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SIERRA LABORATORIES INC <br /> I <br /> i <br /> 3 <br /> ' Park Environmental.Corporation Sierra Client No. 10000-92 Date Sampled 090142 <br /> 2140 Professlonai Drive,Suite 130 Sierra Project Na. SP-310-92 Date Received: I0/n1/92 <br /> Roseville,California 95661 Client Project No. 1125-31 Date Prepared: 101411-10106 <br /> CllentProject. Date•Anatyaed• I0101-10106 <br /> v1A <br /> ' Report(late. .10109192 <br /> ' Laboratory Control Sample Report <br /> ' <br /> Compo" Analysig Type Pgr-cent RISovery <br /> a Range <br /> ' Total Lead EPA Method 7421 103 (50-150) <br /> Quality Control Reference Number #$5460 <br /> Parameter Analysts Tvoe v <br /> ery <br /> ©s Range <br /> ' <br /> TPH as Gasoline 8015-Modified{CADHS-LU1~T) 98 (50-150) <br /> TPH as Diesel 8015-Modified(CADHS-LUFT) 90 (50-150) <br /> ' Quality Control Reference`umber G002 100192(I)g2a0011-054 <br /> ' <br /> COME)ound Analyst Type Per-cent Recovery <br /> Ranee <br /> Benzene EPA 8020(BTEX) 87 (28-167) <br /> Toluene EPA 8029(BTEX) 99 (41-138) <br /> Ethyibenzene EPA 8020(BTEX) lot (38-150) <br /> Xylenes(Total) EPA 8020(BTEX) 102 (35-146) <br /> ' Quality Control Reference Number G002-100192(1)g220011-054 <br /> 1 <br /> 1 <br />