1. (a) This subchapter sets forth generic Statewide health standards as one of three remediation standards that a person may select. The Statewide health standards are concentrations of regulated substances associated with a specific environmental medium, and are designated as the MSCs. The values used to determine the MSCs are contained in Appendix A, Tables 1—4 and 6 and are the concentrations of regulated substances that shall be met to demonstrate attainment of a Statewide health standard. Appendix A, Table 5 presents the toxicological and physical parameters used to calculate the MSCs in Appendix A, Tables 1—4.

2. (b) This subchapter sets forth generic Statewide health standards for regulated substances determined by the EPA to be mutagens. Appendix A, Tables 1—4 contain Statewide health standards based upon the methodology for mutagens in § § 250.306 and 250.307 (relating to ingestion numeric values; and inhalation numeric values) for the following substances classified as mutagens:

   Regulated Substance	CAS Number
   Acrylamide	79-06-1
   Benzo[a]anthracene	56-55-3
   Benzidine	92-87-5
   Benzo[a]pyrene	50-32-8
   Benzo[b]fluoranthene	205-99-2
   Benzo[k]fluoranthene	207-08-9
   Chromium (VI)	18540-29-9
   Chrysene	218-01-9
   Dibenzo[a,h]anthracene	53-70-3
   Dibromo-3-chloropropane, 1,2-	96-12-8
   Dichloromethane	75-09-2
   Indeno[1,2,3-cd]pyrene	193-39-5
   Methylene bis(2-chloroaniline), 4,4'-	101-14-4
   Nitrosodiethylamine, N-	55-18-5
   Nitrosodimethylamine, N-	62-75-9
   Nitroso-N-ethylurea, N-	759-73-9
   Trichloroethylene (TCE)	79-01-6
   Trichloropropane, 1,2,3-	96-18-4
   Vinyl chloride	75-01-4

3. (c) This subchapter sets forth minimum threshold MSCs for soil and groundwater that shall be met to demonstrate attainment of the Statewide health standards for regulated substances in Appendix A, Table 6. Minimum threshold MSCs are standards developed for regulated substances for which no chemical-specific toxicological data exist.
4. (d) For regulated substances which do not have an MSC for the relevant medium on Appendix A, Tables 1—4 or 6, the background standard or site-specific standard shall be met to qualify for a release of liability under the act.

Authority

The provisions of this § 250.301 amended under sections 104(a) and 303(a) of the Land Recycling and Environmental Remediation Standards Act (35 P.S. § § 6026.104(a) and 6026.303(a)); and section 1920-A of The Administrative Code of 1929 (71 P.S. § 510-20).

Source

The provisions of this § 250.301 amended January 7, 2011, effective January 8, 2011, 41 Pa.B. 230; amended August 26, 2016, effective August 27, 2016, 46 Pa.B. 5655. Immediately preceding text appears at serial pages (356269) to (356270).

Cross References

This section cited in 25 Pa. Code § 250.306 (relating to ingestion numeric values); and 25 Pa. Code § 250.307 (relating to inhalation numeric values).