀁾􀁾􀁶􀀺􀁾􀀮􀁾___ ____􀀱􀀹􀁻􀀡􀁾􀁾􀁤__ :... __________________ which
_____b tt. above l'lur!ace. bela!.;I ____ UR?:tJ:t. ::;..J6_-:/o;;.. 􀁟􀀱􀀹􀀷􀁾􀁾􀁤􀁹􀀧􀁾_..$J!:?9.."::__ __________ "';'h U_____ ft. 􀀺􀀡􀁾􀀺􀀠surface, . • beloy ft. rept. 19 ..bove
which i.e tt. .hoye 􀁳􀁵􀀭􀁾􀁡􀁣􀀻􀁥􀀠_ .... ---------meas.----------below---------... ----_ ... --... -------------• bel",... ... . ___________!'t. x-ept. 19 above which .1= ft. above
5ur(ec:e. 􀁟􀁾􀀬􀀮􀀢􀀮􀀢􀀬􀀮􀀮􀀮􀀬􀀧􀁾􀀧􀁣􀂷􀀭-.... -------beloy--------------------------------be11»1 12. tl .. \)': 􀁄􀁾􀁭􀀬􀀮􀀠SrOCk(tubh.c Supol.}:; Ind., Irr., Waterflooding, 􀁏􀁢􀁳􀁥􀁲􀁶􀁡􀁴􀀺�
�􀁯􀁦􀁬􀀮􀁾􀁟􀀺􀀢􀀮􀀢􀀺􀀧􀀠_____ ':"_:.. __________.______ _ 1). 􀀧􀀺􀀺􀀺􀁵􀁡􀁈􀁾􀁬􀀧􀀠(Remarks 1m tolste, odor, color, ete.) TeM?,___ "F, Date s8!'O,)1ed for 􀁡􀁮􀁡􀀱􀁙􀁤􀀡􀁬􀁟􀀯􀁤􀀭􀀢􀀺􀀮􀁉􀀮􀀮􀀭􀀻
􀀷􀁌􀀭􀁟􀁾􀀮􀀺􀁯􀁾􀁡􀁾􀀺􀀺􀀧􀀺􀀧􀀽􀀠2?Jf􀁾􀁾􀀭-----------------------------',..:.l.!., o· ,J : Sc:-ee:t Oper.!!::gs 􀁾􀀠-l)1aa:. 7:.-pe 􀁥􀁴􀁾􀁩􀀺􀀢. .!'t.•• -' in.) [,"" ,. 􀀬􀀮􀁾􀀠􀁾􀁦􀀡􀁲􀁾􀁾􀁬􀀠;
:2d./.:;-1 -7c:1 §:------r---" ---------------------_____ J_____ @------------􀁾􀀡􀀠, 􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭�
�􀀭􀀭􀀭􀁾􀀭􀀭􀀭􀀭􀀮􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭
I 􀁾􀀠! 􀁾􀀠􀁾􀀠'"'t I 􀁾􀀠I\;-}􀁉􀁾􀀠I 􀁾􀀠􀁾i 􀁾􀀠􀁾􀀼􀁉􀁾􀀠' 􀁩􀁾(),3C 􀁾􀁾􀀮􀀠􀀮􀁾􀀠􀁾􀀬􀀠~~ '. 􀁾􀀠/,.5--:;, •\ " -􀀡􀀮􀀴􀁾􀀠,-, 􀁾􀀠deJft..iA/./2 (d. 11e/lfp/e ,.(J FI. ,(iT B
, 33 -02--20 I 
______ __ ; TVpewrit'E! (Black ribbon) or Print Plainly isoff 􀁰􀁾􀁮􀁣􀁩􀁬􀀠or black ink' Do nOt use ball point pen ') State Department of Health Laboratories .J West 49th Street Austin.
Texas 78756 CHEMICAL WATER ANALYSIS REPORT Send report to: Ground Water Data and Protection Division \ Texas Water Development Board P.O. Box 13067 Austin. Texa. 78711 TWDBE-GW ONLY
Program No. ___________ 􀁐􀁾􀁪􀀮􀁎􀁯􀀮􀀠_____________________ o ... County 􀁛􀁦􀁦􀁬􀁾􀁦􀁲􀁬􀁴􀀴􀀵􀀠State Well No. 􀀭􀀶􀁉􀀲􀁬􀀭􀁾􀀠-_______-;::::::; Well No =:-==c-Date Collected 􀁭􀀭􀁾􀀭􀁛􀀱􀁪􀁝􀀠Bv
edt Location 􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀽􀀽􀁾􀁾􀁾􀁾􀀭􀀭􀁟􀀺􀁾􀁃􀁟􀀭􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀽􀁟􀁾􀁲􀁟􀀭􀁟􀁣􀀾􀁲􀀭􀀽􀁟􀀻􀁲􀀭􀀮􀀭􀀭􀀭􀀭􀀽􀁟􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭iSou.ce
Itype of wellitiit ''I()() -PI./? Own., 􀀮􀁣􀀮􀀮􀀻􀂣􀀡􀁾􀁃􀁊􀁾􀁣􀀮􀀮􀁾􀁾􀁾􀀲􀀮􀀮􀀡􀀺􀁾􀁾____􀁾􀀮_____________ • Da<e Dnlled 1f57DePth ;l'77 r ft. 􀁗􀁂􀁆􀁩􀀧􀁾􀁾􀀧􀀺􀀮􀁯􀀼􀀮􀀮􀁌􀀺􀀽􀀽􀀼􀁣􀀺􀀧􀀧􀀧􀀧􀀧�
�, 􀁰􀁲􀁯􀁤􀁕􀁾􀁭􀁧􀀠􀁩􀁮􀁴􀁥􀁲􀁶􀁡􀁬􀁾􀀯􀁓􀀺􀀢􀀧􀀻􀁬􀀮􀀷􀁡􀁲􀁬􀀧􀀠Water leve' __.:2"""C)"",O=,O,,-__ : Sampled after pumping ____-...".-_-_______ hrs. Yield"---GPM 􀁾􀀠 , POint of colleCtion
􀁟􀀭􀀴􀀼􀁷􀀮􀀢􀀢􀀭􀀧􀁾􀀢􀀢􀀭􀀮􀁌􀀯􀀮􀁊􀀯􀀧􀁟_____________________________ 􀁁􀁐􀁰􀁥􀀺􀁲􀀺􀁾􀁣􀁥􀀠0 deal'" 0 turbid 0 cc.lored 0 other " Use JI--5" ___ Remarks _________________________________________
__________________ .......;.'IFOA LABORATORY USE ONLY) CHEMICAL ANALYSIS 􀁾􀁹􀀠PUNCHED oratory No. ________ Date Received _______ Date Reported MG/L MEiL ,Silica ,Calcium· I-HHHHH O
SodIum • . '6 􀁾􀀠3􀁾􀀮􀁾􀀠􀁾􀁈􀀮􀀠70 TOlal , r--r-1r-r-,.....,--,I....J.!..L.:...J 0 , 0 Potassium • o Manganese hHH!-I-1IH%Na ------_ o Boron 􀁈􀀭􀁦􀀭􀁦􀀭􀁦􀁾􀁾􀁓􀁁􀁁________ 10 Total
Iron 􀁉􀀮􀀮􀀮􀀮􀀮􀀮􀁊􀀧􀀭􀀭􀁉􀀮􀁾􀀭􀀡􀀮􀀮􀀮􀀺􀀡􀀡􀁊􀀮􀀮􀀮􀀮􀁊􀁒􀁓􀁃􀀠________ o (other) __________ MG/L : Specific Conductance (micromhosfcm31 ·1/11 II .•Hed Conductance (micromhos/cm3)
X 􀀭􀀭􀁾􀀢􀀭􀀭􀀭􀀭􀀭. D" Irems wilt be analYled if cheCked. Jt The bic.arbonaie t'Eported in this analysis is convened bV computation ,(multipIVlng bV OA917l to an equival(!:nt afr'l;:lun't
of earbonate. and the 'e.rbonate figure is used in the compuuuiQn of this sum. 3J Nitrogen c.ycle require$ separate sample. 3, ... 􀁾􀀮􀁟􀀬􀀠1. __ ' ...._' ••r ..􀁾􀀠."...... n.t", t
... """....I.. MG/L MEiL Carbonate· Bicarbonate ...,5 3 Sulfate • I rlS Chloride ()J 1: Fluoride • l3l!l Nitrate •q.1(. TOfapH • 􀀭􀁪􀀮􀁾􀀠j; Dissolved Solids 􀁾􀁳􀁶􀁭􀀠in MG/L) • Phenolphthalein
Alkalinity as C aCO) Total Alkalinity as C aC03 Total Hardness as C aC03 y Nitrogen Cycle Ammonia -N . Nitrite-N . Nitrate -N OrganIc Nitrogen-r-• --f-o-f-􀀡􀁾􀀠􀀮􀁾􀀠I 􀁾􀀮􀀠􀁾􀀠ott<:::::
of-.-f--, I. I -, 􀁾􀀠(;,... li-B􀁾􀀠!/, 0 r-f-0 -f-0 -􀁾􀀠I • --'--
ATTACHMENT 5 Site plan(s) illustrating former/current UST/AST system(s) and all (i.e., soil, groundwater, vapor, surface water) sampling points 
1---, , I I I,Cherry, Air I 8·22• r ----... ".--"'\0 ,------.r -----, I 8..26., I, " \ • 11 I, t' \ : Texas Pro II Stem " MissIon .' Addljel \ i Air {Vacant}IIAir Jet t I Aire ,I I II
II " \ ...... _------"'-------._-----B·27• Note: waler, Siormwater, and Sanltllry Sewer lines run parallel to Addison Road 8-9• 􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁾􀁴􀀭􀀭􀀭􀀭􀀭􀁰􀀭􀀭􀀭􀀭􀀬􀀠I 't I : __􀁳􀁾􀁥􀀺􀀮􀁮􀁟􀁁
􀁾􀀠__ :: _ _ 􀁽􀁾􀀡􀁉􀀡􀁾􀀬􀀡􀁾􀁩􀁲􀁟􀀠... _1 Addison Road 8·29• Legend 8-11 Boring location• B·7• •B·14•B·6 B.15• 80SB·8 • 􀁾􀀡______ 8-2 , I • : LPST SITE :. 8.4 , -------, B·l• B·3•
Tank Farm .... OJ E 8·13• I-:J IB.ll• OJ 8 8·12& • 8·28• B·l0• +z Prepared by: 6 TRIAD Prepared for: ADDISON AIRPORT 4505 Claire Chennault Addison, Texas FIGURE 5-A (Not to Scate) Addison
Airport Fuel Farm Test Borings, LPST No. 91471 Date: May 28, 1997 TPN: 42078.AOI 
i____...-________.___...__.__ ____,,_._.___ ....._ ___.____ .. \ Molle w. I l" __ .. --.. _. 􀁟􀁾__ J I ! t N ASf'HAI..T LOT f t.:fi..'fH l>:·>r·n.. 􀁾􀁩􀀮􀁒! i 1//􀀱􀁾􀁬􀀮􀀮􀁁􀁴􀁩􀁬􀀺􀀠I
•. -j i!AC··.(,?;·:·l·".;C, ..._---'] : __ 􀂷􀁉􀁾􀂷􀁟􀁊􀀠􀀵􀁾..:Flt i ! I 􀁾􀀮􀀠 fL!l'.;Fi F􀀬􀁾􀁜􀀩􀀡􀀺􀀧􀀺􀀺􀀱􀀺􀀠I Lan:. I I % " § 5 '" n,Rl At:r, GRJ.,"'£L LOT I .... --_..... I
SITE AND SOil LOCATION MAP 􀀢􀁾􀀠
----------I · j , j .1 1 ! · ,I .J I,J. 1 · .! J. IIII......􀁾..........--"------------------------------.!. 􀁾􀀠8-12 􀁾􀀠8-9 -I:!. 8-31 OW"'3 􀁾􀀠8-11 ;􀁉􀀭􀀭􀀭􀀭􀁾􀀭􀁾􀁹􀂷􀂷􀀭􀀭􀂷􀀭􀀭􀁾􀀭􀂷􀀭􀀭􀀭􀀧
􀀭􀀭􀀽􀁉􀀽􀀭􀀺􀀺􀀩􀀱􀀰􀁑􀁾􀁾􀀠􀀱􀀲􀀬􀁾􀁾􀀠􀁇􀁾􀁉􀁾􀁏􀁮􀀠􀁾􀁾􀁮􀁫􀁓􀀺􀀠r . 1 1 1-$-8-2/0W-21 (3) Jet A 12,000 I 1 I Gallon Tanks 1 I I I frS:'5fOW-5 I : I 1 [! (1) Jet A. 17,000 Ganon
T::lnY; 1'---______1 􀁦􀁓􀀭􀀴􀀯􀀰􀁗􀀭􀁾􀀠__,___J I 􀁾􀀭􀀭􀀭􀁾􀀠-----\' 􀁾􀀧􀁂􀀭􀀷􀀠ChaiT) Link Fence &S-8 \ 􀀢􀀧􀀭􀀭􀁾􀀭􀀭􀁾􀀭􀀭􀀭􀀭􀀧􀀭􀁾􀀮􀀢􀀭􀀭􀀭􀀭􀀭􀁟􀁩􀀨􀁾􀁟􀁾_________'_")< '"
---1i Motor Fuel I 2,000 Galon Tank 11 􀁾􀀸􀀭􀀱􀀯􀀰􀁗􀀭􀀱􀀠I Pump Area I iI I 􀁬􀁾􀀠8 '10 II "0 1 r.l 0 0: I 􀁾􀀠CJ 5 "􀁾􀁂􀀭􀀧􀀠c i I I, I J1 i 􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁾􀀮􀀭􀀭􀀭􀀽􀀭􀀧:='􀀧􀀺�
�􀂷􀀢􀂷􀁾􀀬􀀻􀀬􀀻􀀽􀀽􀀽􀀽􀀱􀁾-􀁾􀁅􀁇􀁅􀁎􀁄􀀠􀁾􀀠Boring localion -$-Ob$ervajion Wei! location (" (8M)-Benchmark 􀁒􀁥􀁲􀁥􀁲􀁾􀁮􀁣􀁥􀀠Ele"atior, at 100.00' Scale l' 20.0' (8M)•Top of Fir,;
Hydrant l_ 􀀭􀁾􀀭􀀭􀀭􀀭􀁾􀀮􀀭􀀮􀀠------' Addison Road t-------.---,-------_._-------'---. Figure 5-C Test BOring I and Observation Well Locati0n Plan 􀁟􀁾􀀠IAviall Corpora lion IPHASE
I HYDflOGEOlOGIC INVESTIGATION ..,..,JAviall Addison Jetport Fue! Farm -,Addison, Texas ATEC Report No, 25-00483 ATEC Associates, Inc.W 􀁾􀁾􀁾􀁯􀀧􀁬􀀡􀀭􀀼􀀾􀀺I 00'10<. la,,,, 75m -_._--------􀀭􀀭􀀭􀀭
􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀮􀁾􀀭􀀭􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭
ATTACHMENT 6 Soil contaminant concentration maps " 
• • Oeplh Benzene TPH 8·1 3,5 -5.0 15.00 11,566 8·2 4.0-4.5 8.05 3,160 B·3 5.0-6.5 1.07 32,900 B-4 3.0 -4.0 NO 3,640 6-5 2.0·3.0 NO 1,000 6-6 3.5 -5.0 NO 1,300 B·7 3.0 ·4.0 NO 2,700
8-8 2,5 ·3.5 0.083 3,360 B-9 2,5·3,5 NO 5,000 B·l0 2.0·5.5 NO NO UnUs: Depth = feet Benzene =mgIKg TPH= ppm NO • Not Detected ANALmCAl RESULTS FOR EACH BORING lOCATION I ---,I I I :CherryI
r Air I 6-22• r ----... ,,---􀁾􀀠1-.... -----, r -----, I 􀁂􀁾􀀲􀀶􀀱􀀱􀀠I, " 1 • It I, " 1: 􀁾􀁥􀁸􀁡􀁳􀀠Pro II Stem II Misslon ,'Addljet lAir (Vacant), ,Air Jet., Alre ,I ------___ J
_______ ' ______ _I 'I', " B·27• 􀁲􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁾􀁉􀀭􀀭􀀭􀂷􀀭􀀭􀀭􀀭􀀭􀀭􀀬I I, , I Stern Air :: Milllf.,m Air ,---------------TPH NO NO 419 NO NO 149 20 NO B-7• B-4 • Legend B-#• Boring
locaUon Tank Farm • 􀁂􀀭􀀱􀀴􀀱􀁾􀀠N •• 􀁾􀀱􀀵􀀠B-5B-8. • _ B-2r------t • : LPST SITE :. t _______ , 8·1 B-3• 􀁾E 􀁾􀀠􀁾􀀠0 <.> fi.(I') B-13• B·ll B-l0 B-12• B-11 B-12 B·13 6·14 6·15
6·16 B-17 B·18 B·19 8·20 Depth 3.5·4.0 5.0-6.0 3.0-5,0 4.0-6.0 6.0 ·6.75 1.0 • 1.5 1.0 2,25 1.0·3,5 3,5 1.0 -3.0 4.0 -4.75 Benzene NO NO NO NO 0.36 0.13 NO NO NO NO TPH NO NO NO 477
819 1,279 32 NO NO NO B·21 B·22 B·23 8-24 6-25 6·26 B-27 6-26 8·29 Depth 1,0·2.5 1.0 -2,0 1.0 -3,0 1.0 -2.25 1.0-3.5 2.0·4.0 1.0 -3.0 2.0 -4,5 2.0 -3,5 6-9• Benzene NO NO NO NO NO NO
NO NO NO Addison Road Nolo: Water, Stormwater, and Sanllary Sewer Une. run B-29 8-28 parallel to Addison Road • • +z 6 Prepared far:Prepared by: FIGURE G·A (NattaScale) Addison Airport
Fuel FarmADDISON AIRPORT Analytical Results, LPST No, 91471 4505 Claire Chennault TRIAD Date: May 28,1997 TPN: 42078.AOlAddison, Texas 
I :....___.-___________...._.o-______􀀮􀁾..... -••---.,--...-..􀁾􀀭􀀭􀀮􀀬􀀮􀀡􀀭􀀧􀀭􀀭􀀭􀀮--I I I L 􀁡􀁜􀀮􀀺􀀮􀁦􀀻􀀮􀀺􀀧􀁾􀀮􀀮􀀠...._._....J I t N i5PHAI..T Lor I ..-... (lIH;r( H:,)OVt;f
liNt 
------------------------------------, --I 􀀭􀀭􀀭􀀭􀂷􀀭􀀭􀀭􀀭􀀭􀁾􀀭􀁬􀀠\ 1, LEGEND I ,,,, . . 􀀧􀀮􀁾􀀠1'PI-I-\,ctDD -$-B-3fOW-3& "-11 Tf'rI-1.120 . 1 1----------. Addison Road ---------,.--------_.-.
------------._\1 , J lSi BerinG L.ocalion -Q-ObservaH0n Well 􀁌􀀨􀀩􀀧􀁾􀁡􀁬􀁩􀁯􀁮􀀠I; CBM)-􀁂􀀭􀁾􀁾􀁣􀁨􀁭􀁡􀁲􀁫􀀠Reference Elevation al 100,00' ii Scale l' 20.0' II iI ,I Ii I I ! (8rvl)
10 Top 0J Fire Hydr allt I L -------_..----".. __._--.--..COf)c..erV\"Yo.t\OA':;' I'" 􀁾􀁤􀀠,,, /""\5 I􀁾.' ,. . Sal""\plC':; Of)c.I'I"Z.ed fer TPH Of) l'f .$<:1,''''1'' 'e.. dep-t'hc.
wert:.. VIc-\-, ava, table. .__._-_._---'---􀀭􀀭􀀭􀀭􀁾..--Figure 6-C Test Boring and Observalion Well Location P;211 Aviall Corporation PHASE I HYDROGEOLOGiC INVESTIGATiON Aviall Addison
Jetport Fuel Farm Addison, Te;tae ATEG Report No_ 25-00483 ---_._-1 
ATTACHMENT 7 Gro\lndwater gradient map N/A 
ATTACHMENT 8 Groundwater contaminant concentration maps N/A 
ATTACHMENT 9 Biodegradation Indicator Distribution Map N/A 
ATTACHMENT 10 Soil Gas Survey Maps N/A I I , 
ATTACHMENT 11 Vapor Contaminant Concentration Map 
VAPOR CONTAMINANT LIMITS LEL =Lower Explo';ve limit Legend 􀁏􀁥􀁰􀁬􀁾􀀠(nJ LEL B-1 3.5 -5.0 8% B-2 4.0 -5.5 5% 6-3 1.0 -3.0 2% 6·3 5.0 -6.5 2% B-4 3.0 -4.0 0% B-5 2.0 -3.0 0% B-7 3.0
-4.0 1% B-B 2.5·3.5 1% B-9 2.5 -3.5 0% B-II Boling Locallon • Tank Farm ... Q) E ,---, r -----,,---"10.-------It -----, B·7 􀁾􀀠, , •, II It,' , B·5 Q), , t'. I 1 B-B. 0rCherry, , Texas
Pro I: Stem t I Mission :. Addijet , a·9 • B·2 t>.-----"'-, • tilt Air f : Air (Vacant}I I Alt Jet t I Aire ,I • ., '. " : LPST SITE :. &--------_ ...... _-----"------r-------"Iot----------,
B.4 ' -------B·lJI " I , Stern Air :: Million Air • B·3 ,------------------• Addison Road Note: Water, Stormwater. and Sanitary Sewer Lines run I···parallel to Addison Road +z 6 Prepared
for: Prepared by: FIGURE 11 (Not to Scale) Addison Airport Fuel FarmADDISON AIRPORT Vapor Contaminant Concentration Map4505 Claire Chennault TR.IAD Date: May 28. 1997 TPN: 42078.AOIAddison,
Texas 
ATTACHMENT 12 Surface Water Contaminant Concentration Map N/A 
ATTACHMENT 13 Surface Water Flow Map 
ATTACHMENT 14 Soil boring logs to include: lithology, field screening, sample locations, well completion details, TNRCC Form 0019 
Page' of' Log of Boring Number B-1 Location See Figure Orolect Addison Airport Fuel Farm, Addison, Texas 􀁬􀁾􀁧􀂷􀁲􀁔􀁹􀁰􀁥􀀠le.slng i ,Geoprobe c jDriUed by I " !11 !Logged By 􀁾􀀠..
c ITEG IR. Basso 'in .. 1:]u.. !!!.5 i :8 IS i 􀀮􀀮􀂧􀁾􀀠" " " .... 􀁾􀀠􀁾􀁾􀀠􀁾􀀺􀁧􀀠􀁾􀁥􀀠􀁣􀁾􀀠"'i!!'E 􀀢􀀧􀁾􀀠:l:e's 􀁾􀀠STRATUM DESCRIPTION .ll!l. 􀁅􀁾􀀠􀁾􀀡.!l !aJ 􀁾􀁾􀀠.eo> .,"-til:
a..1l:a..c:: me 􀁾􀁥􀀠ws 􀁸􀁾􀀠.... 􀁾􀀠-! I Fill Dirt and Gravel i--'-Black Clay -calcareous nodules -85-j ! -Dark Brown Clay -calcareous nodules 3 -115--, i -I 309.5 1 11.5664 -􀁉􀁾􀀠475
15 ND 85.5 209-! I -Gray Clay . -!-with beige mottles -310, 14.7 ND-42.7 50.5 _107_9! 6,640 6 -t:r Limestone i ! ! -i I -! i7 --End of Boring -. I ! i -! i !a -"-I i ! I -! i !9 -,-I
I I ! ,--! !10 •"I i · . -!11 • -· . -1 12-= · -13 •"I I ,;ompletion Depth Dale Water ObservationS None6.5 feet Triad Onsite SysIem$. Inc. TPN: 42078.AOl 
Page I of \ Log of Boring INumber B-2 l.J>:aUon See Figure Proiect Addison Airport Fuel Farm, Addison, Texas '"'Il''' I ype e.sing 1 i I :..... ! c'v...... I logged By II is 1 ! OriUed
by " ITEG '!l ii R. Basso ; 􀁾􀀠lli 􀁾􀀠>< i c w S I 0 Qg> " " ....:8 c .. 􀁾􀀠􀁵􀁾􀀻􀀠6􀁾􀀧􀁅􀀠􀀬􀀬􀁾􀀠"'.. 􀁾􀀠􀀢􀀧􀁾E 􀁾􀀠STRATUM DESCRIPTION :;.m! -si 􀁾􀁾􀀠􀁾􀁾􀀠g[ -E "'E" /Jl
"a. 􀁾􀁥􀀠􀁾􀁡􀀮􀀠""8:0 3:0 1 fa:: me " a. -a. .... ,90.... w_ .... -Fill Dirt and Gravel i ! --i I'-Black Clay ) 2""':: i calcareous nodules 40 ! -Dark Brown Clay i i calcareous nodules
I 1QO ! !"!-\4 -, I ! I'I !-Gray Clay -I 8.05 1 35.2 11.2 54.45 3,1601I with beige mottles 190 ND 5 -I I--, 1 . . 6 -X ,cu Limestone 210 0.024 NO 0.084 0.044 154 3.990i--i-I 7_ End of
BOring !-a -'I 1 . -9 -'-10 --I I . -11 •'i .--! 12 -'! 1 --13 --, r Completion Depth 6.75 fee! Date Water ObseMllions None Triad 0nsiIe systems. Inc. TPN: 42076.AOI 
Pagel of 1 Number' ' locationLog of Boring B-3 See Figure "reject Addison Airport Fuel Farm, Addison, Texas iAugerType ICasing iGeoprobe ! c !0 g,Drilled by ILogged By l'ii 􀁾􀀠11 􀀮􀁾􀀠'"
c :TEG 􀁾􀀠.. 􀁾􀀠"I 8 U) !:! ! !.5 .. R. Basso i ,,0> .. ..j/:8 , 􀁾􀀮􀀮􀁅􀀠c .. "'!e 􀀢􀀧􀁾'" ".. 􀁾􀀠􀁾􀀢􀂧􀀢C. E [ ! STRATUM DESCRIPTION !='iil 15g !:! E :H. 16 E "'"§" 􀁾􀀠􀁾􀀠􀁾􀀲􀁬􀀠fl.
,,0. 150. .!!"158: D..o. "' en ",s. I-s. -Co 􀁾􀁡􀀠I-s.w_ i--Fill.Dirt and Gravel i I-I -I i -1\ Black Clay ! I 360 0.63 11 0.52 3.85 6.04 16,960-2 -calcareous nodules ! ! 'r !-1/Dark
Brown Clay-! 3 -calcareous nodules ! i --i 4 -I j I , -\ Ught Gray Clay ! 490 ND ND! ND 5.09 5.09 24300-5 -friable with beige mottles ,'-J-I 6 -I , 'vO<U Limestone 01U! , )< I 1.UI U.//;I
Nl) 1.ZI ".lZ I , -7 -End of Boring i i-I I--i I8 -!'j i--i i i I 9 -', i i i I-i i ! I-10 -i i I'i i ! I -11 -'!--12 -'I ,-, -13 -I-I i r ';ompletion Oepth 6.5 feet Dale Water Oboervations
None Triad Onsite Systems, Inc, TPN: 42076.AOI 
Page I of 1 Log of Boring B-4 Ilocation See Figure Project Addison Airport Fuel Farm, Addison, Texas 􀁩􀁾􀁧􀁥􀁲􀁔􀁹􀁰􀁥􀀠Casing EJevation , . , ! 6I UUC; !!Drilled by llogged By 􀁾􀀠c
1 .2 " "TEG R. Basso ''''; 􀁾􀀠I x.. c " i UJ .5 1!1 :8 c C 0> II! C) I CD ... .c c. 􀁾􀁩􀀠"6£ " -Iii 􀁾􀁩􀀠l'!'E Ill_ x-C. E 􀁾􀀠STRATUM DESCRIPTION 􀁾􀁾􀀠oll 􀁾􀀠E Ii 􀁾􀁣􀀮􀀠{j8<1.8"
m .cOl " c.Cl III 11.0: ala xa ... a ... a 0 ,Fill Dirt and Gravel , I i -1 0 I'0 Black Clay 90 i-2 •"calcareous nodules 0 ! -3 . ' t;rown Clay -'"'' "u '"u '"u 􀁯􀀮􀁾􀁾􀀠􀀢􀀧􀁾􀁾􀁉􀀠􀁾􀀬􀀢􀀢􀁕􀀠-I
, 4 • Umestone I I, I-.:::::¢r::: oX U NU NU NU 1U.1 1U.1 NU 6 0--j -7 -'I • -! , -8 •", ! . ! -9 . , i-i, i -10 •'-i -11 -'-,-12 ----13 --r _pIetIon Depth 5,5 feet Date Water ObseNations
None Triad Onslle Systems, 100. TPN: 42078,AOI 
Pag.l of 1 Log of Boring Number< B-5 Lneatlon See Figure Project Addison Airport Fuel Farm, Addison, Texas 1';:11'" 'ype Casing Elevation ! I'u..,'" 􀁩􀁾􀀠" ! Drilled by logged By 􀁾􀀠,g
!! ! TEG R. Basso 􀁾􀀠, 􀁾􀀠x s fr '" .. UJ B 􀀱􀀸􀁾􀀠£'" .. .. t-a oS " Ol_ 􀁾􀁅􀀠"'􀁾􀀠.. 5ix-E 􀁾􀀠STRATUM DESCRIPTION =11 15'" 􀁾􀀸􀀮􀀠a[ £8. -E 0.[, .. ",II! 􀁾􀁾􀀠􀁾􀀡􀁬􀀺.. <Ii!
IS:O0 U) I 0.0: .. "o "-co. t-a'" t-_w_ ... · ! -Fill ,Dirt and Gravel !· <· Gray Clay-calcareous nodl.des2 . "V NU I'U· "<"0 "<00 v<tO 􀁉􀀮􀁾􀁕􀁕􀀠-3 -Medium Brown Clay I calcareous
nodules-I-i I I ! 'I ! Gray and Beige Clay l:IU ! I --with product '--6 -! ..􀁾􀁾􀀧􀀧􀀧􀁾􀀬􀁾􀀢􀀠limestone -IX 0" NU NU NU V.VI U,UI ,)VV 7 -I -End of Boring -i -i8 •'-i -9 -!'· I -10
-! i'--11 -'i --i ! 12 •-L ! -I 13 •-I I .:ompieiion Depth 6.5 feet D.t. Water ObservaUons None Triad ensn. Systems, Inc, TPN: 4207SAOI 
B-6 See Te""" TEG R.Basso I I 􀀱􀀭􀀭􀁉􀀭􀀭􀀫􀀭􀀭􀀭􀀭􀀬􀀭􀁾􀀭􀀭􀀭􀀬􀀭􀀭􀀭􀀭􀀮􀀭􀀭􀀷􀁟􀀭􀀭􀀮􀀭􀀭􀀱I ' , 6 i I 2 3 4 STRATUM DESCRIPTION DARK BROWN CLAY -v,rith calcareous nodules TAN &
BROWN FRIABLE CLAY • witb wea!llered limestone I I ! 1 [ ! ' I .1 l -I 
Page 1 of1 ! locationLog of Boring B-7 See Figure 􀁉􀀭􀀻􀀺􀀻􀀺􀀽􀀺􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀮􀀮􀀮􀀮􀀮􀁌􀀭􀀭􀀭􀀭􀀭􀁾________________i, Project Addison Airport Fuel Farm Addison Texas , , ! "uger
Iype casing I ! : Geoprobe " ! •Drilled by logged By 􀁾􀀠c: i'il .51 " i iii " !" iTEG 􀁾􀀠t.:lu. R. Basso" " " ".5 ... i 􀀸􀁾􀀠o '" " '" ....6£ "co"co5 c. i'e I ai[ "'e. E STRATUM DESCRIPTION
􀀧􀁩􀁪􀁪􀁾􀀠I oil " E :E-E -E 􀁯􀀮􀀮􀁾2 ... 􀁾􀁣􀀮" <ll S:O 􀁾􀀠" cog o c. 􀁕􀁊􀁾􀀠􀁾􀀵0 "-0: .... .... 5 .... 5 Fill Dirt and Gravel -· !'· Brown Clay 50-calcareous nodules !2 • -I
i -Tan and Brown Clay I-friable with limestone fragments · • -IX 􀀱􀁾􀁕􀀠NU NU u.qq 􀁱􀀮􀀢􀀬􀁾􀀠4.t:>b ;!,!UU -,cu Limestone 4 --I , -End of Boring 5 •---6_ : -: J7 ---! -8 • , i---9_
! · -i 10 --I --• 11 ----12 -"--13 •"I ':omplelion Depth 4.0 feet Date Water Ob$eJVations None Triad Onsile Systems, Inc. TPN: 42076.AOI 
Page 1 ofl Log of Boring I Number B-8 locaUon See Figure °roiect Addison Airport Fuel Farm, Addison, Texas 􀁬􀁾􀁧􀂷􀁲􀁔􀁹􀁰􀁥􀀠•Casing EIevaUon ! cI uuc jDnlledby 􀁾􀀠c ... Logged By
2 j ! If. 􀁾􀁔􀁅􀁇􀀠R. Basso ,. 􀁾􀀠􀁾tl c c E J ! 􀁾􀁧􀀠.. .." c .. 􀁾􀀠'is. 􀁾􀁩􀀠􀁾􀀧􀁛􀀠􀁣􀁾􀀠􀀮􀀬􀁾􀀠! .. 􀁾􀀠􀀢􀀧􀁾􀀠,E 􀁾􀀠1 STRATUM DESCRIPTION -1i! !!l E :H. C E ..E 􀀺􀁲􀁾􀀠c3
.. 􀁾􀁾􀀠􀁾􀁩􀀡􀀡􀀠-"-t"-CL 0.& til ",e 􀁾􀁥􀀠-"xe {!.e ... ew_ -Fill Dirt and Gravel i I I ! -1 -I -I-Dark Gray Clay 701--calcareous nodules iI.-Medium Brown Clay I i -200 0.08 1 NO
0.21 2.7' 2.99 3.360 j3 --I , I I -: I 4 -End of Boring---.--6 -"-j -7 -'--8 -i.--i 9_ i ,-i i -10 ----, 11 -'. -i12 • .-I -i !13 --I r .:ompIetion Dep\l1 3.5 feel Date Water Observations
None Triad Onsfte Systems. Inc. TPN: 42078.A01 
Page f of1 Log of Boring Number B-9 Location See Figure Project Addison Airport Fuel Farm, Addison, Texas IAugerType Casing Elevation i c I I I,.... 'uu'" OriUed by Logged By II e !11
􀁾􀀠.. e .... TEG R. Basso 􀁾􀀠l'Ii.s; '" . :s e .. ii.!! J 0 .. " '" .... '" <>U.!Il '6..5 􀁾􀁩􀀠"_ <Xl"'"'x-C. E STRATUM DESCRIPTION ="iii 􀁾􀁩􀀠.. E >.E " E ;; E c.§.l5 " Hl .2<>:5"􀁾􀀡􀀠-<>,'"
a.'" 􀁾􀁳􀀮􀀠{E,e ws. o ".... s..... --iFill Dirt and Gravel : -1_ i -Clay 70 calcareous nodules 2-= i -I 3 • !Dark 􀁂􀁲􀁏􀁗􀁾􀀮􀁃􀁾􀀧􀀺􀀡􀁥􀁡􀁭􀁳􀀠L<lU NU NU U.14 "L.UI :<.L1 t>,UUU
"-..􀁾􀁧􀀮􀀬􀀬􀀢􀀬􀀠c" Limestone 4 --IX '''u NU NU u . .>' ".,.> '>.V" 􀀢􀀬􀁾􀀢􀀢􀀠, 5 -'End of Boring -! -i i6 -'-i , I 7_ , --8 -, "-! -9 -', j ,--! i10 --I-11 -, ---12-= -!-13 -'i
i i I t '::omplelion Depth 4.5 feet Dale Water Observations None Triad 􀁏􀁮􀁳􀁾􀁥Systems, Inc. TPN: 42078.AOl 
I : Log of Boring 􀁾􀀭􀀭􀀭􀀭􀀬􀀠• Pf1ijle'l.':[ I I I ill 􀁾􀀬􀁣􀁯􀀭􀁭􀀢􀀬􀁬􀁐􀁬􀁣􀁾􀀧􀁩􀁌􀀺􀁮􀁾􀁄􀁣􀁾􀁰􀁩􀀭􀁾􀁄􀁮􀀺􀁡􀀢􀀧􀀬􀁥􀀺􀁔􀁜􀁷􀁶􀀺􀀻􀀮􀀬􀁥􀀺􀀺􀁲􀀢􀁯􀀢􀁢􀁳􀁥􀁲􀁶􀁡􀁛􀁪􀁯􀁮􀁳􀀠
-with limestone seams 1----+--+--:-----:---",,-,-:----. See Figure --0-􀀬􀁾.. 􀁾􀀢..--i I, I I, I -,-", ----'-'--II _---..::.:..:....::c:.:_________________••• __.,! 5.5' 3/14197 No
Groolldwater Encountered . .._._.􀁾􀀠 i 
2 4 R.Basso STRATUM DESCRIPTION -WiUl limestone seams I 􀁎􀁾􀀠I Sf)-"4T 􀁅􀁾􀁩􀁈􀁪􀁆􀀠BORlt-;<::;------------i , I II i I , i . I J fCcmplclion Depth Dare 'Vater Obser\'siionsL_ 4.5'
___ 3114197 No Groundwater Encountered--..􀁾􀀭􀀮􀀭􀀭􀀭_._---,--,---
R.lIasso STRATUM DESCRIPTION 1 4 􀁨􀀭􀀢􀀧􀀻􀀭􀀭􀀭􀀫􀀭􀀭􀁉􀀭􀀭􀀴􀀭􀀭􀀱􀀭􀀭􀀭􀀧􀁾􀀭􀀭􀀭􀀭􀀱􀀠, 
I I ,H Number LocatiOn 􀁾􀁯􀁧􀀠of 􀀮􀁾􀁟􀀰􀁟􀁲􀁟􀁩􀁮􀀭􀀭􀀢􀁧􀁾___.J.I__􀁾􀁂􀀺􀀮􀀮􀀭􀀮􀀡􀀮􀀱!:::3--L1__􀀮􀀺􀀻􀁓􀀺􀀻􀁥􀀺􀀮􀀺􀁆􀀺􀀮􀀻􀀡􀁩􀁧􀀢􀀬􀁵􀁲􀁾􀁥.______.[*e, TEG By R.Basso I 􀁩􀁾􀁾􀀠.e..
