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COLUMBIA ANALYTICAL SERVICES,INC 4 <br /> Client Applied Earth Sciences Inc <br /> pp Service Request No X2400480 <br /> Piolect Canteen Corp Date Received 5/14/04 <br /> SAInple Matra Water <br /> CASE NARRATIVE <br /> All analyses were performed consistent with the quality assurance program of Columbia Analytical Services, Inc <br /> (CAS) This report contains analytical results for sample(s) designated for Tier Il data deliverables When <br /> appropriate to the method, metliod blank results have been reported with each analytical test Surrogate recoveries <br /> leave been reported for all applicable organic analyses Additional quality control analyses reported herein include <br /> Laboratory Duplicate (DUP), Matrix/Duplicate Matrix Spike(MS/DMS),and Laboratory Control Sample(LCS) <br /> All EPA recommended holding times have been met for analyses in this sample delivery group <br /> • The following difficulties were experienced during analysis of flus batch <br /> Surrogate recovery Dibromofluoromethane, Method 826013, was above laboratory acceptance limits for samples <br /> t MW IIA (X2400480-006) and MW 13AMS (XWG0400568-6),but within method acceptance limits <br /> 1 MS/DMS (XWG04005134-1 and XWG0400584-2) RPD for o-Xylene, Method 8260B, exceeded the laboratory <br /> control limit Recovery met acceptance criteria <br /> fThe associated blank spike (XWG0400568-4) recovery of Methyl tent-Butyl Ether, tert-Butyl Alcohol, and tert- <br /> Butyl Ethyl Ether, Method 826013, was above laboratory acceptance limits These compounds were not detected in <br /> the samples analyzed in this batch LCSIDLCS (XWG0400568-3 and XWG0400568-4) RPD for tert-Butyl <br /> Alcohol and tert-Butyl Ethyl Ether Method 826013, exceeded the laboratory control limit Recovery met <br /> acceptance criteria <br /> Appioved by �/�✓J Date <br />