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G) Sequoia <br />1111�0 Analytical <br />680 Chesapeake Drive Redwood Cir, CA 44063 (415) 364 9600 FAX (415 364 9233 <br />1900 Bates Avenue Suite L Concord CA 94520 (5 t0) 686 9600 FAX (5 10) 686 9689 <br />819 Sinker Avenue Suite 6 Sacramento CA 95634 (916) 921 9WO FAX (91ol 92; 0100 <br />Groundwater Technology <br />Client Protect ID <br />Chevron #9-2033, Stockton, CA <br />T Costello <br />401 Halyard Drive, Suite 140 <br />Matnx <br />Soil <br />25 ug/kg <br />25 ug/kg <br />LCS032395 <br />LCS032395 <br />1 <br />West Sacramento, CA 95691 <br />3/23/95 <br />3/23/95 <br />3/24/95 <br />} Attention Jason Fedota <br />OC Sample Goup <br />5031072-1109 Reported <br />Apr 4, 1995x; <br />GCHP-08 <br />76 <br />100 <br />by <br />v�^Mv s. <br />b r 1 }n{. nvYy n n }wr p-rv. +h vw4yv 4 +n v�vi.�i x n �� .vuu. 3vt iv }r ,n...ww •,v r{t} <br />rt.�rCvr w4 ��i ihv0 <br />QUALITY CONTROL DATA REPORT <br />ANA YTE 1,1-Dichloroethene Trichloroethene Chloro - <br />benzene <br />Method. <br />Analyst - <br />Concentration <br />Spiked <br />LCS Batch#: <br />Date Prepared: <br />Date Analyzed: <br />Instrument I.D.#: <br />LCS % <br />Recovery: <br />Control Limits* <br />.�.d. uvnn+naGv. rvw •vv ,nv.w <br />MS/MSD <br />Batch # <br />Date Prepared. <br />Date Analyzed <br />Instrument I D.#: <br />Matrix Spike <br />% Recovery <br />Matnx Spike <br />Duplicate % <br />Recovery <br />Relative % <br />Difference <br />EPA 8010 <br />EPA 8010 <br />EPA 8010 <br />T Costello <br />T Costello <br />T Costello <br />25 ug/kg <br />25 ug/kg <br />25 ug/kg <br />LCS032395 <br />LCS032395 <br />LCS032395 <br />3/23/95 <br />3/23/95 <br />3/23/95 <br />3/24/95 <br />3/24/95 <br />3/24/95 <br />GCHP-08 <br />GCHP-08 <br />GCHP-08 <br />76 <br />100 <br />92 <br />28-167 <br />35-146 <br />38-150 <br />• ry A. > N 4 r <br />> ,} a`S^ x,,.w ..,. ,.. .r 'r K< ,,. '" ?n r �':�^H't'v}`.q.:...f fe y.. <br />.v yr v} } <br />vwvx Iv^ vrvvrfxY.r vv. r,v v.v x <br />1 vwx..v. +. vxr..w 4Wre vr.nwrrv,v nvwr [vrv. Inv. ti+h h.tw.wun{v.r,.ywvvx \.iv vv v'}ti +++�vv++r+A 4)-+r v 'r <br />9503F16-03 <br />9503F16-03 <br />9503F16-03 <br />3/23/95 <br />3/23/95 <br />3/23/95 <br />3/24/95 <br />3/24/95 <br />3/24/95 <br />GCHP-08 <br />GCHP-08 <br />It <br />GCHP-08 <br />. <br />SEQUOIA ANALYTICAL <br />Linda C Schneider <br />Project Manager <br />Please Note <br />The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents, <br />preparation and analytical methods employed for the samples The LCS % recovery data is used tar <br />validation of sample batch results Due to matrix effects, the OC limits for MS/MSD s are advisory only <br />and are not used to acceptor re ect batch results 'Matrix interference <br />5031072 GRW <20> <br />