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PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COCNTY <br /> JOGI KHANNA NKD., M.P.H. <br /> Health Officer <br /> c9 ' • . . ra�P <br /> P.O. Box 2009 • ( 1601 East Hazelton Avenue) • Stockton, California 95201 � l F d n <br /> (209) 468-3400 <br /> �J lJ U <br /> STEVE JERKINS <br /> SUPERINTENDENT OF ENGINEERING <br /> CRYSTAL CREAMERY AND BUTTER COMPANY <br /> P O BOX 1313 NOV 10 1993 <br /> SACRAMENTO CA 95806 <br /> RE: Crystal Creamery and Butter Company SITE CODE: 2098 <br /> 404 W. Fremont Street, Stockton <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS-EHD) has reviewed the <br /> February 1993 Quarterly Monitoring Report prepared by Wallace-Kuhl & Associates for the above referenced <br /> site. <br /> In this quarterly report, Monitoring Well 1 was reported to have free product present and upon sample <br /> analysis the following levels of contaminants were confirmed: TPHg 20000 ppb, THPd 1300 ppb, Benzene 180 <br /> ppb, Toluene 63 ppb, Ethyl Benzene <25 ppb and Xylene 7700 ppb. Monitoring Well 4 was sampled and upon <br /> analysis the following levels of contaminants were confirmed: TPHg 11000 ppb, Benzene 1100 ppb, Toluene <br /> 850 ppb, Ethyl Benzene 280 ppb and Xylene 800 ppb. Monitoring Well 2 was sampled and upon analysis the <br /> following levels of contaminants were confirmed: TPHg 69 ppb, Benzene .51ppb, Toluene .83 ppb, Ethyl <br /> Benzene < .3 ppb and Xylene < .5 ppb. The level of contamination evidenced in MW4 and MW-4 indicate <br /> the horizontal and vertical extent of the groundwater contamination has not been defined at this time. <br /> Additional wells must be installed to physically define the plume of groundwater contamination. <br /> There has been no further sampling of the monitoring wells at the site since the one time sampling event <br /> which occurred January 22, 1993, the results of which are present in the February 1993 Quarterly Monitoring <br /> Report. Pursuant to Section 2652(d) of the Underground Storage Tank Regulations (California Code of <br /> Regulations, Title 23, Chapter 16) a quarterly monitoring report shall be submitted to PHSJEHD and the <br /> Central Valley Regional Water Quality Control Board (CVRWQCB) until the investigation and cleanup of <br /> the site is deemed adequate. The report is to show: <br /> - status of investigation and cleanup activities including the results of all investigations <br /> completed to date; <br /> - proposed continuing or next phase of investigation; <br /> - method of cleanup proposed or implemented, schedules for the completion of the <br /> investigation of the site and remediation; <br /> - method and location of disposal of the released hazardous substances and any <br /> contaminated soil, groundwater, or surface water; <br /> - manifest required for transport of hazardous substances; <br /> - monitoring well data including groundwater elevation, ph, conductivity, gradient; <br /> - analytical results of groundwater or soil sampling; <br /> - site map showing the "zero line" of contamination, if known, and changes in the above <br /> measurements over the last quarter. <br /> A Division of San Joaquin Counry Health Care Semcm 101 <br />