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707 Yosemite,Manteca <br /> Chronology <br /> Page 2 <br /> 01/24/01- -Five soil probe borings P-7 to P-11 were advanced at the site. Analytical results of <br /> the grab groundwater sample from P-9 indicated presence of low level of <br /> hydrocarbons and MTBE. <br /> 01/30/02 Three monitoring wells were installed at the site <br /> 01/30/02 EHD received a 2,000-foot sensitive receptor survey dated 01/25/02. The survey <br /> identified two 390-foot bsg Manteca m nicipal wells 2,000 feet from the site,and <br /> one 216-feet Manteca municipal well 2,100 feet from the site. <br /> 04/15/02 Date of report of January 2002 monitor g well installation. <br /> 12/24/02 4 quarters of sampling have been conducted. All results were non-detect with the <br /> exception of 3�d quarter 2002,where 0.6 ug/l of MTBE was detected in MW-2 <br /> using EPA Method 8260. MTBE was not detected again. <br /> 02/10/03 AGE submitted to EHD a mass volume calculation of 0.37 gallons of gasoline <br /> remaining in the ground. <br /> 06/26/03 EHD received from AGE a door-to-do 3r receptor survey within 500 feet. 45 <br /> residences responded. No additional re eptor was identified. <br /> i <br /> i <br /> i <br />