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E � I <br /> I <br /> sr I I I <br /> IK <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater, CA 95301 Phone (209) 384 2930 <br /> Certificate No 2079 <br /> Fax {2091 384-1507 r I r <br /> ' f i � I � - .I <br /> Advanced GeoEnvaonmental, Inc Client Project ID Flag City Chevron Method TPH-Diesel <br />' of Northern California Reference Number 2298 Instrument ID HP-GC1 ;' I <br /> 4005 North Wilson Way Matrix Water y Prepared 6-9 99, <br /> Stockton CA 95205 Analyst JEm'Phdhps Analyzed 6-9-99 ' <br /> Ann Tim Cuellar _ Reported 6-15-99 <br /> QUALITY CONTROL DATA REPORT <br /> l I s <br /> Y <br /> ANALYTE TPH-Diesel <br /> Spike Concentration^ 250 <br /> UnitsY }« <br /> I <br /> ug/L <br /> LCS Batch # TPHDW-6099 ' <br /> f <br /> LCSA % Recovery 720% .° <br /> s <br /> LCSB % Recovery 670% <br /> lie ! <br /> " - { <br /> E <br /> Control Limits 55-130 % ' <br /> L <br /> Relative % Difference 7 23% _ <br /> MS/MSD Batch # TPHDW 6099 <br /> a ' <br /> r <br /> MS % Recovery See Note <br /> i MSD % Recovery See Note <br /> ` Relative % Difference See Note 1 <br /> ' r <br /> Note Insufficient sample material to prepare MS/MSD samples LCS samples prepared in duplicate 5, <br /> The LCS (Laboratory Check Sample] is a control sample of known interferent free matrix that is fortified with representative analytes and <br /> analyzed using the same reagents, preparation and analytical rn'ethods employed for the samples ' The LCS % recovery is used for validation <br />' of sample batch results Due to matrix effects, the QC limits and recoveries for MS/MSD's are advisory only,and are not used to accept or <br /> ' refect batch results w <br /> , <br /> � f <br /> r ANALYST �(/ ( `'_ 7�� APPROVED BY <br /> Clair J Cone r i Jams C Phillips <br /> -'Environmental Lab Director <br /> Y 1 <br /> 4. <br />