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PUBLIC HEALTH SERVICES a <br /> Op4yt N^ C <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto , M. D. , M.P . H . , Acting Health Officer <br /> 445 N. San Joaquin Street • P. O. Box 388 • Stockton, CA 95201-0388 c9 �lFSaN P <br /> 209/468-3420 <br /> STEVE JERKINS <br /> SUPERINTENDENT OF ENGINEERING ILErc- �u( <br /> CRYSTAL CREAMERY AND BUTTER COMPANY <br /> PO BOX 1313 <br /> SACRAMENTO CA 95086 <br /> ��T� ' G � `i99�1• <br /> RE: Crystal Creamery and Butter Company SITE CODE: 2098 <br /> 404 W. Fremont St. , Stockton <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) has <br /> reviewed the September 2 , 1994 and the October 7, 1994 Quarterly Monitoring Reports <br /> Submitted by Wallace Kuhl and Associates , Inc . for the above referenced site . <br /> The report discusses the site history , the recent installation of MW-5 and MW-6 , and the results <br /> of sampling which occurred on May 5 , 1994, and summarizes work to date . <br /> The conclusion of the report based upon the soil data presented in the report is that contaminated <br /> soil is present in the immediate vicinity of the former UST . The vertical extent of the <br /> contamination is between 18 feet and groundwater which is present at approximately 27 feet. <br /> This is based on floating hydrocarbons observed in MW- 1 . <br /> The lateral extent of the soil contamination in the immediate vicinity of the former UST has not <br /> been determined at this time . The lateral and vertical extent of the contamination must be <br /> identified to determine the mass balance of the contamination. The mass balance is required to <br /> establish the feasibility of removing the contamination or the risk of leaving the contamination <br /> in place and possibly contributing to the floating hydrocarbons observed in MW- 1 . <br /> PHS/EHD has determined that the monitoring well data shows that MW-5 and MW-6 are on the <br /> outside fringe of the plume. The levels of contamination in MW-3 indicate offsite contamination <br /> is present at this location. A zero line has been established by MW-2 . There is no data south of <br /> the former UST location. <br /> The lack of groundwater data south of the former UST location is due to the inaccessibility to <br /> the southern property boundary . The report recommends sampling an existing monitoring well <br /> present on the northern property line of the property adjacent to the southern boundary of the <br /> site or drilling a new well in order to obtain information on the water quality of the aquifer <br /> upgradient of the Crystal site. <br /> A Division of San Joaquin County Health Care Services <br />