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IJBASELINEENVIRONMENTAL CONSULTING <br /> Memorandum <br /> 8 October 2020 <br /> Page 3 <br /> Table 1. Summary of toxic substance regulatory threshold for Toxicity Characteristic. <br /> Toxic Test method Regulatory Source <br /> substance Threshold <br /> Toxicity Characteristic 0.2 mg/L Article 3 of Chapter 11 of 22 CCR, <br /> Leaching Procedure <br /> (TCLP) (200 ug/L) section 66261.24 (a)(1) <br /> Waste Extraction Test <br /> (WET), Soluble Threshold 0.2 mg/L Article 3 of Chapter 11 of 22 CCR, <br /> Mercury Limit Concentration (200 ug/L) section 66261.24 (a)(2)(A) <br /> (STLC) <br /> Waste Extraction Test 20 mg/kg <br /> (WET), Total Threshold (20 000 Article 3 of Chapter 11 of 22 CCR, <br /> Limit Concentration (20,0 section 66261.24 (a)(2)(A) <br /> (TTLC) wet-weight <br /> Pursuant to section 25122.7 of the HSC, if a liquid hazardous waste contains mercury at a <br /> concentration equal to or greater than 20 mg/L, it will be classified as restricted hazardous <br /> waste. The mercury-contaminated water contains mercury at 3.0 ug/L, and is not classified as <br /> hazardous waste as discussed above.Therefore, the mercury-contaminated water is not <br /> classified as restricted hazardous waste. <br /> Summary <br /> The mercury-contaminated water collected in the trench drain after UV lamp breaks and <br /> temporarily stored on-site in a Baker tank at the Tesla Treatment Facility should be classified as <br /> non-hazardous waste. <br /> 04 Memo-Baseline-10/8/20 <br />