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CASE NARRATIVE FOR <br /> TBME, BTEX & TFH GAS <br /> LABORATORY QAL CLIENT CH2M Hill/SFO <br /> Del Monte ,#33 <br /> CASE NO. N/A CONTRACT NO.: N/A <br /> LAB REF. NO. : 88368 SDG NO. : R8368 <br /> I. RECEIPT <br /> A. Date: July 21, 1994 <br /> B. Sample Information: <br /> LAB CLIENT SAMPLE DATE DATE DATE <br /> SAMPLE ID SAMPLE ID MATRIX SAMPLED EXTRACTED ANALYZED <br /> R8368001 MW--6 WATER 07/20/94 N/A 07/28/94 <br /> R8368002 MW-4 WATER 07/20/94 N/A 07/28/94 <br /> R8368003 MW--3 WATER 07/20/94 N/A 01/29/94 <br /> R8368004 MW-7S WATER 07/20/94 N/A 07/29/94 <br /> R8368005 MW-7D WATER 07/20/94 N/A 07/29/94 <br /> R8368006 MW-2 WATER 07/20/94 N/A 07/28/94 <br /> R8368007 MW-1 WATER 07/20/94 N/A 07/28/94 <br /> R8368008 TB WATER 07/20/94 N/A 07/29/94 <br /> R8368009 MW-9 WATER 07/20/94 N/A 07/28/94 <br /> R8368009DL MW-9DL WATER 07/20/94 N/A 07/29/94 <br /> GWB10728 GWBI0728 WATER N/A N/A 07/28/94 <br /> GWB10729 GWBI0729 WATER N/A N/A 07/29/94 <br /> Documentation j <br /> C. Exceptions No exceptions were encountered. <br /> II. EXTRACTION <br /> A. Holding Times: Medium level protocol was not performed; therefore, holding <br /> time is not applicable. <br /> Extraction <br /> B. Exceptions Not applicable. <br /> III. ANALYSIS <br /> A. Holding Times: Holding times were met. <br /> Analytical <br /> B. Exceptions Samples R8368006 (MW-2), R8368007 (MW-1) , and R8368009 (MW- <br /> 9) were analyzed on a diluted basis due to the concentration <br /> of target analytes. Due to the concentration of target <br /> analytes, sample 88368009 (MW-9) was re-analyzed on a <br /> further diluted basis in order to obtain a detector response <br /> within the linear calibration range of the instrument. The <br /> results of both analyses are included for your information. <br /> Reporting limits have been adjusted accordingly. <br /> kdh.015 <br /> Quality Analytical 5090 Caterpillar Road, 916 244-5227 <br /> Laboratories Inc. Redding,CA 960W-1412 Fax No.976 244-4109 <br /> 000003 <br />