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HomeMy Public PortalAboutPlanning Board Packet 09/13/23f\\Q�C \1 2;'Q 4=03 \////// ig 180'3 Planning Board Amanda Bebrin Chair Alexander Wentworth Vice Chair Robert Michaels Clerk Charlotte Degen Madalyn Hillis - Dineen Antone Freitas Elizabeth Taylor Town Planner Jonathon Idman Senior Department Assistant Lynn St. Cyr Town of Brewster Planning Board 2198 Main St., Brewster, MA 02631 brewplan@brewster-ma.gov (508) 896-3701 x1133 PLANNING BOARD MEETING AGENDA 2198 Main Street September 13, 2023 at 6:30 PM This meeting will be conducted in person at the time and location identified above. This means that at least a quorum of the members of the public body will attend the meeting in person and members of the public are welcome to attend in person as well. As a courtesy only, access to the meeting is also being provided via remote means in accordance with applicable law. Please note that while an option for remote attendance and/or participation is being provided as a courtesy to the public, the meeting/hearing will not be suspended or terminated if technological problems interrupt the virtual broadcast or affect remote attendance or participation, unless otherwise required by law. Members of the public with particular interest in any specific item on this agenda, which includes an applicant and its representatives, should make plans for in -person vs. virtual attendance accordingly. Members of the public who wish to access the meeting may do so in the following manner: Phone: Call (312) 626 6799 or (301) 715-8592. Webinar ID: 841 0778 1002. Passcode: 612505. To request to speak: Press *9 and wait to be recognized. Zoom Webinar: https: / / us02web.zoom.us / j/84107781002?pwd=VTVSV1ExaUNCL253NmNZV21Gdmo4dz09 Passcode: 612505. To request to speak: Tap Zoom "Raise Hand", then wait to be recognized. When required by law or allowed by the Chair, persons wishing to provide public comment or otherwise participate in the meeting, may do so by accessing the meeting remotely, as noted above. Additionally, the meeting will be broadcast live, in real time, via Live broadcast (Brewster Government TV Channel 18), Livestream (livestream.brewster-ma. gov), or Video recording (tv.brewster-ma.:ovJ, The Planning Board packet can be found on the Calendar on the Town of Brewster website (www.brewster-ma.cov). Please note that the Planning Board may take official action, including votes, on any item on this agenda. 1. Call to Order. 2. Declaration of a Quorum. 3. Meeting Participation Statement. 4. Recording Statement. As required by the Open Meeting Law we are informing you that the Town will be video and audio taping as well as broadcasting this public meeting. In addition, if anyone else intends to either video or audio tape this meeting they are required to inform the Chair. 5. Public Announcements and Comment. Members of the public may address the Planning Board on matters not on the meeting's agenda for a maximum of 3-5 minutes at the Chair's discretion. The Planning Board will not reply to statements made or answer questions raised during public comment but may add items presented to a future agenda. 6. Major Stormwater Management Permit, Case No. 2023-38: Applicant/Owner: James Bursma through his representative J.M. O'Reilly & Associates, Inc. has submitted a major stormwater permit application for property located at Crocker Lane and shown on Tax Map 69, Parcel 10, pursuant to Brewster Town Code Chapter 272 and its accompanying Regulations. The Planning Board will consider and potentially vote whether to approve the major stormwater permit, as well as any waivers from said Regulations deemed necessary and applicable. 7. Approval Not Required, Case No. 2023-08: Applicant/Owner: George E. Martin and Lorraine M. Spenle through their representative J.M. O'Reilly & Associates, Inc. seeks endorsement of an Approval Not Required Plan for property located at 169 and 173 Paines Creek Road and shown on Tax Map 36, Parcel 15 within the Residential Medium Density (R -M) Zoning District. The plan is pursuant to MGL c. 41 §81L and §81P and §290-4 of the Brewster Subdivision Rules and Regulations. The Planning Board will consider and potentially vote whether to endorse the Approval Not Required Plan. ////, /////////I11111111111111N\ \ f f Planning Board Amanda Bebrin Chair Alexander Wentworth Vice Chair Robert Michaels Clerk Charlotte Degen Madalyn Hillis - Dineen Antone Freitas Elizabeth Taylor Town Planner Jonathon Idman Senior Department Assistant Lynn St. Cyr 8. Public Hearing on Proposed Zoning Amendments Related to the Accessory Dwelling Unit Sections of Brewster Zoning Bylaw Chapter 179: The Planning Board will consider proposed amendments to the Brewster Zoning Bylaw related to accessory dwelling units and associated matters, specifically involving the following sections of said Bylaw, and to accept public comment thereon: Section 179-2 Definitions; Section 179-42.2 Accessory single-family dwelling units (ADUs); Chapter 179, Table 1, Use Regulations; and Chapter 179, Table 2, Area Regulations. Copies of the proposed amendments are available in the Town Clerk's Office, the Planning Department, and on the Planning Department's webpage: https:i (www.brewster- ma.gov/planning-board-and-planning-department. Written comments may also be submitted to the Planning Board in advance of the hearing at the address provided above or by email to brewplan@brewster-ma.gov. At the hearing, the Planning Board may vote to make recommendations to Town Meeting on said proposed amendments, either as currently drafted or as might be further amended by the Planning Board during the hearing. 9. Approval of Meeting Minutes: August 9, 2023 and August 23, 2023. 10. Committee Reports. 11. For Your Information. 12. Matters Not Reasonably Anticipated by the Chair. 13. Next Meetings: September 27, 2023 and October 11, 2023. 14. Adjournment. Date Posted: 09/01/23 Date Revised: Received by Town Clerk: MAJOR STORMWATER MANAGEMENT PERMIT, CASE NO. 2023-38 APPLICANT: JAMES BURSMA PROPERTY: CROCKER LANE 1 Town of Brewster 2198 Main Street Brewster, MA 02631-1898 Phone: (508) 896-3701 x. 1133 STAFF REPORT TO: Planning Board FROM: Jon Idman, Town Planner RE: Major Stormwater Permit SWMP23-38 Crocker Lane (Map 69, Parcel 10) Owner/ Applicant: Bursma c/o John M. O’Reilly, PE, J.M. O’Reilly & Associates DATE: August 21, 2023 ______________________________________________________________________________ Recommendation The stormwater permit application meets the applicable performance standards and submission requirements set out in the town’s Stormwater Management Regulations for issuance and approval of a Major Stormwater Permit. Approval should be granted subject to the continuing obligations set out in said Regulations, including Sections 5.7, 5.8, 5.9 (Certificates of Compliance), 6.1B (Construction practices), Section 7.2 (Inspections), 8.3 (Recording of stormwater permit and O&M plan) and 8.5 therein. The Planning Board may want to request more details about any proposed bioswale plantings, and integrate details into the O&M Plan as necessary and applicable. The Planning Board could also clarify expressly as a condition of approval that gutters and downspouts be regularly cleaned and maintained, either as a stand-alone condition or as a condition requiring a proposed revision to the O&M Plan related to the same. Major Stormwater Management Permit The underlying project is the development of a currently undeveloped/ wooded lot for single family residential use: a new home, paved driveway, and patio. The project triggers a Major Stormwater Permit according to Chapter 272 of the Brewster Code (Stormwater Management Bylaw) and Section 4 of the Bylaw’s supporting regulations, as the project involves net new impervious surface of 2500 sq ft or greater. Major Stormwater Permits are subject to review at a public meeting, including for any waivers requested. No waivers have been requested or identified as necessary. No portion of the project is located in a special flood hazard area or wetland resource areas. The property is not located in a Zone II or the DCPC. Because the project is not subject to wetlands jurisdiction, the Planning Board is the stormwater permitting authority. The Applicant has provided the required application materials for a Major Stormwater Permit as set out in Appendix B of the Stormwater Management Regulations, including a stamped site plan (dated 8/4/23) and Stormwater Management Report (dated 8/4/23), including HydroCad analysis of pre- and post- development conditions (dated 8/14/23). The Applicant has provided construction-period BMPs consistent with the performance standards for Major Stormwater Permits set out in Section 6.1B of the Stormwater Management Regulations. The site plan contains the specific details of the proposed erosion and sedimentation controls. Office of: Planning Board Planning Dept. 2 The post-construction stormwater management system is consistent with the Major Stormwater Permit performance standards for new construction set out in Section 6.2B of the Stormwater Management Regulations, addressing BMPs and management for both stormwater quantity and quality:  The system meets the applicable standards in the Massachusetts Stormwater Handbook for new development.  The system includes three bioswales with underdrains leading to subsurface leaching facilities. Roof run-off will be conveyed by gutters and downspouts and piped underground to the rear subsurface infiltration facility.  NOAA Plus precipitation values were used in the HydroCad analysis.  The stormwater system will not increase off-site flooding and does not increase peak run-off rates over existing conditions including for the 100 yr. storm.  The system will recharge all run-off from the development on-site, preserving existing recharge volume/ capacity on-site required for development of the project.  The Applicant considered Low Impact Development-type (LID) stormwater design elements and incorporated them into the system design. The system includes three bioswales. Also, consistent with LID, the proposed development avoids one large specimen oak tree, which will be retained.  In addition to the MA handbook stormwater standards, the system meets the TSS and Total Phosphorus treatment requirements (TSS) set out in the Brewster Regulations, through pretreatment and the water quality volume/ holding capacity of the infiltration facilities. There is also associated Nitrogen treatment assumed with system performance.  The system treats the ‘first flush’ (first inch) of run-off.  The Applicant has provided a corresponding Operations and Maintenance Plan, which adequately addresses the long-term maintenance of the post-construction BMPs.  The Applicant’s soil tests on the property, and NRCS mapping, have revealed well-draining soils.  