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Heart of Arlington Neighborhood Association Johnson Creek Update. November 15, 2011. Agenda. Introduction – Pete Jamieson, Director, COA Parks & Recreation Department Discussion of Johnson Creek Federal Project – Amy Archambeau, USACE

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Presentation Transcript
agenda
Agenda
  • Introduction– Pete Jamieson, Director, COA Parks & Recreation Department
  • Discussion of Johnson Creek Federal Project – Amy Archambeau, USACE
  • Environmental / Engineering Challenges & Opportunities – James Thomas, HDR
  • Water Quality & Litter Management Efforts – Bill Brown, COA – Storm Water Executive Manager
birth of a us army corps of engineers civil works project

Birth of a US Army Corps of Engineers Civil Works Project

Problem Perception

Request for Federal Action

Study of Problem & Report Preparation

Report Review and Approval

Project Authorization

Project Implementation

it takes two to tango

“It Takes Two to Tango”

Local Agency must request a project, be willing to partner with USACE

Local Agency and USACE share costs to:

Conduct study to develop a project

Design project

Build project

When project complete, local agency assumes operation and maintenance responsibilities

johnson creek recent history 1990 1999
Johnson Creek: Recent History (1990 – 1999)
  • 1990. USACE proposed construction of concrete-lined channels along substantial stretches of Johnson Creek.
  • 1995. The City of Arlington (COA) rejected USACE’s 1990 proposal.
    • Potential negative impact on recreation and economic development
    • Loss of wildlife habitat
  • 1997. COA adopted a more holistic alternative, the Johnson Creek Corridor Plan, to the 1990 USACE proposal.
    • Widely supported by community
    • Funding to implement plan not available
  • 1997 – early 1999. The COA began acquiring flood-prone properties and removing structures near Creek.
johnson creek recent history 1999 2001
Johnson Creek: Recent History (1999-2001)
  • 1999. USACE study completed,
    • Project footprint established
    • COA-USACE signed agreement for design, plans, and specs to remove flood-prone structures, restore ecosystem
    • 142 structures were identified for removal.
  • 2000. Removal of remaining structures (not previously removed by the COA) begun.
  • 2001. Removal of the structures identified in the 1999 Federal projectwas largely complete. All but three of the flood-prone structures had been removed by yearend.
  • 2001. Design of ecosystem restoration component begun.
johnson creek recent history 2004 2007
Johnson Creek: Recent History (2004 – 2007)
  • 2004 – 2006. Dallas Cowboys announced move to Arlington
    • Proposal for new stadium approved by citizens
    • Master plan for stadium area and Vision of Conservation Plan published
    • COA suspended further work on 1999 Federal Project
      • Flood prone structures had been acquired, all but 3 demolished
      • Majority of lands for ecosystem restoration had been acquired
  • November 2007. Legislation passed to modify the 1999 Federal project to reflect concepts of Vision of Conservation Plan.
johnson creek recent history 2008
Johnson Creek: Recent History (2008)
  • 2008. Work by COA and USACE to develop plan compatible with 1999 original authorization and new legislation. Plan Objectives are:
    • Maintain Flood Risk Management benefits gained by 1999 project (buy-outs)
    • Look for ways to stabilize streambanks and reduce sedimentation
    • Improve water quality
    • Restore aquatic and riparian ecosystems in and around Creek
    • Enhance recreational opportunities
  • Document the plan in a Integrated Feasibility Study/ Environmental Impact Statement (EIS)
johnson creek recent history 2008 2009
Johnson Creek: Recent History (2008 – 2009)
  • 2008 - 2009. Document Existing and Future Without Project conditions
    • Comprehensive inventory of conditions in and around the creek:
      • Hydrologic – Amount of water in Creek
      • Hydraulic – What water is doing
      • Geomorphic – How channel may migrate
      • Biologic – Animal and plant life, both desirable and undesirable
    • Identify problem areas – where erosion and deposition occur, bank instability
    • Forecast what is likely to happen if nothing is done
johnson creek feasibility study
Johnson Creek Feasibility Study
  • 2010 – 2011. New agreement negotiated between COA and USACE to cover study (approx 3 years)
  • Budget and schedule presented to COA City Council
  • Five organizations collaborating: COA, USACE, three consultants.
  • Develop plan for Creek in Federal project areas
  • Identify and fully disclose impacts of plan, both positive and negative
  • Comply with all requirements of National Environmental Policy Act (NEPA)
johnson creek project next steps
Johnson Creek Project: Next Steps
  • January 2012: Agreement signed, Study begins
  • August 2012: Complete preliminary exploration of measures to address ecosystem restoration and flood risk management problems and opportunities
  • February 2013: Complete detailed investigations to refine and optimize plan components, determine effects.
  • September 2013: Identify recommended plan (balance benefits against negative impacts).
project conclusion
Project Conclusion
  • March 2014: Complete project document, Integrated Feasibility Report/Environmental Impact Statement (IFR/EIS)
  • April – October 2014: Final Review Period (both External and Public Reviews)
  • December 2014: Feasibility Study complete
  • If funding available, Design (plans & specs) and Construction would take another 3 – 4 years.
environmental engineering challenges opportunities
Environmental / Engineering Challenges & Opportunities
  • Channel migration, erosion, and sedimentation
  • Small stabilization projects vs. system approach
  • Exotic plant species
  • Water quality – Bill Brown to cover
channel migration
Channel Migration
  • Channel migration is natural
  • Erosion and sedimentation rates in equilibrium = dynamically stable
  • Channel migration rate accelerates with increased flow
  • Channel will adjust to balance flow, slope and sediment transport
channel migration small project issues
Channel Migration – Small Project Issues
  • Today’s quick fix = future channel obstruction
  • Create scouring conditions
  • Impacts downstream landowners

