Laserfiche WebLink
SECTION 4 <br />Water Quality Evaluation <br />being transferred, untreated, to surface waters. In general, pollutant loads in the River Road <br />Santa Clara basin (based on 2007 land use data) could potentially increase by up to 85% as a <br />result of future development and drywell decommissioning, if treatment and /or other forms of <br />infiltration are not provided for flows associated with drywell decommissioning. <br />Figure 4 -1 <br />Estimated Total Suspended Solids Loads Per Year in <br />the River Road Santa Clara Basin (UGB) <br />Estimated TSS Pounds Per Year in <br />1,000 <br />River Road Santa Clara Basin Relative to the >Range ;,of <br />the River Road Santa Clara Basin <br />Pounds > <br />TSS Pounds Per Year in Other Eugene Basins <br />From Existing Development <br />1,403 <br />(assuming drywells in place and <br />functioning) <br />20 <br />Potential Increase from Development <br />740 <br />+ <br />of Vacant Land <br />85 <br />Potential Increase from Drywell <br />434 <br />:♦ <br />Decommissioning <br />Total Buildout <br />2,597 <br />1,000 2, 3,000 4,000 5,000 <br />Figure 4 -2 <br />Estimated Increases in Total Suspended Solids Loads Associated with Future Buildout in <br />the River Road Santa Clara Basin (within the UGB) <br />Percentage <br />1 <br />25 50 75 100 125 <br />0:A25695978 Eugene RR -SC Final Basin PlanVMaster Plan \FINAL 2- 2010AMaster Plan 3 -11 -10 FINAL Word Version AW Sec 2 Corr.doc 4-5 <br />River Road Santa Clara Basin Relative to the Range of <br />Estimated Increase in TSS Loads <br />Percent <br />Increase in TSS Loading in Other Eugene Basins <br />Potential Increase from Future <br />54 <br />Development <br />Potential Increase from Drywell <br />20 <br />Decommissioning <br />Total Potential Increase <br />85 <br />Percentage <br />1 <br />25 50 75 100 125 <br />0:A25695978 Eugene RR -SC Final Basin PlanVMaster Plan \FINAL 2- 2010AMaster Plan 3 -11 -10 FINAL Word Version AW Sec 2 Corr.doc 4-5 <br />