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v <br /> Mr. Brian Walker -2- 11 September 1997 <br /> etc. Also, since the downgradient well has just been recently installed, sufficient data to show tliiat the <br /> site complies with criteria 1 and 4 are not yet available. The Board requires a minimum of four <br /> consecutive: quarters of either nondetection or a demonstration of plume stability which complies with <br /> criteria 1 and 4. American Savings Bank (ASB) must demonstrate that either of these conditions exists at <br /> the site. <br /> The report also states that the site was an auto repair shop from 1917 through 1956. Therefore, the <br /> monitoring program should include volatile organic compounds (VOCs), semi-VOCs, and metals in <br /> addition to fuel constituents. <br /> Enclosed is a draft monitoring and reporting program (MRP) which proposes the frequency of sampling <br /> and the constituents to be analyzed for the monitoring wells at the site. The proposed MRP will require <br /> quarterly measurement_of groundwater elevations referenced from.the mean sea level-and-quarterly <br /> sampling and analysis for total petroleum hydrocarbons as diesel or gas; benzene, toluene, ethylbenzene, <br /> and xylenes; halogenated VOCs; semi-VOCs; and dissolved metals. We anticipate issuing the MRP by <br /> mid-October, so please submit your comments on the draft MRP and your response to our comments on <br /> the closure request by 10 October 1997. <br /> If you have any questions, please call Phil Isorena at (916) 255-3049. <br /> PHIL S. <br /> Associate'Engineer <br /> PSI:psi <br /> cc: Mr. Nfichael Infurna, San Joaquin Public Health Services, Stockton <br /> Mr. Trevor D. Santochi, Santochi and Bravante, Newport Beach <br />