Johnson Creek, Reach 5

Johnson Creek, Reach 6

opportunities for stabilization restoration
Opportunities for Stabilization & Restoration
  • Alternative analysis must consider effects to reach and system
  • Reach = segment with similar flow, slope and substrate characteristics
  • Effects include range of items (flow, bank condition, habitat, etc.)
channel stabilization alternatives
Channel Stabilization Alternatives

Wide Channel Section

  • More land required
  • Larger construction disturbance
  • Requires public control of land (purchase / easement)
  • Lower construction cost per unit

Coffee Creek, Edmond, OK

channel stabilization alternatives1
Channel Stabilization Alternatives

Narrow Channel Section

  • Less land required
  • Smaller construction area
  • Requires public control of land (purchase / easement)
  • Higher construction cost per unit

Fort Branch, Austin, TX

exotic invasive species
Exotic & Invasive Species
  • Impact native habitat
  • Tree & shrub species
  • Areas in excess of 3,000 stems / acre
  • Introduced by:
    • Yard waste
    • Flood waters
    • Wildlife
exotic invasive species1
Exotic & Invasive Species
  • Control is a challenging combination
    • Education
    • Chemical, mechanical & manual control
    • Ongoing maintenance
project area
Project Area
  • Refer to map
overview
Overview
  • Evolution of Stormwater Management in Arlington
  • Water Quality Background for Johnson Creek
  • Pollution Prevention & Control
historic problems
Historic Problems
  • Comprehensive land use planning & site design standards did not adequately incorporate watershed and stream protection considerations.
  • No centralized responsibility for stormwater management.
  • Significant funding shortfall for addressing stormwater management.
stormwater management
Stormwater Management
  • Stream channels straightened
  • Channels Paved or Piped
  • Collect stormwater and get it away quickly!!!
problem statement
Problem Statement
  • Urban encroachments increase volume and velocity of stormwater runoff entering the streams.
  • Exceeding conveyance and storage capacity leaves stream banks prone to erosion and failure.
slide32

