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F4CCTE <br /> December 31, 2003 BEYOND ENGINEERING <br /> SA0122407 <br /> Phil Govea <br /> Senior Engineer <br /> Department of Public Works <br /> City of Manteca <br /> 1001 West Center Street <br /> Manteca, CA 95337 <br /> SUBJECT: SLUDGE DRYING BED SOIL EVALUATION WORK PLAN <br /> Dear Phil: <br /> On June 19, 2003, a Request For Information(RFI)was sent to the City of Manteca(City)by the <br /> Regional Water Quality Control Board(Regional Board). The RFI includes a requirement to <br /> evaluate the potential contamination of soil beneath the sludge drying beds. According to the RFI, <br /> As part of the expansion, the sludge drying beds will be removed. Manteca must <br /> evaluate the soils beneath the beds before closure of these sites to determine if <br /> contamination exists prior to new construction on these sites. A plan for the <br /> evaluation of the soils beneath the beds should be submitted to the Regional Board <br /> for approval prior to closure of the beds. <br /> It is our pleasure to provide to you this work plan for the collection, analysis, and reporting of <br /> results of soil samples collected from below the sludge drying beds at the Manteca Wastewater <br /> Quality Control Facility(WQCF). <br /> Kleinfelder, Inc. has agreed to perform the soil sampling,which has been scheduled for the week of <br /> January 5, 2004. <br /> SOIL SAMPLE COLLECTION <br /> Five soils will be collected from both the summer and winter sludge drying beds that will be <br /> removed as part of the WQCF expansion. Two background samples will be collected from a field <br /> to the east of the WQCF that has not had biosolids applied to it, for a total of twelve soil samples. <br /> Soil samples will be collected from a depth of five feet below ground surface (bgs) at the <br /> approximate locations shown in Figure 1. <br /> NOLTE ASSOCIATES, INC. <br /> 1750 CREEKSIDE OAKS DRIVE, SUITE 200 <br /> SACRAMENTO, CA 95833-3648 <br /> 916.641.1500 TEL 916.641.9222 FAX <br /> W W W.N O LT E.COM NASA1224\Correspondence\sludge beds soil workplan.doc <br />