NEPONSET WATERSHED TOWN BYLAWS AND REGULATIONS THAT ARE CONSISTENT WITH PROPER STORMWATER MANAGEMENT = Current Bylaw and/or regulation is consistent with MAPC Recommendations = Current Bylaw and/or regulation is not consistent with MAPC Recommendations NA = t Applicable ZONING BYLAW & SITE PLAN REVIEW STANDARDS Canton Dedham Milton Sharon Stoughton Westwood Medfield rwood Randolph* Walpole Dimensional Requirements 1. Allow rain gardens, etc. in setback areas and buffer strips?, if no fence but waivers : Zoning 6.5.3 : Site Plan Guidelines page 22 : Site Plan: Section 113, 11 (B) Drainage: use of natural areas to control runoff preferred 2. Minimize house setback requirements to allow flexibility? NA small lots NA small lots By Special Permit under Section 4330 of Zoning for Flexible Development only 3. Permit reduction in frontage for cul-de-sacs, open space development? NA small lots NA too dense N/A too dense By Special Permit under Section 4330 of Zoning for Flexible Development 6. Limits on tree clearance; at least large trees/forest stands?, but may revise but often but often for large trees SF in R-S=96', OSRD=80' minimal setbacks in Business districts cluster development only N/A but often : 4.2.1 Flex. Res. Dev. Allows for two or more buildings on same lot by ZBA SP in A, GB, CB, HB, LB zones 3.3.3 subdivision rules: due regard to be shown to natural features- no standard : 6.5.6 Zoning: Location and design shall not cause avoidable removal or damage to any tree >12' trunk diameter at 4.5' above grade. in some cases: see Zoning Sections 200-28 and200-29 Front and Side Yard setbacks Does not zone for OSRD but instead uses smaller lots with higher rates of pervious coverage and green space in all districts. : Site Plan Guidelines into and page 23 : Zoning Section 6C, 7 and 8: front a side yard setback exceptions : Zoning Section 10D, OSRD, 8: may reduced for OSRD : Site plan Sectio 113, 10: conserve natural features; an OSRF Design Standards pg.76 Open Space Development 1. Open space/cluster development "by right"? : SP only. by SP only : by ZBA SP and PB Subdivision approval but has Downtown Apt Overlay District and St. George Avenue Smart Growth Overlay District(40R) with 20 units per acre by right Does not zone for OSRD but instead uses smaller lots with higher rates of pervious coverage and green space in all districts. : Zoning Section 10.3 OSRD, 3: Speci Permit by Planning Board 2. Allow LID (bioretention/swales/filter strips) on land held in common? for condos only in CSD drainage/lid mentioned : Zoning: 6.5.3: systems shall utilize subsurface infiltration as the primary technique to treat runoff : Site Plan Guidelines, pg. 22 yes Parking Requirements 1. Allow permeable paving for parking stalls & spillover parking areas? Spec Permit t mentioned by PB SP t referenced but reduced parking allowed in some cases 1
2. Don't require > 3 off-st parking spaces per 1000 SF of floor in professional buildings? (4 ) N/A : no zoning for professional offices : Zoning 3111: four spaces per/1,000 : Two for each person working in the office. Minimum three spaces per office : Zoning 6.1.3: requires 1 space per 325 square feet on average for office : Zoning 200-19 (B): 325 square feet on average for Commercial/Office :1 space per 200 1st flr + 1 space/400 upper floors = 1 space/300' avg 3. Don't require > 4.5 off-st parking spaces per 1000 SF floor in shopping centers? Almost (requires 5) N/A : no zoning for shopping centers NA: Zoning Section 2323: retail over 60,000 SF not allowed or >150 parking spaces 4. Don't require > 2 off-st parking spaces per single family home? : Zoning 3111: 1 space/residential dwelling units 1 per each 300 square feet of gross floor space : One per each 120 sq. ft. of floor space open to estate establishment the public plus one for each two employees Partial: two per unit in all but B District (1.5 spaces/unit0 : Zoning 6.1.3: requires 1 space per 325 square feet on average for retail partial: 3 spaces/du >1 BR but all others 1 space per DU : Zoning 200-19 (B): 325 square feet on average for Commercial/Office : Zoning 200-19 A: 2 spaces per single family home :1 space per 200 1st flr + 1 space/400 upper floors = 1 space/300' avg : 2 spaces per DU 5. Establish parking maximums?, site specific but often 6. Allow reduction of parking requirements if shared parking? : Zoning 3111 (F): may be reduced by up to 25% 7. Allow reduced parking for homes/businesses near transit stops? : Zoning 3111 (E): parking may be reduced in Business District A if near