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41 <br /> ARCO Sites <br /> Page 3 <br /> 3425 Tracy Blvd. , Tracy ARCO Facility #2093 <br /> PHS/EHD contact - Harlin Knoll <br /> The vapor extraction system is operating and air sparging will <br /> start soon. The concentrations of contaminants in the ground <br /> water samples from monitoring well MW8 are declining. If <br /> concentrations in the water samples from this well continue to <br /> decline than an additional well to define the plume of . <br /> contamination will not be necessary. <br /> Summary <br /> The meeting allowed for continued communication between all parties <br /> and for continued progress at the sites . <br /> t <br /> If you disagree with this summary or have any questions contact me <br /> at (209) 468-3449 . <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Margare Lagorio, REHS, Supervisor <br /> Site Mitigation Unit <br /> C : CVRWQCB - Beth Thayer <br /> c : EMCON - Jay Johnson <br /> c: Brown & Caldwell - Joel Coffman <br /> c : LOP files <br />