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l <br /> PUBLICHEALTH SERVICES <br /> ?duin, <br /> SAN JOAQUIN COUNTY So. .ca <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor a P. O. Box 388 • Stockton' CA 9COO = 8 <br /> 209/468-3420 �Jt <br /> '!' 12 7996 <br /> JERRY MOORE <br /> MOORE PETROLEUM <br /> P O BOX 67 <br /> BANTA CA 95340 <br /> RE: Moore Petroleum SITE CODE: 1464 <br /> f 1399 E. Yosemite Avenue <br /> Manteca, CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has reviewed the ,Closure Request Report" dated July 1, 1996, <br /> prepared by Apex Envirotech, Inc. for the above 'referenced site and have the <br /> following comments. <br /> PHS/EHD concurs with the recommendation of no further action at this site. A <br /> copy of the letter to the Central Valley Regional water Quality Control Board r <br /> (CVRWQCB) reauesting concurrence is enclosed. If a concurrence letter is <br /> received or there are no comments from the CVRWQCB within 30 days of receipt <br /> of the PHS/EF-ID concurrence request, then the next step in the closure process E <br /> should be taken. The monitoring wells and vapor; extraction pining must be <br /> destroyed under permit and inspection by PHS/EHD. Please submit a plan for j <br /> their destruction, a permit application and $60 ''fee. once the. wells and <br /> extraction piping are destroyed, the final closure letter will be issued by <br /> PHS/EHD. <br /> The mass balance calculation for contamination e'videriced prior to remediation <br /> does not include the soil sample results obtained at the time the product <br /> tanks were removed. There was known soil contamination From 15 feet below F` <br /> grade to groundwater in the tank pit area. In addition, the iso-contour lines <br /> shown in the report are not conservative. - Contamination should be shown and <br /> calculated to the point where non-detect is confirmed. The lowering of <br /> concentrations by averaging between concentration lines further reduces the <br /> mass estimate. Also, the contamination evidenced in the groundwater should be <br /> estimated and added to the mass of sail contamination. PHS/El-M does not want <br /> time and money spent on recalculating contamination that has been remediated, <br /> applied to mass balance calculations on our <br /> but these comments should be pp Y <br /> other sites. <br /> If you have any questions contact me at (209) 46:8-3449. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> t <br /> Margare, Lagorio, REHS, Supervisor <br /> Site Mitigation Unit <br /> Enc. <br /> c: Apex Envirotech, Inc. <br /> C: CVRWQCB - James Brathode <br /> A Division of San Joaquin County Health Care Services <br /> I <br /> i <br />