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8 College Ln_Stormwater Permit Decision_20231208M:\Stormwater Management Permits\College Lane_8_Smith College\8 College Ln_Permit Decision_20231208.docx Page 1 of 4 Project / Site Name: Smith College Lazarus-Wurtele Center Project Street or Location / Assessor ID: 8 College Lane / 31B-294, 246 & 247 and 31D-002 Owner Name: The Trustees of Smith College, c/o Charlie Conant Owner Address/Phone: 126 West St, Northampton, MA 01063 / 413-585-2424 Applicant Name: Coleman Horsley, Nitsch Engineering Applicant Address/Phone: 2 Center Plaza, Suite 430, Boston, MA 02108 / 617-338-0063 Application Submission Date: 11/9/2023 THE FOLLOWING ACTION BY THE NORTHAMPTON STORMWATER AUTHORITY HAS BEEN TAKEN ON THIS APPLICATION BASED ON INFORMATION PRESENTED: X Approve the Stormwater Management Permit application subject to any conditions, modifications or restrictions required by the Stormwater Authority (see below) Request additional information that the Stormwater Authority deems necessary to adequately describe or review the proposed project (see attached documentation). Additional information shall be submitted to the Stormwater Authority within ninety (90) of this decision. Disapprove the Stormwater Management Permit application for failure to provide further information as requested by the Stormwater Authority, or based upon a determination that the proposed plan, as submitted, does not meet the purposes in 281.1.3 of the Stormwater Management Ordinance or the standards in these Regulations, nor adequately protect water resources, as set forth in the Northampton Stormwater Management Ordinance and the Stormwater Management Regulations Standard Permit Conditions: 1. All clearing, grading, drainage, construction, and development shall be conducted in strict accordance with the following plans and information submitted with the application and as amended by any conditions attached to this permit: a. Smith College Lazarus-Wurtele Center, 8 College Lane, Northampton, MA, Site Plans, Sheets Ex-1, 2, 3 & 4; C-000, 100, 200, 300, 400, 401, 402, 403, 404, 405, 500, 600, 700, 701, 702, 703, 704 & 705; L-101, 111, 131, 151, 200, 210, 400, STORMWATER MANAGEMENT PERMIT APPLICATION DECISION City of Northampton Department of Public Works M:\Stormwater Management Permits\College Lane_8_Smith College\8 College Ln_Permit Decision_20231208.docx Page 2 of 4 410, 420, 430, 440 & 441, Dated 11/1/2023, Stamped by Coleman McLean Horsley, P.E., Nitsch Engineering b. Stormwater Report for Smith College Lazarus-Wurtele Center, 8 College Lane, Northampton, MA, Dated 11/1/2023, prepared and stamped by Coleman McLean Horsley, P.E., Nitsch Engineering. c. Smith College Lazarus-Wurtele Silt Prison Phosphorus Removal Effectiveness Memo, Dated 12/5/2023, Coleman Horsley, P.E., Nitsch Engineering. d. Revised Stormwater Report for Smith College Lazarus-Wurtele Center, 8 College Lane, Northampton, MA, Revised Dated 12/6/2023 of the following sections: Sections 1-10, Appendix C Proposed Conditions HydroCAD Report, Appendix E Long-Term Pollution Prevention Plan and Stormwater Operation and Maintenance Plan, prepared by Coleman McLean Horsley, P.E., Nitsch Engineering. 2. The Northampton Stormwater Authority or its authorized representative shall be provided access to the property to conduct inspections before, during, and after construction activities as necessary. The applicant shall arrange with the Stormwater Authority to schedule the following inspections: Erosion Control Inspection, Bury Inspection of subsurface systems, and Final Inspection at the completion of work. The Stormwater Authority may also conduct random inspections to ensure effective control of erosion and sedimentation during all phases of construction. 3. The permittee shall be responsible for inspections of the construction of the stormwater management system. The permittee shall retain a Project Engineer (the design engineer or another professional engineer of record in the Commonwealth of Massachusetts) to document the construction of the proposed stormwater system and site development during all phases of the project as required in Section 12.3.1 of the Stormwater Management Regulations. All proposed changes to the approved stormwater facilities and site development shall be documented by the Project Engineer and submitted to the Stormwater Authority for review and approval by the Stormwater Authority prior to construction. The Project Engineer shall notify the permittee and the Stormwater Authority wherein the work fails to comply with the Stormwater Management Plan as approved. The approved plans shall be maintained at the site during the progress of the work. 4. Prior to issuance of a final certificate of occupancy and within six (6) months after the completion of construction and land disturbance activities, the permittee must submit an As-Built Report and certified As-Built Plans both signed and sealed by a Registered Professional Engineer (PE) licensed in the Commonwealth of Massachusetts (one hard copy and one electronic copy). The as-built report shall certify that the stormwater management facilities have been constructed in accordance with the approved Stormwater Management Plan, the conditions of the approved Stormwater Management Permit and any modifications to the plan approved by the Stormwater Authority. The as- built report must include an inspection of the stormwater management system consistent with the annual report required by the Stormwater Management Operation, Maintenance and Inspection Agreement for the project, confirmation that the stormwater management system has been cleaned of all sediment of debris and certification that the stormwater management system is functioning as designed. The as-built plans must depict all structural and non-structural stormwater management systems, including subsurface M:\Stormwater Management Permits\College Lane_8_Smith College\8 College Ln_Permit Decision_20231208.docx Page 3 of 4 components, impervious and pervious surface areas on site, elevations, inverts, grading, materials, plantings, stormwater storage volumes, discharge points, layout, specification of proprietary stormwater structures and other critical details of the stormwater management systems and any easements obtained. Any discrepancies from the approved Stormwater Management Plan should be noted in the as-built report. The Stormwater Authority shall review the as-built plans and notify the permittee of any deficiencies with the plan and compliance issues with the constructed stormwater management systems. 