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08-021 766 North King St-Special Permit-2003City of Northampton fy : Planning Board - Decision Date: March 11, 2003 Hearing No.: PLN- 2003 -00 APPLICATION TYPE: SUBMISSION DATE: �fJ /2003 Amendment to Permit icant's Name: PARADISE REA LTY PARTNERS LLC ADDRESS: 1275 ELM ST TOWN: STATE ZIP CODI WEST SPRINGFIELD MA 01089 PHONE NO.: FAX NO.: (413) 785 4153 EMAIL ADDRESS: Site information: STREET NO.: 766 NORTH KING ST NORTHAMPTON M 01060 08 021 001 Book: p DATE: Owner's Name: JUN '` — " COMPANY NAME: NAME PARADISE REALTY PARTNERS LLC ADDRESS: ADDRESS: 1275 ELM ST TOWN: STATE: ZIP CODE: TOWN: WEST SPRINGFIELD MA 01089 PHONE NO.: FAX NO.: PHONE NO.: (413) 785 -1153 SITE ZONINU: HS SECTION OF BYLAW: 5.2, 6.5, 8.6, 10.1 & 11 Approved With Conditions Name: CODE: NO.: NATURE OF PROPOSED WORK: Amended site plan -demo & construction of new 11/270 sq. ft. medical office bldg. HARDSHIP: CONDITION OF APPROVAL: 1. The project must be built as shown on the referenced site plans, including the appearance of the elevations, except as hereafter provided. 2. Prior to issuance of the building permit, the full set of size D plans must be revised to reflect the following: a. No catch basin to catch basin connections are allowed. Catch Basin 1 must be replaced wi a drainage manhole, and new Catch Basin installed adjacent to that manhole. b. A catch basin detail, with 4' sumps and a gas trap, must be provided. c. An ADA compliant wheelchair ramp and detail must be shown where the sidewalk crosses the granite curb. d. Lightening levels shall not exceed those shown on the submitted photometric plan and the lamp/light filament shall not extend below the light fixture. e. The information shown on the February 25, 2003 revisions. f. The dogwoods north -west of the building may be moved up to 20 feet south to create a snow storage area. 3. Maintenance of stormwater management facilities shall be by the owner and conducted twice per year. Reports showing proof of Inspections, necessary cleaning, and street sweeping by qualified professionals shall be submitted to the Office of Planning and Development no later than May 15 and November 15 each year. Street sweepings shall be conducted monthly April to June and September to November. 4. The traffic Island in the middle of the parking lot shall be repainted annually. FINDINGS: The Planning Board GRANTED the amendment of the Special Permit with Site Plan Approval previously granted on October 24, 2002, based on the following plans and information submitted with the application, as amended by any conditions attached to this permit 1. "Existing Conditions and Demolition Plan, Amended Site Plan Review Submission' Sheet No. SPR -1, prepared by The Berkshire Design Group. Inc., dated February 6, 2003 and revised on February 25, 2003. 2. "Layout Plan, Amended Site Plan Review Submission" Sheet No. SPR -2, prepared by The Berkshire Design Group, Inc., dated October 16, 2002 and revised on February 25, 2003. GeoTMS® 2003 Des Lauriers Municipal Solutions, Inc. Planning Board - Decision City of Northampton Hearing No.: PLN- 2003 -0065 Date: March 11, 2003 APPLICATION TYPE: SUBMISSION DATE: Amendment to Permit I 2/7 /2003 Applicant's Name: Owner's Name: Siirvovnr'c Alnmma NAME: PARADISE REALTY PARTNERS LLC NAME: PARADISE REALTY PARTNERS LLC COMPANY NAME: - ADDRESS: 1275 ELM ST ADDRESS: 1275 ELM ST ADDRESS: TOWN: WEST SPRINGFIELD STATE: MA ZIP CODE: 01089 TOWN: WEST SPRINGFIELD STATE: MA ZIP CODE: 01089 TOWN: STATE: ZIP CODE: PHONE NO.: (413) 785 -1153 FAX NO.: PHONE NO.: (413) 785 -1153 FAX NO.: PHONE NO.: FAX NO.: EMAIL ADDRESS: EMAIL ADDRESS: EMAIL ADDRESS: Site Information: STREET NO.: SITE ZONING: 766 NORTH KING ST HB TOWN: SECTION OF BYLAW: NORTHAMPTON MA 01060 5. 2 , 6.5 , 8. 6 , 10.1 & 11 MAP: BLOCK: LOT: MAP DATE: ACTION TAKEN: 08 1 021 001 1 Approved With Conditions Book: Page: 5006 175 NATURE OF PROPOSED WORK: Amended site plan -demo & construction of new 11/270 sq. ft. medical office bldg. HARDSHIP: CONDITION OF APPROVAL: FINDINGS: 1. The project must be built as shown on the referenced site plans, including the appearance of the elevations, except as hereafter provided. 2. Prior to issuance of the building permit" the full set of size D plans must be revised to reflect the following: a. No catch basin to catch basin connections are allowed. Catch Basin 1 must be replaced with a drainage manhole, and new Catch Basin installed adjacent to that manhole. b. A catch basin detail, with 4' sumps and a gas trap, must be provided. c. An ADA compliant wheelchair ramp and detail must be shown where the sidewalk crosses the granite curb. d. Lightening levels shall not exceed those shown on the submitted photometric plan and the lamplilght fllament shall not extend below the light fixture. e. The information shown on the February 25, 2003 revisions. f. The dogwoods north -west of the building may be moved up to 20 feet south to create a snow storage area. 3. Maintenance of stormwater management facilities shall be by the owner and conducted twice per year. Reports showing proof of inspections, necessary cleaning, and street sweeping by qualified professionals shall be submitted to the Office of Planning and Development no later than May 15 and November 15 each year. Street sweepings shall be conducted monthly April to June and September to November. 4. The traffic island In the middle of the parking lot shall be repainted annually. The Planning Board GRANTED the amendment of the Special Permit with Site Plan Approval previously granted on October 24, 2002, based on the following plans and information submitted with the application, as amended by any conditions attached to this permit: 1. "Existing Conditions and Demolition Plan, Amended Site Plan Review Submission" Sheet No. SPR -1, prepared by The Berkshire Design Group, Inc., dated February 6, 2003 and revised on February 25, 2003. 