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Complaint Investigation Summary Report #. 5105 <br />COMPLAINT ID: COBEUM9DI Site Location: 6540 S AUSTIN RD <br />Activity Summary <br />Activity Date Recorded by <br />01/25/2022 Received final disposal record for waste generated. Waste was disposed of as BAKER <br />non-hazardous. <br />Reviewed and summarized sample results received 1/20/22: <br />Sample 1, dated 8-26-21, waste pile <br />TTLC (mg/kg) = Arsenic .644, Barium 159, Beryllium .585, Cadmium .129, <br />Chromium 37.7, Cobalt 16.2, Copper 25.7, Nickel 27.6, Lead 4.94, Vanadium <br />70.8, Zinc 52.5 <br />VOC-TPHG (mg/kg) = .0523 <br />Semi-VOC (mg/kg) = (S) o-Terphenyl 75.3 <br />All of these results for waste pile are below the hazardous waste regulatory level. <br />Sample 2, dated 8-26-21, waste pile <br />TTLC (mg/kg) = Barium 155, Beryllium .536, Cadmium .131, Chromium 31.8, <br />Cobalt 17.3, Copper 27, Nickel 28.1, Lead 5.13, Vanadium 66.3, Zinc 51.3 <br />VOC-TPHG (mg/kg) = .0564 <br />Semi-VOC (mg/kg) = (S) o-Terphenyl 71.7 <br />All of these results for waste pile are below the hazardous waste regulatory level. <br />Sample 3, dated 8-26-21, waste pile <br />TTLC (mg/kg) = Arsenic .745, Barium 210, Beryllium .585, Cadmium .129, <br />Chromium 37.7, Cobalt 16.2, Copper 25.7, Nickel 27.6, Lead 4.94, Vanadium <br />70.8, Zinc 52.5 <br />VOC-TPHG (mg/kg) = 303, Benzene .00222, n-Butylbenzene .0824, <br />sec-Butylbenzene .112, tert-Butylbenzene .061, ethylbenzene .254, <br />lsopropylbenzene 0.150, p-Isopropyltoluene 0.0768, 4-Methyl-2-pentanone (MIBK) <br />1.77, Naphthalene 0.193, n-Propylbenzene 0.267, Toluene 0.245, <br />1,1,2-Trichloroethane 0.209, 1,2,4-Trimethylbenzene 1.44, <br />1,2,3-Trimethylbenzene 0.356, 1,3,5-Trimethylbenzene 1.05, Xylenes, Total 3.63 <br />Semi-VOC (mg/kg) = Pyrene .111 <br />All of these results for waste pile are below the hazardous waste regulatory level. <br />Abated complaint as 01-Violations cited and corrected. Turned in file to Elena <br />Manzo (Lead Sr. RENS) for review. <br />5105.rpt <br /> <br />Page 3 of 3