Watershed-Based Planning. A Blueprint for Action!. Statutory and regulatory context. Clean Water Act Water quality standards KPDES discharge permits Stream & wetland “filling” Safe Drinking Water Act Source water protection Public health codes Residential wastewater Local Codes
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A Blueprint for Action!
POLLUTANT REMOVAL (%)
Covers WWTPs and other point sources
Direct and Indirect Discharges
Clean Water Act Part II:Water Quality Standards
Usually apply to all waters, regardless of use designation
Kentucky warmwater aquatic habitat numeric criteria
MINIMUM DATASET FOR FRESHWATER WATER QUALITY CRITERIA DERIVATION
DATA FROM THE MOST SENSITIVE
LIFE STAGES SHOULD BE USED
0.0 μg/L 25 μg/L 50 μg/L 100 μg/L 200 μg/L 500 μg/L
Control 1 2 3 4 5
96-hr LC50 = 100 μg/L
Good Mid-Range Poor
A TMDL is. . . .
TMDL = ΣWLAi + ΣLAi + MOS