transit 8. Allow 9 ft or less stall width for std parking space? : Zoning 3113: 9 feet 9. Allow 18 ft or less stall length for std parking space? : Zoning 3113: 20 feet 10. Recommend or require smaller stalls for compact cars, up to 30%? Almost: 25% : Zoning 3111: up to 25% in Business A District and in MUOD : shared parking not in zoning 8.5.4 Downtown District: ZBA may allow for expansion or change of use w/o meeting parking requirements by Special Permit : for residential mixed us : Zoning 6.1.12: by PB SP : Zoning 6.1.12: by PB SP : 9 ' 6" : Zoning 6.1.10 : Zoning 200-19 B: 9 feet : 18 ' : Zoning 6.1.10 : Zoning 200-19 B: 18 feet (recommend) 11. Require vegetated islands with bio-retention areas in parking lots? NA but may revise but may revise : Zoning 6.4.4: min. 2% of parking area over 30 spaces must be planted Partial: Zoning 200-94(B)(2)(f)(2): alternative parking lot designs incorporating natural resources are encouraged- :zoning Section 8.5 : zoning Section 8.9: no on-site parking in Central Business District and East Walpole Parking Relief Area : Table 8.8.A.1: 9 feet : Table 8.8.A.1: 17.5 feet : 10 % landscape open space for greater than 6 spac Common Driveways 1. Permit for up to 4 houses, including OSHD lots not meeting standard requirements? NA : Zoning 4370(2)(e): allows for max. of 2 single family units in CSD only allowed for up to 3? Ask Tom but may revise : zoning 10E: lots only 2
Canton Dedham Milton Sharon Stoughton Westwood Medfield rwood Randolph Walpole ZONING BYLAW & SITE PLAN REVIEW STANDARDS (continued) Site Plan Requirements 1. Rain gardens, swales, etc. to meet site landscaping/open space requirements? NA but may revise LID not referenced in site plan or subdivision regs; would meet Usable Open Space Requirement 2.1.82 t referenced : Randolph Site Plan Guidelines 3. Permit pervious driveways and/or "two-track" design for residential? t mentioned in zoning : could be done under 6.5.3 for Site Plan 4. Allow roof runoff to lawns? : could be done under 6.5.3 for Site Plan 5.Stormwater BMP's to meet latest edition of MA Stormwater Handbook? : Zoning 4534 references MA Stormwater Management Policy of 1996/1997 and General SW Bylaw Ask Tom but may revise : could be done under 6.5.3 for Site Plan : Site Plan Guidelines pg. 11 : Site Plan Guidelines pg. 22 Zoning pg. 103:Mu meet MA Stormwat Policy standard 6. Require stormwater management & erosion control plans meeting MS4 standards? Stormwater Discharges Generated by Construction Activity Bylaw: 1 acre or greater: BMP standard not referenced - Rational quantity method used; no water quality standard : Zoning 6.5.3 standards : MS4 standards not referenced Zoning pg. 103:Mu meet MA Stormwat Policy standard 3
SUBDIVISION RULES/REGS; ROADWAY DESIGN STANDARDS Canton Dedham Milton Sharon Stoughton Westwood Medfield rwood Randolph Walpole Street Location 1. St. layout considerations should include reducing street lengths and minimizing pavement. ID need to reduce cut & fill, don't run St's on steep hillsides, route St's on ridge lines, protect natural features? NA, limits on fill t mentioned; 4.2.1 sub regs. calls for EIS for impacts on natural vegetation and contours : see Subdivision Section 5 Protection of Natural Features te: Randolph subdivision regs. seem dated compared to site plan guidelines. Being largely built out the SR may be little used with most development under site plan review? Street grades: Subdivision 3.6.2: not to exceed 7% on primary roads and 8% on secondary roads. Cut and fill, ridges, protection of natural features: not referenced. reference mad to reducing street Length.etc but Section IV-10 (b) as for due regard for natural features. Street Cross Sections 1. Permit min. 1-22 ft paved widths on low traffic residential streets? Fire Dept objects, may revise may revise to 24' : 27 ' paved width for Residential Streets : Subdivision Plate 2 : 10 ' travel lanes with 8' parking lane : Subdivision 3.7.13: primary roads must be 50' including 11' for sidewalks; secondary roads 40' including 11' for sidewalks. : Subdivision Section V-6 Roadwa requires 26 foot mi paved width for loc streets? for private roads DPW objects but may revise Subdivision 5.8: Calls for curbing both sides but waiver possible Subdivision 3.8.9: curbing both sides SSwales not referenced; Subdivision V-7 2. Permit roadside swales and don't require conventional curbs both sides of street? de-sac outside circumferences only 3.Criteria for swales with adequate stormwater treatment/conveyance? 