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PUBLIC HEALTH SERVICES <br />SAN JOAQUIN COUNTY <br />ENVIRONMENTAL HEALTH DIVISION <br />Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br />304 E.Weber Ave., 3rd Floor • P. 0. Box 388 • Stockton, CA 95201-0388 <br />209/468-3420 <br />BETSY CURNOW <br />PLANNING AND ASSESSMENT SECTION CHIEF <br />US EPA <br />75 HAWTHORNE STREET <br />SAN FRANCISCO CA 94105-3901 <br />Re: Marlowe Property <br />CAD001009760 <br />Dear Ms. Curnow: <br />MAILED SEP 0 67995 <br />Thank you for the copy of the "Preliminary Assessment" report dated June 2, 1995. San <br />Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has <br />completed review and prepared the following comments for your consideration. <br />The report included a description of the Marlowe Property, but failed to correctly describe <br />the apparent problem, the regulatory involvement, the sources of contamination, and the <br />summary. PHS/EHD hopes that the corrections shown below will provide more accurate <br />information and that a re-evaluation of the site will occur. <br />Apparent Problem <br />In 1993 analytical results of groundwater samples collected from on site monitoring and <br />domestic wells and from two neighboring domestic wells indicated the presence of HVOCs <br />including 1,1 dichloroethene (1,1-DCE), Methylene Chloride, 1,2 Dichloroethane (t-1,2- <br />DCE), 1,1 Dichloroethane (1,1-DCA), Chloroform, 1,1,1 Trichloroethane (1,1,1-TCA), <br />Trichloroethene (TCE) and 1,2 Dichloroethene (c-1,2-DCA). <br />Regulatory Involvement <br />2.43 San Joaquin, Environmental Health Division. <br />In 1993, the EHD sampled the onsite domestic drinking-water well and the domestic wells <br />at 4716 Waterloo, 4514 Waterloo, 4795 Waterloo, 2120 Wilcox,and 2817 Cherryland for <br />TPH, BTEX, and HVOCs. <br />Sources of Contamination <br />The narrow definition of the site precluded the investigation of the operations associated <br />with the neighboring research facility, CalCeder. Also, it should be noted that other <br />businesses besides California Cedar Products and residences are located on Wilcox Road <br />(Figure 202 Site Layout). <br />A Division of San Joaquin County Health Care Services