2 "Layout Plan, Amended Site Plan Review Submission" Sheet No. SPR -2, prepared by The Berkshire Design Group, Inc., dated October 16, 2002 and revised on February 25, 2003. GeOTMS® 2003 Des Lauriers Municipal Solutions, Inc. Planning Board - Decision Hearing No.: PLN -2003 -0065 City of Northampton Date: March 11, 2003 3. "Grading, Drainage and Utilities Plan, Amended Site Plan Review Submission" Sheet No. SPR -3, prepared by The Berkshire Design Group, Inc. Dated February 6, 2003 and revised on February 25, 2003. 4. "Planting Plan, Amended Site Plan Review Submission" Sheet No. SPRA prepared by The Berkshire Design Group, ►nc., dated February 6, 2003 and revised on February 25, 2003. 5. "Site Details, Amended Site Plan Review Submission" Sheet No. SPR -5, prepared by The Berkshire Design Group, Inc., dated February 6, 2003 and revised on February 25, 2003. 6. "Site Details, Amended Site Plan Review Submission' Sheet No. SPR -6, prepared by The Berkshire Design Group, Inc., dated February 6, 2003 and revised on February, 25, 2003. 7. "Lighting Plan, Pioneer Medical Center" Sheet No. 1, prepared by Kim Lighting, dated February 19, 2003. 8. Lighting Plan, Pioneer Medical Center" Sheet No. 2, prepared by Kim Lighting, dated February 19, 2003. 9. "Proposed Fire Lane, Paradise Realty Partners" prepared by The Berkshire Design Group, Inc. Dated February 25, 2003. 10. 'SK1- Accessible Curb Cut, Paradise Realty Partners' prepared by The Berkshire Design Group, Inc. Dated February 20, 2003. In Granting the Amendment of the Special Permit with Site Plan Approval (major project), previously granted, the Planning Board found that. A. The request for the demolition of an existing building and the construction of a 11,270 sq. Ft medical office building with associated site development; protects adjoining premises against seriously detrimental uses because the proposed medical building is an allowed use within the Highway Business zone. The proposed medical building will serve to buffer the surrounding residential district from an existing gas station and will make use of an abandoned used car lot In addition, the applicant has included provisions for surface water drainage, sound and sight buffers and preservation of views, light and air as depicted in plans and information submitted with the application. B. The requested use will promote the convenience and safety of vehicular and pedestrian movement within the site and on aceacent streets, minimize traffic impacts on the streets and roads in the area because the proposed plan incorporates distinct changes in paving materials that visually highlight pedestrian movement thus separating the pedestrians from the vehicular traffic. A traffic impact statement was submitted Indicating that the proposed use will have no change in the level of service and a majority of the patient visits would not be during peak traffic hours. Access for persons with disabilities will be provided by associated curb ramps, signage, line striping and sidewalks, per ADA requirements. C The requested use will promote a harmonious relationship of structures and open spaces to the natural landscape, existing buildings and other community assets in the area because the proposed structure will be an improvement to the area and the existing vegetative buffer will be retained along the boundary of the site. D. The requested use will not overload, and will mitigate adverse impacts on the City's resources including the effect on the City's water supply and distribution system, sanitary and storm collection and treatment systems, fire protection, streets and schools because the site will be regraded to allow for positive drainage to anew stormwater management system. This system will discharge into an existing Mass Highway drainage system running along North King Street E. The requested use meets any special regulations set forth in Sections 5.2, 6.5, 8.6, 10.1 & 11.0 of the Zoning Ordinance because the proposed project meets the requirements for a 20 percent reduction in parking and for a 10 percent reduction in the required width of the landscaped buffer strip. F. The requested use bears a positive relationship to the public convenience or welfare. The use will not unduly impair the Integrity of character of the district or adjoining zones, nor be detrimental to the health, morals or general welfare because the proposed building will be in keeping with the surrounding business environment and will be an improvement to the existing abandoned gas station. The use shall be in harmony with the general purpose and intent of the Ordinance because the proposed project is an allowed use through a special permit as determined in Section 5.2 of the Northampton Zoning Ordinance. G. The requested use will promote City planning objectives to the extent possible and will not adversely effect those objectives, as defined In City master or study plans adopted under M.G.L. Chapter 41, Section 81 -C and D because the proposed project will make use of an underutilized area within the Highway Business District In addition, in reviewing the Site Plan submitted, the Planning Board determined that the application complied with the following technical peribimance standards. 