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Vashon-Maury Island Groundwater Protection Committee Resource Notebook. By: Valorie Cogswell, Kat Crowley-York, Evan Maxim, Erica Slotkin, Heather Spears. Vashon-Maury Island: Satellite Image. Vashon-Maury Island: Groundwater Management Area.
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By: Valorie Cogswell, Kat Crowley-York, Evan Maxim, Erica Slotkin, Heather Spears
Island: Satellite Image
Protection of Groundwater from Contamination
• Safe Drinking Water Act 1974
• Safe Drinking Water Act amendment of 1986
• Wellhead Protection Program of 1987.
Office of Wellhead Protection
• Growth Management Act (GMA). Washington Administrative Code (WAC 365-190-080 ) designation of Critical Aquifer Recharge Areas
Category I critical aquifer recharge areas include those mapped areas that King County has determined are highly susceptible to groundwater contamination and that are located within a sole source aquifer or a wellhead protection area.
Category II critical aquifer recharge areas include those mapped areas that King County has determined
• have a medium susceptibility to ground water contamination and are located in a sole source aquifer or a wellhead protection area; or
• are highly susceptible to ground water contamination and are not located in a sole source aquifer or wellhead protection area.
Category III critical aquifer recharge areas include those mapped areas that King County has determined have low susceptibility to groundwater contamination and are located over an aquifer underlying an island that is surrounded by saltwater. This includes all of Vashon and Maury Islands that is not either Category I or Category II.
Vashon- Maury Island CARAs
• 15 or more connections
• 22 Group A Systems on Vashon-Maury Island
• Washington State Department of Health
Wellheads - Group A System, Vashon-Maury Island
• Between 2 and 14 connections
• 100 + Group B Systems on Vashon-Maury Island
• King County Department of Health
Drawing Water from Aquifer - Group A System, Vashon Island
• Cost management
• Operator errors
• Testing quality and quantity
Collection and Treatment - Group A System, Vashon Island
Exempt well: Wells exempt from the requirement to obtain a water right/permit from Department of Ecology. These are usually wells for single-family domestic use that consume less than 5,000 gallons per day. By Department of Health practices, an exempt well serves 6 or fewer homes.
• Collect more water quality data on individual residents’ properties where possible through Community Education Program
• Educate well owners on proper well maintenance and wellhead protection
• Decide on future exempt well usage and limit new construction
Growth on Vashon-Maury Island from 1990 – 2000 was 9%, and is expected to continue at 1% per year for the next 10 years.
Water levels in the aquifer are already dropping.Why?
Water Reuse (a.k.a. Use of Greywater) – the use of water that is otherwise clean and headed for the sewer (or septic system).What?
Initiated leak repair, corrosion control program, conservation-based water rates, a high-efficiency showerhead replacement program, and toilet retrofits and replacement.
9 years later, Ashland has reduced its water demand by 395,000 gallons per dayWater Conservation & Small Utilities / Cities – Ashland, OR
Soil Management, Pesticides,
Herbicide, and Fertilizer Use
• The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
• The Pesticide Registration Improvement Act (PRIA)
• Title 15: Agriculture and Marketing – chapter 15.58: Washington Pesticide Control Act
• Title 17: Weeds, Rodents, and Pests – chapter 17.21: Washington Pesticide Application Act
• Title 70: Public Health and Safety – chapter 70.102: Hazardous Substance Information
• Title 70: Public Health and Safety – chapter 70.104: Pesticides-Health Hazards
• Title 70: Public Health and Safety – chapter 70.105: Hazardous Waste Management
• Title 70: Public Health and Safety – chapter 70.105D: Hazardous Waste Cleanup-Model Toxics Control Act
• 16-200: Fertilizers
• 16-201: Fertilizer Bulk Storage and Operational Area Containment Rules
• 16-228 General Pesticide Rules
• 16-229: Secondary and Operational Area Containment for Bulk Pesticides
• 16-231: Restricted Use Herbicides
• 16-233: Worker Protection Standards – subsections 16-233-200 through 16-233-255: Standards for Pesticide Handlers
• Code of the King County Board of Health: Title 7: Pesticides
• Code of the King County Board of Health: Title 11: Hazardous Chemicals
• King County's 1999 Integrated Pest Management Executive Order
• Monitoring and inspection
• Action only when necessary
• Documented performance
• Least-toxic options
• Effective pest management
• Continuous improvement
• Communication and outreach
• Reduction in health and environmental risk is the bottom line
• Heat weeding via boiling water and/or steam
• Flame weeding
• Compost tea
• Insects (European Crane Fly)
• Get kids involved – field trips, assemblies, hands-on workshops and homework assignments, 'Pesticide awareness day', etc.
• Create an IPM factsheet and require that it be distributed by all businesses that sell pest-control chemicals
• Require all businesses that sell pesticides to vend non-chemical alternatives
• Fund educational workshops for home and business owners
• Continue monitoring ground and surface water
• Bring the community together over the issue – host a 'Green Gardening Fair' every summer