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Mr Chuck Carmel <br /> September 21, 1992 <br /> Page 2 <br /> W = QxCx 120x 10`5 <br /> where <br /> Q = Average flow rate, gpm <br /> C = Concentration ug/l <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 72 x 10-5 x C for Q = 3 1 gpm <br /> **Use 1,000,000 for determination of average lbs/day of TPH <br /> The next monthly status letter will include the interval July 16 through August 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 /> 1`7 <br /> Steven D Misner Jay Lucas <br /> Project Manager California Registered Geologist #4301 <br /> SDM JL mkw <br /> Enclosure <br /> cc rMs Maty Mea_ys,-Sari Jdaqurn County <br /> Ms Elizabeth Thayer, Regional Wateir Quality Control Board <br /> Mr Frank Tucker, City of Stockton <br /> Mr Chris Wtnsor, ARCO Products Company <br /> 0 <br /> Brawn and Caldwell 6623\coxxEsr,6673-04 1.2 <br /> Consultants <br />