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I <br /> f <br /> URS <br /> Ms. Margaret Lagorio Page 2 <br /> LOP/Site Mitigation Unit <br /> San Joaquin County—Public Health Services <br /> Environmental Health Division <br /> March 16, 2001 <br /> A two-inch diameter groundwater monitoring well will be installed in the boring. The well will be <br /> constructed with five feet of two-inch diameter,Schedule 40,Polyvinyl chloride(PVC)casing with 0.010- <br /> inch machine slots and 25 feet of blank,two-inch diameter,Schedule 40 PVC casing. The slotted casing 4 <br /> will be installed in the bottom of the boring to assess the vertical extent of the groundwater contamination. <br /> The groundwater monitoring wells will be installed according to the procedures outlined in the URS { <br /> Workplan for Environmental Services at the California Highway Patrol Facility Located at 385 <br /> West Grantline Road in Tracy, California, dated March 13, 2000. <br /> } <br /> Following installation of the new wells,they will be surveyed to the same datum as the original three <br /> monitoring wells. The new wells will also be developed and incorporated into the next round of sampling. <br /> Development procedures will follow those outlined in the above mentioned workplan dated March 13, <br /> 2000. <br /> If you have any questions or require additional information,please contact Mr.Philip Cox at(916)679-2261. <br /> Sincerely, <br /> URS Corporation <br /> Philip Cox <br /> Project Manager <br /> s <br /> t <br /> Attachment I - Proposed Monitoring Well Location Map <br /> cc: Mr. A.K. Jain, RESD <br /> Ms.Ligaya Reyes-Ibanez } <br /> Mr. Homer Lin, RESD 1 <br /> Project File <br /> 11Sacdata2lWprocess114214102_Tracy"31601.wpd <br /> t <br />