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Enviro - Chem, Inc. <br /> 1214 E. Lexington Avenue, Pomona, CA 91766 Tel (909) 590-5905 Fax (909) 590-5907 <br /> LABORATORY REPORT <br /> CUSTOMER: Kleen Industrial Services <br /> 50 Oak Court, Suite 210 <br /> Danville, CA 94526 <br /> Tel (925) 831-9800 E-Mail: Fionn@kleenblast. com <br /> PROJECT: SFO-19-054 / The Herrick Corp. / Stockton Steel Dust <br /> MATRIX: SOLID DATE RECEIVED: 02/06/19 <br /> SAMPLING DATE: 02/05119 DATE ANALYZED: 02/09-11/19 <br /> REPORT TO:MR. FIONN O'NEILL DATE REPORTED: 02/11/19 <br /> ----------------------------------------------------------------------- <br /> SAMPLE I . D. : 001 <br /> LAB I. D. : 190206-32 <br /> ------------------- <br /> SOLUBLE THRESHOLD LIMIT CONCENTRATION (STLC) ANALYSIS <br /> UNIT: mg/L IN THE STLC LEACHATE <br /> ---------- -- ----------------------------------------------- - - - - ---- -------- <br /> ELEMENT SAMPLE TTLC STLC EPA METHOD <br /> ANALYZED RESULT PQL PF LIMIT LIMIT USED <br /> Chromium (Cr) 17 . 8 0 . 05 2, 500 560/5. 0@ 6010B <br /> Nickel (Ni) 12 . 0 0.25 2, 000 20 6010B <br /> -COMMENTS <br /> DF = Dilution Factor <br /> PQL = Practical Quantitation Limit <br /> Actual Detection Limit = PQL X DF <br /> TTLC = Total Threshold Limit Concentration <br /> STLC � Soluble Threshold Limit Concentration <br /> @ = Must meet the TCLP limit/chromium (5. 0 mg/L in TCLP leachate) <br /> ** - TCLP Chromium/TTLC-Chromium VI recommended (if marked) <br /> *** = The concentration exceeds the STLC Limit, and the sample is <br /> defined as hazardous waste as pV, CAL-TITLE 22 (if marked) <br /> Data Reviewed and Approved by: <br /> CAL-DHS ELAP CERTIFICATE No. : 1555 <br />