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CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive, Atwater, CA 95301 Phone: (209) 384-2930 <br /> Certificate No. 2480 Fax: (209) 384-1507 <br /> Technicon Engineering Client Project ID: 180321 Method: TPH-Diesel <br /> 4539 N. Brawley Ave. Suite 108 Lab Reference Number: 1910022 Instrument ID: HP-Diesel <br /> Fresno, CA 93722 Sample Description: Soil Extracted: 10-08-19 <br /> Attn: Steve Curra Analyzed: 10-08-19 <br /> Reported: 10-16-19 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE TPH-Diesel <br /> Spike Concentration: 5.00 <br /> Units: mg1kg <br /> Batch #: TPHDS-0089 <br /> Method Blank: NO <br /> Surrogate % Recovery: 103% <br /> LCS % Recovery: See LCSA / LCSB <br /> Surrogate % Recovery: <br /> Control Limits: 60-130 % <br /> LCSA / LCSB Batch #: TPHDS-0089 <br /> LCSA % Recovery: 103% <br /> Surrogate % Recovery: 104% <br /> LCSB % Recovery: 118% <br /> Surrogate % Recovery: 105% <br /> Relative % Difference: 13.7% <br /> Please Note: <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 methods 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 /> reject batch results. <br /> APPROVED BY: 64 119 <br /> Clan J. Cone / Lab rrec or or <br /> Cassandra J.A. Nen ey/ Chemist <br />