Department of Environmental Quality

 

GDForum ID: 256

Description of Proposed Guidance Document Changes

This guidance memo serves as an addendum to Trading Nutrient Reductions from Nonpoint Source Best Management Practices in the Chesapeake Bay Watershed: Guidance for Agricultural Landowners and Your Potential Trading Partners. The purpose of this addendum is to provide updated nutrient and sediment credit values for conversion of agricultural and developed lands to less intensive uses for use in the nonpoint source nutrient trading program. Updated credit rates for are now provided for each HUC 8 within the Chesapeake Bay watershed rather than by tributary east and west of I-95. These new rates were obtained using the Chesapeake Assessment Scenario Tool (CAST). For areas outside of the Bay watershed, rates were calculated as an average of all Bay values for each pollutant and type of land conversion. In this update, pasture and hay were combined as a single land use type for assessing historical use. Additionally, a new table is provided to estimate sediment reductions associated with previously released phosphorus credits for which sediment credits were not released.

 

Guidance Document(s) for this Comment Forum

Document ID	Document Title	Document in Effect	Proposed Document
GM20-2001	Addendum to Trading Nutrient Reductions from Nonpoint Source Best Management Practices in the Chesapeake Bay Watershed: Guidance for Agricultural Landowners and Your Potential Trading Partners	n/a	Proposed Document	Updated on 3/11/2020

 

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