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Mr. Chuck Carmel <br /> December 3, 1992 <br /> Page 2 <br /> W = QxCx120x10-5 <br /> where. <br /> W = Average amount of chemical discharged, lbs/day <br /> Q = Average flow rate, gpm <br /> C = Concentration, pg/l <br /> 1.20 x 10"5 = (minutes/day x lbs/gallon)/1,000,000,000** <br /> W = 384x10'SxCfor Q = 32gpm <br /> **Use 1.,000,000 for determination of average lbs/day of TPH <br /> The next monthly status letter will include the interval October 16 through <br /> November 15, 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 /> ED G,r�'l� <br /> Nt •p <br /> =Managerd <br /> ner wr 7B. P ` <br /> Project Geologist #3710 <br /> gjFpA�LF" <br /> SDM:LEP:jrb <br /> Enclore <br /> cc s. Mary Meays, San Joaquin County <br /> Ms. Elizabeth Thayer, Regional Water Quality Control Board <br /> Mr. Frank Tucker, City of Stockton <br /> Brown and Caldwell <br /> Consultants <br />