ESR 425 , ESR 524

WETLAND ECOLOGY AND REGULATIONS

Week 7 Lecture 2


Coordination of State Goals and Fill / Removal Law
Washington State Wetland Regulations
Ratings of Wetlands in Washington
Regulated Activities
Exempted Wetlands
Buffer Widths
Time Frame of Obtaining a Permit
Enforcement of 404 Permits
State Assumption of 404 Permit Process
Mitigation Strategies
Minimization of Wetland Impacts
Steps in Compensatory Mitigation
Site Selection Information
Flow Chart of Compensatory Mitigation
Whiteboard



COORDINATION OF STATEWIDE GOALS AND FILL/REMOVAL LAW

 

LOCAL WETLAND CONSERVATION PLAN

· Detailed Inventory

· Assess Wetland Functions/Values

· Designate - Protection/Conservation/Development

· Mitigation Analysis

· Policies & Implementing Measures

DSL APPROVAL

· Public Need for Proposed Use

· Practical Alternatives Not Available

· Mitigation Provided

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WASHINGTON STATE WETLAND REGULATIONS

Shoreline Management Act - establishes mandatory local government programs

Clark County

· Rate Wetlands

· Specify Activities Allowed Without Permit

· Buffer Width

· Mitigation Requirements

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RATING OF WETLANDS IN WASHINGTON

· Category 1 - Highest Quality

verified habitat for E&T species
Bog/Fen and Forested Wetlands - mature trees
>7.5 acres with > 3 wetland subclasses including open water
connected to another habitat area

· Category 2 - High Quality

E&T habitat
Forested Wetland outside urban area > 1 acre
Heron rookery
Spawning habitat for anadromous fish
>10 acres with >2 wetland classes including open water
>5 acres with > 3 wetland subclasses including open water
connected to another habitat area

· Category 3 - More common than 1 and 2

Headwater with >5 cfs
Streams utilized by salmonids (intermittent or perennial)
Perennial streams not used by salmonids
Forested wetland within urban area

· Category 4 - Small, isolated, less diverse vegetation

Altered by prior legal activities and if left alone would revert
Regulated man-made drainage facilities in natural wetland
Intermittent streams without salmonids

· Category 5 - Marginal wetlands

Isolated, with only 1 wetland class with >90% exotic species
Altered by prior legal activities and if left alone would not revert

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REGULATED ACTIVITIES

· Removal, excavation, grading, dredging, dumping , discharging or filling > 50 cubic yards or impacting > 1 acre or buffer

· Construction of a structure

· Construction of stormwater management facilities

· Destruction/alternation of wetland vegetation

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EXEMPTED WETLANDS

· Small:

Category 2 & 3 wetlands < 2,500 square feet

Category 4 wetland <10,000 square feet

· Artificial:

Wetland created in non-wetland areas

irrigation/drainage ditches

swales

canals

detention facilities

treatment facilities

farm ponds

· Not mitigation wetlands

· Prior Converted Cropland

· Category 5 wetlands

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BUFFER WIDTHS

· Category 1 Wetland - 300 feet

· Category 2 Wetland - 200 feet

· Category 3 Wetland - 100 feet

· Category 4 Wetland - 50 feet

 

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Time Frame to Obtain a Permit

Nationwide

Delineation
Report
Optional Agency Field Visit
30 to 60 days for Letter from Agency
Permit Valid for 2 Years

Individual

Delineation
Report
Optional Agency Field Visit
Non-controversial -- 60 to 90 days for Permit
Controversial -- 180 days to 1 year for Permit (may involve EIS)
Permit Valid for 3 Years

 

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Enforcement of 404 Permits

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State Assumption of 404 Permit Process

States can assume 404 program with EPA approval

States with Assumption of Program:
Michigan
New Jersey
States in Process of Assumption:
Oregon
Florida

 

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Mitigation Strategies

Avoidance

Minimization

Compensation
Restoration
Enhancement
Creation

 

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Minimization of Wetland Impacts

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Steps in Compensatory Mitigation

Define Objective

Regulatory Agencies
Evaluation of Impacts
Regional Need
Amenity of Development
Functional Need of Development
Choice of Applicant

Describe General Characteristics of Mitigation

Hdyrology
Vegetation

Site Selection

Feasibility
Costs
Constraints/Opportunities

 

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Site Selection Information

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Flow Chart of Compensatory Mitigation

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