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l; <br /> PUBLIC HEALTH SERVICES 4C, <br /> SAN JOAQUIN COUNTYJ(XA (:HANNAAl D hi P H <br /> Health Officer a <br /> P O Sox 2009 � (!601 East Hazelton Avenue) <br /> Stockton, CalLforma 9520! 4L►FOR ' <br /> (209) 468-3400 <br /> i <br /> r <br /> ' u <br /> MR BUD GOOD <br /> SOUTHLAND CORPORATION AUL. O 19 ' <br /> 5820 STONE RIDGE RD STE 310 <br /> PLEASONTON CA 94566 <br /> RE: 9110 Thornton Rd, SITE CODE: 1866 <br /> Public Health Services Environmental Health Division (PHS/EHD) <br /> has reviewed both the P o asal or Site Clean= Confirmation <br /> dated May 5, 1992 and the Protect Quarterly -Update Repo dated <br /> May 11, 1992 . The following comments will address issues which <br /> have arisen as a result of the contents of these documents. <br /> 1. The low petroleum hydrocarbon concentrations which were <br /> detected in nine of the groundwater samples collected <br /> on February 24, 1992 and mentioned in the narrative <br /> sections of both documents were not supported with <br /> . laboratory data sheets. All testing and copies of <br /> laboratory data sheets (including method blanks) and <br /> the corresponding "Chain of Custody" shall be included <br /> in reports to PHS/EHD and Central Valley Regional Water <br /> Quality Control Board (CVRWQCB) . Please provide this <br /> missing data under addendum within 30 days of the date <br /> that appears on this letter. <br /> 2 . During the collection of water samples, each well <br /> should be purged until temperature, conductivity and pH <br /> stabilize as outlined in Appendix C of the Leaking <br /> Underground Fuel Tank (LUFT) field manual. These <br /> parameters should be recorded by the sampler and <br /> available upon request from either PHS/EHD or CVRWQCB. <br /> 3 . The quarterly report indicates that a well-water bailer <br /> was lost in MW 9 . Efforts to remove the lost bailer or <br /> replace this well need to be addressed prior to the <br /> next sampling event. <br /> 4 . The Chain of custody Record 119370, with six domestic <br /> well samples, was not signed by the relinquishing <br /> sampler. Please provide a signed copy under <br /> earlier mentioned addendum. <br /> • <br /> A Division of San Joaquin founry fieaith i are Scmcrs <br />