! c: ;::::. m i-:' STRATUM DESCRIPTION III 􀁩􀁾􀀠􀀭􀀭􀀭􀀭􀀭􀁪􀀺􀀮􀀮􀀮􀀺􀀺􀀺􀀮􀀺􀀺􀀺􀀺􀀺􀀽􀀽􀀫􀀽􀀭􀀫􀀽􀀭􀀫􀁾􀀫􀀭􀀽􀀭􀀭􀀭􀁔􀁟􀀭􀀽􀀺... 􀀭􀀭􀀭􀁾􀀮􀀭􀀭-GRASS & TOPSOIL . 􀁉􀁾􀁾􀁾􀁟􀀮􀁟􀀮􀀭􀀭􀁾􀁎􀁾􀀠ND
NO I ND NO: NO ,0.0 I. I I 􀁾􀁾􀁾__􀁾--L----L__....l----LI_ Completion Depth Date Iwater Observations _________,____􀀭􀀭􀀮􀀺􀀺􀀵􀁾􀀮􀁏􀀺􀀮􀀮􀀮􀀮􀀧___---.:3114197 _.._ . ..__ __--2.:.::..:No
Groundwater Encountered 
I .. ----" Number .Location 􀁬􀁟􀁾􀁯􀁧􀀠of 􀁂􀁯􀁲􀁾􀁮􀀮􀀮􀀮􀀮􀀺􀀺􀁧􀀺􀀢􀀭__...l.I_ B-14 I See Figure ; 􀁐􀁲􀁯􀁪􀁾􀁣􀁴􀀠-r1::.: ':-'= By R.Basso STRATUM DESCRIPTION I 2 CLAY -with calcareous
nodules 3 ; I 􀁩􀀭􀀷􀁲􀀱􀁉􀁾􀀭􀀭􀀱􀀭􀀭􀀭􀁲􀀭􀀭􀀭􀁲􀀭􀀭􀀭􀀭􀀺􀀭􀀭􀀭􀀭----------;r------+----i----I J---1 _ _ L._jIt-. !I . I I I---+---t---t--+---t---􀀮􀀭􀀭􀀭􀀭􀀭􀁾􀀠
1 2 3 4 6 I􀁟􀁾􀁟􀀮􀁟􀀧􀀠I , Texas R.Basso STRATUM DESCRIPTION ! . 􀂷􀀭􀀭􀁾􀀭􀀭􀁴􀀭􀀭􀂷􀀬􀀭􀂷􀀭---,-.--j I I ! I I I I J .. _.. ......___._._-.--l__L__L_._...J-.. --.-' -----I comrlc:tJCn
Depth Dale IWater Observstions 6.8' 31l4i97. Perched Waier at 16" .--,-.. ...􀀭􀁾􀀮􀀮􀀮􀀭􀀭􀀭􀀮􀀭􀀭􀀭􀀮l
WEATHERED LIMESTONE -􀀭􀀲􀁾􀀵􀀭􀁅􀁎􀁴􀀵􀀠OF BOii.iNO---_.-------I ' . I • I I , ___11l_i___,j ___i__ ;.--' 􀀭􀀫􀀬􀁾􀁾􀁾􀀭􀀭􀀭􀀭􀀭􀁾􀁾􀁾􀀭􀀭􀀭􀁾CQ1l1pl<lion o"plh D31clwarcr Obs"rvalions
l ___􀀺􀀲􀀺􀀺􀁾􀁾__._ 􀁟􀁾􀀳􀀱􀀲􀀱􀀴􀀺􀀺􀀱􀀹􀀺􀀺􀁣􀀷􀀺􀀮􀀮􀁊􀀮____________..:.N.o Groundwater Encountered:____ I 
• "b'" • See By R.Basso log of Boring ! TEG Numner STRATUM DESCRIPTION 2 1 I i ,I Ii I􀁾􀀠 !compl-;c7tiOL.-D'C-CV'+-h-----,Da!e=--O=watc:r Obscrvarions'-' ____1-_1_-----'---'----_l_._1-_
􀀭􀀭􀀭􀁾􀀭􀀭􀀭􀁾􀀠 i 2.3' 3114197. No Groundwater Encountered I 
! TEG R.Basso STRATUM DESCRIPTION 1 ,----. -'-----r<umoe-,--Location􀀭􀀮􀀭􀁾􀀮􀀮􀀠[ See Figure 􀁾􀁐􀁾􀁪􀁾􀀺􀀠􀁾􀁌􀁂􀁟􀁯􀁟􀁮􀁮􀀡􀀡􀀮__􀁾􀀮__􀁾􀁟􀀠B·18 􀀳􀀱􀁅􀁛􀁾􀀺􀀺􀀺􀀭􀀺􀀺􀀺􀁾􀁾􀁾-Tn'!ND
􀁏􀁆􀁂􀁏􀁒􀁬􀁎􀁇􀁾􀀠-------.. ---I ! I I I I Ii ! I j 􀁌􀁊􀁌􀁾􀀠;. ___ 􀁾􀁾􀀠􀁾􀀠___.___ 􀁾􀁩__l I ___!___.L_J_L_-____Ii IComp1ction Depth Oat.:: IWater Observations J' i 3.S' 􀁾􀁟•._.
..}114/971... No Groundwater Encountere::.:d=--___ ___ .__ 
I l\umocr l.OCauon rllfC,; 1 UI \ ! 􀁌􀁾􀀼􀀺􀁾􀀠of 􀁂􀁯􀁲􀁩􀁮􀁧􀁾___...tl_ B-19 __.2e.eFlg'!.re. ____.____􀁾___.___..___; . , I 􀁉􀁲􀁴􀁯􀁪􀁾􀁣􀁴b Addison IE F,, • II . I I ; II ,I I
I TEG STRATUM DESCRIPTION -witll calcareous nodules I r00 iND ! I i 0.0 ! i ! I i I ,, i I , I !, • •• , i i ND ND ND ,, !,,, I, --;, I i, ! , I , I I i i ! I ,, I , I I II i , 􀀭􀀭􀀺􀀭􀀭􀀭􀁾􀀠i-_.._
--------; I !I I '_JLI 􀁾Completion DepthI 3.0'"---.-------􀀭􀁾􀀮􀀠j __ __ __ 􀁾􀁌􀁊􀁟􀁟􀁟􀀧􀁟􀁟􀁟􀁟􀁟􀀠......__􀁾􀀠. Dat¢ Water Obstrvalions 3114197 No Groundwater Encoorlfered --...
---.--._I, I I 1, I ,I I , : ! _L-_.. I. 
Aug.cr TEG 􀀭􀀭􀀭􀀭􀀼􀀭􀀭􀀭􀀮􀀭􀀼􀀭􀀮􀀭􀀭􀀮􀀭􀀭􀀮􀀭􀀼􀀭􀀭􀀭􀀭􀀮􀂷􀁬􀀧􀀺􀁵􀁭􀁬􀁾􀂣􀁲􀀭􀂷􀀭􀀭􀀭􀀭􀁾􀁲􀀺􀁯􀁣􀁡􀁲􀀱􀁯􀁮􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁐􀁯􀁬􀁾􀁃􀀠1 ot I I 􀁌􀀺􀁬􀁾􀁯􀀺􀀺􀀼􀁧􀀧􀀺􀁾􀀭􀁁􀁾􀁏􀁤􀀮􀀺�
�􀀺􀀭􀀽􀀺􀀽􀀭􀁯􀁾􀀽􀀭􀁲􀀺􀀮􀀺􀀮􀁩􀁮􀀺􀀮􀀺􀀮􀁧􀀽􀀭􀀭􀀭􀀭􀁊􀀮􀀭􀀼􀀭􀁂􀁾􀀮􀀮􀀺􀀺􀀺􀀭􀀲􀀽􀀭􀁏􀁾􀀭􀀧􀀭􀁉􀀭􀀭􀁾􀁾􀁾􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁁􀀼􀁤􀀭􀁤􀀭􀁩􀁾􀁯􀁮􀀬􀀭􀀭􀀭􀀭􀀭􀀱􀀠 􀁉􀁾R.Basso '"
􀁾􀁾􀁾􀀫􀁟􀀭􀁓􀁔􀁾􀁒􀁲􀁲􀁁􀁷􀁔􀁾􀁕􀁭􀁍􀁾􀁄􀀭􀁅􀀭􀀭􀁓􀀭􀁃􀀭􀁒􀀭􀁉􀁐􀀭􀁔􀀭􀁉􀀭􀁏􀀭􀁎􀀭􀀭􀁾􀁾􀁾􀁾􀁩􀁾􀁾􀁟􀁴􀁾􀁩􀁾􀀽􀀭􀀭􀁲􀁾􀁾􀀺􀀡􀀺􀀭􀀼􀀮􀀼􀁲􀀭􀀭􀀭􀁬􀀠 I 4.7 I I I , . ,-I . I, I No Groundwater
Encountered 􀀭􀀭􀀭􀀭􀁾􀀭􀀭􀀭􀀱􀀠bnplCtiOnDcpthI 4.8' 1 3 4 ---END-OF-jORiNG-
i I 􀁬􀁯􀁾􀁾􀁾􀁦􀀠Boring􀁾􀁲􀁮􀀺􀀩􀁪􀁥􀁲􀁴􀀠,.",u<UC{ ....'.....au\'11 ...L B-21 -'--_--=S.:..:eo-====-______________--I Addll);otl, Texas R.Basso STRATUM DESCRIPTION I : I . , I ___J

I"{umbcr LOCl.UlClllog of Boring B-22 See I . I I I iI i, I, ! , I' 􀁊􀁟􀁾􀀭􀀬􀀭􀀭􀀭􀁟􀀭􀀬􀀭􀀭􀀭􀀬􀀭􀀬􀀭􀀭􀁾􀁟􀀧􀁟􀀭􀀮__-_􀀮􀀻􀀮􀀬􀁟􀀭􀁟􀁾􀀭_j-1•Cml1ple-(icQ Depth 􀁄􀁡􀁲􀁾1􀁗􀁡􀁴􀁾􀁲􀀠􀁏􀁢􀁾􀁲􀁶􀀸􀁴
􀁩􀀮􀁴􀀩􀁮􀁳􀀠. 2.3' _____ 31141971 ______.... _________ ... 􀁟􀁾􀁯􀀠Groundwater Encountered 
"UWl}C1 􀁾􀁪􀀬􀁪􀁖􀁩􀁬􀀠􀁦􀀮􀀮􀀮􀀮􀀬􀁌􀁏􀁾􀁧􀀽􀀭􀀭􀁏􀁦􀁟􀁂􀁟􀁯􀀢􀁲􀁟􀁩n-...:g=___ "____ l__ B-23 I See FIgure Addison Alluison. Texas , R.Basso STRATUM DESCRIPTION 1 , II , 3 􀁦􀀭􀀭􀀭􀀫􀀭􀀭􀀭􀀺􀀭􀀭􀀢
􀀭􀀭􀀭􀁴􀀭􀀭􀀭􀁾􀀭􀀭􀀭-'---I i i , I I I ! I I I 
1 2 Numocr L.Ut:IlUQIl __-,1_ B·24 1 By R.Bassa STRATUM DESCRIPTION S"" Figure 
Number LOCsmm l.:lt;'" , .... , • 􀁾􀀬􀁌􀀽􀁯􀀮􀀬􀀭􀀭􀀺􀁧􀁾􀁟􀁯f_B_o_rj_n.::g B-2JL_______􀁾􀁓􀀮􀀧􀀡􀀺􀀮􀀻􀁥􀁾􀁾􀁟􀁾_____________.....j___ _____._L_ STRATUM DESCRIPTION I 2 3 I--+----/---+---f--·-----
------I .--_._--jI l ___􀀮􀀮􀀮􀀺􀀮􀀺􀀺􀁾􀀮___.__􀀬􀀬􀁾􀁾􀁾􀀮􀁌______________􀁎􀁾􀀭􀁾􀁯􀁾􀁇􀁾􀁲􀁯􀁾􀁵􀁮􀁾􀁾􀁤􀀢􀀢􀀡􀀧􀁡􀁾􀀨􀁥􀁾􀁲􀁾􀁅􀁾􀁾􀁮􀁾􀁣􀁾􀁯􀁵􀁾􀁮􀁴􀁾􀁣􀁾􀁲􀁣􀁤􀁾______.____ "
..___i 
.--L-_. __ "--_ L ; Log of Boring J...".... B-26 􀁾􀀠􀀭􀀭􀁾􀀭􀀭􀁾􀀭􀀭1􀁐􀁲􀁄􀁪􀁾􀀨􀀬􀁬􀀠: Addison Fuel ,,, J I I I II I ill II I II II It , I I 1111 I III1 IIII 11" TEG R.Basso STRATUM
DESCRIPTION TAN & GRAY CLAY CLAY • will! limeslone fragmeuts & moisture See Figure Texas i I 􀁩􀀭􀀭􀀭􀀫􀀭􀀭􀀭􀀭􀀫􀀭􀀭􀀭􀀭􀀭􀁴􀀭􀀭􀀭􀀫􀀭􀁴􀁾􀀠. I i I I I, __ J__􀁾______􀁾􀁟􀀮---:----J
:'Ioisture at $.5' _.__.J 
Numocr LocatiOn rage 101 1 log of Boring B-27 See Fuel Farm R.BassoTEG STRATUM DESCRIPTION I; II lilt I I I 1\ I III''1 1,' "ll I1II , : I II , I j ,I I I I I I I . i . iI l I li;i I
I i I ! , . Ii'I__ 􀁾􀁟􀀭􀀭􀀭􀀭􀀽􀀭􀀭􀀭􀀢􀀬􀀽􀀭􀀭􀀽􀀭􀀭􀀭􀀭􀁣􀀭L _.l__J_____ ...--i·-------·-----i (Completion DCi-'ttl Date IWater Observ:ulollS . 3.0' 3114197 • No Groundwater Encou=n:::te:.:;cf:::
d,-__ 
---hgC'lofl.. NumberI log of BOring !Pr(lj(:cr------------􀀭􀀭􀀭􀀮􀀮􀀮􀀮􀀡􀁾􀀺􀁾􀀽􀀮􀀧􀀮􀀺􀁾􀁌􀀭􀀭􀀮􀀮􀀮􀀺􀀺􀀺􀀺􀁾􀁾􀂷􀁾􀀭􀀭􀀭􀀭􀀭􀀮􀀭􀂷􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀮􀀭􀀭􀀭...-.--_1 Texas 1-;:,􀁩􀁾,Addison
STRATUM DESCRIPTION 1 2 f-",,-j----+--+---'---,----..,--------------; I 􀀽􀀽􀁾􀀽􀀽􀀡􀁣􀀭􀀭􀀭􀀭􀀭􀁟􀀽􀁟􀀮􀀬􀀮􀀮􀀢􀁾􀁟􀁟􀁟􀀬􀀬􀀬􀀮􀀬􀁟􀀭􀀮􀀮􀀬􀀬􀀮􀀮􀀮􀀮􀀭􀀭􀀭􀀭􀀭􀀧􀀭􀀭􀁾􀀭􀀭􀀭􀀧􀀭􀀭􀀭􀀭􀀧􀀭􀀭􀀭􀀮􀀧􀀭�
�􀀭􀀭􀀮􀁊􀀧􀀭􀀭􀀭􀀮􀁬􀀮I CQmpletion D..:pth Date Water Observations ! 4.5' 3/14/97 No Groundwater Encountered . j 
2 Numb¢( Loclitlonlog of Boring ___J 􀁂􀀭􀁾􀁾􀁊..__-.::S::cee:..:Fc.:llg!!.:ur:.;e:....-._____ .___ Texas I I , I I I Addison R,Basso DARK GRAY CLAY . ! Ilui. _-..LIJJJL􀁃􀀮􀀺􀀾􀁭􀁰􀁬􀁾􀁴􀁩􀁯􀁮􀀠􀁄􀁾
􀁲􀁴􀁨􀀠􀁄􀀮􀀺􀁬􀁴􀁾􀀠Wafer observarions ---"---.. '--_...;3::.:."'5'_____--=311.4197 No Gn,ulld",aler EucoUDtered ___. ______... 
ATEe Associates, Inc. RECORD OF W 11310 Newkirk Street Dallas. Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 _,Client 􀁟􀁾􀁁􀀢􀀬􀁶􀁾􀁩􀀢􀀬􀁡􀀡􀀮􀀻􀁬􀀢􀁬􀀬􀀭􀀭____________________
Archilect Engineer --:-:---,-_,-_____=_=____:-:,-,_____ P,ojee. N,,,,e 􀁟􀂣􀀮􀁐􀀮􀀡􀀡􀁉􀁬􀁁􀁾􀁓􀁅􀀡􀁅􀀭􀀢􀁉􀁟􀁈􀀡􀀡􀀮􀁙􀁄􀀮􀀡􀂣􀁊􀁒􀁾􀁏􀀬􀀻􀀻􀁇􀁾􀁅􀀢􀀭􀁜􀁏􀁩􀀮􀀡􀁌􀀮􀀻􀁏􀀢􀀧􀁇􀀢􀁉􀁾􀁃􀀺􀀮􀀮􀀮􀀲􀁉􀁯􀀡
􀀺􀁎􀀡􀀮􀀮􀀡􀁖􀀲􀀺􀁅􀀢􀀧􀁓􀀢􀀧􀁔􀀢􀀧􀁉􀀢􀀢􀁇􀁣􀀡􀀡􀁁􀀧􀀢􀀧􀀢􀁔􀀮􀂱􀁉􀀡􀁤􀁏􀀮􀀻􀀺􀀻􀁎____ Project Loc-ation Addison! Texas ORILLING and SAMPLING INfORMATION oa Ie Started 122-87 Hammer
WI. ______ Ib$ Oale Completed 12-2-87 HammerOrop Crill foreman P. K. Spoon Sampler 00 in. Geologi$t M. cr..:ens ROCk COfe Oia Botmg Method H[SLA Shelby Tube 00 3.0 in. Ii!: 􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭
􀀭􀀭􀀭􀀭􀀭􀁔􀀭􀁲􀀭􀀭􀁔􀀭􀀭􀁾􀀭􀁾􀀠􀁾􀀠wSOIL CLASSIFICATION i 5J: j j.. "' 0.􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀱􀀠􀁾􀁾􀀠",0. =<=<0SURFACE ELEVAtiON < 80,;og • __-"B",-"1",I..>Ol.!W",-,,,1,-__
􀁾􀁢􀀮􀀠___􀁾􀀲􀁾􀀵􀁾􀀭􀁾􀁑􀁾􀀰􀁾􀀴􀁾􀀸􀁾􀀳􀁾____ . _______ Orawn By __􀀺􀁍􀀡􀀭􀀬􀀮􀁾􀁑􀁷􀀺􀀬􀀢􀀬􀁥􀁾􀁮􀀢􀁳􀀬􀀭􀀭___________ Apptoved By 􀁟􀀮􀀮􀁊􀁍􀁾􀀮Q>J;Wlie\:.O=S_______________ TEST
DATA BORING AND SAMPLING NOTES 􀁾􀀠l-II-l-I90 􀁾􀀧􀀢􀀠;);z<1>0 <n ,􀀭􀀬􀀭􀁨􀁂􀁾􀁲􀀭􀁯􀀭􀁷􀁮􀁾􀁇􀀽􀁒􀁁􀀭􀁶􀁩􀁌􀁌􀁙􀀠􀁓􀁁􀀡􀁾􀁄􀁙􀀠CLAY (SC) : [FILL MATERIALl 1 ,ST 30 802.0'---:---,--Dark
brown CLAY (CH) --2 ,ST 75: ...Ife... calcareous nodules -+-'..., l-lark brown 􀁓􀁁􀀡􀁾􀁄􀁙􀀠CLAY (CLl I, I5-=l3, ,,/abundant weathered LIHESTONE 16.0 "1 _ ST 60 60 Ifraoments 􀀭􀀭􀀭􀀭􀁾􀁾􀁾􀁾􀀠I-i
-l: Gral.weathered LIMESTONE , 4 CT 30 65 I-l-..,-:: I, -l, I--l10 I, l-Bottom of test boring @10.0' I: l.: Auger refusal @10.0' II--= -: 􀁾􀀠'l-I-c l15 -= I---􀁾-: ,l-I--:: -l.,-:I-l-I-'l'20I--I:
: 􀁾􀀠'" -'l-I--I: --SAMPLER TYPE GROUND WATER DEPTH BOAING METHOD 55 ORIVEN SPUT SPOON V AT COMPLETION FT. H5A -HOUOw STEM AUGERS ST PAESSEO SHELBY TUBE • AFTER 96 HRS 1.7 FT eM CONTINUOUS
fliGHT AuGeRS CA CONTINUOUS fLIGHT AUGER DC ORIVING CASING• WATER ON RODS FT.RC AOCKCORE 1.40 -MUD DRILliNG THO -TEXAS HIGHWAY DEPARTMENT CONE 
FIELD WELL COMPLETION FORM ,OB "UME: AVIALL -Addison .08 NUM8ER. 2.5-00483 "ADJECT MANAGER M.O",ens LOGGED BY. M. Owens ,EDITED BY WEll NAME. B-l/OW-l IOATE. DRILL1NG COMPANY, ATEC Associates,
Inc. eOUIPMEN1'. KJ 6.5.L.81NCH HOllOW STEM AUGER I-IOU;;5o __INCH ROTARV WASH DRILLED GALLONS Of WATER USED ouFUNG OFULL1N(i GALLONS METHOD OF OECONTAl"m'':ATION PRIOR TO ORllLrNG DEVELOPMENT
METHOD OF OEV£LOPMEt.JT, DEVELOPMENT 6EGAN OAT£ YIELD !TIME GPM, ;FiOM TO YIElD IrlME 10ATE CWM : f'::; 􀁏􀁾􀀮􀀬􀀠'0 VIELD !'W"E 􀁩􀁄􀁾􀀻􀁅􀀠C;Pt,f.jFROM 1 1000TE TOTAL WATEAJ;EUO'JEQ
DURING OEVfLOPMENT GALLONS oeSCRIPTION jF TURGIDITY o CLEAR o SUGHTLVCLOUOV AT END OF OEVEI.OPt.lENT o MOD TURBIO o \'Er:lV MUODY ODOR OF WATER WJ.TER O!SCHA(.I:GED o OFiOUND SURFACE
o TANr< 􀁈􀁾􀁕􀁃􀁋􀀠TO o STOAM SeWERS o STORAGE TANK o O;::;UM$ o OThER DEPTH TO WATER AFTeR OE\"ELOi'MEN'T fEET MATERIALS USED _.:4<-_ S'CKSQF coarse 8U,"'0'-_______ S'ND ___ S4CKS
OF _________________ CEMENT _-,2__ GALLONS OF GROUT USED ___ SACKS OF POWDERED SENTONITE __2...,,0,-POUNDS OF BENTONITE PELLETS 2.5 FEET OF _-,4'-_INCH PVC SLM.lK CASING 7 5 fEET OF
_-,4,-_.NCH pvc SLOTTED SCREEN ____ fEET OF INCH STEEL CONDUCTOR CASING o CHRIST¥ SOx o LOCKING STEEL COVER 1"1+--.. __ INCH DIAMETER STEEL CONDUC TOR CASING --_to 􀁾􀀢__ feet -----""__
INCH DIAMETER SOREHOLE SENTONITE-CEMENT SEAL OR -r--o &-SACK CEMENT SANDI SEAL ___ '0 ___ leel 'F=".----TOP Of CASING AT I I ! .Q"L " 1--+---0 􀁥􀁅􀁾􀀺􀁔􀁃􀁎􀁉􀁔􀁅􀀬􀁃􀁅􀁴􀀮􀁾􀁅􀁎􀁔􀀠Si:.":"LOR'-1I•
I 0 S-S;"CK CEMENT-SAND 'I SEAL 10 -==--lee'U􀀻􀀬􀀧􀁬􀀠EE""ON,n PELLET 􀁓􀁅􀁾􀁃􀀠..L..!L '0 􀁾.,,' 􀀮􀁉􀁾__ coarse 8/2Q _i 􀁾I ,,,':".'i;, 􀁜􀁴􀁻􀁕􀀧􀁾􀁥􀂣􀁒􀁉􀀠I S;":-"'C PACK L.<L
'0 ULJL ""i I b _ !NCH orA.METEA=,-'+,--i, 􀁓􀁌􀁃􀁩􀀧􀁩􀁾􀁄􀀠l 􀁾􀀮􀁌􀁏􀀬􀀭􀀭􀀭__ I 􀁾􀀬􀁯􀀱􀀰􀀮􀀰􀀠.... =i􀁩􀀫􀀭􀀧􀁃􀀢􀁾SC"EEN j SC,..::;DULE::O PvCj t 􀀭􀁾􀀬􀁾􀀢""""'" I 􀁓􀁌􀀧􀀺􀀧􀁴􀁾􀁋􀀠Sit..T
TRAP eel 􀁾FEET ABOVE AT BELOW GROUND lEVEL -1L.5.l8NCH DIAMETER 60REl-iOLE 􀁾10 l..O......JL feet __0_ INCH DIAMETER SCI"iEDUlE 40 pvC Bl,!.NK 􀁃􀁾􀁓􀁉􀁎􀁇􀀠-'.....!L '''' , 􀁴􀀭􀀺􀀺􀁔􀀷􀀰􀁴􀀮􀁾􀀺􀁅
􀁾􀁾CA.: . 10.0 .... ' 􀁾􀁟􀁾􀁬􀁅􀁁􀁎􀁅􀁄􀁏􀁕􀁔􀁔􀁏􀀠; lD....Jt lee!tJ_BOTTOM OF BOREHOLE l.O-..O.. leel ____ VARDICEMENT·SAND (REOI-MIX) ORDERED NOTE TO SCALE ____ YARD' CEMENT·SAND
(REDI.MIXI USED ADDITIONAL INFORMATION CONCRETE PUMPER USED" Xl NO DYES ••'ME _________________________ I I wELL COvER USEO lSi LOCKING STEEL COVER o CHRISTV BOx l o OTHER _______________
L_S_'_L_T_T_""_P_US_E_D_?_I!I_N_O__D_Y_E_S__F_'S_E_A_W_A_'P_P_E_O..􀁾􀁟􀁃􀁟􀁒􀁟􀁅􀁟􀁅􀁟􀁎􀀧􀁾􀁾􀁬􀁩􀀮􀁬􀀺􀀧􀀮􀀮􀀮􀀺􀀧􀁎􀁾􀁏􀀽􀀭􀁾􀁄􀀧􀀭􀀧􀀮􀁙􀀺􀀺􀁅􀀺􀁓___============::::===::::==-_

A.lEe Associafes, Inc. RECORD OF W 11310 Newkirk Sireel Dallas. Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 Client __􀁾􀁁􀀢􀁶􀀢􀀱􀀬􀀬􀀬􀀧􀁡􀀢􀀢􀁬􀀢􀀬􀁬􀁾____________________ Boring
_ Architect Engineer _______________________ Job' P'ojec' Name PHASE I HYDROGEOLOGIC INVESTIGATION Drawn By Project Location 􀁟􀀮􀀡􀀺􀁁􀁾􀁤􀁾􀁤􀀡􀀢􀁩􀀡􀀺􀀮􀀺􀁳􀁾􀁯􀀺􀁯􀁮􀀡􀀮􀀮􀀡􀀮􀀡􀀮􀀬􀁟􀀽􀁔􀁯􀀮􀀡􀁥
􀀺􀀮􀀮􀀺􀁸􀀡􀀡􀂷􀁡􀀺􀀮􀀮􀀺􀁳􀀧􀀭______________ Approved By ORILLING and 􀁓􀁁􀁍􀁐􀁌􀁉􀁾􀁇􀀠INFORMATION 12/2/87 t-'.,ammer WI Ibs. GROUND WATER DEPTHSAMPLER TYPE SS DRIVEN SPLIT SPOON
V AT COMPLETION FT. HSA ST PRESSEO SHELBY TUBE 'AFTER 96 HRS. 1.2 FT CFA CA CONTINUOUS FLIGHT AUGER DC• WATER ON ROOS FT. RC ROCK CORE MD Dale Started Dale Completed 12/2/87 H3mmer Drop
in. Drill Foreman P.K. $;>."Xln Sampler 00 in. GeOlogist M.Owens Rock Core Oia Boring Method H/S/A Slle1by Tube 00 SOIL CLASSIFICATION SURFACE ELEVATiON l'"brown coarse SASD i [TANK
BACKFILL] -' , --. -------Grav weathered . LIMESTONE --Bottom of Boring 11.0'--Auger Refusal @11.0' ', -, ---, ----. -, --------􀀬􀁾􀀠(SF) ;n 3.0 in. w ,."a:,.IW 􀁾􀀠> 2I w w 0Iw 􀁾􀀠􀁾􀀠<I􀁉􀀭􀁾􀀠""
U w 􀁾􀁣􀀮􀀠c.< :> . :> a: 􀁉􀀭􀁾􀀠wu <0 < 􀁾􀀺􀀺􀀠0 Coo "'z '" ;f. 􀁾􀀠1 ST 75 ---2 ST 80 5"': 3 ST 90----4 CT 65 ---10.5' 10 -u_ ------IS"': --------20--= ---------a: wI􀁾􀀠0 Z " 0
a: " s;: '" . 􀁾􀀠" 􀁾􀀠0 ;;E _ 0 0 00 ....U E􀁾􀀠C 􀁯􀁾􀀠'0 0'!o. ro 􀁃􀁾􀀠o , .0 c " ""􀁾􀀮􀀽􀀠o· '""-;;;􀀢􀀧􀁾􀀠-C􀁾􀁯􀀠􀁾􀁾􀀠:::> Zoe U'...J..z::::_oc. ;I:C)l-oc.O 80 90 80 80 BORING
AND SAMPLING NOTES BORING METHOD HOLLOW STEM AUGERS CONTINUOUS FLIGHT AUG:FlS DRIVING CASING MUD DRILLING ---c---------􀁾􀀠-----------------------------------􀁂􀁾􀀲􀀯􀁯􀁷􀁟􀀲􀀠25-00483
M OJ.zenS M. Owens TEST OATA 
FIELD WELL COMPLETION FORM o CHRISTY BOX JOB AVIALL Addison l o LOCKING STEEL COVER NAM' -JOB PROJ6Ct -=INCH OIAMETER 25-00483 STEEL CONQUCTORNVMBI!A MANAGER; M.Qwens CASING iOGG£O EDITED
___ 10 􀁾􀀮__feet BY M.<Nens BY; ""L' B-2!OW-2 OATE. 12/2/87 ---INCH DIAMETERNAME. BOREHOlE OfHLllNG ATEe Associates, Inc. --_IO_leelCOMPANY EQU!PMENT 􀁡􀁒􀁉􀁌􀀮􀁌􀂣􀁒􀁾􀀠􀁂􀁅􀁎􀁔􀁏􀁎􀁉􀁔􀁅􀁾􀁃􀁅􀁍􀁅
􀁎􀁔􀀠KHi....51S.c... "'OLLOW STEM AUGER P.K. SEAL OR o __INCH ROTARY wASH HOURS DARlED· 8-SACK CEMENT SAND SEAL GAl.A.ONS 0; WollER ___ 10 ___ feet USED OUo:!lNG 􀁏􀁾􀁬􀁬􀁬􀁩􀁎􀁇􀀠GALLONS
METtiOD Of DECO... 1AMtNATIQN 􀁐􀁒􀁉􀁃􀁾􀀠TO ORIUING TOP Of CASING AT DEVELOPMENT JL.O.....-FEET ABOvE AT BELOW GROUND LEVEL MEn'looOF • .1i....5J8NCH OIAMETEROEvEtOPt.tENT BOREHOLE
􀁏􀁅􀁉􀁴􀁥􀀺􀁌􀀮􀁏􀁐􀁍􀁅􀁾􀁔􀀠L 􀁾􀁬􀁯􀁕􀀬􀀨􀁌􀀬...􀁅􀁅􀁇􀀧􀀺􀀧􀁎􀁃􀁾􀁬􀁅􀀠TIME IYIELD 11I1.IIe IDATE __4_ INCH DIAMETeR 􀁇􀁐􀁾􀀢􀁉􀁆􀁐􀀧􀁏􀁍􀀠TO I I SCHEDuLE 40 PVC Hell; 􀁩􀁬􀁪􀁾􀁅􀀠!Cl.'.TE
BLANK CASING G.. 􀂷􀂷􀂷􀁾􀀢􀁆􀀼􀁏􀁍􀀠TO , .Q.:.Q... 10 -L.Q.. IE" 􀂥􀁉􀁅􀁅􀀱􀀮􀁾􀀠􀁾􀀠i.ME ir:..:.n:: i, G?!.q!!",::cu TO , , , . I o 􀀸􀁅􀁎􀁔􀁏􀁎􀁉􀁔􀁅􀂷􀁃􀁅􀁴􀀼􀁷􀁾􀁅􀁎􀁔􀀠i 􀁶􀁾􀁅􀁬􀀺􀀺􀀻􀀠1111.11
: II);.TE SEAL OR G?M,fROM TO I s-.SACK CEMENT·SANO 􀁲􀁏􀁩􀀻􀀮􀁾􀀠􀁾􀀢􀀢􀀧􀀺􀀧􀁔􀁅􀁁􀀠;::£o",O\,EO SEAL 􀁄􀁕􀀻􀀻􀀺􀁪􀁾􀁾􀀧􀁇􀀠DEvELOPMENT GALLONS -==-to -=fee! 􀁑􀁅􀁓􀁃􀁾􀁪􀁐􀀻􀀡􀁄􀁎􀀠J;􀁾􀁉OF'iU,,5r
DITV o CLEAR o SLIGHTLY CLOUDY BENTONITE PELLET.T EN!:> C' , j SEALOE\'E"OPMENT o MOO. TUFIBIO o VER'fMUDOY .!h.L 10 -LJL !... OOOAOF f8i20, 􀁗􀁁􀁔􀁅􀁾􀀠• coarse 􀀱􀀢􀀢􀀢􀀢􀁾􀀺􀀺􀀺􀀺􀁴􀀺􀀠..,􀁉􀁾􀁁􀁍
􀀠i -= \\':,':'1;;:1; o GROUNO SURfACE o TANK TRUCK SAND PACK OISC"':''lGEC -..l......D-10 J..L.j)leeITO o STORtJ. SEWERS o STOMae TANK I -1I := -.LINCH OIAME7ER.i I ,=L .om" .0"I :
-lOch) SCREEN =I ..l......D-.o Jl...iJ'''' I I, -"--INCH O'M.'E7ER 􀁾􀁓􀁃􀁈􀁅􀁏􀁕􀁌􀁅􀀮􀁏􀁐􀁖􀁃􀀠I BLANK SilT TrlAP , ==--10 -==lee1 , BOTTOM WELL CAP! ! 11.0 I", D' HOLE CLEANED OuT
TO J..L..1l leet BOTTOM OF 80REHOLE• JJ-.D..lee1 NOTE TO SCALE ADDITIONAL tNFORMATION: ___" , , o ORUMS o OTHER Di:P':'", TC WAlE=-. WAlE=-. 􀁁􀁆􀀺􀁅􀁾􀀠􀁄􀁅􀁶􀂣􀁴􀁏􀀢􀁾􀀢􀀮􀀽􀁎􀁔􀀠FEET
MATERIALS USED :i SACKS OF 􀁴􀀺􀁑􀁡􀁲􀀵􀁾􀀠!ll2Q SAND SACKS OF CeMENT J GALLONS OF GROUT usee SACKS Of POwDERED BENTONITE 20 POuNDSCF BENTONITE peLLETS I.Q FEET OF 4 INCH pvc BLANK CASING
10.0 FEET OF 4 INCH pvc SLOTTED SCREEN FeeT OF INCH STEEL CONDUCTOR CASING 􀁙􀁁􀁒􀁄􀀱􀁃􀁅􀁍􀁅􀁎􀁔􀁾􀁓􀁁􀁎􀁄􀀠,REOI-MIX) ORDERED YARD' 􀁃􀁅􀁍􀁅􀁎􀁔􀁾􀁓􀁁􀁎􀁏􀀠(REDI",MIX) USED CONCRETE
PUMPER USED? IX! NO DYES NAMa 'WELL COVER USED 􀁾􀀠LOCKING STEEL COVEA Cl CHAISTY BOX [J OTHER SILT TAAP uSEO" 10 NO Cl 'fES FISER WRAPPED SCREEN? :f) NO CJ 'fES 
ATEe Associates, Inc. RECORD OF 11310 Newkirk Street Dallas, Texas 75229 SUBSURFACE EXPLORATION..(214) 243-8931 CI;ent _-cA".v=i"'8"'l"'l_____________________ Atchiie<:! Engineer =cr...􀀽􀀽􀀽􀀽􀁾􀀽􀀽
􀀭􀀺􀀻􀀺􀀽􀀽􀀽􀀽􀀽􀀽􀀺􀁟􀀭􀀭􀀭􀂭P<o;o" Na... PHASE I HYDROGEOLOGIC INVESTIGATION Proiecl LocatIOn _,;;A:;:d:::d:::i:::s:::o:.:,n:.,;,c....:T:.:e:::xC!:a:::;s:!.-______________ ORILLING
and SAMPLING lNFORMATION 1212187Date Started Hammer WL Ib, I I SAMPLER TYPE SS DRIVEN SPUT SPOON ST PReSSED SHELev rUSE Y AfTER 96 HRS 2.0 CA CONTINUOUS FLIGHT AUGER • WATER ON RODSHe
ROCKCQREI Tl"O -!EXAS !"itGHWAY 􀁏􀁅􀁐􀁾􀁒􀁔􀁍􀁥􀁎􀁔CONE Date Completed 12[2[87 Hammer Clop in Crm foreman P.K. Spoon Sampler 00 in. Geologist M.O. Roell Core Cia. in. 80rlng Method
Hlf?lA Shelby Tube 00 in. W..,.. >:>SOIL CLASSIFICATION ;::1: w W :l:w 􀁾􀀠􀁾􀀠<I􀁯􀀭􀁾􀀠Q. 0. ",0. 0.< 􀁾􀁏􀀠:> SUAFACE ELEVAT10N o-W wt) ".,0 0", v>Z '" -Dark Bro,",'ll SANDY CLAY
