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1 <br /> other 7 monitoring wells, if there is enough water to sample. <br /> CA Stabilization of EC, pH, and temperature will be checked <br /> after purging and before and after sample collection to <br /> ensure samples collected are representative of formation <br /> water. The purged water will remain on-site, in secured <br /> 55 gallon drums, until laboratory results are received. A <br /> proposal for treatment or disposal of the water produced <br /> during development will then be prepared. Mater sample <br /> k collection and preservation will be in accordance with <br /> WaterWork's groundwater sampling protocol (Appendix II). <br /> One travel blank will be analyzed for quality control. <br /> F� Bailers with bottom emptying devices to reduce <br /> volatilization will be used. The water samples will be <br /> analyzed by Sequoia Analytical for benzene, toluene, <br /> ethylbenzene, xylenes (BTEX), TPHG, and organic lead using <br /> appropriate EPA methodologies. A quarterly <br /> nonitorina/sampling/reporting program will be initiated <br /> starting the following quarter. <br /> 1s During well development/purging, drawdowns will be monitored <br /> in order to estimate formation transmissivity. This data <br /> r may be used along with the lithologic descriptions to assess <br /> contaminant pathwaysand guide the design of a pumping test. <br /> WaterWork will perform a constant rate pumping test to <br /> establish formation, hydraulic parameters and well <br /> t productivity. The test will utilize one of the up gradient <br /> wells (MW6 or MW7) in order to avoid the production of <br /> { contaminated groundwater. Pumping duration will be 8-24 <br /> hours and will include the moi,it'oring of three or more <br /> observation wells. This data will be utilized in developing <br /> -� the groundwater remediation strategy. Based upon analysis a <br /> of all data collected the need for additional wells will be <br /> assessed. i <br /> r ' The field investigation will be conducted under the direct <br /> supervision of Russell W. Juncal, California Registered <br /> Geologist No. 3864, and Nora H. Kataoka, California ' <br /> ( Registered Civil Engineer No. 38322. The appropriate <br /> � i individual will aI.p4 review and sign the assessm_nt report. <br /> The Problem Assessment Report (PAR} will be prepared <br /> ILI <br /> according to SJDHS guidelines. Findings of the <br /> investigation will be summarized and a further course of <br /> Y, action will be recommended, as appropriate. The PAR will <br /> be submitted within six weeks of r;ompleting field <br /> work/sampling. <br /> :r, _ <br />