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' Water samples for heavy metal or inorganic constituents will be sampled as described above in <br /> Section 3 3 <br /> ' On-site determinations for pH, conductivity, temperature, and dissolved oxygen will be <br /> conducted at each site Field observations will be recorded for sample source, width and <br /> depth, turbulence and aeration, suspended or organic material, precipitates or algae, bedrock <br /> ' geology, vegetation, and possible contaminants <br /> These surface sampling procedures are designed to <br /> ' ensure that surface water are samples representative <br /> P <br /> ' ensure that all sample descriptions and field observations are consistent and <br /> accurate <br /> ' minimize the risk of cross-contamination between samples <br /> ' 3.5 Free Product Monitoring and Sampling <br /> • When present, the free product thickness will be monitored using a clear PVC bailer The free <br /> product thickness and ground water level will recorded on Well Monitoring forms <br /> • Any equipment used in wells containing free product will not be used in other wells to prevent <br /> ' cross-contamination <br /> ' • All free product removals will be described on Free Product Removal forms <br /> These procedures are designed to <br /> • ensure that all free product thicknesses, descriptions, and field observations are <br /> consistent and accurate <br /> • minimize the risk of cross-contamination to wells without free product <br /> 3.6 Analytical Procedures <br /> American Geological Services, Inc will subcontract all analytical work to GeoAnalytical <br /> Laboratories, Inc in Modesto, California, a state certified analytical laboratory All analytical <br /> work is monitored to insure that the correct EPA approved methodology is utilized for the <br /> ' substance(s) being investigated Cham-of-Custody and QA/QC procedures are followed and <br /> monitored at all times <br /> American Geological Services, Inc. <br />