(CL) -ST--1--, --' ST-2-----5"': 3 ST -6.0' : --·Gray SILTY CLAY J:Q;;L 6.5' -' ..:::. Weathered tan·and gray LIMESTONE ...: 4 CT ---Bottom of boring 8.0' --Auger Refusal @8.0' 10":::'------:--::
-:: ---...: 15 ..:::. : ----...: ..:::. -------20 -,-----: : -:: --I -----􀁾􀀠:>:: P.". 0 􀁾􀀠C BORING AND0 􀁾􀂭""E _ 0 SAMPLING NOTESc: 0 􀁾􀀬􀁧􀀠" UI ;; o 􀁾􀀠·M. >... c c "" 􀁾􀀠u
-􀁾􀁯a: 􀁃􀁾􀀠o 0 '" 􀁾􀀠.u C '" '",. D 􀁾􀀠E .0 '"0 Z "'" .. ., :_ C t) g 􀁾􀀠e C;I 0 ::>UI 􀁧􀁾􀁟􀁧􀁘c: Za: '" i;$ " Ol-oc..O 50 3 60 27 60 ,,0 40 0 ------: -----:: : ---:--------'-----c''GROUND
WATER DEPTH V AT COMPLETION HSA -BORING METHOD HOllOW STeM AuGERS Bofing II __.llBc::-"3"/.l.O,,w,,-=-3:L Job • __􀁾􀀲􀀼􀀮􀀺􀀢􀀭􀀵􀀺􀀺􀀺􀀺􀀭􀁬􀁊􀁏􀁬􀁊􀁏􀀢􀀬􀀴􀀢􀀬􀀸􀁵􀀱... Drawn By _-IM"""Ow=e",n",s,
,-_____ Approyed ay -!M:!.."'O"'''''''es.nw.s _________ TEST OATA CfA CONTINUOUS FLIGHT AUGERS oc DRIVING CASING MO -MUOQRllUNG 
FIELD WELL COMPLETION FORM ,0B ",,c,tAE PHASE I HYDROGEOLOGIC;..INVESTIGATION PROJECT N!,)MBER ,0. 25-00483 MANAGEA: MAO EOITEOlOGGED ey ley-MAOti. 􀀲􀀺􀁩􀁩􀁾􀁯􀀮􀁓􀀠IDATE' NI.M£ DRILLING
",HL B-3[OW-3 12[2[87 COMPANY: ATEC Associates Inc. ORIt..\.E"EOUIPMENT P.K.IXI LS./IBCH HOllOW STEM AuGER HOU,c;S _0 ,_INCH ROTARY WASH DRilLED GAllONS OF WATER uSED OUI=lING Of:UlI.ING,
GALLONS METHOD OF DECONTAMINATION PRIOR TO DRILLING DEVELOPMENT METHQDOF DEVELOPMENT OEVELOPt./.ENT aEGAN Ol.H: TIME YIELO . I􀁔􀀱􀁾􀀮􀁾􀁅􀀠 Ic::n: ,"PM ,FROM TO : YIElD I11ME G;:>tArFROt.<
TO 1°'"' 'ftSt.\,) jTIME ;C.:.rE ClFMIFROM '0 , , : YIEi.C 'rIME [O':'T!:I G;:>tA FROM TO TOTAL W';'T€F. REMOvEO DURlf'fG DEiVELOPMENT GALLONS DESCRIPTION Of: 'fUR9IDITy o CLEAR CJ SLIGHTLY
CLOuDy.:.T ENO OF DEvELOPMEf'fr o MOD_ TURBID o VEAYMUDDy ODOR OF WATER WATER o GROUND SURFACE o TANK TAVCK DISCHARGEO TO o STORM SEwERS o STOMP-GE TANK o DRUMS DOTH€R OE?TH TO WATER
AFTER OEVELOPMENT FEET MATERfALS USED 6 SACKSO' S':'''IiO SACKS OF CEMENT J GALLONS GALLONS OF GROUT USED SACKS OF POwDERED BENTONITE 20 POUNDS OF SENTONITE PELLETS !'Q FEET OF 􀁾􀀠INCH
pVC BLANK CASING 7. Q FEET OF 4 INCH pvc SLOTTEa SCREEN o CHRISTY SOX I0l1-=1-W LOCKING STEEL COVEA INCH DIAMETER STEEL CONDUCTOR CASING 'O ___ 'eCl -___ INCH DIAMETER BOREHOlS ___ '0
___ leet 􀁂􀁅􀁎􀁔􀁏􀁎􀁉􀁔􀁅􀁾􀁃􀁅􀁍􀁅􀁎􀁔􀀠SEAL OR e.-SACK CEMENT SAND SEAL 10 ___ leel • TOP OF CASING AT 􀁾FEET ABOVE AT BELOW GROUND lEvEL ----u.L8 fNCH DIAMETER BOREHOLE 􀁾􀀧􀁏􀁾􀁦􀀮􀁥􀁴􀀠4
INCH OIAMETERI I, SCHEDULE 40 PVC 6LANK CASINGI 􀁾􀀺􀁯􀁊􀁾􀀧􀁥􀁥􀀬􀀠o 8EN'ONITE·CEMENTI SEAL OR 8-SACK CEMENT 'S;"NO SEAL 􀁾􀁾􀁟􀀧􀁯􀀠(eel -:"':'! BENi"GNITE PELLET 􀀮􀀻􀁾􀀠i :<1 SEAL
..2.:2... 10 LLf••,􀁾􀀠CDarse 8i20 f=L tN'M,' ,"UMO'",SAND PACK 􀁾'0.!l...L f••, 4 INCH Dl;.METER I SLOTTED ••010= 􀁉􀁮􀁃􀁾􀀱􀀠SCREEN-􀁾10 ___􀁾teel--= --INCH OIAME fER SCHEDULE .:.0
pvC BLANK SILT TrIA.P -==--10 -=--feel I eOT1Qt.1 WELL CAP 8.0 '••' HOLE CLEANED OUT fa f 􀁾􀁦􀁥􀁥􀁬􀀠!, BOTTOM OF eOREHCh.€ i I...B...O-feel , : ,; I i I , I '--:" 􀀺􀁾􀀠I ! U',' FEET
Of INCH STEEL CONDuCTOR CASING YARDJCEMENT·SAND (REOI-MIX) ORDERED VARD' CEMENT-SAND (REOr·MI.Xj uSED CONCRETE PUMPER USEO? l:J NO DYES NAME ______________________________________________
NOTE TO SCALE AODllI0NAL1NFORMATION" i, i ,, ! WELL COVER uSED mLOCKING STEEl COvER o CHRISTV BOx o OTHER __􀁾􀁾__________________________ SILT TRAP USEO" mNO 0 VES FIBER WRAPPEO SCREEN"
mNO 0 YES i 
------ATEeW Associates; Inc. 11310 Newkirk Street RECORD OF '-.""1 Dallas, Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 CII.n, __A=v..;i"'a"l"'l=-_____________________ 8°"09 • __􀀭􀀺􀀺􀁂􀀺􀀺􀀻􀀭
􀀺􀀧􀀴􀁾􀀯􀀺􀀻􀀺􀁏􀀻􀁗􀁾􀀭􀀢􀀻􀀻􀀴􀀧􀀭􀀭􀀭􀀮􀀭􀀭􀀭􀀭Job' 25-00483 --Atct'lifecl engineer ;;-;-;:;-;::-::-=======::-c====:-:-:==---Project Name PHASE I HYDROGEOLOGIC INVESTIGATION OfSWI"I
By 􀁟􀀭􀀡􀀢􀀬􀁍􀁾􀀮􀁾􀁏􀁷􀀽􀁥􀁾􀁮􀀺􀀧􀀺􀁳􀀭􀀭􀁟􀀭􀁟􀀭􀀭􀀭􀀭􀀭􀀭􀁟􀀠Projeci Location Addison? Texas Approved By 􀁊􀁍􀁌􀀬􀀢􀀧􀁏􀁷􀀢􀀢􀀢􀀧􀁥􀀢􀀧􀁮􀁩􀁬􀁬􀀻􀁪􀁳􀁾__􀁾________ ORILLING aod
SAMPLING INFORMATION TEST OATA12/2/87 ______ 1••.Date Started HammerWt 12/2187Da!e Completed Hamme' Drop P.K. 0: W ,. --0: 􀁾􀀠w > 1) §1 u 􀁾􀀠,g :> 75 60 80 90 BORING ANO SAMPLING NOTES
Dnll Foreman Spoon Sampler 00 in. M.OwensGeologist Rock Core 018. in, H/S/A ,noBOling U.elhod Sl1etbY Tube 00 􀁾􀀠,􀁲􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀻􀁾􀀭􀀭
􀀮􀁟􀀭􀀭􀀭􀀮􀀬􀀭􀀭􀀱􀀠􀁾> SOIL CLASSIFICATION 2 􀁾􀀠I W W <__ 􀁾􀁾􀀠􀀠􀁾􀀠't. SURFACE ElEVATION 􀁾􀁾􀀠􀁾􀁾􀀠􀁾􀁾􀀠􀁾􀀠-' 1Coarse SAND (SP) -80 BACKFILL] WSTSOi)i:::: Brown --I -, 2 :ST
80 :cf,.. 80 -􀀬􀁾􀀢􀀠-􀁾􀀠~ ~ j -,.....; 4 'CT 80 ----3 ___,..1",,0.,.;,0"-1 10iJ -601Grav weathered LIMESTONE ! 􀁾CT --􀁪􀀭􀀱􀁆􀁂􀀽􀁏􀀽􀁴􀀽􀁴􀀺􀀺􀀺􀁏􀀽􀁴􀁮􀀽􀁏􀀽􀁦􀀽􀁂􀁾􀁯􀀺􀀺􀀺􀁲􀀽􀁩􀀽􀁮􀀽􀁧􀁾􀁬􀁾
􀁉􀀽􀀮􀀡􀀺􀀺􀀡􀁏􀀽􀁦􀀽􀀽􀀽􀀽􀀽􀀺􀀺􀀺􀀺􀀺􀀻􀀠.: --JAuger Refusal @11.0' --: :-15 ...:-::----:-------= ----------20 ...: -::------: -,--ff--I SAMPLER TYPE GROUNO WATER DEPTH BORING M!!THDO
DRIVEN SPLIT SPOON fJ AT COMPLETION FT. HSA HOll"OW STEM AUGERS Sf PRESSED SHELBY TUSE CONTINUOUS FLIGHT AUGERS • AFTER 96 HRS 1 , 5 FT. eFA CA CONTJNUOUS FuGHT AUGER DC OfHVING CASING
• WATER ON RODS FT.RC ROCK CORE MD MUD ORILLING THO _ TEXAS HIGHWAY OEPARTMENT CONE 55 
----FIELD WELL COMPLETION FORM JOB NAME JOB NUMIS£A. AVIALL -ADDISON 25-00483 IPROJECT .MANAGER: M.Owens l.OGOW B' M.Owens IEDITEO :8Y, WEll NAME B-4/0W-4 100TE-12/2/87 CRILLING COM
PAN"'. ATEC Associates, Inc. eoulPMENT OFUt.LEA 10 ..6....:UIlcH HOLLOW STEM AUGER P. K. rHOURS a INCH ROTARY 􀁗􀁁􀁓􀁈􀁾_____-.li::.O",-'.:l::l'::O=-____ GAu.ONS OF VIATEFl uSED OUFUNG
DRilliNG GALLONS o CHRtSTY BOx 􀁲􀀻􀀺􀀺􀀺􀀻􀀺􀀽􀀽􀀽􀀽􀀺􀀺􀀻􀀺􀁾􀁬􀁬􀀠Cl LOCKING STEEL COVER INCH DIAMETER ll---r=_u STEEL CONDUCTOR CASING -__ to_leel ---_____ INCH DIAMeTER BOREHOLE
---tOO_leel 10I--n BENTONITE-CEMENT SEAL OR 10I--n 􀁾􀁓􀁁􀁃􀁋􀁃􀁅􀁍􀁅􀁎􀁔􀁓􀁾􀁎􀁄􀀠SEAL ___ 10 ___ leel METHOO OF DECON'r.t.M1NA TlON PAIOR TO DRILlING. DEVELOPMENT METti'OO OF DEvELOPMENT
DEvElOPMENT EEG,t,NOATE'. TIME YIElD TO ITIME. GPM!tRO',Il TO 'Tlt.t= 􀁇􀁐􀁍􀀧􀁦􀀧􀁮􀁏􀁾􀀱􀀮􀀠TO YIELD 'TIME lCI.':i; ______􀁏􀀺􀀺􀀮􀁰􀀧􀀭􀁍􀀺􀀺􀁊􀀱􀁆􀁾􀀺􀀺􀀮􀀰􀁾􀁍􀀽􀁟_____􀁾􀁦􀀮􀀺􀁏􀀽􀁟________'_i_
________ TOTAL wATER FlEMOVEO DURING DEvElOPMENT GALLONS OESCFUPTION OF TUFIBrOITv o o CLEAR a SLIGHTLY CLOUOV 1.1 END OF DEVELOPMENT o MOO. TURBID a VERY MUDDv ODOR OF W4TER WATER o
GROUND SURFACE o TANK TRUCKOISCI"fARGEO TO o STORM SEWERS o STORAGE TANK o DRuMS o OTHEr; DEPTH TO wATER AFTER OEvELOPMENT FEET MATERIALS USED 6 SACKS OF 􀁟􀀭􀀭􀀬􀁃􀀢􀁯􀀬􀀭􀀬􀁡􀀢􀁲􀀢􀁳􀀳􀀮􀁥􀁾􀁟􀀭􀀢�
�􀀬􀀭􀀬􀀯􀀬􀀬􀀲􀀬􀀬􀀬􀀰􀁾_________ SANO ___ SACKS OF _________________ CEMENT 􀁟􀁾􀀳􀀬􀀭􀁟􀀠GALLONS OF GROUT USED ____ SACKS Of POWDERED BENTONITE 20 POUNDS OF BENTONITE PELLETS 1.0
FEET OF _.::4,-_ tNCH Pvc BLANK CAS1NG 10.0 FEET OF _..:4,--_ INCH PvC SLOTTED SCREEN ____ fEET OF INCH STEEL CONDUCTOR CASING YARD' CEMENT-SAND (REDI-MtXj ORDERED YARDJ CEMENT-SAND
(REOI.MIX) USED CONCRETE PUMPER USEO? C!I NO DYES NAME ___________________________ WELL COvER USED iii LOCKING STEEL COVER o CHRISTy BOX D OTHER ________________ SILT TRAP USED" II NO
DYES FIBER WRAPPED SCREEN? i) NO Cl YES , • , L 􀁾􀁉􀀠􀁾􀀠-=,1 TOP OF CASING .:.T 􀁾FEET AeOVe: AT BELOWGROUNQ LeVEL 􀁾􀀬􀀸􀁎􀁃􀁈DIAf.lHEF1 BOREHOLE ..Q.JL 10 11 • °"., iL-INCH DIAI.',E7ER:
SCHEOULE ,1,0 pvc BLANK CASING ..fh(L 10 1.JJ_ "" aENTQNITE·CEI.t:;:-';i SEAL OR &-SACK CEMENT·S':'ND SEAL 􀁾10 -=-=--􀁾􀀺􀀺􀁾􀀻􀀺􀀠T BENTONITE FELLE' SEAL. ..11......5.-to -LiL :e:'1H
fC;f°liajirx:.ss.ee_ 􀀭􀀭􀀭􀀭􀁣􀀭􀀭􀀡􀀡􀁾􀀮􀁍􀁄iN...Io.IEI S",!/",i.;;1 SAND PACK It-..L..£L 10 .-ll...JJ ,,,, ___4_ INCH CtAl.1E.':::=1. SLOTTED ,,,.,,,0-,,1,,,0___ I meN SCREEN ..!..c!L
10 2.L.9-,,;-I INCr! 􀁄􀁴􀁁􀁴􀀮􀁾􀁃􀀺􀀠i£:R SCH£OULE to pvC BLANK SILT TRAP ==---10 --==-􀁾􀁥􀁥􀀡􀀠60TTOM WELL CAP O 􀁾􀀧􀁥􀁥􀁬􀀠• HOLE 􀁾􀁌􀁅􀁁􀁎􀁅􀁏􀀠OUTTO 􀁾􀁉􀁥􀁥􀁴􀀠_BOTTOM Of BOREHOLE
11.0 '..I NOTe TO SCALE AOOITIONAL INFORMATION 
i AlEeW Associates, Inc. 11310 Newkirk Street RECORD OF ....􀁖􀁾􀀠Dallas. Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 Clieot 􀀭􀀬􀁁􀁾􀁶􀀺􀀡􀀮􀀡􀁩􀁾􀁡􀀢􀀬􀁬􀀢􀀬􀁬􀀽􀀭______________________
Bo,;ng • 􀀭􀀭􀀭􀀻􀁂􀀻􀀮􀀭􀁾􀀵􀀧􀀺􀁩􀀯􀁾􀀰􀁾􀁗􀀺􀀧􀀭􀁩􀀧􀁩􀀵􀁾__________ Architect Ei"Igineer _________________________ Job , 􀁟􀀭􀀭􀀺􀀺􀀲􀀵􀀢􀀧􀀭􀀻􀀻􀀬􀀰􀁾􀁏􀀢􀀬􀀴􀀬􀀬􀀸􀀬􀀭􀀽􀀳􀁾_________
P'.,ecl Name PHASE I HYDROGEOLOGIC INVESTIGATION 􀁏􀁲􀁡􀁾􀀠By M. Owens 􀁁􀁐􀁰􀁾􀁶􀁥􀁤􀁂􀁹􀁬􀁍􀁌􀁊􀁏􀁷􀁾􀁥􀁡􀁮􀁵􀁳􀁳__________________Project Location Addison. Texas ORILlING and SAMPLING
INFORMATiON TEST DATA Date Started Hammer Wt. Ibs.12/2/87 OaIe Compleled ll.l.1;187 HammerOrop ;n 􀁾􀀠Qrill Foreman P.K. Spoon Sampler 00 ii'l. :c ""' • '" H.Qwens e 􀁾􀀠80RINGANDGeologist
Rock Core Di8. in. • .-E _ 0 "" SAMPLING NOTES H/s/A a: E 00 "1.0 E-Boring Me:hod Shelby Tube 00 '0 w u oe .,.; w 􀁾􀀠>􀁾􀀠C ". '"c. 􀁾􀀠0'􀁾􀀠c: c" ., '" r >w -0 CQ'l! ,. 0 !!: .: 􀀦􀀻􀁾􀀠'"SOIL
CLASSIFICATION ;:r w w 0 " 􀁶􀀾􀁾􀀠'" :tw 􀁾􀀠oJ U ;) ;:0 _ c ,,>... 􀁾􀀠C. c. w 􀁾􀂣􀀠:z,c;c. c.< :> . :> 0 􀁯􀁾􀀠􀁾􀀮􀀠SURfAce ELEVATION ,..w wu <0 < " c: 􀁾􀁃􀀺􀁯􀁾􀀸􀀠z !<nO Ov>
u>Z U> "$ " :t: -Dark brown SA1<DY CLAY (CL) -I: : 1 ST 60 25 l-I-1 I-f-2 i ST 6' 25 I-4.0' jGray . 513 !ST weathered LIMESTONE ...J 6C 25 e-􀁾􀀠. f! :' 4 •ST 5C 25 f. l---' i.-:f-Bottom
of boring 7.25 --f---􀀱􀀰􀁾􀀠e-------I--f--i: -􀁾---􀁾---: 􀀱􀀵􀁾􀀠e--I--I--I--I-􀁾􀀠i--I--I--I.:. 20':' l-e---I--I: -I-I-:-􀁾--􀁾􀀠-f --ISAMPLER TYPE GROUND WATER OEPTH BORING METHOD
SS CRIVEN SPUT SPOON V AT COMPLETION F1 H5A -HOllOWSTEM AuGERS ST PRESSEO SHELBY Tuse , AFTER 96 HRS 1.0 FT CFA CONTINUOUS FLIGHT AUGERS CA CONT1NUOUS FliGHT AUGER OC DRMNG CASING• WATER
ON ROOS FTRC ROCK CORE MO -MUO ORILLING THO -TEXAS HIGHWAY OEPARTMENT CONE 
__ FIELD WELL COMPLETION FORM a CHRISTY BOX -;::;====:::::;;:;-]1 a LOCKING STEEL COVER :';';"£ AVIALL -ADDISON [,=,.. :J INCH DIAMETER H.Owens EDITED 6' N.Owens OATE. 12/2/87􀀮􀀺􀀺􀀮􀁾􀀡􀀺􀀺􀀮􀁾􀀺􀀺
􀀺􀀮􀀧􀁅􀀮􀀮􀀮􀀮􀀮􀀮􀀬􀀬􀁟􀁂􀀭􀀵􀀯􀀰􀁗􀀭􀀵􀀠.. C Ch1.LU.Q A • t I CC)'.';-A'l'l' A'I'EC 􀁳􀁳􀁯􀁾􀀮􀁬􀀮􀁡􀀠e::s:::!,.....::.:n::.c::.:._____-r.:=-:c::-____ DRILLERlS6....5J8JCH HOLLOW
STEM AUGER P.K. a INCH ROTAJ1Y WASH --.--:!"',,:,uO".$ OJ' \"JJ..tER GALLONSv$( 0 OUA•..o Dftn.1..1NG :-r--STEEL CONDUCTOR CASING -__ to M. feet --__ iNCH OIAMETER eOREHOLE ___ 10 􀁾􀀮__
leet 101--0 BENTONITE-CEMENT SEAL OR101--0 B-SACK CEMENT SAND SEAL 'O ___ fee! ... [ 􀁾...CO '0" O£CCNTA,·.IJIIIATlON t'Q.OI'l JOOi:l,llUI\IG ' DEVELOPMENT 􀂷􀀢􀁛􀁾􀁜􀁯􀁯􀁏􀁄􀁏􀁦􀀠C'lE
􀁾􀀧􀁃􀁌􀁯􀁲􀁍􀂣􀁴􀀨􀁦􀀠Crv€lOf'tt(NT t'(f.':"" O:'f£ TIME ".rlO TIMEI GP'M Fl10M TO 􀁾􀀺􀁬􀀠􀁾􀀠0 ITtME 􀁉􀁏􀁾􀁔􀁅􀀠G;::I·.i;H1OM TO "'f k:J !nt,te: GP'A;f9OM '0 ""tl.C !TIME C;PMI':RQM
TO 􀁾􀀨􀀻􀁾􀁕􀀮􀀠L \<;ATEI% t:\EMOVED tlLJ!UNG OEV!lCFUENT GALLONS 􀁏􀁅􀁾􀁁􀀬􀁲􀁔􀁬􀁏􀀡􀁬􀁬􀀠Of TiJRSID/TV o CLEAR o SLIGHTLY CLOUDYArtNOQF' 􀁃􀁛􀁖􀁦􀁬􀁏􀁐􀀧􀁾􀁅􀁴􀀮􀁬􀁔􀀠o VERY MUDDY
\vA rEA o GROUNQ SURFAce: o TANK TRUCKO.SCHM<GED TO o STORM SEWERS o STORAGE TANK a DRUMS o OTHER 􀁃􀁬􀀢􀁾􀁏􀀧􀁦􀀠􀁾􀁏􀀠,..;ATE#; ... r:i;R C£\'EtOPuENT FEET MATERIALS USED 􀀭􀁾SACKS
OF _....lc;JO;Lail.rI:fiS.!le'-___-ll8LI.L.2j.OL-___-: SAND ----SACKSOF _________________ CEMENT _--,,2 .... GALLONS OF GROUT uSED ---SACKS OF PI'WOEREO BENTONITE o==""-----TO;;> OF
CASING AT -D......lL FEET ABOVE AT eELOW GMOUND LEvEL 1---!:i-2!S,CH DIAMETER BOREHOLE 0.0'0 7 . 25 ,••, 1·-t---,_-,4L_ INCH DIAMETER 1 SCHEDULE.!O PVC ' BLANK CAS1NG .JLJL 10 .l...2.5.
fee!I􀁾􀁉􀀧􀀭􀀭􀁗􀀠EENTONIT2·CEMENT SE;"L OR .....1:--0 5-S';CK CEMENT·SAND SEAL -==--to -==---leel ••􀁾􀀻􀀭􀀭􀀭􀁥􀁅􀁎􀁔􀁏􀁎􀁉􀁔􀁅􀀠PEUET -,-·-1 􀁓􀁾􀀻􀀢􀀮􀁌􀁏􀀠10 􀁾iee! coarse 8/20
Ikl;,M£, I SAND PACK 2.25 :0 leel-I_I-.;...--__􀁾􀁟INCH D!AMETE.A I= I, SLOTTED r OJ C􀁦􀁬􀀱􀁃􀁾􀁩􀀠SC;:';EEN i 2.25'0 7.25 r••, f • -==-lNCH QIAt.1ETER USLANK SILT TRAPi l<....___SCHEDULE':O
pvC -==--to leel SOTTOM ......·ELL CAP 􀁾􀀡􀁥􀁥􀁬􀀠>-----I___HOLE CLEANEO OUT 70---POUNDS Of BENTONITE PELLETS 1.25 I ..1....r...1:t leel L _____BOTiOM Of BOREHOLE FEET OF _,,4__ INCH
PvC SLANK CASING 5.00 FEET OF __-.:4,,-_ INCH PVC Sl.OTTED SCREEN 7.25r•• , ---FEET OF ____INCH STEEl. CONDuCTOR CASING NOTE TO SCALE----YARDlCEMENT·SANO (REDI.MIX, ORDERED -----YAFlD1CEMENT·SAND
IREDloMI):; uSED ADDtTIONALINFORMATlON· CONCF;ETE PuMPER USEO? ID NO DYES NAME ____________________________ WELL COvER USED Ki LOCKING STEEL COvEA CJ CHRISTyeoX CJ OTHER SILT TFiAP USEO"
(! NO 0 YES FIBER WRAPPED SCREEN? IX! NO 0 YES 
--------. ":::..:":.-..-ATEeW Associates, Inc. 11310 Newkirk Street RECORD OF -'"' '"VI Dallas, Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 AviallClienl .-:.::.:...:==___ Arcnile<:t
Engineer _ ___.. __􀁾􀁾􀁾􀁟􀀠PHASE I HYDROGEOLOGIC INVESTIGATIONProject Name ProleCt Location Addison, ..!T'-'e'-'x'"'a,.s'-______􀁾􀀮______ DRILLING and SAMPLING INFORMATION Dale Started
11/24/87 Hammer Wt !tls. 0'" Com.'.'ed illz.illl__ Hammer Drop in. Ordl Foreman _P_·X-'-____􀀮􀁾􀀮􀁟􀀠Spoon Sampler 00 in. Geologist 􀀮􀁾􀀠C. !lybIe ROCk Cote Oia ,n Boring Method JL.1L
A . Sherby Tute 00 in, 􀁾􀀠􀁲􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀮􀀬􀁟􀀽􀀭􀀭􀀮􀁟􀀭􀀬􀁟􀁾􀀠> 􀁾􀁉􀁌CLASSIFICATiON I 􀁾􀀧􀁩􀀧􀀺􀀠Ii': 􀁾􀀠􀁾􀀠I I 􀁥􀀺􀁾􀀠0.< 􀁾􀁡􀀠j 􀀡􀁾􀀻􀁾􀀠􀁾􀁉􀁾􀀻􀁩􀁾􀁾
􀁾􀁉􀁪􀁾􀁔􀁳􀀨􀁃􀁷􀁴􀁪􀁾􀁧􀀽􀀺􀀠--: Dark Bro;m CLAY (CH) with -calcareous nodules -Brown below 4.0'. -Light brown laminated SILTY: -CLAY (CL) Tan 􀁷􀁥􀁡􀁴􀁨􀁾􀁥􀀭􀁲􀀭􀁥􀀭􀁤􀀬􀀭􀁾􀁌􀁾􀁉􀀭􀁍􀁅􀁓􀁔􀁏􀁎�
�􀀠-Botton of test boring at B.O' ....:: Auger refusal at 8.0' : : -: ---: .::. : : ,--: ,: -SAMPLER TYPE 5.0 7.5 -f -2 5 -3 ---....::' 4 --10 ....:: ---....:: : : 15 -: ------20------:
--25 ; 􀁾􀀠ST ST ST CT GROUND WATER DEPTH 5S DRIVEN SPLIT SPOON • AT COMPLETION DRY ST PRESSED SHELay TU6t: l' AFlCR HRS. T T Boring If 􀁾􀀻􀁟􀀻􀁂􀁾􀀭􀀺􀀺􀀻􀀶􀀻􀀧􀀢􀀻􀀻􀁟􀀺􀀻􀁟􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭�
�􀀭􀀭Job' 25-00483 O,.,.n By .JH'Z'--;::;;-__________________ Approved By 􀁾􀀮􀁄􀀠TEST OATA >a: w >0 0 w c: if' 00 00 00 10C 􀁾􀀠0" "􀁾􀀠􀁾􀀠E tJ)• goe 􀁾􀀠0 eoe EW Q ....oe'" >-"o .-=
" -V.,=-" ".􀁾􀀠.-u a 􀀮􀁾􀀠=" <II"'= "-';; '" 􀁾􀀻Z :;:; 3:. -= '" 0 :::> 9 g g ·0 Ic: "-􀁾--=.5 Ea. 0 z 15 90 4 45 FT. HSA _ CFAFT. BORING ANO SAMPLING NOTES e-flfr􀁾􀀠-: -----: -:
----: --'r-l-e-frflfI􀁾􀀠lfIBORING METHOD HOLLOW STEM AuGERS CONTINUOUS FLIGHT AUGERS 
AlEeV Associates, Inc. RECORD OF 11310 Newkirk Street'"VI Dallas, Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 Chent -=:A:.;v:.;i:.;a:.;l:.;l=-_____________________ Bonng /I 􀀭􀀻􀀻􀀻􀀻􀀭􀀻􀁂􀁾􀀭
􀁾􀀶􀀻􀀭􀀻􀀻􀀺􀀻􀀭􀀭___􀀭􀀭􀀭􀀭􀀭􀀭􀁾􀀠Job' 25-00483A.rchltect Engineer __ 􀀭􀀭􀀽􀀽􀀭􀁾􀀭􀀽􀀭􀀬􀀭􀀬􀀬􀀭􀀬􀀺􀀭􀀽􀀬􀀮􀀮􀀬􀀮􀀮􀀮􀀮􀀽􀀭􀀭􀀭􀀭􀀺􀀭􀀺􀀬􀀬􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭 Ptcjecr Name PHASE
I HYDROGEOLOGIC INVESTIGATION Drawn Sy --'D"'PwZ"-=-_________􀁾􀀠 Projectloclition Addison, Texas 􀁁􀁾􀁰􀁲􀁯􀁾􀁤􀀠By __G...D"-___ ORU.LING and SAMPLING INFORMATION TeST DATA Date Started
HammetWt. 1£>5.J 1124/87 Oat.Comp,.,," 1I/24/87 Hammer Drop in, 􀁾􀀠S Onl! foreman P.K. Spoon $.a:mpte( 00 ;0 0"• 􀁾􀀠Geologist C. Ruble 􀁁􀁯􀁣􀁾􀀠Core Oia, ;0 'E BORING AND 0 omE _
0 eo SAMPLING NOTES '" • • 0 "BOring MethOd H.S.A, Stle!by Tube 00 in. w ;:; E-o· 'Mw > 􀁾􀀠􀁾􀀠. 􀁾􀁾􀀠."􀁾􀀠:5 􀁾􀀠0'> 􀀮􀁾􀀠" 􀁾􀀠-u ." SOIL CLASSIFICATION ::; > 0 w. •• ., I 2" w
w 0 z Vi; ..-;, "":l:w 􀁾􀀠􀁾􀀠-. 􀀼􀁾􀀠􀁾􀁾􀀠􀁾􀀠II. U ;:, 􀁾􀀠. ·0 􀁾􀁯􀀠:i 􀁾􀀠0 x_ ::>c:o. 0.< Of:: U' SURFACE ELEVATION >-w wu <: c: B;:Ec:5 􀁾.,0 0", :..:2: ., 􀁾􀀠'" -FILL -Brown
SANDY CLAY (CL) I 􀁾􀁓􀁔􀀠----with LIMESTONE fragments i 2. a 00 15 ---Dark Brown CLAY (CH) with I 12 5T ,-calcareous nodules ,.. ! 00 90 ----Brown below 4.0' 5.0 I 5 -3 5T OJ l; -r--,..