Test pits suggest that there is significant separation between stormwater infiltration facilities and the groundwater table. Town of Brewster Code Chapter 272 Stormwater Management Permit Application Form 1. Project Location: LOT 15, CROCKER LANE, BREWSTER, MA FOR TOWN OFFICIAL USE ONLY TOWN CLERK RECEIVED: SWM PERMIT NUMBER ASSIGNED; g2llli'1P Street Address MAP 69, PARCEL 10 CERTIFICATE # 233493 Assessors Map and Parcel(s) 2. Applicant: JAMES M. BURSMA Deed Reference Name P.O. BOX 952, BREWSTER, MA 02631 Legal Mailing Address 617-909-1157 james.bursma@gmail.com Phone Number Email Address 3. Property Owner (if different than Applicant): SAME Name Legal Mailing Address Phone Number Email Address 4. Professional Representative: John O'Reilly, P.E., P.L.S. J.M. O'REILLY & ASSOCAITES, INC. Name P.O. BOX 1773, BREWSTER, MA 02631 Legal Mailing Address 508-896-6601 joreilly@jmoreillyassoc.com Phone Number Email Address Brewster Stormwater Management Permit Application Form Approved 2/23/ 2022 Rev. 06/22/2022 Page 1 of 2 5. Type of Application (Check as applicable): Minor Stormwater Permit- Any combination or series of construction or land disturbance activities that, over a two-year period, will result in a net increase in impervious area of 500 sq.ft. to 2,500 sq.ft. and/or will result in land disturbances of 10,000 sq.ft. to 20,000 sq.ft. Major Stormwater Permit- Any alteration, disturbance, development, or redevelopment that does not meet the eligibility criteria for a Minor Stormwater Permit. SWM Permit Amendment - List existing Stormwater Management permit number/ type Stormwater Management Certificate of Compliance (SMCC) Request - List relevant Stormwater Management permit number 6. Brief Project Description, including any waiver requests: Project proposes to construct a single family dwelling with landscape. Stormwater controls include bio-retention swales and subsurface infiltration systems. Controls are designed for the 100 year storm event. 7. Signatures: James Bursma Applicant Date Same Property Owner (if different than Applicant) Date • 1& a Professiont ative (as applicable) \ Date NOTES: • Please refer to Appendix 8 of the Stormwater Management Regulations for detailed application submittal and supporting material requirements for Minor and Major Stormwater Management Permits, respectively. • The application fee schedule is contained in Appendix C of the Regulations. • Certain activities are exempt from review and permitting (See §272-6 of the Stormwater Management Bylaw). • if the project is located, in whole or part, within an area subject to state or local wetlands protection law, the review and permitting authority is the Brewster Conservation Commission/ Conservation Department. • No permit review shall occur nor shall review periods commence until the application is deemed complete. Brewster Stormwater Management Permit Application Form Approved 2/23/ 2022 Rev. 05/22/2022 Page 2 of 2 STORMWATER MANAGEMENT REPORT AND OPERATIONS & MAINTENANCE MANUAL JAMES BURSMA 258 WILLIS ROAD SUDBURY, MA 01776 AUGUST 4, 2023 PREPARED FOR: JAMES BURSMA LOT 15, CROCKER LANE BREWSTER, MA PREPARED BY: J.M. O'REILLY & ASSOCIATES, INC. 1573 MAIN STREET P.O. BOX 1773 BREWSTER, MA 02631 508-896-6601 TABLE OF CONTENTS 1. Property Description and Information 2. Stormwater Management System Description 3. Massachusetts Stormwater Management Design Standards 4. Owner and Responsible Party 5. Schedule of Inspection and Maintenance of System 6. Long Term Lawn Care & Pollution Prevention Plan 7. Emergency Spill Cleanup Plan 8. APPENDICES APPENDIX A — HydroCAD Modeling Reports APPENDIX B — Watershed Sketch APPENDIX C - TSS Removal Calculation Sheets Page 2 of 11 BURSMA PROJECT Lot 15 Crocker Lane, Brewster, MA STORMWATER MANAGEMENT REPORT August 4, 2023 Property Description: Lot Area: Parcel Improvements: Wetlands: Soils: Groundwater: Zone II: Topography: Site Conditions: 24,393 sfi-/- The proposal is to develop the parcel with a single family dwelling, patio, landscape and driveway. There are no wetland resources within 100 feet of the parcel. The NRCS Soil Survey places the parcel within the Plymouth Soil 4368 and 436C areas as reflected on MA Mapper. Soil testing completed for the sewage system found loamy sands over a layer of clean fine sands. Refer to soil logs on the plan. The USGS Cape Cod Groundwater Map places groundwater at an approximate elevation range of 4. With the parcel's average elevation 45 the groundwater is anticipated to be about 40 feet below grade. The parcel is NOT located within a Zone II Groundwater Recharge mapped area. The topography is gentle with a high point in the middle of the parcel of elevation 46 and then sloping down to Crocker Lane and again to the rear southeast corner. The parcel is vacant. The parcel is well wooded with scrub oak and pine along with a typical coastal shrub community. Stormwater Management System Description: The proposed post -development stormwater management plan consists of two (2) watersheds which include three bio-retention swales and two subsurface infiltration systems. The stormwater systems have been designed to retain and attenuate stormwater runoff from all impervious and landscaped surfaces on the site, including the driveway, landscaped, lawn and building areas. The stormwater controls have been designed to accommodate the 100 -year storm intensity. The front portion of the parcel is the first watershed. Watershed #1(WS#1) is the northern portion of the parcel and includes a portion of the dwelling and front porch, the looped driveway and the lawn/landscape areas. The stormwater controls for the WS#1 include a bio-retention swale and subsurface infiltration system. The roof runoff will be directly piped into the subsurface facility as allowed by the regulations. The lawn/landscaped and driveway (paved) areas are to be graded to pitch towards the bio-retention swale within the looped portion of the driveway. The bio-swale includes a subsurface drain which is then connected to the subsurface infiltration system. The stormwater system is designed to handle the 100 -storm event. The rear portion of the parcel represents the second watershed. Watershed #2 (WS#2) is the southern portion of the parcel. The WS#2 includes the remaining dwelling area, a large patio to the rear of the dwelling, the remaining portion of the paved driveway and the lawn/landscaped areas. The roof runoff will be directly piped into the subsurface facility as allowed by the regulations. The WS#2 is further broken up into two sub -watersheds. The rear patio and the lawn/landscaped areas to the rear of the parcel is controlled by Bio-Swale #2. The driveway and landscape areas, west of the dwelling are controlled by Bio- Swale #3. Both bio-swales includes a subsurface drain which is then connected to the subsurface infiltration system. The stormwater facility is designed for the 100 year storm event. Page 3 of 11 BURSMA PROJECT Lot 15 Crocker Lane, Brewster, MA STORMWATER MANAGEMENT REPORT August 4, 2023 As shown in the HydroCAD Modeling report, both stormwater systems are designed to collect and retain all runoff from their contributory areas for the 100 year storm event. Accordingly, the site's overall peak discharge rate is reduced relative to the Pre -Development discharge rate for the 2, 10, 25 and 100 year storm events. The table below provides a comparison of the site -wide Pre- to Post -Development peak discharge rate for each storm event. Storm Event Pre -Development Peak Discharge Rate, cubic feet per second (ft3/sec) Post -Development Peak Discharge Rate, cubic feet per second (ft3/sec) 2 year 0.00 0 10 year 0.00 0 25 year 0.02 0 100 year 0.17 0 For HydroCA0 modeling analysis of the stormwater systems, the following methods and assumptions were used: • Simple Dynamic • Rawls Rate of 8.27 in/hr for sands within the subsoil layers for subsurface leaching galleys. • Rawls Rate of 2.41 in/hr for the loamy sands in the upper soil layers for dry water quality swales. • Volume capacity of dry water quality swales excluded from peak discharge and recharge calculations. • 1.0' freeboard provided for all swales above catch basin rim elevation. • Exfiltration has been assumed to occur along wetted surface area of bottom and walls/slopes. Stormwater Management System Specifications by Contributory Area: Watershed #1: • Runoff from paved and landscaped areas on the northerly portion of the lot are directed via grading and sloped driveway into a bio-swale. The bio-swale's underdrain will be connected to a subsurface infiltration system. • Landscaped and natural areas within the L.O.W. Line will flow towards the driveway and grassed swale. o NOTE: Lawn drains within this catchment area can be plumbed into the 16' x 10' x 4' Leach Galley, using 6" dia. HDPE piping, pitched at 1% slope minimum. • Overflow from the basin enters the subsurface leaching facility consisting of. Leaching facility has been sized to retain 100 year storm runoff. Watershed #2: Page 4 of 11 BURSMA PROJECT Lot 15 Crocker Lane, Brewster, MA STORMWATER MANAGEMENT REPORT August 4, 2023 • The western portion of the watershed will control the runoff from paved driveway and landscaped areas through grading and sloped driveway into a bio-swale. The bio-swale's underdrain will be connected to a subsurface infiltration system. • The remaining portion of the watershed will control the runoff from patio area and landscaped areas through grading and sloped driveway into a bio-swale. The bio-swale's underdrain will be connected to a subsurface infiltration system. • The remaining roofed areas will be directly piped into the subsurface infiltration system. • Landscaped and natural areas within the L.O.W. Line will flow towards the driveway and grassed swale. o NOTE: Lawn drains within this catchment area can be plumbed into the 18' x 10' x 6' Leach Galley, using 6" dia. HDPE piping, pitched at 1% slope minimum. • Overflow from the basin enters the subsurface leaching facility consisting of. Leaching facility has been sized to retain 100 -year storm runoff. Erosion Control Plan - Temporary Siltation Barrier & Silt Socks: Prior to start of construction: • Contractor shall coordinate the driveway access curb cut with the Brewster D.P.W. Department, as applicable. • The any down gradient existing catch basins, within 100 feet of the curb -cuts, shall be protected during construction. Each catch basin grate shall be fitted with a silt sock so mitigate soil from entering the drainage system. • The erosion controls shall include a row of staked 9 -inch straw wattles surrounding the down gradient areas to be disturbed. Erosion controls shall be installed around all areas of disturbance. Refer to Plan Notes for location of the straw wattles. • Once the bio-retention swales are constructed, a row of staked straw wattles are to be installed around the top of the swale slope to prevent silt and debris from clogging and/or damaging the dry water quality swales and subsurface leaching facility. • The erosion controls shall be monitored and corrected during the entire construction phase and until the site has been stabilized with ground cover and the proposed landscape. • Contractor shall be required to provide extra siltation controls in case a repair is needed to the straw wattles and/or catch basin filter fabric. Operational and maintenance plan is included herewith to address the long-term maintenance of the stormwater