WP0040737 - Laserfiche WebLink

Home Browse Search

February 10, 2023 Lab No. : STK2331367 San Joaquin County EHD Customer No. : 3017919 Quality Control -Wet Chem =1 (VI 2340463-001) MSD mg/L 30.00 92.7% 74-126 MSRPD mg/L 10.00 10% <_20 MS mg/L 30.00 93.9% 74-126 (SP 2301318-002) MSD mg/L 30.00 102% 74-126 MSRPD mg/L 10.00 8.2% :520 Sulfate 300.0 02/01/2023:201132LDM Blank mg/L ND <0.5 LCS mg/L 50.00 98.2% 90-110 MS mg/L 100.0 103% 82-124 (VI 2340463-001) MSD mg/L 100.0 93.1 % 82-124 MSRPD mg/L 10.00 9.4% :523 MS mg/L 100.0 94.8% 82-124 (SP 2301318-002) MSD mg/L 100.0 103% 82-124 MSRPD mg/L 10.00 8.1% :523 MBAS 5540C 02/02/2023:201293JBA MS mg/L 1.000 100% 90-110 (STK2331367-001) MSD mg/L 1.000 100% 90-110 MSRPD mg/L 1.000 0.0% :50.1 Definition Blank : Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. Dup : Duplicate Sample-A random sample with each batch is prepared and analyzed in duplicate.The relative percent difference is an indication of precision for the preparation and analysis. LCS : Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect-Result was below the DQO listed for the analyte. Explanation 440 Sample nonhomogeneity may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. Page 7 of 7 Page 7 of 7