5.5. SR 08-06-2007 - Laserfiche WebLink

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consequences of any potential water quality trends and includes a discussion of BMPs that were considered to address nondegradation (as well as wetland and stream morphology impacts), as far as is reasonable and practical through future development, retrofit and mitigation. · The modeling results will show the changes in TP, TSS and volume since 1988 and the changes expected by 2020 for each of the major watersheds in the City. Barr will apply accepted BMP ef- fectiveness to any updates of the loadings assessment estimates for newly developing or redevel- oping areas, based on the ordinances and design requirements currently in place or proposed by the City, watershed organizations, Wetland Conservation Act and the MPCA. The final report will including mapping of the following: o Receiving waters, high quality waters, impaired waters and watersheds impacted by any potential new discharge o Significant discharge locations within each watershed o Soil classifications and potential for infiltration practices · If the updated assessment indicates that future pollutant loadings and flow will still exceed those estimated for 1988, Barr will note the results and summarize key points in the Nondegradation Report that are intended to address the loadings and receiving water impacts using reasonable and practical BMP alternatives. The Restricted Waters Assessment will eliminate expanded dis- charges wherever possible, and evaluate all other prudent and feasible alternatives to increasing volume and pollutant loadings in storm water discharges to the OR VW surface waters. · The Nondegradation Report will also document how the city will be planning ahead for meeting the TMDL requirements associated with the MPCA's impaired waters program. · As part of the report preparation, the remaining submittals for the MPCA, and recommendations for modifications to the SWPPP will be prepared; the public and local water authority comments on the proposed SWPPP modifications will address nondegradation, with a rec;ord of decision on the comments. · Our scope includes one meeting at the city with all of the interested local water management au- thorities or the MPCA to present the results of the Loading Assessment/Nondegradation Report and solicit their questions and comments. Barr assumes no significant modification will be re- quired for preparing the [mal report. Task 3 Deliverables 1. Five printed copies and an electronic version of the Nondegradation Report 2. Mapping in electronic format 3. Attendance and presentation at one meeting at the city with local water management authorities or the MPCA Barr Engineering Company Page 13