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Enviro - Chem, Inc. <br />1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907 <br />METHOD BLANK REPORT <br />CUSTOMER: AdvancedGeo, Inc. <br />837 Shaw Road, Stockton, CA 95215 <br />Tel: (209)467-1006 E-Mail: TCuellar@AdvancedGeo.Biz <br />PROJECT: Stockton Soccer Complex <br />LOCATION: 10055 CA-99 Stockton, CA <br />MATRIX: SOIL <br />DATE SAMPLED:10/24/22 <br />REPORT TO:MR. TIM CUELLAR <br />DATE RECEIVED: 10/25/22 <br />DATE ANALYZED: 10/26/22 <br />DATE REPORTED: 10/26/22 <br /> <br />METHOD BLANK FOR LAB I.D. 221025-6, 221025-7/-8 (COMPOSITE) <br />TOTAL THRESHOLD LIMIT CONCENTRATION ANALYSIS <br />UNIT: mg/Kg = MILLIGRAM PER KILOGRAM = PPM <br />--------- <br />ELEMENT SAMPLE PQL TTLC STLC EPA <br />ANALYZED RESULT DE LIMIT LIMIT METHOD <br />Antimony(Sb) ND 1.0 1 500 15 ' 60108. <br />Arsenic(As) ND 0.5 1 500 5.0 6010B <br />Barium(Ba) ND 5.0 1 10,000 100 6010B <br />Beryllium(Be) ND 0.5 1 75 0.75 6010B <br />Cadmium(Cd) ND 0.5 1 100 1.0 6010B <br />Chromium Total (Cr) ND 0.5 1 2,500 560/5@ 6010B <br />Chromium VI (Cr6) -- 1.0 - 500 5.0 7196A.. <br />Cobalt(Co) ND 1.0 1 8,000 80 60105 <br />Copper (Cu) ND 1.0 1 2,500 25 6010B <br />Lead(Pb) ND 0.5 1 1,000 5.0 6010B <br />Mercury(Hg) ND 0.01 1 20 0.2 7471A <br />Molybdenum(Mo) ND 5.0 1 3,500 350 6010B <br />Nickel(Ni) ND 2.5 1 2,000 20 6010B <br />Selenium(Se) ND 1.0 1 100 1:0 6010a <br />Silver(Ag) ND 1.0 1 500 5.0 6010B <br />Thallium(T1) ND 1.0 1 700 7.0 60103 <br />Vanadium(V) ND 5.0 1 2,400 24 60103 <br />Zinc(Zn) ND 0.5 1 5,000 250 6010B <br />COMMENTS <br />DF = Dilution Factor <br />PQL = Practical Quantitation Limit <br />Actual Detection Limit = PQL X DF <br />ND = Below the Actual Detection Limit or non-detected <br />TTLC = Total Threshold Limit Concentration <br />STLC = Soluble Threshold Limit Concentration <br />@ = Must meet both the STLC Limit at 560 and EPA-TCL2 Limit at 5 <br />* = STLC analysis for the metal is recommended (if marked) <br />** = Additional Analysis needed, please call to discuss (if marked) <br />*** = The concentration exceeds the TTLC Limit, and the sample is <br />defined as hazardous waste as per CCR-TITLE 22 (if marked) <br />= Not analyzed/not requested <br />DATA REVIEWED AND APPROVED BY: <br />CAL-DHS ELAP CERTIFICATE No.: 155