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GENESIS ENGINEERING&REDEVELOPMENT <br /> Investigate if the extractable concentrations of the Title 22 metals and Hexavalent <br /> Chromium in the waste drilling mud are below the applicable water quality standards; <br /> a portion of the 24 composite drilling mud samples will be analyzed for the analyses <br /> listed in Section 3.2; including WET and DI WET tests on the samples to analyze the <br /> extractable concentrations of the Title 22 metals and Hexavalent Chromium using <br /> both deionized water and citric acid extractions. <br /> 3. Groundwater Investigation <br /> Collect three grab groundwater samples from borings DP- 6, DP-9, and DP-12 to <br /> supplement the data collected from the groundwater monitoring wells; analyze the <br /> samples for the analyses listed in Section 3.3. <br /> Cal Install and sample 6 Monitoring Wells in the approximate locations of the <br /> decommissioned Monitoring Wells (see Figure B-1); develop and sample the wells; <br /> a`b`b analyze the samples for the constituents listed in Section 3.4. <br /> P. —It <br /> 4. Tidal Influence Study <br /> Conduct a tidal influence study on the uppermost water bearing unit to establish if <br /> there is tidal flux in the unit; install water level recoding devices into selected <br /> monitoring wells to record water level fluctuations. <br /> 5. Surface Water Investigation <br /> Investigate the chemical composition of any surface water or potential runoff; collect <br /> runoff samples during a rainfall event; analyze the samples for the constituents listed <br /> in Section 3.5. <br /> 6. Background Sampling <br /> Investigate background constituent concentrations in off-Site soil and groundwater; <br /> advance 4 borings (DP-25 through DP-28) at the locations to be selected based on the <br /> results of the Tidal Study and collect 3 soil samples from each boring—at 1 foot <br /> below the drilling mud, 3 feet below the drilling mud, and in the vadose zone <br /> immediately above the shallow water bearing unit; record soil lithology for each <br /> boring; analyze the soil samples for the constituents listed in Section 3.1 and the <br /> groundwater samples for the constituents listed in Section 3.4. <br /> Sampling and Analysis Plan 2 of 24 <br /> DePaoli Property <br /> November 14,2007 <br />