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Review of Payment Application# 10 8 March 2013 Page 4 ., amount of $240,648.74 including all of the held retainage ($171,400.85). The amount of contingency funds utilized to date under change orders and including the credit issued to the County is $249,765.42 which is about 40.6 percent of the total contingency fund of$614,500. Based on the above review, the quantities and the invoiced amounts appear to be accurate and acceptable within the terms of the contract, and therefore, the invoice amount of$240,648.74 is justified and recommended to be approved for payment. We will send hard copies of the original Payment Application# 10 to SWDD and Comanco by U.S. Mail. CONSTRUCTION SCHEDULE ADJUSTMENTS The Notice to Proceed (NTP) for the construction of the Project was issued to Comanco on 21 May 2012. Per the contract awarded to Comanco, the Project was anticipated to reach substantial completion by 17 November 2012 (i.e. 180 calendar days) and final completion by 17 December 2012 (i.e. 210 calendar days). Because of changes in the actual field conditions than originally anticipated in the construction project, additional work requested by SWDD, enhancements and modifications approved by the Engineer, and multiple delays caused by excessive rainfall, multiple change orders were submitted by the Contractor that resulted in a longer than anticipated construction schedule for completion of the Project. A total of 41 days was added to the construction schedule: (i) 28 days for change order work (including relocation of the reinforced concrete box culvert, modifications for manhole 9, and construction of east-west berm/rain flap); (ii) 8 days for delays due to excessive rainfall; and (iii) 5 work delays for additional work associated with jet cleaning, replacing and videotaping the leachate transmission pipe between manholes 9 and 10. Attachment 3 includes the approved delays due to change order work, rain delays, and additional work. Based on this information, the construction schedule was updated and the revised substantial completion and final completion dates were estimated as 14 January 2013 and 13 February 2013, respectively. Construction of the Project was determined to be substantially complete by Comanco on 14 January 2013 as indicated in Attachment 4. Comanco demobilized from the jobsite and issued a final completion letter for the Project on January 30, 2013, also included in Attachment 4. Geosyntec however received the final as-built drawings for Project on March 5, 2013. CLOSING Geosyntec appreciates this opportunity to provide services to the SWDD on this project. Should you have any questions on the memorandum, please do not hesitate to contact us. Attachment 1 —Reviewed Payment Application#10 (Invoice#12989) Attachment 2—Change Order Reviews Attachment 3 —Approved Delays Attachment 2—Project Completion Letter 270