-Light brown laminated SILTY ---CLAY (CL) 7.5 ----4 ;CT 10 45 r Tan weathered LIMESTONE >orr--Botton of test boring at 8.0' 􀁾􀀠---Auger refusal at 8.0' ----..I 􀁾􀀠--,.. --􀁾􀀠---:
: -,.. -,.. --􀁾􀀠-: 15 ---c---,.. --------,--,.. -: ---...:: 20 ...: c-f--,.. --,.. : : -,.. -f-,.. : -,.. -,.. -25 -,.. SAMPLER TYPE GROUND WATER OEPTH BORING METHOD SS DRIVEN SPLIT
SPOON VAT COMPLETION DRY FT. H$A -HOLLOW STEM AUGERS ST PREsseD SHELBY TUSE , AFTER HR5_ FT, CFA CONTINUOUS FLIGHT AUGEAS T FI nr: _ nCI\""'r.. 􀁲􀀢􀀧􀁾􀁉􀁎􀁲􀀮􀀠
􀁾􀀠􀁾􀀮􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁾􀀮􀁾􀀢􀁾􀁾􀀢􀁾􀀮􀀠 ATEe Associates, Inc. RECORD OF 􀁾􀁗􀀠11310Newkirk
Street"'''''1 SUBSURFACE EXPLORATIONDallas. Texas 75229 (214) 243-8931 B-7Clien\' Ayj a]] SOflflQ • _...;;::.,,-:.=:-;-;;-;:-__ JOb. ____􀁾􀀲􀁾􀀵􀁾􀀭􀁾􀀰􀁾􀀰􀀴􀁾􀀸􀁾􀀳􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀂭Arc:
hilecl Engineer 􀀽􀁾􀀬􀀬􀀭􀀢􀀧􀀧􀀧􀀧􀀧􀀽􀀽􀀧􀀧􀀧􀀧􀀻􀁖􀀻􀀧􀀧􀀧􀀧􀀧􀀧􀀽􀀢􀀧􀀧􀀽􀀽􀀽􀀽􀀬􀀬􀀭􀀭􀀭􀂭P'oi,e' N,m. Phase I HYDROGEOLOGI C INVESTIGATION Orawn By 􀁟􀁾􀁄􀀢􀀧􀁐􀁣􀀧􀁚􀀽􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭Proi
ecl Loc:ationAddison" Texas ApproW!d 6y ..:G"'D'-______________ DRILLING .and SAMPLiNG INfORMATION 'fEST OATA Oale Slanect HammerWt" 1?I?IPo 7 SAMPLER TYPE BORING METHOD ss DRiVEN SPUT
SPOON HSA -HOLLOW STEM AUGERS ST PRESsED SHElSY Tuee ,. AFTER HRS FT eFA CONTINUOUS fLIGHT AUGEFtS Cll CONTINUOUS FLIGHT AUGER DC 􀁮􀁾􀁉􀁖􀁉􀁎􀀨􀀻􀀠CASING Ibs" Oare Compleled 12i2L87
Hammer Orop in. Orilt Foreman P.K. Spoon Sampler 00 in. Geo!oSlSt C.R. Rock Core Oia. in. BOting Mell"lod H/S/A Shelby Tube 00 3.0 in. w a. >-.. SOIL CLASSIFICATION : ::E"T w W >c-Zw
􀁾􀀠􀁾􀀠< .. 􀀮􀀮􀁾􀀠0. ... ! ",0. a.< ::; 1::;SuRfACE ELEVATION >-w wU <0 " ",0 0", '" Z '" --Dark brown to tan CLAY (CH) 1 1 ST: -W/Limestone fragments --= nST-4.0'1 -Dark brown CLAY
(CH) 5.0' i =3ST : 5 : Light brown SILTY CLAY (CL) . .. --7:0 ; 4 CT --Tan to gray weathered LIHESTONE --Bottom of test: boring @B. 0 ' ---Auger refusal @8.0' 10 ..: ---: = ----::: ---15
..:---: : -= -----:--20 ---: ------: : : --􀁾􀀠:>: p.. p.." 􀁾􀀠C BORING AND0 􀁾􀀭E _0 00 SAMPLING NOTES 0: 􀁾􀀠00 c: "' u E--r! >-.. 􀁾􀀠c 􀀲􀁾􀀠-0 􀁾􀀠o --"cca: 0' '" w .• v ca <II"
0 􀁾􀁓􀀠0" "':0 1': "'''' a.. " "' c: 3: " -c 0 􀁾􀀲􀀠"'.􀁏􀁾􀀠<..Ia. :.;;c: 􀁾􀁾􀀵􀁴􀁦􀁃􀀠"'I" " 501 10 ---80 170 -00 􀁾􀁏􀀠: -::: 00 tlo : r t----------t: ---I--: -: r--i -GROUND WATER
DEPTH 9 AT COMPLETION DRY FT. _ 
AlEe Associates, Inc. RECORD OFV 11310 Newkirk Street 􀁾􀀢􀁦􀀧􀀱􀀠Dallas. Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 : Client _-'A"I...lT,..,A..Il..I'-______________________ Bctlng.
B 8 Joo' 25-0Q483Arct'litcct Engineer .:-=--::--::---------------,---Drawn By __DL.lP=Z_________􀁾􀀮p,aj,C< "'me PHASE I HYDROGEOLOGIC INVESTIGATION Approved By 􀁟􀁇􀁬􀁩􀁊􀀮􀁬􀁄􀁾______________Prore:
CI Locallon Addison. Texas DRILLING and SAMPLING INFORMATION TEST DATA Date Starred T T "4/87 Hammer WI lb. GROUNQ WATER DEPTH eORING METHOD SS V AT COMPLETION DRY HSA -HOLLOW STeM AUGERS
ST , AFTER HAS CFA CONTINUOUS FliGHT AUGERS CA OC -DRIVING CASING Oafe Completea II L2WJ.Z Hammer Drop in" Drill Foreman f.IL Spoon Sampler 00 in. Geo1oiJ,st C.R 􀁾􀁯􀁣􀁫􀀠Core Ola ;n
Bonng Method H/SLA Sl'1elby r',Jbe 00 3.Q in_ w Q.,. >-SOIL CLASSIFICATION ::; 2:1: UI w :l:w -' -' 0->--' Q. Q. <..<: ::; . ::;c:G. SUiiF;,CE E::..E'JATION "'w wu ,,0 <:"a au) v:.Z
U) -Mottled dark brown and gray -! -CLAY (CH) W/liUleston fragments -1 S-13.0' bST --Dark brown to browl), CLAY (CH) 􀁾􀀮􀀵􀀧􀀠!iLight brown c -1 3 :sr SILTY CLAY (eL) =1, -1.0 I . _
4 CT -j ! -Tan to gray weathered LIHESTONE ---Bot tom of test boring @B.O' ---Auger refusal @8.0' 10 -'-------------: --15""'::--------.....::--------20""'::-= I -J ------: -li: p.,
•" f:; BORING AND 0 􀁾􀁯􀀠::!E SAMPLING NOTES'" 􀁾􀀠00E-.,.;w u o e>-􀁾􀀠" co =. "0 􀁾􀀠-c: c.c 0' .., w .-u Cg '":> 0 􀁾􀁣􀀠l'S '"0 z ?.; -cU " 3:0 00 :::>w 0 0:' ::.t_c: 􀁾􀁅􀀠;U zc:
-,i' 0 -, I-10 35 --10 70 -10 75 ---10 30 --􀁾􀀠--I-----I-----I-I-----I-I-I-I-SAMPLER Type DRIVEN SPLIT SPOON PRESSED SHEL8Y TUBE CONTINUOUS FliGHT AUGER 
AlEeW Associates, Inc. RECORD OF 1.1310 Newkirk Street 􀀢􀁾􀀮􀀱􀀠Dallas. Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 e';en, __-'A:!.V!.l!:.AL!!!::!:L'-___________________ 80.ing'
_--'Il!l;-::9L_____________ Atctdtecl Engineer _________________________ Job' __--'2c.5c:-"'0"'0"'4"'-8"'-3__􀁾___􀁾􀀠􀁄􀁾􀁷􀁮􀁥􀁹􀁟􀁾􀁄􀁌􀁐􀁾􀁚􀁾____________P.Ojec! N.m, PHASE 1 HYDROGEOLOGIC
INVESTIGATION Project location Addison, Texas ApprOved By _"G"'D'-_______ oAn.tlNG and SAMPLING INFORMATION TEST DATA Dare StatTed II/24/H7 􀁈􀁡􀁭􀁭􀁾􀀨􀁗􀁴􀀠'b. Oate Completed 1 I 124/87
HafYImer Drop in. Onll Foreman P.K. Spoon Sampler 00 in Geologist C.R. ROCk Core Dia in, EOrlng MelhoO H/S/A Shelby Tube 00 3.0 ,n ::!SOIL CLASSIFICATION i?:t :t:w I < ... 􀀮􀀮􀀮􀁾􀀠a;C.
ll.< SURFACE ELeVATION ... ", Wl) ,"0 0", -Dark brown CLAY(CH) and ---: brown SANDY CLAY(CL) -----4.0' --j , 􀁾Dark brown CLAY (CH) 5.0' 􀁾􀀠5 Light brown SILTY CLAY (CL) --7.0' : 􀁾􀀠Tan
to gray weathered LUIESTONE --l --Bottom of test boring @8.0' ---Auger refusal @8.0' 10":: --: : -..::-: -----15"::-: ---:-------: ----: 20--:------. ---! w c. >... w w 􀁾􀀠􀁾􀀠c. "􀁾􀁯􀀠:l'
<u>Z '" 1 CU 2 leu 3 ST 4' CT 􀁾􀀠:.: "'" "'". 􀁾􀀠C BORING ANO• 01)E So r:: SAMPLING NOTESa; 0 00 ....U E-w 0· ..,> ... 􀁾􀀠c 􀁩􀁾􀀠'"a: 􀁾􀀠u'􀁣􀁾􀀠'"w -0 c"> D "'c ocr; 0 Z 􀁕􀁬􀁾􀀠􀁮􀀮􀁾􀀠I􀁾􀁩"
:l 3:. -c 􀁾􀂣􀀡􀀠I w 0 0:: \..Ie.'" " 􀁅􀁴􀀺􀁾􀁯, ;f. ,,, I-10 I-l-II-IS III95 95 f-III90 75 l-IIIIIf-II-l-IIIIf-II􀁾􀀠IIIIf-If-IIIIf-II:I ;--SAMPLER TYPE GROUND WATER DEPTH eORING
METHOD 55 ORlVeN SPLIT SPOON V AT COMPLETION DRY HSA -HOllOW STEM AUGERS ST PRESSED SHELBY Tuae CFA CONTINUOUS FLIGHT AUGERS f' AFTER HAS CA CONTINUOUS fLIGHT AUGER DC -DRIVING CASING

AlEeT Associates, Inc. RECORD OF 11310 Newkirk Street 􀁾􀁔􀁉􀀠Dallas. Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 CI;en! __-'A"-V:!,.I"'A"'L"'-"L'-___________________ An;nIH!:CI
Engineer ______________________ P'Olect Name PHASE I HYDRQGEOLOGIC INVESTIGATION PrOIe.ct location Addison. Texas Bonng " ___􀁂􀁾􀀭􀁊􀀮􀁬􀁾􀁏􀀧􀀻􀀻􀀭􀀻􀀭􀀻􀀻􀀺􀀺􀀭_________ Job' 25-00483
Drawn By DPZ .__.._-Approved By -"C;"'D'---___􀁾􀁟􀀠DRILLING and SAMPLING INFORMATION OateStatt.d 11-24-87 Hammel WI. ______ Ib' reST DATA Dale Completed 11-24-87 Hammef DlOP ______
On!! Foreman P.K. Spoon Sampler 00 ____ ,n . c 80RINGANDGeologist CR. ¢) t􀁾􀀠c; g SAMPLING NOTES 􀁾􀀠0: E60tll'lg Me(hod H /sI A Sheroy Tube 00 􀁟􀁾􀀳􀁊􀀮􀀧􀀧􀀭􀀧􀀰􀀬􀀬􀀭􀁟􀀠,n 􀁾􀀠t-,I;I:
oe 􀁾􀀠,... III( 0'-':::t':I r------------------r-:::--r--,----i;:: a: 3: .S 􀁾􀀠g 5::; I I--:;' 0 lIP C c.o '" SOIL CLASSIFICATION 1i 2... ... bJ 􀁾􀀠􀁾􀀠􀁾􀀠v,;; 􀀺􀀺􀁾'.----.....
􀀻􀀮􀀺􀁾􀀠􀁾􀀠i 􀁾􀀠.... 3:CI 􀁾􀁯f-------------------j 􀁾t I􀁾0. < =t c:; 0 0:: tl-;:, SURFACS ELEVATION :;; 􀁾􀀠t:) ii 􀁾􀀠􀁾􀀠􀁾􀀠<1 a a:=§&;,.O,,-"'-t--T'_________--:--_ 􀁾􀀠I 􀁾-37
r :::::: 1 1 􀁾􀀠5 J31sT 60 10 rff" r H -10 I I--r -r --r ..::. 􀁾􀀠􀁾􀀠-r: -r --r -􀀱􀀵􀁾􀀠􀁾--r--r--r: -r -f-• i -􀁾􀀠--r: : r20_ f-:r r-: r !---􀁾􀀠􀁾􀀠Dark brown CLAY(CH) and brown
I 􀁾􀀠SAL'lDY CL_A_Y_(_C_L)_______+3_.0....,....;1 Dark brown CLAY (CH) 14.5t I ..J 􀁾􀀠Light brown laminated SILTY : ...I 􀁾􀀠-CLAY (CL) Tan to gray weathered J Bottom of test boring
LIMESTONE Auger refusal @8.0' @8,0' '.0' --'-_____________-1-_.....:....!􀁟􀀭􀀭􀁌􀁾􀁟􀁌􀀮􀀮􀀧-L.....:....I-1-___L--1-____...􀁾􀀠SAMPLER TYPE GROUND WATER DEPTH BORING METHOD OFuvEN SPLfT
SPOON 9 AT COMPLETION DRY FT. HSA HOLLOW STeM AUGERS ST PAESSEO SHELBY TUBe CFA CONTINUOUS FLIGHT AUGERS , AFTER HRS" FT CONTINUOUS FLIGHT AUGER DC DRIVING CASING CA ........... v ........
01:: • WATER ON RODS NONE FT. 55 
---ATEe Associates, Inc. RECORD OF 􀁾11310 Newkirk Street 􀁜􀀢􀁔􀁾􀀠Dallas. Texas 75229 SUBSURFACE EXPLORATION (214) 243-8931 Chent AVIP;LL AtchlTeCI 􀁥􀁮􀁧􀁩􀁮􀁾􀁲􀀠___􀁾􀁾􀁾___________
P,oje" Name PHASE I HYDROGEOLOGIC INVESTIGATTON ProjeCll.ocation Add ison.. Texas DRILLING and SAMPLING INFORMATION Date 􀁓􀁲􀁡􀁲􀁴􀁾􀁈􀁊􀀠11-2/i 87 Ollie Comp1eled 11-24-87 P. K. GeOlogist
__􀀮􀀮􀀮􀀮􀀻􀀭􀁃􀀮􀁒􀁾􀀠Bori1'lg Method H/S!A_ SOIL CLASSIF SURFACE El Dark 􀁢􀁲􀁯􀁷􀁾􀀠CLAY ( CLAY (eL) Dark 􀁢􀁲􀁯􀀮􀁾􀀠to bra W/calcareous nod Light 􀁢􀁲􀁯􀀮􀁾􀀠SILTY Tan to gray
weath Bottom of test bo Auger refusal @8 SAMPlER TYPE' ORtVEN SPLIT SPOON ST PRESSED SHELBY rUBE CA CONTINUOUS FLIGHT AUGER RC ROCK CORE HammerW! lb. Hammer Drop in. Spoo" Sampler 00
on _____ Roek Cote Ola w ____ ;n Shelby Tube 00 3.0 In r1r IICATION rw 􀀬􀀬􀁾􀀠... 􀁾􀀠I E:t 0.< EV'::"TlON "'''• 􀁾􀁾􀀠c ! "'" 􀁾􀀠l':! p. ""• 􀁾􀀠BORING ANDE 0 EQ 00E SAMPLING NOTESt:
0 00 C w ;; E.,., 02 -0w ,. ... 􀁾􀀠c " n0􀁾􀀠0",. 0: c < o , ... w -0 ca .. > 0 􀁾􀀵􀀠o· ..:w w w 0 Z (1;0.0 0.';;; 􀁾􀀠􀁾􀀠U " 3:" 􀁾􀁾􀀠::>C-o. w 􀁾􀁏􀀠l '" 0 S? .. 56. 5'!" i c:
"'z '" " " c:':-oc..O CH) and Wl1 CLAY 1.11es SAl'mY 1"1'8'" 10' I 􀁾􀁓􀁔(CH) -. . ..-C-5 f-if-f-40 35 ICLAY ered ring .0' (CL) LUfESTONE @8.0' Irr 30 95 f-i7.0' l-I 4 e1 25 25 i-li-l-f-IlL:
􀁾􀀠-i-I-i-I-f--I-i-I-is..: I􀁾--I-􀁾􀀠----I-I2ac.:: l-f--I-I-I-I--I-I-I-IGROUND WAT€R DEPTH BORING METHOD 9 AT COMPLE nON DRY FT HSA HOLLOW STEM AUGEAS " AFTER HAS FT CFA CONTINUOUS
HIGHT AuGERS • WATER ON Roes NONE FT DC QRIVtNG CASING 􀀬􀀬􀁾􀀠................. .􀁾􀀮􀀭Boring 􀁾􀀠__􀁾􀁂􀁾􀀭􀁾􀁊􀁾􀀱􀀭􀀻􀀻􀀻􀀭􀀻􀀻􀀺􀀺􀀭__________ JOb. ___􀁾􀀲􀁾􀀵􀁾􀀭􀁾􀁏􀁕􀁕􀀰􀀴􀁾􀁾􀀸􀁾􀀳􀁫􀀭_____
______ Drawn By DP? ApprOye(l By ---CD.-______________ TEST DATA l-I55 
ATEeW Associates, Inc. 11310 Newkirk Street RECORD OF ""VI Dallas. Texas 75229 SUBSURFACE EXPLORATION (214) 243-893t CO'.n< __A=Vc:I::A::;:L::;:Lc.....___________________ ArchlleC! EnglneeI
􀀮􀀭􀀻􀀭􀀻􀀻􀀺􀀭􀀻􀀺􀀺􀀭􀁾􀀽􀀽􀀽􀀽􀀽􀀽􀀽􀀭􀀢􀀢􀀷􀀮􀀽􀀽􀀽􀀽􀀽􀀽􀀺􀁟􀀭􀀭􀀭P'Oj.ctN,me PHASE I HYDROGEOLOGIC r1>VESTIGATION 􀁁􀀽􀁤􀀽􀁤􀀽􀁩􀀽􀁳􀀽􀁯􀀺􀀺􀀮􀀺􀁮􀁾􀀮􀁾􀁔􀀽􀁥􀀺􀀺􀀮􀀺􀁸􀀽􀁡􀀽􀁳􀁾______________
_Prorect Locallon 􀀺􀀮􀀺ORILUNG anc SAMPLING INFOM:MATION 11-24-87DalE! Siarleo hammer WI Ib' 11-24-87 DalE! COmplelfl'O Hammer Drop In P.K.Dnll ForE!'!'.an Spoon S2:-r::>!e. 00 on Genlcg,:;!
Kocl<. Core I),a mC.R. -" H/S/A 3.0Bonng Me:l\m: 􀁓􀀬􀁾􀀬􀁥􀁬􀁾􀀱􀀠􀁔􀁵􀁾􀀢􀀠00 ;" 􀁾􀀠8or,ng " _".__􀀭􀀬􀁂􀀧􀀭􀀭􀁣􀀧􀁬􀀬􀀭􀀬􀀲􀀬􀀭􀀺􀀭􀀭􀀬􀀭􀀺􀀭􀁾􀀠Job' __-;:.25:=,-:-'0,,0"'4"'8"'3____
Drawn 8y _--':D.;.P-"Z_______ ApptoYec S,. -"G'-'Dc_____________􀁾__,__ TEST D.:..7;. 􀁾􀀠E Eca:: 􀁾􀀠􀁾􀀺􀀺􀀺􀀮􀀠w U i-; 􀁾􀁾􀁉􀀡􀀡􀁩􀁾􀁾􀀠w C 2 􀀢􀀮􀁾􀀠:: 􀁾􀀠􀁾􀀠0 :; 􀁾􀁾􀀠';:,'2
c:::.. ::;..U" "'<0 ::E j:': H;?! z BORING P.ND S'!'!JPLlNG NOTES 􀁾􀁯􀀺􀀺􀀠Ol.l;! 􀁾􀁚􀀠;?: <f! ;0; 􀁾􀁅􀀮􀀲􀁾􀀵􀀠􀀭􀁾􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁾􀀧􀁾􀁾􀁉􀁾􀁾􀁾􀁾􀁾􀁉􀁾􀁾􀁉􀁾􀀠􀁾􀁾􀁉􀀭􀀭
􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁾I SOIL CLASSIFICATION' tI 􀁾􀀢􀀧􀀺􀀺􀀺􀀺􀀺􀀻􀀧􀀺􀀺􀀧􀁾􀁅􀁾􀁟􀀺􀀺􀀮􀀧􀀺􀀧􀀷􀀬􀁏􀀼􀀮􀀮􀀠2:r z:w ::: <;1-1-...1 C. Dark hrO\,n CLAY (CH) W/limestone rngOlents -02.0' Dark
bro\olTl CLAY (CH) W/calcareous nodules 4.5' ,\------------+-.:..::..=.-1 '"J Light broIN'll SILT':: CLAY (CL) 􀁾􀀠'"J Tan to gray weathered LH1ESTO:->E 􀁾􀀠Bottom of test boring @8.0'-i
Auger refusal @S.O' 1 7 .0' I 10 I 15 20 -1 I 􀁾􀀠.... -j 1 STI5 29 t -D 'II32 I r-ISTI 5°i 5 􀁾31 STrOO: 115n' J I 4 CT1U 00 i 50 1 jJ I i SA.MPLER TYPE GROUND WATER DEPTH SORING METHOD
ss ORIVEN SPLIT SPOON fJ AT COMPLETION DRY FT HSA -HOll.OW STEM AuGERS ST PRESSED SHELBY TUBE CFA CONTINUOUS FlIGHi AuGERS, AFTER HRS, FT CA CONTINUOUS FLIGHT AUGER: DC -DRIVING CASING•
WATER N RODS NONE n 
ATTACHMENT 15 Summary table of all soil, groundwater, surface water, and vapor analytical results, including from all sampling points, and tank removal or repair activities 
TABLE 2 LABORATORY CHEMICAL ANALYSIS SUBSURFACE SOIL SAMPLES ATEC Project No. 25-00483 Total P-HC Concentration BoriogNo. (reported in ug!g (ppm)) B-1 2530 B-2 10000 B-3 1120 B-4 1250
B-5 1490 B-6 377 B-7 994 B-8 1450 B-9 269 B-10 1390 B-11 1060 1340 
TABLE J SOIL SAMPLE ANALYflCAL RESULTS ji,I '" _ Soil samples obtainedon 􀁾􀁥􀁷􀁮􀁵􀁥􀁲􀀠i2 􀁡􀁾􀁈􀁊􀀠13, 􀀡􀁾􀀭􀀭􀀭􀀭􀀭􀀭􀁾􀀭􀀮􀁊􀀺􀀠= 􀀢􀀧􀀬􀁅􀁴􀁨􀁹􀁬􀁾􀀧􀀮􀀻􀀠 BTTEo!llXI 􀁐􀀩􀁈􀀮􀀧􀀮􀀧􀂷􀀮􀀢􀀧􀁾�
�Sample Benzene Toluene, 􀁯􀁯􀁩􀁨􀁥􀁾􀁥􀀠' 'Xylcll..::! -. ' 􀀭􀁾􀀭􀀭􀁾􀀭􀀭􀀱􀀭􀀭􀀭􀀭􀀭􀀭􀀭􀁲􀀭􀀧􀀭􀁾􀀭􀀫􀀭􀀭􀀭􀀭􀁾􀁾􀀭􀀧􀁾􀀠Backgrounu 142 229 80 89'J 1,348 49 I 􀁾􀀺􀁾􀀻􀀬􀁃􀁬􀀠􀀭􀁾􀁥􀀭5.::'
􀁾􀀺􀀠􀀭􀁾􀀺􀀠23.::: -".7: II TH-Fill-2 27,480 3,138 1,185 _ 􀀲􀀹􀀮􀁝􀀲􀁾􀁾􀀬􀀹􀀲􀀹􀀠I 12,378 I' : BTEX rew", h!<:d in I'g/kg (pom 􀁲􀁾􀁲􀀠hiJlion; I'pb) wilh a mdhxJ acrc""," I;ll,i:
(,f 50 􀁾􀁧􀀯􀁫􀁧􀀠(ppb). TPH rc;ulis li.qed in ms/kg (parts pcr million; ppm) "'th a 􀀬􀀢􀁾􀀮􀁉􀁨􀁻􀀡􀁤􀀠􀁤􀁥􀁴􀁾􀀼􀁴􀀧􀁶􀁲􀀮􀀠lim,! of 10 rug/kg (ppm). I I: 􀁁􀁯􀁾􀁬􀁹􀀵􀁾􀀻􀀠"ere
cOnd"dco 􀁵􀀵􀁩􀁾􀁧􀀠EPA McthodStn.o _(13TEX) 􀁾􀁾􀁤􀀠EPA Moth,x! 􀁾􀀠􀀺􀁾􀁊􀀮􀀠(TPH), _ _ .J Per the Texa, \Vater Commission requi,el]lem to tre-al tile un 􀁾􀁩􀀻􀀨􀀧􀀠hydrocarbon-affected
fiil Ill:tteriais. CeRA is 􀁾􀁬􀁜􀁜􀂷􀁡􀁪􀁬􀁬􀁬􀁬􀁧􀀠􀁡􀁵􀁴􀁨􀁯􀁲􀁩􀁾􀁬􀁩􀁯􀁯􀁮􀀠fftJJIj 􀁃􀁕􀁲􀁩􀁬􀁬􀀧􀀡􀁾􀁨􀀩􀁮􀁣􀀠fijcls Inc., to dcvc10p 􀁾􀁈􀁾􀁩􀁊􀀠submit a R<:l11cuial i\ctioll
Pia:! (BiG-remediation). CURA 􀁡􀁰􀁰􀁲􀁴􀀮􀁾􀁣􀁩􀀻􀀺􀁴􀁾􀁳􀀠th.:: oPPOrtunity 10 pr(,vfdc you 􀀻􀁤􀀱􀀡􀁾􀀠GUf 􀁰􀀡􀀬􀀩􀁦􀁾􀀢􀁾􀀺􀁾􀁩􀁜􀀢􀁬􀁦􀀧􀀻􀁡􀁾􀀠􀁣􀁯􀁮􀁳􀁵􀀱􀁴􀁬􀁊􀁾􀁧􀀠􀁳􀁥􀁦􀁶􀁩􀁃􀀧􀁾􀁳􀀮􀀠If
you have any qutstions concerning tilis project or ii CUR/\ C;,11 b<.' of fonher sa','icc, please do no: 􀁨􀁾􀁳􀁩􀁴􀁡􀁬􀁣􀀠to ('OIllact \is, Respectfully, CURA, [nco 􀀯􀁾􀀠 . /.i .;/J􀁾􀀮􀁉􀂷􀁬􀀺􀁊􀁾
􀀭􀀮􀁉􀀠Claude A fl,llwn Section Leader/Geologist CABftih cc: Mr. EdwurJ Morales -Ad<.E:;(ln Airpl'rt tvjr. Mike Delancy -TWC 􀁄􀁩􀀧􀀮􀁬􀁲􀀻􀀧􀁾􀁬􀀠􀁾􀀠Offill! 
TABLE I SOIL SAMPLING RESULTS Sample Date 9-5-96 Results are reported in milligrams per kilogram (mglkg) I Sample Location·' '. Detection Limit B-1 (35-5') B-1 (5-6') B-2 (4.5-5') 8-2
(5.5-6.75') 8-3 0-3') E-3 (4-5') 8-3 (5-65') B-4 (3-4') B-4 (5-55') B-5 (2-3') B-5 (6-65') B-6 (3.5-5') B-6 (6-675') B-7 (3-4') B-8 (2.5-35') B-9 (2.5-3.5') B-9 (4-45') .' Ethyl-Tpta[
genzene Toluene benzene Xylenes· BTEX.· 0.002 0.002 0.002 0.002 0.002 15.0 l\'D 85.5 209.0 309.5 14.7 ND 42.7 50.5 107.9 8.05 ND 35.2 11.2 54.45 .024 ND .084 .044 .154 .633 104 .518
3.85 6.04 ND ND l\'D 5.09 5.09 1.07 .778 ! ND 1.27 3.11 ND ND l'.'D 5.44 5.44 ND ND ND .01 .01 ND ND .077 .679 .756 ND ND ND .065 .065 ND ND .011 i .274 .286 ND ND ND l\'D ND ND NO .435
4.23 4.66 .083 l\'D .214 2.7 2.99 ND ND .142 2.07 2.21 ND ND .295 2.73 ).02 TPH 10 11,566 6,640 ! 3,160 3,990 16,960 24,300 32,900 3640 ND 1,900 300 1,300 30 2,700 3,360 5,000 i 1,866
II ND -None Detected 
TABLE 2 SOIL SAMPLING RESULTS Sample Date 3-14-97 Results are reponed in milligrams per kilogram (mg/kg) Sample.Location Detection Limit B-IO (2-4') B·IO (5-5.5') B·II (2·4') B·Il (4·4.5')
B-12 (2·4') B·12 (5·6') B-13 (3-4') B·l) (4-5') B-14 (4·6') B-\4 (6-6.5') . B·15 (4-6') B·IS (6-6.75') . B·16 (1-1.5') B-17 (1-2.25') B-18 (1·3.5') B-19 (1-3') B-20 (2-4') B-10 (4-4.75')
B·21 (1-2.5') B-22 (1-2') B-23 (1-3') B-24 (1-2.15') B-25 (1-3.5') B-26 (2-4') B-26 (4-6') B-27 (1-3') B-28 (2-4.5') B·29 (2-3.5') Ethyl-Total Benzene Tolu""e benzene Xylenes BTEX 0.002
0.002 0.002 0.002 0.002 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO ND NO NO NO NO ND i ND NO NO NO NO 1\'1) ND NO 1\1]) NU 1\1]) NO NO NO NO NO NO NO NO 1><'0 },1])
NO NO NO 0.10 0.60 1.34 2.04 0.36 0.72 0.81 4.79 6.68 0.13 0.09 1.04 2.34 3,6 NO NO 1'<'0 NO NO NO NO 0.70 1.78 2.48 NO ND ND },'O NO NO NO NO NO NO NO NO l\'O NO NO NO NO NO NO NO NO
NO NO NO NO NO NO ND 1.53 ),53 NO NO NO NO NO NO NO NO NO NO NO NO NO 2.92 2.92 NO NO NO 1.51 1.51 NO NO NO NO NO NO NO NU NO NO NO NO NO NO NO TPH 10 NO NO NO NO NO 58 1\'1) NO i 477
97 i 303 819 1279 32 NO NO i NO NO NO i NO 419 NO i NO 149 46 i 20 NO NO 
ATTACHMENT 16 Summary tables of all gauging data, water level data, NAPL thickness and corrected water level data and well screen interval (if applicable) NfA 
TABLE 1 suvr'lARY OF RELATIVE GRCUND WATER LE.VEL ELEVATICl'lS AND PROcu:::r THICKNESS ME/lSUREMENl'S M.:lnitor well Number 􀀢􀁾􀀭􀀱􀀠/1,-1-2 􀁾􀀭􀀳􀀠􀁾􀀭􀀴􀀠􀁾􀀭􀀵􀀠Top of Rise Elevation,
97.00 96.78 96.77 96.91 96.99 feet 6/2/87 Relative Ground Water Elevation, Feet N/A N/A N/A N/A N/A Product Thickness 􀀢􀁾􀁡􀁳􀁵􀁲􀁥􀁭􀁥􀁮􀁴􀁦􀀠feet None None None None None Note: Reference
Elevation 100.00 is taken to be the top of the fire hydrant north of the fuel farm facility. * True ground water elevations could not be determined due to surface water infiltration.

ATTACHMENT 17 Copies of all analytical reports including complete chain-of-custody and quality assurance/quality control documentation 
INC.==========--._._____ 􀀢􀁾􀀠____􀁾􀁟􀀢􀀠__ 􀀲􀁾􀁾􀀠􀀺􀁙􀀻􀁳􀁲􀁾􀁦􀁾􀀻􀁾􀁟􀁾􀁾􀁾􀁦􀀺􀁾􀀠􀀮􀁓􀁤􀁬􀁾􀀠􀁴􀀱􀀰􀀰􀀢􀀮􀁾􀀮􀀠Dl!!.as. 􀁔􀁾􀀩􀀻􀁾􀁾􀀠􀀷􀁾􀀿􀀲􀀹􀀠• 􀁬􀁾􀀱􀁾􀁾􀁾􀁾􀁾􀀮􀀡􀀡􀀡􀁟􀀮􀁾􀁟􀁾􀁾􀁟􀀶􀁟
􀀲􀀰􀁟􀀭􀁡􀁾􀁾􀀠CEl INC. lab Report No:91-1268-02 Date Reported: 12117191 Cli(lnt: Cure. Inc. Dale Rece!ved:12113191 'PlOject Number:32-91701.1 Vola riles 􀁆􀁸􀁬􀁦􀁾􀁃􀀡􀁩􀁯􀁮􀀠Date:
12116191 Sample Idontification:TH-FiLL-l Volatiles Analysis Date: 12116191 Sample Type: Soil TPH Ext!action Date:12i17191 Depth Interval;NA ,[PH Analysis Date:12117191 Ana!y1ical ..
.., .. , ,10 .... ... Results .. Ii • f • " • " 􀁾􀀠Delection Limit Benzene 265 un/kg \"pptlj 50 uglkg (ppb) Toluene 5.087 ug1kg (Ppb) 50 ugtk9 (ppb) Ethylbenzene -700 ugH,,; Ipph) 50
ug/kg (ppb) Xylenes 17.810 􀁵􀁧􀁦􀁾􀁧􀀠(plOb) 50 ugtkg (ppb) Total BTEX(calculated)-23.862 ugikg (ppb) 50 ugtkg (ppb) ·TPH 13,753 mg/k\j (ppm) 10 rng/Kg (ppm) •(TOlal Petroleum HydrocarbOn::;)
Ignitability -NIA degrees fahrenheit Method: BTEX -EPA MethOd 802015030; Voaltile Voaltile Extraction: EPA Mettlod 3550: TPH -EPA Method 418.11 Extraction 3550 tgnilabthty -EPA Method
1010 pel 5'1'.'-846 Gwtlelines. /_;t /i)􀀮􀁐􀁾􀀮􀁟􀁾􀀮􀁟􀀮􀀮􀀠. . ___􀁩􀁾􀁴􀀺􀀮􀀮􀁉􀁁􀀩􀁾􀁦􀀮􀁾􀁖􀁟􀀠 Steven A. Hensen Xlang-Yong 􀁃􀁾􀀠I Director of Technical Services Environmemai
Chemist 􀁍􀁬􀁩􀁬􀁴􀁁􀁾􀁏CAt lAS HCUS1'GN 
.. INC. 2209 􀁜􀀧􀀬􀁧􀀻􀀩􀁮􀁾􀁩􀁲􀀮􀀠SIreK Suil/400 • Danas. lilxas 75223 • 21,,'62(}/1l1 • 􀁆􀁁􀁁􀀦􀀲􀁩􀁊􀀮􀁾􀀲􀀱􀀹􀁾􀁾􀁾􀁾􀀡􀀡􀀮􀀮􀀮􀀮􀀭􀀮􀀭..􀁾􀀭􀀮􀀭􀀭􀀭􀀮􀀭􀀮􀀭. ---􀀭􀀭􀀮􀁾􀀭------.-_..
