Barton Springs Zone: Basis for a Protection Strategy DRAFT

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Barton Springs Zone Basis for a Protection
StrategyDRAFT
Watershed Protection and Development Review
Department

• July 14, 2006

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Purpose

• Present information on Barton Springs Zone land
  use development patterns
• Grandfathered Properties Other Undeveloped Land
• Open Space
• Existing Developed Area
• City of Austin Jurisdiction and Beyond

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Barton Springs Zone (BSZ)
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BSZ All Jurisdictions
Land Use
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BSZ City of Austin Jurisdiction
Land Use
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BSZ City of Austin Jurisdiction
Undeveloped Parcel Analysis
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BSZ City of Austin Jurisdiction
Undeveloped Parcel Analysis
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Potentially Grandfathered
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(No Transcript)
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Barton Creek ABC West
Barton Creek Section O
Barton Creek Section N
Lantana
Autumn Woods Section 2
gt 50 Acres
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BSZ Land Use for COA Jurisdiction
Potentially Grandfathered 2,727 ac.
SOS-Level Development Agreement 2,202 ac.
4
3
SOS (Unplatted) 10,769 ac.
Single-Family Residential 20,944 ac.
16
31
Undeveloped
8
Commercial/ Multi-Family 5,256 ac.
31
Open Space 21,483 ac.
7
Roads 4,954 ac.
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BSZ Land Use for All Jurisdictions
Single-Family Residential 46,234 ac.
19
Commercial/ Multi-Family 8,234 ac.
3
Roads 8,823 ac.
4
60
Undeveloped 143,795 ac.
14
Open Space 32,685 ac.
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Land Use for Entire Barton Springs Zone
Potentially Grandfathered
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BSZ Jurisdictions
Travis County
(2.8)
(3.7)
City of Austin
(0.4)
Dripping Springs
(28.5)
(29.7)
(0.3)
Blanco County
Hays County
(1.4)
(30.7)
(1.2)
(0.8)
(0.4)
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Barton Springs Zone Trends Impervious Cover
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Barton Springs Zone Trends Population
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Barton Springs Zone Trends Development
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Barton Springs Zone Trends Vehicle Miles Traveled
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Identify strategies for

• Existing Development
• How do we improve water quality with
  redevelopment?

• Open Space
• What is our future strategy for open space?
• How do we spend the bond package money?

• Undeveloped Land
• How do we minimize the impact of grandfathered
  tracts?
• How do we best work with other jurisdictions in
  the BSZ?

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Pollutant/Problem Types

• Nutrients
• Pesticides
• Herbicides
• Hydrocarbons
• Flow Regime
• Sediment
• Bacteria

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Pollutant Sources

• Impervious cover
• Pervious areas
• Infrastructure
• Activities
• Land Uses
• Fauna

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Pollutant SourcesImpervious Cover

• Rooftops
• Roadways
• Parking lots
• Driveways
• Sidewalks
• Trails

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Pollutant SourcesPervious Areas

• Residential landscaping
• Commercial landscaping
• Golf course landscaping
• Sparse vegetation
• Compacted soils
• Erosion/channelized flows
• Rangeland
• Agriculture

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Pollutant SourcesInfrastructure

• Closed runoff conveyance
• Open runoff conveyance
• Wastewater lines
• Wastewater lift stations
• Septic/on-site wastewater systems
• Underground storage tanks

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Pollutant SourcesActivities

• Site construction
• Spills
• Dumping
• Vehicle washing
• (soap)

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Pollutant SourcesLand Uses

• Auto-related businesses
• Convenience stores, food take-out (litter)
• Other hotspot businesses

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Pollutant SourcesFauna

• Pets
• Livestock
• Wildlife
• Illegal
• Camping

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Water Quality Solutions

• Land Use
• Site Design
• Prevention
• Construction
• Site Treatment
• In-Channel

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Land Use

• Regional Planning
• Natural Area Preservation
• Natural Area Restoration

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Site Design

• Stream Buffers/CEF Setbacks
• Conservation Development
• Low-Impact Site Design

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Prevention

• Education and Outreach
• IPM/Landscaping Practices
• Proper Waste Disposal Practices
• Hotspot Facility Inspections
• Wastewater Infrastructure OM

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Construction

• Construction Phasing
• Erosion and Sedimentation Controls
• Construction Inspection

