Chollas Creek Water Quality Data - PowerPoint PPT Presentation
Title:
Chollas Creek Water Quality Data
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Title: Chollas Creek Water Quality Data Author: RB9 Last modified by: SYS#105 Created Date: 3/4/1999 6:43:16 PM Document presentation format: On-screen Show – PowerPoint PPT presentation
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Title: Chollas Creek Water Quality Data
1
Major Topics
- Good News
- TMDL Basics
- TMDL vs MS4 Permit
- Major Objections
- Staff Recommendation
2
Interested PartiesSupport the TMDL
3
TMDL is an Action Plan
- - Attain Water Quality Objectives
- - Restore Beneficial Uses
4
Components of a TMDL
- Problem Statement
- Numeric Target
- Source Analysis
- Load Capacity or TMDL
- Allocation
- Linkage Analysis
- Margin of Safety
- Seasonal Variation / Critical Conditions
5
TMDL vs MS4 Permit
MS4 Permit
TMDL
6
Major Objections
- 303(d) listed for toxicity (not diazinon)
- Requires immediate compliance with numeric limits
- TMDL is not needed because of USEPAs phase-out
7
Major Objections (cont.)
- TMDL is redundant with MS4 permit
- Monitoring Program is too expensive
- Source Analysis is too expensive
8
Adopt ResolutionNo. R9-2002-0123
