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ENVIRONMENTAL <br /> i . <br /> Analytical Chemists <br /> a <br /> June 9, 1997 <br /> ORGANIC Quality Assurance Report for sample: 732999 <br /> San Joaquin County Health Dept a <br /> P.O. Box 2009 <br /> Stockton , CA 95201 <br /> BATCH EPA <br /> Constituent [D CALIBRATION QA/GC <br /> METHOD QA/0C <br /> Method !!nits Type Conc. % REC AR NOTE Type Colic. X REC X REC. AR X DIF MAV NOTE 1 N <br /> BFB ---OL 2A 602/8020 ug/L LCS 20.0 81.8 77-113 HS _20.0Berzesro=- -OL-2T 602 106 <br /> _- 102_61-130. ,.345 -7.2a �. e�u _ . u <br /> 77119 MS 20.0 -292 -309 70-122 2.0 12.7 470 <br /> Ethyl Benzene OL 2A 602/8020 ug/L LCS 20.0 81.6 79-120 M5 20.0 84.4 69.3 77-119 3.3 6.0 410 <br /> Methyl tert-Butyl Ether 0L 2A 60218020 ug/L LCS 20.0 702 713-130 MS 20.0 68.6 60.1 61-140 10,4 20.0 410 <br /> Toluene OL 2A 602/8020 ug/L LCS 20.0 83.5 81-113 MS 20.0 82.5 81.6 73-121 1.1 74.2 <br /> xylene OL 2A 6O2/8020 ug1L LCS 60.0 82.3 78-778 MS 60.0 77,9 74,6 7T-420 3.3 12.T 410 <br /> r <br /> G. [D a 19970530 N/A => Not Applicable NOTE _o, See note indicated be{ow. � <br /> Notes: <br /> O <br /> z <br /> 300 The recovery is within EPA method limits, batch accepted. <br /> 410 Matrix Spike (MS) not within Acceptance Range (AR) and/or Relative Percent Difference (RPD) not within <br /> Maximum Allowable Value (MAV). Batch qualified based on the LCS, CCV, .or ICV recovery. - r <br /> 1 <br /> I=GR ENVIRONMENT A , INC. <br /> CJ:jgc <br /> Charles Jolt on,: B.S. QA/QC. Off icer. .. .. . <br /> P.O.Bax 2721853 Co ,alon Street �Ca L�7t o <br /> Santa Paula CA 93Q6�-0272 ptudcS CSA 9 hoad <br /> TERY�88dia�Ca $ <br /> L-(805)859.0110 ; 209)734.9473 <br /> FAIL-{805)525-qi T2 TEL {209}942-0181 T��( <br /> -- - -- FAX:(229)942-0423 Mobile:(209)737-2399 <br /> FAX_INP)-Md_ada5 <br />