1. The proposed project will decrease the number of curb cuts on site. 2. Pedestrian, bicycle and vehicular traffic are separated on site to the extent possible. GeoTMS® 2003 Des Lauriers Municipal Solutions, Inc. Planning Board - Decision City of Northampton Hearing No.: PLN- 2003 -0065 Date: March 11, 2003 The Planning Board voted 6:0 to grant the waivers as requested in the application. COULD NOT DEROGATE BECAUSE: FILING DEADLINE: MAILING DATE: HEARING CONTINUED DATE: DECISION DRAFT BY: APPEAL DATE: 31612003 3/20/2003 311312003 REFERRALS IN DATE: HEARING DEADLINE DATE: HEARING CLOSE DATE: FINAL SIGNING BY: APPEAL DEADLINE: 311312003 411312003 2/27/2003 2/27 /2003 313112003 FIRST ADVERTISING DATE: HEARING DATE: VOTING DATE: DECISION DATE: 311312003 3/27/2003 2/27 /2003 311112003 SECOND ADVERTISING DATE: HEARING TIME: VOTING DEADLINE: DECISION DEADLINE: 312012003 7:00 PM 7/12/2003 7/12/2003 MEMBERS PRESENT: Paul Voss Frandy Johnson George Kohout VOTE: votes to Grant votes to Grant votes to Grant Keith Wilson votes to Grant Kenneth Jodrie votes to Grant David Wilensky votes to Grant MOTION MADE BY: SECONDED BY: VOTE COUNT: DECISION: Keith Wilson Paul Voss 6 Approved with Conditions MINUTES OF MEETING: Minutes are available in the Office of Planning & Development CERTIFICATE OF SERVICE Pursuant to M.G.L. Chapter 40A, Section 11, I, Angela Dion, Board Secretary, hereby certify that I caused copies of this Decision to be mailed, postage - prepaid, to the Applicant and Owner on March 11, 2003. Imo GeoTMS® 2003 Des Lauriers Municipal Solutions, Inc. Planning Board - Decision City of Northampton File No.: PLN —2003 -0065 Date March 11, 2003 Pursuant to Massachusetts General Laws (MGL), Chapter 40A, Section 11, no Special Permit with Site Plan, or any extension, modification or renewal thereof, shall take effect until a copy of the decision bearing the certification of the City Clerk that twenty days have elapsed after the decision has been filed, or if such an appeal has been filed that it has been dismissed or denied, is recorded in the Hampshire County registry of Deeds or Land Court, as applicable and indexed under the name of the owner of record or is recorded and noted on the owner's certificate of title. The fee for such recording or registering shall be paid by the owner or applicant. It is the owner or applicant's responsibility to pick up the certified decision from the City Clerk and record it at the Registry of Deeds. (Please call the City Clerk prior to picking up the decision.) The Northampton Planning Board hereby certifies that a Special Permit with Site Plan Approval has been GRANTED and that copies of this decision and all plans referred to in it have been filed with the Planning Board and the City Clerk. Pursuant to Massachusetts General Laws, Chapter 40A, Section 15, notice is hereby given that this decision is filed with the Northampton City Clerk on the date below. If anyone wishes to appeal this action, an appeal must be filed pursuant to MGL Chapter 40A, Section 17, with the Hampshire County Superior Court or the Northampton District Court and notice of said appeal filed with the City Clerk within twenty days (20) of the date of that this decision was filed with the City Clerk. Applicant: Paradise Realty Partners, LLC DECISION DATE: February 27, 2003 DECISION FILED WITH THE CITY CLERK: March 11, 2003 Gf��6 ;��� i•t„ p T �j tl� �t F � �'• 1� Ly i ..i..�n.,._ ;v.�.,.,.ik 1uutiea1' `:...^..,"u:�::,.n. -.0 � :.,. `. d., ?3. -•s w.:_ r_ �:..•,.w....,- •.�.,..._...__.__ n J� 11 n J � 2 7 2CC�2 Fite No. Sty ti• §��:'� y}�'... ...........: v form. to the Boil s ce �wi, the r prin o orthampton rmation and return s 4� $10. f ding fee (check or money order) payable to the City o f N 'a 1. Name of Applicant: Paradise Rea Lty Partners LLC Tele hone: (413) 785 -1153 x110 ... Address: 1.275 Elm St. T^1 Springfield, MA 01089 P 2. Owner of Property: Same as above — Telephone: Address: licant: Owner X_ Contract Purchaser Lessee Other (explain) 3, Status of App • 766 North Kin Street Northam ton, MA 01060 Location: s 4. Job -- gT s - r iE- �k : 7 `` � Used Car Lot f �. 5. Existing Use of Structure /Proper y: j: � d Use /Work /Project /Occupation: (Use additional sheets 6. Description of Propose if necessary w 76 'k -4 1 riine a d a oci t L 7. 8. L�. i a,. X Engineered /Surveyed Plans Attached Plans: Sketch Plan _ ---- -- Site Plan _ _ X - Has a Special Permit /Variance /Finding ever been issued for /on the site? YES IF YES, date issued: NO DON'T KNOW IF YES: Was the permit recorded at the Registry of Deeds? NO _--- DON'T KNOW _- ---- -- YES IF YES: enter Book Page and /or -Document # � DONT KNOW YES 9. Does the site contain a brook, body of water or wetlands. NO _ —X-- IF YES, has a permit been or need to be obtained from the Conservation Commission? Needs to be obtained Obtained , date issued: (Form Continues On Ot' 1 1 � File # MP 20 03 00 APPLICANT /CONTACT PERSON Berkshire Design Group ADDRESS/PHONE 4 Allen Place (413) 582 -7000 PROPRRTY r [)-CATTON 766 NORTH KING ST THIS SECTION FOR OFFICIAL USE ONLY: PERMIT APPLICATION CHECKLIST ENCLOSED REQUIRED DATE Fee Paid 20 1,g 4�yt Building Permit Filled out Fee Paid Tvneof Construction: ZPA - DEMO & BUILD 9,976 SO FT MEDICAL OFFICE BLDG & ASSOCIATED PARKING New Construction Non Structural interior renovations Addition to Existing Accessory Structure Building Plans Included: Owner/ Statement or License 3 sets of Plans / Plot Plan THE FOLLOWING ACTION HAS BEEN TAKEN ON THIS APPLICATION BASED ON INFORMATION PRESENTED: Approved Additional permits required (see below) PLANNING BOARD PERMIT REQUIRED UNDER: § S 2 -- /p, / Intermediate Project : Site Plan AND /OR Special Permit with Site Plan Major Project: Plan AND /OR __ Special Permit with Site Plan ZONING BOARD PERMIT REQUIRED UNDER: Finding : Special Permit Variance* C Received & Recorded at Registry of Deeds Proof Enclose E C E � V E Other Permits Required: Curb Cut from DPW Water Availability Sewer Ava abi i F E B 1 4 2003 Septic Approval Board of Health Well Water Potability Board c f Health CITY CLERKS OFFICE NORTHAMPTON MA 01060 Permit from Conservation Commission Permit from CB Architecture Committee Permit from Elm Street Commission r � Signature of Building Official & Date Note: Issuance of