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SECTION 4 water Quality Eualuatiou Other Water Quality CPs In addition to the three CP options described above (i.e., pre- treatment associated with piped retrofits, neighborhood -scale rain gardens, and street side rain gardens associated with street improvements), CPs were developed to address results of the pollutant loads evaluation and to address observed stream stability issues. The pollutant loads evaluation showed that commercial and industrial land uses discharge relatively higher pollutant loads when compared to residential and open land uses. Therefore, a list of projects was developed to retrofit the piped systems in these high source areas to include structural water quality facilities such as sedimentation manholes and select proprietary stormwater treatment devices that incorporate filtration to reduce the pollutant load. As part of the basin planning process, a City -wide annual budget line item was included to construct these types of projects. RRSC -1 - Citywide Annual Budget Line Item — Stream Bank Stabilization: This proposed project alternative includes using bioengineering techniques to stabilize the creek bank at locations where problems have been observed or are expected to occur as a result of future development. RRSC -2 - Citywide Annual Budget Line Item — High Source Areas: Single or multiple facilities may be appropriate for these high source areas, and the facilities should be selected and designed to treat the particular pollutant of concern based on specific site conditions. The following ten potential locations for these retrofits were identified: Willamette Overflow major subbasin 1) Node 68485 18" diameter pipe that runs south along River Road 2) Nodes 58315, 58314, 58313 and 58312 27" diameter pipe that runs east along Division Avenue 3) Nodes 72406 and 66531 24" diameter pipe that runs east along Division Avenue 4) Node 58319 12" diameter pipe along Division Avenue 5) Node 67014 15" diameter pipe south of Beltline Road Spring Creek major subbasin 1) 48" pipe east of River Road, north of River Loop 2, south of Swain Lane Flat Creek major subbasin 1) Nodes 72206, 72210, 72215, 72218, 72223 24" diameter pipe south of Irvington Drive 2) Node 72321 18" diameter pipe along Zinfandel Lane 3) Node 72326 10" diameter pipe along Napa Valley Lane A -1 major subbasin 1) Nodes 59020, 59021 54" diameter pipe that runs west along Maxwell between Bushnell Ln. and N. Park Ave. 0:A25695978 Eugene RR -SC Final Basin P1an\Master P1anTINAL 2- 2010\Master_Plan 3- 11- 10_FINAL_ Word _Version.doc 4-33