Floodplain After Filling

And/Or Increased Runoff

2005 citizen policy review committee stormwater charge
2005 Citizen Policy Review Committee Stormwater Charge
  • Stormwater Pollution
  • Erosion & Sedimentation
  • Flooding
  • Debris in Streams & Creeks
  • Aging Infrastructure
  • Funding
summary of the 2005 cprc recommendations
Summary of the 2005 CPRC Recommendations
  • Create a Comprehensive Stormwater Plan
  • Develop Policies for addressing Stormwater Issues
  • Expand Stormwater System Preventative Maintenance Program
  • Address Funding Issues
city response to cprc
City Response to CPRC
  • Retained a consultant to develop a Comprehensive Stream Management Plan
    • Stream inventory
    • Erosion risk identification
  • Addressed Funding Issues
  • Consolidated Stormwater Responsibilities
stormwater management funding
Stormwater Management Funding
  • October 2007 implemented a 4 year Stormwater Utility Fee adjustment
  • Equalized fees for residential and non-residential properties
  • Based upon impervious area
  • Funds Stormwater Management Administration, Operations, Maintenance, & Capital Projects
stormwater management administration
Stormwater Management Administration
  • Stormwater Management re-organized under Public Works & Transportation
  • Administration, Operations, Inspections, & Educational Outreach under Stormwater Executive Manager
  • Promote uniform Stormwater Management Vision
programmatic vision
Programmatic Vision
  • Comprehensive Stormwater Management Program addressing water quality & quantity
  • Establish a program addressing:
    • Administration & Management
    • Maintenance
    • Watershed Planning
    • Public Information & Education
    • Regulatory Enhancements & Guidance
stream management program
Stream Management Program
  • Stream Reach Inventory
  • Stream Cleaning
    • Initial Stream Reach Maintenance
    • Routine Stream Reach Maintenance
    • Emergency Stream Reach Maintenance
  • Stream Bank Stabilization & Restoration
  • Education Outreach
changing stormwater management
Changing Stormwater Management
  • Traditional Method
    • Convey stormwater quickly from site to stream
  • New Paradigm
    • Integrate green design
    • View stormwater as a resource
    • Manage stormwater on-site
    • Reduce pollutant loads to water bodies
water quality
Water Quality
  • City Required to monitor water quality in streams.
  • Cooperate in North Central Texas Regional Stormwater Monitoring Program.
  • Three monitoring locations on Johnson Creek.
    • Johnson Creek at Matlock Road
    • Johnson Creek at Meadowbrook Park
    • Johnson Creek at East Copeland Road
water quality data
Water Quality Data
  • Data for 17 constituents including BOD, pH, TSS, N, P, & Heavy Metals
  • Data consistent with other Metroplex Urban Streams
  • Johnson Creek does NOT currently appear on the EPA 303(d) list of Impaired Streams
  • Data available from the North Central Texas Council of Governments – Cooperative Wet Weather Monitoring
stream pollution sources
Stream Pollution Sources
  • Home Vehicle Maintenance
  • Vehicle & Pressure Washing
  • Household Hazardous Wastes
  • Lawn & Garden Care
  • Pet Waste
  • Litter & Dumping
vehicle maintenance
Vehicle Maintenance
  • Use funnels or pumps to avoid spills
  • Don’t dump used oil and antifreeze in the storm drain
  • Clean up spills
  • Fix leaks
lawn garden
Lawn & Garden
  • Don’t dump yard waste in the storm sewer or stream.
  • Before fertilizing your lawn, test to soil to determine what is needed. (http://soiltesting.tamu.edu/)
  • Consider composting your grass clippings.
  • Apply materials per instructions.
pet wastes
Pet Wastes
  • Dispose of Pet Waste Appropriately
    • Scoop the Poop
    • Don’t dump kitty litter in storm drain or creek
    • Don’t dump flea dip solutions into storm drains
litter dumping
Litter & Dumping
  • Urban drainage systems are designed to take stormwater to the stream. Runoff carries litter.
prevention
Prevention
  • Put trash in appropriate receptacle.
  • Recycle
  • Don’t put your garbage bag in the street gutter.
  • If you see someone dumping in the storm drain or creek, report it:
    • garbage, construction materials, and bulky items to Arlington’s Code Compliance hotline at 817-459-6777.
    • dumping of liquids or spills in creeks and streams to Pollution Prevention Hotline at 817-459-6599.
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