􀀧􀀭􀁾􀀭􀀭􀀮􀀭-_.--eEL INC. lab Report No:91-1268-0:l Dale Reponco:12/17191 Client: Cura, Inc. Date Raceive1:12113/91 Project Number:32-91701.1 Volatiles Extraction Date:12116/91 Sample
Identification:TH-F:Ll-2 Volatiles Analysis Dato: 12116191 Sample Type: Soil TPH EXU3ction Date:12/17191 Depth In!erval:NA 'rPH Analysis Date:I2117/91 ......... ,. .. " • Results"" 'II
..... $ 􀁾􀀠Analytical Detection Limit Benzene 27,480 uglkg (ppb) 50 uglkg (ppb) Toluene 3.138 􀁵􀁧􀁬􀁾􀁧􀀠(ppb) 50 uglkg (ppb) Elhylbenzilne 1.185 ug1kg (ppb) 50 uglkg (ppb) Xylenes
29.126 Uglkg (ppb) 50 ugli<g (ppb) TotaI8TEX(calculated)60,929 uglkg (pptl) 50 uglkg (ppb) 'TPH 12,378 􀁲􀀮􀀱􀁧􀀡􀁾􀀮􀁧􀀠(ppmj 10 mglY.g (ppm) '(Total Petroleum Hydroca,bonsj Ignitability
-N/A degrees falHenl1eit Method: 8T"X -EPA Method 8020/5030; Voaltilll Extraction: EPA MeU,ed 3550: TPH -EPA Method 418.11 "'''traction 3550 Ignitabilily -"PA Method 1010 per SW-846
Guidelines. .,jJ"", 􀀧􀁾􀀠.£1l:-".. Jr'l:Y-.....I.':.-.diify;l 􀁓􀀡􀁥􀁶􀁥􀁾􀀭􀁁􀀮􀀠Hensen--._----6.1Xiang-Yong i I Director of Technical Services Environment I Chemi I nAt1 At: 
INC. .' 2209 Wisco",';; SI1W. Suiie 􀀧􀁾􀁊􀀠• Dal;as. 'ms 75229 • 2141620}117 • fAX620·B219==',===-=-==--.._-.._----_._ ... _-_...-.. --.--..-'-----._--_._-._---_._._-CEL INC. lab Report
No:91-1268-01 Date Roported: 12/16191 Client: Cura. Inc. Date Receivecl:12/13!91 Project Number:32-91701.1 Volatiles Extraction Date: 12/16/91 Sample Iden(ification:TH-W-C Voiati!es
Analysis Date: 12116/91 Sample Type: Soi! ,PH Extraction Dale:I2116191 Depth rnterval:t,A TPH Analysis Da,o: 12116/91 AnalYlical ........... flo·. Results • 􀁾􀀠< ,.. ,. '" 􀁾􀀠􀁾􀀠
De!ection Limit Benzene < 50 uglkg (ppb) 50 uglkg (pPb) Toluene 296 ulJ/kg (pPb) 50 ugikg (ppb) Elhylbenzene -< 50 ug/kg (ppb) 50 ugiKg (ppb) Xylenes 259 uglkg (ppb) 50 uglkg (ppb) Tota!
BTEX(cll!culated)-555 ugikg (pp!::) 50 u9/;':9 (ppb) 'TPH 28 rr.gikg (ppm) 10 mg/kg (ppm) '(Total Petroleum Hydrocarbons) Ignitability -NIA degrees fahronheit Method: BTEX -EPA MeUlOd
8020/5030: Voal!!le EXifaction: EPA Method 3550: TPH -EPA MelhOd41S.11 Extraction 3550 Ignitability --EPA Method 1010 per SW-846 Guidelines. 􀁤􀁾􀁾􀀺􀁾􀁟􀀨􀁽􀁊􀁟􀀠-:Y-.":tr: . :t.:.',,'f"
y Steven A. Hensen Xiang...l%ng eni Director of Technical Services Environmenta! Chemist MiDLAND 
:HI )F TC, "-CUEHr CEL.INC. ,13,1:;-S'􀁬􀁾􀁬􀀡􀁬􀁅􀀡􀁓􀁳􀁁􀁌􀁃􀁕􀁅􀁉􀁉􀁔􀁾􀀠2209 WISCONSIN STREET. SUITE 400, DAlLAS, TX 75229 61WNQ,t.DOf£SS SAME I"""'.''':'"' IPHON£ IP.O. NUMIlEll
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--CM2 ANALYTICAL SERVICE Summar" Report· 09·05·96 S!324·55' SB2 s.s8lank SJ31 3.5·5' I sal 5-6' 6.75' BTEX 8020 (ug/Kg) 11500 IflOOO 11250 5g __ ]4,3 __ I 8,050 TOLUENE _. j <10.0 BENZENE
..:10.0 ! 15,000 I 14700 <1000 <2000 <500· ":lJ.O , ..􀁾􀀭􀀭. 85,500 I 42,700ETIlYL BENZENE <10.0 35,200 84.7 f<IO.n 209.000 50,500 44.6XYLENRS. _p.lODITOTALBTBX <10.0 309,500 107.900
54,450 154 ,􀁾􀁓􀁕􀁒􀁒􀁏􀁇􀁁TE REC, fA) 94.0% 105% 108% 116% 86.9%C-TPll 418.1 TO'fAI.. PETROLEUM (mgfKg) <50.0 i 11,566 􀀶􀁾􀀶􀀴􀀰􀀠3,160 3,990HYDROCARBONS I I SB) 1-3' SB) 4-5' I SB3
H.5' I SB4 3-4' ! SB4 5-5.5' 􀁾􀁔􀁅􀁘8020 ("17K;.;) If50 11100 lI50 1/250 liS BENZENE j 633 <200 I 1.070__ <500 <10.0----_.-. TOIL'ENE I 􀁉􀀮􀁏􀁾􀁾1.. <200 778 <500 <10.0 .. I,ETHYL
BENZENE 1 518 I <200 <100 <500 1___<10.0._........ 5,440 , 10. J ---.5,440-'1' XYLENES I 3,850 . ·t __ 5,090_'􀁾􀀭1.270 TOTALBTEX ----:--6 042 i .5.090 , 3,118 10.1 SURROGATEREC. f?')
I iJ2% I 116% I 92.3% 102% I 94.0% .TPB: 418.1 • TOTAL PETROLEUM (mglKKJ I 16,QIi{1 24,300 , 32,9'00 3,640 <10.0 HYllROCARBONS ! I 
CM2 ANALYTICAL SERVICE Summary Report-09-05-96 , I SB52·3' SB) 6·65' SB63.5·5' i SB66·6.75· SB7 3·4' RTEX 8020 ("g/Kg) J125 115 115 115 1Il00 BENZENE <50.0 <10.0 <10.0 1.. <10.0 i <200
I 􀀮􀀭􀀭􀀭􀁾􀀭TOLUENE <50.0 <10.0 <10.0 <.1O.0! <200 ETHYL BENZENE 77.3 ___<10.0 _.. l TJ:6 .... --<1013-·.. ··· 435 XYLENES 679 .65A 274 ._<!OJ!.. 􀀭􀁾􀀮􀀭􀀧􀀭4230 !..._. TOTALBTEX
I 756 65.4 286 < W.O 4,660_. ._. 􀁾􀀭􀀢􀀮􀀠_. 􀀡􀁯􀁬􀁯􀀯􀁾􀀧􀀭􀁲􀀭􀀭􀁩􀀲􀀵􀀥􀀠-SURROGATE REC. r%) 72.2% 71..5% 95.1% TPH 418.1 TOTAL PETROLEUM ;lIlglKg) J,900 300 1,300 30.0 2,700 HYDROCARBONS
SB82.5SB92.5SH94·4.5' 3.5' 3.S' RTEX 8020 (ugl."x) 1125 1/1.5 1125 I BENZENE 83.4 <50.0 <50.0 TOLUENE <.50.0 I <50.0 <50.0 _....ETHYL BENZENE 214 142 295_... XYLENES 2700 2070 2730 .
TOTALBTEX 2,997 .2,212 3,025 SURRCNATB REC. r%) II{)"/I, 􀁬􀁏􀁾􀁗􀀮􀀠105%-.. TPJU18.1 TOTAL PETR016UM (/I1g1Xg) 3,360 I 5,000 1,866 ;HYDI>OCARBONS 
TRIAD ONSITE SYSTEMS PROJECT#:42078,A01 ADDISON AIRPORT FUEL FARM ADDISON, TEXAS TEG Project #: T2-970314 TRPH (EPA Method 418.1) & BTEX (EPA Method 8020 Modified) ANALYSES OF SOILS
Ethyl Total Surrogate Sample Depth Date TRPH Benzene Toluene 8enzene Xylenes (EPA 8020) Number (ftl Analyzed mglKg mll'KIl mll'K!i1 mlllKl! mgIKg % 􀁒􀁥􀁣􀁯􀁶􀁥􀁾􀀠METHOD BLANK 3114197
ND ND ND ND ND 123% 8·10 2.04.0' 3114197 ND ND ND ND ND 84% 8-10 5.0·5.5' 3114197 ND ND ND ND ND 74% 8·11 2.04.0' 3114197 ND ND ND ND ND 106% B-l1 4.0-4.5' 3114197 ND ND ND ND ND 109%
8-12 2.0-4.0' 3114197 ND ND ND ND ND 111% 8·12 5.0-6.0' 3114197 58 ND ND ND ND 71% 8-13 3.04.0' 3114197 ND ND ND ND ND 83% 8-13 4.0-5.0' 3114197 ND ND ND ND ND 111% 8-14 4.0-6.0' 3114197
477 ND ND ND ND 99% B·14 6.0-6.5' 3114197 97 ND ND ND ND 113% 8-15 4.0-6.0' 3114197 303 ND 0.10 0.60 1.34 80% 8-15 6.0-6.75' 3114197 819 0.36 0.72 0.81 4.79 124% 8·16 1.0·1.5' 3114197
1279 0.13 0.09 1.04 2.34 107% 8·17 1.0-2.25' 3114/97 32 ND ND ND ND 114% 8-18 1.0-3.5' 3/14/97 ND ND ND ND 0.70 1.78 72% 8-19 1.0-3.0' 3/14197 ND ND ND ND ND 89% 8-20 .2.0-4.0' 3/14197
ND NO ND ND ND 112% 8-20 4.04.75' 3114/97 ND ND ND ND ND 102% B·21 1.0·2.5' 3/14/97 ND ND ND ND ND 86% 8-22 1.0-2.0' 3114/97 ND ND ND NO ND 71% 8·23 1.0·3.0' 3/14197 419 ND ND ND 1.53
74% 8·24 1.0-2.25' 3/14/97 NO ND NO NO NO 79% B·25 1.0·3.5' 3/14/97 NO ND NO ND NO 94% '. ! B-26 2.04.0' 3114197 149 ND NO NO 2.92 99% ! B-26 8-27 4.0-6.0' 1.0·3.0' 3114197 3/14197 46
20 ND ND ND ND NO ND 1.51 ND 128% 74% 8·28 2.04.5' 3114197 NO NO ND NO ND 17% 8-29 l!..o..3.S' 3114/97 NO NO ND NO ND 96% DETECTION LIMITS 10 0.05 0.05 0.05 0.05 65%·135% "NO" • NOT
DETECTED AT OR ABOVE THE DETECTION UMITS LISTED ABOVE: ANALYSES PERFORMED IN TEG·TEXAS' MOBILE ENVIRONMENTAL LABORATORY ANALYSES PERFORMED 8Y: Mark Masino & Richard Rodriguez 
TRIAD ONSITE SYSTEMS PROJECT#:42078.A01 ADDISON AIRPORT FUEL FARM ADDISON, TEXAS TEG Project#: T2-970314 TRPH (EPA Method 418,1) & BTEX (EPA Method 8020 Modified) ANALYSES OF WATERS
Ethyl Total Surrogate Sample Depth Date TRPH Benzene Toluene Benzene Xylenes (EPA 8020) Number (tt) Analyzed mg/L mg/L mg/L mg/L mg/L % Recovery r METHOD BLANK 3/14/97 ND ND ND ND ND
123% B-14 (Water) 3/14/97 2084 0.082 0.114 0,298 1.574 75% DETECTION LIMITS 1.0 0.005 0.005 0,005 0.005 65%-135% "NO" -NOT DETECTED AT OR ABOVE THE DETECTION LIMITS LISTER ABOVE: ANALYSES
PERFORMED IN TEG·TEXAS' MOBILE ENVIRONMENTAL LABORATORY ANALYSES PERFORMED BY: Mark Masino & Richard Rodriguez 
TRIAD OliiSIT' 􀁾􀁙􀁓􀁔􀁅􀁍􀁓􀀠 PROJECT#:..,,078.A01 ADDISON AIRPORT FUEL FARM Quality Assurance Report ADDISON, TEXAS 14·Mar·97 TEG Project #: T2·970314 MATRIX SPIKE (MS)IMATRIX SPIKE
DUPLICATE (MSD) FOR SOILS COMPOUND TRPH Benzene Toluene Ethyl Benzene Xylenes (total) SPIKE CONC. 􀀨􀁭􀁬􀁬􀀯􀁋􀁾􀀩􀀠500 1.00 1.00 1.00 3.00 MS CONC. (mjl/Kg) 482 0.93 1.04 1.19 3.41
MS RECOVERY (%) 96% 93% 104% 119% 114% MSD CONC. (mg/Ka! 498 0.85 1.11 1.14 3.40 MSD RECOVERY (%) 100% 85% 111% 114% 113% RPD (%) 3.3% 9.0% 6.5% 4.3% 0.3% ACCEPTABLE RPD 15% 15% 15%
15% 15% ACCEPTABLE RECOVERY 65%-135% 65%-135% 65%·135% 65%-135% 65%-135% MATRIX SPIKE (MS)IMATRIX SPIKE DUPLICATE (MSD) FOR WATERS "SPK CONC" -CONCENTRATION SPIKED INTO MATRIX "MS CONC"
-ANALYZED CONCENTRATION OF SPIKED SAMPLE "0;., REC"· PERCENT RECOVERY OF SPIKE FROM MATRIX "RPO" -RELATIVE PERCENT DIFFERENCE BETWEEN MATRIX SPIKE AND MATRIX SPIKE DUPLICATE RECOVERIES
ANALYSES PERFORMED IN TEG·TEXAS· MOBILE ENVIRONMENTAL LABORATORY ANALYSES PERFORMED BY: Mark Masino 
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�􀁬􀁪􀁾􀁬􀀩􀀠/'.' ..' Labaratory Notes: __.L_...lL , Toti'l' No, of COnli'lincrs 􀀬􀀭􀀭􀁾􀀭􀀢􀀢􀀭􀀭􀀭􀀢􀀧􀀠􀁾􀀠.• " ---" j------------------!---I DIIt(fWAI 􀁓􀁣􀁲􀁴􀁬􀀮􀁾􀀠In!d(l? Y/N/NA1_.._._..
-'-_..:..._______• __-j-_.... MMP llJ95 I\: I, 
March 17, 1997 Ms:. Ri38 Basso Triad Onslle Systems 2435 Southwell, Sle. 1 Dallas, TX 75229 RE: SOIL & WATER SAMPLES -ADDISON AIRPORT'FUEL FARM' TEG-Texas project #T2-970314 Ms. Sasso:
Please tind enclosed Ihe complete dala report for the soil and water samples from the Addison Airport Fuel Farm site In Addison, TX for Triad Onsile Systems. All samples were analyzed
In TEG-Texas' mobile environmental laboratory for the following: " -28 soil samples for Total Recoverable Petroleum Hydrocarbons TRPH (EPA Method 418.1). and Volatile Aromatic Hydrocarbons
BTEX (EPA Method 8020). -1 water sample for Total Recoverable Petrol!!um Hydrocarbons TRPH (EPA MethOd 418.1) and Volatile Aromatic Hydrocarbons BTEX (EPA Method 8020). ,'uu will also
find enclosed appropriate QA/QC data and Chain of Custody Records for tne above mentioned projects. TEG·Texas appreciates the opportunity to work with Triad Onsite Systems on this project.
If you have any questions regarding ,these data or need further informalion, plaase do not heSitate to call (210)420-3515. ,nc ra!:, '7 /J -..---: i ///0<-1<-( [..I, /1..£ ''.IU.. una
A, PieperiifGen..ral Manager . Transgloba! Environmental Geochemistly ... Te:r.:a.s . Route 2 Sox 54P • Marion, TX 71'>114 􀁔􀁥􀁬􀁾􀁰􀁨􀁯􀁮􀁥􀀺􀀠210,420-,516 • 􀁾􀀮􀁸􀀻􀀠210-420-3bIH
: Mob,l. lel.phone; 210·602·4002 • rag"r; 800-!10-6181 
TRIAD qNSITE SYSTEMS PROJIECTIt:42078.A01 ADDISON AIRPORT FUEL FARM ADDISON, TEXAS . TEG project #: T2-970314 TRPH (EPA Method 418.1) & BTEX(E"PA Method a020 Modified) ANALYSES OF WATERS
EtIlyl Total Surrogate Sample Depth Date TRPH Benzene Toluene Benzene Xyhmes '(EPA a(20) Number (ft) 􀁁􀁮􀁡􀁬􀁾􀁺􀁥􀁤􀀠􀁭􀁾􀁉􀁌􀀠mglL iTIlllL mglL mlllL .... 􀁒􀁥􀁯􀁯􀁶􀁥􀁾􀀠METHOD BLANK
3114/97 NO ND ND NO NO 123% 8-14 􀀨􀁷􀁡􀁴􀁾􀁲􀀩􀀠3/14/97 2084 0.082 0.114 0.298 1.574 . 75% DETECTION LIMITS 1.0 0.005 0.005 0.005 0.005 65%-135% "NO" -NOT DETECTED AT OR ABOVE THE DETECTION
LIMITS LISTED ABOVE: ANALYSES PERFORMED IN TEG-TEXAS' MOBilE ENVIRONMENTAL LABORATORY ANALYSES PERFORMED BY: Mark Masino & Rictlard Rodliguez 􀀮􀀠':, ,􀁾"I' d" 
TRIAD ONSITE SYSTEMS PROJECT#:4l!078.A01 ADDISON AIRPORT FUEL FARM ADDISON, TEXAS TEG Project t1: T2-970314 TRPH (EPA Method 418.1) & BTEX (EPA Method 8020 MOdifred) ANALYSES OF SOILS
. Ethyl Total Surrogate Sample Depth Date' TRPH Benzene Toluene Benzene Xylenes (EPA 8020) NO NO NO NO 84'"8-10 2.0-4.0' 3/14/97 NO ND 74%8-10 5.0-5.5' 3/14/97 ND ND ND ND ND NO NO 106°..,B-11
2.0-4.0' 3114/97 ND ND NO8-11 4.0-4 S' 3114197 ND NO NO ND 109% 8-12 2.0-4,0' 3/14/97 NO t,lD ND ND ND 111% 8.12 5.0-fl.O' 3/14197 58 ND ND NO ND 71% 8·13 3.0-4.0' 3/14197 NO ND ND ND
NO 83% NO NO NO ND NO 111 % 8.13 4.0-5.0' 3114197 6-14 4.0-6.0' :3/14197 477 ND NO ND NO 99'", 6-14 6.0-6.5' 3/14197 97 NO ND NO No 113% 8-15 4 O-fl.O' 􀁾􀀱􀀱􀀴􀀱􀀹􀀷􀀠303 ND 0.10 0.60
134 80% 8-15 6.0-675' 3114197 519 0.36 0.72 0.81 4.79 124% 8-16 10-1.5' :3/14197 1279 0.13 O.OS 1 􀁏􀁾􀀠2.34 107% 6·17 1.0'2.25' 3/14197 32 NO ND NO ND '14% B·18 1.0-3.5' 3/14197 NO
ND NO 0.70 1.7S 72% B-19 1.D-3.0· 3114197 NO NO NO ND NO 69% 8-20 2.0-4.0' 3114/97 NO ND NO ·ND NO 112% 8-20 40,4.iS' 3114/97 NO NO NO ND NO 102% 8-21 10,2.5' 3114197 ND ND NO ND NO
86% B-22 1.0-:;: 0' 3/14/97 NO ND NO ND NO 71% 6·23 1.0-3.0' 3114/97 419 NO ND ND 1.53 74% 6-24 1.0-2.25' 3/14/97 NO ND ND NO ND 79°}.... 6·25 1.0-3.5' 3/14/97 NO ND ND ND NO 94% 8-26
2.0-4.0' 3114197 149 ND ND NO 2.92-99% 8·26 4.0-6.0' 3114197 46. NO NO NO 1.51 12S% r 8·27 1.0-3.0' 3114197 20 NO NO ND NO 74% .B-28 20-4.5' 3114197 NO NO ND NO NO 77'/0 6·29 2.0-3.5'
3114197 ND ND NO ND NO 96% DETeCTION LlMIT$ 10 0.05' 0.05 0.05 0.05 65%-135% "ND"· NOT DETECTER AT OR ABOVE THE DETECTION LIMITS LISTED MOVI:. ANALYSES PERFORMED IN TEG-TEXAS' MOBILE
ENVIRONMENTAL LASORATORY ANALYSE$ PERFORMED BY: Mark Masl!'lO & Richard Rodriguez 􀁾􀀢􀀠
I 1089 E. Collins Blwt -Ricfi:)rdson. lX 750$1 Tel. 912·2)8.5591 Inchcape Testing Services --Environmental Laboratories 􀁆􀁡􀁾􀀠972·238.5592 ANALYTICAL REPORT DATE RECEIVED 19-MAR-1997
REPORT NUMBER D97-3237 REPORT DATE 24-MAR-1997 SAMPLE SUBMITTED BY Triad Onsite ADDRESS 2435 Southwell Suite 1 Dallas, Texas 75229 ATTENTION Ms. Risa Basso PROJECT 42078.A01 Addison
Airport Included in this data package are the analytical results for the sample group which you have submitted to Inchcape Testing Services for analysis. These results are representative
of the samples as received by the laboratory. The information contained herein has undergone extensive review and is deemed accurate and complete. Sample analys and quality control were
performed in accordance with all applicable protocols. Please refrain from reproducing this report except in its entirety. If you have any questions regarding this report and its associated
materials please call your Project Manager at (972) 238-5591. We appreciate the opportunity to serve you and look forward to providing continued service in the future. Martin Je fus
General Manager 
· i 1089 E. o,llins Blvd. Richardson. TX 75081 Tel. 9n':B8·,'iS91 Inchcape Testing Services Environmental Laboratories Fax. 972·238·5592 DATE RECEIVED 19-MAR-1997 REPORT NUMBER D97-3237-1
REPORT DATE 24-MAR-1997 SAMPLE .SUBMITTED BY ADDRESS ATTENTION SAMPLE MATRIX ID MARKS PROJECT DATE SAMPLED PREPARATION METHOD PREPARED BY PREPARED ON ANALYSIS METHOD ANALYZED BY ANALYZED
ON DILUTION FACTOR METHOD FACTOR QC BATCH NO Triad Onsite 2435 Southwell Suite 1 Dallas, Texas 75229 Ms. Risa Basso Soil B-3-A 3.5-4.25' Fuel Farm 42078.A01 Addison Airport 18-MAR-1997
EPA 3550A GSM 20-MAR-1997 EPA 8310 /1 JCA 21-MAR-1997 1 1 AC051-85 , POLYNUCLEAR AROMATIC HYDROCARBONS TEST REQUESTED Acenaphthene Acenaphthylene Anthracene Benzo(a)anthracene Benzo(b}fluoranthene
Benzo(k}fluoranthene Benzo(g,n,i)perylene Benzo(a)pyrene Chrysene Oibenz(a,h}anthracene fluoranthene Fluorene Indeno(l,2.3-cd)pyrene Naphtha l ene DETECTION LIMIT 121 ,g/(g 201 􀀮􀁧􀀯􀁾􀁧􀀠44.2
􀀮􀁧􀀯􀁾􀁧􀀠8.71 .g/Kg 12.1 .9/Kg 11.4 .g/Kg 50.9 .g/Kg 15.4 JLg/Kg 10. 10. I .g/Kg 20.1 .9/Kg 14.1 1L9/Kg 14.1 JL9/Kg 28.8 IL9/Kg 201 JL9/K9 < < < < < < < < < < < < < RESULTS 121 .g!Kg
201 􀀬􀁧􀀯􀁾􀁧􀀠44.2 􀀮􀀹􀀯􀁾􀀹􀀠8.71 .g!Kg 12.1 ,g!Kg 11.4 .g/Kg 50.9 .g/Kg 15.4 .g/Kg 10.1 JLg/Kg 20.1 .g/Kg 28.7 􀀱􀀧􀀹􀀯􀁾􀀹􀀠14.1 ILg/K9 28.8 JLg/Kg 201 JL9/K9 ! l i 
1089 E. Collins Blvd. Richardsoo. TX 75081 Tet 972·238·5591 Inchcape Testing Services Environmental Laboratories Fax 972·2:\8·5592 REPORT NUMBER D97-3237-1 PAGE 2 ANALYSIS METHOD EPA
8310 /1 TEST REOUESTEO I DETECTION LIMIT I RESULTS Phenanthrene I 42.9 1'9/K9 44.1 1'9/K9 Pyrene I 1a.1 1'9/K9 I 81.0 I'9/K9 POLYNUCLEAR AROMATIC HYDROCARBONS I I OUALITY CONTROL DATA
SURROGATE COMPOUND SPI KE REOOVERED p'Terphenyl (55) 87.7 % 
1089 E. CollinS Blvd, Rkhardson. TX 7508\ Tel. 972·23S..5S91 Inchcape Testing Services Environmental Laboratories 􀁆􀁡􀁾􀀠971·23l:M592 DATE RECEIVED 19-MAR-1997 REPORT NUMBER REPORT
DATE D97-3237-1 24-MAR-1997 SAMPLE SUBMITTED BY ADDRESS ATTENTION Triad Onsite 2435 Southwell Suite 1 Dallas, Texas 75229 Ms. Risa Basso SAMPLE MATRIX ID MARKS PROJECT DATE SAMPLED Soil
B-3-A 3.5-4.25' Fuel Farm 42078.AOI Addison Airport 18-MAR-1997 I MISCELLANEOUS ANALYSES , TEST REOUESTED DETECTION LIMIT RESULTS Total Sol ids 0.01 % 80.2 􀁾􀀠AnaLyzed using ASlM 02216
mod. on 􀀲􀀰􀀭􀁍􀁁􀁒􀁾􀀱􀀹􀀹􀀷􀀠by SAS QC Batch No : 240350 
1089 K Collins Blvd. Rid'\3roson. TX 7508! Inchcape Testing Services Tel. 􀀹􀀷􀀲􀀧􀀺􀁂􀁓􀂷􀁾􀀵􀀹􀀱Environmental Laboratories Fat 972·238-551;1::! REPORT DATE : 24-MAR-1997 REPORT NUMBER
D97-3237 SAMPLE SUBMITTED BY Triad Onsite ATTENTION Ms. Risa Basso PROJECT 42078.AOl Addison Airport LABORATORY QUALITY CONTROL REPORT ! ! ! , ANALYTE BATCH NO. LCS LOT NO. PREP METHOD
PREPARED BY ANALYSIS METHOD ANALYZED BY UNITS METHOD BLANK SPIKE LEVEL SPK REC LIMITS SPK RPO LIMITS MS RESULT MS RECOVERY % MSD RESULT MSD RECOVERY % MS/MSD RPD % BS RESULT BS RECOVERY
% BSO RESULT BSD RECOVERY 􀁾􀀠BS/BSD RPD % DUP RPD LIMITS DUPLICATE RPO % LCS LEVEL LCS REC LIMITS LCS RESULT LCS RECOVERY ); SPIKE SAMPLE ID SAMPLE VALUE CUP SAMPLE 10 OUP SAMPLE VAL/!
OUP SAMPLE VAL/2 SEE 5S NA -Naphthalene Acenaph thy l ene Acenaphthene AC051-85 AC051-85 AC051-85 AB98B-47 AB9BB-47 AB988-47 EPA 3550A EPA 3550A EPA 3550A OSH GSM I GSH EPA 8310 ! EPA
8310 i EPA 8310 JCA JCA JCA 􀁾􀀹􀀯􀁋􀁧􀀠JLg/Kg i "e/Kg < 201 < 201 , < 121 I 3330 3330 3330 I 10.0 -122 10.0 -139 10.0 -124 41.0 45.0 40.0 I 3460 2880 2960 104 86.5 88.9 3450 2820 2850
104 84.7 85.6 0.29 2.11 3.79 3670 ! 3090 . 3130 110 92.8 94.0 3480 2840 2900 105 85.3 87.1 5.31 8.43 7.63 _.... ... NA NA NA 3330 3330 3330 10.0 -122 10.0 • 139 10.0 • 124 SEE_BS SEE_BS
SEE_BS SEE_BS SEE_BS i SEE_BS 3249'6 3249-6 3249-6 < 201 < 201 < 121 ..-.... --.. . ... ..-. ... lCS and LCS Ouptlcate reported as as and SSC. Not appl fcable Fluorene AC051-85 : AB988-47
I EPA 3550A ! OSM EPA 8310 JCA 􀁾􀁧􀀯􀁋􀀹􀀠< 14.1 3330 10.0 -142 43.0 3000 90.1 2980 I 89.5 0.67 3250 97.6 3020 90.7 . 7.34 .-. NA 3330 10.0 • 142 SEE_BS SEE_BS 3249'6 < 14.1 --.._..
. Phenanthrene AC051-85 ! AB988-47 I EPA 3550A i OSM I EPA 8310 i JCA , "g/Kg < 42.9 3330 10.0 -142 43.0 2990 I 89.8 3030 i 91.0 1.33 32M 98.5 . 3120 93.7 5.00 ... NA ! 33300 I i 10.0
• 142 ! SEE_BS i i SEE_5S i 3249-6 I < 42.9 I ... ... ... 
I 10&9 E. Collins Bin:!. Rieh;trdson. TX 7503,1Inchcape Testing Services Tel. 972-233·'591 Environmental Laboratories F;,r, 972·1;\8·5592 REPORT DATE : 24-MAR-1997 REPORT NUMBER D97-3237
SAMPLE SUBMITTED BY Triad Onsite ATTENTION Ms. Risa Basso PROJECT 42078.AOI Addison Airport LABORATORY QUALITY CONTROL REPORT I I , i ANAL HE Anthracene i Chrysene i Ben20(k)fluoranthene
I BATCH NO. ACOSl -85 AC051 -85 ACOSl -85 LCS LOr NO. AS988-47 AB98S'Q AB988'47 I PREP METHOO EPA 3S50A EPA 3550A EPA 3550A i PREPARED BY GSM GSM aSH ANALYSIS METHOD EPA 8310 i EPA 8310
EPA 8310 ANALYZED BY JCA JCA JCA UNITS 􀁾􀁧􀀯􀁋􀁧􀀠􀁾􀀹􀀯􀁋􀁧􀀠􀁾􀀹􀀯􀁋􀁧􀀠, , , MET HOD BLANK < 44.2 < 10. I < 11.4 I SPIKE LEVEL 3330 3330 3330 ! SPK REC LIMITS 10.0 -126 10.0 . 199
10.0 . 159 I i SPK RPC LIMITS MS RESULT MS RECCVERY " HSO RESULT MSO RECCVERY X HS/M50 RPC " SS RESULT BS RECCVERY " SSO RESULT S50 RECOVERY " BS/BSD RPD " OUP RPC LIMITS DUPLICATE RPO
li LCS LEVEL LCS REC LIMITS LCS RESULT LCS RECOVERY 1: SPIKE SAMPLE 10 SAMPLE VALUE OUP SAMPLE 10 CUP SAMPLE VAL/I QUP SAMPLE VAL/l 29.0 42.0 2900 2920 i 87.1 87.7 2920 3030 87.7 91.0
0.69 3.70 3090 3260, 92.8 97.9 I 2970 3180 i 89.2 95.5 3.96 2.48 ... _.. NA NA 3330 3330 10.0 . 126 10.0 • 199 SEE_BS SEE_BS SEE_BS SEE_BS 3249'6 3249·6 <: 44.2 < 10.1 ... .. . _.. ...
... ... .LCS and LCS Dvptlcate reported as as and BSO. Not appl icable 50.0 I 3130 I 94.0 3210 96.4 2.52 3520 ! 106 I 3430 103 2.59 ... I NA 3330 10.0 • 159 I SEE_SS SEE.BS 3249'6 <
11.4 ... ... _.. SEE 8S NA 
Y' 􀁾􀁨􀀢􀀮􀀠.. Tf .• MIlo,,,. f CI"··· or -. 􀀧􀁾􀁔􀁃􀀭􀀢􀀠􀁾􀁅􀀨􀀬􀀭􀀭􀁾. 􀀧􀀱􀀹􀀺􀁾·Ic.. flt 'lins 1iel" ..T' (2 ·5£.. 􀀭􀀭􀁾􀀧􀀭􀀧􀀠--::-----''''"-----....;;,;.-----,...--..,-,;:.;._....:.:;,;;;.
..Invoice to Address: 􀁾􀁑􀀬􀀬􀀻􀀿􀀬􀀭􀀭􀀭􀀧􀀮􀀱􀀻􀀬􀀮􀀮􀀧􀀺􀀺􀁊􀀮􀀡􀀺􀀮􀁾􀁤􀁬􀀮􀀮􀀮􀁬􀀮􀁯􀀻􀀻􀀮􀀠Contact: 􀀭􀁌􀁉􀁾􀀢􀀢􀀭􀀭􀁌􀀮􀁌􀀮􀀢􀀢􀀺􀀢􀀺􀀢􀀠Phone; 97:J. ;Z ¥I • 74"t. 27.1-.:).1.ft.
71.f 3 b Fax; J Company: _________ Address: _________ /J ,. Contact: B--;;;;-Du.7.1'1 ''=Phone: __________________ POISO #: ________ /'I 􀁾􀀠/.----., /) 􀁓􀁾􀁉􀀮􀁲􀂷􀁳􀀠s"ure /---'--.:.-'-=-rc.
l2y-s:''-' (-d, .9, , I: i Identifying Marks 01 Sample(s) lIOA PIO S tH'l!/f,1( ri··.i-A 3.:.:;If. ),.') I I􀀨􀀬􀁾􀀠Li .. 􀁦􀁻􀁉􀁊􀀢􀀮􀁾􀀩􀁬􀁍􀀠A:3:·A 􀁗􀁾􀁤􀁣􀀻􀀡􀁬􀁾􀀠I I 1-+----'11---···
1-1-+-. ANALYSIS REQUESTED r-. 􀁾N@IX x tI"\ i-t.1, A lab use t Due Date: r-Temp, of coolers when received (CQ): 1'1.\ I' T I' " Custody Sea'fli IV ,Intact \..tJ I V Screened :'F1 For
Aadioacllvity 􀁩􀁾􀁉􀀮􀀬􀀠lab Sample 10 (Lab Use Only) 66􀁾II -\ 􀁟􀁾􀁾􀀮􀀧􀁻􀁜􀀠Co H L 􀁯􀁾􀀠􀁾􀀠jJ,l 􀁴􀀱􀁊􀁌􀁬􀁪􀀭􀁪􀀱􀁬􀁾􀁊􀁊􀀱􀀱􀀠, flQ """" o Priorily 3 or 100% • BTEX (602I802O).
TPH i416,' or eOHrt). VOlATILES (624/S240).IGNrrAeIl.ITY, TOTAL lEAO (6010) Time: Remarks Relindutshed by: (Signalure) Uale: lIme: Mecelvea oy: (Signature) Date: Time:􀁾􀁾􀀮􀀡􀀮􀀮􀀮􀁤􀀬􀀮􀁾􀁾􀀭􀀾􀁪􀁴
􀁊􀀧􀁐􀀮􀁌􀀡􀀮􀀮􀁌􀁊􀁾􀀭􀀫􀀭􀁾􀁾􀁾􀁾􀁾􀁾􀁪􀀺􀀮􀀺􀁌􀁌􀁬􀁬􀀭􀀭􀀬􀀭􀁉􀀭􀀺􀀧􀀾􀀬􀀭􀀺􀀻􀀧􀁜c..: Relinquished by: (Signalure) Dale: Time: Received by: (Signalure) , -.􀁕􀀼􀀺􀁉􀁬􀁾􀀺􀀠Time:
CHenl's delivery of samples constllU1es acceptance ollnchcapeltTS·Oalfas terms and conditions confained in the Price Schedule. Malrix WW -Waslowater W • Wator S • Soli so 􀁾􀀠Solid L
􀁾􀀠Liquid A 􀁾􀀠Air 8ag C • Charcoal lube SL 􀁾􀀠Sludge OMOil ITS .. Danas cannot accept verbal changes. t Coolainet VOA 􀁾􀀠40 m1 vial NG • Amber I Or Glass 1 Uter 250 ml • Glass wide
moulh PlO· Plastic or other·__________ Please Fax written changes to 214-238-5592 OFFice USE ONLY I 
ATTACHMENT 18 Copies of manifests, waste receipts, or other documents necessary to document waste disposition 
Copies of Manifests. Waste Receipts•.•.Waste Disposition LPST ID: 91471 To date no documented wastes have been transported from the site. Most recent subsurface investigations were performed
using a geoprobe, and therefore, no soil cuttings were generated. 
