Major TopicsMajor Topics

• Good NewsGood News

• TMDL BasicsTMDL Basics

• TMDL vs MS4 PermitTMDL vs MS4 Permit

• Major ObjectionsMajor Objections

• Staff RecommendationStaff Recommendation

Interested PartiesInterested PartiesSupport the TMDLSupport the TMDL

- Attain Water Quality Objectives

- Restore Beneficial Uses

TMDL is an “Action Plan”TMDL is an “Action Plan”

• Problem Statement

• Numeric Target

• Source Analysis

• Load Capacity or TMDL

• Allocation

• Linkage Analysis

• Margin of Safety

• Seasonal Variation / Critical Conditions

Components of a TMDLComponents of a TMDL

TMDL vs MS4 PermitTMDL vs MS4 Permit

TMDLTMDL

MS4 MS4 PermitPermit

Major ObjectionsMajor Objections

• 303(d) listed for toxicity (not 303(d) listed for toxicity (not diazinon)diazinon)

• Requires immediate compliance with Requires immediate compliance with numeric limitsnumeric limits

• TMDL is not needed because of TMDL is not needed because of USEPA’s phase-outUSEPA’s phase-out

Major Objections (cont.)Major Objections (cont.)

• TMDL is redundant with MS4 permitTMDL is redundant with MS4 permit

• Monitoring Program is too Monitoring Program is too expensiveexpensive

• Source Analysis is too expensiveSource Analysis is too expensive

Adopt Adopt ResolutionResolution

No. R9-2002-0123No. R9-2002-0123