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i <br /> Advanced GeoEnvironmental, Inc. <br /> November 17, 1999 <br /> On November 10, 1999, PHS/EHD was additionally informed that MW-7, the <br /> northernmost MW in the work plan would not be completed until the analytical <br /> results of the soil samples from the other monitoring wells were reviewed and it was <br /> determined that MW-7 was still necessary. PHS/EHD was not consulted before these <br /> decisions were made. <br /> R <br /> At the meeting on November 16, 1999, PHS/EHD was informed that AGE planned to <br /> install another MW not proposed in the work plan next to MW-6, which was installed <br /> 4 in the continuous cored bore-hole. As part of the work plan approval, PHS/EHD <br /> provide the condition that the proposed boring (continuous core boring) near B5 <br /> should advance to at least 30 feet below surface grade with the contingency to bore <br /> deeper if necessary to provide vertical definition and that if it was necessary a MW be <br /> installed in separate boring. Installation of a second separate MW next to MW-6 <br /> deviates from this condition. <br /> Communication about site corrective action decisions and the scheduling ofwork <br /> between PHS/EHD and AGE must improve. PHS/EHD approval should be obtained <br /> before any modifications to the work plan are made. Notification to PHS/EHD of <br /> scheduled work should be made when AGE has every indication that the work will., <br /> commence on the proposed date. i <br /> � I <br /> If you have any questions please contact Jeffrey Wong at (209) 468-0335. <br /> ` Donna Heran, RENS, Director <br /> Environmental Health Division <br /> I <br /> Jeffrey Wong, RENS Margaret agorio, REHS <br /> LOP/Site Mitigation Unit IV Supervisor 15I <br /> F <br /> CC: PHS/EHD - Lori Duncan <br /> I� <br /> l <br />