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This presentation covers the different types of pollution in Spokane County, WA and the different efforts that are being made to clean the water.
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Water Pollution & ProtectionIn Spokane County
Brett Ford & Kyle Luiten
POLLUTION
Heavy Metals
– Arsenic– Beryllium – Cadmium– Hexavalent Chromium– Lead – Mercury
Arsenic
• Semi-metal natural element• Used as a wood preservative• Gets into water when:– Large deposits are eroded– Orchards create runoff– Glass and electronic production waste is washed
away
Beryllium
• Man made metallic element• Used for alloys in nuclear reactors and planes • Gets into water from:– Erosion of natural deposits– Industrial waste discharge
Cadmium
• Natural metallic element.• Used as a coating on transportation and
baking equipment • Can get into water from:– Corrosion of pipes – Erosion from natural deposits
Hexavalent Chromium
• Naturally occurring metallic element • Used as a metal alloy in various things• Gets into water when eroded from natural
deposits• Causes cancer
Lead
• Naturally occurring metallic element• Used in plumbing, paint and a variety of other
household items• Usually enters water through corroded pipes
Mercury
• Naturally occurring liquid metal • Used in fluorescent light bulbs and many other
items• Can get into water via:– Erosion of natural deposits – Runoff from factories, landfills, and farmland
• There are four types of chemical pollution– Heavy metals– PCBs (polychlorinated biphenyls)– PBDEs (Polybrominated diphenylethers)– Dioxins
• All of these pollutants can contaminate groundwater , aquifers and ordinary wells as well as rivers
Chemical Pollution
PCBs
• Organic chemicals that are used for:– Hydraulic fluids– Adhesives– Fire retardants – Capacitors
• PCBs get into water through runoff of landfills
PBDEs
• Man made• Combined with the chemical bromine – (dark red chemical from the halogen family)
• Used as a fire retardant and a furniture stuffer• It is uncertain how PBDEs enter the water – Found toxic in 2005
Dioxins
• Organic solids• Not used commercially in the United States• Get into water via runoff of waste incineration
Storm Water Pollution
• Water from large rainfalls and flash floods as well as normal floods
• On its way to the sea it collects pollutants• Supposed to drain off of streets– Overloaded sewers create contaminated floods
Household Pollutants
• Antifreeze• Motor oil• Paint• Pesticides• Pet/livestock waste
PROTECTION
What Needs Protection?
• Spokane River• Aquifer– Our source of clean drinking water– Wells and springs
• The local watershed
Spokane Aquifer
• One of the largest water supplies in the U.S.• Clean drinking water source• Many household items pollute the aquifer– Antifreeze– Paint– Motor oil
Spokane River
• 6th most polluted in the nation• Sewage / storm water drain overflows• PCB’s• Arsenic
• Tributary of the Columbia River– Everything we do goes downstream
What Are We Already Doing?
• Wastewater Treatment Plant– Controls polluted rainwater from the streets
• Spokane Riverkeeper– Education
• Hazardous waste pickup services– Mostly for those over the aquifer
Wastewater Treatment Plant
• Doesn’t just treat sewage• Anything that goes down the drain stops here– Most is treated before it pollutes the water table
Spokane Riverkeeper
• Educates people about our water– Protection as well as conservation
• Working to free the watershed of contamination– Result: The river will be returned to its original
state
Hazardous Waste Pickup
• Safe way to dispose of commercial hazards• Many in effect for those over the aquifer– Started recently to minimize pollutants– Replaces cheep dumping with cheep collection
• Spokane Solid Waste Management– Waste to Energy facility
What Do We Still Need To Do?
• Sewer Overflows (CSO)– Fats, Oils, and Greases
• Contaminating household products– Paints– Motor oil– Antifreeze
What Can We Do?
• Dispose of chemicals properly• Recycle metals• Control certain activities, such as:– Changing motor oil– Painting a house
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REFERENCES
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REFERENCES
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