Linking BMPs to Pollutant Sources
After impairments are understood, pollutant causes and sources known, pollutant loads estimated, critical areas identified…. it’s time to select the treatment measures – BMPs – that will achieve your goals.
Linking BMPs to Sources Match BMP to pollutant(s) Match BMP to source(s) Consider pollutant transport/delivery Evaluate load reduction capability Cost Acceptability/practicality
Match BMP to pollutant(s)
USDA-NRCS Conservation Practice Physical Effects (CPPE) adapted from:
Match BMP to source(s)
Consider pollutant transport/delivery BMP interventions in NPS pathways: Availability/pollutant prevention (e.g., NMP) Detachment (e.g., conservation tillage) Transport (e.g., WASCOB) Delivery (e.g., filter strip, riparian buffer)
Evaluate load reduction capability Stormwater/Urban (BMP Effectiveness database; Menu of BMPs) Agriculture (Ag Management Measure document) Forestry (Forestry Management Measures document) Mining (Development document for proposed Effluent Guideline for Mining)
Sample BMP effectiveness table
Cost Look at experience in other watershed programs in the region NRCS cost tables, other programs
Cost
Acceptability/practicality Look at what’s worked and what hasn’t Consider costs/benefits Property ownership/site access Look for added benefits Use a combination of techniques
Rank alternatives