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a amvisioxr of <br /> ENVIRONMENTAL SOLUTIONS I 1 1 (.7 <br /> c <br /> August 10, 1998 <br /> Project 20805-140 010 <br /> Ms Margaret Lagorio <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber, Third Floor <br /> PO Box 388 <br /> Stockton, California 95201 <br /> Re Workplan for Onsite Well Installation Activities at the Former ARCO Service <br /> Station No 548, Located at 1512 West Hammer Lane, Stockton, California <br /> Dear Ms Lagorio <br /> On behalf of ARCO Products Company (ARCO), Pinnacle Environmental Solutions <br /> (Pinnacle), a division of EMCON, is submitting this workplan for onsite well installation <br /> activities at the former ARCO Service Station No 548, located at 1612 West Hammer <br /> Lane, Stockton, California (see Figure 1) The scope of work was developed after <br /> reviewing results of the underground storage tank (UST) removal and compliance soil <br /> sampling presented in Pinnacle's "Underground Storage Tank Removal Report," dated <br /> April 30, 1998, and your letter dated June 18, 1998, regarding additional site <br /> characterization requirements At this time, ARCO intends to keep monitoring well MW-3 <br /> in service Previously proposed assessments included a task for decommissioning MW-3 <br /> SCOPE OF WORK <br /> The scope of work is contains the following tasks <br /> Task 1 Prefield Activities <br /> *ENVIRONMENTAL HEALTH DIVOWN <br /> Task 2 Installation of Air Sparge (AS) and Soil Vapor EN�WlgoW6b~f Aka Flow <br /> P O Box 388 SIOdctOn CA g I-03M <br /> Task 3 No Purge Sampling of SVE Wells 1 PROPOSAL APPROVED SUBJECT TO <br /> A Obta no sartaaten pemw <br /> Task 4 Laboratory Analysis B Ohtani wentpump pemw El <br /> C Cnange not <br /> Task 5 Data Evaluation and Reporting 2 PROPOSAL DENIED <br /> 3 REMARK <br /> iI tt S <br /> SAC"A�5480N DOC-951mtt 1 1 by L&Ad&=2-6- <br /> 3939 Cambridge Road,Suite 220 Camsron Park California 95682 (530)676 6884 (530)676 6885 Fax <br />