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JOHN MINNEY <br /> 17137 ROAD37 <br /> MADERA RANCHOS, CA 93636 <br /> (559)275-5937 (559)645-0870 <br /> jminney@gmail.eom <br /> February 23,2011 Job F05022 <br /> Spreckels Sugar <br /> P.O.Box 60 <br /> Tracy,CA 95378 <br /> SUBJECT: UST B,Hydraulic Oil Tank and Bunker Backfill Compaction Testing <br /> Spreckels Sugar <br /> Tracy,California <br /> Gentlemen: <br /> At your request and authorization,the undersigned has supervised the observation and testing of the trench <br /> backfill and grading operations pursuant to the approved plans as shown on Figures I through 2. Compaction <br /> test results are tabulated on the enclosed Field Density Report Summaries. Test locations are given by <br /> reference point and are shown on the attached Compaction Test Location Maps(Figures 1-2). <br /> At this time, there are no buildings proposed for construction on the backfill. Nonetheless, the intent is to <br /> compact the backfill such that it would meet standard building code compaction rcquirements. The standard <br /> building code compaction specification is 90%compaction. However,the site lies in a flood plain and prior to <br /> commencement of backfill,the San Joaquin County Flood Control Department was asked whether they had <br /> any compaction requirements in the flood plain,over and above the standard 90%criterion. According to the <br /> County,additional compaction would be required if the fill was part of a levee or a channel. The site is not <br /> part of a levee or a channel. No further requirements were specified. <br /> The grading has included <br /> -removal of petroleum impacted soils to the satisfaction of the San Joaquin County Environmental Health <br /> Department, <br /> -placement and compaction of a layer of pea gravel in the bottom of the excavation to the point of any water <br /> entry and <br /> -placement and compaction of on-site materials as potential structural fill. <br /> The status of the test results is noted on the enclosed summary of field density test results. The test results <br /> indicate that the referenced backfill has met the specified compaction requirements. Relative densit <br /> project is based upon maximum density as determined by ASTM D 1557. l���t/N ey <br /> All work has been completed in accordance with the approved plans and specifications. �' y <br /> w No.32537 m <br /> aG Fxp:06/30/11 <br /> We appreciate being of service to you on this project. Please do not hesitate to call me with an scions you <br /> might have regarding this report. Sj <br /> submitted, <br /> q ClVCIVIL <br /> spec lly q <br /> J n n c, <br /> E 2537,GE 602,REA 0021 6 No.602 <br /> LU <br /> Enclosures: cc <br /> Exp:06/30/11 a <br /> -Site Plan(Figures 1-2) <br /> -Summary of Field Density Test Results <br /> -Laboratory Maximum Density Results �F CAt1�� <br />