5. Prior to issuance of a final certificate of occupancy and within six (6) months after the completion of construction and land disturbance activities, the permittee shall record the as-built plans as approved by the Stormwater Authority and any accompanying stormwater easements at the Hampshire District Registry of Deeds and provide a receipt to the Stormwater Authority certifying this action. 6. Prior to issuance of a final certificate of occupancy and within six (6) months after the completion of construction and land disturbance activities permitted under a Stormwater Management Permit, the permittee must submit in writing a request for a Stormwater Management Certificate of Compliance (SMCC). The request shall include the following certification: "I hereby certify that all construction, development, and/or re-development has been completed in accordance with the project application and approved plans and all information is truthful to the best of my knowledge. The Stormwater Authority or its authorized agent may conduct inspections whenever necessary to determine compliance with the provisions of the Stormwater Management Permit, all applicable requirements of the Stormwater Management Ordinance and the Stormwater Management Regulations. Furthermore, I acknowledge that I am now responsible for the long-term operation and maintenance of all stormwater management facilities. During a transfer of ownership, I am responsible for informing prospective new owner(s) of the requirements of the Stormwater Management Operations, Maintenance and Inspection Agreement." The permittee must complete Standard Permit Conditions 4 and 5 before the Stormwater Authority will consider the request for a SMCC. 7. The landowner, its successors and assigns, including any homeowners association, shall adequately maintain the stormwater management facilities in good working condition and in compliance with the Stormwater Management Operation, Maintenance and Inspection Agreement filed at the Hampshire Registry of Deeds (see Specific Condition 1 below). Annual Reports documenting the actions completed as required by the Stormwater Management Operation, Maintenance and Inspection Agreement shall be submitted to the Northampton Stormwater Authority by January 1st of each year. 8. The construction activities shall begin within three years after issuance of the Stormwater Management Permit. If the project does not begin within three years, the permittee must request an extension from the Stormwater Authority. If the project has changed, revised plans and documents must be submitted to the Stormwater Authority for review. The Stormwater Authority may grant an extension, at its discretion, to the three-year time limit on a Stormwater Management Permit. If the project has changed in a substantive way, a new Stormwater Management Permit may be required. M:\Stormwater Management Permits\College Lane_8_Smith College\8 College Ln_Permit Decision_20231208.docx Page 4 of 4 Specific Permit Conditions: 1. Prior to the start of construction and issuance of a Building Permit, the applicant shall record an executed Stormwater Operation, Maintenance, and Inspection Agreement that is binding on all subsequent owners of land served by the stormwater management facility by recording it in the land records of the Hampshire Registry of Deeds. The maintenance schedule and responsibility for maintenance of all components of the proposed stormwater management system must be adequately specified in Attachment A to this Agreement. The draft Long-Term Pollution Prevention Plan and Stormwater Operation and Maintenance Plan submitted as part of the Stormwater Report must be revised to the satisfaction of the Stormwater Authority for use as Attachment A to the Agreement. The Stormwater Authority can provide additional guidance on required revisions to the maintenance schedule. The final agreement shall be approved by the Stormwater Authority and signed by the owner and the Mayor of Northampton. The final agreement shall be recorded at the Registry of Deeds at the owner’s expense. Section 8.6 of the Northampton Stormwater Management Regulations provides additional guidance for the requirements of this agreement. 2. A copy of the final Stormwater Pollution Prevention Plan (SWPPP) shall be submitted to the Northampton DPW for approval prior to the start of construction and prior to issuance of a building permit. 3. Construction plans and specifications shall be submitted to the Stormwater Authority for approval prior to issuance of a building permit and prior to the start of construction. 4. The proposed stormwater management system is designed to mitigate stormwater flows. If, after construction of the proposed project and stormwater system, the site is found to increase stormwater flows or pollutants in these flows to adjacent properties, roadways and stormwater systems, the owner shall redesign and reconstruct the stormwater management system to prevent any increased stormwater flows or pollutants in these flows to adjacent properties, roadways and stormwater systems. Stormwater Authority Date cc. Planning Board c/o Office of Planning and Sustainability Building Department Conservation Commission c/o Office of Planning and Development