systems. Page 5 of 11 BURSMA PROJECT Lot 15 Crocker Lane, Brewster, MA STORMWATER MANAGEMENT REPORT August 4, 2023 Massachusetts Stormwater Management Design Standards: The following is a description of how the proposed project meets the Massachusetts Stormwater Handbook design standards. Standard 1: No new untreated discharges: This standard is met since there are no new untreated stormwater discharges proposed. See Standards 4- 6 calculations. Standard 2: Maintain Pre -development peak discharge rate: This standard has been met. All stormwater management systems are sized such that the post development peak discharge rate for the development site does not exceed the pre -development discharge rate for the 2 year -24 hour; 10 year -24 hour; 25 year -24 hour; and 100 year -24 hour storm events. As shown in the HydroCAD Modeling report, both of the stormwater systems are designed to collect and retain all runoff from their contributory areas for the 100 year storm event. Further, the site's overall peak discharge rate is reduced relative to the Pre -Development discharge rate for the 2, 10, 25 and 100 year storm events. The Post -Development 100 -year Storm Peak Discharge Rate relative to Pre -Development conditions has decreased from 0.17 CFS to 0 CFS. Standard 3: Groundwater Recharge: This standard is met. The proposed stormwater management systems are sized so that the total recharge volume provided exceeds the minimum groundwater recharge volume specified in the handbook and the proposed stormwater recharge galleys will drawdown within 72 hours of a storm event. In accordance with the MA Stormwater Manual, the required recharge volume factor (F) required across the impervious area (A) is 0.6 inches per hour for hydraulic soil group B soils. Fine Sand (Rawls Rate: 8.27 inches per hour) has been used in the sizing of the stormwater recharge galleys. Refer to the HydroCAD Stormwater Modeling Report in Appendix. The required recharge volume is calculated based on the total pavement and roof areas on site. Roof — Front Portion • Required Recharge Volume fly = F x A = (0.6 in)(1 ft/12 in)(721 sf) = 36 cf (Roof) • Recharge Storage Provided (Subsurface leaching facilities) = 640 cf [EACH] > 36 cf Roof— Rear Portion • Required Recharge Volume Rv = F x A = (0.6 in)(1 ft/12 in)(705 + 1141 sf) = 93 cf (Roof) • Recharge Storage Provided (Subsurface leaching facilities) = 1080 cf [EACH] > 93 cf Driveway — Front Portion • Required Recharge Volume Rv = F x A = (0.6 in)(1 ft/12 in)(1,853 sf) = 93 cf (Driveway)) • Recharge Storage Provided (Swale) = 393 cf > 93 cf Driveway — Rear Portion Page 6 of 11 BURSMA PROJECT Lot 15 Crocker Lane, Brewster, MA STORMWATER MANAGEMENT REPORT August 4, 2023 • Required Recharge Volume Rv = F x A = (0.6 in)(1 ft/12 in)(1,608 sf) = 81 cf (Driveway)) • Recharge Storage Provided (Swale) = 549 cf > 81 cf • The drawdown for the subsurface leaching facilities for the driveway/Landscape and parking system and roof runoff is 12 hours < 72 hour maximum allowance. Standard 4: Water Quality: This standard has been met. The roof runoff stormwater system will remove 94% of the annual load of Total Suspended Solids (TSS) via the swales and subsurface leaching facilities. TSS removal calculation tables for roadway and roof runoff are included in the Appendix. In accordance with the MAStormwater Manual, the required water quality depth (Dwq) across the impervious area (A) is 1.0 inches per hour in areas containing soils with rapid infiltration rate greater than 2.4 in/hr. The required water quality volume is based on the total pavement area on site. • Required Water Quality Volume for the Front Portion: o Vwq = Dwq x A = (1 in)(1 ft/12 in)(1,853 sf) = 154 cf (pavement) o Water Quality Storage Provided (Grassed channel) = 393 cf > 154 cf • Required Water Quality Volume for the West Portion: o Vwq = Dwq x A = (1 in)(1 ft/12 in)(1,608 sf) = 134 cf (pavement) o Water Quality Storage Provided (Grassed channel) = 549 cf > 455 cf Standard 5: Land uses with higher potential pollutant loads: This standard has been met. The proposed use is a residential building. Standard 6: Stormwater discharges within Zone II or Interim Wellhead protection area of a public water supply and stormwater discharges near or to any critical area. This standard has been met. Not Applicable as the site is not in a Zone 2 for a Drinking Water Well. The 1/2 inch Required Water Quality Volume for discharges within a Groundwater Protection area has been met, see Standard 4 calculations. Standard 7: Redevelopment: This standard is not applicable given the new development. Standard 8: Construction Erosion Control Plan: The project is subject to the proposed erosion control plan as outlined on the plan. Straw wattles and erosion control blankets shall be implemented as required to mitigate erosion of soil. Standard 9: Long Term Operation and Maintenance Plan: A long-term O&M plan has been submitted with this report, refer to Appendix. The property owners will operate and maintain the stormwater systems. Standard 10: Illicit Discharges: This standard is met since there are no illicit discharges at this site and no illicit discharges proposed. Page 7 of 11 BURSMA PROJECT Lot 15 Crocker Lane, Brewster, MA STORMWATER MANAGEMENT REPORT August 4, 2023 Owner and Responsible Party The owner and responsible party for Stormwater Pollution Control at Lot 15 —0 Crocker Lane, Brewster, MA —James Bursma Owner & Operator: JAMES BURSMA 258 WILLIS ROAD SUDBURY, MA 01776 Page 8 of 11 BURSMA PROJECT Lot 15 Crocker Lane, Brewster, MA STORMWATER MANAGEMENT REPORT August 4, 2023 Schedule of Inspection and Maintenance of Stormwater Management Systems 1. All stormwater systems require regular attention in order to ensure the effectiveness of the systems. It is recommended that the drainage systems be inspected annually by a stormwater operation and maintenance professional in order to ensure that the system is properly maintained. Any deterioration threatening the structural integrity of the system shall immediately be repaired. 2. Paved areas shall be swept when necessary to remove debris. Good housekeeping measures should be implemented throughout the site in order to keep paved areas, gutters, downspouts, drain lines and swales clean of debris. 3. The subsurface leaching facilities shall be inspected at least twice a year. Any debris that may clog the system must be removed. 4. The swale shall be inspected and mowed as needed to prevent excessive growth under control. inspect the grass side slopes and bottom for signs of erosion and formation of gullies. Remove accumulated trash, debris and silt as needed and at time of inspection. Estimate of annual operation and maintenance budget for common areas = $ 1,500.00 Page 9 of 11 BURSMA PROJECT Lot 15 Crocker Lane, Brewster, MA STORMWATER MANAGEMENT REPORT August 4, 2023 Long Term Lawn Care & Pollution Prevention Plan Description of Pollutant Sources: ■ Light vehicle traffic -- residential development ■ Lawn care products Source Control Best Management Practices E There shall be no storage of items or materials which will be subject to the weather. ■ Good housekeeping measures shall be implemented throughout the site in order to keep the driveways clean of debris. ■ Regularly sweep paved areas to remove debris and any other potential stormwater pollutants. ■ The use of winter de-icing sand and salt materials shall be minimized to the maximum extent practicable. ■ Winter de-icing sand and salt materials shall be stored indoors. ■ Snow storage shall be on paved surfaces. ■ Immediately clean up any spillage on paved areas and dispose of wastes properly. Emergency Spill Cleanup Plan 1. The owner of the facility shall have a designated person with overall responsibility for spill response cleanup. 2. In the event of a spill the following shall be notified: A. Brewster Fire Department (for a gasoline or hazardous material spill) B. Massachusetts D.E.P. Emergency Response C. Brewster Health Department 3. Cleanup of spills shall begin immediately. Page 10 of li BORSMA PROJECT Lot 15 Crocker Lane, Brewster, MA (508) 896-1708 911 (800) 304-1133 (508) 896-3701 ext. 1120 STORMWATER MANAGEMENT REPORT August 4, 2023 O&M Log Form Condition Inspector Initials Item Inspected Date Time Good Clean -out Needed Repair Needed Repaired Date O&M Log form records to be maintained by property manager for a minimum of three years Page 11 of 11 BURSMA PROJECT Lot 15 Crocker Lane, Brewster, MA STORMWATER MANAGEMENT REPORT August 4, 2023 Pre -Development (8s) VacahtLot 1R Pre -Discharge Subcat Reach Waters Northsid ed #1 - of House Drainage SVyale #1 Building - Froni Link 16' x 10" x 4' Leching Galley Post -Development Waters ed #2 - Soulhsid of House Waters�ed #2 - Westsid of House Drainage Siva #2 - Draage Swate #3 South West 8R Post - Const uction Discharge V Buiiding - Rear 18° 10°x 6' Leaching Galley Routing Diagram for 9381.BURSMA DRAINAGE CALCULATIONS Prepared by J M O'Reilly & Associates Inc, Printed 8/14/2023 HydroCAD®10.20-2g s/n 08678 r 2022 HydroCAD Software Solutions LLC 9381.BURSMA DRAINAGE CALCULATIONS Prepared by J M O'Reilly & Associates Inc HydroCADO 10.20-2q s/n 08678 © 2022 HydroCAD Software Solutions LLC Area Listing (all nodes) Area CN Description (acres) (subcatchmont-numbers) 0.012 98 Parking, HSG A (3) 0.116 98 Paved parking, HSG A (1, 2, 3) 0.067 98 Roofs, HSG A (4, 6) 1.066 32 Woods/grass comb., Good, HSG A (1, 2, 3, 8S) 1.262 42 TOTAL AREA Printed 8/14/2023 Page 2 9381.BURSMA DRAINAGE CALCULATIONS Prepared by J M O'Reilly & Associates Inc HydroCADO 10.20-2q sin 08678 © 2022 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 1.262 HSG A 1, 2, 3, 4, 6, 8S 0.000 HSG B 0.000 HSG C 0.000 HSG D 0.000 Other 1.262 TOTAL AREA Printed 8/14/2023 Page 3 9381.BURSMA DRAINAGE CALCULATIONS Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCAD® 10.20-2q s/n 08678 © 2022 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Covor Numbers 0.012 0.000 0.000 0.000 0.000 0.012 Parking 3 0.116 0.000 0.000 0.000 0.000 0.116 Paved parking 1, 2, 3 0.067 0.000 0.000 0.000 0.000 0.067 Roofs 4, 6 1.066 0.000 0.000 0.000 0.000 1.066 Woods/grass comb., Good 1, 2, 3, 8S 1.262 0.000 0.000 0.000 0.000 1.262 TOTAL AREA 9381.BURSMA DRAINAGE CALCULATIONS Type 11/ 24 -hr 100 -Year Rainfall -8.50" Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCADO 10.20-2g sfn 08678 © 2022 HydroCAD Software Solutions LLC Page 5 Time span=0.00-30.00 hrs, dt=0.01 hrs, 3001 points x 2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Pond 1P: 16' x 10' x 4' Leaching Galley Peak Elev=39.21' Storage=593 cf Inflow=0.51 cfs 0.034 af Discarded=0.07 cfs 0.034 af Primary=0.00 cfs 0.000 al Outflow=0.07 cfs 0.034 af Pond 1SW: Drainage Swale #1 Peak Elev=41.21' Storage=49 cf Inflow=0.43 cfs 0.034 of Discarded=0.04 cfs 0.015 af Primary=0.35 cfs 0.019 af Outflow=0.39 cfs 0.034 of Pond 2P: 18' x 10' x 6' Leaching Galley Peak Elev=41.11' Storage=1,010 el Inflow=0.85 cfs 0.048 of Discarded -0.09 cfs 0.048 af Primary=0.00 cfs 0.000 af Outflow=0.09 cfs 0.048 af Pond 2SW: Drainage Swale #2 - South Peak Elev=43.06' Storage=110 cf Inflow -0.37 cfs 0.029 af Discarded=0.09 cfs 0.024 