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TOXICOLOGICAL PROFILE FOR CHROMIUM - Davidborowski.com

TOXICOLOGICAL PROFILE FOR CHROMIUM - Davidborowski.com

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<strong>CHROMIUM</strong> 3337. REGULATIONS AND ADVISORIESTable 7-1. Regulations and Guidelines Applicable to Chromium (continued)Agency Description Information ReferenceNATIONAL (cont.)Calcium chromate—designated CERCLAhazardous substance undersections 311(b)(4) of theClean Water Act and RCRAsection 300110 poundsDHHSCarcinogen classificationchromium and certainchromium(VI) <strong>com</strong>pounds(calcium chromate, chromiumtrioxide, lead chromate,strontium chromate, and zincchromate)Known humancarcinogensNTP 1989, 1991,1992, 1998STATERegulations andGuidelines:a. Air:IdahoKansasChromium(VI)Acceptable ambientconcentration for acarcinogenChromium, chromium(I), andchromium(III)Acceptable concentrationoccupational exposure levelConcentration limits forhazardous air emissions:chromium andchromium(III)chromium(VI)ID Dept Health8.3x10 -5 µg/m 3Welfare 1999b0.025 mg/m 30.5 mg/m 35 tons/year0.002 tons/yearKS Dept. HealthEnv 1998KentuckySignificant emission levelChromium metal,chromium(II), andchromium(III)Calcium chromate, leadchromate, lead chromateoxide, and zinc chromatechromium(VI)1.276x10 -4 pounds/hour1.276x10 -5 pounds/hour2.76x10 -6 pounds/hourKY Div Air Quality1998LouisianaAllowable emission ratechromium(VI)25 pounds/year LA Air Quality Div1998

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