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D.1 GROUNDWATER SAMPLING AND ANALYSIS PLAN (SAP) <br /> ' This groundwater sampling and analysis plan (SAP) provides guidance to <br /> individuals responsible for conducting groundwater monitoring and sampling <br /> activities as part of The City of Lathrop's Waste Discharge Requirements and <br /> ' Master Reclamation Permit (WDRs) Order No. R5-2006-0094. Water levels and <br /> well-water samples shall be collected from approved monitoring wells using <br /> approved EPA methods, and the results reported quarterly to the RWQCB. <br /> ' Monitoring well locations and sampling requirements are discussed below in <br /> section D.2; Table D1 identifies the approved groundwater monitoring wells <br /> ' sampled for water level only (WL) and wells sampled for water level and water <br /> quality (WL, A). Quarterly groundwater sample collection, handling, and <br /> sampling procedures are described in section D.3. In section DA, Table D2 lists <br /> the constituents for analysis, sample processing requirements and analytical <br /> methods. Table D2 identifies those analyses specifically required by the <br /> Monitoring and Reporting Program, which the WDRs specify as the minimum <br /> required monitoring. <br /> D.2 Monitoring Well Locations and Sampling Requirements <br /> ' Figure D1 shows existing approved monitoring wells, surface drainage courses, <br /> surface water bodies and major physical and man-made features (existing and <br /> ' planned) in the Lathrop area. Monitoring wells are separated into two groups; <br /> existing wells which are part of the City of Lathrop's approved groundwater <br /> monitoring network, and existing wells that monitor groundwater conditions in <br /> ' potential future expansion areas. Figure D2(a) shows the general locations of the <br /> Mossdale, WRP-1, Eastern Lathrop, and River Islands areas; the locations of <br /> approved groundwater monitoring wells within each of these areas are shown in <br /> Figures D2(b) through D2(e). The well identification numbers and uses of the <br /> currently approved wells are listed below in Table D1. Note that the "use" <br /> ' column of Table D1 identifies which approved monitoring network wells are <br /> sampled for groundwater levels only (WL), and which wells are sampled for <br /> groundwater levels and water quality (WL, A). <br /> ' D2 <br />