a Zoning permit does not relieve a applicant's burden to comply with all Zoning requirements and obtain all required permits from Board of Health, Conservation Commission, Department of public'works and other applicable permit granting authorities. ' * Variances are granted only to those applicants who meet the strict standards Planning & Development for more information. of MGL 40A. Contact the Office of I� The Berkshire Design Group, Inc. February 6, 2003 Planning Board City of Northampton City Hall Northampton, MA 01060 03 -5 -YI p ECE0WE FEB 6 2003 CITY CLERKS OFFICE NORTHAMPTON MA 01060 RE: Amended Site Plan Approval / Special Permit for Medical Office Building. To the Planning Board: Enclosed please find the amended application for Site Plan Approval and Special Permit for the proposed medical office building at 766 North King Street. Because this is an amended site plan approval and special permit request, and as per Wayne Feiden's instructions, we have included only the project information that has changed since the original submission. Included you will find: • Application for Site Plan Special Permit • Application fee of $300.00 • Revised site plan drawings • Rendered copies of the revised building proposed for the site Landscape Architecture Civil Engineering We appreciate your review of the project, and look forward to discussing the changes with you at the earliest possible hearing date. If you have any Planning questions, or if you need any additional information, please let us know. Urban Design Sincerely, Environmental Services Th erkshire Resign Group, Inc. op Chris Wall Landscape Architect 4 Allen Place Northampton, Massachusetts 01060 Telephone (413) 582 -7000 Facsimile(413)582-7005 E -mail bdg @ berkshiredesign.com AMENDED SITE PLAN REVIVW "ENDED SITE PLAN.REVIEW �..J CITY OF NORTHAMPTON PLANNING BOARD APPLICATION FOR: Please Note: An omission of information could lead to a delay in processing your application 4. Parcel Identification: Zoning Map # 8 Parcel # 21 Zoning District: HB Street Address: 766 North King St. Northampton, MA 01060 5. Property Recorded in the Registry of Deeds: County: Hampshire Book: 5810 Page: 273 Status of Applicant: Owner X Contract Purchaser ; Lessee Other ; Property Owner: Same as above Address: Telephone: 6. 7. Describe Proposed Work/Project: (Use additional sheets if necessary): Demolition of existing building, construction of new 11,270 sq. ft. medical office building and associated parking, utilities and landscaping. Has the following information been included in the application? - Site/plot Plan X List of requested waivers Fee Signed Zoning Permit Review Form & Application 8. Site Plan and Special Permit Approval Criteria. (If any permit criteria does not apply, explain why) Use additional sheets if necessary. Assistance for completing this information is available through the Office of Planning & Development. A. How will the requested use protect adjoining premises against seriously detrimental uses? PLEASE SEE ORIGINAL SUBMISSION FOR RESPONSES TO THE FOLLOWING QUESTIONS. How will the project provide for. surface water drainage: sound and sight the preservation of views, light and air: I u UI FEB 6 CITY CLERKS UMU NORTHAMPTO MA 01060 4 (0. 5 -(0-13 3. Applicant's Name: Paradise Realty Partners, LLC Address: 1275 Elm St. West Springfield, MA 0 3phone• 413 -7 -1153 B. How will the requested use promote the convenience and safety of pedestrian movement within the site and on adjacent streets? How will the project minimiz traffic impacts on the streets and roads in the area? Where is the location of driveway openings in relation to traffic and adjacent streets? What features have been incorporated into the design to allow for: access by emergency vehicles: the safe and convenient arrangement of parking and loading spaces: provisions for persons with disabilities: C. How will the proposed use promote a harmonious relationship of structures and open spaces to: the natural landscape: to existing buildings: other community assets in the area: D. What measures are being taken that show the use will not overload the City's resources, including: water supply and distribution*system: sanitary sewage and storm water collection and treatment systems: fire protection, streets and schools: How will the proposed project mitigate any adverse impacts on the City's resources, as listed' above? E. List the section(s) of the Zoning Ordinance that states what special regulations are required for the proposed project (flag lot, common drive, lot size averaging, etc.) 5 How does the project meet the special requirements? (Use additional sheets if necessary) F. State how the project meets the following technical performance standards: Curb cuts are minimized: Check off M11 that apply to the project: use of a common driveway for access to more than one business use of an existing side street use of a looped service road 2. Does the project require more than one driveway cut? NO YES (if yes, explain why) 3. Are pedestrian, bicycle and vehicular traffic separated on -site? YES NO (if no, explain why) FOR PROJECTS THAT REQUIRE INTERMEDIATE SITE PLAN ApPROVAi ONLY . SIGN APPLICATION AND END HERE (Avuhcant must include waiver form on p 8 indicating that either all information is included or that waivers are being requested.) 