al Primary=0.21 cfs 0.005 at Outflow=0.30 cfs 0.029 af Pond 3SW: Drainage Swale #3 West Peak Elev=43.71' Storage=100 cf Inflow=0.49 cfs 0.044 of Discarded=0.09 cfs 0.032 af Primary=0.34 cfs 0.012 af Outflow=0.43 cfs 0.044 of 9381.BURSMA DRAINAGE CALCULATIONS Type 11124 -hr 100 -Year Rainfall=8.50" Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCADO 10.20-2g sin 08678 0 2022 HydroCAD Software Solutions LLC Page 6 Summary for Pond 1 P: 16' x 10' x 4' Leaching Galley Inflow Area = 0.204 ac, 31.49% impervious, Inflow Depth = 2.01" for 100 -Year event Inflow = 0.51 cfs @ 12.12 hrs, Volume= 0.034 af Outflow = 0.07 cfs @ 12.72 hrs, Volume= 0.034 at, Atten= 87%, Lag= 36.4 min Discarded = 0.07 cfs @ 12.72 hrs, Volume= 0.034 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routed to Reach 8R : Post - Construction Discharge Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 39.21' @ 12.72 hrs Surf.Area= 160 sf Storage= 593 cf Plug -Flow detention time= 76.3 min calculated for 0.034 af (100% of inflow) Center -of -Mass det. time= 76.3 min ( 873.0 - 796.7 ) Volume Invert Avail.Storage Storage Description #1 35.50' 226 cf 6.00'D x 4.00'H Vertical Cone/Cylinder x 2 Inside #2 #2 35.50' 414 cf 10,00'W x 16.00'L x 4.00'H Prismatoid 640 cf Overall - 226 cf Embedded = 414 cf 640 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 35.50' 8.270 in/hr Exfiltration over Wetted area Phase -In= 0.01' #2 Primary 39.45' 10.0' long (Profile 6) Broad -Crested Rectangular Weir Head (feet) 0.49 0.98 1.48 Coef. (English) 3.12 3.41 3.59 Discarded OutFlow Max=0.07 cfs @ 12.72 hrs HW=39.21' (Free Discharge) t- 1�Exfiltra#ion (Exfi[tration Controls 0.07 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=35.50' TW=0.00' (Dynamic Tailwater) L2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 9381.BURSMA DRAINAGE CALCULATIONS Type 11124 -hr 100-YearRainfall=8.50" Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCAD1 10.20-2g sin 08678 O 2022 HydroCAD Software Solutions LLC Page 7 Pond 1 P: 16' x 10' x 41 Leaching Galley Hydrograph 0.55- 0.5. 0.4- 0.35- 0.25- 0.2- 0.15- 0.1- 0.05- r -I r -r r r r I HHHH p I I I I ri , _ I 111 1 r r r r -r -r -r -r- 1 1 --r-r-r-r-r-r-r-r-r- 1 r I I r -r -r -r -r -r -r -r -r- 1 1 1 I 1 1 1 1 1 I r -r- r - --t, -r-r-r--r- 0 I I I I I 1 I I I I 1 1 1 1 1 1 1 1 Y 1 1 1, 1 1 1 1 . _•- - r "k --r-1- _ r -r - r -I --r- 1 1 I 1 1 1 1 1 1 1 1 1 i F - r - r - r - r - r - r, - r - t- 1 I -r-r - I 1 1 1 I I 1 1 1 I 1 1 1 I 1 1 1 I I I I I I 1 1 1 -F'-1--r-r-I--1-,-r-' -r-1--1--1'-1--t-r-r-r-r-r_r-}. 1 1 1 1 1 1 1 ° OA7 GS I 1 1 1 1 1 1 1 1 1 1 1 1 r- r- r. r- r- r- r- I --r - r- r -- 1. 1- - r -T - r r - I 1 1 , 1 1 I I 1 , 1 I r -r -r- - -. Inflow Area -0.204 ac r -r Peak Elev =39.211 Storage=.593 cf I 1 , 1 1 ,J -r-t-r-r-r-r-r-r-r-r-r-r-r- I I I i l l I I 1 1 I I I 1 - r- r- r- r- r- r - r- r- r- r- r- r- r- t- r- r- r - I 9 1 1 1 11 1 1 1 1 1 1 1 1 1 I I 1 1 I I 1 I I I -}-r r--r-r-r-r-r-r-r-r-r-r-r-r-t- I I 1 1 1 1 I 1 1 1 I 1 1 1 1 1 1 1 1 I 1 I I 1 1 I 1 1 I 1 I 1 1 1 I I1 1 I 1 1 I r- r r r r r- r 1 r' - r- - I 1 1 1 1 I 1 1 1 F r 1 1 I I r 1 -{r-t- r //////l///�fi/./ ////////% //.,%/lll//x//// 01 , /er i, /.7/i.��iii4/0.0" Jlia//lam/ � ./�.���i.. " --1(: l/� '�C/ii/�/ Dods 7 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 1 2 3 4 5 6 7 8 9 10 • Inflow El Outllaw ® Discarded p Primary 9381.BURSMA DRAINAGE CALCULATIONS Type 11124 -hr 100 -Year Rainfall=8.50" Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCAD® 10.20-2g s/n 08678 © 2022 HydroCAD Software Solutions LLC Page 8 Summary for Pond 1SW: Drainage Swale #1 [441 Hint: Outlet device #2 is below defined storage Inflow Area = 0.182 ac, 23.34% Impervious, Inflow Depth = 2.23" for 100 -Year event Inflow = 0.43 cfs @ 12.10 hrs, Volume= 0.034 af Outflow = 0.39 cfs @ 12.14 hrs, Volume= 0.034 af, Atten= 9%, Lag= 2.2 min Discarded = 0.04 cfs @ 12.14 hrs, Volume= 0.015 af Primary - 0.35 cfs @ 12.14 hrs, Volume= 0.019 of Routed to Pond 1P : 16' x 10' x 4' Leaching Galley Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 41.21' @ 12.14 hrs Surf.Area= 142 sf Storage= 49 cf Plug -Flow detention time= 1.1 min calculated for 0.034 at (100% of inflow) Center -of -Mass det. time= 1.1 min ( 876.1 - 875.0 ) Volume Invert Avail.Storage Storage Description #1 40.00' 393 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Voids lnc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (%) (cubic -feet) (cubic -feet) (sq-ft) 40.00 142 59.0 0.0 0 0 142 40.50 142 56.0 40.0 28 28 182 42.00 142 59.0 20.0 43 71 272 42.50 311 83.0 100.0 111 182 546 43.00 548 108.0 100.0 212 393 929 Device Routing Invert Outlet Devices #1 Discarded 40.00' 8.270 in/hr Exfiltration over Wetted area Phase -In= 0.01' #2 Primary 39.95' 4.0" Round Culvert L- 25.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 39.95' 125.20' S= 0.5900'1' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.09 sf Discarded OutFlow Max -0.04 cfs @ 12.14 hrs HW=41.21' (Free Discharge) t-1=Exfiltration (Exfiltration Controls 0.04 cfs) Primary OutFlow Max=0.35 cfs @ 12.14 hrs HW=41.21' TW=37.15' (Dynamic Tailwater) t-2=Culvert (Inlet Controls 0.35 cfs @ 3.97 fps) 9381.BURSMA DRAINAGE CALCULATIONS Prepared by J M O'Reilly & Associates Inc HydroCAD® 10.20-2q s/n 08678 © 2022 HydroCAD Software Solutions LLC 0.45- 0.4- 0.35- 0 3- N 0.25- 3i O 1L 0.2 0.15 0.1 0.05 - Pond 1SW: Drainage Swale #1 Hydrograph Type 11124 -hr 100 -Year Rainfall=8.50" Printed 8/14/2023 Page 9 r - r -r- r-- I0.49cls1 I 039 cls -rte 0.35 cls r L -r- l 0 Inflow Area^©.182 ac Peak'Elev=41.21' Storage=49 cf I I L L r rI I r r I 1 I I j Y L 1 I v i I I I 1 ti I- I I I I ti 7 4- O i I ///////U/ i///////////////f////f//////////% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) I r r ® Inflow d Oulltow ❑ Discarded ❑ Primary 9361.BURSMA DRAINAGE CALCULATIONS Type !1! 24 -hr 100 -Year Rainfall=8.50" Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCAD®10.20-2g sin 08678 © 2022 HydroCAD Software Solutions LLC Page 10 Summary for Pond 2P: 18' x 10' x 6' Leaching Galley Inflow Area = 0.498 ac, 26.38% Impervious, Inflow Depth = 1.16" for 100 -Year event Inflow = 0.85 cis @ 12.13 hrs, Volume= 0.048 ai Outflow = 0.09 cfs @ 12.66 hrs, Volume= 0.048 af, Atten= 89%, Lag= 32.0 min Discarded = 0.09 cfs @ 12.66 hrs, Volume= 0.048 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routed to Reach 8R : Post - Construction Discharge Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 41.11' @ 12.66 hrs Surf.Area= 180 sf Storage= 1,010 cf Plug -Flow detention time= 98.0 min calculated for 0.048 af (100% of inflow) Center -of -Mass det. time= 98.0 min ( 838.6 - 740.7 ) Volume Invert Avail.Storage Storage Description #1 35.50' 339 cf 6.00'D x 6.00'H Vertical Cone/Cylinder x 2 Inside #2 #2 35.50' 741 cf 10.00'W x 18.00'L x 6.00'H Prismatoid 1,080 cf Overall - 339 cf Embedded - 741 cf 1,080 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 35.50' 8.270 in/hr Exfiltration over Wetted area Phase -In= 0.01' #2 Primary 41.40' 10.0' long (Profile 6) Broad -Crested Rectangular Weir Head (feet) 0.49 0.98 1.48 Coe#. (English) 3.12 3.41 3.59 Discarded OutFlow Max=0.09 cfs @ 12.66 hrs HW=41.11' (Free Discharge) 't--1=Exfiltration (Exfiltration Controls 0.09 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=35.50' TW=0.00' (Dynamic Taiiwater) L2=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 9381.BURSMA DRAINAGE CALCULATIONS Prepared by J M O'Reilly & Associates Inc HydroCAD® 10.20-2g sin 08678 © 2022 HydroCAD Software Solutions LLC 0.95- 0.9 0.85= 0.75' 0.7 0.65 0.6' 0.55 ?. 0.5 0 0.45 u 0.4 0,35 0.3 0.25 0.2 015 Pond 2P: 18' x 10' x 6' Leaching Galley Hydrograph Type 111 24 -hr 100 -Year Rainfall=18.50" Printed 8/14/2023 Page 11 r -.r - 1- . I I. _ r - 1 r - r ._ . _ i I 1 r I 1 I I 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1 I I 4 1 1 1 11 I 1 1 1 I I 11 .. ._ _ _ 1 _ - _ - .. 1 1 - 1 - I I 1 -; -Inflow Area -0:498 ac r -r-r-h _r_}. r -r -F -r -F_1. L_ - - ... .. . -- -- 1 1 1 • ' 1 1 1 1 1 1 1 , : P1 1 1 1 ' Peak IElev=41:11' - •'r—r—r—r—r—r—r`r-—a— —r—r—r Jr —r 1 1-1 —i 1 1 r I i s r r 1 1 1 1 1 I ■/�■— i 1 1 I I 1 I 1 I I 1 I 1 1 1 1 1 Storage 3 11 0 pct L L L 0. L L ,_ L 1.- 1. _L _.1--1-1- - L - IL - L 1.. L ., L 1 L L .. L 1 1 1 1 1 1 1 1 1 I 1 , 1 1 V 1 1 1 1 1 1 1 1 1 ,_ _,. _1_ _-F-F -F-F -F -• h _} _ I r_f_w- _� _ k. _ I. y. _ ���r_ p. _1-_ r _ _ _ _ _ I I I I I I I 1 I 1 1 1 1 1 Y 1 1 1 1 1 1 t 1 1 r -r -r -r -r -r -r -r -r- r-r-a--r-r-r-r-r-r-r-r-r-r-7-r-r--r- J I I I I I I 1 I V 1 I 1 1 1 1 1 1 1 I 1 1 1 1 1 1 1 I 1 1 .. L L. -1--L- 9 1 1 1 1 1 L L L L LL L- 1- 1 1 1 1 1 1 1 1 1 1 R 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0. 0.09 1 1 1 I X X I 1 1 1 1 1 I 1 1 1 I I 1 1 V I 1 LL _ 1 1 1 1 1 L L L I 1 L 1 L L L 1 I 1 1 1 1 1 I I 1 1 I Y Q 1- 1 L L I 4 1 1 1 I 1 1 1 1 1 1 1 1 1 —. r — r — r — fi _ *• — t — r — r — r — r — t — r — 1 — r — r — r — I I I 1 1 1 I 1 1 I I 1 1 1 1 l I r — I 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1• r 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I I I 1 1 1 1 L 1 1 1 1 I 1 L L 1 1 {- - O i �1�� %%!/i% /%/ ,' '�.�% ." .U�r.✓ /./ice - 0. ODD Els // - ���� . 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) L 1- 1- 4 4- 0. r• I 0 ■ Inflow El Outflow ❑ Discarded p Primary 9381.BURSMA DRAINAGE CALCULATIONS Type 11I 24 -hr 100 -Year Rainfall=8.50" Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCADO 10.20-2g sin 08678 © 2022 HydroCAD Software Solutions LLC Page 12 Summary for Pond 2SW: Drainage Swale #2 - South Inflow Area = 0.142 ac, 26.07% impervious, Inflow Depth = 2.45" for 100 -Year event Inflow = 0.37 cfs @ 12.10 hrs, Volume= 0.029 of Outflow = 0.30 cfs @ 12.16 hrs, Volume= 0.029 af, Atten= 20%, Lag= 3.8 min Discarded = 0.09 cfs @ 12.16 hrs, Volume- 0.024 of Primary = 0.21 cfs @ 12.16 hrs, Volume= 0.005 af Routed to Pond 2P : 18' x 10' x 6' Leaching Galley Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 43.06' @ 12.16 hrs Surf.Area= 321 sf Storage= 110 cf Plug -Flow detention time= 4.5 min calculated for 0.029 af (100% of inflow) Center -of -Mass det. time= 4.5 min ( 873.8 - 869.3 ) Volume Invert Avail.Storage Storage Description #1 42.00' 716 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Voids Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (%) (cubic -feet) (cubic -feet) (sq-ft) 42.00 360 102.0 0.0 0 0 360 42.50 360 102.0 40.0 72 72 411 44.00 260 102.0 20.0 93 165 564 44.50 577 114.0 100.0 204 369 777 45.00 820 127.0 100.0 347 716 1,034 Device Routing Invert Outlet Devices #1 Discarded 42.00' 8.270 in/hr Exfiltration over Wetted area Phase -In= 0.01' #2 Primary 42.50' 4.0" Round Culvert L= 25.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 42.50' 127.20' S= 0.6120 '1' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.09 sf Discarded OutFlow Max=0.09 cfs @ 12.16 hrs HW=43.06' (Free Discharge) t _1 Exfiltration (Exfiltration Controls 0.09 cfs) Primary OutFlow Max=0.21 cfs @ 12.16 hrs HW=43.06' TW=38.04' (Dynamic Tailwater) t--2=Culvert (Inlet Controls 0.21 cfs @ 2.39 fps) 9381.BURSMA DRAINAGE CALCULATIONS Type 11124 -hr 100 -Year Rainfall=8.50° Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCAD® 10.20-2g s/n 08678 CI 2022 HydroCAD Software Solutions LLC Pa e 13 Pond 2SW: Drainage Swale #2 - South Hydrograph 0.4 0.38 0.36 0.34- 0.32= 0.3 0.28 0.26 0.24 0.22 0 0.2- u 0.18= 0.16 014 0.12- 0.1- 0.08- 0.06 0.04- 0.02 0 0 1 _ L _L_L _L _ l_ _L -L -L- 1...L_L _L 1 _. L 1 I. _ 1._ L i l l 1 1 1 1 I I I 1 1 1 I 1 1 I 1 1 I li 0_`.