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Intertek Testing Services <br /> Environmental Laboratories <br /> 1 <br /> REPORT DATE 19-MAY-1997 REPORT NUMBER D97-5618 <br /> ' SAMPLE SUBMITTED BY ITS/San Jose <br /> ATTENTION Todd Geringer <br /> PROJECT . 544 299600 <br /> ' LABORATORY QUALITY CONTROL REPORT <br /> ANALYTE Benzene Ethylbenzene Ferrous Iron Methane Ethane <br /> BATCH NO 35-051397 35-051397 084025 F050997-1 F050997-1 <br /> LCS LOT NO AC033-20A AC033-20A 098010A --- --- <br /> PREP METHOD --= ___ _=_ <br /> PREPARED BY <br /> ANALYSIS METHOD EPA 8021 Mod EPA 8021 Mod SM 3500-Fe D RSK 175 RSK 175 <br /> ' ANALYZED BY JCH JCH BAF S—S S S <br /> UNITS k9/L. µ9/L mg/L ppbw ppbw <br /> METHOD BLANK < 2 00 < 2.00 < 0 0500 < 0 500 < 0 500 <br /> ' SPIKE LEVEL 20 0 20 0 2 00 3 68 6 93 <br /> SPK REC LIMITS 77 0 - 123 63 0 - 137 80 0 - 120 70 0 - 130 70 0 - 130 <br /> SPK RPD LIMITS 25 0 25 0 10 0 30 0 30 0 <br /> MS RESULT 22 9 24 4 NS NA NA <br /> MS RECOVERY % 115 122 NS NA NA <br /> MSD RESULT 23 2 24 7 NS NA NA <br /> MSD RECOVERY % 116 124 NS NA NA <br /> MS/MSD RPD % 1 30 1 22 NS NA NA <br /> BS RESULT NA NA 1 99 3 24 6 29 <br /> BS RECOVERY % NA NA 99 5 88 0 90 8 <br /> BSD RESULT NA NA 1 93 3 23 6 69 <br /> BSD RECOVERY % NA NA 96 5 87 8 96 5 <br /> BS/BSD RPD % NA NA 3 06 0 31 6 16 <br /> OUP RPD LIMITS --- --- --- --- --- <br /> DUPLICATE RPD % NA NA NC NA NA <br /> LCS LEVEL 20 0 20 0 2 00 3 68 6 93 <br /> LCS REC LIMITS 70 0 - 123 63 0 - 137 80 0 - 120 70 0 - 130 70 0 - 130 <br />' LCS RESULT 21 7 22 4 1 95 SEE—BS SEE—BS <br /> LCS RECOVERY % 109 112 97 5 SEE—BS SEE BS <br /> SPIKE SAMPLE ID 5618-1 5618-1 --- --- --- <br />' SAMPLE VALUE c 2 00 < 2 00 --- --- --- <br /> CUP SAMPLE ID --- --- 5618-4 -- --- <br /> DUP SAMPLE VAL/1 --- --- LL+ J _--_- _ <br /> DUP SAMPLE VAL/2 <br /> NA Not appticable <br /> NS InsufficTent sample avaTtabte for MS/MSD. BS/BSD used <br />' NC — Not calculable <br /> SEE BS LCS and LCS Dupticate reported as BS and BSD <br /> Intertek Testing Services NA Inc <br /> 1089 East Collins Boulevard Richardson, TX 75081 <br /> Telephone (972) 238-5591 Fax (972) 238-5592 <br />