Jump to main content or area navigation.

Contact Us



HRS Rule, Table 4-23, Page 51624

Sensitive environment Assigned value
Critical habitat a for Federal designated endangered or threatened species
Marine Sanctuary
National Park
Designated Federal Wilderness Area
Areas identified under Coastal Zone Management Act b
Sensitive areas identified under National Estuary Program c or Near Coastal Waters Program d
Critical areas identified under the Clean Lakes Program e
National Monument f
National Seashore Recreational Area
National Lakeshore Recreational Area
Habitat known to be used by Federal designated or proposed endangered or threatened species
National Preserve
National or State Wildlife Refuge
Unit of Coastal Barrier Resources System
Coastal Barrier (undeveloped)
Federal land designated for protection of natural ecosystems
Administratively Proposed Federal Wilderness Area
Spawning areas critical g for the maintenance of fish/shellfish species within river, lake, or coastal tidal waters
Migratory pathways and feeding areas critical for maintenance of anadromous fish species within river reaches or areas in lakes or coastal tidal waters in which the fish spend extended periods of time
Terrestrial areas utilized for breeding by large or dense aggregations of animals h
National river reach designated as Recreational
Habitat known to be used by State designated endangered or threatened species
Habitat known to be used by species under review as to its Federal endangered or threatened status
Coastal Barrier (partially developed)
Federal designated Scenic or Wild River
State land designated for wildlife or game management
State designated Scenic or Wild River
State designated Natural Areas
Particular areas, relatively small in size, important to maintenance of unique biotic communities
State designated areas for protection or maintenance of aquatic life i 5

  • a Critical habitat as defined in 50 CFR 424.02.

  • b Areas identified in State Coastal Zone Management plans as requiring protection because of ecological value.

  • c National Estuary Program study areas (subareas within estuaries identified in Comprehensive Conservation and Management Plans as requiring protection because they support critical life stages of key estuarine species (Section 320 of Clean Water Act, as amended).

  • d Near Costal Waters as defined in Sections 104(b)(3), 304(1), 319, and 320 of Clean Water Act, as amended.

  • e Clean Lakes Program critical areas (subareas within lakes, or in some cases entire small lakes) identified by State Clean Lake Plans as critical habitat (Section 314 of Clean Water Act, as amended).

  • f Use only for air migration pathway.

  • g Limit to areas described as being used for intense or concentrated spawning by a given species.

  • h For the air migration pathway, limit to terrestrial vertebrate species. For the surface water migration pathway, limit to terrestrial vertebrate species with aquatic or semiaquatic foraging habits.

  • i Areas designated under Secton 305(a) of Clean Water Act, as amended.


Superfund Help: Acronyms | Topics | Frequent Questions | Publications | Sitemap

OSWER Home | Superfund Home | Innovative Technologies Home