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. SEPTEMBER 1993 SEWER DISCHARGE REPORT
<br /> _ GROUND WATER PUMPING SYSTEM WITH DISCHARGE TO SEWER
<br /> i C.M WEBER ENTERPRISES
<br /> 141 N EL DORADO STREET, STOCKTON, CA
<br /> AVERAGE WATER DISCHARGE TO SEWER FOR SEPTEMBER 1993 8 5 GPM
<br /> Monitoring/ Time Ground Pumping Discharge* TotalTotal Discharge Sameling Point Concentrations in micro rams/liter
<br /> Sampling Water Wells to Sewer Flowmeter to Sewer _ Sewer Discharge
<br /> Date S stem m) Reading (gallons) Samplinig Constituents Benzene Toluene Ethyl Total TPH
<br /> Status ( allonsl benzene x
<br /> 3/2/93 ON RW-1 & RW-2 9 0
<br /> 3/18/93 ON RW-1 & RW-2 79 209 608 209 608 STEX, TPI-Ig, TTO, 16 20 33 120 510
<br /> Total Cadmium, Copper,
<br /> Lead Nickel Silver, Zinc
<br /> 4/8193 ON RW-1 & RW-2 76 441,347 441,347 BTEX, TPH 17 42 48 180 660
<br /> 4/27/93 4 30 PM ON RW-1 & RW-2 75 643 729 643,729 BTEX, TPH 19 38 B7 220 970
<br /> 5/11/93 10 30 AM ON RW-1 & RW-2 735 790,744 790,744 BTEX TPHg 12 42 65 220 830
<br /> 5/26/93 5 10 PM ON RW-1 & RW-2 9 25" (Flowmeter 973,344"• BTEX TPHg 18 53 74 270 980
<br /> batter dead/
<br /> 6/10193 10 50 AM ON RW-1 & RW-2 842 {battery 1,138,621 BTEX TPHg 23 54 981 340 1,300
<br /> rephced
<br /> 10 40 00 AM'""
<br /> total»0)
<br /> 6/23/93 8 53 AM ON RW-1 & RW-2 858 159 845 1,298,466 BTEX T18 61 95 350 1,300
<br /> (battery
<br /> replaced
<br /> ata53AM
<br /> total = 0)
<br /> 7/6/93 3 30 PM ON RW-1 & RW-2 868 160,628 1,459,094 BTEX TPI-Ig 23 47 37 340 1,100
<br /> 7/20/93 11 10 AM ON RW-1 & RW-2 837 333 936 1,632 402 BTEX, TPHg 18 30 71 280 1,400
<br /> 8/3/93 12 05 PM ON RW-1 & RW-2 909 514,851 1,813,317 BTEX, TPHg 16 31 791 300 9,400
<br /> 8/17/93 7 35 AM ON RW-1 & RW-2 8 63 688 092 1,986,558 BTEX, TPHg 14 22 70 260 1,000
<br /> 9/1/93 11 40 AM ON RW-1 & RW-2 8 99 879,359 2,177,825 BTEX, TPH , TTO °'° "• 21 23 77 270 1,300
<br /> (see attached laboratory reports)
<br /> 9/14/93 9 38 AM ON RW-1 & RW-2 802 1,073,760 2,372,226 BTEX, TPH
<br /> (see attached laboratory report) 14 20 6 250 1,200
<br /> Notes
<br /> Ground water recovery system operation commenced on 3/2/1993
<br /> Existing soil venting operation commenced on 6/23/1993, after replacement of activated carbon
<br /> m = gallons per minute
<br /> • Flowmeter/totalizer reading
<br /> •*Pumping rate calculated b "bucket and stopwatch method" (average of 6 triais to fill up a 5 anon bucket)
<br /> Batteg on flow meter dead Battery will be replaced during next site visit Total discharge calculated by averaging pumping rates on 5/11 and 5/26/93
<br /> ••'•Corrected time of battery replacement Incorrectly reported as 8 53 AM in June 1993 report
<br /> "°'091,2-Dichloroethane Trichloroethane, Vinyl chloride, Napthelene above laboratory method detection limits However TTO concentration is less than
<br /> permit discharge limit of 4 57 mg/I
<br /> BTEX = benzene, toluene, eth (benzene, total xylenes
<br /> ,TPHg total petroleum hydrocarbons as gasoline
<br /> TTO = total toxic organics
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