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GRANITE CONSTRUCTION 20923S7638 06/24/02 10:33am P. 021 <br /> 819 Striker Avenue,Suite 8 <br /> Sequoia <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> FAX(916)921-0100 <br /> Anay ytic wwwsequoialabs.com <br /> Kleinfelder-Stockton Project: Granite Bumpile <br /> 2825 East Myrtle Street <br /> Project Number: 20-1108-33 Reported: <br /> Stockton CA,95205 Project Manager: Doug Heard 08/15/01 17:24 <br /> Total Metals by DCPA 6000/7000 Series Methods-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Rgwrtirg Spike Source "/"REC RPD <br /> AhalytC <br /> Result Limit units level Result 0/.FMLimits RPD Limit Notes <br /> Batch 1080056-EPA 3050D <br /> Blank_(1_0$OOS6-BLKl) Prepared:08/06/01 Analyzed 08/08/01 <br /> Antimony - ND 2.5 mg/kg <br /> Arsenic <br /> NO 2.5 " <br /> Barium <br /> NO 2.5 " <br /> Beryllium <br /> NO 0.25 " <br /> Cadmium <br /> NO 0.25 <br /> Chromium <br /> NO 0.25 " <br /> Cobalt NO 1.0 " <br /> Copper ND 0.25 " <br /> Lead NO 2.5 <br /> Molybdenum <br /> NO 1.0 <br /> Nickel NO 1.0 " <br /> Selenium NO 2.5 " <br /> Silver NO 0.25 " <br /> Thallium <br /> NO 2.5 " <br /> Vanadium <br /> NO 1.0 " <br /> Zinc <br /> NO 0.25 " <br /> _LCS(1080056-BS1 Prepared:08/06/01 Analyzed:08/08/0I <br /> Arsenic --� _....._..... 48.0 2.5 mg/kg 50.0 96.0 80-120 <br /> Cadmium 48.8 0.25 50.0 97.6 80-120 <br /> Chromium 49.9 0.25 " 50.0 99.8 80-120 <br /> Nickel <br /> 53.0 1.0 " 50.0 106 80-120 <br /> Zinc 48.1 0.25 " 50.0 96.2 80-120 <br /> Matrix Spike 1080056-MSl) - _ _Source:S107384-10.. -,_Prepared:08/06/01 Analzed:08/08/01 <br /> Arsenic 50.2 10 mg/kg 50.0 - ND - 100 80-120 <br /> Cadmium 47.8 1.0 50.0 NO 95.6 80-120 <br /> Chromium 54.1 1.0 50.0 6.2 95.8 80-120 <br /> Nickel 58.5 4.0 50.0 8.1 101 80-120 <br /> Zinc 78.0 1.0 50.0 31 94.0 80-120 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety. <br /> Page 12 of 20 <br />