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' CALIFORNIA LABORATORY SERVICES <br /> 09/21/05 11:29 <br /> [11 <br /> llace-Kuhl Associates-Stockton Project: Mountain House Stormwater gg�� U� <br /> West Hammer Ln., Suite F Project Number: 6504-05 CL Work Order H:C0I0464 <br /> ckton CA, 95219 Project Manager: Fred Gins <br /> COC#:58584 <br /> Conventional Chemistry Parameters by APHA/EPA Methods - Quality Control <br /> Analyte <br /> Reporting Spike Source %REC RPD <br /> Result Limit Units Level Result %AEC Limits RPD Limit Notes <br /> 1 Batch C007053-601OA/No Digestion <br /> Matrix Spike(C007053-MSI) <br /> Calcium Source:C010430-01 Prepared:09/16/0.5 Analyzed:09/19/05 <br /> _. ._._. --- - -._ _ ..- ..__.... .. <br /> 44.0 1.0 mg/L 10.0 34 100 75-125 - <br /> Magnesium 59.8 1.0 10.0 50 98.0 75-125 <br /> Potassium 13.9 1.0 10.0 3.2 107 <br /> Sodium 75-125 <br /> 75.4 1.0 10.0 67 84.0 75-125 <br /> Matrix Spike Dup(CO07053-MSDI) Source:C010430-01 Prepared:09/16/05 Analyzed:09/20/05 <br /> Calcium - _ <br /> 43.6 1.0 mg/L 10.0 34 96.0 75-125 0.913 25 <br /> ' Magnesium 59.6 1.0 10.0 50 96.0 75-125 0.335 25 <br /> Potassium 13.4 1.0 10.0 3.2 102 75-125 3.66 25 -- <br /> Sodium 75.3 1.0 10.0 67 83.0 75-125 0.133 25 <br /> ' Batch C007064-General Preparation <br /> Blank(CO07064-BLKI) _ Prepared&Analyzed:09/16/05 <br /> ve Substances <br /> Methylene Blue Acti - - --- __ - - - - ---- <br /> ND 0.10 mg/L - <br /> ' LCS(CO07064-BSI) _ Prepared&Analyzed:09/16/05_ <br /> Methylene Blue Active Substances 0.483 0.10 mg/L 0.500 96.6 80-120 <br /> LCS Dup.(CO07064-BSDI) Prepared&Analyzed:09/16/05 <br /> Methylene Blue Active Substances 0_g87 - - - - -------- - <br /> 0.10 mg/L 0.500 97.4 80-120 0.825 20 <br /> Matrix Spike(CO07064-MSI) Source: C010474-02 Prepared&_Analyzed:09/16/05 <br /> Methylene Blue Active Substances - - - - - <br /> 0.600 0.10 mg/L 0.500 0.12 96.0 75-125 <br /> ' Matrix Spike Dup(C007064-MSDI) Source:C010474-02 Prepared&Analyzed:09/16/05 <br /> Methylene Blue Aclive Substances _- - <br /> 0.583 0.11 0 mg/L. 0.500 0.12 92.6 75-125 2.87 25 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> f249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br />