Surface water management project update
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Surface Water Management Project Update. Surface Water Management Program and Development Code Amendments CPW Team: KC McFerson, Alex Page, Ben Protzman , Michael Varien , Casey Weisinger. Agenda. Project Background and Scope Program Goals, Strategies, and Actions

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Surface water management project update

Surface Water Management Project Update

Surface Water Management Program and Development Code Amendments

CPW Team: KC McFerson, Alex Page, Ben Protzman, Michael Varien, Casey Weisinger


Agenda

Agenda

  • Project Background and Scope

  • Program Goals, Strategies, and Actions

  • Development Code Recommendations

  • Roles and Responsibilities

  • Q&A


Where d o w e fit i n

Where Do We Fit In ?


Project scope goals

Project Scope & Goals

  • Protect water quality through Low Impact Development standards

  • Provide an education and outreach program around water quality and best management practices

  • Develop a sustainable Surface Water Management Program

  • Meet TMDL obligations


Method of approach

Method of Approach


Agenda1

Agenda

  • Project Background and Scope

  • Program Goals, Strategies, and Actions

  • Development Code Recommendations

  • Roles and Responsibilities

  • Q&A


Goals strategies actions

Goals, Strategies, Actions

  • Strategies

  • Measurable,action-oriented, and time-focused

  • Goals

  • General statements, express the broad focus

  • Actions

  • Specific steps to reach objectives


Surface water management project update

Riparian Protection

A riparian area is the area bordering a water body that is a transition zone between aquatic and terrestrial ecosystems.

A riparian corridor includes the water body, wetlands, and adjacent land, i.e. the stream bank.

Protecting this zone is critical for improving water quality and wildlife habitat.


Surface water management project update

Benefits Riparian Areas

A riparian area is the area bordering a water body that is a transition zone between aquatic and terrestrial ecosystems.

A riparian corridor includes the water body, wetlands, and adjacent land, i.e. the stream bank.

Protecting this zone is critical for improving water quality and wildlife habitat.

Stream shade from trees and other plants at the top of slope provide fish habitat and reduce algae growth

Riparian woodland plants provide needed shade, shelter, and food for wildlife

Tree and shrub roots help filter out pollutants from water runoff on banks and prevent soil erosion

River

Riparian Area


Goals

Goals

  • Lead Community Effort to Improve and Maintain Water Quality and Water Resource Protection.

  • Increase Community Engagement and Awareness of Water Quality Issues.

  • Restore, Maintain, and Enhance Riparian Corridor Vegetation to Ensure a Healthy River for Humans and Wildlife.


Goal 1

Goal 1


Goal 2

Goal 2


Goal 3

Goal 3


Questions

Questions?


Agenda2

Agenda

  • Project Scope and Guidelines

  • Program Goals, Strategies, and Actions

  • Development Code Recommendations

  • Roles and Responsibilities

  • Q&A


Surface water management project update

What is LID?

Low impact development is landscape design to manage storm water by mimicking the natural hydrology of a site.

  • Intent is to…

    • Capture and store

    • Filter pollution

    • Balance water flow

Source: Oregon Department of Environmental Quality


Targeted lid categories

Targeted LID Categories

Low Impact Landscaping

Filtration

Conservation Design

  • Filter/buffer strip

  • Swales

  • Rain gardens

  • Compost bins/mulching

  • Clustered development

  • Minimize impervious surfaces


Targeted lid categories1

Targeted LID Categories

Runoff Storage

Runoff Conveyance

Infiltration

  • Curb-contained bioretention

  • Level spreader

  • Rain barrels

  • Retention ponds

  • Permeable pavements


Development code recommendations

Development Code Recommendations

The 6 LID Categories

Section 17.16.100 Purpose

The Single-Family Residential District is intended to promote the livability, stability and improvement of the City’s neighborhoods. This chapter provides standards for the orderly expansion and improvement of neighborhoods based on the following principles:

Make efficient use of land and public services, and implement the Comprehensive Plan, by providing minimum and maximum density standards for housing.

Accommodate a range of housing needs, including owner-occupied and rental housing.

Provide for compatible building and site design at an appropriate neighborhood scale.

Reduce reliance on the automobile for neighborhood travel and provide options for walking, and bicycling.

Provide direct and convenient access to schools, parks and neighborhood services.

Encourage and allow development with minimal impact on the natural environment to ensure viable neighborhoods for years to come.

  • Conservation Design

  • Infiltration

  • Filtration

  • Runoff Storage

  • Runoff Conveyance

  • Low Impact Landscaping


Development code recommendations1

Development Code Recommendations

The 6 LID Categories

Section 17.60.100 Parking - - Design Requirements

A. Surfacing: Except for single-family dwellings, all surfacing shall be a minimum of two inches thick and may be ofClass “b” asphaltic concrete surface or permeable pavement.

  • Conservation Design

  • Infiltration

  • Filtration

  • Runoff Storage

  • Runoff Conveyance

  • Low Impact Landscaping


Development code recommendations2

Development Code Recommendations

The 6 LID Categories

Section 17.24.200 – Special Standards for Certain Uses

“Zero-lot line” (single family courtyard home).

