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!fn�Tr�S �C. <br /> E1949 <br /> w Reported: 06/21/2012 13:52 <br /> Promenade Circle,Suite 320 Project: Corral Hollow LF,SJ County-5 year <br /> Sacramento,CA 95834 Project Number. 139881 <br /> Project Manager: Sheila Richgels <br /> Water Analysis (Metals) <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <br /> QC Batch ID: BVE1703 Used client sample: N <br /> Dissolved Zinc DUP 1209237-01 ND ND ug/L 20 <br /> MS 1209237-01 ND 583.85 510.20 ug/L 114 75-125 <br /> MSD 1209237-01 ND 575.30 510.20 ug/L 1.5 113 20 75-125 <br /> QC Batch ID: BVE1810 Used client sample: N <br /> Dissolved Arsenic DUP 1209286-01 0.73000 0.75100 ug/L 2.8 20 J <br /> MS 1209286-01 0.73000 106.30 102.04 ug/L 103 70-130 <br /> MSD 1209286-01 0.73000 105.02 102.04 ug/L 1.2 102 20 70-130 <br /> Dissolved Lead DUP 1209286-01 ND ND ug/L 20 <br /> MS 1209286-01 ND 113.83 102.04 ug/L 112 70-130 <br /> MSD 1209286-01 ND 111.31 102.04 ug/L 2.2 109 20 70-130 <br /> Dissolved Manganese DUP 1209286-01 ND 0.20500 ug/L 20 J <br /> MS 1209286-01 ND 110.28 102.04 ug/L 108 70-130 <br /> MSD 1209286-01 ND 109.42 102.04 ug/L 0.8 107 20 70-130 <br /> AMIL <br /> Ived Nickel DUP 1209286-01 0.31200 ND ug/L 20 <br /> MS 1209286-01 0.31200 113.51 102.04 ug/L 111 70-130 <br /> MSD 1209286-01 0.31200 111.13 102.04 ug/L 2.1 109 20 70-130 <br /> Dissolved Selenium DUP 1209286-01 ND ND ug/L 20 <br /> MS 1209286-01 ND 130.43 102.04 ug/L 128 70-130 <br /> MSD 1209286-01 ND 127.16 102.04 ug/L 2.5 125 20 70-130 <br /> QC Batch ID: BVE1847 Used client sample: N <br /> Hexavalent Chromium DUP 1209282-01 0.23600 0.20700 ug/L 13.1 10 A02 <br /> MS 1209282-01 023600 21.243 20.202 ug/L 104 90-110 <br /> MSD 1209282-01 0.23600 21.196 20.202 ug/L 0.2 104 10 90-110 <br /> QC Batch ID: BVE1931 Used client sample: N <br /> Dissolved Mercury DUP 1209277-01 ND ND ug/L 20 <br /> MS 1209277-01 ND 0.95000 1.0000 ug/L 95.0 70-130 <br /> MSD 1209277-01 ND 0.95750 1.0000 ug/L 0.8 95.8 20 70-130 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party.BC Laboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 69 of 70 <br />