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+ y, 110 2nd Avenue South,##137,Pacheco,CA 94553-5560 McCANDBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 CCC http//www mccampbell„com E-mail main@mccampbell com Ground Zero Analysis,Inc Client Project ID #256, Gabbard Date Sampled 10/25-10/27199 1714 Main Street Date Received 10/29/99 Escalon,CA 95320 Client Contact John Lane Date Extracted 10/29-11/05/99 [Client P O Date Analyzed 10129-11/05/99 Total Recoverable Petroleum Hydrocarbons as Oil&Grease(with Silica Gel Clean-up)by Scanning IR Spectrometry* EPA method 418 1 or 9073,Standard Methods 5520 C&F Lab ID Client ID Matnx TRPW %Recovery Surrogate 24354 GAB SB4-20 S ND 92 24355 GAB SB4-31 S ND 94 24356 GAB 264 GW W ND 94 24359 GAB SB5-20 S ND 93 24360 GAB SB5-31 S ND 94 24361 GAB 265 6W W ND 93 • 24363 GAB SB6-15 S ND 90 24364 GAB SB6-20 S 4800 ---# 24365 GAB SB6-31 S ND 93 24366 GAB ZB6GW- W ND 94 24370 GAB SB7-20 S ND 91 24371 GAB SB7-31 S ND 96 24372 GAB SB7GW24 W ND 93 24375 GAB SB8-20 S ND 94 Reporting Limit unless otherwise W 10 mg/L stated,ND means not detected above the reporting limit S 10 mg/kg *water samples are reported in mg/L,wipe samples in mg/wipe and soils and sludges in mg/kg "surrogate diluted out of range or not applicable to this sample At the client's request or the laboratory's discretion,one or more positive samples may be run by direct injection chromatography with FID detection The following comments pertain to these GC results a) gasoline-range compounds (C&C12) are present, b) diesel range compounds (CIO-C23)are present, c) oil-range compounds (>C18) are present, d)other patterned solvent (9) e) isolated peaks, f) GC compounds are absent or insignificant relative to TRPH infemng that complex biologically derived molecules are the source of IR absorption,h)a lighter than water immiscible sheen is present,i)liquid sample that contains greater than—5 vol %sediment DHS Certification No 1644 AAEdward Hamilton,Lab Director