Choosing The Right Stp

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Information about Choosing The Right Stp

Published on March 17, 2008

Author: watershedprotection

Source: slideshare.net

Selecting the Most Effective Stormwater Treatment Practice Presented by the Center for Watershed Protection

Seven-Step Process to STP Screening Land Use Physical Feasibility Climate/ Regional Factors Watershed Factors Stormwater Management Capability Pollutant Removal Community and Environmental Factors

Land Use

Physical Feasibility

Climate/ Regional Factors

Watershed Factors

Stormwater Management Capability

Pollutant Removal

Community and Environmental Factors

Customizing Matrices to Local Needs Matrices are not necessarily exhaustive. Specific additional criteria may be incorporated or removed depending on local goals. Most of the material in the screening matrices provides technical guidance, and is not necessarily a regulatory mandate.

Matrices are not necessarily exhaustive.

Specific additional criteria may be incorporated or removed depending on local goals.

Most of the material in the screening matrices provides technical guidance, and is not necessarily a regulatory mandate.

Step 1. Land Use Rural —STPs for low density areas Residential —STPs for med. to high density residential Roads & Highways —STPs for major roads Commercial— STPs suitable for new commercial areas Hotspot Land Uses— STPs for high risk areas Ultra-Urban Sites— STPs for space-limited areas Step 1 Matrix

Rural —STPs for low density areas

Residential —STPs for med. to high density residential

Roads & Highways —STPs for major roads Commercial— STPs suitable for new commercial areas

Hotspot Land Uses— STPs for high risk areas

Ultra-Urban Sites— STPs for space-limited areas

Step 2. Physical Feasibility Soils Water Table Drainage Area Slope Head Step 2 Matrix

Soils

Water Table

Drainage Area

Slope

Head

Step 3. Climate and Regional Factors Arid/Semi-arid Low Relief Cold Climates Karst Topography High Rainfall Step 3 Matrix

Arid/Semi-arid

Low Relief

Cold Climates

Karst Topography

High Rainfall

Step 4. Watershed Factors Considerations for the following resource categories: Sensitive Streams Impacted Streams Non-Supporting Streams Restorable Streams Aquifers Urban Lakes Reservoirs Estuaries/ Shellfish Beds Step 4.2 Matrix Step 4.1 Matrix

Considerations for the following resource categories:

Sensitive Streams

Impacted Streams

Non-Supporting Streams

Restorable Streams

Aquifers

Urban Lakes

Reservoirs

Estuaries/ Shellfish Beds

Step 5. Stormwater Management Capability Water Quality Recharge Channel Protection Quantity Control Step 5 Matrix

Water Quality

Recharge

Channel Protection

Quantity Control

Step 6. Pollutant Removal Pollutant data assessed include: Total Suspended Solids Total Phosphorous Total Nitrogen Metals Bacteria Step 6 Matrix

Pollutant data assessed include:

Total Suspended Solids

Total Phosphorous

Total Nitrogen

Metals

Bacteria

Step 7. Community and Environmental Factors Maintenance Community Acceptance Affordability Safety Habitat Step 7 Matrix

Maintenance

Community Acceptance

Affordability

Safety

Habitat

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