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SECTION 2
<br />Study Area Characteristics
<br />Table 2 -5
<br />Summary of Stormwater Quality Monitoring in Eugene
<br />Pollutant
<br />Description
<br />Sources
<br />Eugene's Results
<br />Potential Problems
<br />Bacteria
<br />Enterococcus,
<br />Animal Wastes (droppings
<br />Results from almost all of
<br />These are commonly used
<br />Fecal coliform, and
<br />from wild /domestic
<br />the samples significantly
<br />indicators of pathogens.
<br />Fecal streptococcus
<br />animals),
<br />exceeded the DEQ standard
<br />Water contact may cause eye and
<br />Human Wastes (leaking
<br />for water quality.
<br />skin irritations and gastro-
<br />sanitary sewer pipes, and
<br />intestinal diseases if swallowed.
<br />seepage from septic tanks).
<br />Heavy
<br />Antimony Arsenic
<br />Vehicles (combustion of
<br />Cadmium, chromium, copper,
<br />Heavy metals are toxic to
<br />Metals
<br />Beryllium Cadmium
<br />fossil fuels, improper
<br />lead, nickel, and zinc were
<br />freshwater aquatic ecosystems.
<br />Chromium Copper
<br />disposal of car batteries,
<br />typically present in samples.
<br />These metals are considered to be
<br />Lead Mercury
<br />wear /tear of tires and brake
<br />the most significant toxic
<br />Nickel Selenium
<br />pads),
<br />Copper, lead, and zinc in
<br />substances which are commonly
<br />Silver Thallium
<br />Metal Corrosion,
<br />stormwater samples
<br />found in urban stormwater runoff.
<br />Zinc
<br />Pigments for Paints,
<br />frequently exceeded DEQ
<br />Solder,
<br />standards for the protection
<br />Fungicides,
<br />of aquatic life.
<br />Pesticides,
<br />Wood Preservatives
<br />Oil &
<br />A broad group of
<br />Food Wastes (animal and
<br />Two of fifty -three samples
<br />These compounds can coat the
<br />Grease
<br />pollutants including:
<br />vegetable fats from
<br />had concentrations which
<br />surface of the water limiting
<br />garbage),
<br />exceeded discharge
<br />oxygen exchange, clog fish gills,
<br />Animal fats, and
<br />Petroleum Products (gas,
<br />limitations specified for
<br />and cling to waterfowl feathers.
<br />Petroleum products.
<br />engine oil, lubricants, etc.).
<br />industrial stormwater
<br />When ingested these compounds
<br />discharges (i.e., > 10 mg /L).
<br />can be toxic to birds, animals and
<br />other aquatic life.
<br />Sediments
<br />Sediments in the water
<br />Erosion from increased
<br />Excess levels were measured
<br />Sediments cause increased
<br />are considered pollutants
<br />stream flows,
<br />at all stations. Results from
<br />turbidity, reduced prey capture for
<br />when they exceed natural
<br />Construction site runoff,
<br />the urban sampling stations
<br />sight feeding predators, clogging
<br />concentrations and
<br />Landscaping activities,
<br />in Eugene were all 40% to
<br />of gills /filters of fish and aquatic
<br />negatively affect water
<br />Agricultural activities,
<br />70% higher than results
<br />insects, and blocked light which
<br />quality and /or beneficial
<br />Logging,
<br />from an open space (i.e.,
<br />limits food production available
<br />uses of the water.
<br />All other activities where
<br />undeveloped) sampling.
<br />for fish. Sediments also
<br />the ground surface is
<br />accumulate in stream bottoms
<br />disturbed.
<br />which reduces the capacity of the
<br />stream (and hence increases the
<br />potential for flooding) and covers
<br />stream bottom habitats. Sediment
<br />also acts as a carrier of toxic
<br />pollutants such as metals and
<br />organics.
<br />Nutrients
<br />Nitrate
<br />Landscaping activities,
<br />The DEQ guidance value of
<br />Excess levels of nutrients can lead
<br />Ammonia
<br />Yard debris,
<br />0.1 mg /L for total
<br />to eutrophication in downstream
<br />Kjeldahl Nitrogen
<br />Human wastes (leaks from
<br />phosphorus was exceeded in
<br />receiving waters. Problems
<br />Phosphorus
<br />septic tanks and sanitary
<br />100% of the samples
<br />include surface algal scums,
<br />Orthophosphate
<br />sewers),
<br />collected.
<br />odors, reduced oxygen levels, and
<br />Animal wastes,
<br />dense mats of algae. In addition
<br />Vehicle exhausts,
<br />to water quality problems, these
<br />Agricultural activities,
<br />effects have anegative impact to
<br />Detergents (car washing),
<br />the aesthetic quality of water
<br />Food Processing
<br />bodies.
<br />Organics
<br />There are many organic
<br />Illegal dumping,
<br />Although sampling for these
<br />Most synthetic organics are highly
<br />compounds, however, the
<br />Illicit connections,
<br />compounds was limited, nine
<br />toxic to aquatic life at very low
<br />synthetic organics are of
<br />Spills,
<br />volatile organic compounds
<br />concentrations, and many are
<br />most concern and
<br />Leaks from drums and
<br />were detected (including
<br />carcinogenic (cancer causing) or
<br />include:
<br />storage tanks,
<br />one pesticide).
<br />suspected carcinogens. Diazinon
<br />Fuels
<br />Landscaping activities
<br />has been identified in many recent
<br />Solvents
<br />Agricultural activities.
<br />studies as one of the causes of
<br />Pesticides
<br />toxicity in stormwater.
<br />Herbicides.
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