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a division of ��f <br /> ENVIRONMENTAL SOLUTIONS _ FmcOR 0 <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 1612 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 DIVISION <br /> Task 2 Installation of Air Sparge (AS) and Soil Vapor E)gWtoP/6bWr1j�feyHjd Fbor <br /> PO Box 388, Stockton, CA 9SMI4) 88 <br /> Task 3 No Purge Sampling of SVE Wells t PROPOSAL APPROVED SUBJECT TO. <br /> A Obtaining sanitation Demo ❑ <br /> Task 4 Laboratory Analysis B Obtain welUputnp penTM <br /> C Change noted <br /> 2 PROPOSAL DENIED <br /> Task 5 Data Evaluation and Reporting 3 REMARKS NO LAZ <br /> , t-of cz4vk z <br /> SACW:\548OIV.D0C-95\mtt:1 - -�by - <br /> 3939 Cambridge Road, Suite 220 Cameron Park, California 95682 (530) 676-6884 (530) 676-6885 Fax <br />