21 C20-2023-045 - Site Plan Lite Phase 2 & Infill Lots Staff Presentation — original pdf

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Infill Plats & Site Plan Lite: Update on Staff Proposal Planning Commission| Oct. 22, 2024 Changes to Staff Proposal Since 08/27/2024 Commission Meeting Change Effect Revise Sec. 25-7-67 to increase site area for “no drainage review” tier for resubdivisions from 0.25 acres to 11,500 square feet. Facilitates re-subdivision into two HOME-1 lots and provides greater flexibility for re-subdividing into HOME-2 lots. TPW to implement a policy providing automatic relief from right-of-way dedication for infill projects on Level 1 streets that meet a few simple criteria. By eliminating requirement to obtain a waiver, this policy will help reduce review times and streamline the permitting process for infill projects. PARD to streamline process for approving payment of fee in-lieu for residential infill projects. Reduce review times and streamline the permitting process for infill projects. Recap of Staff Proposal: Infill Plats Example “Greenfield” Subdivision For scale: A ¼-acre area, eligible for streamlined resub per “Infill Plat” proposal Summary of Infill Plat Proposal: Drainage Code Amendments Lot Size Proposed Requirements for Resubdivision Additional Info. Up to 11.500 sq. ft. No drainage studies or onsite detention ponds Same as 1-4 units on a single lot No drainage studies or onsite detention ponds are required if these requirements are met: More than required for 1-4 units on a single lot, but less than a standard subdivision or site plan >11,500 sq. ft. to 1.0 acres Lot drains to street right-of- way (ROW) or storm drain without grading: Just a drainage map depicting direction of water flow No engineering or fee payment Grading is required to drain lot to ROW or storm drain: Compliance with Regional Stormwater Management Program (RSMP) Engineering & RSMP fee, as well as grading inspection >11,500 sq. ft. If the above requirements are not met, compliance with all applicable drainage regulations (Land Development Code & Drainage Criteria Manual) is required Required today for all re- subdivisions 6 Infill Plat Scenario 1: Lot no greater than 11,500 square feet HOME-1 Project (building permit) HOME-2 Project (subdivision with lots lines)  No drainage studies or on- site detention ponds  Same max. footprint as building permit/HOME-1  No difference in drainage requirements from surrounding 1-4 unit housing on single lots 7 Infill Plat Scenario 2: 11.5K sq. ft. to 1-acre lot with natural surface flows to road/drainage system  Drainage map depicting direction of water flow  No stormwater engineering, detention pond, or RSMP payment 8 Infill Plat Scenario 3: 11.5K sq. ft. to 1-acre lot with grading required to direct flows to road/drainage system 9 Infill Plat Scenario 3: 11.5K sq. ft. to 1-acre lot with grading required to direct flows to road/drainage system  Engineering required  RSMP fee  Grading review and inspection 10 Infill Plat Scenario 4: 11.5K sq. ft. to 1-acre lot with surface flows to neighboring properties 11 Infill Plat Scenario 4: 11.5K sq. ft. to 1-acre lot with surface flows to neighboring properties  Engineering required  No RSMP option  Build detention pond Recap of Staff Proposal: Site Plan Lite Example Site Plan Lite Project 8-unit condominium project on 0.49 acres at ~60% IC Summary of “Site Plan Lite” Proposal: Drainage Code Amendments Lot Size Proposed Requirements for Resubdivision Additional Info. No drainage analysis or onsite detention ponds are required if these requirements are met: Stricter requirements than for infill plats due to likelihood of higher impervious cover Just a drainage map depicting direction of water flow No engineering or fee payment </= 0.50 acres Lot drains to street right-of- way (ROW) or storm drain without grading: Grading is required to drain lot to ROW or storm drain: Compliance with Regional Stormwater Management Program (RSMP) >0.50 acres to 1 acres Lot drains to street ROW or storm drain, with or without grading: Compliance with Regional Stormwater Management Program (RSMP) Any If the above requirements are not met, compliance with all applicable drainage regulations (Land Development Code & Drainage Criteria Manual) is required Engineering & RSMP fee, as well as grading inspection Engineering & RSMP fee, as well as grading inspection Required today for all site plans 15 Site Plan Lite Scenario 1: Lot with natural surface flows to road/drainage system Public ROW or Drainage System R u n o f f  Drainage map depicting direction of water flow  No engineering or RSMP payment 16 Site Plan Lite Scenario 2: Lot with grading required to direct flows to road/drainage system Public ROW or Drainage System s r o b h g i e n o t s n a r D i 17 Site Plan Lite Scenario 2: Lot with grading required to direct flows to road/drainage system Public ROW or Drainage System d e d a r g e R f f o n u R d e d a r g e R f f o n u R  Engineering required  RSMP payment  Grading review and inspection 18 Site Plan Lite Scenario 3: Lot with surface flows to neighboring properties – requires onsite detention Public ROW or Drainage System Drains to neighbors 19 Site Plan Lite Scenario 3: Lot with surface flows to neighboring properties – requires onsite detention R u n o f f R e g r a d e d  Engineering required  No RSMP option  Build detention pond Runoff Regraded Detention Pond Drains to detention pond 20 Existing storm drain inlet Recap of Staff Proposal: Additional Elements Additional Elements of Staff Proposal Requirement Proposed Change Impervious Cover Site Plan Review For infill re-subdivisions, use a more accurate calculation that facilitates smaller lots. Classify 5-16 units as a “small project,” which reduces fees and limits review. Storm Drain Connection Reduce requirements for infill development to connect to existing storm drains. Regional Stormwater Management Program (RSMP) Expand requirements for participation in RSMP, which provides an alternative to onsite detention for infill projects that don’t meet proposed exemption criteria. Additional Elements of Staff Proposal (cont’d) Requirement Proposed Change Right-of-Way (ROW) Streamline process for projects unlikely to require ROW dedication and better document basis for determining amount of ROW dedication. Parkland Dedication Streamline process for approving payment of fee in-lieu of parkland dedication. Utilities Improve AW process for obtaining early determination on required upgrades to existing infrastructure. Questions?