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BOOK JOG PAGE64 drawing. The pipe was located under overgrown Brazilian Peppers along the edge of the ditch requiring some additional clearing during construction. The existing pipe is also deeper than expected resulting in additional cubic yards of material and exploratory excavation time. (See attached spreadsheet.) Lastly, the seed and mulch for rights-of-way stabilization was not estimated in the preliminary cost. The originally suspected location of the pipe was in an area where seed and mulch was not required, since ground cover would grow back naturally. However, the actual pipe location was in an area where erosion could easily take place so seed and mulch was placed to prevent erosion. The total additional labor cost is $4,076.00 and adjusts the total contract amount to $13,386.70. The preliminary estimated cost for material was inadequate. The adjustment in material costs is $6,667.37. As stated earlier, the existing pipe was found four to five feet deeper than suspected, requiring adjustment for valve accessibility. Two options for correction were considered: a. Build a seven foot high, 10 -foot by 10 -foot concrete vault at an estimated cost of over $10,000.00, including material and labor, or b. Extend the stems of the valves at a cost of $1,945.00, including installation. The adjustment of valve stems is the more economical approach. In summary, Labor Material Original amount $ 9,310.70 $ 35,939.47 Additional/ adjustment 4,076.00 8,612.37 + New Contract Amount $13,386.70 $ 44,551.84 Amount paid to date 7,096.23 35,939.47 Balance to date $ 6,290.47 $ 8,612.37 This figure includes the material adjustment cost in the amount of $6,667.37 and valve adjustment material and installation in the amount of $1,945.00. The labor contract portion is complete. The material portion is not complete. The County will compensate the material supplier upon completion of the installation of the valve stems. This will be done by the material vendor in the amount of $1,945.00, which is included in the $8,612.37 cost. RECOMMENDATION The Department of Utility Services recommends the Board of County Commissioners approve the following: 1. An adjustment in the labor contract in the amount of $4,076.00 to Driveways, Inc., which adjusts the final contract amount to $13,386.70. 2. Final payment to labor contractor, Driveways, Inc., in the amount of $6,290.47 for services rendered to complete existing authorization. 3. Adjustment in the material cost to U.S. Filter/Davis in the amount of $8,612.37, including adjustment cost of valve stems with installation in the amount of $1,945.00. 4. Final payment to U.S. Filter/Davis of a balance of $8,612.37 upon completion of the valve stem adjustment. August 25, 1998 54 0 0