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** SPL BATCH QUALITY CONTROL REPORT ** PACHOUSTON LABORATORY <br /> CA LUFT 8880 INTERCHANGE DR;VE <br /> (D HOUSTON, TEXAS 77054 <br /> ?HONE(713)660-0901 <br /> Matrix: Aqueous Batch Id: HP_J96042808550o <br /> Units: mg/L <br /> L A B 0 R A T O R Y C O N T R O L S A M P L E <br /> S P I K E Method Spike _ Blank Spike QC Limits(+}} <br /> C 0 M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> t k-Recovezy=Range <br /> Petroleum Hydrocarbons-Gas ND 0.9 0.72 80.0 50 - 150 <br /> M A T R I X S P I K E S <br /> S P I K E Sample Spike Matrix Spike Matrix Spike MS/MSD QC Limits(***) <br /> C O M P O U N D S Results Added Duplicate Relative ; _ (Advisorv) <br /> Result Recovery Result Recovery Difference RPD - <br /> <2> <3> c1> <4> cl> c5> Max. Recovery Range <br /> PETROLEUM HYDROCARBONS-GAS ND 0.9 0.76 84.4 0.74 82.2 1 2.64 50 SO - 150 <br /> Analysts AA * values Outside QC Range <br /> Sequence Date: 04/28/96 NC - Not Calculated (Sample exceeds spike by factor of 4 or more; <br /> SPL ID of sample spiked: 9604A96-13A ND . Not Detected/Below Detection Limit <br /> Sample File ID: JJ 419.TXO t Recovery = (( <1> - <2> } / <3> 1 x 100 <br /> Method Blank File ID: LCS 4 Recovery = (<l> / <3> } x 100 <br /> Blank Spike File ID; JS_415.TX0 Relative Percent Difference 1 (<4> - <5> f / ((<4> + <5> } x 0.53 x 100 <br /> Matrix Spike File ID: JJ_416.TX0 [**1 n Source: Temporary Limits <br /> Matrix Spike Duplicate File ID: JJ-417.TXO (***) o Source: Temporary Limits <br /> SAMPLES IN BATCH SPL ID) -. 9604A30-08A 9604834-18A 9604A84-01A 9604841-19A <br /> 9604A96-13A 9604A64-OSA 9604A43-07A 9604A43-08A <br /> 9604A43v09A—9604A43-t0AR9604A43=11A7-9604A43712A <br /> 9604A04-04A <br /> 1 <br /> I <br /> ,l <br /> QC Officer <br />