{7Lx8 l i I 1 r r r 1 r I 1 I 1 1 1 I 1 --r-r-r-r-r -r-r-r- I 1 1 L 1 I 1 1 1 1 - r-r-r-i -r-F-r F _ ._�InfIOW Area=0.142 ac.. Peak;Elev-43,.06' 1 I I 1 d 1 Storage-1101cf _ L 1 f 1 L, I 11 II „ , 1 1 .. t. .. } _F-}-.. .. - F- 5 - I I I 1 I 1 I Y V I I I I 1 I E Fr r r - r r I r F r r r I 1 T r r - L L I I I I I 1 1 I I I I I I i l l 1 - r- r- r- r- - - r- r t 1 r r Y t "' r- r- T- 1 I I I I I I I I I I I I I 1 1 1 1 1 1 1 1 1 1 I I 1 1 1 1 1 I I I 1 I I I I 1 I I I 1 I r r" r -r r 1 „/'� r r r r r -1-r r r -r -r -r -r -r -r -r -r - I 1 1 1 I 1, k I 1 I p N � !/'" I 1 1 L u I I 1 1 1 o I I I i _ I '/ Y I 1 1 1 1 1 1 1 I 1 I l i 1 I I I _F - F - F -i-- I- - I- - F- F - F - F -} -F - Y - 4-/-- 1- -4 - ii- = }- }--�' 1'-f _ t - I 1 I I I I I I I q 1 1 1 I I 1 -1 -r _r -I -r -r' -r _ _r II" r_T_F_ I_ ..r_ r_r_ r _ r _ r_r_r..i i i I i L i L ri. '10 L ! L I 1 L_ 1 L 1 L 1 r':�'////////✓///.///f_ir`� / //////'if//'O///////// fir 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 16 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 171 Inflow O Outflow ElDiscarded ❑ Primary 9381.BURSMA DRAINAGE CALCULATIONS Type 11124 -hr 100 -Year Rainfall=8.50" Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCAD© 10.20-2q s/n 08678 00 2022 HydroCAD Software Solutions LLC Page 14 Summary for Pond 3SW: Drainage Swale #3 West Inflow Area = 0.310 ac, 15.70% Impervious, Inflow Depth = 1.68" for 100 -Year event Inflow = 0.49 cfs @ 12.11 hrs, Volume= 0.044 af Outflow = 0.43 cfs @ 12.16 hrs, Volume= 0.044 af, Atten= 14%, Lag= 3.0 min Discarded = 0.09 cfs @ 12.16 hrs, Volume= 0.032 af Primary = 0.34 cfs @ 12.16 hrs, Volume= 0.012 at Routed to Pond 2P : 18' x 10' x 6' Leaching Galley Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev.- 43.71' @ 12.16 hrs Surf.Area= 227 sf Storage= 100 cf Plug -Flow detention time= 5.3 min calculated for 0.044 af (100% of inflow) Center -of -Mass det. time= 5.3 min ( 897.3 - 892.0 ) Volume Invert AvaiLStorage Storage Description #1 42.00' 549 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Voids Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (%) (cubic -feet) (cubic -feet) (sq-ft) 42.00 227 136.0 0.0 0 0 227 42.50 227 136.0 40.0 45 45 295 44.00 227 136.0 20.0 68 114 499 44.50 437 145.0 100.0 163 277 712 45.00 662 155.0 100.0 273 549 962 Device Routing Invert Outlet Devices #1 Discarded 42.00' 8.270 in/hr Exfiltration over Wetted area Phase -In= 0.01' #2 Primary 42.50' 4.0" Round Culvert L= 25.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert- 42.50' / 27.20' S= 0.6120 '1' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.09 sf Discarded OutFlow Max=0.09 cfs @ 12.16 hrs HW=43.70' (Free Discharge) ...l Exfiitratinn (Exfiltration Controls 0.09 cfs) Primary OutFlow Max=0.34 cfs @ 12.16 hrs HW=43.70' TW=37.97' (Dynamic Tailwater) t--2=CuIvert (Inlet Controls 0.34 cfs @ 3.87 fps) 9381.BURSMA DRAINAGE CALCULATIONS Type 1!124 -hr 100 -Year Rainfall=8.50" Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCAD® 10.20-2o sin 08678 © 2022 HydroCAD Software Solutions LLC Page 15 Pond 3SW: Drainage Swale #3 West Hydrograph 0.55: 0.45- 0.4- 0.35 8 0.3- 3 c 0.25- 0.2- 0.15- 0.1 0.0 E r r -r-r-r I 1 r i -f i I L L L L_ L_ L- L- L - L I I I L _ L _ L _ L - I r r r I I r -r 1 r r r I I I I I I :1 0.49 cfs 11, fir �1010;0;fe,, dv 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) r r 1 I 1 1 1 1 1 I I 1 I ' 1 1 1 1 1 1 1 1 1 I I I w.-4.-iInflow Area -0.310 ac Peak'Elev=43.71' L i Storage=100 cf I I u I i I _L -r- r" 1 I 1 1 1 1 -r-r-r-r- -r- 1 1 1 1 - --r-r -r I I 4 -r -r -r- I 1 1 1 I I I 1 I ❑ Inflow ❑ Outflow Li Discarded p Primary 9381 .BURSMA DRAINAGE CALCULATIONS Type 11124 -hr 100 -Year Rainfall=8.50" Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCAD® 10.20-2q sin 08678 © 2022 HydroCAD Software Solutions LLC Summary for Reach 8R: Post - Construction Discharge [401 Hint: Not Described (Outflow=Inflow) Inflow Area = 0.702 ac, 27.87% Impervious, Inflow Depth = 0.00" for 100 -Year event Inflow = 0.00 cis @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 9381.BURSMA DRAINAGE CALCULATIONS Type 11124 -hr 100 -Year Rainfall=8.5O' Prepared by J M O'Reilly & Associates Inc Printed 8/14/2023 HydroCADO 10.20-2g sin 08678 © 2022 HydroCAD Software Solutions LLC Summary for Reach 1 R: Pre -Discharge [40] Hint: Not Described (Outflow=inflow) Inflow Area = 0.560 ac, 0.00% Impervious, Inflow Depth = 0.71" for 100 -Year event Inflow = 0.17 cfs @ 12.23 hrs, Volume= 0.033 of Outflow = 0.17 cfs @ 12.23 hrs, Volume= 0.033 af, Atten= 0%, Lag- 0.0 min Routing by Dyn-Star-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 APPROVAL NOT REQUIRED, CASE NO. 2023-08 APPLICANT: GEORGE MARTIN AND LORRAINE SPENLE PROPERTY: 169 AND 173 PAINES CREEK ROAD Date: August 31, 2023 To: Planning Board From: Jon Idman, Town Planner Re: Approval Not Required Plan Endorsement: PB#2023-08 Owner/ Applicant Lorraine Spenle/ George Martin 169 & 173 Paines Creek Road (Map 36 Parcel 15) _____________________________________________________________________________________ Staff Recommendation Vote to endorse the plan entitled “Plan of Land in Brewster, Massachusetts, 169 & 173 Paines Creek Road, Brewster, MA, As Surveyed and Prepared for George E. Martin and Lorraine M. Spenle, Parcel Being Divided is in Book 9510 Page 273,” made by J.M. O’Reilly & Associates, Inc., dated 8/25/23 and stamped 8/23/23 by John M. O’Reilly, PE, PLS, as the plan does not depict a subdivision and thus does not require approval under the subdivision control law. Discussion The owner has submitted a plan of land to the Board for endorsement which shows a division of the land into two building lots. The land is improved with two, detached, preexisting, nonconforming single- family dwellings, which date originally to the 1940s per town assessors records (though one of the dwellings was altered by special permit granted in 2003, ZBA Case No. 03-21) The plan submitted to the Board is styled as an “Approval Not Required” (ANR) plan per MGL Ch. 41 ss. 81L & 81P and Section 290-4 of the Brewster Subdivision Rules and Regulations; the owner/ applicant maintains that no subdivision approval is required for the land division because the plan does not depict a ‘subdivision’ as defined under the subdivision control law, and requests endorsement of the same. In the case at hand, the proposed land division is not a subdivision so-defined and an ANR endorsement is warranted because the division meets an express exception to the definition of subdivision in MGL Ch. 41, Section 81L: each proposed lot contains a building which existed at the time the subdivision control law went into effect in Brewster (approx. 1947). The Board’s endorsement, however, does not itself imply zoning compliance or represent the zoning buildability of the lots; these zoning issues are beyond the scope and authority of the Board under a request for ANR endorsement. That said, the Brewster Zoning Board of Appeals also recently granted the requisite zoning relief authorizing the land division in Case No. 23-15; the variance granted in the case specifically addressed the minimum required lot area of Parcel A, and as directly pertains to the current request, the minimum required frontage of Parcel B, as shown on the plan. Town Of Brewster 2198 Main Street Brewster, Massachusetts 02631-1898 (508) 896-3701 x1150 Office of: Planning Department PROPOSED ZONING AMENDMENTS RELATED TO ACCESSORY DWELLING UNITS Date: September 8, 2023 To: Planning Board From: Jon Idman, Town Planner Re: Proposed ADU Amendments, Brewster Zoning Bylaw Sections 179-2 & 179.42.2; Table 1; Table 2 ____________________________________________________________________________________ At its meeting on August 23, 2023, the Planning Board voted to submit the above-referenced draft amendments presented at the meeting to the Select Board to begin the formal zoning amendment process under MGL Ch. 40A, subject to the following further revisions: 1. Revised Note 13, Table 2. a. Added a sentence to clarify that a lot can’t have both an accessory apartment and an ADU. b. Deleted final phrase re: owner bona fide absences. 2. Added reference to a separate physical entrance requirement for an ADU in Section 179-42.2(A). The draft amendments have now been submitted to the Select Board by staff with the further revisions referenced above. The Select Board will act on the proposed amendments at its meeting on September 11, 2023. The Planning Board will hold a hearing on the proposed amendments at its meeting on September 13, 2023. In addition to the drafting, technical and structural amendments, the following is a high-level summary of the proposed substantive amendments, as previously discussed and drafted by the Planning Board: 1. Removed the requirement to obtain a special permit for an ADU in the Pleasant Bay and Herring River Watersheds, and the Zone II; 2. Lowered the special permit minimum lot area requirement from 30,000 sq ft to 15,000 sq ft for an ADU; 3. Deleted percentage limitation on ADU size and increased the maximum allowable floor area size for an ADU from 900 sq ft to 1000 sq ft; 4. Added the VB district to where an ADU is allowed by right on lots 15,000 sq ft or greater (as is the case in all the residential “R” districts); 5. Added a purpose clause that emphasizes ADUs are for year-round dwelling purposes; 6. Reduced ADU parking requirements; 7. Created an opportunity for part time residents to create an ADU by special permit; 8. Clarified further that an ADU is a use accessory to a single-family dwelling and is not a commercial or accommodations-type use; 9. Clarified further that short term rental use is not allowed on a lot with an ADU; 10. Gave more discretion to the building commissioner to establish procedures for the administration and enforcement of ADUs. 11. Removed annual building permit caps for the creation of ADUs. Town Of Brewster 2198 Main Street Brewster, Massachusetts 02631-1898 (508) 896-3701 x1150 Office of: Planning Department Article IX Special Regulations § 179-42.2 Accessory single-family dwelling units (ADUs). The purposes of this ADU Section are to promote the creation of year-round rental dwelling units in the Town; to increase housing choice and the diversity of housing types in the Town; and to preserve the community, especially by facilitating housing that allows seniors, working people and young adults to remain and live in Brewster; all while supporting the existing desirable character of Brewster’s residential neighborhoods and districts. Accessory single-family dwelling units shall be permitted subject to the following standards: A. An ADU may be located within, or connectedadjacent to or adjoining a single-family dwellinghouse, or in a detached, building accessory residential building to a single-family dwellinghouse, subject to the Definitions of § 179-2; the requirements