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Ms. Katie Larsen <br />12/03/2025 <br />Page 2 <br />WSB (12/3/2025) Complete <br />3. Keep swale a minimum of 5' within drainage and utility easement <br />Hill (11/10/2025) Plans revised as recommended. <br />WSB (12/3/2025) Most areas revised. Some areas remain. <br /> <br />4. Verify whether the berm on the north side of the development needs to be higher <br />than the EOFs to prevent directing water to the north <br />Hill (11/10/2025) Berm height of 0.5’ minimum is provided to direct drainage to <br />proposed storm sewer inlets. <br />WSB (12/3/2025) Verify all water for 100-yr storm event is directed to Pond 6 <br /> <br />5. All grading and construction in the Electric Transmission line utility easement to be <br />approved by the utility provider <br />a. Verify all revised clearances and cover around structures following proposed <br />grading meet requirements <br />Hill (11/10/2025) Coordination with GRE is ongoing, including potential pole <br />relocation, if needed. <br />WSB (12/3/2025) Continue coordination <br /> <br />6. Verify rear grade off the back of building pads to create a more usable back yard <br />Hill (11/10/2025) Plans revised as recommended. <br />WSB (12/3/2025) Complete <br />7. Provide EOFs for all low points in the roadway and green spaces <br />Hill (11/10/2025) Plans revised as recommended. <br />WSB (12/3/2025) Complete <br />8. All swale grades to meet minimum 2% slopes <br />Hill (11/10/2025) Plans revised as recommended. <br />WSB (12/3/2025) Complete <br />9. WSB (12/3/2025) Flip driveways away from adjacent intersections where possible <br />10. WSB (12/3/2025) Keep proposed driveways out of side drainage and utility <br />easements. <br /> <br /> <br />• Stormwater Management <br /> <br />Stormwater management for the Peltier Ponds site consists of multiple sedimentation basins <br />and irrigation reuse to provide treatment. Additional stormwater management requirements <br />are set beyond standard City and RCWD rules based on the site’s location within the <br />Northeast Drainage Area Comprehensive Stormwater Management Plan (CSMP). Based on <br />City interpretation of the CSMP, it appears the design is generally compliant with these <br />requirements, though additional information is requested. Upon review of the CSMP with <br />RCWD, site design does not meet those requirements. The 0.1 cfs/acre requirement must <br />be met for all discharge points on the site since all flows ultimately route to Peltier Lake. <br />Existing and proposed discharge rates are summarized below. <br /> <br />Pre- and Post- Development Discharge Rates (cfs) <br />Condition <br />2-Year 10-Year 100-Year 10-Day Snowmelt <br />Peltier Ponds Development - Engineering Review <br /> <br />