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041.-/20/90 18 46 <br />'&415 78^ 1512 TRACE ANALYSIS <br />, <br />a- <br />EM"Trace ,Analysis Laboratory, Inc. <br />LOG NO.: <br />8512 <br />DATE SAMPLED: <br />3/30/90 <br />DATE RECEIVED: <br />3/30/90 <br />DATE EXTRACTED: <br />4/4/90, 4/10/90 and <br />4/11/90 , <br />DATE ANALYZED: <br />4/10/90, 4/11/90, and 4/12/90 � <br />DATE REPORTED: <br />4/18/90 <br />I <br />PAGE: <br />Thirty Four <br />Sample Type; Sod„]® <br />3877 3878 <br />3879 <br />Method and <br />Concen- Detection Concen- <br />Detection',�Concen- <br />Detection <br />Constituent <br />units <br />tration _-Umit- tration <br />Limit tra i <br />JJm _ <br />EPA Method 7420: <br />Lead <br />ug/kg <br />< 4,000 4,000 < 4,000 <br />4,000 < 4,000 <br />41000 <br />EPA Method 7471: <br />Mercury <br />EPA Method 7520: <br />Nickel <br />EPA Method 77A1: <br />Selenium <br />EPA Method 1160: <br />Silver <br />EPA Method 7841: <br />Thallium <br />EPA Method 7950: <br />Zinc <br />ug/kg < 20 20 < 20 20 < 20 20 <br />7,500 4,000 <br />ug/kg < 50 <br />00 4,000 4,500 4,001 <br />50 < 50 50 1< 50 50 <br />ug/kg < 2,000 2,000 < 2,000 2,000._.. <.2.10.00..._ 2,000 <br />ug/kg 71 50 < 50 50 < 50 50 <br />ug/kg 32,000 700 26,000 700 290,000 700 <br />