9. I certify that the information contained herein is true and accurate to the best of my knowledge. The undersigned owner(s) grant Planning Board permission to enter the property to review this application. Date: Applicant's Signature: Date: Owner's Signature: (Owners signature or letter from owner authorizing applicant to sign.) not unduly impair the integrity or character of the district or adjoining zones: .,.MULM. LU LUC neaiui, morals or general welfare: be in harmony with the general purpose and intent of the Ordinance: n F. Explain why the requested use will: \I--- G. Explain how the requested use will promote City planning objectives to the extent possible and will not adversely effect those objectives, defined in City master study plans (Open Space and Recreation Plan; Northampton State Hospital Rezoning Plan; and Downtown Northampton: Today, Tomorrow and the Future)- 9. I certify that the information contained herein is true and accurate to the best of my knowledge. The undersigned owner(s) grant the Planning Board permission to enter t e property to review this application. The Berkshire Design Gro Ir;cJ (r"resRntat; ve) Date: Applicant's Signature: Date: Owner's Signature: 4 Allen Place 413 -582 -7000 (Owners signature or letter from ownq authorizing applicant to sign.) (Awlicant must include waiver form on u 8 indicating that either all information is included or that waivers are being req! ested.) PLEASE SEE ORIGINAL SUBMISSION FOR RESPONSES TO THE FOLLOWING QUESTIONS PLEASE SEE ORIGINAL SUBMISSION FOR RESPONSES TO THE FOLLOWING QUESTIONS Does the project incorporate 3 foot sumps into the storm water control system? Yes No (IF NO, explain Will the project discharge stormwater into the City's storm drainage system? Yes No (IF NO, answer the following:) Do the drainage calculations submitted demonstrate that the project has been designed so that there is no increase in peak flows from pre- to post - development conditions' during the: 1, 2, or 10 year Soil Conservation Service design storm ? Yes No (IF NO, explain why) Will all the runoff from a 4/10 inch rainstorm (first flush) be detained on -site for an average of 6 hours? Yes No (IF NO, explain why) Is the applicant requesting a reduction in the parking requirements? Yes No If yes, what steps have been taken to reduce the need for parking, and number of trips per day? 7 r - y SITE PLAN REQUIREMENTS REQUEST FOR WAIVERS APPLICATION This form MUST be included in your application packet. The site plan MUST contain the information listed below. The Planning Board may waive the submission of any of the required information, if the Applicant submits this form with a written explanation on why a waiver would be appropriate. To request a waiver on any required information, circle the item number and fill in the reason for the request. Use additional sheets if necessary. If you are not requesting any waivers please note that on this form PLEASE SEE ORIGINAL SUBMISSION FOR RESPONSES TO THESE QUESTIONS A. Locus plan B. Site plan(s) at a scale of 1 "=40' or greater B -1. Name and address of the owner and the developer, name of project, date and scale plans: B -2. Plan showing Location and boundaries of: the lot adjacent streets or ways all properties and owners within 300 feet all zoning districts within 300 feet B -3. Existing and proposed - buildings - setbacks from property lines - building elevations -all exterior entrances and exits (elevation plans for all exterior facades structures are encouraged) B-4. Present & proposed use of - the land buildings: B -5. Existing and proposed topography (for intermediate projects the permit granting authority may accept generalized topography instead of requiring contour lines): - at two foot contour intervals . - showing wetlands, streams, surface water bodies - showing drainage swales and floodplains: - showing unique natural land features B -6. Location of - parking & loading areas - public & private ways - driveways, walkways - access & egress points - proposed surfacing: B -7. Location and description of: all stormwater drainage/detention facilities water quality structures Public & private utilities/easements 8 MA gewage disposal facilities water supply facilities B-8. Existing & proposed: . landscaping, trees and plantings (size & type of plantings) stone walls, buffers and/or fencing- B-9. Signs - existing and proposed: Location dimensions/height color and illumination B-10. Provisions for refuse removal, with facilities for screening 9f refuse when appropriate: B -11. Lighting: _ - Location Details Photometric Plan showing no more than .5 foot candle at property line B-12. An erosion control plan and other measures taken to protect natural resources & water supplies: C. Estimated daily and peak hour vehicles trips generated by the proposed use, traffic patterns for vehicles and pedestrians showing adequate access to and from the site, and adequate vehicular and pedestrian circulation within the site. Site Plans submitted for major projects shall be prepared and stamped by a: Registered Architect, Landscape Architect, or Professional Engineer (At least one plan must have an original stamp, remaining plans must either have an original stamp or copy of original stamp.) 7 Paradise Realty medical BuildingDrainage Repon,.,/ October 3, 2002(revised January 8, 2003) (revised February 6, 2003) I. Introduction This report was originally prepared for a similar design, however, this revised report and calculations are for a reduced project. The new project consists of a smaller footprint for the building, (the original building was a single story 9,976 sf structure, the new building is a 5,625 sf two story structure), and a reduced area of pavement. This report is intended to present analysis and discussion for storm water management calculations and design performed for the Paradise Realty Groups proposed Medical Office Facility located at 766 North King Street in Northampton, Massachusetts. Construction improvements for the proposed project include: demolition of the existing building, construction of a new, 5,625 sq. foot structure intended to house medical and dental offices, reconfiguration and repaving of the existing parking lot, construction of a new parking lot, and installation of a new storm water management