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Mr. Carl Lang - 2 - 18 November 1999 <br /> Removal of Contaminated Soil <br /> DRMO Site <br /> NCTS, Stockton <br /> in determining whether COC concentrations of metals in confirmation samples are a threat to <br /> ground or surface water. <br /> 3. Table 1. We have edited Table 1 in order to clarify specific EPA Methods, MDLs, and Target <br /> Levels which the Army Corps of Engineers should revise in their Quality Assurance Project Plan, <br /> as follows: <br /> Compound Medium Method Target Levels MDLs <br /> TPH-Oil Ground water 8015 100 1 50 1 <br /> PCB Ground water 8082 0.5 1 <br /> Lead Soil 7421 <br /> Ground water 200.9 <br /> Cadmium Ground water 200.7 <br /> Total Chromium Ground water 200.7 2.5 l* <br /> Nickel Ground water 200.7 <br /> Zinc Ground-water 200.7 <br /> Hexavalent Soil 7199 <br /> Chromium Ground water 7199 <br /> *OEHHA Public Health Goal=2.5 µg/1 for Total Chromium. Adopted February 1999. See <br /> http://www.dhs.ca.gov . <br /> 4. The Final Plan should include a signature page documenting the registration of the qualified <br /> professional responsible for the project. <br /> Please contact the Board at least 3 days prior to construction activities so we may plan on observing <br /> operations.' <br /> If you have any questions please contact me at (916) 255-3078 or schwabk(a),rb5s.swrcb.ca.,ov. <br /> Kim A. Schwab <br /> Associate Engineering Geologist <br /> cc: Jim Austreng, DTSC, Region 1, Rancho Cordova <br /> Ron Rowe, San Joaquin County Environmental Health, Stockton <br /> Brad Beeman,NCTS, Stockton <br /> Jay Jahangiri, Port of Stockton, Stockton <br /> Christine Baumgardt, Luce, Forward, Hamilton and Scripps, San Diego <br /> Geofon, Inc., 3233 Lance Drive, Unit 1, Stockton, CA 95205 <br /> KAS:DRMO Removal Plan <br />