Statutes, codes, and regulations
District Of Columbia Administrative Code
Title 20 - ENVIRONMENT
Chapter 20-62 - UNDERGROUND STORAGE TANKS - REPORTING OF RELEASES, INVESTIGATION, CONFIRMATION, ASSESSMENT, AND CORRECTIVE ACTION
Rule 20-6209 - TIERS 1 AND 2 STANDARDS

D.C. Mun. Regs. tit. 20, r. 20-6209

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Current through Register Vol. 71, No. 52, December 27, 2024
Rule 20-6209 - TIERS 1 AND 2 STANDARDS
6209.1

The Tier 1 and 2 standards for water, soil, soil vapor, and indoor air shall be the levels specified in the Department's RBCA technical guidance, which is available on the Department's website at https://doee.dc.gov/page/lust-forms- guidance-and-public-documents.

6209.2

Indoor air sampling shall be used in conjunction with sub-slab soil gas and ambient air sampling in a multiple lines of evidence approach to evaluating vapor instrusion risk.

D.C. Mun. Regs. tit. 20, r. 20-6209

Final Rulemaking published at 40 DCR 7835, 7895 (November 12, 1993); as amended by Final Rulemaking published at 46 DCR 7699 (October 1, 1999); amended by Final Rulemaking published at 67 DCR 1778 (2/21/2020)