4. Permit utilities under or next to paved road to allow roadside swales? under swale NA but may revise Subdivision Plate 2: Utilities under or next to paved road but no mention of swales unless by waiver : not referenc ed 5. Allow permeable paving for shoulders/parking lanes in residential areas? NA NA t if town to but may revise unless by waiver : not referenced own rd 6. Allow permeable paving on sidewalks? Allowed for private developments NA unless by waiver : Subdivision Section V-8 7. Permit sidewalks on one side of street only in low density residential neighborhoods? but may waive but may revise t addressed : Subdivision 5.9: sidewalks on both sides unless by waiver : Subdivision V- (b): Type B subdivisions 8. Flexibility with sidewalks, e.g. put next to common space instead of roads? NA t determined t addressed By waiver? t referenced : not referenced 9. Sidewalks designed so runoff disconnected from stormwater system? t stated but encouraged t referenced : not referenced Site Work 1. Encourage minimal ROW clearing for roads, utilities, drainage, sidewalks? NA 50' but may revise : see Subdivision Section 5 Protection of Natural Features 2. Require reestablishment of soil permeability compacted by construction work? ; rely on economic incentives, but promote it : not referenced 4
SUBDIVISION RULES/REGS; ROADWAY DESIGN STANDARDS (cont.) Canton Dedham Milton Sharon Stoughton Westwood Medfield rwood Randolph Walpole Dead Ends 1. Minimize radii for cul-de-sacs? (35 ft optimal if adequate for emergencies) Fire Dept objects Section 4.2.4.3: turnarounds of 40 feet for minor streets : Fire Dept objects : Subdivision 5.6.2: Subdivision 3.7.5: DE Streets no longer than 600' allowed 2. Allow landscaped islands and bioretention cells in cul-de-sacs? : but may revise t addressed : Subdivision 5.6.2: 3. Permit one-way loop streets to eliminate turnarounds? but waivers : Subdivision 5.6.2: 4. Permit "hammerhead" turnarounds instead of cul-de-sacs? Fire Dept objects : Subdivision 5.6.2: t addressed t addressed Subdivision 3.7.5: turnarounds OK but must accommodate 30' x 8' vehicle; circular turn around must be at least 60' min. radius : Subdivision IV- (c): 104 foot outside diameter cul-de-sac : not referenced N BOARD OF HEALTH BYLAW AND REGULATIONS Canton Dedham Milton Sharon Stoughton Westwood Medfield rwood Randolph Walpole 1. stormwater systems setbacks > for Title 5 or wetland regulations? Town Bylaws: Section 18: Title 5- no reference to SW setbacks NA: >95% sewered Does not require under BOH regs. NA t addressed in SW regulations NA t addressed; follows state Title 5 2. Local Title 5 rules shouldn t require oversized or "double capacity systems Town Bylaws: Section 18: Title 5- no reference to capacity 3. Do not require reserve septic fields cleared at time of development? Town Bylaws: Section 18: Title 5- no reference to reserves NA: >95% sewered NA - not referenced in BOH regs. NA: >95% sewered Does not require under BOH regs. NA Follows state Title V NA t addressed; follows state Title 5 NA Follows state Title V NA t addressed; follows state Title 5 WETLAND BYLAW AND REGULATIONS Canton Dedham Milton Sharon Stoughton Westwood Medfield rwood Randolph Walpole 1. Permit LID (eg, rain gardens) in BZ unless violates wetlands rules? Eyes 2. Opportunities for staff and CC members to go to LID workshops? If $ available If $ available If $ available If $ If $ available If $ available If $ available If $ available If $ available If $ available DPW/BUILDING INSPECTOR 1. Ensure Sufficient funding for stormwater management 2. Mechanisms to enforce maintenance agreements, including fines? commercial when new MS4 GP Town Bylaw 767-3: not addressed 767-3 (2): leaching areas must increase by 50% FOR ALL NE construction of onsite septic systems. t Disturbance Permit : Town bylaw 499-27 Land 3. Local zoning shouldn't prohibit any LID (eg, permeable pavement, NA NA t referenced narrow driveways, green roofs, etc.) 4. Better municipal plumbing code (note: MA plumbing code is by state) NA NA NA NA NA NA NA NA NA NA 5. Opportunities for staff to go to LID workshops? If $ available If $ available If $ available If $ If $ available If $ available If $ available If $ available If $ available 6. Implement LID demonstrations (eg, rain gardens) on public property? $ $ at HS $ : LEED Neighborhood Development at Westwood Station 5
6 * Zoning Table of Dimensional Requirements mandates LID friendly smaller Lot Areas, (A) Building Lot Coverage, (B) Impervious Lot Coverage, Green Area Open Space, (C) Maximum Coverage (A + B)