ATTACHMENT 19 Photographic documentation 
PHOTO I VIEW OF SUBJECT SITE FUEL FARM (ARROW INDICATES MOTOR FUEL DISPENSER WHICH ORIGINATED LPST) PHOTO 1 ' . •0' . 􀁩􀁣􀁾􀁜􀀢􀀬􀀬􀀮􀀭􀀻􀁏􀀻􀀭􀁩􀀺􀂷􀀻􀀻􀂷􀁩􀁩􀀺􀀺􀁾􀀻􀁩􀀧􀁾􀀠'.,>'
􀁾􀀧􀀾􀀮􀀢􀀻􀀺􀀬􀀬􀀬􀀯􀀠:0-5;.:;&,:,',;;:)C':o.': 􀁾􀀧􀁤􀀡􀀩􀀻􀁾􀁴􀁾􀀺􀁾􀀵􀁽􀁾􀁾􀀻􀀺􀀻􀀧􀀻􀁾􀁩􀀾􀀠SUBJECT FUEL FARM IN FOREGROUJ\1) AND TWO ADJACENT FUEL FARMS IN BACKGROUND 
PHOTO 3 VIEW ALONG ADDISON ROAD IMMEDIATELY TO EAST OF SUBJECT FUEL FARM (LOCATED BEHIND FENCE ON RIGHT) PHOTO 4 VIEW OF ADDISON AIRPORT TO NORTH OF SUBJECT FUEL FARM (ACROSS ROSCOE
TURNER ROAD) 
PHOTOS VIEW FROM SOUTH ADJACENT FUEL FARMS (ARROW INDICATES SUBJECT FUEL FARM TO NORTH) PHOTO 6 VIEW OF HANGER BUILDING LOCATED WEST OF FUEL FARMS (FACING NORTH) 
PHOTO 7 OTHER AIRPORT FUEL FARMS LOCATED BEHlND WOOD FENCES (ARROW INDICATES PREVIOUSLY SHOWN FUEL FARMS IN BACKGROUND) PHOTOS A-VIEW OF OTHER AIRPORT FUEL FARMS BEHIND WOOD FENCES 
ATTACHMENT 20 Proposal for next appropriate action and/or Site Closure Request 
Proposal for Next Appropriate Action LPST lD: 91471 It is recommended that the site be evaluated using the current TNRCC exit evaluation criteria. 
ATTACHMENT 21 Geoph.ysical survey , I 
CDM Camp Dresser & McKee Inc. «7vilOnnwmtaf MJrvIoes 1.2770 Coit Road. Suite 800 Dallas, Texas 75251 Tel: 972308·9000 Fax: 972 960·2313 February 28, 1997 Ms. Marisa Basso Triad Onsite
Systems, Inc. 2435 Southwell, Suite 1 Dallas, Texas 75229 Re: Results of Earth Conductivity Geophysical Survey Addison Airport Fuel Farm Addison Rd. and Roscoe Turner Rd. Addison, Texas
Dear Ms. Basso: Camp Dresser & McKee Inc. (COM) is pleased to submit this letter report summarizing the results of the earth conductivity geophysical survey performed at the above referenced
project site. The details of the investigation activities performed at this facility are presented in the following sections. Project Background A petroleum release was documented at
this site during previous drilling activities performed by Triad Onsile Systems, Inc. (Triad) and the site is currently registered as a Leaking Petroleum Storage Tank (LPST) facility
with the Texas Natural Resource Conservation Commission (TNRCC). Petroleum consti tuents were encountered in several of the borings previously advanced at the site by Triad and further
site work was needed to assist in delineating the detected subsurface contamination to the greatest extent possible using non-intrusive geophysical techniques. According to information
provided by Triad, rock is located at a depth of 4.5-7 feet beneath this site and was encountered during the advancement of each of the previous borings. COM received authorization to
proceed with the earth conductivity geophysical survey on February 7,1997. The objectives of this investigation were to assist in identifying the general limits of the petroleum hydrocarbon
impacts 􀁩􀁤􀁥􀁮􀁾􀁦􀁩􀁥􀁤􀀠near the fuel farm, and to assist in reducing the number of soil borings thaI would be required to delineate the extent of the subsurface petroleum hydrocarbons
using conventional drilling methods. Electromagnetic (EM) Terrain Conductivity Surveys Electrical conductivity denotes the ability of a material to conduct an electrical current. An
electromagnetic (EM) terrain conductivity survey measures spatial variations in the electrical conductivity ofsubsurface earth materials. The conductivity measurements can be used to
evaluate distributions of various subsurface materials of contrasting electrical properties. Indigenous subsurface materials exhibit background conductivity 
CDM Camp Dresser & McKee Inc. Ms. Marisa Basso February 28, 1997 Page 2 values, although these values can vary according to variations in the material type (i.e., residuum or rock),
the degree of moisture, and the presence of ionic species dissolved in the moisture. As a result, determination of applicable background conditions must consider these variables. Physical
and chemical differences of subsurface materials, as compared to background conditions, can be discerned using EM survey techniques. EM Survey Methodology The Goonics Model EM-31 Terrain
Conductivity Meter offers a means to determine gross ground conductivity in a rapid, non-invasive manner by inducing an electromagnetic field into the earth to effective depths of approximately
9 feet (horiwntal coil) and 18 feet (vertical coil) below ground surface, depending on instrument configuration. For each of the two depths, the conductivity measurements represent a
weighted composite value, referred to as apparent conductivity, down to the indicated depth. For example, subsurface materials existing within the upper five feet will make a greater
contribution to the observed conductivity value tl'!an materials existing below five feet. The 9-foot and 18-foot effective depths are considered approximate because these depths vary
depending on the apparent conductivity. For typical earth conductivity ranges, the approximated depths are valid. Under extremely low apparent conductivity conditions, the effective
depths may be less, and under extremely high apparent conditions, the effective depths may be greater. Measurements provided by the instrument are conventional conductivity units of
milliMhos per meter (mmhos/m). The profiling technique used at the site consisted of earth conductivity measurements collected at regular intervals across the area of interest, and continuing
laterally until background values for the area were observed. Measurement location control was established by locating parallel lines to be used as EM survey transects. Transect lines
were were laid out in order to traverse as much open land as possible while accommodating cultural obstacles as much as possible. EM data were then collected at regular interv.als (nodes)
along each transect. The initial EM survey was performed using transect spacings of 25 feet and node spacings of approximately 25 feet. Following a field evaluation of the data, follow-up
data were collected to refine specific areas of interest. The follow-up EM surveys consisted of transects at 25 foot intervals and data collection nodes at a frequency of approximately
12.5 feet along each transect. Parallel transect lines were established using a survey tape to provide distances and a rod and brunton compass to provide transect orienl?tions. Data
collection nodes along each transect were determined using a distance measuring wheel as the data were collected. At roughly 12S-foot intervals along each transect, a 􀁰􀁥􀁲􀁰􀁥􀁮􀁤􀁫􀁬􀁾􀁉􀁮􀀽􀀮base
line was located to proportion the distance ratio. All data coordinates were established in reference to an on-site fire hydrant, located on the east side of the property. Data node
coordinates and recorded conductivity values for the EM survey were tabulated and 
CDMCamp Dresser & McKee Inc. Ms. Marisa Basso February 28, 1997 Page 3 are included as Appendix A. A grid plot showing the transect lines and data nodes is presented in Figure 1. Instiument
performance checks were conducted daily according to the manufacturer's recommendations. The instrument checks consisted of a battery check, electronic nulling, sensitivity checks, and
phase adjustment. These checks were intended to ensure that the instrument provided consistent readings throughout the survey period. Following the instrument checks, terrain conductivity
measurements were recorded at the control point to assess the degree of time-dependent variation in conductivity values indicated, which could result from variations in subsurface moisture
conditions or atmospheric electrical disturbances. Absolute calibration of the instrument was performed by the manufacturer under strictly controlled conditions. An off site, background
control point was also established, based upon surface observations and lateral screening, that was believed to be free of cultural interferences. EM Survey Results The tabulated EM
survey data were used to construct earth conductivity contour maps at the 9-foot coil spacing depth since rock is located at a depth of 4S7 feet beneath the site. The contour maps were
prepared by creating an electronic data file containing the location coordinates and apparent earth conductivity values for each data node. This file was then read by geostatistical
processing software (Surfer, Version 5.0,1993-94, Golden Software). The software generated a grid file from the database consisting of regularly spaced nodes and calculated apparent
earth conductivity values for each node using a geostatistical method referred to as Kriging, which attempts to identify and express trends in the data set. Once the grid files were
created, contour maps showing apparent earth conductivity values were constructed and various site features were identified for reference. Apparent earth conductivity profiles are presented
in Appendix A (Graph 1 and Graph 2). These profiles were constructed from the contour maps and are plots qf apparent earth conductivity (Y-axis) against distance (X-axis). These profiles
were used as visual aids in further assessing apparent earth conductivity distributions. This was performed by recognizing the background portion of the profile, which is typically represented
by a gently undulating profile leading into anomalous zones of higher or lower conductivity. The apparent earth conductivity contour map shown in Figure 2 represents all data points
(unedited). The contours (representing conductivity values) are extremely variable across the site, indicating anomalous areas of higher or lower conductivity, which are deviations from
the observed background conditions. These anomalies should not be construed as "true anomalies," since other cultural features such as power transmission lines, piping, underground storage
tanks, fences, and buIldings 
.', CDM Camp Dresser & McKee Inc. Ms. Marisa Basso February 28, 1997 Page 4 are observed to affect the database. Several site improvements (hangers, roads, fences, etc.) that affected
the database are also shown on Figure 2 . The apparent earth conductivity map shown in Figure 3 represents the data set edited for cultural interferences, and based on this data, earth
conductivity values of approximately 30 to 45 mmhos/m appear to be 􀁩􀁮􀁤􀁩􀁾􀁡􀁴􀁩􀁶􀁥􀀠ofbackground conditions. These earth conductivity values are typical of natural, minimally-disturbed
soils. The earth conductivity values of approximately 45 to 62 mmhos/m appear to be sufficiently elevated above background to correlate with potential subsurface contamination that may
be presentat the site and warrant additional investigation. The area of elevated earth conductivity values that is likely associated with subsurface contamination is shown on Figure 4. This interpretation
is based on a limited data set, and as additional analytical information information becomes available, it may be beneficial to refine this interpretation of the geophysical data. The
data obtained during this investigation and the contour maps developed should assist in identifying the general limits of the petroleum constituents located near the fuel farm and should
also assist in reducing the number of soil borings that will be needed to delineate the extent of the petroleum impacts present at this facility using conventional drilling methods.
However, since intrusive testing was not performed by COM during this project, Triad should assume that additional soil borings will have to be advanced at the site to verify the limits
of petroleum impacts at this facility. It should also be noted that the earth conductivity values generated are based on the electromagnetic variations detected through the entire soil
column at each grid location, not analytical data testing at discrete locations within the soil column. Therefore, a direct correlation between discrete data and associated electromagnetic
variations in a soil column are not possible and backup analytical data should always be acquired. Geophysical surveys of this type should be considered screening tools which can provide
a rapid and effective method of delineating the general limits of contaminant plumes and should always be backed up with appropriate site specific 􀁡􀁮􀁡􀁬􀁹􀁾􀁣􀁡􀁬􀀠testing data. COM
appreciates the opportunity to provide geophysical testing services to Triad. H you have any questions concerning this report, please phone me at 972-308-9000. Sincerely, CAMP DRESSER
& McKEE INC. Daphne A. Hall, P.G. Ron Hartline, P.E. Project Geologist Project Manager 
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • I' -1 􀁾􀀠T23 T22 T21 T20 T19 TI8 T17 T16 TIS T14 T13 T12 TIl Tl0 T9 ..-'" • • •
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250 -100 ·100 -150 -150 -500 -450 -400 -350 -300 -250 -200 􀁾􀀱􀀵􀁏􀀠-100 -50 0 50 Map Scale I o 25 50 75100 2 150 200 0 150 100 If -50 0 0 I ADDISON MUNICIPAL AIRPORT ADDISON. TEXAS
CDM EM31 RAW EARTH CONDUCTIVITY 􀁾􀁮􀁾􀀯􀀬􀁯􀁮􀁭􀀧􀁮􀁴􀁣􀁬􀀠engiMers. 􀁾􀁴􀀺􀁬􀁴􀁭􀁬􀁩􀁬􀁴•• VALUES􀁰􀁉􀁏􀁦􀁬􀁲􀁵􀀺􀀬􀁳􀁾􀀠, trn:1fIagement consultenls FIGURE 2 
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-500 ,""SO -400 ·3SO ·300 -2SO ·200 ·1SO -1 00 ·50 o 50 _-:::::::J o 25 50 75100 ADDISON MUNICIPAL AIRPORT ADDISON. TEXAS CDM ESTIMATED ELEVATED EARTH CONDUCTIVITY en.lt.tIme.IQI ,nrr!IIfl.,••
'Cft,./I.,.. VALUES p{onnerli.. : 􀀺􀀮􀁾􀀻􀀧􀀺􀀺􀀮􀀺􀀺􀀺􀁟􀀡􀁏􀀺􀀧􀁾􀁾􀁾􀀮􀁾􀁾􀁦􀀡􀀮􀁾􀀭􀀮_-...; .__._________________􀀮􀀮􀀮􀀮􀀺􀀮􀀮􀁆􀀺􀀺􀁉􀁇􀀮􀀻􀀻􀁕􀁒􀁾􀁅􀀻􀀮􀀮􀀮􀀻􀀮􀀴􀀮􀀮􀀱􀀠
APPENDIX A 
I EM31 Geophysical Survey Data . Vertical Orientation (9 Ft.) Addison Municipal Airport x y Z I 75 -106.5 I 69.5 I 75 -81.5 55.9 I 75 -56.5 62 I 75 -31.5 168 : 75 -19 , 75.5 , 75 -6.5
57.1 I 75 6 47.1 l 75 18.5 46.2 , 75 31 48.4 ! 75 . 43.5 52.4 I 75 56 53.5 I 75 68.5 55.1 I 75 93.5 55.S , I 75 I 118.5 I 54.3 75 ! 143.5 I 63 I, # !TRANSECTiSTATION'COMMENTSi 1 T1 0
I 2 I 1 3 2 I 4 B.L.1 3 I 5 3.5 Concrete Wall 6 i , • Concrete 4 I 7 4.5 : Plane 8 5 ! i 9 5.5 ! 10 6 I 11 6.5 IWater Line 12 7 IAsphalt 13 I 8 I I 14 9 I I 15 : I 10 i Elec.lPipinQ/Asphalt
==:j -------! I I : I , il i : i 75 I 1685 533 16 , 11 ,Asphalt 75 193.5 43.8 17 12 jAsehalt : ,50 i -106.5 : 79.1 18 , T2 ! 0 i i 50 ! -81.5 ! 49.8 19 , i 1 i i ! 50 ! -56.5 82.5 20
I ! 2 : : : 50 ,i -31.5 ! 168 21 i B.L.l i 3 ! I ,50 I -19 70.1 22 ! 3.5 !Concrete Wall ,50 : -6.5 I 56.1 23 I ! 4 :Concrete ! ,50 I 6 I 44.5 24 : I 4.5 ! I ,50 i 18.5 164.3 25 I 5 !Alrplane
! : ,50 ! 31 , 122 26 , , 5.5 􀀺􀁁􀁉􀁾􀁬􀁡􀁮􀁥􀀠: ! 50 i 43.5 61.5 27 : 6 : AsphalVConc.lPlane 50 , 56 65.5 50 i 68.5 44.2 50 93.5 60.1 50 : 118.5 118 50 I 143.5 : 183 50 ! 168.5 i 58.7
I 50 193.5 ! 87.2 i! 25 -106.5 68.9 I 25 -81.5 44.5 I 25 -!i6.5 54.5 I 25 -31.5 98 , i 25 -19 77.5 , 25 -6.5 I 71.9 -'.-25 6 152 I 25 18.5 64.2 ! 25 31 59.5 , 25 43.5 53.4 ! 25 56 58.2
( 25 I 68.5 62.6 ! 25 93.5 59.2 I 25 i 118.5 I 35.5 ; 28 6.5 29 , , 7 ,, 30 , , 8 31 9 I Transformer 32 i ! 10 : Bldg/Concrete 33 , 11 IBldg ! 34 12 :Asphalt I 35 T3 0 I I 36 1 I 37
2 I 38 B.L.1 I 3 I I 39 3.5 iConcrete Wall 40 4 I I 41 4.5 I I 42 , 5 IAsphalVConcrete 43 5.5 I I 44 6 I I 45 6.5 I FenceIT ranslormer 46 7 iFencelTransformer 47 I I 8 i I 48 I ! 9 ,Transformer/Pipe
.. 􀁾􀀮􀀭􀀭.. 􀁾􀀠I i ; , ! ! j , : ! ; i i , : , Page 1 
EM31 Geophysical Survey Data Vertical Orientation (9 Ft.) Addison Municipal Airport x I y I z i 25 I 143.5 I 80.4 25 i 168.5 , 124.5 I 25 I 193.5 70.3 0 I -106.5 63.S I a T -81.5 50.2
0 i -56.5 59.7 0 i -31.5 59.1 0 , -6.5 I 40.8 I 0 "I 18.5 131.6 # TRANSECT' STATION COMMENTS ' 49 ! 10 i , 50 11 'Electric 51 12 52 T4 0 53 1 54 i 2 55 I B.L.l , 3 I I 56 I I 4 IFeneelSewerIFire
Hvdrant 57 : 5 ,Fence/Asphalt I , , : i ! , : I I : , ! 0 , 43.5 ! 157.6 58 I 6 IFence/AsphaltlElee. i 0 I, 68.5 -,,, 170.2 i 59 I I 7 jFence/AsphaltlElee. I 0 0 I I 93.5 118.5 l I 190
200 ! . 60 61 I, ! ,, , 8 9 !Fence/Elee. iFenee , , "1 0 0 , 143.5 168.5 I ; ; 139.3 156 62 63 ! ; ! I 10 11 : Fenee/Pipe/Elee. 'Asphalt : 0 193.5 , 200 64 I I 12 :AsohaIVUnder. Phone
-25 : -106.5 65.5 65 I, T5 , I 0 , , -25 -25 -25 -81.5 ·56.5 -31.5 43.2 66.1 91.9 66 67 68 i , B.L.l , , 1 2 3 , I ! i ·25 -6.5 : 200 , 69 I , 4 ;Overhead Elee. I , .25 185. 752 , 70
5 'Overhead Elee , ·25 43.5 : 136 71 , 6 ,Asphalt , 1-25 I 66.5 280 72 7 IAsp-haltJPipe : ·25 ! 93.5 I NO 73 i 8 IPipe 1 , j·25 ! 118.5 NO 74 9 IFence/Pipe ; ·25 , 143.5 NO : 75 I 10
!FencelPipe ,I i .25 , 1645 792 , 76 107 I : ·25 16B.5 62.3 -25 193.5 6O.B ·25 I 263.5 155.B, .. ·50 I ·106.5 , 49.8 . -------!·50 i -81.5 52.9 : -50 ! ·56.5 75.8 I I , ·50 I -31.5 I
160.3 i -50 : -6.5 i 140.5 I -50 I 18.5 I 86.2, -50 "1 43.5 42.9 I -50 I 56.5 93 I ·50 I 68.5 85.2 ,, -50 T 81 , 55.3 I -50 I 93.5 i 71 I I -50 I 118.5 "1 73 I -SO : 143.5 I 56.5 I ·50
! 154 I 61.6 "1 -50 I 168.5 I 143.5 i -SO 254.5 "1 61.5 -75 r -106.5 f 50.6 , !Fence ,77 : 11 ! 78 , 12 iAsphaH :, 79 , 13 !HangarI:80 T6 i 0 I : 81 I : !: 1I i82 2 I I : 83 B.l.l ;
3 i 64 , 4 iFence/Asphalt I 85 5 iFence I ! 86 I ! 6 I Concrete I I 87 6.5 i i 88 1 7 Concrete I I : 89 ! 7.5 , I i 90 8 Concrete I 91 I 9 Fence i 92 I 10 Asphalt ! 93 ! 10.5 ,Hangar
! 94 I 11 IBldalConcrete : 95 i I 12 iHangar 96 T7 i 0 ! I, : , I -i 􀀮􀀭􀀭􀀮􀁾􀀠: I , Page 2 
EM31 Geophysical Survey Data Vertical Orientation (9 Ft.) Addison Municipal Airport x ! y I : -75 ; -81.5 Ij -75 ; -56.5 , i -75 ; ·31.5 ! , -75 ! ·19 I -75 i -6.5 ! -75 I 18.5 -75 I
31 I -75 i 43.5 ! : -75 I 56.5 -75 I 68.5 -::75 ; 81, -75 , 93.5 , -75 ! 118.5 ·75 : 143.5 , -75 246 ; -100 -106.5 i -100 -81.5 , , -100 : -56.5 , -100 ·31.5 -100 -19 ·100 -6.5 , , -100
18.5 ·100 , 31 I ·100 43.5 ! ·100 56.5 -·100 68.5 -100 , 81 , : ,·100 935 -100 118.5 ; ·100 133.2 ·100 143.5 --100 235 -125 -156.5 -125 i ·131.5 I ·125 , -106.5 , I , ·125 I -81.5 i
! ·125 ! -56.5 I I" I·125 ·31.5 ·125 I ·19 ·125 ! ·6.5 I ·125 I 18.5 ! ·125 , 31 I! ·125 , 43.5 iI -125 ; 56.5 I ·125 , 66.5 II ·125 i 93.5 i ·125 : 118.5 I -125 , 124.5 ! Z i 150.5
I 66.1 , 40.9 I 74.2 I 76.1 I 51 I 33.3 I 40.8 ,, 62.3 i 43 I 67 ! 67.5 I I 70.3 60.6 ! 71.5 189.3 ! 98.2 52.8 88.5 i 200 52 74 I 76.5 ! 40.2 53 , 34.3 91.9 # ITRANSECT! STATION <::()MMENTS
! 97 1 I 98 2 I 99 B.L.1 3 I .....1 100 3.5 'Fence 101 4 IGravel 102 5 iGravel 103 5.5 I 104 I 6 , ! 105 , I 6.5 i 106 , 7 ! 107 I 7.5 , ! 108 I I 8 iConcrete I 109 , 9 j Concrete Curb
, 110 I 10 : Asphalt ! _... 111 I 11 ,Hangar/Gas Line 112 T8 I 0 ,, 113 i 1 : 114 i 2 ; 115 ! B.L.1 3 I, 116 , ; 3.5 ,Fence ; 117 i 4 : Fence/Piping! , 118 ! , 5 Fence/piping' 119 :
5.5 'Fence : 120 i 6 .Gravel I 121 : : 6.5 : 122 : 7 123 i 7.5 :Concrete Wall 1102 . 124 8 Concrete/Gravel 51.5 125 i , 9 , , , : 52.1 I 126 i 9,4 56.9 : 127 10 􀁾􀀭􀀮􀀭􀀭􀀭􀀭61.7 128
11 Hangar 164.7 129 , T9 -2 Storm Drain 200 130 I ·1 'Elec.lStorm Drain , 143.4 i 131 I 0 I I 99.5 , 132 ! 1 I 68.4 133 2 I 70.1 134 B.Ll I 3 I 98.1 , 135 I 3.5 !Fence: 52 136 4 ,Pipe,
38 I 137 5 ,Gravel/Pipe 55.6 I 138 5.5 iFence 38.5 I 139 6 IGravel , 50.3 , 140 I 6.5 I I, I 42.6 I 141 I 7 'Gravel I 145.3 , 142 8 IFence I 47.7 143 i 9 iAsphalt ,, , 47.1 I 144 I I
9.2 . Hangar I i "'! : ,,, I I, I l , I : I i ! I "'I ! I, , : !, , ! I , I ........_'" , ,., .., i I ! i Page 3 
i EM31 Geophysical Survey Data Vertical Orientation (9 Ft.) Addison Municipal Airport . I x I y Z ·125 143.5 118.9 ·125 I 225.5 I 44.1 -150 I -156.5 29.5 -150 -131.5 I 28.8 -150 -106.5
31.1 -150 -81.5 26.5 -150 -56.5 4.4 -150 -31.5 78.7 -150 -19 91.6 -150 ·-6.5 90 -150 I 18.5 65 -150 31 45.1 -150 I 43.5 I 36.1 -150 1 56.5 , 53.5 -150 i 68.5 , 46.6 -150 93.5 i 125.6;
·150 115.1 ; 46.6 -150 , 118.5 45.7 -150 ! 143.5 i 142 ·150 , 213.5 ! 39.8 -175 ! -156.5 i 33 -175 ! -131.5 ! 32.8 ·175 ! -106.5 i 29.2 -175 -81.5 ! 32.2 -175 -56.5 , 51.1 -175 -31.5
190 -175 -6.5 64 -175 18.5 NO -175 i 31 50.2 -175 , 43.5 38.8 -175 : 56.5 ! 52.9 -175 ; 68.5 ! 110 -175 , 93.5 76.1 -175 i 105.5 i 44.3 -175 118.5 49 -175 203.5 41.4 -200 , -156.5 34.3
-200 I -131.5 40.8 -200 ! -106.5 38.2 -200 i -81.5 31.9 -200 . -56.5 62.1 -200 i -31.5 169.9 -200 -6.5 30 ·200 18.5 37.3 -200 ; 31 I 46.2 -200 i 43.5 36 -200 I 56.5 83.5 -200 I 68.5
I 121.5 I I I I ,, : ; ; i ; 1 i I I I i i i : i , I I ,, , ; # TRANSECT: STATION COMMENTS. 145 I 10 ,BldQ I, 146 i 11 I 147 Tl0 , -2 ,, , 148 -1 149 ! I 0 , ! 150 1 ; i 151 2 , i 152
B.L.l 3 i I 153 3.5 ; Fence I 154 4 ,PipeIFence/UST/Gravel 155 5 iPipe/Fence/Gravel 156 i I 5.5 : Fence I 157 I 6 Gravel II 158 ! I 6.5 159 1 , 7 Gravel 160 , , 8 Fence 161 8.8 162 9
Asphalt 163 ! 10 Bldg , 164 ! 11 , 165 T11 -2 , 166 i -1 167 0 168 1 , 169 2 170 B.L.l 3 171 4 Fence/Pipe/UST 172 5 173 , 5.5 FenceI 174 ! , 6 Gravel 175 , , 6.5 I 176 I ; 7 . Fence/ConcJAsphalt
In ! 8 Fence/Asphalt 178 ; 8.5 , 179 I 9 iAsphalt i 180 10 , I 181 T12 -2 ! I 182 -1 , ! 183 ! 0 184 1 ! 185 ! 2 : I 186 B.L.l I 3 : i 187 I 4 !Gravet/Fence:, 188 i 5 iGravel i 189 I
5.5 , 190 I i 6 I 191 I 6.5 ! 192 i ! 7 . Fence ! I i ----! i ----".-! ! ! I i I , Page 4 
EM31 Geophysical Survey Data Vertical Orientation (9 Ft.) Addison Municipal Airport x 'Y Z IITR, ·200 I 93.5 40.9: 193 -200 I 96.5 43.5 194 -200 I 118.5 124 j 195 -200 I 193.8 42.3:
196 􀁾I -156.5 I 37.1 I 1.97 I -225 I -131.5 39.1' 198 -225 ! ·106.5 34.3: 199 -225 -81.5 30.6! 200 ·225 -56.5 60.3 I 201 ·225 -31.5 170.5 202 -225 -6.5 99.1 203 ·225 18.5 36.9 204:
-225 31! 45.1 205 ·225 43.5 j 41.7 j 206 ·225 68.5: 120.9 207 ·225 87.7 42.5' 208 ·225 93.5 41 .6 209 -225 118.5 144.5 210 -225 ! 184.5 ! 43.9 : 211 ' T13 B.L.1 -250 i -156.5 I 42.9
21 ' T14 ·250 , -131.5 I 44.3 21 -250 -106.5 i 30.9 . 21 , -250 -81.5 i 29.1 215 -250 -56.5 46.1 216 -250 : ·31.5 '99.3 217. B.Ll -250 : -6.5 ND 21, -250 6 49.1 21 -250 18.5 38,8 22:
-250 I 31 46.5, 221 ' -250 '43.5 92' 222 ! -250 68.5, 54.2 • 223 -250 i 77.8 , 41.6 : -250 : 93.5 , 41.6 i i " ! 172.8 ! 41.3 ; -I -156.5 200 I 227 T15 -I -131.5 200, 228 -275 ·106.5:
198.1 i 229 -275 i ·81,5 40.9, 230 : -275 -56.5 42.2 231 ,ST, 8 8.1 9 10 .; -' 1 2 3 I 4 , 5 ! 5.5 ! 6 7 7.8 8 9 , 10 I -2 I -1 I Bldg ,Gravel !Gravel : fence iBldg , 0 : 1 ; 2 ! 3 4
4.5 : 5 : 5.5 I ; 6 IGI 7 7.4 ! , 8 : 9 I ·2 ! -'275 -31.5 167.7! 232 I B.L.l I ·275 -8.5 ND ·275 6 46 ·275 18.5 34.9 -275 31 57.5 i -275 '43.5 58.5 ·275 68.5 14. ·275 i 164.9, 11 233
I 234 !35 !36 !37 238 I 239 I 4 4.5 5 5.5 • 6 IFence I 7 j, I 8 II'" -300 : '156,5. !9.' I 240 i T16 , ·2 'water Line I ! , i ; ; , , i : , ; , : : . , I Line I , i i i , : . , . Page
5 
EM31 Geophysical Survey Data .Vertical Orientation (9 Ft.) Addison Municipal Airport 􀁾􀁾􀁘􀁾􀁾􀁾􀁙􀁾􀁾􀁚􀁾􀁔􀀧􀀽􀁊􀀣􀁾􀁊􀁔􀁾􀁒􀁁􀁬􀁬􀁎􀁾􀁓􀀻􀁉􀁅􀁾􀁾􀁾􀁾􀁾􀁾􀁾􀁾􀁾-300 -131.5 42.6! 241
, -1 -300 -106.5 32.2 242' 0 ·300 ·81.5 110.6 243: 1 -300 -56.5 47.1 244' 2 -300 -31.5 71.2: 245 : B.L.l 3 ,􀀱􀀭􀀭􀁟􀁾􀀳􀀰􀀰􀀰􀀺􀀭􀀭􀀭􀁩􀀭􀀭􀀶􀀢􀀽􀀧􀁩..-='-5-+i􀀭􀀭􀀭􀀭􀁣􀁎􀀺􀀭􀀺􀀺􀁛􀁄􀁾􀀭􀀻􀀭􀀭'-=2=
--46-'---==-1---'4:----+----,--"-.._.-1 -300 i 18.5 155! 247 : 5 -300 I 43.5 47 '248 . 6 ·300 58.8 44.2: 249 6.5 -300 . 68.5 52.2 I 250 , 7 -300 154.7 43.2 251; 8 -325 ·156.5 200 252:
T17 -2 -325 I -131.5 200 253 -1 -325 I -106.5 I 154 ; 254 . 0 -325 ; -81.5 85.4· 255 1 1 -325 : -56.5 43.1; 256 ,2 I -325 ' -31.5 '58.6 257 B.L.1 3 -325 i -6.5 1 m : 158 ! 4 i -325 18.5!,3
159 5 Ir.on" -325 , 43.5 • 8'1.9 : 160 ! 6 i -325 • 49.5 ! 44.2 261 6.2 -325 : 68.5 42.5 262 ,7 -325 ; 93.5 '138.2 21)3 i 8 -325 : 144.5 : 40. 21;4 i 9 -350 , -156.5 ! 60.3 21)5 T18:-2
-350 , -131.5 . 40.1 266 : -1 -350 : -106.5 : 37.7 267 '0 -350 -81.5' 29.1 268 1 1 -350 ! -56.5 45.2 269 2 ! -350 . -31.5 69.4 270 B.L.l; 3 ·350 . -6.5 64.7 271 I 4 -350 18.5 80.5272
,5 ·350 38.9 44.8 273 . 5.8 -350 43.5 48.5 274 -350 13 75 40. 275: -371 ,·1, ..5 54. 276 T19 -37b i -1:.5 51. 277! ·375 I -106.5 37.8 278 -375 -81.5 25.6 I 279 -375 -56.5 49.8 280 􀁾􀀠-31.5
181 =375-6.5 141 B.L.1 -375 18.5 48. I : -375 29 47.2 264: -375 43.5 63.2 285: -375 124. 40.2 286· -400 I -156. 52.6: 287 T20 . -1 o 1 5 5.4 6 7 -2 iBldq . -400 I -131. 44.2' 288 . -1
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EM31 Geophysical Survey Data Vertical Orientation (9 Ft.) Addison Municipal Airport. l x y , Z , # TRANSECT: "" A "UN -400 I -106.5 3' '.8 i 289 , 0 -400 -81.5 2: '.4 I 290 I 1 -400
-56.5 47.3 2, 2 -400 -31.5 99.7 ! 2! B.L.l 3 -400 -t i.3 4 -400 11 5 :.1 294 5 -400 1.3 295 I 5.1 -400 43.5 95.8 i 296 I 6 IBldg -400 114.4 41.4 I 297 7 -425 -156.5 I 94.3 i 298 T21
-2 -425 -131.5 , 174.6 I -1 -425 -106.5 , 193 i· 0 ! .. -425 -il1.5 27 I , -4 25 I -!i6.5 ! 43 i 302 i I -425 -;11.5 I 87.4 : 303 B.L.1 : i -425 i -6.5 i 174 304 4, -425 12.7 : 41 I
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311 , 1 ; -450 : -56.5 ' 44.3 312 2 -450 : -31.5 ' 4 '.8 . 113 : B.Ll . 3 , -450 I -6.5 : 18 114 : 4 iFen, "'" • ravel -450 • 18.5 : 58.6 15 , , 5 !VV"""" Line -450 ! 99 I 42.3 316 I
6 i -475 , -156.5 i 44.9 317 T23 -2 I -475 : -131.5 . 33 318 -1 ,, , -47: I _. 06.5 I 36.2 119 i , 0I -47: , -: 11.5 i 22.1 l20 I 1 -47: i -li6.5 I 41.4 , 121 I , 2 i, -475 -31.5 145.2
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" Washington IndllSlrial/PfllclISS Thursday, December 13, 2001 WGI Proposal No. 80805-1 (Rev.2) QP&ES 01-E005 Mr. James C. Pierce, Jr., P.E. Assistant Director of Public Works Town of
Addison P.O. Box 9010 Addison, Texas 75001-9010 PROPOSED SCOPE OF WORK FOR PHASE II ENVIRONMENTAL SITE ASSESSMENT ADDISON AIRPORT FUEL FARM ADDISON, TEXAS Dear Mr. Pierce: Presented
here is Revision 2 of our proposed scope of work for the Phase II Environmental Site Assessment of the fuel farm at Addison Airport in Addison, Texas. This proposed scope of work is
submitted in accordance with our conversation on August 20, 2001, as authorized by the notice of award from the Town of Addison to Washington Group International, dated August 15, 2001,
and subsequent letters and conversations. This proposal supercedes any previous proposals or revisions. Background The Town of Addison retained Washington-Staubach to provide management
services at Addison Airport beginning January 2001. Another entity managed the airport before 2001 under a lease agreement with the Town. As part of the Town's contract with Washington-Staubach,
the Town will establish current, baseline conditions in the subsurface in the fuel farm area, specifically the presence or absence of hydrocarbon contamination. The baseline data will
be provided to Washington-Staubach so they can develop, in concert with the Town, a compliance strategy suitable for the fuel farm that is based on an understanding of current conditions.
This proposed scope of work is designed to address the Town's need to establish these baseline environmental conditions at the fuel farm and to develop a compliance strategy. Site Location
and Description Addison Airport, located in Addison, Texas, has several fuel farms located in the southeastem comer of the airport. From the best information available, and according
to a Phase I Environmental Site Assessment Update developed by Camp Dresser & McKee (CDM), there are 29 registered Underground Storage Tanks (USTs) and one unregistered above-ground
storage tank located at the airport. Fifteen of these USTs are currently inactive. The remaining 14 active USTs and the above-ground storage tank must remain in-service until a new bulk
fuel storage and dispensing facility has been constructed or 1250W. Sam Houston Pkwy, S.Hous1on, TXn042 • P,O. Box 1281 Houston, TX77251-1281 • Phone: (281) 529-3000 • Fax: (281) 529-8966
www.wgint.oom 
Mr. James Pierce, Jr., P.E. Thursday, December 13, 2001 Page 2 suitable temporary alternatives are available. There is also concern that additional unregistered aboveground and underground
fuel storage tanks may be on the airport property. During an April 11, 2001 inspection of the fuel farm areas, Washington personnel observed another area suspected to have once contained
a UST with associated fuel lines that is not documented in the Phase I Update report. This area shows surface evidence of the previous presence of a tank and associated fuel lines. It
is located north across the driveway from Fuel Area #1. Washington personnel also observed several monitoring well covers but did not conduct a thorough inventory to obtain an accurate
count of wells. According to Town of Addison Fire Department drawings, dated February 28,2001, there are four fuel farms operated by six operators, Mercury Air, Million Air, Addison
Air, Stern Air, R. Stern, and Cherry Air. However, current airport management personnel indicate that only Million Air, Mercury Air, Addison Air, and Cherry Air are currently operating
tanks at the airport. The Fire Department drawings indicate that four fuel areas, termed Fuel Areas #1 to #4, are located at the airport. Therefore, including the suspected area observed
by Washington. there are five Fuel Areas at Addison Airport that will be included in the project. . Technical Approach and Project Overview The objective of this project is defined to
obtain sufficient data to delineate the extent of contamination at the Fuel Farm area. Our technical approach consists of a combination of documents analysis. interview.!!! with knowledgeable
persons, and invasive field exploration. The objective will be to establish anLmderstanding of the environmental and physical conditions of the tank farms and adjacent areas at the airport.