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Site TreatmentRoof

• Green Roof
• Rainwater Harvesting
• Roof Disconnections

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Site TreatmentLandscaping

• Compost Soil Amendments
• Rain Gardens
• Tree Cover/
• Reforestation

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Site TreatmentLandscaping

• Impervious Cover Removal
• Impervious Cover Disconnection

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Site TreatmentPavement

• Bioretention
• Smart Growth Road Dimensions
• Pervious Road Parking Systems

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Site TreatmentConveyance

• Open/Daylighted Drainage
• Spills Response

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Site TreatmentEnd of Pipe

• Recharge Enhancement Structure
• Stormwater Ponds
• Retention-Irrigation
• Wet Pond
• Sedimentation/Sand Filtration
• Extended Detention

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Site TreatmentEnd of Pipe

• Pond Inspection Maintenance
• Non-Erosive Outfalls

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In-Channel

• Natural Channel Armoring

Bear Creek Tributary at Barrel Bend Project
Before
After
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Current WPDR Actions

• Structural WQ Retrofits
• Barton Hills Apartments sand filter retrofit.
• Lundelius tract retrofit.
• WQ Education
• Green Neighbor Program Barton Hills and Circle C
• Pesticide reduction campaign, Spring 2007
• Fertilizer leachate study
• Other
• Retention-irrigation control monitoring
• Land use pollutant load model
• Pond database upgrade
• Coal tar pavement sealant ban

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Structural WQ Retrofits

• BSZ Retrofit Master Plan (1995).
• Lundelius tract retrofit.
• Barton Hills Apartments sand filter retrofit.

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Structural WQ Retrofits
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Selected Studies of theBarton Springs Zone

• BSZ Retrofit Master Plan (1995).
• CRWR Parsimonious Model (1996).
• BSZ Scientific Inventory (2002).
• Groundwater Tracing Study (2004).
• Effluent-Irrigated Golf Course Report (2005).
• Regional Water Quality Protection Plan (2005).
• Barton Springs Water Quality Trend Analysis
  Draft (2006).

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Selected Studies of theBarton Springs Zone

• Barton Springs Zone Retrofit Master Plan (Loomis,
  1995).
• Parsimonious Model for Simulation of Flow and
  Transport in a Karst Aquifer (Barrett
  Charbeneau, 1996).
• Barton Springs Zone Scientific Inventory (COA
  WPDR, 2002).
• Groundwater Tracing Study of the Barton Springs
  Segment of the Edwards Aquifer, Southern Travis
  and Northern Hays Counties, Texas (COA WPDR
  BSEACD, 2004).
• Preliminary Report on Storm Water Runoff from
  Effluent-Irrigated Golf Courses (COA WPDR, 2005).
• Regional Water Quality Protection Plan for the
  Barton Springs Segment of the Edwards Aquifer and
  Its Contributing Zone (Naismith Engineering,
  2005).
• Update of Barton Springs Water Quality Temporal
  Trend AnalysisDraft (COA WPDR, 2006).

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Potential Preservation Restoration
StrategiesBy Land Use
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Single-Family Residential (31)
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Strategies forSingle-Family Residential

• Education and outreach
• Low Impact Development (LID) retrofits
• Water quality pond retrofits
• Creek restoration

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Multi-Family and Commercial (8)
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Strategies forMulti-Family Commercial

• Education and outreach
• Low Impact Development (LID) retrofits
• Large-scaled pond retrofits
• Enhanced pond inspections enforcement
• Redevelopment opportunities (e.g., TOD)
• Mitigation land from redevelopment

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Transportation and ROW (7)
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Strategies forTransportation ROW

• Water quality control retrofits
• Collaborate with TxDOT Counties
• Reduced vehicle trips

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Open Space (31)
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Strategies forOpen Space

• Retrofit for increased recharge, pollution
  removal
• Rangeland management
• Public education

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Undeveloped (23)
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Strategies forUndeveloped Land

• Headwaters buffer zone enhancements per Regional
  WQ Plan
• Land acquisition conservation easements
• Grandfathered properties
• Eliminate grandfathering claims where invalid
• Buy down development rights
• Upgrade structural controls buffers
• Conservation development/clustering
• Mitigation/Transfer of Development Rights
• Improved construction-phase controls