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inspection of non-compliant electrical mast arms and a replacement source for same. CM, Inc. continues to provide quality assurance testing and source inspection in accordance with Caltrans requirements as required by City's agreement with the State. Note our testing budget was based on City's initial construction estimate of$3.6M for the project while actual low bid was$5.3M. CM, Inc. has attempted to mitigate the above impacts by cutting back on resident engineer/project manager hours; changing staff shifts to adjust to contractor's changing work schedule to minimize staff time; not backfilling open positions due to staff time off; and meeting minimum quality assurance testing requirements. In contrast,the number of force account change orders with the contractor;additional review times for complicated value engineering proposals;additional effort to resolve SWPPP risk level and traffic controller testing issues; additional effort required due to contractor's repeated change of contract personnel; development of a source inspection quality manual required by Caltrans, but not included in our scope; and time extensions have hampered further efforts to mitigate impacts. The sum of these efforts has resulted in construction management and inspection hours billed to date being roughly in-line with those originally estimated for a corresponding period for the I-580/Poothill Road project, despite efficiencies lost with delays on the I-680Bernal Avenue project. Quality assurance testing and source inspection costs remain impacted. We are requesting the City issue a contract amendment in the amount of 587,000.00 to cover additional construction management, inspection, and quality assurance testing costs incurred due to the above listed reasons.The breakdown of this estimate is as follows: Hours Rate Extended Bill Carlson, PE Project Manager/ 240 $166.86 $40,046.40 Resident Engineer Mimi Lee, PE Construction Insp/ 180 $131.69 $23,704.20 Office Engineer Testing Services $23,000.00 TOTAL $86,750.60 Say $87,000.00 This amount would cover costs until contractor's projected finish date plus an additional week of field work as I feel their schedule is aggressive. I am available to discuss this request in greater detail and look forward to assisting the City with the successful completion of both projects. Please contact me with any questions. I can be reached at 415.990.3705. Sincerely, Bill Carlson, P.E. President ;SSi SFVFNTH AV-Mu lF • SANS Faf-Mrlcrn r.-,I I nonun 0,1177 • Al c can ]Inc