taunton river watershed study presentation - part 2 ... · taunton river watershed study...
TRANSCRIPT
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Bridgewater State UniversityVirtual Commons - Bridgewater State University
Public Meetings Taunton River Watershed Project
2007
Taunton River Watershed Study Presentation - part2: Progress Report/Data Collection/Analysis( June 13, 2007 Public Meeting)Horsley Witten Group, Inc.
This item is available as part of Virtual Commons, the open-access institutional repository of Bridgewater State University, Bridgewater, Massachusetts.
Recommended CitationHorsley Witten Group, Inc. (2007). Taunton River Watershed Study Presentation - part 2: Progress Report/Data Collection/Analysis( June 13, 2007 Public Meeting). Taunton River Watershed Project Public Meetings. Item 14.Available at: http://vc.bridgew.edu/taunton_riv_meetings/14
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Horsley Witten Group
Progress ReportData Collection/Analysis
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Horsley Witten Group
Public Water Supply Service Areas
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Horsley Witten Group
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Horsley Witten Group
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Horsley Witten Group
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Horsley Witten Group
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Horsley Witten Group
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Horsley Witten Group
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Horsley Witten Group
Title 5 Septic Systems
Municipal Wastewater Plants
Private Wastewater Plants
Private Wells
Public Wells
Impervious SurfacesStormwater Runoff
USGS Precip RechargeBased on Geo, Impervious,
Land Use
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Horsley Witten Group
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Horsley Witten Group
Taunton River Watershed Management PlanDraft Phase II Outline
1. Additional Data Collection and Analysis Needs
2. Management Approaches and Tools
3. Implementation Plan
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Horsley Witten Group
MANAGEMENT MANAGEMENT STRATEGIES & TOOLSSTRATEGIES & TOOLS
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Horsley Witten Group
INTEGRATED WATER MANAGEMENT
Water Supply Withdrawals
StormwaterTreatment and Recharge
Wastewater Treatment and Recharge
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Water Table MapWith Groundwater
Flow Arrows
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Horsley Witten Group
Zone II
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Horsley Witten Group
WWTP
Zone II
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Horsley Witten Group
WWTP
Zone II
Interceptor/IrrigationWells
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Horsley Witten Group
Water Supply Options
• Stop using drinking water to water gardens and lawns
• Protect drinking water protection areas (source water protection areas)
• Transfer development rights from source water protection areas
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Horsley Witten Group
Collection of roof runoff in rain barrels for irrigation
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Horsley Witten Group
Stormwater Options
• Use roof runoff as irrigation source (rain barrels & cisterns)
• Treat and infiltrate runoff from roads & parking lots (recharge drinking water supply and baseflow)
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Horsley Witten GroupPhoto Copyright 1999, Center for Watershed Protection
Infiltration of Roof Runoff = baseflow to stream
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Horsley Witten Group
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Horsley Witten Group
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Horsley Witten Group
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Horsley Witten Group
Stormwater Recharge
• Each acre of impervious =• 1000 gals/day of surplus water
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Horsley Witten Group
Wastewater Options
• Treat and return wastewater flows as recharge within the basin
• Treat pharmaceutials/nitrosamines • Treat and re-use wastewater for
irrigation (golf courses, etc)• Village-scale treatment systems
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Horsley Witten Group
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Horsley Witten Group
Smart Growth Options
• Transfer of Development Rights (TDR)• Village Centers/Growth Incentive Zones• Low-Impact Development (LID)• Chapter 40R/40S
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Horsley Witten GroupBetter Site Planning
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Horsley Witten GroupPhoto Copyright 1999, Center for Watershed Protection
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Horsley Witten Group
Impervious Cover Reduction
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Horsley Witten Group
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Horsley Witten GroupPreserved Historic Sandwich Road
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Horsley Witten Group
Horsley Witten
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Horsley Witten Group
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Horsley Witten Group
What If?……...
• Each new development minimized impacts= slow deterioration
• Each new development caused no new net impacts
= no improvement/status quo
• Each new development produced a positive impact
= restoration
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Horsley Witten Group
Water Management Practices & Perceptions
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Horsley Witten Group
Conservative Estimates of U.S. Polluters
Over-Fertilizers
Bad Dog Walkers
Chronic Car Washers
Septic Slackers
Bad Mechanics
Pesticide Sprayers
Hosers 15 million15 million
43 million43 million
3 million3 million15 million15 million
27 million27 million
16 million16 million
38 million38 millionSource: Center for Watershed ProtectionCenter for Watershed Protection
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Horsley Witten Group
Frequent Fertilizers
• There are 20-30 million acres of lawn in the U.S.
• If lawns were a crop, they’d rank fifth on the basis of area
• Nutrient runoff from lawns can cause eutrophication in streams, lakes & estuaries
• 52% of people who fertilize OVER-fertilize• Only 10-20% of lawn owners perform soil tests
first
Source: Center for Watershed ProtectionCenter for Watershed Protection
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Horsley Witten Group
Regional Residential Insecticide & Herbicide Use
0
10
20
30
40
50
60
70
80
Percentage
Use Insecticides Use Herbicides
Warm RegionsMid-AtlanticCold Regions
No dataNo data
Center for Watershed ProtectionSource : Center for Watershed Protection
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Horsley Witten Group
Poor Pooch Poop Scoopers
• 41% of people own dogs• Of dog walkers, 41% admit they rarely
or never clean up• Of these, 44% would not clean up even
with a fine, complaints, collection or disposal methods
• However, 63% agreed that pet wastes contribute to water quality problems
Center for Watershed Protection
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Horsley Witten Group
Chronic Car Washers• 55-70% of households wash their own cars• 60% are “chronic car washers” who wash
their car at least once a month• 70-90% report that their wash water drains
directly to the street and eventually, the storm drain
Center for Watershed Protection
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Horsley Witten Group
•• 1 in 4 U.S. households has a 1 in 4 U.S. households has a septic systemseptic system
•• Septic system failure rates are 5Septic system failure rates are 5--35%35%
•• 50% of owners are 50% of owners are ““septic septic slackersslackers”” who have not cleaned who have not cleaned or inspected their system in the or inspected their system in the last three years last three years
•• 12% have no idea where their 12% have no idea where their system is located on their system is located on their propertyproperty
Septic SlackersSeptic Slackers
Source: Septic Protector
Center for Watershed Protection
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Horsley Witten Group
Bad Mechanics
• Only 30% of car owners change their own fluids
• Of these, 80% claim to dispose/recycle their fluids properly
• Only 1-5% dump oil and antifreeze into the storm drain
Center for Watershed Protection