12/11/2024 PZ Combined Packet - Laserfiche WebLink

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Ms. Katie Larsen 12/4/2024 Page 4 Spargur Estates Engineering Review 4 Provide written documentation to the City prior to construction (Plowe 11/15/24) See #3 above (WSB 12/4/24) - Complete •(WSB 11/6/24) The Lowest Opening Elevation (LOE) of Lots 2 and 3 must be at least 910.7 to maintain minimum freeboard with the EOF (908.7) 1 The Lowest Floor elevation must be a minimum 909.4 (SELO) (Plowe 11/15/24) See #3 above Low floors are 2-feet above the two basins’ HWLs; low openings are 1-foot above the EOF (908.7). (WSB 12/4/24) Low openings (currently 909.7) need to be 2’ above the EOF (908.7) •Stormwater Management Stormwater management for the site consists of a small read yard depression. However, based on site layout, stormwater management is not required under City ordinance. Comments on the proposed stormwater design are offered below. Pre- and Post- Development Discharge Rates (cfs) Condition 2-Year 10-Year 100-Year 10-Day Snowmelt Existing 0.66 1.80 4.92 Not required Proposed 0.59 1.85 4.81 Not required Comments: 1.There are minor increases in site runoff rates due to the new impervious. However, as stormwater management requirements are not triggered, these increases are not regulated. Runoff to the north and south will be captured by storm sewer routing to City ponds. (Plowe 10/15//24) Noted. (WSB 11/6/24) Complete 2.Sufficient freeboard is available between the depression modeled HWL and the proposed household low floors/low entries. (Plowe 10/15//24) Per client request, the units shown are now split-entry walkouts; these low floors had to be raised to meet the 2-ft freeboard requirement. (WSB 11/6/24) The revised lowest openings for Lots 2 and 3 no longer meet minimum freeboard requirements with the adjacent EOFs (909.5+). It is necessary to maintain (Plowe 11/15/24) Lowest openings have been raised to be 1-ft above the ultimate EOF of 908.7. (WSB 12/4/24) Low openings (909.7) need to be 2’ above the EOF (908.7)