of Table 1, Use Regulations, and Table 2, Area Regulations/Minimum Required Lots; and all standards of this Ssection. An ADU shall maintain a separate entrance(s), either directly from the outside or through an entry or shared corridor sufficient to meet the requirements of the State Building Code for safe egress. Also see the Definitions section of this Chapter, § 179-2. B. There shall be no more than one ADU per lot. An ADU may be located within a Zone II (Zone of Contribution to a Public Drinking Water Well), in the watershed of the Herring River, or the watershed to Pleasant Bay, subject to approval of a Special Permit by the Zoning Board of Appeals. All ADUs within these areas shall be required to install advanced nitrogen treatment septic systems, if deemed necessary. C. An ADU shall have no more than two bedrooms and no more than one thousand (1000) square feet of net floor area. D. A minimum of one parking space for the ADU shall be provided in addition to the parking spaces for the principal dwelling. E. A detached, accessory residential building in which an ADU is located shall not otherwise contain bedrooms not associated with the ADU. F. All construction in connection with an An ADU shall be subject to and comply with all other provisions of this Chapter, as applicable, including without limitation the building height, coverage and setback requirements for the underlying lot, either as set out in Table 2, Area Regulations, Table 3, Height and Bulk Regulations, or as otherwise may be permitted in Article VIII of this Chapter. To the extent there is conflict between the provisions in this Section and other provisions in this Chapter, the provisions in this Section shall control. attached to a principal dwelling shall conform to building setbacks for a single-family house in the Zoning District where it is located. GD. There shall be no minimum lot size required to construct and maintain an ADU. However, a Special Permit, pursuant to the applicable standards in Section 179-51 herein, and Table 1, Use Regulations, shall be required from the Planning Board for an ADU on a lot less than 15,000 sq. ft. H. Either the principal dwelling or the ADU shallmust be occupied by the owner of the property on a year- round basis, except for bona fide temporary absences, as defined in § 179-2 and the other remaining dwelling unit shall be used for year-round dwelling purposes, leased or occupied for continuous periods of not less than twelve (12) months at a time. Notwithstanding the foregoing, an owner who does not so occupy the property on a year-round basis may apply for a Special Permit from the Planning Board, pursuant to the applicable standards in Section 179-51 herein, to authorize an ADU on the property and the use of whichever dwelling unit(s) said owner does not intend to occupy, either the principal dwelling, the ADU, or both, for year-round dwelling purposes, to be leased or occupied for continuous periods of not less than twelve (12) months at a time. Pursuant to its Special Permit authority under Section 179-51 of this Chapter, the Planning Board may consider and require, among other things, safeguards to ensure that privacy to abutting properties is reasonably maintained and that there are appropriate management and facilities in place to serve the dwelling units. The property owner shall be required to file a notarized affidavit with the Building Department annually, stating that either the principal dwelling or the accessory single-family dwelling unit will be, and/or has been, used as the principal residence of the owner for the next twelve-month period and that the remaining dwelling will be leased for a period of not less than 12 months. E. No more than 20 building permits shall be issued for the combined total of ADUs and ACDUs in a single calendar year. IF. An ADU shall be used and designed consistent with the single-family residential nature of the underlying property. There shall be no renting of rooms or boarding of lodgers in an ADU. An ADU shall not be used as an accommodations-type use, such as a lodging house. There shall be no subletting, renting of rooms, or boarding of lodgers in an ADU on a short-term basis, and no Short-Term Rental use shall be permitted on a lot containing in an ADU. JG. An ADU shall be subjectshall conform to all applicable State and local laws and regulations, regulating new construction or new residential use including without limitation the State Building Code and related Certificate of Occupancy requirements; , and applicable State plumbing, electrical, and fire codes;, Title 5, 310 CMR 15.00, and the State Sanitary Code, 105 CMR 410.00, and corresponding local Board of Health regulations;health and conservation State and local Wetlands laws and regulations and bylaws. A Certificate of Occupancy shall be required for any ADU. H. There shall be no more than two residential units in total on a lot containing an ADU. I. A minimum of one parking space per bedroom of the ADU shall be provided. J. An ADU shall be clearly subordinate in use, size and design to the principal single-family dwelling. An ADU shall be designed so that, to the maximum extent practical, the appearance of the property on which it is to be located remains that of a single-family residential property and the privacy of abutting properties is maintained. K. An ADU shall not be severed in use or ownership from the principal dwelling to which it is accessory, including but not limited to subjecting the underlying lot or any portion thereof to the condominium form of ownership. L. The owner of a property with an ADU shall be required to file a written affidavit with the Building Department certifying compliance with the standards of this Section, including the use and occupancy standards. The Building Department shall establish, administer, and maintain, and may amend from time to time, the affidavit process and forms referenced herein. MN. The Building Commissioner is authorized to establish an administrative permitting and/ or registration process for ADUs, in addition to other permits or approvals that might be required, to assist in documenting ADUs in the Town for informational or zoning compliance purposes. NO. Without limiting other enforcement remedies or actions available under this Chapter, including fines, the Building Commissioner is authorized to order that the cooking facilities and supporting utilities and fixtures within an ADU be removed in order to abate a violation of this Section. Article I General Provisions § 179-2 Definitions. B. As used in this chapter, the following terms shall have the meanings indicated: ACCESSORY SINGLE-FAMILY DWELLING UNIT (ADU) A dwelling unit located housing on the same lotunit, complete with its own sleeping, cooking and sanitary facilities, that is accessory and clearly subordinate to as the principal single-family dwelling to which it is accessory. An ADU shall be considered an accessory use. An ADU may be located within a single-family house containing a principal dwelling, or in a building accessory to a single-family house. An ADU shall have no more than two bedrooms and shall have a maximum habitable area of 900 square feet or 40% of the habitable area of the principal dwelling, whichever is less. Unenclosed additions constructed to serve an ADU such as an entry, secondary egress or exterior stairs shall not be included in the maximum habitable area of the ADU. DWELLING, ONE FAMILY DETACHED A building containing a single, separate dwelling unit, designed for use and occupancy by one family, which shall be considered a principal use and principal structure under this Chapter. Also referred to herein as a “single-family dwelling” or “single-family residence.” FLOOR AREA, NET The sum of the living areas on all the several floors within the perimeter of a building or portion thereof measured from the outsideinterior faces of the exterior walls, or dividing walls as applicable, without deduction for interior partitions and the like. It does not include cellars, unenclosed decks, porches, entries, or attics or unconditioned storage, cellar, mechanical, garage, or utility areas, or spaces similar to the foregoing, not useddesigned, intended for or capable of being used for human habitation or occupancy. or any floor space in accessory buildings or in the main building intended and designed for the parking of motor vehicles in order to meet the parking requirement of this chapter or any such floor space intended and designed for accessory heating and ventilating equipment. ZONING 179 Attachment 1 Table 1 Use Regulations Town of Brewster KEY: P = Permitted Use S = Special Permit Use Use with a dash ("-") = Prohibited Use District R-R R-L R-M C-H V-B I MRD PWS-CF Residential 1. Accessory residential building P P P -*P P - - - 2. Accessory commercial dwelling unit "ACDU" - - - S S - - - 3. Accessory single-family dwelling unit "ADU" on a lot of 1530,000 square feet or more P P P -*S PS - - - 4. Accessory single-family dwelling unit "ADU" on a lot less than S S S -*S S - - - 1530,000 square feet 5. Affordable multifamily dwelling units "AMFDU" - - - P - - - - 6. Cluster residential development S S S - - - - - 7. Construction trailer P P P P P P - - 8. Major residential development S S S S - - - - 9. Multifamily dwelling - - - S - - - - 10. One-family detached dwelling unit P P P - P - - - 11. One-family security dwelling - - - P P P - - 12. Planned residential development - S S - - - - - 13. Row or town houses - - - S - - - - 14. Subsidized elderly housing S S S S - - - - *Except as may be permitted for pre-existing nonconforming single-family residential properties under Article VIII of this Chapter 179. 179 Attachment 1:1 Supp 1, Nov 2019 [BREWSTER CODE, ZONING, CH. 179, TABLE/ ATTACHMENT 2, AREA REGULATIONS] Area District Use (square feet) R-R Any permitted structure or principal use 100,000 plus 100,000 for the second principal dwelling unit of a duplex R-L Any permitted structure or principal use 60,000 plus 60,000 for the second principal dwelling unit of a duplex R-M Any permitted structure or principal use 60,000 plus 60,000 for the second principal dwelling unit of a duplex C-H Row commercial 40,000 Multifamily dwellings 130,000 plus 10,000 per bedroom Hotel and motel 130,000 plus 2,000 per unit Row house or townhouse 130,000 plus 10,000 per bedroom Any other permitted structure or principal use14 15,000 V-B Any permitted structure or principal use 14 15,000 I Any permitted structure or use, other than those 20,000 listed above for the C-H DistrictZone (footnote 9)9 NOTES: 1 In general, only one principal structure shall be permitted on one lot. The exceptions are planned residential developments, row commercial development, subsidized elderly housing, planned business developments, community facilities, building and construction trade shop or garage uses, and public utilities., accessory single-family dwelling units (ADUs), and accessory commercial dwelling units (ACDUs) that comply with all provisions of §§ 179-42.2 and 179-42.3, respectively. ADUs may be permitted by right in the R-L, R-M and R-R zoning districts on lots of 30,000 square feet or greater, by Special Permit in these districts on lots less than 30,000 square feet, and by Special Permit in the C-H, V-B and I zoning districts. Also, residential lots may contain two principal single-family detached dwellings units if the lot is twice that required by the Table of Area Regulations for single-family dwellings residences in that district and if each dwellingunit is provided proper street access. 