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Mr Kyle Christie Project 0805-144 02 <br /> . July 28, 1995 <br /> Page 3 <br /> been detected in the monitoring wells since the monitoring program began in October <br /> 1992, with the exception of MW-3, which contained total xylenes at a concentration of <br /> 0 7 ppb during fourth quarter 1993 Based on current and historical data, EMCON <br /> recommends the morutoring frequency be reduced to an annual basis <br /> DOCUMENT DISTRIBUTION <br /> We recommend signed copies of this report be forwarded to <br /> Mary Meays <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P O Box 388 <br /> Stockton, California 95201-0388 <br /> Elizabeth Thayer <br /> California Regional Water Quality Control Board <br /> . Central Valley Region <br /> 3443 Rouuer Road <br /> Sacramento, California 95827-3098 <br /> Please call if you have questions regarding this report or any aspect of the project <br /> Sincerely, - �-D GEp,0 <br /> EMCON <br /> G ;�O 5a67 <br /> Claudio Avila ay J nson <br /> Project Geologist Sento oject Supervisor f�r��OF <br /> R G 67 � _ <br /> i <br /> Attachments Table 1 Groundwater Monitoring Data <br /> Figure 1 Site Location Map <br /> Figure 2 Generalized Site Plan <br /> Figure 3 Groundwater Contour Map (May 15, 1995) <br /> Attachment A Sampling and Analysis Procedures <br /> Attachment B Chain-of-Custody Records and Laboratory Analysis <br /> Reports <br /> SAOWM80"8051440 261-951fc 2 <br />