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~ PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> `. ENVIRONMENTAL HEALTH DIVISION A\ _ <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer •. <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 9521 .: <br /> tFoae <br /> 209/468-3420 <br /> JERRY MOORE APR 2 9 1597 <br /> MOORE PETROLEUM <br /> POBOX 67 <br /> BANTA CA 95340 <br /> RE: Moore Petroleum SITE CODE: 1502 <br /> 5491 "F" Street <br /> Banta, CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has reviewed the "First Quarter 1997 Groundwater Monitoring & <br /> Remediation Status Report" dated April 7, 1997 prepared by Apex Envirotech, <br /> Inc. for the above referenced site. <br /> The "Vapor Extraction Operating Data" Table 3 in the report indicates the hour <br /> meter reading on October 3, 1996 was 3731 and on December 17, 1996 the <br /> hour meter reading was 12052. The "Summary of Mass Extraction Rates <br /> Through Vapor Extraction" Table 4 indicates zero hours of operation between <br /> September 18, 1996 and December 17, 1996. The report nor the tables explain <br /> what occurred between September 18, 1996 and December 17, 1996 to have <br /> such a large increase in the hour meter reading and yet no hours of operation. <br /> Please provide an explanation in your next quarterly report. <br /> PHS/EHD concurs with the recommendation that the vapor extraction and air <br /> sparge systems be turned off. PHS/EHD requests that MW4 as well as MW1 be <br /> sampled quarterly and concurs with the recommendation that the other wells at <br /> the site be sampled annually. <br /> If you have any questions contact me at (209) 468-3449. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> 1-�� A,-� $I <br /> Margaret Lagorio, Supervising REHS <br /> Site Mitigation Unit <br /> �. c: C/VRWQCB - Beth Thayer <br /> Apex Envirotech <br /> A Division of San Joaquin County Health Cale Sen•ices <br />