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4 i <br /> AM <br /> P <br /> _i e._ + <br /> 1 [ :j �i �` p �..� <br /> NMA <br /> Working To Restore Nature <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br /> FAX (209) 838-3509 <br /> May 19, 1994 <br /> Mr Harlin Knoll <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P O Box 2009 <br /> Stockton, CA 95201 <br /> Subject Second Quarter 1994 Monitoring Report for San Joaquin Catholic <br /> Cemetery, Harding Way and Cemetery Lane, Stockton, California, <br /> (County Site Code 1582) <br /> Dear Harlin <br /> On Apnl 27, 1994, groundwater monitoring was conducted at the above referenced site on wells <br /> MW1, MW2, and MW3 (Figure 1) During monitoring, the depths to water were measured, <br /> the wells were purged and samples were collected pursuant to RESNA's Quality <br /> Assurance/Quality Control Plan Well purge logs and monitoring data are included in <br /> Attachment 1 <br /> Groundwater levels have risen an average of 9 43 feet in the wells since the January 1993 <br /> monitoring Groundwater monitoring data is summarized 1n Table 1 The gradient on Apnl 27, <br /> 1884 was calculated to be in a north-easterly direction at 0 001 ft/ft, which is more easterly than <br /> in January 1993 (Figure 2, Groundwater Gradient Map) <br /> Samples collected were analyzed for benzene, toluene, ethylbenzene, and xylenes (BTEX), and <br /> total petroleum hydrocarbons as gasoline (TPHg) utilizing EPA method 5030/8020/8015 <br /> Dissolved petroleum hydrocarbons were detected in monitoring wells MW1, MW2, and MW3 <br /> Analytical data is presented in Table 2 The laboratory data sheets and chain-of-custody <br /> documentation are included in Attachment 2 Laboratory analyses were conducted by Sequoia <br /> Analytical Laboratories, Cal EPA, FLAP Certification No 1210 <br /> 1500411QUARTLY12QR 1994 rNL <br />