WP0043164 - Laserfiche WebLink

Home Browse Search

February 10, 2023 Lab No. : STK233O452 San Joaquin County EHD Customer No. : 3017919 Quality Control -Wet Chem =1 (SP 2300284-002) MSD mg/L 30.00 99.2% 74-126 MSRPD mg/L 10.00 0.8% <_20 MS mg/L 30.00 95.6% 74-126 (SP 2300284-005) MSD mg/L 30.00 99.5% 74-126 MSRPD mg/L 10.00 4.0% :520 Sulfate 300.0 01/12/2023:200349LDM Blank mg/L ND <0.5 LCS mg/L 50.00 95.4% 90-110 MS mg/L 100.0 14.6% 82-124 435 (SP 2300284-002) MSD mg/L 100.0 65.8% 82-124 435 MSRPD mg/L 10.00 27.0% :523 435 MS mg/L 100.0 82.7% 82-124 (SP 2300284-005) MSD mg/L 100.0 85.8% 82-124 MSRPD mg/L 10.00 1.7% :523 MBAS 5540C 01/12/2023:200452JBA MS mg/L 1.000 100% 90-110 (STK2330452-001) 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 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. Page 7 of 7 Page 7 of 7