Crediting methods summary Revision as of 20:11, 22 September 2020 by Mtrojan (talk | contribs)(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff) Crediting methods summary

Crediting methods summary
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Location	Crediting method	Pollutants
Chesapeake Bay Watershed (entities subject to Bay TMDL requirements)	Reduction efficiency % reduction from existing load Qualifying lane miles -lb/acre reduction Mass load reduction	TN, TP, TSS
Florida	Mass load reduction	TN, TP
EPA Region 1 (New Hampshire and Massachusetts MS4 permittees)	Mass load reduction with efficiency factors	TN (NH only), TP
Massachusetts – stormwater requirements (not linked to MS4 permit)	Reduction efficiency - %	TSS
Wisconsin	Reduction efficiency progress towards % reduction target Reduction efficiency - %	TSS, with conversion to TP TP
Washington Ecology – MS4 permittees with TMDL	Mass load reduction, effective developed acres reduction	TP, sediment
County and City of San Diego and MS4 Co-permittees	Performance-based compliance	Cu, Zn, Pb, TKN, TP
Orange County and MS4 Co-permittees	Reduction efficiency - %	Bacteria, sediment
City of Santa Cruz, California	Modeled load reduction	Sediment
Vermont (Under development)	Interim – modeled load reduction Permanent – under development	TP
North Carolina (Under development)	Mass load reduction	TN, TP