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J 1 ' <br /> Mr Michael J. Infurna <br /> January 12, 1993 <br /> Page 2 <br /> GLI will continue the groundwater monitoring program consisting of monthly <br /> -groundwater level measurements-and quarterly groundwater- sampling at this location <br /> for a total period of one year to determine whether groundwater has been impacted at <br /> the site <br /> The January site monitoring visit was conducted on January 6, 1993 The next <br /> sampling event will be conducted during the month of March 1993 You will be <br /> notified at least one week prior to the sampling event so that a representative can be on- <br /> site during sampling A quarterly status report will be prepared and submitted to your <br /> department on or before April 17, 1993 Greyhound will be implementing the <br /> supplemental site investigation as approved by the San Joaquin County Department of - M <br /> Public Health Services during the week of January 18, 1993 <br /> Please direct any questions or comments that you have about the December <br /> Quarterly Status Report to GLI If you have questions or require any additional <br /> information, please call us at (315) 451-9560 <br /> Sincerely, <br /> ENGINEERING-SCIENCE, INC <br /> Q"yI teCJS <br /> L <br /> _ r David A- Nickerson _ <br /> Project Manager <br /> David L `Chaffin, R G <br /> California Registered Geologist <br /> (No 4885) <br /> DLC/DAN/tcc <br /> cc T Portele, GLI, Dallas, TX <br /> Elizabeth Thayer, Regional Water Quality Control Board <br /> Laurie A Cotulla, EHD, Program Manager <br /> r <br /> • <br /> LML/SY 139 311378 <br />