We will review regulatory documents and conSUltants' reports, speak with airport operations personnel and private operators. conduct subsurface soil vapor analysis, and conduct soil
and groundwater sampling and analysis. Scope of Work The scope of work consists of six tasks. Tasks 1 through 4 are necessary to establish the areal extent of subsurface contamination.
Tasks 5 and 6 are related to additional data gathering activities to further quantify the extent and level of potential contamination in the soil and groundwater. The tasks detailed
below will be managed by a TNRCC-registered Corrective Action Project Manager under the employ of Washington. Washington is a Registered Corrective Action Specialist. The tasks will
be conducted in accordance with a project-specific Health and Safety Plan (HSP) that we will develop after given Notice To Proceed and before conducting fieldwork. We will forward the
HSP to the Town for review and approval. Task 1 -Soil Vapor Survey. Washington will oversee the execution of a soil vapor survey that will encompass the four known Fuel Areas and the
fifth suspected Fuel Area. We will retain the services of Exploration Technologies, [nc., (ETI) to conduct the survey. ETI specializes in soil vapor surveys and is highly regarded by
both the regulated and regulatory communities for their work. 
Mr. James Pierce, Jr., P.E. Thursday, December 13, 2001 Page 3 , ' The work plan includes the collection of up to 80 soil vapor samples on a grid spacing containing approximately 40
feet between sampling locations. The number of samples required to evaluate the area on this grid spacing is based on a COM map (Figure 2, dated 214/98) supplJed to ETI. The modified
COM map showing the proposed soil vapor sample locations is attached. The locations of individual samples may be adjusted in the field during field operations to allow for buildings,
piping, utility chases, etc. The proposed locations of the soil vapor samples are on the airport property and do not go off site into the Addison Road right-of-way (ROW) or other properties.
Based upon the results of this survey, infill (higher density) or off-site sampling can be performed in anomalous parts of the study area (if required to better delineate the plume(s»;
costs have not been included for infill or off-site sampling and would only be conducted with Town Town approval. For sampling in the Addison Road ROW or other properties, we would require
Town permission andlor assistance gaining access for sampling those locations. Soil vapor samples will be collected from depths of four feet using ETl's proprietary collection system.
At each sampling location, a field blank (ambient air) sample will be collected through the sampling probe into an evacuated 125-cc septum top glass bottle prior to inserting the probe
into near-surface soils. Following the collection of the blank, a manually operated }1.-inch 00 steel pounder-bar will be advanced to a depth of four feet below ground surface. Upon
removal of the pounder-bar, a }1.-inch 00 stainless steel sampling probe with a perforated tip will be inserted into the sampling hole. After purging the probe of ambient air, an evacuated
125-cc septum top glass bottle will be placed on a needle affixed to a three-way valve on the top of the probe to collect the soil vapor sample. Following collection of the sample, the
bottle will be removed from the needle and the puncture hole in the septum will be sealed with a silicone rubber adhesive sealant. All samples will be recorded on chain of custody logs
immediately following collection. The steel pounder-bar will be washed with a biodegradable soap solution and rinsed with tap water prior to collecting a soil vapor sample at each location.
The stainless steel sampling probe will be similarly washed outside, and inside by injecting the biodegradable soap solution (through the probe) followed by a water rinse. The probe
will be then flushed internally with compressed breathing air for 10 seconds at a pressure of about 25-psi. Vapor samples will be analyzed (screened) in the field during sample collection
for methane, carbon dioxide, and oxygen using an infrared gas analyzer. The results of these analyses will aid the field crew in adjusting the sampling grid (if necessary) and determining
the location(s) of possible "hot spots" during sample collection. . All soil vapor samples will be analyzed in ETl's Houston, Texas laboratory utilizing standard QAJQC procedures. Samples
will be analyzed for C1-C4 (methane, ethane, propane, and butanes) and C5+ (pentane-xylenes+) hydrocarbons using two flame ionization detector (FlO) gas chromatographs. The FlO gas chromatograph
utilized for C5+ hydrocarbon analyses contains a capillary column, allowing for high resolution (and separation) of individual compounds (such as BTEX, etc.) and identification of specific
product signatures. Our project price does not include the additional cost for the high
Mr. James Pierce, Jr., P.E. Thursday, December 13, 2001 Page 4 > • resolution capillary analyseslinterpretation; however, the chromatograms will be archived in the event specific samples
require additional review at a later date. Results of the C1-C4 and C5+ analyses will be tabulated and presented in parts per million by volume (ppmv). Soil vapor samples will also be
analyzed for carbon dioxide (C02) using a gas chromatograph equipped with a thermal conductivity detector (TCD). Results will be reported in percent (%) by volume. When petroleum hydrocarbon
products are released to subsurface soils and/or groundwater, biodegradation of the hydrocarbon compounds commonly occurs. The degradation of hydrocarbon compounds by aerobic and/or
anaerobic bacteria can generate significant concentrations of carbon dioxide and/or methane in the subsurface environment. Measurements of methane and C02, therefore, provide additional
site-specific information regarding the presence of hydrocarbon compounds, and the likelihood and degree to which intrinsic bioremediation (both aerobic and anaerobic) occurs in the
subsurface environment. Hydrocarbon and biogenic gas constituent concentrations will be tabulated and utilized to construct various contoured plume maps delineating the areal extent
of individual constituents. Each map will include the specific constituent concentrations at all sampling locations. Areas (between contour lines) within the respective plumes will be
color-coded based upon the concentrations of the respective hydrocarbon or biogenic gas constituent. These colored plume maps will graphically depict the boundaries of the contaminant
plume, as well as the "hot spot(s)" and concentration gradients within the contaminated area. Using the various constituent plume maps, conclusions will be formulated regarding source
area(s), plume configuration, and migration pathways. The plume maps accurately exhibit the areal extent of the subsurface contamination, and are invaluable in determining locations
for drillinglinstallation of bore holes and/or monitoring wells necessary to define the vertical extent ofthe contamination. ETI will prepare a report including tabulated data, colored
plume maps for the various hydrocarbon/biogenic gas constituents, and an interpretation of the data/maps. The work program will require up to five field days, based upon the map supplied
to ETI. Washington personnel will coordinate with the Town for clearing and marking all utilities and obtaining permission to collect samples on properties and/or right-of-ways included
in the survey area (if applicable) prior to the commencement offield activities. Task 2 -Push Probe Soil Sampling. Based on records of soil conditions at the airport it is anticipated
that push probe technology will be adequate for the collection of subsurface soil samples. If during implementation of this task it is found that site-specific conditions are not conducive
to push probe boring, it will be necessary to reevaluate this sampling program using hollow-stem auger techniques. Hollow-stem auger is a more costly technique, therefore yielding fewer
samplinglocations. We will conduct a one-day push probe boring program, following the soil vapor survey, to collect soil samples for analysis and evaluate the viability of push probe boring
program in the predominant lithology (limestone and weathered limestone) of that area. We will attempt to bore as many locations as possible during the day of operation. Borings will
be pushed until achieving bedrock refusal or a maximum of 25 feet. Final depths of each borings will be determined in the field based on visual observation, olfactory 
Mr. James Pierce, Jr., P.E. Thursday, December 13,2001 Page 5 .' sensation, and soil sample headspace analysis with a portable vapor analyzer. Samples will be collected continuously,
with a maximum of 10 samples selected for analytical testing. If groundwater is encountered, a maximum of fNe (5) groundwater samples will also be collected for analysis. Both the soil
and groundwater samples will be tested only for BTEX (benzene, toluene, ethyfbenzene, and total xylenes) and TPH (total petroleum hydrocarbons). Push probe boring locations will be based
on qualitative results from field screening during the soil vapor survey. Based on the data we will recommend to the Town the preferred drilling method for Task 5. We will place soil
samples in laboratory-cleaned glass jars with appropriate labels and place them in an ice-filled chest for transport to our laboratory. Chain-of-custody documents will accompany the
samples. All sample handling equipment will be decontaminated between soil sample intervals. After boring completion, we will grout all borings with cement, bentonite, or other acceptable
material to inhibit stratigraphic cross contamination. Drilling and sampling wastes will be collected in drums for later characterization testing and proper disposal. Costs to conduct
the characterization testing, identification of a suitable disposal firm, disposal costs, and waste manifesting on behalf of the Town have not been included in this cost proposal. The
Town may elect to conduct this activity itself. Task 3 -Documents Review. Site Reconnaissance. and Personnel Interviews. The CDM Phase I ESA Update report of February 1, 2001, cites
their own previous Phase I ESA report and leaking registered storage tank files maintained by TNRCC. We will attempt to gather these documents and any others that the Town indicates
may be useful for understanding the historical and current conditions of the Fuel Areas. We will conduct a detailed site reconnaissance to document visually observable conditions of
the Fuel Area to identify possible mechanical, electrical, and chemical hazards; equipment locations, orientations, and dimensions; and operational parameters, such as fueling. We will
also interview the tank operators currently operating at the airport to obtain their understanding of the tanks and operational issues. The purpose of gathering these data is not to
conduct an audit to evaluate compliance with Texas Natural Resource Conservation Commission (TNRCC) regulations but rather to help understand the magnitude of environmental media (soil,
sediment, surface water, groundwater) contamination and site-specific arrangements. We will also use the data to evaluate the need for further field exploration to assess the extent
and . magnitude of environmental media contamination. However, if the data indicate obvious non-compliance with TNRCC regulations (e.g. reporting requirements, overfill protection. tank
inventory practices, etc.), we will document the apparent non-compliance(s) and report it to the Town, but that is secondary to the effort to understand the current conditions. Our objective
is to identify the following items, including but not limited to: • Historical fuel spills, leaks, and response actions, tank tightness testing, including engineered remediation systems
• Tank dimensions, orientation. contents, mechanical condition (integrity), materials of construction, and all the aforesaid for piping and ancillary equipment 
Mr. James Pierce, Jr., P.E. Thursday, December 13, 2001 Page 6 , . • Operational data for hours of operation (times of day), refueling frequencies, fuel suppliers, and safety considerations
Task 4 -Report. We will compile the information from Task 1 through Task 3 into a report that documents the methods of data gathering, summarizes the primary findings, and provides conclusions
and recommendations for the later tasks. We will include supporting documents such as the ETI report, TNRCC file data, interview conversation logs, figures, and other supporting documents,
as appropriate. We will provide four copies of the report. Task 5 -Soil Borings and Monitoring Well Installation. Based on the results presented to the Town in Task 4, we will develop
a soil bOring and monitoring well program designed to complete the delineation of the laterel and vertical extent of contamination within the weathered subsurface. This program does
not take into account assessing the extent of contamination in the underlying bedrock formation, if present. This information will be combined with the horizontal boundary data from
the soil vapor survey to define the extent of contamination. This program will be conducted only after consultation with and prior approval ofthe Town. The preferred soil boring method
is push probe drilling. This program is developed on the assumption that the subsurface stratigraphy will be conducive to push probe boring. However, if push probe borings appear infeasible,
hollow-stem drilling may be necessary, and will be conducted in conjunction with installation of the monitoring wells. Ten (10) push probe borings will be strategically located based
on the results ofthe soil vapor survey. As in the previous boring task, soil samples will be collected and logged continuously to a maximum depth of 25 feet or until bedrock refusal.
Actual depths of borings will be determined in the field based on visual observation, olfactory sensation, and soil sample headspace analysis with a portable vapor analyzer. We will
document soil type, groundwater, evidence of contamination, and other pertinent information on soil boring logs and a field notebook. One soil sample will be selected from each boring
location for BTEX and TPH analysiS. Five (5) samples will be selected for polyaromatic hydrocarbon analysis (PAH). In-situ groundwater samples will be selected at five (5) push probe
boring locations and analyzed for BTEX and TPH. We will place the soil samples in laboratory-cleaned glass jars with appropriate labels and place them in an ice-filled chest for transport
to our laboratory. Chain-of-custody documents will accompany the samples. All sample handling equipment will be decontaminated between soil sample intervals. After boring completion,
we will grout all borings with cement, bentonite, or other acceptable material to inhibit stratigraphic cross contamination. Drilling and sampling wastes will be collected in drums for
later characterization testing and disposal. If groundwater is encountered, we will install and sample up to six (6) monitoring wells to bedrock refusal, or a maximum depth of 25 feet.
Hollow-stem auger techniques will be required for monitoring well installation. The locations will be determined using the soil vapor data and the soil boring data to optimize the locations,
taking into account hydrogeologic and contamination considerations. Actual depths will be determined in the field based on stratigraphy and the depths of hydrocarbon-impacted zones.
We will 
·Mr. James Pierce, Jr., P.E. Thursday, December 13, 2001 Page 7 construct the wells with 2-in. 10, flush-joint-threaded, Schedule PVC, using 0.010-in. slotted casing. Filter pack sand
will be placed around the well screen, followed by a bentonite seal and grout to surface. The wells will be flush-mounted relative to ground surface with a protective, locked cover.
We will develop the wells to remove cuttings and sediments that could affect hydraulic communication between the well screen and the formation fluids. After well development, we will
purge the wells of stagnant water and collect groundwater samples for analytical testing. Groundwater collected from the monitoring wells will be analyzed for BTEX, TPH, and PAH. We
will place groundwater samples in laboratory-cleaned glass jars with appropriate labels and place them in an ice-filled chest for transport to our laboratory. One method blank, a duplicate,
and a trip blank to evaluate cross contamination will be included with each sample lot for QA/QC control. Chain-ofcustody documents will accompany the samples. Sample handling eqUipment
will be decontaminated between wells. Sampling wastes will be collected in drums for later characterization testing and disposal. Upon completion of soil boring and monitoring well installation
we will retain a Registered Public Land Surveyor (RPLS) to locate all the newly-installed wells and borings. The survey will provide an elevation relative to a local benchmark to provide
accurate vertical and horizontal control data that will be necessary for subsequent hydrogeologic characterization. The RPLS will provide a digitized drawing and electronic file in AutoCAD
for use in our reports. Task 6 -Final Report and Recommendations. We will develop a report using TNRCC standardized forms, where required, that are mandatory under their LPST program.
These reports include field activity reports, well monitoring reports, site investigation reports, correspondence forms, and others, as appropriate. The final report will incorporate
all the data collected from the earlier tasks and include a recommendation directed toward natural attenuation as the preferred remedial alternative. We will also include in the report
an estimated cost, +/-30% to 40%, on what the Town could expect for bringing the site to closure under a natural attenuation scenario. However, it is our experience that the TNRCC may
require additional information before agreeing to a natural attenuation alternative. Schedule Upon receipt of both a signed Work Authorization and Notice to Proceed (NTP), we will begin
preparations to mobilize to the site to begin Tasks 1 and 2. We will complete the fieldwork for Tasks 1 and 2 within two weeks of notification, followed by another two weeks to allow
for completion of the ETI report. Task 3 will begin the week of receipt of the NTP and will be completed within three to four weeks, depending on availability of documents and knowledgeable
persons. We will complete Task 4 two weeks after completion of Tasks 1 through 3, for a total duration of about six weeks after NTP. The schedule for Tasks 5 and 6 will be developed
after consultation with the Town; however, we anticipate that Task 5 borings and monitoring wells could begin within two weeks of submission of the Task 4 report, if the Town chooses
to move quickly. We estimate the entire process from initiation of Task 1 to completion of the Task 6 report to be 3 to 4 months. 
Mr. James Pierce, Jr., P.E. Thursday, December 13, 2001 Page 8 , ' !3 􀁾􀀠Price //This section fl sents!(1) a Lump Sum price for Tasks 1 through 4, work that we have confidence s a .,rery
well defined scope and (2), Time and Materials estimated prices for Tasks 􀁾􀁡􀁮􀁤(§) work where the defined scope may change based on the results of earlier tasks and uncertainties
in site subsurface conditions. However, we have attempted to provide reasonable scopes of work for the Time and Materials estimated prices based on experience and generally accepted
scientific and engineering practices. The Lump Sum price to conduct Task 1 through Task 4 as one program is $42,500. This price includes provisions for a Kickoff Meeting with the Town
attended by the Washington Project Manager, the Washington Client Coordinator/Airport Engineer, and the Washington Field Manager. The Lump Sum price has been developed based on the following
assumptions: 1. Washington-Staubach, the Town's airport management agent, will provide unrestricted access to Fuel Areas and will provide notification to tank operators of our intent
to conduct work in those areas and to conduct interviews of operational personnel. Town will make good-faith efforts to provide relevant documents in its possession or within its ability
to obtain and will assist Washington in its efforts to obtain relevant documents from others. 2. Town will make a good faith effort to identify locations of their buried utility lines.
Washington-Staubach will make a good faith effort to identify other utility lines or other buried objects in the Fuel Areas for Washington. It is common for the identification of buried
utilities and objects to take many days by the time personnel, equipment, maps, and the field visit are completed. Because of this, it is critical to our schedule that all entities identify
their known buried utilities before mobilization. Provisions have been made to use geophysics to identify unknown buried objects. 3. Prices include costs related to routine project meetings
and discussions or meetings with the Town. However, the prices include a reasonable timeframe for progressive completion of the tasks without extensive delays between tasks beyond the
control of Washington. 4. Prices have been developed on standard 8-hour workdays, 40-hour weeks, assuming normal, nationaUy recognized holidays with no provision for overtime. A summary
of estimated prices for the work proposed in Tasks 5 and 6, and total estimated cost for aU tasks is presented in Table 1 below. These prices are presented as Time and Materials. Table
2 presents the rates used in estimating Tasks 5 and 6, and would apply to any change orders requested by the Town. 
Mr. James Pierce, Jr., P.E. Thursday, December 13, 2001 Page 9 , ' Task 5 -Borings/Welis/AnalyticallSurvey Task 6 -Report $23,900. $15,400. Total for Tasks 5 and 6 $39,300. Total for
Tasks 1 through 6 $81,800. Notes: (1) A 10% contingency has been included to account for changes in labor rates, inflation, and other unforeseeable circumstances. (2) includes 10% markup
on expenses. 70.Ron Forest CADD Clerical/SecretarialVarious 50. Various Field Technician 35. Chamberlain Field lIn"n",,.',r 70. For the same reason as stated for labor, Tables 3 and
4 present unit rates for Task 5 push probe boring and monitoring wells, and analytical costs for the proposed program, respectively. Hollow-Stem Auger Boring, 25-ft depth $221ft (25
ft minimum) Direct Push Boring $1700/day Monitoring Well, 25-ft depth, 2-in. ID PVC $40/ft (25 ft minimum) 
Mr. James Pierce, Jr., P.E. Thursday, December 13, 2001 Page 10 > ' Total Petroleum Hydrocarbons (TPH) Polynuclear Aromatic Benzene, Toluene, Ethylbenzene, Xylene (BTEX) EPA 8270 -140.
EPA 8020 or 8260 45. Scope ofWork Acceptance If you accept this scope of work, please sign below or forward us a Signed Purchase Order or similar authorizing document that references
this Scope of Work. Closing Remarks We are pleased to have this opportunity to serve the Town of Addison and to demonstrate our breadth of capabilities. We look forward to working with
you. Sincerely, WASHINGTON GROUP INTERNATIONAL TNRCC RCAS 00169 &f/f 􀁦􀁴􀀭􀁾􀀠Manager of Environmental Services TNRCC CAPM00385 Accepted 􀁂􀁙􀁾􀀭􀀮􀀭􀁊􀀯􀁌􀁾􀁾􀁉􀁾􀁗􀁾􀁌􀁪􀁾􀁾􀀢􀀬􀀽􀀹􀁾􀁟􀀧􀀡􀀡􀀧􀀼�
�􀀡􀀺􀀡􀀽􀀡􀀽􀀺􀀡􀁉􀁾􀀺􀀮􀁤􀀮􀀮__ Ron Whitehead City Manager Date: Attachments: Soil Vapor Sample Location Work Authorization Terms 
, .WORK AUTHORIZATION TERMS L The work shall be as described in the Washington Group International, Inc. ("Washington") proposed Scope of Work referenced on the face hereof. 2. Unless
otherwise agreed in writing, Client shall pay Washington for the work on the basis described in Washington's Scope of Work. Payment shall be due within thirty (30) days of invoice. Payment
not received within such time period will be subject to interest of 1% per month for the unpaid balance. 3. Confidentiality obligations related to the work, if any, shall be as set forth
in such confidentiality agreements as may be concluded between the parties. 4. (a) During the work, Washington shall maintain the following insurance: (1) Workers Compensation insurance
at statutory limits, including Employers' Liability coverage at minimum limits 0[$1,000,000 each-occurrence each-accident/$I,Ooo,OOO by disease each-occurrencei$I,OOO,OOO by disease
aggregate. (2) Commercial general liability insurance, including broad form contractual coverage, for bodily injury, death and properlY damage, and particularly for liability arising
from premises, operations independent contractors, products/completed operations, personal injury, advertising injury, and contractual liability (including, without limitation, the liabiliry
assumed under the indemnity provisions ofthis Agreement) in the following amount: $1,000,000 each-occurrence, CSUS2,000,000 general aggregate; $1,000,000 Products/Completed Operations
aggregate. If such CGL insurance contains a general aggregate limit, it shall apply separately to the work under this Agreement. Provided, bowever, that ifthe Addison Allport commercial
general liability insurance currently in place for the benefit of Washington Staubach Addison Airport Venture (as the manager and operator of the Addison Airport) specifically insures
Washington for its liability under this Agreement, then such insurance may be accepted by the Town ofAddison in lieu ofthe separate commercial generaJ liability insurance described above.
(3) Commercial Automobile Liability insurance at minimum combined single limits of $1,000,000 per-occurrence for bodily injury and property damage, including owned, nonowned and hired
car coverage. (4) Professiona1liability Insurance to protect from liability arising out of the performance of professional services under this contract. Such coverage shall be in the
sum of not less than Two Million and NO/loo Do\1ars ($2,000,000.00), and shall be extended to include and eaver environmental Jega1liability. The environmentallega1liability insurance
to include coverage for third-party bodily injury and property damage (on and off-site). The environmental legal liability insurance shall also include clean-up, remediation, restoration
costs, and other related costs and expenses. Both the professional and the environmenml legal liability insurances shall be continuously in place during the full term ofthis Agreement,
including any extensions or renewals thereof, and for a period of at least two (2) years after final termination of this Agreement. If this coverage is claims-made, the policy retro
date shall be set and maintained not later than the inception date of this Agreement. Separate policies may be maintained for professional liability and environmental legalliabllity
in the event they cannot be comhined in one policy. 
, .The above policies sball be endorsed to provide the following, as applicable: (i) in all liability policies, name as additional insureds the Town ofAddison, Texas, and its officials,
officers, agents, and employees, (ii) sball contain deductibles and exclusions acceptable to the City; (iii) in all liability policies, provide that such policies are primary insurance
to any other insurance available to the additional insureds, with respect to any claims arising out ofactivities conducted hereunder, and that insurance applies separately to each insured
against whom a claim is made or suihs brought; and (iv) a waiver ofsubrogation in favor of the Town ofAddison, Texas must be included in all liability and workers compensation policies.
All insurance policies sball be issued by an insurance company with an A.M. Best's rating ofnot less than A-authorized to do business in Texas and satisfactory to the Town ofAddison,
Texas and in the standard form approved by the Texas Department ofInsurance, and sball be endorsed to provide for at least 30 days advance written notice to the Town of Addison of a
material change in, cancellation, or non-renewal ofa policy. Certificates ofinsurance, satisfactory to the Town of Addison, evidencing all coverage above, shall be furnished to the Town
ofAddison prior to the inception date oflhis Agreement. The Town of Addison reserves the right to review and revise from time to time the types ofinsurance and limits ofliability required
herein. (b) Washington shall defend and indemnify the Town of Addison, Texas, its officials, officers, employees and agents (together, for purposes of this section, the "Town") against,
and hold hannless the Town from, any and all liability, actions, causes of action, lawsuits, judgements, clans, damages, costs or fees, including attorney's fees and cost of defense,
for personal injury, property damage or destruction (including without limitation of loss of use of property not otherwise physically injured), breach of contract, or other hann for
which recovery of damages is sought, suffered by any person or organization that may arise out of any negligent, grossly negligent, or willful act or omission of Washington, its officers,
employees, contractors or agents under this Agreement. The provisions ofthis paragraph shall survive the expiration or termination of this Agreement. (c) The work to be undertaken by
Washington is at the Addison Airport fuel fann site, where aviation fuel and other products and materials (some of which may be hazardous) are stored and used for aviation purposes.
However, in the event that unknown, unanticipated or unsuspected hazardous materials are discovered on or near the project site, Washington shall have the right to stop all work thereon
immediately until (i) all proper authorities are notified, and all applicable laws, rules or regulations have been complied with, and (ii) if the scope of the work is increased from
that originally anticipated under the terms ofthis Contract, the increased scope of the work and the fees to be paid as a result thereof have been accepted by Client and Washington in
writing. In such an instance, Client shall have the right to terminate this agreement and Washington shall be compensated for all work properly perfonned to the point of termination
(and Washington shall promptly give to Client all records, reports, documents and all other materials or infonnation (in whatever fonnat, whether electronic or otherwise) prepared or
collected by Washington to the time of such tennination). In the event that the discovery of unanticipated hazardous materials requires Washington to take immediate measures to protect
health and safety, or to comply with applicable laws, rules or regulations, Client agrees to compensate Washington for expenses incurred in taking such action, including, but not limited
to, expenses incurred for equipment decontamination and all other costs incident to the discovery, treatmcnt andlor disposal of the hazardous waste, except to the extent that such expenses
Or costs result from the negligence, gross negligence, or willful act or omission of Washington. Washington shall immediately notify Client of its discovery of any unanticipated hazardous
materials. 
5. Any delay or failure of Washington in the performance of its required obligations hereunder' ' shall be excused if and to the extent eaused by acts of God, strike, acts of workman,
fIre, storm, flood, windstorm, discovery or uncovering ofhazardous or toxic materials or historical artifacts at the project site, delays occasioned by Client's preconstruction approval
or permitting activities, unusually severe weather, sabotage, embargo, wreck or delay in transportation, accidents in the handling and rigging of heavy equipment, explosion, riot, war,
court injunction or order, delays by or acts or orders of any governmental body or changes in laws or governmental regulations, acts or omissions of the Client or its other contractors
or any other cause or eauses beyond the reasonable control of Washington provided that prompt written notice of such delay or suspension be given by Washington to the Client. Upon receipt
of said notice, if necessary, the time for performing shall be extended for a period of time reasOl1llbly necessary to overcome the effect of such delays and Washington shall be reimbursed
for the cost, ifany, ofsuch delays ifsuch delays are caused directly by the Client. Washington shall perform its work hereunder in accordance with that degree of care and skill ordinarily
exercised by members of the engineering profession existing as of the date that such services are performed. All reports, documents, drawings, designs, plans, or specifications made,
prepared, or collected by Engineer in connection herewith belong to and remain the property of Client. Client shall be furnished with such reports, documents, drawings, designs, and
specifications and reports. 6. The parties agree that the laws of the State of Texas shall apply to the interpretation, validity and enforcement of this Agreement; and, with respect
to any conflict of law provisions, the parties agree that such conflict of law provisions shaH not affect the application of the law of Texas (without reference to its conflict of law
provisions) to the interpretation, validity and enforcement of this Agreement. This Agreement has been executed and delivered in the State of Texas and the Validity, enforceability and
interpretation of any of the clauses of this Agreement shall be determined and governed by the laws of the State of Texas. All duties and obligations of the parties created hereunder
are performable in Dallas County and such County shall be the venue for any action or proceeding that may be brought or arise out of, in connection with, or by reason ofthis Agreement.
7. (a) Termination without cause. Either party may terminate this Agreement at any time by giving to the other party at least 30 days written notice of such termination. Termination
shall have no effect upon the rights and obligations of the parties arising out of any transaction occurring prior to the effective date of such termination. In the event of termination,
all finished or unfInished data, studies, reports and other materials and items (whether kept electronically, in writing, or otherwise) prepared or assembled by Washington shall be promptly
delivered to Customer. Washington shall he paid for all work satisfactorily completed prior to the effective date of said termination. (b) Termination with cause. If Washington fails
to perform Washington's duties to the satisfaction of the Customer, or if Washington fails to fulfill in a timely and professional manner Washington's obligations under this Agreement,
or ifWashington shall violate any of the tenns of provisions of this Agreement, then Customer shall have the right to terminate this Agreement effective immediately upon the Customer
giving written notice thereof to Washington. Termination shall have no effect upon the rights or obligations of the parties arising out ofany transaction occurring prior to the effective
date of such termination. In the event oftermination, all finished or unfinished data, studies, reports and other items (whether kept electronically, in writing, or otherwise) prepared
or assembled by Washington shall be 
promptly delivered to Customer. Washington shall be paid for all work satisfactorily' . completed prior to the effective date ofsaid termination. 8. Inasmuch as this Agreement is intended
to secure the specialized services of Washington, Washington has no authority or power to and may not assign, transfer, delegate, subcontract or otherwise convey any interest herein
without the prior written consent of Customer, and any such assignment, transfer, delegation, subcontract or other conveyance without the Customer's prior written consent shall be considered
null and void. 9. All payments, notices, demands, or requests from one party to another shall be personally delivered or sent by United States mail, postage prepaid, to the addresses
below: To Customer: To Washington: 16801 Westgrove Road 1250 W. Sam Houston Parkway South Addison, Texas .75001-5190 Houston, Texas 77042 Attn: Jim Pierce Attn: Paul Wild Tel; 972-450-2879
Tel: 281-529-8939 Fax: 972-450-2837 Fax: 281-529-8966 
c:::::>-N--c::::::I> • .. t, ,.,-; . .. • R. STERN F U ELFARM S -')I-IH/U't:'!''1rJPM Fn;',:itENLARGED PLAN o /.€I)/(JSbD 􀁓􀀺􀁾􀀯􀁌􀀠WII'M 􀁓􀁉􀀱􀁉􀁙􀀱􀁾􀀠/'1/1 . I , ," /! 􀁛􀁾.. I'll
, I Ii 
/ifJeI Item #R3 -PUBLIC HEARING and consideration of an Ordinance changing the zoning from a Planned Development District to a Revised Planned Development District that includes residential
uses, located on 30.72 acres at the southeast corner of Belt Line Road and the Dallas North Tollway, on application from KS Development, representedby Mr. Sam Ng. Administrative Comment: The applicant is working on revised plans. The Council should continue the public hearing on this item until the January 8, 2002 Council meeting.
Item#R4-Consideration of a Resolution authorizing the City Manager to enter into a contract in an amount not to exceed $81,800.00 with Washington Group International to conduct Phase
II Environmental Assessment of the Addison Airport Fuel Farm. Attachments: 1. Council Agenda Item Overview 2. Proposal 3. Figure 4. Work Authorization Terms Administrative Recommendation:
Administration recommends approval. Item#R5 Consideration of a Resolution authorizing the City Manager to award incentive compensation to Washington Staubach Addison Airport Venture.
Attachments: 1. Council Agenda Item Overview 2. Staff Recommendations 3. Memorandum from Randy Moravec 4. FAA Letter 5. Exhibit 3 Administrative Recommendation: Administration recommends
approval. City Council Agenda 12-11-01 
DATE SUBMITTED: December 4, 2OIl1 FOR COUNCIL MEETING; December 11, 2001 Council Agenda Item: _____ SUMMARY: This Item is to award a contract to conduct a Phase nEnvironmental Assessment
ofthe Addison Airport Fuel Fann, FINANCIAL IMPACT: Funds Available: $85,000 Cost: $81,800 Funding Source: Airport Fund BACKGROUND: The Airport Phase I Environmeutal Assessment Update
of the Airport that was completed in August 2001 by Camp, Dresser and McKee, recommended that a Phase n Environmental Assessment be performed on the Airport Fuel Fann, The purpose of
a Phase nis to determine the extent ofsoil and groundwater contamination, ifany, as a result of operations at the fuel farm, The Town solicited statements ofqualifications from interested
finns, and received ten responses, The Town evaluated the responses and selected Washington Group International to submit a proposal to do the work. A copy ofWashington's proposal is
attached, RECOMMENDATION: Staff recommends that the City Manager be authorized to contract with Washington Group International for Tasks I through 4 for a lump sum amount of $42,600,
and fur Tasks 5 and 6 on a time and materials basis, for a total amount not to exceed $81,800, 
·GWashington IIIIIus1tfal/1'mcl1llll November 30, 2001 WGI Proposal No. 80805-1 (Rev.2) QP&ES 01-E005 Mr. James C. Pierce, Jr., P.E. Assistant Director of Public Works Town of Addison
P.O. Box 9010 Addison, Texas 75001-9010 PROPOSED SCOPE OF WORK FOR PHASE II ENVIRONMENTAL SITE ASSESSMENT ADDISON AIRPORT FUEL FARM ADDISON, TEXAS Dear Mr. Pierce: Presented here is
Revision 2 of our proposed scope of work for the Phase II Environmental Site Assessment of the fuel farm at Addison Airport in Addison, Texas. This proposed scope of work is submitted
in accordance with our conversation on August 20, 2001, as authorized by the notice of award from the Town of Addison to Washington Group International, dated August 15, 2001, and subsequent
letters and conversations. This proposal supercedes any previous proposals or revisions. Background The Town of Addison retained Washington-Staubach to provide management services at
Addison Airport beginning January 2001. Another entity managed the airport before 2001 under a lease agreement with the Town. As part of the Town's contract with Washington-Staubach,
the Town will establish current, baseline conditions in the subsurface in the fuel farm area, specifically the presence or absence of hydrocarbon contamination. The baseline data will
be provided to Washington-Staubach so they can develop, in concert with the Town, a compliance strategy suitable for the fuel farm that is based on an understanding of current conditions.
This proposed scope of work is designed to address the Town's need to establish these baseline environmental conditions at the fuel farm and to develop a compliance strategy. Site Location
and Description Addison Airport, located in Addison, Texas, has several fuel farms located in the southeastern comer of the airport. From the best information available, and according
to a Phase I Environmental Site Assessment Update developed by Camp Dresser & McKee (COM), there are 29 registered Underground Storage Tanks (USTs) and one unregistered above-ground
storage tank located at the airport. Fifteen of these USTs are currently inactive. The remaining 14 active USTs and the above-ground storage tank must remain in-service until a new bulk
fuel storage and dispensing facility has been constructed or 1250W" Sam Houston Pkwy. S. Houston, TX n042 • P.O. Box 1291 Houston, TX 􀀷􀀷􀀲􀀵􀀱􀁾􀀱􀀲􀁡􀀱􀀠• Phone: (2S1) 529-3{JOO •
Fax: (281) 529-8966 WINI.wgintcom 
'Mr. James Pierce, Jr., P.E. November 30, 2001 Page 2 suitable temporary altematives are available. There is also concem that additional unregistered aboveground and underground fuel
storage tanks may be on the airport property. During an April 11 , 2001 inspection of the fuel farm areas, Washington personnel observed another area suspected to have once contained
a UST with associated fuel lines that is not documented in the Phase I Update report, This area shows surface evidence of the previous presence of a tank and associated fuel lines. It
is located north across the driveway from Fuel Area #1. Washington personnel also observed several monitoring well covers but did not conduct a thorough inventory to obtain an accurate
count of wells. According to Town of Addison Fire Department drawings, dated February 28, 2001, there are four fuel farms operated by six operators, Mercury Air, Million Air, Addison
Air, Stem Air, R. Stem, and Cherry Air. However, current airport management personnel indicate that only only Million Air, Mercury Air, Addison Air, and Cherry Air are currently operating
tanks at the airport. The Fire Department drawings indicate that four fuel areas, termed Fuel Areas #1 to #4, are located at the airport. Therefore, including the suspected area observed
by Washington, there are five Fuel Areas at Addison Airport that will be included in the project. Technical Approach and Project Overview The objective of this project is defined to
obtain sufficient data to delineate the extent of contamination at the Fuel Farm area. Our technical approach consists of a combination of documents analysis, interviews with knowledgeable
persons, and invasive field exploration. The objective will be to establish an understanding of the environmental and physical conditions of the tank farms and adjacent areas at the
airport. We will review regulatory documents and consultants' reports, speak with airport operations personnel and private operators, conduct subsurface soil vapor analysis, and conduct
soil and groundwater sampling and analysis. Scope of Work The scope of work consists of six tasks. Tasks 1 through 4 are necessary to establish the areal extent of subsurface contamination.
