•• Sa*", Memorandllm 1211419S A<kIi8Oll UrtIM 􀁄􀁩􀁳􀁴􀁴􀁩􀁾ConsIIlIing (SM 51443.) PaOOng Garages JimMaIooey 􀁾􀀠􀁊􀁯􀁍􀁾􀀠"': Cannen Mom.o. Paris Rut:herl'onl (via Fax). Dan Kenney
Sasaki has dcsi,gned 􀁾in m'ban silllaliOll willi and wi!haul sigbt line clips.. The roOowing "'" our general guidelinOl' related W driveway sig/JlliDes that 0Ill" W_ office uses itt
tbe deai,gD ofgara,ges In um.m slrualioos. • The stmc1urf: ofllte g:aragelbuilding i. uclippe<l"w provide a "\;lgbllliaogle" from !be driver'. tUI!e of dJe veIJiI;Ie. * Ifno sigbt line
eBpis pmYidod a ulJab>-or arm isgcucndl,r providod wlli<:h fun:e:;; Ilte vehicle'" slap cumbilled with ftaslUng lights andbuu-. . Itt additiun, a planter or oIbeT "obotacl.eq s/H:RJkI
be provided aIoogtbe tli<.:eof1he bviIdiIlgtodiIllct!he pedesttian:fuf enough awa,r from !be1llce of!be bulJding so !hat tI!e1' woold be visible from Ihe driver's scat of the vcl>icle.
We bave alS., reviewed a number ofteclmieallIlllllUals on the design of􀁾and (lIII'king sttuc_ and hJ1ve foond only ODO stIlIidru:d in Patking Principle, (Sighway Reseatdl BoanI flIaI.,
1!111). "&II sig/JI di5tllnoe can '-Ibe estJIbl!abed by It buildlD8: line se1back of8 10 lOft from lho public walk or by rU1ll1clillg 1110 walls. An a1f<:malivc m.:thod is In 􀁰􀁮􀀻􀁲􀁲􀁩􀁣􀁬􀁥􀁬􀀡􀁩
􀁧􀁢􀁴􀁬􀁣􀁬􀁡􀁮􀁰􀀢􀀮􀁢􀁹􀁟􀁯􀁦􀁾􀁯􀁲􀁣􀀨􀁬􀁴􀀧􀁃􀁬􀁥􀁲􀁾􀀨􀁳􀁪􀀱􀁊􀁂􀁾􀁫􀀡􀁮􀁯􀁴􀁢􀁥􀀠IIl<lI'l'dJe 3 ftabove sidewalb." It ftlzthor .IIOCS on to lIOIe that a pede8Ililla 'M1I1IiJl,g
sysIem """ be utilized at "blind 􀁾... We have COIIW:lDd lho cilli:a ofs... P"""",i.\",, "'""""'"'" and Bel""""', and lada/B bave:not received auy JIOSiIive ftledbaclo: on 8Wldards regarding
tbls 1_. 'l'bete are stili II coapIe of peopl¢ yoo havuotrelumcd thelrca1ls. boI ill the inmreot ofproviding you wilh" pre1lminal:y _poose we are farwanling ourfiadIo:ss 10 dale. We
wm provld& you with aD 􀁾􀁩􀁦􀁾1'CI<iOi'I'C any IlCW infmmotioo. 
Page 2 We've also taIlal(I with Rod Kelly ofBarton Asclttnan win> indical£d!bat he was notaW>lIe ofmty specific slJlll<!anf> related to this iss"". H. did SIlgge81 that it would be po<sWl..
to do an analY"i' based on Avcllicle 'lC(:eleralion spe<dR, pede6triaD spe<!d;I tmd detailed layout oftbe garngc exit and sidewalk, incllllfmg stoPPiD1I10CJlliOll ofcars, to delermine
ifa ''re85OIIabJ.. " sight O'imtgte .... beiDg provided. PIoo>e caU ifyou have IDly qllOSliollS ()1' would lib mme i.!Iput on thio matter from SOlOIIti. ** TOTAL PAGE.002 ** 
Sasaki Associates, Inc• • Date Project Subject From To Memorandum February 23, 1995 Addison Urban Center Cost Sharing Model Evaluation Dan Kenney and Nancy Armstrong ?work date). ;pond
2. The contingencies have been revised so that 5% is added to the subtotals (with the exception ofthe Mildred Street utilities) and 20% is added to the total cost. This increases the
costs from the previous estimate when all the contingency was added to the total cost. In addition, the contingency has been reduced by 5%. 3. Utilities costs have been ineluded in the
individual Street Category costs. 4. Columbus has identified the parking areas and associated sidewalk bump-outs, the additional resulting sidewalk paving, and the crosswalks as costs
over and above a typcial street cost. 5. The unit cost included for Chicago brick is much lower than typcial clay brick paver brick. 1925 San Jacinto Street Suite200 Dallas, Texas 75201
Telephone 214-922-9380 Facsimile 214-954-0687 
ADDISON URBAN OENTER SA 41532.00 Sasaki Associates. Inc. Streetscape Oost Sharing Model-Revised Date: February 24, 1995 Item Quantltyl LF Street Unit Columbus Unit Cost Oolumbus Subtotal
Stsndard Oeveloper Unit Cost Standard Developer Subtotal Street Category 'A' -Major Residential Boulevard (Quorum Drive -1,840 LF) 1. Sidewalk -brick pavers 26.00 SF $7.00 $182.00 $2.00
$52.00 2. Sidewalk -concrete subslab 26.00 SF $2.00 $52.00 $0.00 $0.00 3. Street light conduit/irrigation sleeves 5.00 LF $3.00 $15.00 $0.05 $0.25 4. Irrigation system 3.00 LF $9.33
$27.99 $9.33 $27.99 5. Trees (25' o.c.) 0.08 EA $1,500.00 $120.00 $200.00 $16.00 6. Tree planter (5' X 10') 2.00 EA $3.00 $6.00 $3.00 $6.00 7. Antique street lights w/bose (75' o.c.,
0.03 EA $1,900.00 $57.00 $0.00 $0.00 8. Subdrain system 2.00 LF $10.60 $21.20 $10.60 $21.20 9. Bench, bike rock, trash receptacle 2.00 EA $33.64 $67.28 $0.00 $0.00 10. Utilities duct
2.00 LF $25.00 $50.00 $0.00 $0.00 TOTAULF STREET $598.47 $123.44 X 5% contin!i!. X 5% conlln!i!' $628.39 $129.61 X 1.840 X 1.840 TOTAL STREET COST $1,156,244.04 $238,486,08 IclTY SHARE
OF lMi>RovEMENTS--_... $917,758 I Page 1 
Standard Standard Quantity/Columbus Columbus Developer Developer Item LF Street Unit Unit Cost Subtotal Unit Cost Subtotal Street Category 'B' -Principal Collector (Spectrum Drive -1,560
LF) 1. Sidewalk -brick pavers 22.00 SF $7.00 $154.00 $2.00 $44.00 2. Sidewalk -concrete subslab 22.00 SF $2.00 $44.00 $0.00 $0.00 3. Street light conduitjlrrigation sleeves 4.00 LF $3.00
$12.00 $0.05 $0.20 4. Irrigation system 3.00 LF $12.00 $36.00 $12.00 $36.00 5. Trees (25' o.c.) 0.08 EA $1,500.00 $120.00 $200.00 $16.00 6. Tree planters (5' X 10') 2.00 EA $3.00 $6.00
$3.00 $6.00 7. Antique street lighls w/base (75' o.c.) 0.03 EA $1.900.00 $51.30 $0.00 $0.00 8. Subdrain system 3.00 LF $\0.60 $31.80 $10.60 $31.80 9. Bench. bike rack. trash receptacle
2.00 EA $33.64 $67.28 $0.00 $0.00 10. Utilities duct 2.00 LF $25.00 $50.00 $0.00 $0.00 TOTAULFSTREET $572.38 $134.00 X 5% conlinli!. X 5% contins. $601.00 $140.70 X 1.560 X 1.560 TOTAL
STREET COST $937,558.44 $219,492.00 ICITY SHARE OF IMPROVEMENTS $718,066 I Page 2 
Standard Standard Quantity/Columbus Columbus Developer Developer Item LFStreet Unit Unit Cost Subtotal Unit Cost Subtotal Street Category 'C' • Residential Street (5,070 LF) 1. Sidewalk
-brick paven; 22.00 2. Sidewalk -concrete subslab 22.00 3. Street light conduit/irrigatlon sleeves 4.00 4. Irrigation system 2.00 5. Trees (25' o.c.) 0.08 6. Tree planters (5' X 10')
2.00 7. Antique street lights w/base (75' o.c.) 0.03 8. Subdrain system 2.00 9. Bench, bike rack. trash receptacle 2.00 10. Utilities duct 2.00 SF SF LF LF EA EA EA LF EA LF $7.00 $2.00
$3.00 $8.00 $1.500.00 $3.00 $1.900.00 $10.60 $33.64 $25.00 $154.00 $44.00 $12.00 $16.00 $120.00 $6.00 $51.30 $21.20 $67.28 $50.00 $2.00 $0.00 $0.05 $8.00 $200.00 $3.00 $0.00 $10.60 $0.00
$0.00 $44.00 $0.00 $0.20 $16.00 $16.00 $6.00 $0.00 $21.20 $0.00 $0.00 TOTAULFSTREET $541.78 X 5% contina. $568.87 $103.40 X 5% contina. $108.57 TOTAL STREET COST X 5.D70 $2,884,165.83
X 5.070 $550,449.90 ICITY SHARE OF IMPROveMENTS $2,333,7161 Page 3 
Standard Standard Quantity/Columbus Columbus Developer Developer Item LF Street Unit Unit Cost Subtotal Unit Cost Subtotal Street Category 'E' • Mildred Street Spclal Events Parkway
(1,090 LF) 1. Sidewalk -brick pavers 27.00 SF $7.00 $189.00 $2.00 $54.00 2. Sidewalk -concrete subslab 27.00 SF $2.00 $54.00 $0.00 $0.00 3. Street light conduit/irrigation sleeves 4.00
LF $3.00 $12.00 $0.05 $0.20 4. IrrigaHon system w/hose bibs 2.00 LF $8.50 $17.00 $8.00 $16.00 5. Trees w/eleclrical, etc. (25' o.c.) 0.16 EA $1.600.00 $256.00 $200.00 $32.00 6. Tree
Grates 0.08 EA $500.00 $40.00 $0.00 $0.00 7. AnHque street lights w/base 0.05 EA $1.900.00 $102.60 $0.00 $0.00 8. Street light standards (100' o.c.) 0.02 EA $1,500.00 $30.00 $0.00 $0.00
9. Subdrain system 4.00 LF $10.60 $42.40 $10.60 $42.40 10. Bench, bike rack. trash receptacle 2.00 EA $33.64 $67.28 $0.00 $0.00 11. UtlllHes duct 2.00 LF $25.00 $50.00 $0.00 $0.00 TOTAULFSTREET
$860.28 $144.60 X 5%contin2. X5% contin2' $903.29 $151.83 X 1.090 X 1.090 TOTAL STREET COST $984,590.46 $165,494.70 ICITY SHARE OF IMPROVEMENTS ..... $819,096 Iuuum Page 4 
Standard Standard Quantity/Columbus Columbus Developer Oeveloper Item LFStreet Unit Unit Cost subtotal Unit Cost Subtotal Street Category 'F' -Mildred Street Retail (475 LF) 1. Sidewalk
-brick pavers 30.00 SF $7.00 $210.00 $2.00 $60.00 2. Sidewalk -concrete subslab 30.00 SF $2.00 $60.00 $0.00 $0.00 3. street light conduit/irrigation sleeves 4.00 LF $3.00 $12.00 $0.05
$0.20 4. Irrigation system w/hose bibs 2.00 LF $8.50 $17.00 $8.00 $16.00 5. Trees w/elecmcal. etc. (25' o.c.) 0.08 EA $1,600.00 $128.00 $200.00 $16.00 6, Parking median planting (10'
X 16') 0.08 EA' $300.00 $24.00 $300.00 $24,00 7. Antique streetlights wlbase 175' o.c.) 0.03 EA $1.900.00 $51.30 $0.00 $0.00 8. Subdrain system 2.00 LF $10.60 $21.20 $10.60 $21.20 9.
Bench. bike rack, trash receptacle 2.00 EA $33,64 $67.28 $0.00 $0.00 10. Utilities duct 2.00 LF $25.00 $50.00 $0.00 $0.00 TOTAULF STREET $640.78 $137.40 X 5% connn!i!. X5%contin!i!.
$672.82 $144.27 X475 X 475 TOTAL STREET COST $319,589.03 $58,528.25 ICITY SHARE OF IMPROVEMENTS $251,0611 PageS 
Standard Standard Quantity/Columbus Columbus Developer Developer Item LFStreet Unit UnitCost Subtotal Unit Cost Subtotal street category 'G' • Mildred Street with Parallel Parking (220
LF) 1. Sidewalk· brick pavers 24.00 SF $7.00 $168.00 $2.00 $48.00 2. Sidewalk· concrete subslab 24.00 SF $2.00 $48.00 $0.00 $0.00 3. Street light conduit/irrigation sleeves 4.00 LF $3.00
$12.00 $0.05 $0.20 4. Irrigation system w/hose bibs 2.00 LF $8.50 $17.00 $8.00 $16.00 5. Trees w/electrical, etc. 125' o.c.) 0.08 EA $1,600.00 $128.00 $200.00 $16.00 6. Parking median
planting (7.5' X 10' l 0.08 EA $250.00 $20.00 $250.00 $20.00 7. Antique street lights w/base (75' o.c.) 0.03 EA $1,900.00 $51.30 $0.00 $0.00 8. Subdraln system 2.00 LF $10.60 $21.20
$10.60 $21.20 9. Bench, bike rack, trash receptacle 2.00 EA $33.64 $67.28 $0.00 $0.00 10. Utilities duct 2.00 LF $25.00 $50.00 $0.00 $0.00 TOTAULFSTREET $582.78 $121.40 X 5% contine.
X 5% contine. $611.92 $127.47 X 220 X 220 TOTAL STREET COST $134,622.18 $28,043.40 ICITY SHARE OF IMPROVEMENTS $-106,579 IU TOTAL CITY SHARE (Street Categories A, B, C, E, F, and G)
$5,146,276 20% contingency $1.029,255 IGRAND TOTAL $6;175,531 I Page 6 
Quantity/Columbus Columbus Developer Developer Item LF Street Unit Unit Cost Subtotal Unit Cost Subtotal Street Category '0' -Mews (2,590 LF) 1. Sidewalk -brick pavers 2. Sidewalk -concrete
subslab 3. Street light conduit/irrigation sleeves 4. Irrigation system 5. Trees (25' o.c.) 6. Tree grates 7. Antique street lights w/base (75' o.c.) 8. Subdrain system 9. Bench. bike
rack. trash receptacle 10. Utilities duct 21.00 21.00 4.00 2.00 0.08 0.08 0.03 2.00 2.00 2.00 SF SF LF LF EA EA EA LF EA LF $7.00 $2.00 $3.00 $8.00 $1.500.00 $500..00 $1.900.00 $10.60
$33.64 $25.00 $147.00 $42.00 $12.00 $16.00 $120.00 $40.00 $51.30 $21.20 $67.28 $50.00 $2.00 $0.00 $0.05 $8.00 $200.00 $0.00. $0.00 $10.60 $0.00 $0.00 $42.00 $0.00 $0.20 $16.00 $16.00
$0.00 $0.00 $21.20 $0.00 $0.00 TOTAULF STREET $566.78 X 5% 􀁣􀁯􀁮􀁴􀁩􀁮􀁾􀀮􀀠$595.12 $95.40 X 5% 􀁣􀁯􀁮􀁴􀁩􀁮􀁾􀀮􀀠$100.17 TOTAL STREET COST X 5.D70 $3,017,253.33 X 5.070· $507,861.90
ICITY SHARE OF IMPROVEMENTS $2,509,391 I 20% contingency $501.878 IGRANDTOTAL $3,011,270 I Page 7 
7 ASSUMPTIONS: 1 Street Category 'D' -Mews Is considered the responsibility of the private developer and the costs have been included as a separate item. 2 Offsite streets for Street
Categories 'A', 'B', and 'C' have not been included. All offsite streets for Mildred Street have been included. This Is consistent with the previous estimate prepared by Columbus Realty
Trust. 3 All quantities are based upon the previous cost estimate prepared by Columbus Realty Trust and have been adjusted to reflect the proposed Sasaki sections, attached. 4 Standard
City of Addison requirements as provided by John Baumgartner are as follows: a. 5' wide concrete sidewalks both sides of street ($2/SF). b. grading, turf and irrigation for the 5' behind
the sidewalks ($2/SF). c. 3" caliper street trees at SO' O.c. both sides of street. d. street lights and conduit are by TU Electric. e. no subdrainage system is required. f. no site
fumlshings are required. 5 No costs have been included for plantings in the setback zones or the median along Quorum (trees exist). 6 No costs have been Included for street light standards
at intersections or in medians. PageB 
Public Parks and Open Spece Cost Breakdown· Evaluation Quorum Rotary Park 1 Clearing /pruning/grading looks adequate. 2 Perimeter treatment will allow a metal bollard at +/-10' o.c.
in special paving. 3 Sidewalks will allow a high quality level of paving material. 4 Fumiture allowance will allow + /-12 benches and trash receptacles. 5 The feature allowance will
allow a sculptural or built feature. 6 The planting allowance will allow irrigated trees, shrubs. ground covers and grass. West Mildred Park 1 Cleaming/pruning/grading looks adequate.
2 Perimeter row of trees w /Iighting will allow 2 large trees at 20' + /-o.c. 3 Siaewalks will allow concrete with a scoring pattem or surface texture. Considerably more paving must
be included to accomodate the special events program. 4 Fumiture allowance will allow +/-24 benches and trash receptacles. 5 Planting allowance will allow irrigated grass with some trees.
East Mildred Park 1 Clearing/pruning/gradlng looks adequate. 2 Perimeter row of trees w /lighting will allow 2 large trees at 20' +1-o.c. 3 Sidewalks will allow concrete with a scoring
pattem or special texture. 4 Fumiture allowance will allow +/. 20 benches and trash receptacles. 5 Twin secondary monuments will allow 2·10'+/-pylons of a high quality material. 6 Planting
allowance will allow irrigated grass with some trees. Bosque Park 1 Clearing/pruning/grading looks adequate. 2 Perimeter treatment will allow a special curbing and railing, 3 Sidewalks
will allow concrete with a scoring pattem or surface texture. 4 Fumiture allowance will allow +/-24 benches and trash receptacles. 5 Central feature allowance will allow a moderate trellis
or structure. 6 Planting allowance will allow irrigated grass with some trees and shrubs. Page 9 
Mews Park 1 Clearing/pruning/grading looks adequate. 2 Perimeter treatment will allow a special curbing. 3 Sidewalks will allow concrete with a scoring pattem or surface texture. 4 Fumiture
allowance will allow +/-12 benches and trash receptacles. 5 Central feature allowance will allow a small trellis or structure. 6 Planting allowance will allow irrigated grass with some
trees. Quorum North Park 1 Clearing/pruning/grading looks adequate. 2 Perimeter treatment will allow a special curbing. 3 Sidewalks will allow concrete with a scoring pattern or surface
texture. 4 Furniture allowance will allow +/-18 benches and trash receptacles. 5 Central feature allowance will allow a small trellis or structure. 6 Planting allowance will allow irrigated
grass with some trees. Pocket Parks 1 Clearing/pruning/grading looks adequate. 2 Perimeter treatment will allow a special curbing. 3 Sidewalks will allow concrete with a scoring pattern
or surface texture. 4 Fumlture allowance will allow + /-18 benches and trash receptacles. 5 Planting allowance will allow Irrigated grass with some trees. Page 10 
Utilities Breakout -Columbus Costs Qty/LF CostlLF Units street Unit Price Street Total Street Category A -Major Residential Boulevard (Quorum Drive) 1 VVater IF 2 Sanitary Sewer IF Street
Category B -Principal Collector (Spectrum Drive) 1 VVater IF 2 Sanitary Sewer IF 1.00 $15.00 1.00 $15.00 1.00 $30.00 1.00 $30.00 $15.00 ..115.00 $30.00 X 1840 $55,200.00 X 5% conting.
$57,960.00 $30.00 ..130.00 $60.00 X 1560 $93,600.00 X 5% conting. $98,280.00 Page 11 
Street Category C • Residential Street 1 Water 2 Sanitary Sewer LF LF 1.00 1.00 $30.00 $30.00 $30.00 $30.00 $60.00 XS070 $304,200.00 X 5% conting. $319,410.00 Street Category D· Mews
1 Water 2 Sanitary Sewer LF LF 1.00 1.00 $30.00 $30.00 $30.00 $30.00 $60.00 X 2590 $155,400.00 X 5% conting. $163,170.00 Page 12 
Street Category E -Mildred Sl Special Events Parkway 1 Water 2 Sanitary Sewer LF LF 1.00 1.00 $30.00 $30.00 $30.00 $30.00 $60.00 X 1090 $65,400.00 X 5% conting. $68,670.00 Street Category
F -Mildred Street Retail 1 Water 2 Sanitary Sewer LF LF 1.00 1.00 $30.00 $30.00 $30.00 $30.00 $60.00 X 475 $28,500.00 X 5% conting. $29,925.00 Page 13 
street Category G • Mildred Street with Parallel Parking 1 VValer LF 1.00 $30.00 2 Sanitary Sewer LF 1.00 $30.00 TOTAL IGRANDTOTAL $30.00 $30.00 $60.00 X220 $13,200.00 X5% conting. $13,860.00
$751,275 20"'" contingency $150.255 $901,530] Page 14 
Sasaki A.>sodates, Inc. D:>tc Project n;lrne/number Suhject From Tv J925 $lI:nJadntn S!rt'tt D;tll",.,.. 􀁔􀁥􀀢􀁬􀁉􀁾􀀠'7$'201 TdcF''''un'':2149229.380 ra<::rimlk 21.4 9.$4 06(.1:7 M.moranaum
December 28, 1994 Addison Urban Center SA #41532.00 Streetscape. Cost Sharing Model Dan Kenney and Nancy Armstrong Ron Whitehead and Carmen Moran Attached please find our Streetscape.
Cost Sharing Model. dated December 28, 1994. This document compares the streetscape components of the Preliminary Framework CDSts prepared by Columbus Realty Trust against the typical
City of Addison costs incurred by a standard developer, as we currently understand them. During the COurse of this work, the following issues have arisen: 1. Columbus has divided the
total length of roads for each category into two quantities; totaliength offsite and totallengtb onsite. We do not have an understanding ofwhy this was done 􀁯􀁾􀀠how the offsite lengths
are intended to be improved. We suggest that further conversation occurs with Columbus to gain a better understanding of this issue and what other obligations the City might incur in
offsite costs. 2. Columbus has included str<X:tscape improvements for both sides of Spectrum Drive and we have been consistent in our costing. We suggest, however, that a more realistic
scenario would be for the east $idc to be implemented by tlte future developers. 3. John Bumgaftener indicated to \IS that the City does not require a developer to in$tall a subdrainage
system with the street trcc plantings. C.olumbus has included $uch a system in their costs and. due to the shallow bedrock conditions in Addison, we support tlteir approach. Therefore.
we have also indl.ld.;x! a subdrainage system in tlte standard developer cost. 4. A few of Columbus' unit costs val)'. We suggest that further conversation occurs with Columbus to gain
an understanding of their approach. 5. Columbus did not include any lawn areas beyond the sidewalks, although John Bumgartener indicated that it is typically required. Further evaluation
should be made to determine if it should be added to the costs. 6. Columbus bad costed all of the street sections assuming a sidewalk with stroot trees in tree grates against the curb.
This is contral)' to the section that Addison has indicated it would like to sec which includes planting between the sidewalk and the curb and the sidewalk and the building. We suggest
thut further conversations take place with Columbus to discuss the use of the desired Addison section on specific street types, such as Category 'C' • Residential Streets. We believe
that the proposed Addison 
PageZ section would be appropriate in those locations and would also cost less money. 7. We have identified a couple of"typos" in ColumbU$' numbers that make a slight difference in costs.
Their Total Street Category Cost for Category 'S' is based upon 1,840 LFwhen the actual onsite length as identified at the top of the page is 1,S60 LF. Also. the total Streetscape cost
for Category 'E' should be $405.08 in lieu of$403.08. Thirdly, the Qly/lFof Street under Category 'A' should be0.08 and not 0.80, although the resulting cost is correct. We have made
that change in our estimate. The attached analysis will need further refinement but is a good start for our 􀁤􀁩􀁳􀁣􀁜􀁬􀁓􀀮􀁾􀁪􀁯􀁮􀀠on cost sharing next week. 
􀁩􀁦􀁴􀁴􀁾􀁾􀀠ADDISON UR8AN CENTER SA 41532.00 Sasaki Associates, Inc. 􀁾􀁃􀁯􀁳􀁴􀁓􀁢􀁡􀁲􀁩􀁮􀁧Model Dale: December 28, 1994 Item QuarllilyJ LF Street Vol COOmbus UritCOst Colul'llbusc
SubtOlai Standard Developer UniteOS'! Standard Developer Sf.lbtOlat Street Calegoly "" -Major Residential Boulevard (Quorum Drive -1,840 IF) 1. Sidewalk -Chicago brick unit pavers 11.20
SF $3.50 $39.20 $2.00 $22.40 2. Sidewalk· Acme briCk accents 0.80 SF $7.00 $5.60 $0.00 $0.00 3. Street light conduiVirrlgalion sleeves 5.00 LF $3.00 $15.00 $0.05 $0.25 4. Irrigation
system 3.00 LF $9.33 $27.99 $9.33 $27.99 5. Trees 0.12 EA $1,500.00 $180.00 $4()0.00 $48.00 6. Tree Grates 0.08 EA $500.00 $40.00 $0.00 $0.00 7. Antique street lights w/base 0.02 EA
$1,900.00 $38.00 $0.00 $0.00 B. Subdrain system 2.00 LF $10.60 $21.20 $10.60 $21.20 9. Bench, bike rack, trash receptacle 2.00 EA $33.64 $67.28 $0.00 $0.00 TOTAL $434.27 $119.84 X 1,840
X 1,840 $199,056.80 $220,505.60 ICITY SHARE OF IMPROVEHENTS $578,551 I 􀁦􀀱􀁁􀁌􀁤􀀱􀁖􀁡􀀣􀁾􀀠/)J:Ju.it:/Pr '-J-. Page 1 
Standard Starldard Quantityl ColurnbcJs Columbus Developer Developer Item LF Street Unl Unit Cost Subtotal Unn Cos!: Subtotal Street category 'B' -Principal Collector (Spectrum Drive
-1,560 l.F) 1. Sidewalk 􀁾􀀠Chicago brick unit pavers 2. Sidewalk· Acme brick accents 3. Street light conduMrrigation sleeves 4. Irrigation system 5. Trees 6. Tree Grates 7. Antique
street lights wlbase 8. Subdrain system 9. Bench, bike rack, trash receptacle 16.00 2.00 4.00 2.00 0.06 0.06 0.02 2.00 2.00 SF SF LF LF fA EA EA LF EA $3.50 $7.00 $3.00 $12.00 $1,500.00
$500.00 $1,900.00 $10.60 $33.64 $56.00 $14.00 $12.00 $24.00 $120.00 $40.00 $38.00 $21.20 $67.28 $2.00 $0.00 $0.05 $12.00 $400.00 $0.00 $0.00 $10.60 $0.00 $32.00 $0.00 $0.20 $24.00 $32.00
$0.00 $0.00 $21.20 $0.00 TOTAL $392.48 $109.«l X 1,550 $612,268.00 X 1,560 $170.554..00 ICIiYSHARE OF IMPROVEMENTS .................. $441,6051 􀁾􀁾􀁉􀁾Yl0 tlJ(J/iJ -' 􀁆􀁴􀀡􀁾􀁩􀁲􀀩􀁾􀀯􀀱􀀧􀀠!?r:t}O
'f7f ! Pagel 
Stand..-d Standard Quanlily/Cokmbus Columbus DeveIopef Developer Item LFStreet Unit Unit Cost Subtotal 􀁕􀁮􀁾􀀠Cost Subtotal Street Category 'C' -ResldOOlial su-ee. (5,070 L.F) 1. Sidewalk
-Chicago brick unit pavers 2. Sidewalk -Acme brick accents 3. Street light conduit/irrigation sleeves 4. Irrigation system 5. Trees 6. Tree Grates 7. Antique street lights w/base 8.
Subllrain system 9. Bench, bike rack, trash receptacle 18.40 2.60 4.00 2.00 0.08 0.08 0.02 2.00 2.00 SF SF IF LF EA EA EA LF EA $3.50 $7.00 $3.00 $8.00 $1,500.00 $200.00 $1,900.00 $10.60
$33.64 $64.40 $18.20 $12.00 $16.00 $120.00 $16.00 $38.00 $21.20 $67.28 $2.00 $0.00 $0.05 $8.00 $400.00 $0.00 $0.00 $10.60 $0.00 $36.80 $0.00 $0.20 $16.00 $32.00 $0.00 $0.00 $21.20 $0.00
TOTAl $373.08 $106.20 X 5,070 $1,891,515.60 X 5,070 $538,434.00 ICITY SHARE OF IMPROVEMENTS $1,353,0821 Page 3 
Standard Stoodard OuarIIilyl Collmlbus Collmlbus Developer Developer Item LFStreet Unit UnilCosl Subtotal UnilCost SW!otaI Stmet Categocy 'F -Mildred Street SpcIal EvenIS PaJkway (l,09O
LF) 1. Sidewalk -Chicago brick unit pavers 18.40 SF $3.50 $64.40 $2.00 $35.80 2. Sidewalk -Acme brick accents 260 SF $7.00 $18.20 $0.00 $(WO 3. Slreet light conduit/irrigation sleeves
4.00 LF $3.00 $12.00 $0.05 $0.20 4. Irrigation system 2.00 LF $8.00 $16.00 $8.00 $16.00 5. Trees w/electrical. etc. 0.08 EA $1,600.00 $128.00 $400.00 $32.00 6. Tree Grates 0.06 EA $500.00
$40.00 $0.00 $0.00 7. Anlique streetlights wlbase 0.02 EA $1.900.00 $38.00 $0.00 $0.00 8. Subdrain system 2.00 LF $10.60 $21.20 $10.60 $21.20 9. Bench. bike rack, trash receptacle 2.00
EA $33.64 $67.28 $0.00 $0.00 TOTAL $405.08 $106.20 X 1,090 X 1,090 $441,537.20 $115,758.00 Icm'SHARE OF IMPROVEMENTS $32S,779 I a;t;;/J" 􀁍􀁻􀀮􀀣􀀭􀁾􀀩􀀠􀁴􀀧􀀨􀀻􀁾􀁊􀁘.. Page 4 
Standard Standard Quantityl Columbus Columbus Developer Developer hem U'Street Unit UnilOosl SublOlal UnlIOosI SubtOlal Street ca&egory 'e-z •MiaedStreet RetaIl {475lf} 1. Sidewalk·
Chicago brick unit pavers 15.20 2. Sidewalk· Acme brick accents 1.80 3. Street light conduil/inigation sleeves 4.00 4. Irrigation system 2.00 5. Trees w/electrical, ele. 0.08 6. Tree
G.rates 0.08 7. Antique street lights wlbase 0.02 8. Subdrain system 2.00 9. Bench, bike rack, trash receptacle 2.00 SF SF LF LF EA EA EA LF EA $3.50 $8.00 $3.00 $8.00 $1,600.00 $500.00
$1,900.00 $10.60 $33.64 $53.20 $14.40 $12.00 $16.00 $128.00 $40.00 $38.00 $21.20 $67.28 $2.00 $0.00 $0.05 $8.00 $400.00 $0.00 $0.00 $10.60 $0.00 $30.40 $0.00 $0.20 $16.00 $32.00 SO.OO
$0.00 $21.20 $0.00 TOTAL $390.08 $99.00 X 475 $185,2ll8.00 X 475 $47,405.00 jclTYSHARE OFiMMOvEMENlS $137,8831 Page 5 
Standaro StaOO'ard Ouantltyl Columbus Columbus Developer 􀁾􀁲􀀠item LFStteet Unit Unit Cost Subtotal Unit Cost SubtO'laJ Street cat.egOIy 'E-3' -Mildred Street Rotary Neckdawn (220 l.F)
1. Sidewalk· Chicago brick unit pavers 15.20 SF 2. Sidewalk. Acme brick accen1S 1.80 SF 3. Street light oonduitlirrigation sleeves 4.00 LF 4. Irriga1ion system 2.00 LF 5. Trees wfelectrical.
ele. 0.08 EA 6. Tree Grates O.OB EA 7. Antique street lights w/base 0.02 EA 8. Subdrain system 2.00 LF 9. Bench. bike raCk. Irash receptacle 2.00 EA $3.50 $7.00 $3.00 $6.00 $1.500.00
$500.00 $1.900.00 $10.60 $33.64 $53.20 $12.60 $12.00 $16.00 $120.00 $40.00 $38.00 $21.20 $67.2B $2.00 $0.00 $0.05 $8.00 $400.00 $0.00 $0.00 $10.60 $0.00 $30.40 $0.00 $0.20 $16.00 $32.00
$0.00 $0.00 $21.20 $0.00 TOTAL $38().28 $99.80 X 220 $83.661.60 X 220 $21.956.00 IcrrYSHARE OF IMPROVEMENTS $61.7061 TOTAL CIlY SHARE (Street Ca1egories A., B. C, E. E-2, and E-3) $2.898,605
30% contingency $869.582 1GRAND TOTAL $3,768.1871 Page 6 " 
CL 'X '* G' ASSUMPllONS: IS) 1 Street CategOI)l 'D' -Mews is considered the responsibility 01 the private developer and Ille costs have not been Included in Ihis "'!5estimate. ([ 2 Developers
contribution for Public ParKs and Open Space according 10 zoning will be provided by others. ..J3 Offsile streets for Street Categories 'N, 'S', and 'C' have not been included. All o/fsile
streets for Mildred Slreet have been cr fincluded. This Is consistent with Ihe previous estimate prepared by COlumbus Realty Trust. .:.. 4 All quantlties are per previous cost estimate
prepared by Columbus Realty Trust and have not been COnfirmed. f-S Standard City of Addison reqUirements as provided by John Bumgartener are as follows: "c a. S' wide concrete sidewalks
both sides 01 street ($2/SF). b. grading. turf and irrigation for the S' behind the sidewalks ($2jSF). c. 3' caliper streetlrees at 50' O.c. both sides of street. d. streetlights and
oondutt are by TU Electric. e. no subdrainage system is required. I. no de fumishings are required. c).". Page 7 
Sasaki 􀁁􀁳􀁳􀁯􀁣􀁩􀀢􀁴􀁣􀁾􀀬􀀠(nt, PI.llu,in& Architecture land$Qpe Atchitectu(c Urban 􀁄􀁾􀁩􀁧􀁬􀀱􀀠􀁔􀁲􀁾􀁮􀁳􀁰􀁯􀁲􀁴􀀢􀁵􀁉􀁑􀁮􀀠Plilnnmg: Civjl 􀁅􀁮􀁧􀁴􀁮􀁦􀁬􀁮􀁮􀁾􀀠F.nvironmcnl31
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214 92293S0 Fil($imU<: 2l4954QGS7 Lo-; Angeles, (,"'Ahfom,1\ San Francisw. C'I\ifO\'nja Washingfon, D·C, Watt'rtowh. 􀁍􀁡􀀦􀀤􀀮􀀢􀁣􀀺􀁨􀁵􀀬􀁾􀁮􀁾􀀠Zurich, S"";lteri.!n4 AtfIllatt'd OlTke:
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Sasaki A;;sociales, InC. Date 􀁐􀁲􀁯􀁩􀁾􀁣􀁴􀀠n;lnlCinomber Subject Tv JP"'-SS,.nj!'l.d"'toStl'l«:t 􀁜􀀩􀀢􀁴􀁢􀀮􀀮􀁾􀀬􀀠TU;!:i 7SZ01 􀁔􀁾􀁬􀁥􀁰􀁨􀁑􀁮􀁾􀀠214 922 9J80 f.,airnil(' 2149$4
06B'7 􀁍􀁾􀁭􀁯􀁲􀁡􀁮􀁤􀁵􀁭􀀠December 28, 1994 Addison Urban Center SA #41532.00 Streetscape Cost Sharing Model Dan Kenney and Nancy Armstrong Ron Whitehead lind Cannen Moran Attached
please find our Streetscape COst Sharing Model, dated December 28, 1994. This document compare;; the streetscape components of the Preliminary Framework Costs prepared by Columbus Realty
Trust against the typical City of Addison costs incurred by a standard developer, as we currently understand them. During the course of this work. the following issues have arisen: 1.
Columbus has divided the total length of roads for each allegory into two quantities; total length offsite and [otallen.!:tb onsite. We do not have an understanding ofwhy this was done
or how the offsite lengths are intended to be improved. We suggest that further conversation occurs with Columbus to gain a belter understanding of this issue and what other obligations
the City might incur in offiiite costs. 2. Columbus has included strcetscape improvements for both sides of Spectrum Drive lind we have been consistent in our costing. We suggest, however,
that a more realistic scenario would be for the east side to be implemented by the future developers. 3. John Bumgartener indicated to us that the City does not require a developer to
install a subdrainage system with the street tree plantings. Columbus ha.s included such" system in their costs and, due to the shallow bedrock 􀁾􀀧􀀨􀀩􀁮􀁤􀁩􀁴􀁩􀁯􀁮􀁳􀀠in Addison,
we support their approach. Therefore, we have also induded a subdrainage system in the standard 􀁤􀁥􀁶􀁥􀁬􀁯􀁾􀁲co.st. 4. A few of Columbus' unitcosts vary. We suggest that further conversation occurs with Columbus to gain an undernlanding of their approach. 5. Columbus did not include any lawn areas beyond the sidewalks, although
John Bumgartener indicated that it is tJllically required. Further evaluation should be made to determine if it should be added to the COsts. 6. Columbus had cooted all of the street
sections assuming a sidewalk with stroot trees in tree grates against the curb. This is contrary to the section tbat Addison has indicated it W(\uld like to sec which includes planting
between the sidewalk and the curb and the sidewalk and the bUilding. We suggest tbat further conversations take place with Columbus to discu.."S the use of the desired Addison section
on specific street IypelS, such as Category 'C' -Residential Streets. We believe that the proposed Addison 
PageZ section would be appropriate in those locations and would also cost less money. 7. We have identified a couple of "typos" in Columbus' numbers that make a slight difference in
costs. Their Total Street Category Cost for Category 'B' is based upon 1,840 Lfwhen the actual onsile length as identified at the top of the page i.$ 1,560 LF. Also, the total Streetscape
cost for Category 'E' should be $405.08 in lieu of$403.08. Thirdly, the QtylLF of Street under Category 'A' should be 0.08 and not 0.80, although the resulting cost is correct. We haVe
made that change in our estimate. The attached analysi.$ will need further refinement but is a good start for our discuS(;ion on cost sharing nm week. 
ADDISON URBAN CENTER Sasaki Associates, Inc. SA 41532.00 SIrootscapo CostSharing Model Date: December 26, 1994 Standard Standard Quantityl Columbus Columbus Developei' Developer Item
LFSlmet Un. UmCost Subtotal 􀁕􀁮􀁾􀁃􀁯􀁳􀁴􀀠Subtotal Stteet CaItlgOfy 'A' -Major Residential Boulevard (Quorum Drive -1,840 IF) 1. Sidewalk -Chicago brick unit pavers 11.20 SF $3.50
$39.20 $2.00 $22.40 2. Sidewalk -Acme briCk accents 0.00 SF $7.00 $5.60 $0.00 $0.00 3. Street light conduMnigation sleeves 5.00 LF $3.00 $15.01) $0.05 $0.25 4. Irrigation system 3.00
LF $9.33 $27.99 $9.33 $27.99 5. Trees 0.12 EA $1,500.00 $1130.00 $400.00 $48.00 6. Tree Grates 0.00 EA $500.00 $40.00 $0.00 $0.00 7. Antique street lights wlbase 0.02 EA $1,900.00 $00.00
$0.00 $0.00 B. Subdrain system 2.00 LF $10.60 $21.20 $10.60 $21.20 9. Bench, bike rack, trash receptacle 2.00 EA $33.64 $67.28 $0.00 $0.00 TOTAL $434.27 $119.84X1.840 X1.840 $799,056.00
$220,505.00 [CITY SHARE OF IMPROVEMENTS $578,551 I :f!/{L 􀀯􀁾􀁺􀁶􀁡􀁧􀀯􀁬􀀭􀀻􀀠/47u#flr 􀁾􀀮􀀠􀀣􀁤􀀭􀁾{/PV􀁻􀁐􀁾􀀮􀁌􀀭􀀧􀀠 Page 1 
Starldard Stiillldaro Quatltityl Columbus Columbus Developer Developer Item LFStreet Unl Unit Cost Subtotal Unit Cost Subtotal Street category 'B' -Principal Colledor (Spedl'Um Drive
-1,560 Lf) 1. Sidewalk· Chicago brick unit pavers 16.00 SF $3.50 $56.00 $2.00 $32.00 2. Sidawalk • Acme orick accents 2.00 SF $7.00 $14.00 $0.00 $0.00 3. Street light conduit!irrigatlon
sleeves 4.00 LF $3.00 $12.00 $0.05 $0.20 4. lITigation system 2.00 LF $12.00 $24.00 $12.00 $24.00 5. Trees 0.08 EA $1,500.00 $120.00 $400.00 $32.00 6. Tree Grates 0.08 EA $500.00 $40.00
$0.00 $0.00 7. Antique street tights wlbase 0.02 EA $1,900.00 $38.00 $0.00 $0.00 8. Subdrain system 2.00 LF $10.60 $21.20 $10.60 $21.20 9. Bench, bike rack. trash receptacle 2.00 EA
$33.64 $67.28 $0.00 $0.00 TOTAL $392.48 $109.40 X 1.560 X 1,560 $612,268.00 $170,664.00 jCITYSHARE OF IMPROVEMEWrs ---------􀁾􀀭􀀭􀀭􀀭$441,005\ aM/),f/􀁪􀁾􀁩􀁊􀁲􀁊􀀯􀁤􀁉􀂭􀀯􀀬􀁾􀁩􀁤􀁴􀁬􀁁􀀮􀁗􀁴􀁦􀁯􀀠
eft02Y'f/f Page 2 
Standard Standard Quan1ily/CoI!.mbus ColumOOs DeveIopef Developef Item tFStreet Unit Unit Cost Subtotal UnRCost Subtotal Street Category 'C' • Residenlial Street (5,070 IF) 1. Sidewalk·
ChicagD brick unit pavers 18.40 SF $3.50 $64.40 $2.00 $36.80 2. Sidewalk· Acme brick accents 2.60 SF $7.00 $16.20 $0.00 $0.00 3. Street light conduil/irrigation sleeves 4.00 LF $3.00
$1.2.00 $0.05 $0.20 4. Irrigation system 2.00 LF $6.00 $16.00 $8.00 $16.00 5. Trees 0.06 EA $1,500.00 $120.00 $400.00 $32.00 6. Tree Grates 0.08 EA $200.00 $16.00 $0.00 $0.00 7. Antique
street lights wlbase 0.02 EA $1,900.00 $36.00 $0.00 $0.00 8. Subdraln system 2.00 LF $10.60 $21.20 $10.60 $21.20 9. Bench, bike rack, trash receptacle 2.00 EA $33.64 $67.26 $0.00 $0.00
TOTAl $a73.OS $100..20 X 5.070 X 5.D70 $1.891.515.60 $538,0134.00 lefTYSHARE OJ' IMPROVEMENTS $1.353,00? 1 Page 3 
Standard Standard Ouarttityl Columbus Columbus Develope! Developer Item LFStreet Unit Unit Cost Subtotal Unit Cost SWtolal Street Category 'F-Mildred Street SpcIal Events PruI\way (1,O9O
IF) 1. Sidewalk -Chicago brick 􀁵􀁮􀁾􀀠pavers 18.40 SF $3.50 $64.40 $2.00 $35.80 2. Sidewalk -Acme brick accents 2.50 SF $7.00 $18.20 $0.00 $0.00 3. Street light conduit/irrigation sleeves
4.00 LF $3.00 $12.00 $0.05 $0.20 4. Irrigation system 2.00 LF $8.00 $16.00 $8.00 $16.00 5. Trees w/electrical. etc. 0.08 EA $1.600.00 $128.00 $400.00 $32.00 6. T rea Grates 0.08 EA $500.00
$40.00 $0.00 $0.00 7. Antique street lights w/base 0.02 EA $1,900.00 $38.00 $0.00 $0.00 8. Subdrain system 2.00 IF $10.60 $21.20 $10.50 $21.20 9. Bench. bike rack, trash receptacle 2.00
EA $33.64 $67.28 $0.00 $0.00 TOTAL $405.08 $106.20 X 1,090 X 1,090 $441,537.20 $115.758.00 ICITY SHARE OF IMPROVEMENTS $325:779] fl;;() .. 􀁾􀀯􀁌􀀮flf/-:£Z;> 􀁄􀀢􀀭􀁾􀀭􀀺􀀧,/'../\)lC
Page 4 
$landai'd Standard Quantityl Columbus Columbus Developer DevelllpIJf Item LFStreet Un'* Unit Cost SublOlal UllitCost SutJC.o1lj Street category 'E-Z • MiOOJd Street RetaIl (4751.f) 1.
Sidewalk· Chicago brick unit pavers 2. Sidewalk· Acme brick accents 3. Street light conduit/irrigatioll sleeves 4. Irrigation system 5. Trees w/eJectJical, ele. 6. Tree Grates 7. Antique
street lights w/base 8. Subdrain system 9. Bench, bike rack, trash receptacle 15.20 1.80 4.00 2.00 O.OB 0.08 0.02 2.00 2.00 SF SF LF LF EA EA EA LF EA .$3.50 $8.00 .$3.00 $8.00 $1,600.00
$500.00 $1,900.00 $10.60 $33.64 $53.20 $14.40 $12.00 $16.00 $128.00 $40.00 .$38.00 $21.20 $67.28 $2.00 $0.00 $0.05 $8.00 $400.00 $0.00 $0.00 $10.60 $0.00 $30.40 $0.00 $0.20 $16.00 $32.00
$0.00 $0.00 $21.20 $0.00 TOTAl $390.08 $99.00 X 475 $185,288.00 X 475 $47,405.00 [CrrvSHAREOF IMPROVEMENTS $137,8831 Page 5 
Standard Standard Ouar!tityf Columbus Columbus Oevelclpel' Developer Item lfStreet Unit UnilCost Subtotal UnilCost Subtma! Street category 'E-3' -Mildred Street RotaIy Neckdown (2:i!f)
LF) 1. Sidewalk· Chicago brick unit pavers 15.20 SF 2. Sidewalk· Acme brick accel'i1S 1.80 SF 3. Street light conduil/iITigation sleeves 4.00 LF 4. Irrigation system 2.00 LF 5, Trees
w/eleclfical. etc. 0.08 EA 6. Tree Grates 0.08 EA 7. Antique street lights w/base 0.0.2 EA 8. Subdrain system 2.00 LF 9. Sench. bille rack. trash receptacle 2.00 EA $3.50 $7.00 $3.00
$8.00 $1,500.00 $500.00 $1.900.00 $10.60 $33.64 $53.20 $12.60 $12.00 $16.00 $120.00 $40.00 $38.00 $21.20 $67.28 $2.00 $0.00 $0.05 $8.00 $400.00 $0.00 $0.00 $10.60 $0.00 $30.40 $0.00
$0.20 $16.00 $32.00 $0.00 $0.00 $21.20 $0.00 TOTAl.. $380.28 $99.80 )(220 $83.661.60 )( 220 $21,956.00 ICrtY SHARE OF IMPROVEMENTS $61.70El1 TOTAL CITY SHARE (Street Categories A. S,
C, E. E-2, and E-3) $2,898,605 30% contingency $869,582 [GAANDTOTAL $3.768.1871 Page 6 
ASSUMPllONS: 1 Street Category '0' • Mews is considered the responsibility of the private developer and the COS1s have not been Included in this estimate. 2 Developers contribution for
Public Parks and Open Space according to zoning will be provided by others. 3 􀁏􀁦􀁦􀁳􀁾􀁥􀀠streets for Street Categories 'N. 'S', and 'C' have not been included. All offsile streets
for Mildred Street have been included. TI1is is consistent with the previous estimate prepared by Columbus Really Trust. 4 All 􀁱􀁵􀁡􀁮􀁴􀁾􀁬􀁥􀁳􀀠are per previous COS1 estimate prepared
by Columbus Really Trust Md have not been oontinned. 5 Standard City of Addison requirements as prOVided by John Bumgartener are as follows: a. 5' wide concrete sidewalks both sides
of street ($2/SF). b. grading, turf and irrigation for the 5' behind the sidewalks ($2/SI'). c. 3' caliper street trees at 50' o.C. both sides of street. d. street lights and conduit
are by TU Electric. e. no subdrainage system is required. f. no site furnishings are required. . Page 7
 \ \.', Sasaki Associates, Inc. , Memorandum Date February 23. 1995 Project Addison Urban Center Subject Cost Sharing Model Evaluation From Dan Kenney and Nancy Armstrong To John Baumgartner
00: Ron Whitehead and Carmen Moran The following are the general issues that we have identified in preparing our Streetscape Cost Sharing Model-Revised dated February 24, 1995: I. The
total linear footage ofstreets identified in Columbus' Preliminary Framework Costs· February 199:> does not correspond to the dimensions on the plat (no date). I. Some of the items,
quantities andIor spacings in Columbus costs do not correspond with the most current street sections. 2. The contingencies have been revised so that 5% is added to the subtotals (with
the exception of the Mildred Street utilities) aod 20% is added to the total cost This increases the costs from the previous estimate when all the contingency was added to the total
cost. In addition, the contingency has been reduced by 5%. 3. Utilities costs have been included in in the individual Street Category costs. 4. Columbus has identified the parking areas
and associated sidewalk bump-outs, the additional resulting sidewalk paving, and the crosswalks as costs over aod above a typcial street cost. 5. The unit cost included for Chicago brick
is much lower than Iypcial clay brick paver brick. 1925 San Jacinto Strect Suite200 Dallas, Texas 75201 Telephone 214·922·9380 Facsimile 214·954·0687