2 The width of the lot, measured at the front yard setback line, shall be at least 80% of the lot frontage. 3 At each end of a through lot, there shall be a setback depth required which is equal to the front yard depth required for the district in which each street frontage is located. 4 No building, except a boathouse or building used for agricultural purposes, shall be within 50 feet of any water body, waterc ourse or wetland area or, if subject to flooding, within 50 feet beyond its flood line to the higher elevation. 5 Projections into required yards or other required open spaces are permitted subject to the following: Balcony or bay window, limited in total length to 1/2 the length of the building, not more than two feet. Open terrace or steps or stoop, under four feet in height, up to 1/2 the required yard setback. Steps or stoop over four feet in height, windowsill, chimney, roof eave, fire escape, fire tower, storm enclosure or similar architectural features, not more than two feet. 6 Accessory buildings and structures. Any permitted accessory building in any R District shall conform to the following provisi ons: It shall not occupy more than 40% of the required rear yard. It shall be not less than 40 feet for R -R and R-L Districts and 30 feet for an R-M District from any street lot line and shall be not less than 25 feet in any R-R or R-L District or 20 feet in the R-M District from any lot line. It shall not exceed 30 feet in height. A temporary stand for retail sale of agricultural or farm products, where permitted. May be six feet from the front lot line. Any permitted barn shall be at least 50 feet from any street lot line or side or rear property line and at least 100 feet fro m any abutter's dwelling. 7 The front, side and rear yard clearances shown in this table for multifamily dwellings are applicable to each structure conta ining dwelling units. These distances should be used as though each structure is set on a separate lot. For example, two structures sitting side by side would have side yard clearances each of 30 feet or a total of 60 feet between the structures. 8 Intensity of use applications to nursing convalescent home. For purposes of interpreting the portion of this chapter, the term “unit” shall mean each bed designed for use by an individual receiving care at such facility. The first three units of a nursing/convalescent home shall require a minimum land area equal to the lot requirements for any 179 Attachment 2:2 06 - 01 - 2019 Lot Frontage2 (feet) Front (feet) Yards3,4,5,6,7 Side (feet) Rear (feet) 200 40 25 25 150 40 25 25 150 40 25 25 150 30 20 20 200 100 30 30 200 100 30 30 200 100 30 30 80 30 15 15 80 30 15 15 100 30 15 40 [BREWSTER CODE, ZONING, CH. 179, TABLE/ ATTACHMENT 2, AREA REGULATIONS] permitted structure or principal use in the district in which located, with the exception in the C -H District, where 20,000 square feet shall be required for the first three units of a nursing/convalescent home. In all districts where such use is allowed, including by special permit, each additional unit shall require a minimum of 4,000 square feet of land area. Front, side and rear yard requirements within the respective districts where special permits are required may be i ncreased at the discretion of the Board of Appeals, if the size of the project, proximity to incompatible adjacent uses or other factors potentially having an adverse effect on the health, safety or welfare of the persons under care at such facility justifies a more extensive buffer from property lines. The Board of Appeals shall ensure that egress from such facility shall be on a street which should be safe and adequate. No building, loading space, parking space or structure, other than a sign, shall be located within 200 feet of the Industrial District boundary line in an Industrial District. Exception, panhandle lots. This exception shall only apply to a single parcel of land at least three times the area required for a single lot in that residential district, intended to be divided or subdivided into not more than two lots. Such a division or subdivision may be exempt from any or all of the requirements of the Town of Brewster Planning Board rules and regulations, upon the express written approval of the Planning Board. The regulations for lot fronta ge as set forth in this section may be waived by the Planning Board upon the following conditions: There shall be no further subdivision of the lot(s). The lots) shall be used for single-family residential purposes. The area of the access to the lot as determined by the Planning Board shall not be used in determining lot size. The access to the lot as determined by the Planning Board shall not be used to provide access to any other lots. In no event shall the lot frontage and lot width be less than 30 feet. Multiple use of this section of this chapter shall not be used as a means of accomplishing the subdivision of land without th e construction of ways. Cottage colony conversion. An existing nonconforming cottage colony may not be converted to a single-family dwelling use under separate ownership, unless the lot upon which each building is located complies with the minimum requirements for single-family dwellings in the zoning district in which the land is located, and such nonconforming cottage colony may not be converted to a single-family use under condominium-type ownership, unless the lot meets the minimum zoning requirements in which the land is located. For subsidized elderly housing, see S-I Section 179-42 rather than this Table 2. An owner-occupied building containing two dwelling units, one of which shall be an accessory apartment with a net floor living area not exceeding 600 square feet, and including not more than one bedroom, a kitchen, living room and a bathroom, isshall be allowed by a special permit granted by the Board of Appeals. Such building dwelling shall be deemed to be owner-occupied if either dwelling unit is occupied by the property owner of record on a year-round basis, except for bona fide temporary absences during which the unit is not rented. A lot shall not contain both an ADU and an accessory apartment. Except that single-family dwelling uses and structures in the V-B district shall be subject to the R-M district requirements set out in this Table 2. Editor's Note: The C-L District which immediately followed was removed pursuant to Article 51, Annual Town Meeting, May 8, 1989.at the request of the Town. 9 10 11 12 13 14 179 Attachment 2:3 06-01-2019 Article IX Special Regulations § 179-42.2 Accessory single-family dwelling units (ADUs). The purposes of this ADU Section are to promote the creation of year-round rental dwelling units in the Town; to increase housing choice and the diversity of housing types in the Town; and to preserve the community, especially by facilitating housing that allows seniors, working people and young adults to remain and live in Brewster; all while supporting the existing desirable character of Brewster’s residential neighborhoods and districts. Accessory single-family dwelling units shall be permitted subject to the following standards: A. An ADU may be located within, connected to or adjoining a single-family dwelling, or in a detached, accessory residential building to a single-family dwelling, subject to all standards of this Section. An ADU shall maintain a separate entrance(s), either directly from the outside or through an entry or shared corridor sufficient to meet the requirements of the State Building Code for safe egress. Also see the Definitions section of this Chapter, § 179-2. B. There shall be no more than one ADU per lot. C. An ADU shall have no more than two bedrooms and no more than one thousand (1000) square feet of net floor area. D. A minimum of one parking space for the ADU shall be provided in addition to the parking spaces for the principal dwelling. E. A detached, accessory residential building in which an ADU is located shall not otherwise contain bedrooms not associated with the ADU. F. An ADU shall be subject to and comply with all other provisions of this Chapter, as applicable, including without limitation the building height, coverage and setback requirements for the underlying lot, either as set out in Table 2, Area Regulations, Table 3, Height and Bulk Regulations, or as otherwise may be permitted in Article VIII of this Chapter. To the extent there is conflict between the provisions in this Section and other provisions in this Chapter, the provisions in this Section shall control. G. There shall be no minimum lot size required to construct and maintain an ADU. However, a Special Permit, pursuant to the applicable standards in Section 179-51 herein, and Table 1, Use Regulations, shall be required from the Planning Board for an ADU on a lot less than 15,000 sq. ft. H. Either the principal dwelling or the ADU shall be occupied by the owner of the property on a year-round basis, except for bona fide temporary absences, and the other dwelling unit shall be used for year-round dwelling purposes, leased or occupied for continuous periods of not less than twelve (12) months at a time. Notwithstanding the foregoing, an owner who does not so occupy the property on a year-round basis may apply for a Special Permit from the Planning Board, pursuant to the applicable standards in Section 179-51 herein, to authorize an ADU on the property and the use of whichever dwelling unit(s) said owner does not intend to occupy, either the principal dwelling, the ADU, or both, for year-round dwelling purposes, to be leased or occupied for continuous periods of not less than twelve (12) months at a time. Pursuant to its Special Permit authority under Section 179-51 of this Chapter, the Planning Board may consider and require, among other things, safeguards to ensure that privacy to abutting properties is reasonably maintained and that there are appropriate management and facilities in place to serve the dwelling units. I. An ADU shall be used and designed consistent with the single-family residential nature of the underlying property. An ADU shall not be used as an accommodations-type use, such as a lodging house. There shall be no subletting, renting of rooms, or boarding of lodgers in an ADU on a short-term basis, and no Short-Term Rental use shall be permitted on a lot containing an ADU. J. An ADU shall be subject to all applicable State and local laws and regulations, including without limitation the State Building Code and related Certificate of Occupancy requirements; State plumbing, electrical, and fire codes; Title 5, 310 CMR 15.00, and the State Sanitary Code, 105 CMR 410.00, and corresponding local Board of Health regulations; and State and local Wetlands