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Mr Chuck Carmel <br /> October 22, 1992 <br /> Page 2 <br /> W = Q x C x 120 x 10-5 <br /> where. <br /> Q = Average flow rate, gpm <br /> C = Concentration, pg/1 <br /> W = Average amount of chemical discharged, lbs/day <br /> 1 20 x 10-5 = (minutes/day x lbs/gallon)/1,000,000,000** <br /> W = 3 36 x 10-5 x C for Q = 2 8 gpm <br /> **Use 1,000,000 for determination of average lbs/day of TPH <br /> The next monthly status letter will include the interval August lb through September 15, <br /> 1992 <br /> Please call me at (916) 444-0123 if you have any questions regarding the groundwater <br /> extraction system at ARCO Station 2133. <br /> Sincerely, <br /> BROWN AND CALDWELL CONSULTANTS <br /> as �W <br /> Steven D. Misner awrence E. Phidlhp <br /> Project Manager California Registered Geologist #3710 <br /> SDM:LEP-.jrb <br /> Enclosure <br /> cc: Ms. Mary Meays, San Joaquin County <br /> Ms. Elizabeth Thayer, Regional Water Quality Control Board <br /> Mr. Frank Tucker, City of Stockton <br /> Mr. Chns Wmsor, ARCO Products Company <br /> Brown and Caldwell .04 L,s <br /> Consultants <br />