Tasks 5 and 6 are related to additional data gathering activities to further quantify the extent and level of potential contamination in the soil and groundwater. The tasks detailed
below will be managed by a TNRCC-registered Corrective Action Project Manager under the employ of Washington. Washington is a Registered Corrective Action Specialist. The tasks will
be conducted in accordance with a project-specific Health and Safety Plan (HSP) that we will develop after given Notice To Proceed and before conducting fieldwork. We will forward the
HSP to the Town for review and approval. Task 1 -Soil Vapor Survey_ Washington will oversee the execution of a soil vapor survey that will encompass the four known Fuel Areas and the
fifth suspected Fuel Area. We will retain the services of Exploration Technologies, Inc" (ETI) to conduct the survey. ETI specializes in soil vapor surveys and is highly regarded by
both the regulated and regulatory communities for their work, 
Mr. James Pierce, Jr., P.E. November 30, 2001 Page 3 The work plan includes the collection of up to 80 soil vapor samples on a grid spacing containing approximately 40 feet between sampling
locations. The number of samples required to evaluate the area on this grid spacing is based on a COM map (Figure 2, dated 2/4/98) supplied to ETI. The modified COM map showing the proposed
soil vapor sample locations is attached. The locations of individual samples may be adjusted in the field during field operations to allow for buildings, piping, utility chases, etc.
The proposed locations of the soil vapor samples are on the airport property and do not go off site into the Addison Road right-of-way (ROW) or other properties. Based upon the results
of this survey, infill (higher density) or off-site sampling can be performed in anomalous parts of the study area (if required to better delineate the plume(s»; costs have not been
included for infill or off-site sampling and would only be conducted with Town approval. For For sampling in the Addison Road ROW or other properties, we would require Town permission
andlor assistance gaining access for sampling those locations. Soil vapor samples will be collected from depths of four feet using ETl's proprietary collection system. At each sampling
location, a field blank (ambient air) sample will be collected through the sampling probe into an evacuated 125-cc septum top glass bottle prior to inserting the probe into near-surface
soils. Following the collection of the blank, a manually operated Y,..inch 00 steel pounder-bar will be advanced to a depth of four feet below ground surface. Upon removal of the pounder-bar,
a %-inch 00 stainless steel sampling probe with a perforated tip will be inserted into the sampling hole. After purging the probe of ambient air, an evacuated 125-cc septum top glass
bottle will be placed on a needle affixed to a three-way valve on the top of the probe to collect the soil vapor sample. Following collection of the sample, the bottle will be removed
from the needle and the puncture hole in the septum will be sealed with a silicone rubber adhesive sealant. All samples will be recorded on chain of custody logs immediately following
collection. The steel pounder-bar will be washed with a biodegradable soap solution and rinsed with tap water prior to collecting a soil vapor sample at each location. The stainless
steel sampling probe will be similarly washed outside, and inside by injecting the biodegradable soap solution (through the probe) followed by a water rinse. The probe will be then flushed
internally with compressed breathing air for 10 seconds at a pressure of about 25-psi. Vapor samples will be analyzed (screened) in the field during sample collection for methane, carbon
dioxide, and oxygen using an infrared gas analyzer. The results of these analyses will aid the field crew in adjusting the sampling grid (if necessary) and determining the location(s)
of possible "hot spots" during sample collection. All soil vapor samples will be analyzed in ETI's ETI's Houston, Texas laboratory utilizing standard QA/QC procedures. Samples will be
analyzed for C1-C4 (methane, ethane, propane, and butanes) and C5+ (pentane-xylenes+) hydrocarbons using two flame ionization detector (FlO) gas chromatographs. The FlO gas chromatograph
utilized for C5+ hydrocarbon analyses contains a capillary column, allowing for high resolution (and separation) of individual compounds (such as BTEX, etc.) and identification of specific
product signatures. Our project price does not include the additional cost for the high
Mr. James Pierce, Jr., P.E. November 30, 2001 Page 4 resolution capillary analyses/interpretation; however, the chromatograms will be archived in the event specific samples require additional
review at a later date. Results of the C1-C4 and C5+ analyses will be tabulated and presented in parts per million by volume (ppmv). Soil vapor samples will also be analyzed for carbon
dioxide (C02) using a gas chromatograph equipped with a thermal conductivity detector (TCD). Results will be reported in percent (%) by volume. When petroleum hydrocarbon products are
released to subsurface soils and/or groundwater, biodegradation of the hydrocarbon compounds commonly occurs. The degradation of hydrocarbon compounds by aerobic and/or anaerobic bacteria
can generate significant concentrations of carbon dioxide and/or methane in the subsurface environment. Measurements of methane and CO2, therefore, provide additional site-specific information
regarding the presence of hydrocarbon compounds, and the likelihood and degree to which intrinsic bioremediation (both aerobic and anaerobic) occurs in the subsurface environment. Hydrocarbon
and biogenic gas constituent concentrations will be tabulated and utilized to construct various contoured plume maps delineating the areal extent of individual constituents. Each map
will include the specific constituent concentrations at all sampling locations. Areas (between contour lines) within the respective plumes will be color-coded based upon the concentrations
of the respective hydrocarbon or biogenic gas constituent. These colored plume maps will graphically depict the boundaries of the contaminant plume, as well as the "hot spot(s)" and
concentration gradients within the contaminated area. Using the various constituent plume maps, conclusions will be formulated regarding source area(s), plume configuration, and migration
pathways. The plume maps accurately exhibit the areal extent of the subsurface contamination, and are invaluable in determining locations for drillinglinstallation of bore holes and/or
monitoring wells necessary to define the vertical extent of the contamination. ETI will prepare a report including tabulated data, colored plume maps for the various hydrocarbonlbiogenic
gas constituents, and an interpretation of the data/maps. The work program will require up to five field days, based upon the map supplied to ETI. Washington personnel will coordinate
with the Town for clearing and marking all utilities and obtaining permission to collect samples on properties and/or right-of-ways included in the survey area (if applicable) prior
to the commencement of field activities. Task 2 -Push Probe Soil Sampling. Based on records of soil conditions at the airport it is anticipated that push probe technology will be adequate
for the collection of subsurface soil samples. If during implementation of this task it is found that site-specific conditions are not conducive to push probe boring, it will be necessary
to reevaluate this sampling program using hollow-stem auger techniques. Hollow-Hollow-stem auger is a more costly technique, therefore yielding fewer sampling locations. We will conduct
a one-day push probe boring program, following the soil vapor survey, to collect soil samples for analysis and evaluate the viability of push probe boring program in the predominant
lithology (limestone and weathered limestone) of that area. We will attempt to bore as many locations as possible during the day of operation. Borings will be pushed until achieving
bedrock refusal or a maximum of 25 feet. Final depths of each borings will be determined in the field based on visual observation, olfactory 
Mr. James Pierce, Jr., P.E. November 30, 2001 Page 5 sensation, and soil sample headspace analysis with a portable vapor analyzer. Samples will be collected continuously, with a maximum
of 10 samples selected for analytical testing. If groundwater is encountered, a maximum of five (5) groundwater samples will also be collected for analysis. Both the soil and groundwater
samples will be tested only for BTEX (benzene, toluene, ethylbenzene, and total xylenes) and TPH (total petroleum hydrocarbons). Push probe boring locations will be based on qualitative
results from field screening during the soil vapor survey. Based on the data we will recommend to the Town the preferred drilling method for Task 5. We will place soil samples in laboratory-cleaned
glass jars with appropriate labels and place them in an ice-filled chest for transport to our laboratory. Chain-of-custody documents will accompany the samples. All sample handling equipment
will be decontaminated between soil sample intervals. After boring completion, we will grout all borings with cement, bentonite, or other acceptable material to inhibit stratigraphic
cross contamination. Drilling and sampling wastes will be collected in drums for later characterization testing and proper disposal. Costs to conduct the characterization testing, identification
of a suitable disposal firm, disposal costs, and waste manifesting on behalf of the Town have not been included in this cost proposal. The Town may elect to conduct this activity itself.
Task 3 -Documents Review. Site Reconnaissance. and Personnel Interviews. The COM Phase I ESA Update report of February 1, 2001, cites their own previous Phase I ESA report and leaking
registered storage tank files maintained by TNRCC. We will attempt to gather these documents and any others that the Town indicates may be useful for understanding the historical and
current conditions of the Fuel Areas. We will conduct a detailed site reconnaissance to document visually observable conditions of the Fuel Area to identify possible possible mechanical,
electrical, and chemical hazards; equipment locations. orientations, and dimensions; and operational parameters, such as fueling. We will also interview the tank operators currently
operating at the airport to obtain their understanding of the tanks and operational issues. The purpose of gathering these data is not to conduct an audit to evaluate compliance with
Texas Natural Resource Conservation Commission (TNRCC) regulations but rather to help understand the magnitude of environmental media (soil. sediment, surface water, groundwater) contamination
and site-specific arrangements. We will also use the data to evaluate the need for further field exploration to assess the extent and magnitude of environmental media contamination.
However, if the data indicate obvious non-compliance with TNRCC regulations (e.g. reporting requirements, overfill protection, tank inventory practices, etc.), we will document the apparent
non-compliance(s) and report it to the Town, but that is secondary to the effort to understand the current conditions. Our objective is to identify the following items, including but
not limited to: • Historical fuel spills, leaks, and response actions, tank tightness testing, including engineered remediation systems • Tank dimensions, orientation, contents, mechanical
condition (integrity), materials of construction, and all the aforesaid for piping and ancillary equipment 
Mr. James Pierce, Jr., P.E. November 30, 2001 Page 6 • Operational data for hours of operation (times of day), refueling frequencies, fuel suppliers, and safety considerations Task 4
-Report. We will compile the information from Task 1 through Task 3 into a report that documents the methods of data gathering, summarizes the primary findings, and provides conclusions
and recommendations for the later tasks. We will include supporting documents such as the ETI report, TNRCC file data, interview conversation logs, figures, and other supporting documents,
as appropriate. We will provide four copies of the report. Task 5 -Soil Borings and Monitoring Well Installation. Based on the results presented to the Town in Task 4, we will develop
a soil boring and monitoring well program designed to complete the delineation of the lateral and vertical extent of contamination within the weathered subsurface. This program does
not take into account assessing the extent of contamination in the underlying bedrock formation, if present. This information will be combined with the horizontal boundary data from
the soil vapor survey to define the extent of contamination. This program will be conducted only after consultation with and prior approval of the Town. The preferred soil boring method
is push probe drilling. This program is developed on the assumption that the subsurface stratigraphy will be conducive to push probe boring. However, if push probe borings appear infeasible,
hollow-stem drilling may be necessary, and will be conducted in conjunction with installation of the monitoring wells. Ten (10) push probe borings will be strategically located based
on the results of the soil vapor survey. As in the previous boring task, soil samples will be collected and logged continuously to a maximum depth of 25 feet or until bedrock refusal.
Actual depths of borings will be determined in the field based on visual observation, olfactory sensation, and soil sample headspace analysis with a portable vapor analyzer. We will
document soil soil type, groundwater, evidence of contamination, and other pertinent information on soil boring logs and a field notebook. One soil sample will be selected from each
boring location for BTEX and TPH analysiS. Five (5) samples will be selected for polyaromatic hydrocarbon analysis (PAH). In-situ groundwater samples will be selected at five (5) push
probe boring locations and analyzed for BTEX and TPH. We will place the soil samples in laboratory-cleaned glass jars with appropriate labels and place them in an ice-filled chest for
transport to our laboratory. Chain-of-custody documents will accompany the samples. All sample handling equipment will be decontaminated between soil sample intervals. After boring completion,
we will grout all borings with cement, bentonite, or other acceptable material to inhibit stratigraphic cross contamination. Drilling and sampling wastes will be collected in drums for
later characterization testing and disposal. If groundwater is encountered, we will install and sample up to to six (6) monitoring wells to bedrock refusal, or a maximum depth of 25
feet. Hollow-stem auger techniques will be required for monitoring well installation. The locations will be determined using the soil vapor data and the soil boring data to optimize
the locations, taking into account hydrogeologic and contamination considerations. Actual depths will be determined in the field based on stratigraphy and the depths of hydrocarbon-impacted
zones. We will 
Mr. James Pierce, Jr., P.E. November 30, 2001 Page 7 construct the wells with 2-in. ID, flush-joint-threaded, Schedule PVC, using 0.010-in. slotted casing. Filter pack sand will be placed
around the well screen, followed by a bentonite seal and grout to surface. The wells will be flush-mounted relative to ground surface with a protective, locked cover. We will develop
the wells to remove cuttings and sediments that could affect hydraulic communication between the well screen and the formation fluids. After well development, we will purge the wells
of stagnant water and collect groundwater samples for analytical testing. Groundwater collected from the monitoring wells will be analyzed for BTEX, TPH, and PAH. We will place groundwater
samples in laboratory-cleaned glass jars with appropriate labels and place them in an ice-filled chest for transport to our laboratory. One method blank, a duplicate, and a trip blank
to evaluate cross contamination will be included with each sample lot for QAlQC control. Chain-ofcustody documents will accompany the samples. Sample handling equipment will be decontaminated
between wells. Sampling wastes will be collected in drums for later characterization testing and disposal. Upon completion of soil boring and monitoring well installation we will retain
a Registered Public Land Surveyor (RPLS) to locate all the newly-installed wells and borings. The survey will provide an elevation relative to a local benchmark to provide accurate vertical
and horizontal control data that will be necessary for subsequent hydrogeologic characterization. The RPLS will provide a digitized drawing and electronic file in AutoCAD for use in
our reports. Task 6 -Final Report and Recommendations. We will develop a report using TNRCC standardized forms, where required, that are mandatory under their LPST program. These reports
include field activity reports, well monitoring reports, site investigation reports, correspondence forms, and others, as appropriate. The final report will incorporate all the data
data collected from the earlier tasks and include a recommendation directed toward natural attenuation as the preferred remedial alternative. We will also include in the report an estimated
cost, +1-30% to 40%, on what the Town could expect for bringing the site to closure under a natural attenuation scenario. However, it is our experience that the TNRCC may require additional
information before agreeing to a natural attenuation alternative. Schedule Upon receipt of both a signed Work Authorization and Notice to Proceed (NTP), we will begin preparations to
mobilize to the site to begin Tasks 1 and 2. We will complete the fieldwork for Tasks 1 and 2 within two weeks of notification, followed by another two weeks to allow for completion
of the ETI report. Task 3 will begin the week of receipt of the NTP and will be completed within three to four weeks, depending on availability of documents and knowledgeable persons.
We will complete Task 4 two weeks after completion of Tasks 1 through 3, for a total duration duration of about six weeks after NTP. The schedule for Tasks 5 and 6 will be developed
after consultation with the Town; however, we anticipate that Task 5 borings and monitoring wells could begin within two weeks of submission of the Task 4 report, if the Town chooses
to move quickly. We estimate the entire process from initiation of Task 1 to completion of the Task 6 report to be 3 to 4 months. 
Mr. James Pierce, Jr., P.E. November 30, 2001 Page 8 This section presents: (1) a Lump Sum price for Tasks 1 through 4, work that we have confidence has a very well defined scope and
(2), Time and Materials estimated prices for Tasks 4 and 5, work where the defined scope may change based on the results of earlier tasks and uncertainties in site subsurface conditions.
However, we have attempted to provide reasonable scopes of work for the Time and Materials estimated prices based on experience and generally accepted scientific and engineering practices.
The Lump Sum price to conduct Task 1 through Task 4 as one program is $42,500. This price includes provisions for a Kickoff Meeting with the Town attended by the Washington Project Manager,
the Washington Client Coordinator/Airport Engineer, and the Washington Field Manager. The Lump Sum price has been developed based on the following assumptions: 1. Washington-Staubach,
the Town's airport management agent, will provide unrestricted access to Fuel Areas and will provide notification to tank operators of our intent to conduct work in those areas and to
conduct interviews of operational personnel. Town will make good-faith efforts to provide relevant documents in its possession or within its ability to obtain and will assist Washington
in its efforts to obtain relevant documents from others. 2. Town will make a good faith effort to identify locations of their buried utility lines. Washington-Staubach will make a good
faith effort to identify other utility lines or other buried objects in the Fuel Areas for Washington. It is common for the identification of buried utilities and objects to take many
days by the time personnel, equipment, maps, and the field visit are completed. Because of this, it is critical to our schedule that all entities identify their known buried utilities
before mobilization. Provisions have been made to use geophysics to identify unknown buried objects. 3. Prices include costs related to routine project meetings and discussions or meetings
with the Town. However, the prices include a reasonable timeframe for progressive completion of the tasks without extensive delays between tasks beyond the control of Washington. 4.
Prices have been developed on standard 8-hour workdays, 40-hour weeks, assuming normal, nationally recognized holidays with no provision for overtime. A summary of estimated prices for
the work proposed in Tasks 5 and 6, and total estimated cost for all tasks is presented in Table 1 below. These prices are presented as Time and Materials. Table 2 presents the rates
used in estimating Tasks 5 and 6, and would apply to any change orders requested by the Town. 
Mr. James Pierce, Jr., P.E. November 30, 2001 Page 9 Table 1-Task-5pecific Estimates . Description'. .' .. : ..•. .. ,...... .. . ........ ' . • EstimatedPrice1,2· "' .. . . . . .'.
. . ,., ... Task 5 -BoringslWelis/AnalyticallSurvey Task 6 -Report $23,900. $15,400. Total for Tasks 5 and 6 $39,300. Total for Tasks 1 through 6 $81,800. Notes: (1) A 10% contingency
has been included to account for changes in labor rates, inflation, and other unforeseeable circumstances.(2) includes 10% markup on expenses . ....• . Table 2 -Labor Rates" . '. : . ... Personnel . Title . Labor Rate, $/Hr Paul R. Wild Project Manager 110. Ron Bowlin Field Manager 80. Barry
Chamberlain Project Geologist 70. Ron Forest CADD Specialist 70. Various Clerical/Secretarial 50. Various Field Technician 35. For the same reason as stated for labor, Tables 3 and 4
present unit rates for Task 5 push probe boring and monitoring wells, and analytical costs for the proposed program, respectively. ., Table 3.-Boring and Well Rates . '. . Description.
UriitRate, $lItem . Hollow-Stem Auger Boring, 25-ft depth $221ft (25 ft minimum) Direct Push Boring $1700/day Monitoring Well, 25-ft depth, 2-in, ID PVC $40/ft (25 ft minimum) 
Mr. James Pierce, Jr., P.E. November 30, 2001 Page 10 '., Tab.le 􀀢􀀭􀀺􀀬􀀮􀁁􀁮􀁡􀁬􀁹􀁴􀁩􀁾􀁡􀁬􀁾􀁔􀁥􀁳􀁴􀁩􀁮􀁧􀁒􀁡􀁴􀁥􀀺􀁳􀀠....... . '" , . '.,"" " . " Method ..A "'Iyfu"'Medium" 'UnitRate,$/Test""
na '.". ... ... SoillWater Total Petroleum TNRCC 1005 75. Hydrocarbons (TPH) Polynuclear Aromatic EPA 8270 140. Hydrocarbons (PAH) Benzene, Toluene, EPA 8020 or 8260 45. Ethylbenzene,
Xylene (BTEX) Scope of Work Acceptance If you accept this scope of work, and upon receipt of mutually-agreeable terms and conditions that are currently being developed, please forward
us a signed Purchase Order or similar authorizing document that references this Scope of Work and the agreed terms and conditions. Closing Remarks We are pleased to have this opportunity
to serve the Town of Addison and to demonstrate our breadth of capabilities. We look forward to working with you. Sincerely, WASHINGTON GROUP INTERNATIONAL TNRCC RCAS 00169 Paul R. Wild
Manager of Environmental Services TNRCC CAPM00385 Attachments: Soil Vapor Sample Location Map 
NOV 29'011D:2815293232HOUSTON ENV .. .. .. eo .\-• .. • z "" t; o:! h Z tt 􀀧􀁾􀀠􀀮􀁾􀀠17:03 No.003 P.ll J ., !) 􀁾􀀠􀁾􀀠􀁾􀀠 t 􀁾􀀠4 􀁾􀁾􀀠􀁾􀁾􀀠􀁾􀀢􀀠􀁾􀀠􀁴􀁾􀀠􀁾􀀠􀀧􀁜􀁾􀀠􀁾􀀠"-oJ,
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WORK AUTHORIZAnON TERMS 1. The work shall be as described in the Washington Group International, Inc. (''Washington'') proposed Scope ofWork referenced on the face hereof. 2. Unless
otherwise agreed in writing, Client shall pay Washington ror the work on the basis described in Washington's Scope of Work. Payment shall be due within thirty (30) days of invoice. Payment
not received within such time period will be subject to interest of 1% per month for the unpaid balance. 3. Confidentiality obligations related to the work, if any, shall be as set forth
in such confidentiality agreements as may be concluded between the parties. 4. (a)During the work, Washington shall maintain at its sole cost and expense insurnnce as set forth and described
in Item 1.26 (as hereafter amended) of the Standard Specifications for Public Works Construction, North Central Texas Council of Governments, a true and copy of which Item is attached
hereto as Exhibit A and incorporated herein. For the purposes of this contract, the said Item 1.26 is amended by amending 1.26.1 by adding the new subparagraphs (d) and (e) relating
to the provision of profussional liability insurance and pollution liability insurance, to read: (d) Profussionalliability insurance to protect from liability arising out of the performance
of professional services under this contract. Such coverage shall be in the sum of not less than One Million and No/I 00 dollars ($1,000,000); and (e) Pollution liability insurance to
include coverage for third-party bodily injury and property damage (on and off-site) with a limit of $1,000,000 per claim. The pollution liability insurance shall also include clean-up,
remediation, restomtion costs, and other related costs and expenses. This insurance shall be continuously in place during the full term of this Agreement, including any extensions or
renewals thereof, and fur a period of at least one year after final termination ofthis Agreement. The policies shall be endorsed to provide the following, as applicable: (i) in all liability
policies, name the Town of Addison, Texas as an additional insured; (ii) in all liability policies, provide that such policies are primary insurnnce to any other insurance available
to the additional insureds, with respect to any claims arising out of activities conducted hereunder, and that insurance applies sepamtely to each insured against whom claim is made
or suit is brought; and (ill) a waiver of subrogation in favor of the Town of Addison, Texas, its officials, officers, agents, and employees must be included in all such policies. All
insurance policies shall be issued by an insurance company with an A.M. Best's rating of not less than A-and authorized to do business in Texas and in the standard form approved by the
Texas Department of Insurance, and shall be endorsed to provide for at least 30 days advanced written notice to the Town of Addison, Texas of a material change in or cancellation of
a policy. Certificates of insurance, satisfactory to the Town, evidencing all coverage above, shall be furnished to the Town prior to the perfurmance of any work by Washington, with
complete copies of policies furnished to the Town upon request. (b) Washington shall defend and indemnifY the Town of Addison, Texas, its officials, officers, employees and agents (together,
for purposes of this section, the "Town") 
against, and hold harmless the Town from, any and all liability , actions, causes of action, lawsuits, judgements, clans, damages, costs or fees, including attorney's fees and cost of
defunse, for personal injury, property damage or destruction (including without limitation of loss of use of property not otherwise physically injured), breach of contract, or other
hann for which recovery of damages is sought, suffered by any person or organization that may arise out of any negligent, grossly negligent, or willful act or omission of Washington,
its officers, employees, contractors or agents under this Agreement. The provisions ofthis paragraph shall survive the expiration or tennination ofthis Agreement. (c) The work to be
undertaken by Washington is at the Addison Airport fuel farm site, where aviation fuel and other products and materials (some of which may be hazardous) are stored and used for aviation
purposes. However, in the event that onknown, unanticipated or unsuspected hazardous materials are discovered on or near the project site, Washington shall have the right to stop all
work thereon inunediately until (i) all proper authorities are notified, and all applicable laws, rules or regulations have been complied with, and (ii) if the scope of the work is increased
from that originally anticipated under the terms of this Contract, the increased scope of the work and the fees to be paid as a result thereof have been accepted by Client and Washington
in writing. In such an instance, Client shall have the right to terminate this agreement and Washington shall be compensated for all work properly perfonned to the point of tennination
(and Washington shall promptly give to Client all records, reports, documents and all other materials or infonnation (in whatever fonnat, whether electronic or otherwise) prepared or
collected by Washington to the time of such tennination). In the event that the discovery of unanticipated hazardous materials requires Washington to take inunediate measures to protect
health and safety, or to comply with applicable Jaws, rules or regulations, Client agrees to compensate Washington for expenses incurred in taking such action, inclnding, bIlt not limited
to, expenses incurred for equipment decontamination and all other costs incident to the discovery, treatment andlor disposal of the hazardous waste, except to the extent that such expenses
or costs result from the negligence, gross negligence, or willful act or omission of Washington. Washington shall inunediately notify Client of its discovery ofany unanticipated hazardous
materials. 5. Any delay or fuilure of Washington in the perfonnance of its required obligations hereunder shall be excused if and to the extent caused by acts of God, strike, acts of
workman, fire, stonn, flood, windstorm, discovery or uncovering ofhazardous or toxic materials or historical artifacts at the project site, delays occasioned by Client's preconstruction
approval or permitting activities, unusually severe weather, sabotage, embargo, wreck or delay in transportation, accidents in the handling and rigging ofheavy equipment, explosion,
riot, war, court injunction or order, delays by or acts or orders ofany governmental body or changes in laws or governmental regulations, acts or omissions of the Client or its other
contractors or any other cause or causes beyond the reasonable control of Washington provided that prompt written notice of such delay or suspension be given by Washington to the Client.
Upon receipt of said notice, if necessary, the time for performing shall be extended for a perind of time reasonably necessary to overcome the effect of such delays and Washington shall
be reimbursed for the cost, ifany, of such delays ifsuch delays are caused directly by the Client. Washington shall perfonn its work hereunder in accordance with that degree of care
and skill ordinarily exercised by members of the engineering profussion existing as of the date that such services are perfonned. All reports, documents, drawings, designs, plans, or
specifications made, prepared, or collected by Engineer in connection herewith belong to and 
remain the property of Client. Client sball be furnished with such reports, documents, drawings, designs, and specifications and reports. 6. The parties agree that the laws of the State
of Texas shall apply to the interpretation, validity and eoforcement of this Agreement; and, with respect to any conflict of law provisions, the parties agree that such conflict of law
provisions sball not affect the application of the law of Texas (without reference to its conflict of law provisions) to the interpretation, validity and enforcement of this Agreement.
This Agreement has been executed and delivered in the State of Texas and the validity, eoforceahility and interpretation of any of the clauses of this Agreement sball be determined and
governed by the laws of the State of Texas. All duties and obIigations of the parties created hereunder are perfonnahle in Dallas County and such County sball be the venue for any action
or proceeding that may be brought or arise out of, in connection with, or by reason of this Agreement. 7. (a) Termination without cause. Either party may terminate this Agreement at
any time by giving to the other party at least 30 days written notice of such termination. Termination shall have no effect upon the rights and obligations of the parties arising out
of any transaction occurring prior to the effective date of such termination. In the event of termination, all finished or unfinished data, studies, reports and other materials and items
(whether kept electronically, in writing, or otherwise) prepared or assembled by Washington shall be promptly delivered to Customer. Washington shall be paid for all work satisfuctorily
completed prior to the effective date ofsaid termination. (b) Termination with cause. If Washington fuils to perform Washington's duties to the satisfuction of the Customer, or if Washington
fuils to fulfill in a timely and professional manner Washington's obligations under this Agreement, or ifWashington shall violate any of the terms of provisions of this Agreement, then
Customer sball have the right to terminate this Agreement effective immediately upon the Customer giving written notice thereof to Washington. Termination shall have no effect upon the
rights or obligations of the parties arising out of any transaction occurring prior to the effective date of such termination. In the event of termination, all finished or unfinished
data, studies, reports and other items (whether kept electronically, in writing, or otherwise) prepared or assembled by Washington shall be promptly delivered to Customer. Washington
shall be paid for all work satisfuctorily completed prior to the effective date ofsaid termination. 8. Inasmuch as this Agreement is intended to secure the specialized services of Washington,
Washington has no autbority or power to and may not assign, transrer, delegate, subcontract or otherwise convey any interest herein withont the prior written consent of Customer, and
any such assignment, transfer, delegation, subcontract or other conveyance without the Customer's prior written cnosent shall be considered null and void. 9. AU payments, notices, demands,
or requests from one party to another shall be personally delivered or sent by United States mail, postage prepaid, to the addresses below: To Customer: To Washington: 1680 I Westgrove
Road 1250 W. Sam Houston Parkway South Addison, Texas 75001-5190 Houston, Texas 77042 Attn: Jim Pierce Attn: Paul Wild Tel: 972-450-2879 Tel: 281-529-8939 Fax: 972-450-2837 Fax: 281-529-8966

EXHIBIT A -NCTCOG GENERAL PROVISIONS ITEM 1.26. INSURANCE 1.26.1 CONTRACTOR's INSURANCE Without limiting any of the other obligations or liabilities of the CONTRACTOR., during the term
of the contract the CONTRACTOR and each subcontractor at their own expense shall purchase and maintain the herein stipulated minimum insurance with companies duly approved to do business
in the State of Texas and satisfactory to the OWNER. Certificates of each policy shall be delivered to the OWNER befure any work is started, along with a written statement from the issuing
company stating that said policy shall not be cancelled, nonrenewed or materially changed without 30 days advance written notice being given to the OWNER, except when the policy is being
canceled for nonpayment of premium, in which case 10 days advance written notice is required. Prior to the effective date of cancellation, the CONTRACTOR must deliver to the OWNER a
replacement certificate of insurance or proof or reinstatement. Coverage shaU be of the following types and not less than the specified amounts: (a) workers' compensation as required
by Texas law, with the policy endorsed to provide a waiver of subrogation as to the OWNER; employer's liability insurance of not less than $100,000 for each accident, $100,000 disease
-each employee, $500,000 disease-policy limit. (b) Commercial general liability insurance, including independent CONTRACTOR's liability, completed operations and contractual liability,
covering, but not limited to, !be liability assumed under the indemnification provisions of this contract, full insuring CONTRACTOR's (or subcontractor's) liability fur injury to or
death of OWNER's employees and third parties, extended to include personal injury liability coverage with damage to property ofthird parties, with minimum limits as set forth below:
General Aggregate $1,000,000 Prnducts Components/Operations Aggregate $1,000,000 Personal and Advertising Injury $ 600,000 Each Occurrence $ 600,000 Fire Damage (anyone fire) $ 50,000
Medical Expense Expense (anyone person) $ 5,000 The policy shall include coverage extended to apply to completed operations, asbestos hazards (if this project involves work with asbestos)
and XCV (explosion, collapse and underground) hazards. The completed operations coverage must be maintained for a minimum of one year after final completion and acceptance of the work,
\'<Iith evidence of same filed with OWNER. (c) Comprehensive automobile and truck liability insurance, covering owned, hire, and nonowned vehicles, with a combined bodily injury and
property damage minimum limit of $600,000 per occurrence; or separate limits of $250,000 fur bodily injury (per person), $500,000 for bodily injury (per accident) and $100,000 fur property
damage. Such insurance shall include coverage fur loading and unloading hazards. 1.26.2 OWNER'S PROTECTIVE LIABILITY INSURANCE CONTRACTOR shall obtain, pay fur and maintain at all times
during the prosecution of the work under this contract an OWNER's protective liability insurance policy naming the OWNER and the Engineer and insured fur property damage and bodily injury,
which may arise in the 
prosecution of the work or CONTRACTOR's operations under this contract. Coverage shall be on an "occurrence" basis, and the policy shall be issued by the same insurance company that
carries the CONTRACTOR's liability insurance with a combined bodily injury and property damage minimum limit of$600,000 per occurrence and $1,000,000 aggregate. 1.26.3 "UMBRELLA" LIABILITY
INSURANCE If required by OWNER, CONTRACTOR shall obtain, pay for and maintain umbrella liability insurance during the contract term, insuring CONTRACTOR for an amount of not less than
$1,000,000 per occurrence combined limit for bodily injury and property damage that follows from and applies in excess of the primary liability coverages required hereinabove. The policy
shall provide "drop down" coverage wbere underlying primary insurance coverage limits are insufficient or exhausted. OWNER and Engineer shall be named as additional insureds. 1.26.4
RAILROAD PROTECTIVE INSURANCE When required in the Special Provisions, CONTRACTOR sball obtain, maintain and present evidence of railroad protective insurance (RPD. The policy shall
be in the name of the railroad company having jurisdiction over the right-of-way involved. The minimum limit of coverage shall meet the specifications provided by the railroad company.
The OWNER shall specify the amount ofRPI necessary. 1.26.5 POLICY ENDORSEMENTS AND SPECIAL CONDITIONS (a) Each insurance policy to be furnished by CONTRACTOR sball include the following
conditions by endorsement to the policy: (I) each policy sball name OWNER as an additional insured as to all applicable coverage; (2) each policy sball require that 30 days prior to
the cancellation, nonrenewal, or and any material change in coverage, a notice thereof shall be given to OWNER by certified mail. Ifthe policy is canceled for nonpayment ofpremiwn, only
10 days written notice to OWNER is required; (3) the term "OWNER" shall include all authorities, boards, bureaus, commissions, divisions, departments and offices ofthe OWNER and individual
members, employees and agents thereof in their official capacities and/or while acting on behalf ofthe OWNER; (4) the policy phrase "other insurance" shall not apply to OWNER where the
OWNER is an additional insured on the policy; and (5) all provisions ofthe contract concerning liability, duty and standard of care together with the indemnification provision sball
be underwritten by contractual liability coverage sufficient to include such obligations within applicable policies. (b) Insurance furnished by CONTRACTOR shall be in accordance with
the following requirements: (I) any policy submitted sball not be subject to limitations, conditions, or restrictions deemed inconsistent with the intent ofthe insurance requirements
to be fulfilled by the CONTRACTOR. The OWNER's decision thereon shall be final; (2) all policies are to be written through companies duly licensed to transact that class of insurance
in the State ofTexas; and (3) all liability policies required herein sball be written with an "occurrence" basis coverage trigger. (c) CONTRACTOR agrees to the following: (I) CONTRACTOR
hereby waives subrogation rights for loss or damage to the extent same are covered by insurance. Insurers sball have no right of recovery or subrogation against 
the OWNER, it being the intention that the insurance policies shall protect all parties to the contract and be primary coverage for aLi losses covered by the policies; (2) Companies
issuing the insurance policies and CONTRACTOR shall have no recourse against the OWNER for payment of any premiums or assessments for any deductibles, as all such premiums and deductibles
are the sole responsibility and risk ofthe CONTRACTOR; (3) Approval, disapproval or failure to act by the OWNER regarding any insurance supplied by the CONTRACTOR (or any subcontractor's)
shall not relieve the CONTRACTOR of full responsibility or liability for damages and accidents as set forth in the contract documents. Neither shall the bankruptcy, insolvency or denial
of liability by the insurance company exonerate the CONTRACTOR from liability; and (4) No special payments shall be made for any insurance that the CONTRACTOR and subcontractor's are
required to carry; all are included in the contract price and the contract unit prices. Any of such insurance policies required under this section may be written in combination with
any ofthe others, where legally permitted, but none ofthe specified limits may be lowered thereby. 
DATE SUBMITTED: December 3,2001 FOR COUNCIL MEETING: December 11, 2001 Council Agenda Item: SUMMARY: This item is for the Award ofa Contract to Lindamood Construction Co., Inc., for
the Nile Properties Demolition Project. FINANCIAL IMPACT: Budgeted Amount: Not specifically budgeted, but funds are available as part ofthe Arapaho Road, Phase IIIIII project totaling
$20.5 mi1Iion. Cost: $42,500.00 BACKGROUND: In conjunction with the proposed construction ofPhase IT ofArapaho Road, from Marsh Lane to Surveyor Blvd., it is necessary to perform demolition
ofan existing office/warehouse structure on property that was recently acquired by the Town through the eminent domain process. The previous owner, Nile Properties, vacated the structure
that is located on the west side ofSurveyor Blvd, and bids were received on December 3, 2001 for demolition and grading ofthe site. Five contractors picked up plans and specifications
for the project and attended a mandatory pre-bid meeting at the site. These five contractors submitted bids for the project. Attached is a bid tabulation for the proposed improvements.
Lindamood Construction Co., Inc., submitted the lowest responsive bid, in the amount of$42,500.00. Satisfactory references were received regarding the quality ofwork on this contractor.
The demolition and site grading is scheduled for completion within 75 calendar days. The contractor has successfully completed work ofsimilar scope in other muniCipalities in the area.
RECOMMENDATION: Staff recommends that Council authorize the City Manager to enter into a contract with Lindamood Construction Co., Inc. for the Nile Properties Demolition project, in
the amount of$42,500.00.