system and utilities. Impervious surface at the site will be increased from .42 acres to approximately .545 acres. The purpose of this analysis is to determine the 1, 2, 10 and 100 year peak flow rates for the site under current conditions and to design a storm water management system that maintains the existing peak flow rates while improving storm water runoff quality from the site. II. Site Soils According to the Natural Resources Conservation Service for the Central Part of Hampshire County (see attached soils map) the soils in the area of the proposed storm water management systems include HgA, Hinckley loamy sand, 0 to 3 percent slopes (hydrologic soil group A), Sc, Scitico silt loam (hydrologic soil group C) and Au, Amostown - Windsor silty substratum -Urban land complex (hydrologic soil group C). Type A soils were utilized for the purpose of the storm water management analysis. III. Existing Conditions The existing site houses a former vehicle service station with associated flat paved areas. Directly behind the building, the site becomes a fairly steep upward slope covered by natural forest vegetation. This condition continues to the rear property line. The existing site is shaped like a bowl where storm water runoff leaving the site flows down the steep, vegetated slopes, collecting in the flatter, service station area. Grades at the site direct runoff towards two trench drains running the length Paradise Realty ,edical BuildingDrainage Repo October 3, 2002(revised January 8, 2003) (revised February 6, 2003) of both site entrance driveways and a single leaching catch basin located in the rear of the paved area. Currently, both trench drains are full of sand and debris and are therefore, not functional. Similarly, the leaching catch basin does not appear to be working at this time. The original drainage concept apparently utilized the single leaching catch basin located in the rear of the lot for infiltration and these two trench drains which are believed to drain to a catch basin located on Route 5110 to remove runoff from the site. The municipal catch basin which drains the site also acts as a low point along the profile of Route 5110, collecting a portion of this roads runoff. The existing catch basin discharges all collected runoff through an 18" RCP pipe running under Route 5110 to an RCP flared end section located in the vegetated area of the off ramp from exit 21 off I -91. For storm water modeling purposes, the property lines at the site were used to bound the watershed with the control point located at the existing catch basin on Route 5110. IV. Proposed Conditions The proposed condition closely mimics the existing drainage patterns, utilizing the existing catch basin in Route 5110 as the ultimate point of discharge as well as the modeling control point. Incorporated in the proposed design are both storm water quality mechanisms as well as storm water retention and infiltration mechanisms with which to improve the quality of the runoff being discharged from the site as well as retain the peak flows off the site so as to equal the existing peak discharges from the site and to maintain groundwater recharge. Discussing the site from the rear, flow from the steep slope will be retained with a block wall equipped with a sub drain to relieve hydrostatic pressure behind the wall. This sub drain will be a 6" perforated pipe which discharges to the drainage trench located in front of the wall. The drainage trench collects both runoff from the wall sub drain as well as runoff generated by overland flow to the rear of the parking lot. All flow generated by the parking lot is put through a treatment catch basin which treats the runoff for total suspended solids and floatables utilizing stormceptor technology or an approved equal. Once treated, runoff from this catch basin is discharged into the detention chamber. In addition to the treated storm flows from the parking areas, runoff generated by the building roof is discharged directly into the detention structure. 2 Paradise Realty�dical BuildingDrainage Repo October 3, 2002(revised January 8, 2003) (revised February 6, 2003) The detention structure is approximately 20'x18' with two 12" inlets as discussed above and one 12" outlet located at the bottom of the tank. Flow from the tank is discharged to a control structure where three orifices, at varying elevations and in sizes ranging from 5 " -12" are used to control the discharge from the tank and maintain peak flows off the site at current levels. In addition to the control structure, a perforated pipe is proposed to be installed outside of the tank to allow flow within the tank to travel through the perforated pipe and into the surrounding gravel to ultimately provide for infiltration of some of the detained flow back into the surrounding groundwater system. Once flow is discharged from the control structure, it enters the municipal system through a new connection to the existing catch basin on Route 5110. V. Calculations & Design Under proposed conditions runoff will be collected, treated, peak flows detained, and piped to an existing catch basin which discharges flow to an existing vegetated area located within the off ramp of exit 21 off I -91. Based on the Rational Method, the proposed changes will not significantly effect the peak flow rates. Drainage calculations for the site were performed on Hydrocad version 6.0 using SCS TR -20 methodology. The downstream control point for this site under both existing and proposed conditions was the existing catch basin on Route 5110. Watershed subcatchment areas, runoff coefficients and watercourse slopes were based on the survey plans prepared by Harold Eaton Associates of Hadley, Massachusetts dated August 26, 2002. The proposed treatment chambers will be sized to treat