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N i <br /> McBillin Real Estate Investment Property Page 2 of 2 <br /> 2154 South EI Dorado Street October 28, 2013 <br /> Stockton , California 95206 <br /> amyl methyl ether (TAME) , di-isopropyl ether (DIPE) , tertiary butyl alcohol (TBA) , <br /> 1 , 2-dibromoethane (EDB) and 1 , 2-dichloroethane (1 , 2-DCA) ; and <br /> • Submittal of a report of findings following the well installations, development and survey, <br /> and quarterly reports documenting the groundwater monitoring events . <br /> The EHD approves the work plan as submitted ; however, the EHD believes that two additional <br /> monitoring wells are needed , one adjacent to GW-4 , and one adjacent and west of GW-8. High <br /> concentrations of contaminants of concern were detected in grab groundwater samples <br /> collected from GW4 and GW-8 in 2008, and the EHD considers these two additional wells <br /> necessary to delineate the plume to the north and south. After one year of sampling these five <br /> wells quarterly, collect groundwater samples semi-annually for laboratory analysis. <br /> Submit a permit application , Master File Record form , Licensed Contractor's Declaration form <br /> and permit/inspection fees to the EHD and complete the well installation by 23 January 2014. <br /> If you have any questions regarding this letter, please contact Vicki McCartney at (209) 468- <br /> 9852, or by email at vmccartney(c�sicehd.com <br /> Sincerely, <br /> Victoria L. McCartney, REHS Nuel C . Henderson , Jr. , PG <br /> Senior Registered Environmental Health apartment Engineering Geologist <br /> c: Mr. James L. L . Barton , PG, California Regional Water Quality Control Board Central Valley <br /> Region , 11020 Sun Center Drive, Suite 200 , Rancho Cordova, California 95670 <br /> Mr, Timothy J . Cuellar, Advanced GeoEnvironmental , Inc. , 837 Shaw Road, Stockton , <br /> California 95215 <br />