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SER ICESPUBLIC HEALTH PgUfN <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA M.D.,M.P.H. • <br /> Health Officer c •.. :P <br /> P.O. Box 2009 a (1601 East Hazelton Avenue) 0 Stockton, Caffomia 95201 <br /> (209)468-3400 <br /> L <br /> y <br /> SCOTT HOOTON u Li l� <br /> 16400 SOUTHCENTER PKWY APR 0 2 1993 <br /> TUKWILA WA 98188 <br /> RE: BP Oil Facility #11193 SITE CODE: 11.29 <br /> 3202 W. Hammer Lane <br /> Stockton, CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> has reviewed the "Preliminary Site Assessment Report" dated February 12, 1993 <br /> submitted by RESNA Industries, Inc. and has the following comments. <br /> A survey of wells within 2,000 feet of the site shall be initiated and included in your next <br /> report. This will identify any gradient influences and possible contaminant migration <br /> pathways. <br /> The soil and groundwater contamination shall be physically defined in order to design a <br /> proper remediation plan. This further definition should be accomplished by installing <br /> additional monitoring wells. Placement of these monitoring wells should be based on <br /> information obtained from additional water level measurements and gradient <br /> determination. In addition, the existing monitoring wells should be sampled to confirm <br /> the results from the December 21, 1992 sampling event. <br /> A workplan shall be submitted to PHS/EHD by May 10, 1993 to further define the <br /> lateral and vertical extent of soil and groundwater contamination. <br /> Pursuant to Section 2652(d) of the Underground Storage Tank Regulations (California <br /> Code of Regulations, Title 23, Chapter 16) a quarterly monitoring report shall be <br /> submitted to Public Health Services, Environmental Health Division and Central Valley <br /> Regional Water Quality Control Board (CVRWQCB) until the investigation and cleanup <br /> of the site is deemed adequate. The report is to show the: <br /> -status of investigation and cleanup activities including the results of all <br /> investigations completed to date; <br /> -proposed continuing or-next phase of investigation; <br /> A Division of San Joaquin County Health Care Services �� <br />