the .4" storm runoff without bypass and all of this flow is detained within the detention structure. Calculations were performed for the 1, 2, 10 and 100 year frequency storms under existing and proposed conditions. Credit for infiltration provided by the perforated pipe attached to the tank was not taken. The results are shown in the summary table below. Paradise Realty � dical BuildingDrainage Report October 3, 2002(revised January 8, 2003) (revised February 6, 2003) VI. Summary The storm water management system has been designed to nearly maintain or reduce and/or are equivalent to the existing peak flow rates under proposed conditions for the 1, 2, 10, and 100 year storm frequencies. Infiltration associated with the perforated pipe surrounding the detention tank, the perforated pipe at eh toe of slope at the rear of the developed portion of the site will provide infiltration from all "clean" storm water sources. Special care has been taken treat runoff with a series of best management practices to remove total suspended solids and improve water quality to the maximum extent practicable. These practices include street sweeping, catch basins equipped with gas and oil separators and deep sumps and an integral storm water treatment chamber within the system. The proposed system outlet mimics the existing condition and prior to construction erosion control barriers will be installed as shown on the site plans. 4 PROPOS -2 Type iii 24 -hr Rainfall- 2.50" Prepared by The Berkshire Design Group, Inc. Page 1 HydroCADO 6.00 s/n 000752 ©1986 -2001 Applied Microcomputer Systems 2/6/03 Time span =5.00 -20.00 hrs, dt =0.05 hrs, 301 points Runoff by SCS TR -20 method, UH =SCS, Type III 24 -hr Rainfall =2.50" Reach routing by Stor- Ind +Trans method - Pond routing by Stor -Ind method Subcatchment 1S: PAVED Tc --5.0 min CN =98 Area =0.418 ac Runoff= 1.01 cfs 0.074 of Subcatchment b: b Tc=5.4 min CN =37 Area =1.074 ac Runoff= 0.00 cfs 0.000 of Subcatchment bldg: bldg Tc=5.0 min CN =98 Area--0.127 ac Runoff= 0.31 cfs 0.023 of Pond 1 P: (new node) Peak Storage = 455 cf Inflow= 1.32 cfs 0.097 of Primary= 0.92 cfs 0.095 of Outflow= 0.92 cfs 0.095 of Pond ecb: ecb Inflow= 0.92 cfs 0.095 of Primary= 0.92 cfs 0.095 of Runoff Area = 1.619 ac Volume = 0.097 of Average Depth = 0.72" U PROPOS -2 Type 111 24 -hr Rainfall -250" Prepared by The Berkshire Design Group, Inc. Page 2 HydroCAD® 6.00 s/n 000752 ©1986 -2001 ADDlied Micmmmnutpr .S'vetomc Subcatchment 1S: PAVED Runoff = 1.01 cfs @ 12.07 hrs, Volume= 0.074 of Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Type III 24 -hr Rainfall= 2.50" Area (ac) CN Description 0.418 98 Paved parking &sidewalks Tc Length Slope 5.0 Runoff = Capacity Description Direct Entry, Subcatchment b: b 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Type III 24 -hr Rainfall= 2.50" Area (ac) CN Description 0.214 39 >75% Grass cover, Good, HSG A 0.860 36 Woods Fair HSG A 1.074 37 Weighted Average Tc Length Slope Velocity Capacity Description 4.5 46 0.2400 0.2 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.90" 0.3 79 0.0400 4.1 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.6 235 0.0940 6.2 Shallow Concentrated Flow, Paved Kv= 20.3 fns 5.4 360 Total Subcatchment bldg: bldg Runoff = 0.31 cfs @ 12.07 hrs, Volume= 0.023 of Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Type III 24 -hr Rainfall= 2.50" Area (ac) CN Description 0.127 98 Paved parking & roofs PROPOS -2. Type 111 24 -hr Rainfall_- 2.50" Prepared by The Berkshire Design Group, Inc. Page 3 Hvrlrnr:orM A nn c/n nnn7XZO n C oni inQ_n A. 1:_� ..:________ ,. Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Pond 1 P: (new node) Inflow = 1.32 cfs @ 12.07 hrs, Volume= 0.097 of Outflow = 0.92 cfs @ 12.16 hrs, Volume= 0.095 af, Atten= 30 %, Lag= 5.1 min Primary = 0.92 cfs @ 12.16 hrs, Volume= 0.095 of Routing by Stor -Ind method, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Peak Elev= 95.80' Storage= 455 cf Plug -Flow detention time= 18.0 min calculated for 0.095 of (98% of inflow) Storage and wetted areas determined by Prismatic sections Elevation Surf.Area Inc.Store Cum.Store (feet) (sq -ft) (cubic -feet) (cubic -feet) 94.50 350 0 0 99.00 350 1,575 1,575 rimary OutFlow (Free Discharge) = Culvert 2= Orifice /Grate 3= Orifice /Grate = Orifice /Grate # Routing Invert Outlet Devices 1 Primary 94.60' 12.0" x 33.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 93.80' S= 0.02427' n= 0.010 Cc= 0.900 2 Device 1 96.60' 5.0" Vert. Orifice/Grate C= 0.600 3 Device 1 94.60' 6.0" Vert. Orifice/Grate C= 0.600 4 Device 1 99.00' 12.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 Pond ecb: ecb Inflow = 0.92 cfs @ 12.16 hrs, Volume= 0.095 of Primary = 0.92 cfs @ 12.16 hrs, Volume= 0.095 af, Atten= 0 %, Lag= 0.0 min Routing by Stor -Ind method, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs PROPOS -2 Type 111 24-hr Rainfall -290" Prepared by The Berkshire Design Group, Inc. Page 4 HvdroCADO 6.00 s/n 000752 ©1986 -2001 A 1' l d M' EU e RA; Systems Time span =5.00 -20.00 hrs, dt =0.05 hrs, 301 points Runoff by SCS TR -20 method, UH =SCS, Type III 24 -hr Rainfall= 2.90" Reach routing by Stor- Ind +Trans method - Pond routing by Stor -Ind method Subcatchment IS: PAVED Tc=5.0 min CN =98 Area--0.418 ac Runoff= 1.18 cfs 0.087 of Subcatchment b: b Tc=5.4 min CN =37 Area =1.074 ac Runoff= 0.00 cfs 0.000 of Subcatchment bldg: bidg Tc=5.0 min CN =98 Area =0.127 ac Runoff= 0.36 cfs 0.026 of Pond 1 P: (new node) Peak Storage = 545 cf Inflow= 1.54 cfs 0.113 of Primary-- 1.04 cfs 0.112 of Outflow= 1.04 cfs 0.112 of Pond ecb: ecb Inflow = 1.04 cfs 0.112 of Primary= 1.04 cfs 0.112 of Runoff Area= 1.619 ac Volume = 0.113 of Average Depth =0.84" PROPOS-2 Type 111 24-hr Rainfall -290" Prepared by The Berkshire Design Group, Inc. Page 5 HydroCAD® 6.00 s/n 000752 ©1986 -2001 Applied Microcomp Svstems n /L/nn Subcatchment 1S: PAVED Runoff = 1.18 cfs @ 12.07 hrs, Volume= 0.087 of Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Type III 24 -hr Rainfall= 2.90" Area (ac) CN Description 0.418 98 Paved parking &sidewalks Tc Length Slope Velocity Capacity Description 5.0 Direct Entry, Subcatchment b: b Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Type III 24 -hr Rainfall= 2.90" Area (ac) CN Description 0.214 39 >75% Grass cover, Good, HSG A 0.860 36 Woods Fair HSG A 1.074 37 Weighted Average Tc Length Slope Velocity Capacity Description 4.5 46 0.2400 0.2 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.90" 0.3 79 0.0400 4.1 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.6 235 0.0940 6.2 Shallow Concentrated Flow, Pave Kv= 20.3 fns 5.4 360 Total Subcatchment bldg: bldg Runoff = 0.36 cfs @ 12.07 hrs, Volume= 0.026 of Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Type III 24 -hr Rainfall= 2.90" Area (ac) CN Description 0.127 98 Paved parking & roofs PROPOS -2 Type 11124 -hr Rainfall -290" Prepared by The Berkshire Design Group, Inc. HydroCAD® 6.00 s/n 000752 ©1 986 -2001 ADDlied Mirrnr_mmni i + or e­..,..... Page 6 Tc Length Slope Velocity Capacity Description 5.0 Inflow = Outflow Primary = Direct Entry, Pond 1 P: (new node) 1.54 cfs @ 12.07 hrs, Volume= 0.113 of 1.04 cfs @ 12.16 hrs, Volume= 0.112 af, 1.04 cfs @ 12.16 hrs, Volume= 0.112 of Atten= 33 %, Lag= 5.4 min Routing by Stor -Ind method, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Peak Elev= 96.06' Storage= 545 cf Plug -Flow detention time= 16.8 min calculated for 0.112 of (99% of inflow) Storage and wetted areas determined by Prismatic sections Elevation Surf.Area Inc.Store Cum.Store (feet) (sq -ft) (cubic -feet) (cubic feet) 94.50 350 0 0 99.00 350 1,575 1,575 Pmary OutFlow (Free Discharge) =Culvert 2= Orifice /Grate 3= Odfice/Grate = Orifice /Grate # Routing Invert Outlet Devices 1 Primary 94.60' 12.0" x 33.0' long Culvert RCP, square edge headwall, Ke= 0.500 2 Device 1 96.60' 5.0" Vert. Orifice/Grate C =00.600 n= 0.010 Cc= 0.900 3 Device 1 94.60' 6.0" Vert. Orifice/Grate C= 0.600 4 Device 1 99.00' 12.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 Pond ecb: ecb Inflow = 1.04 cfs @ 12.16 hrs, Volume= 0.112 of Primary = 1.04 cfs @ 12.16 hrs, Volume= 0.112 af, Atten= 0 %, Lag= 0.0 min Routing by Stor -Ind method, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs PROPOS -2 Type 111 24 -hr Rainfall-4.40" Prepared by The Berkshire Design Group, Inc. Page 7 HydroCADO 6.00 s/n 000752 ©1986 -2001 Applied Microcomputer Systems 2/6/03 Time span =5.00 -20.00 hrs, dt =0.05 hrs, 301 points Runoff by SCS TR -20 method, UH =SCS, Type III 24 -hr Rainfall =4.40" Reach routing by Stor- Ind +Trans method - Pond routing by Stor -Ind method Subcatchment 1S: PAVED Tc=5.0 min CN =98 Area =0.418 ac Runoff= 1.81 cfs 0.135 of Subcatchment b: b Tc=5.4 min CN =37 Area =1.074 ac Runoff= 0.01 cfs 0.003 of Subcatchment bldg: bldg Tc=5.0 min CN =98 Area =0.127 ac Runoff= 0.55 cfs 0.041 of Pond 1 P: (new node) Peak Storage= 878 cf Inflow= 2.36 cfs 0.179 of Primary= 1.68 cfs 0.177 of Outflow= 1.68 cfs 0.177 of Pond ecb: ecb Inflow= 1.68 cfs 0.177 of Primary= 1.68 cfs 0.177 of Runoff Area =1.619 ac Volume = 0.179 of Average Depth = 1.33" PROPOS-2 Prepared by The Berkshire Design Group, Inc. TYPe 11124 -hr Rainfall= 4.40" HydroCAD® 6.00 s/n 000752 © _1986 -2001 Annliwi Minmi- e%,,.,i Page 8 Subcatchment 1S: PAVED Runoff = 1.81 cfs @ 12.07 hrs, Volume= 0.135 of Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Type III 24 -hr Rainfall= 4.40" 0.418 98 Paved parking &sidewalks Tc Length Slope Velocity 5.0 Description Direct Entry, Subcatchment b: b Runoff = 0.01 cfs @ 15.45 hrs, Volume= 0.003 of Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Type III 24 -hr Rainfall= 4.40" Area (ac) CN Description 0.214 39 >75% Grass cover, Good, HSG A 0.860 36 Woods Fair HSG A 1.074 37 Weighted Average Tc Length Slope Velocity Capacity Description 4.5 46 0.2400 0.2 Sheet Flow, 0.3 79 0.0400 4.1 Woods: Light underbrush n= 0.400 P2= 2.90" Shallow Concentrated Flow, 0.6 235 0.0940 6.2 Paved Kv= 20.3 fps Shallow Concentrated Flow, Paved Kv= 20.3 f s 5.4 360 Total Subcatchment bldg: bldg Runoff = 0.55 cfs @ 12.07 hrs, Volume= 0.041 of Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Type III 24 -hr Rainfall =4.40" Area (ac) CN Description 0.127 98 Paved parking & roofs PROPOS-2 Prepared by The Berkshire Design Group, Inc. Type ��� 24 - hr Rainfall= 4.40" HydroCADO 6.00 s/n 00075 ©1986 -2001 Annlipri Page 9 Tc Length Slope Velocity 5.0 Description Direct Entry, Pond 1 P: (new node) Inflow = 2.36 cfs @ 12.07 hrs, Volume= 0.179 of Outflow = 1.68 cfs @ 12.16 hrs, Volume= 0.177 af, Atten= 29 %, Lag= 5.2 min Primary = 1.68 cfs @ 12.16 hrs, Volume= 0.177 of Routing by Stor -Ind method, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs Peak Elev= 97.01' Storage= 878 cf 'Plug -Flow detention time= 13.8 min calculated for 0.177 of (99% of inflow) Storage and wetted areas determined by Prismatic sections Elevation Surf.Area Inc.Store Cum.Store ( feet) (sq -ft) (cubic -feet) (cubic feet) 94.50 350 0 0 99.00 350 1,575 1,575 Qrimary OutFlow (Free Discharge) '� = Culvert E 3 2= Orifice /Grate = Orifice /Grate =Orifice/Grate # Routing Invert 1 Primary 94.60' 2 Device 1 96.60' 3 Device 1 94.60' 4 Device 1 99.00' Pond ecb: ecb Inflow = 1.68 cfs @ 12.16 hrs, Volume= 0.177 of Primary = 1.68 cfs @ 12.16 hrs, Volume= 0.177 af, Atten= 0 %, Lag= 0.0 min 12.0" x 33.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 93.80' S= 0.0242 '/' n= 0.010 Cc= 0.900 5.0" Vert. Orifice/Grate C= 0.600 6.0" Vert. OrIfIce/Grate C= 0.600 12.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 Routing by Stor -Ind method, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs