Eric, The price from Kleinfelder for the Global Slope Stability Analysis for the bridge is $5,950. They said that they could complete it in a week. If I need to kick them off just let me know. We are looking at executing the Global Slope Stability Analysis for the other park items (i.e. Grotto Fountain, tree preservation area and belvedere). The amount for this service is $13,800. If you have any questions, please let me know. Thanks, Clay Barnett, P.E. Town Engineer Town of Addison 16801 Westgrove Drive Addison, TX 75001-2818 Office: (972) 450-2857 -----Original Message----- From: Eric T. Little [mailto:ELittle@udr.com] Sent: Wednesday, April 14, 2010 1:40 PM To: Nancy Cline; 'Bruce Dunne'; Tom Lamberth; Lea Dunn; Carmen Moran; Clay Barnett Subject: RE: Vitruvian Park - Outstanding Issues All, The global slope analysis was due to us tomorrow. I finally got in touch with Geotel a bit ago and Maxwell stated that he was still missing the critical cross section drawings from Halff. I spoke with Eric and they just copied me on an email with those drawings attached. I did locate the boring that Geotel did. It is on the other side of the creek from Savoy. I’ve asked Maxwell to review the cross sections today and reply if he needed anything else. I have also explained to him that we need the report tomorrow at the latest. If we do not get it by then, I would highly suggest that we turn Klinefelder loose. Thanks, Eric Little Project Manager, UDR 5430 LBJ Freeway, Suite 1250 Dallas, TX 75240 Ph: 972.774.0552 Fx: 972.991.4113 Cell: 214.641.5761 www.UDR.com From: Nancy Cline [mailto:ncline@addisontx.gov] Sent: Wednesday, April 14, 2010 10:15 AM To: 'Bruce Dunne'; Tom Lamberth; Eric T. Little; Lea Dunn; Carmen Moran; Clay Barnett Subject: FW: Vitruvian Park - Outstanding Issues Importance: High To all: Attached are the items we need to resolve tomorrow at our weekly meeting. Lea has tasked me to get this information out to everyone. We need to be able to keep progressing so I have noted with each item below the people who should be working to complete this item. Please let me know how I can help. Thank you, Nancy -----Original Message----- From: Christiansen, Eric [mailto:echristiansen@halff.com] Sent: Tuesday, April 13, 2010 5:01 PM To: Clay Barnett Cc: Nancy Cline Subject: Vitruvian Park - Outstanding Issues Importance: High Clay, After our meeting last week, it is clear that a number of issues are still delaying Halff's design effort. Unfortunately, these issues are outside of our contract and therefore, outside of our control. Specifically, we are referring to the lack of a signed geotechnical report as well as the lack of civil engineering information at the Bella Lane Bridge and at the Southern Pedestrian Bridge. First, a sealed geotechnical report is still needed from Geotel or another geotechnical engineering firm to confirm the acceptability of the foundations at each bridge structure relative to global stability. The report must also confirm the active, at-rest, and passive soil pressures, as well as the soil spring constants that Halff has been using in the design of the drilled shaft foundations. We understand this report will be completed by April 16 and look forward to receiving a copy. Eric Little – is this going to be ready? Also, have you confirmed the completion and location of the bores? If not, Clay has requested and received a proposal from Kleinfelder to perform this work. Second, we need to confirm the length and elevation of the Southern Pedestrian Bridge. While we have received information that confirms we have located this bridge correctly, we still haven't received any CAD file from Icon that acknowledges the 148'-6" dimension from face of abutment to face of abutment. (We should point out that we are using a dimension of 151'-6" from CL of drilled shaft to CL of drilled shaft while Icon's files are currently showing a dimension of 150'-0".) In addition, the elevation of the landings has not been set. At last Thursday's meeting, Icon indicated that raising these landings would be acceptable. On Friday, Icon informed both the Town and Halff that something else should be considered for the structure as the Continental Keystone pedestrian truss would not be feasible. After another round of email today, we still don't have a workable solution. Moreover, it seems that Icon is unwilling to consider changing the landing elevation by even a few inches. Finally, we are also still trying to confirm the location of the RW-3 line near the east abutment. This information is not currently available on the CAD files to which we have access. We should note that when we contacted Joel Massey of Icon (at Bruce's suggestion) last week, he was unable to offer us any useful advice. Instead, he suggested we contact Bruce to get the data we needed. Bruce – please submit the requested data to Eric C. Please also come to the meeting with a detailed drawing (including elevations, grading, etc.) of the impact of raising the south pedestrian bridge 1.5 ft. Third, we still need to confirm a number of items at Bella Lane Bridge. Specifically, we need to know the elevations at each end of the bridge, the new rip-rap slope and limits, the location of the seawall (in CAD), as well as the location of utilities near the bridge (in CAD). After Bruce suggested we contact Joel Massey for this information, we did so last Friday. Unfortunately, he could not provide us with any useful information for this bridge either. Bruce – please provide this information to Halff. We should also point out that we are trying to confirm available power sources for each of the bridges. While we will direct these questions to Joel Massey (again courtesy of Bruce's suggestion), we don't believe this effort will be successful. Bruce – please coordinate with Eric C. on the confirmation of power sources. Absent this data, Halff has no alternative but to continue working on assumptions. Numerous problems could result from this approach. For example, we might inadvertently recommend that a drilled shaft penetrate an existing sanitary sewer because we didn't know where the utility was located, or we might not locate the interior bents at the Bella Lane Bridge in the correct location because we didn't know the proposed location of the seawall. We have been requesting much of this data since March 18 to no avail. As a result, we respectfully request that the Town actively encourage Geotel and Icon to provide the information listed above by Noon on Friday, April 16. If we don't have this information by that time, we might have no alternative but to delay the delivery of our plans and specifications to the Town of Addison. Obviously, it is Halff's preference to receive this data and complete the project in a timely manner. Hopefully, with the Town's assistance, this can still be accomplished. Sincerely, Eric Christiansen Eric S. Christiansen, P.E., SECB, LEED AP Senior Structural Engineer HALFF ASSOCIATES, INC. 1201 North Bowser Road Richardson, Texas 75081 Phone 214-346-6284 Fax 214-739-0095 Cell 972-955-2996 www.halff.com ****************************************************************************************************************** This e-mail and any files or attachments transmitted with it contains Information that is confidential and privileged. This document may contain Protected Health Information (PHI) or other information that is intended only for the use of the individual(s) and entity(ies) to whom it is addressed. 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