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Vis Facsimile and Mait l <br />April 9, 2007 <br />Job No. 1806.306 -G>6d~.Lfi~fAF~CA~: <br />Mr_ West Jost ' <br />City of Pleasanton, Public Works ~ _._..__ _.. <br />200 Old Bernal Avenue <br />Pleasanton, California 94566 <br />Subject: Revised Cost Estimate <br />Observation and Testing Services <br />Vineyard Avenue Water Booster Pump Station <br />Pleasanton California <br />Deaz Mr. Jost: <br />This letter formally presents our revised cost estimate to perform observation and testing scrviccs <br />during construction of the Vineyard Avenue Booster Pump Station located off Machado Court in <br />Pleasanton, California. This cost estimate revises our cost estimate dated April 6, 2007 by <br />correcting our subtotal for earthwork observation and testing from $12,268 to $12,286 and <br />estimated total from $30,703 to $30,721. We previously sent you an informal cost estimate <br />based on your Exhibit "A" (approximate quantities) work sheet. We have been providuzg our <br />services based on calls front your on-site inspector, Mr. Adam Nilkie. Below is a tabulation of <br />your work items and estimated quantities along with our cost estimates for each item and totals <br />as faxed to you on March 22, 2007. <br />EARTHWORK OBSERVATIONS AND TESTllYG ESTIMATED COST <br />Site Grading <br />80 hrs ~~ $107. ] 0/hr ~ $8,568 $8,568 <br />Nuclear Gauge $960 <br />80 hours $12/lu = $960 <br />Professional Engineers Review $1,648 <br />8 hours $206,04/hr = 51,648 <br />Word Processing $196 <br />3 hours 65.28/hr = $196 <br />Laboratory Testing $914 <br />4-inch Compaction Curve -3 @ $219/curve = $657 <br />6-inch Com action Curve - 1 $257/curve = $257 <br />Estimated Subtotal $12,286 <br />CONSTRUCTION INSPECTIONS AND OBSERVATIONS <br />Reber Placement $4.284 <br />40 houus $107.10/hr =$ 4.284 <br />Concrete Placement $4,284 <br />40 hours , $107.10/hr =$4,284 <br />Masonry Grout PlacemenC $4,284 <br />40 hours (~ $ ] 07.10/hr = $4,284 <br />Sample Pickup and Delivery $489 <br />8 tri s ,$61.20/tri = $489 <br />Concrete/Masonry compression test (sets of 4) $672 <br />8 scts (a $84/set = $672 <br />ti~)IL ENGINEERS ENGINFkI:ING GEOLOGISTS 5587 SUN<~L IiUULEVAhD PLEASANTON. CA 94;1,1, (9251 4840220 • fAX: (9711 H66.9<,aS <br />