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SECTION 2 Study Area Characteristics Table 2 -5 continued Pollutant Descri tien Sources Eugene's Results Potential Problems Litter and Plastics, Littering, Sampling for litter and These pollutants degrade the other Paper products, Dumping, floatables was not conducted, aesthetic quality of water bodies. Floatable Yard debris, Spills. however, specific problem In addition, they contribute Debris Tires, dumping areas have been pollutants as they decompose, and Metal, identified in Eugene (see they can reduce the capacity of the Glass. notes below). water body. Excess yard debris contributes to high levels of nutrients and it reduces oxygen levels as it decomposes. Based on results from the above monitoring program and the results from state -wide monitoring efforts (ACWA, 1997), industrial and commercial land uses have been identified as significant sources of stormwater pollutants (i.e., high source areas). In the River Road Santa Clara basin, the commercial and industrial areas are in the following locations: • Along Highway 99. • Along the Northwest Expressway. • Along Prairie Rd. • In the vicinity of the Beltline, River Road intersection. 2.6.1.2 Field Observations of Water Quality Problems In addition to the information obtained from the stormwater monitoring data described above, specific water quality related problems /issues have been observed in this basin as follows: Excessive Sediment: Elevated levels of sediment have been observed in Spring Creek, potentially due to poor erosion control practices at construction sites. Tip -ups: Sediment and debris that has been observed to accumulate in tip -ups is likely getting flushed into downstream open waterways during larger storm events. Debris in the Open Waterways: Significant amounts of trash and debris are dumped into the open waterways in this basin and maintenance access is often limited for removing debris. 2.6.2 Oregon Department of Environmental Quality Water Quality Limited Designations [303(d) List] The federal Clean Water Act requires states to maintain a list of water bodies that do not meet water quality standards. These standards are established to protect beneficial uses such as drinking water, fisheries, industrial water supply, recreational, and agricultural uses. This list is called the 303(d) list based on the section of the Clean Water Act that mandates this requirement. The list is meant only as a means of identifying water quality problems and not the causes. States must monitor water quality and review available data and information to determine if the standards are being met. In Oregon, this responsibility is carried out by the Department of Environmental Quality (DEQ). If available data indicate a water body is not meeting water 0:\25695978 Eugene RR -SC Final Basin P1an\Master P1anTINAL 2- 2010\Master_Plan 3- 11- 10_FINAL_ Word _Version.doc 11 -22