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Optimization (also treatment optimization) means a best management practice (BMP) resulting
<br /> in the refinement of WWTP operations that lead to improved effluent water quality and/or
<br /> treatment efficiencies.
<br /> Outfall means the location where the site's wastewater discharges to surface water.
<br /> Overburdened community means a geographic area where vulnerable populations face
<br /> combined, multiple environmental harms and health impacts, and includes, but is not limited
<br /> to, highly impacted communities as defined in RCW 19.405.020.
<br /> Owner means a town or city, a county, a sewer district, board of public utilities, association,
<br /> municipality or other public body.
<br /> Permittee means an entity that receives notice of coverage under this general permit.
<br /> Point source means any discernible, confined, and discrete conveyance, including but not
<br /> limited to, any pipe, ditch, channel,tunnel, conduit, well, discrete fissure, and container from
<br /> which pollutants are or may be discharged to surface waters of the State. This term does not
<br /> include return flows from irrigated agriculture.
<br /> Pollutant means dredged spoil, solid waste, incinerator residue, filter backwash, sewage,
<br /> garbage, domestic sewage sludge (biosolids), munitions, chemical wastes, biological materials,
<br /> radioactive materials, heat, wrecked or discarded equipment, rock, sand, cellar dirt, and
<br /> industrial, municipal, and agricultural waste.
<br /> Pollution means contamination or other alteration of the physical, chemical, or biological
<br /> properties of waters of the State; including change in temperature, taste, color, turbidity, or
<br /> odor of the waters; or such discharge of any liquid, gaseous, solid, radioactive or other
<br /> substance into any waters of the State as will or is likely to create a nuisance or render such
<br /> waters harmful, detrimental or injurious to the public health, safety or welfare; or to domestic,
<br /> commercial, industrial, agricultural, recreational, or other legitimate beneficial uses; or to
<br /> livestock, wild animals, birds, fish or other aquatic life.
<br /> Receiving water means the water body at the point of discharge. If the discharge is to a storm
<br /> sewer system, either surface or subsurface, the receiving water is the water body to which the
<br /> storm system discharges. Systems designed primarily for other purposes such as for ground
<br /> water drainage, redirecting stream natural flows, or for conveyance of irrigation water/return
<br /> flows that coincidentally convey stormwater are considered the receiving water.
<br /> Representative sample (also representative sampling) means a wastewater sample which
<br /> represents the flow and characteristics of the discharge. Representative samples may be a grab
<br /> sample, a time-proportionate composite sample, or a flow proportionate sample.
<br /> Salish Sea means Puget Sound, Strait of Georgia, and Strait of Juan de Fuca, including their
<br /> connecting channels and adjoining waters.
<br /> Puget Sound Nutrient General Permit Page 54
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