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COLUMBIA ANALYTICAL SERVICES INC <br /> analytical Report <br /> Client EMCON Associates Date Received 11/30/93 <br /> Project EMCON Project No OG71-029 01 Service Reouest No SJ93-1453 <br /> ARCO Facility No 2130 Sample Matrix 'Vater <br /> BTEX and TPH as Gasoi-r- <br /> EPA Methods 503013020/California D"S LUFT Methoa <br /> ,rg/L (ppb! <br /> Sample Name MW-1 (73� MW-2 (71) MW-3 (72) <br /> Date Analyzed 12106193 12/06/93 12106x93 <br /> Analyte MRL <br /> Benzene 0 5 230 23 5 1 <br /> Toluene 0 5 12 3 3 ND <br /> Ethylbenzene 0 5 11 13 ND <br /> Total Xylenes 0 5 15 a 5 , g <br /> TPH as Gasoline 50 1 200 1 100 120 <br /> Sample Name MW-5 (75) MW-6 (72) MW-7 (72) <br /> Date Analyzed 12107193 12!07,93 12106/93 <br /> Analyte MRL <br /> Benzene 0 5 1 900 SND ND <br /> Toluene 0 5 370 ND ND <br /> Ethvlbenzene 0 5 140 ND 1�1D <br /> Total Xylenes 0 5 1 300 ND �!D <br /> TPH as Gasoline --0 9 500 1 ,0 D <br /> ' This sample was part of the analvticai batch started :^ December r 7 � 9....nn <br /> e i However it was <br /> analyzed after midnight so the dual date anaivze❑ is =acember 8 1993 <br /> l ' <br /> Approved by IL Date r <br /> 3 <br />