1. Setbacks Adjacent to Non-Zero Lot Line Development. When a zero-lot line house shares a side property line with a non-zero lot line development, the zero-lot line building shall be setback from the common property line by a minimum of 5 feet, except where the adjacent landowners use a shared driveway;

  • Conservation Design

  • Infiltration

  • Filtration

  • Runoff Storage

  • Runoff Conveyance

  • Low Impact Landscaping


Development code recommendations3

Development Code Recommendations

The 6 LID Categories

Section 16.12.020 Streets

T. Cul-de-sac. A cul-de-sac shall be as short

as possible and shall in no event he more than four

hundred feet long nor serve more than twelve

single-family dwellings.

All cul-de-sacs shall terminate with either a circular

or hammerhead turnaround.

Section 16.12.020 Streets

Radius for turnaround at end of

Cul-de-sac 5045 feet 42 35 feet

  • Conservation Design

  • Infiltration

  • Filtration

  • Runoff Storage

  • Runoff Conveyance

  • Low Impact Landscaping


Development code recommendations4

Development Code Recommendations

The 6 LID Categories

Section 17.16.200 – Special Standards for Certain Uses

***

C. Manufactured Home Park.

***

4. Perimeter Landscaping. When manufactured homes are oriented with their back or side yards facing a public right-of-way, the City may require installation of fencing and planting of a 15-foot wide landscape buffer between the right-of-way and a manufactured home park for the privacy and security of residents or aesthetics of the streetscape. If a landscape buffer is necessary, the 15-foot wide landscape buffer may be a swale or rain garden and shall include native vegetation.

  • Conservation Design

  • Infiltration

  • Filtration

  • Runoff Storage

  • Runoff Conveyance

  • Low Impact Landscaping


Development code recommendations5

Development Code Recommendations

The 6 LID Categories

Section 17.40.120 Development Setbacks

***

Other Yard Requirements.

1. Buffering. A 20-foot minimum buffer zone shall be required between development and any adjacent Residential District. The buffer zone shall provide landscaping to screen parking, service and delivery areas, and walls without windows or entries, as applicable. The buffer shall include native vegetation and may include swales, rain gardens, and curb-contained bioretention. The buffer may contain pedestrian seating but shall not contain any trash receptacles or storage of equipment, materials, vehicles, etc. The landscaping standards in Chapter 17.48 may require buffering other situations, as well.

  • Conservation Design

  • Infiltration

  • Filtration

  • Runoff Storage

  • Runoff Conveyance

  • Low Impact Landscaping


Development code recommendations6

Development Code Recommendations

The 6 LID Categories

17.24.200 – Special Standards for Certain Uses

D. Single-family Attached (townhomes), and Duplexes.

4.Common Areas. “Common areas” (e.g., landscaping in private tracts, shared driveways, private alleys, and similar uses) shall be maintained by a homeowners association or other legal entity. Such landscaping will preferably include native vegetation and may include retention ponds, swales, rain gardens, and curb-contained bioretention. A homeowners association may also be responsible for exterior building maintenance. A copy of any applicable covenants, restrictions and conditions shall be recorded and provided to the city prior to building permit approval.

  • Conservation Design

  • Infiltration

  • Filtration

  • Runoff Storage

  • Runoff Conveyance

  • Low Impact Landscaping


Development code recommendations7

Development Code Recommendations

The 6 LID Categories

Section 17.16.110 Permitted Land Uses

Table 17.16.110A.

Land Uses and Building Types Permitted in the Residential District

4. Accessory Uses and Structures (includes accessory dwellings)

a.Stormwater facilities (e.g. permeable pavements, rain gardens, rain barrels, vegetated swales, composting, and filter strips)

  • Conservation Design

  • Infiltration

  • Filtration

  • Runoff Storage

  • Runoff Conveyance

  • Low Impact Landscaping


Development code recommendations8

Development Code Recommendations

The 6 LID Categories

Section 17.16.120 – Building setbacks

***

D. Setback Exceptions

The following architectural features are allowed to encroach into the setback yards: Eaves, chimneys, bay windows, overhangs,and similar architectural features may encroach into setbacks by no more than 3 feet. Decks and similar roofless structures not more than 36 inches high may encroach into setbacks by no more than 6 feet, subject to the front yard setback provision in “A”. Other features, whether semi-permanent or permanent, that may be allowed to encroach into the setback yards include rain barrels and compost bins. Walls and fences may be placed on property lines, subject to the standards in Chapter 17.56 – Site Plan, Landscaping and Construction Plan Approval. Wall and fences within front yards shall additionally comply with the vision clearance standards in Section 17.56.020.

  • Conservation Design

  • Infiltration

  • Filtration

  • Runoff Storage

  • Runoff Conveyance

  • Low Impact Landscaping


Questions1

Questions?


Agenda3

Agenda

  • Project Scope and Guidelines

  • Program Goals, Strategies, and Actions

  • Development Code Recommendations

  • Roles and Responsibilities

  • Q&A


Roles responsibilities

Roles & Responsibilities


Surface water management project update

Implementation

Activities

Deliver SWMP

Deliver LID amendments

City Council will adopt SWMP/LID Amendments

DEQ will sign off

SWMP program administrator will oversee program

Provide DEQ with updates


Questions2

Questions?


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