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JUN-21-00 THU 11 : 54 AM DataVal, Inc, FAX N0, 415 4ty 6500 F. 1 <br /> FAX <br /> 7 page • <br /> 'TO: STEVE STANLEY, CURTIS& TOMPKINS LTD. <br /> FROM: DAVID DIXON,TREADWELL&ROLLO <br /> DATE: JUNE 21, 2000 <br /> SUBJECT: MISSING/INCORRECT ITEMS <br /> SDG#: LISTED BELOW <br /> PROJECT: STOCKTON REDEVELOPMENT <br /> 5QQ# MISSING/INCORRECT ITEMS <br /> 145154 1. There is a concern about the paint contamination associated with the TPH-Extractable analysis. <br /> Other water samples in this area have been reported as non-detect for diesel. <br /> Please address the following: <br /> In the chromatogram that shows the paint contamination, is the contamination limited to the two <br /> peaks eluting at 6-7 minutes, or does it include the slight baseline rise between 13 and 19 <br /> minutes? <br /> Was the contamination present during the extraction process, or was it airborne? Were the <br /> samples re-analyzed at a later time after the contamination subsided? <br /> 1 would like the lab to re-visit the data to determine how much of the reported values for diesel <br /> were attributed to the paint contamination. If paint contamination was not present at the lab <br /> during the time of the sample analysis,would the samples have been non-detect for diesel? <br /> Please re-print all the chromatograms to show the same scale as the chromatogram of the paint <br /> contamination provided in the data package. <br /> 145268 1. The sample results and method blank are missing from the data package. <br /> 2. The samples in this sample delivery group are not located on the run log provided. <br /> 145486 1. The data package is missing the case narrative. <br /> 2. Page 2 of 3 of the chain of custody is missing from the data package. This is page 3 of the <br /> data package. <br /> 3. 8015-EXT - The data package is missing the extraction log for water sample 145486-13. The <br /> batch ID is 55762. <br /> Please submit these corrections/missing items as soon as possible. Please call me today on <br /> my cell phone at 415.608.4005 to verify receipt of this memo. <br /> Please fax your reply to our office at 415,955.9041. Send originals to T&R's San Francisco <br /> office at 555 Montgomery Street, San Francisco, CA 94111. • <br /> StocktonRed.memo Page I <br />