laws and regulations. K. An ADU shall not be severed in use or ownership from the principal dwelling to which it is accessory, including but not limited to subjecting the underlying lot or any portion thereof to the condominium form of ownership. L. The owner of a property with an ADU shall be required to file a written affidavit with the Building Department certifying compliance with the standards of this Section, including the use and occupancy standards. The Building Department shall establish, administer, and maintain, and may amend from time to time, the affidavit process and forms referenced herein. M. The Building Commissioner is authorized to establish an administrative permitting and/ or registration process for ADUs, in addition to other permits or approvals that might be required, to assist in documenting ADUs in the Town for informational or zoning compliance purposes. N. Without limiting other enforcement remedies or actions available under this Chapter, including fines, the Building Commissioner is authorized to order that the cooking facilities and supporting utilities and fixtures within an ADU be removed in order to abate a violation of this Section. Article I General Provisions § 179-2 Definitions. B. As used in this chapter, the following terms shall have the meanings indicated: ACCESSORY SINGLE-FAMILY DWELLING UNIT (ADU) A dwelling unit located on the same lot as the principal single-family dwelling to which it is accessory. An ADU shall be considered an accessory use. DWELLING, ONE FAMILY DETACHED A building containing a single, separate dwelling unit, designed for use and occupancy by one family, which shall be considered a principal use and principal structure under this Chapter. Also referred to herein as a “single-family dwelling” or “single-family residence.” FLOOR AREA, NET The sum of the living areas on all floors within the perimeter of a building or portion thereof measured from the outside faces of the exterior walls, or dividing walls as applicable, without deduction for interior partitions and the like. It does not include unenclosed decks, porches, entries, or unconditioned storage, cellar, mechanical, garage, or utility areas, or spaces similar to the foregoing, not designed, intended or capable of being used for human habitation or occupancy. ZONING 179 Attachment 1 Table 1 Use Regulations Town of Brewster KEY: P = Permitted Use S = Special Permit Use Use with a dash ("-") = Prohibited Use District R-R R-L R-M C-H V-B I MRD PWS-CF Residential 1. Accessory residential building P P P -* P - - - 2. Accessory commercial dwelling unit "ACDU" - - - S S - - - 3. Accessory single-family dwelling unit "ADU" on a lot of 15,000 square feet or more P P P -* P - - - 4. Accessory single-family dwelling unit "ADU" on a lot less than S S S -* S - - - 15,000 square feet 5. Affordable multifamily dwelling units "AMFDU" - - - P - - - - 6. Cluster residential development S S S - - - - - 7. Construction trailer P P P P P P - - 8. Major residential development S S S S - - - - 9. Multifamily dwelling - - - S - - - - 10. One-family detached dwelling P P P - P - - - 11. One-family security dwelling - - - P P P - - 12. Planned residential development - S S - - - - - 13. Row or town houses - - - S - - - - 14. Subsidized elderly housing S S S S - - - - *Except as may be permitted for pre-existing nonconforming single-family residential properties under Article VIII of this Chapter 179. 179 Attachment 1:1 Supp 1, Nov 2019 [BREWSTER CODE, ZONING, CH. 179, TABLE/ ATTACHMENT 2, AREA REGULATIONS] Area District Use (square feet) R-R Any permitted structure or principal use 100,000 plus 100,000 for the second principal dwelling R-L Any permitted structure or principal use 60,000 plus 60,000 for the second principal dwelling R-M Any permitted structure or principal use 60,000 plus 60,000 for the second principal dwelling C-H Row commercial 40,000 Multifamily dwellings 130,000 plus 10,000 per bedroom Hotel and motel 130,000 plus 2,000 per unit Row house or townhouse 130,000 plus 10,000 per bedroom Any other permitted structure or principal use 15,000 V-B Any permitted structure or principal use14 15,000 I Any permitted structure or use, other than those 20,000 listed above for the C-H District9 NOTES: 1 In general, only one principal structure shall be permitted on one lot. The exceptions are planned residential developments, row commercial development, subsidized elderly housing, planned business developments, community facilities, building and construction trade shop or garage uses, and public utilities. Also, residential lots may contain two principal single-family detached dwellings if the lot is twice that required by the Table of Area Regulations for single-family dwellings in that district and if each dwelling is provided proper street access. 2 The width of the lot, measured at the front yard setback line, shall be at least 80% of the lot frontage. 3 At each end of a through lot, there shall be a setback depth required which is equal to the front yard depth required for the district in which each street frontage is located. 4 No building, except a boathouse or building used for agricultural purposes, shall be within 50 feet of any water body, watercourse or wetland area or, if subject to flooding, within 50 feet beyond its flood line to the higher elevation. 5 Projections into required yards or other required open spaces are permitted subject to the following: Balcony or bay window, limited in total length to 1/2 the length of the building, not more than two feet. Open terrace or steps or stoop, under four feet in height, up to 1/2 the required yard setback. Steps or stoop over four feet in height, windowsill, chimney, roof eave, fire escape, fire tower, storm enclosure or similar architectural features, not more than two feet. 6 Accessory buildings and structures. Any permitted accessory building in any R District shall conform to the following provisions: It shall not occupy more than 40% of the required rear yard. It shall be not less than 40 feet for R-R and R-L Districts and 30 feet for an R-M District from any street lot line and shall be not less than 25 feet in any R-R or R-L District or 20 feet in the R-M District from any lot line. It shall not exceed 30 feet in height. A temporary stand for retail sale of agricultural or farm products, where permitted. May be six feet from the front lot line. Any permitted barn shall be at least 50 feet from any street lot line or side or rear property line and at least 100 feet from any abutter's dwelling. 7 The front, side and rear yard clearances shown in this table for multifamily dwellings are applicable to each structure containing dwelling units. These distances should be used as though each structure is set on a separate lot. For example, two structures sitting side by side would have side yard clearances each of 30 feet or a total of 60 feet between the structures. 8 Intensity of use applications to nursing convalescent home. For purposes of interpreting the portion of this chapter, the term “unit” shall mean each bed designed for use by an individual receiving care at such facility. The first three units of a nursing/convalescent home shall require a minimum land area equal to the lot requirements for any 179 Attachment 2:2 06 - 01 - 2019 Lot Frontage2 (feet) Front (feet) Yards3,4,5,6,7 Side (feet) Rear (feet) 200 40 25 25 150 40 25 25 150 40 25 25 150 30 20 20 200 100 30 30 200 100 30 30 200 100 30 30 80 30 15 15 80 30 15 15 100 30 15 40 [BREWSTER CODE, ZONING, CH. 179, TABLE/ ATTACHMENT 2, AREA REGULATIONS] permitted structure or principal use in the district in which located, with the exception in the C-H District, where 20,000 square feet shall be required for the first three units of a nursing/convalescent home. In all districts where such use is allowed, including by special permit, each additional unit shall require a minimum of 4,000 square feet of land area. Front, side and rear yard requirements within the respective districts where special permits are required may be increased at the discretion of the Board of Appeals, if the size of the project, proximity to incompatible adjacent uses or other factors potentially having an adverse effect on the health, safety or welfare of the persons under care at such facility justifies a more extensive buffer from property lines. The Board of Appeals shall ensure that egress from such facility shall be on a street which should be safe and adequate. No building, loading space, parking space or structure, other than a sign, shall be located within 200 feet of the Industrial District boundary line in an Industrial District. Exception, panhandle lots. This exception shall only apply to a single parcel of land at least three times the area required for a single lot in that residential district, intended to be divided or subdivided into not more than two lots. Such a division or subdivision may be exempt from any or all of the requirements of the Town of Brewster Planning Board rules and regulations, upon the express written approval of the Planning Board. The regulations for lot frontage as set forth in this section may be waived by the Planning Board upon the following conditions: There shall be no further subdivision of the lot(s). The lots) shall be used for single-family residential purposes. The area of the access to the lot as determined by the Planning Board shall not be used in determining lot size. The access to the lot as determined by the Planning Board shall not be used to provide access to any other lots. In no event shall the lot frontage and lot width be less than 30 feet. Multiple use of this section of this chapter shall not be used as a means of accomplishing the subdivision of land without the construction of ways. Cottage colony conversion. An existing nonconforming cottage colony may not be converted to a single-family dwelling use under separate ownership, unless the lot upon which each building is located complies with the minimum requirements for single-family dwellings in the zoning district in which the land is located, and such nonconforming cottage colony may not be converted to a single-family use under condominium-type ownership, unless the lot meets the minimum zoning requirements in which the land is located. For subsidized elderly housing, see Section 179-42 rather than this Table 2. An owner-occupied building containing two dwelling units, one of which shall be an accessory apartment with a net floor area not exceeding 600 square feet and not more than one bedroom, is allowed by a special permit granted by the Board of Appeals. Such building shall be deemed to be owner-occupied if either dwelling unit is occupied by the property owner of record on a year-round basis, except for bona fide temporary absences. A lot shall not contain both an ADU and an accessory apartment. Except that single-family dwelling uses and structures in the V-B district shall be subject to the R-M district requirements set out in this Table 2. Editor's Note: The C-L District was removed pursuant to Article 51, Annual Town Meeting, May 8, 1989. 9 10 11 12 13 14 179 Attachment 2:3 06-01-2019