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31B-159 (3) The construction plans, calculations, and information must be consistent with each other and consistent with plans approved by the Northampton Planning Board. .,.4 Aii *it_ '.� gnatu ; i y Engineer cc. Planning Board c/o Office of Planning and Development Building Department Conservation Commission c/o Office of Planning and Development M: \Stormwater Program \Stormwater Permits Internal \Permits_Active \King St 99 St Elizabeth Ann Seton \099 King St._Church.doc Page 4 of 4 Appendix D in the Stormwater Drainage Report must be revised as necessary and approved by the Northampton DPW. This agreement shall be approved by the Northampton DPW and signed by the owner and the Mayor of Northampton. Chapter 281 of the Northampton Stormwater Management Ordinance provides additional guidance for the requirements of this agreement. 2. This project will be required to submit one or more Notice of Intent (NOI) to the U.S. EPA for coverage under the NPDES Stormwater Construction General Permit. A copy of the final NOI and 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. The applicant had previously paid a Stormwater Management Permit application fee of $1,101.58 which was based on an estimated area of disturbance of 68,550 square feet and a fee of $700 per acre disturbed. Based on communications with Berkshire Design Group, the expected area of disturbance for the project as designed is estimated to be 125,000 square feet. The total fee for the Stormwater Management Permit for a project disturbing 125,000 square feet is $2002.72. Within 7 days of the issuance of this permit, the applicant must pay the remainder of the application fee required for this project which is $907.14. 4. The proposed stormwater management system is designed to mitigate peak stormwater flows. If, after construction of the proposed system, the system is found to increase stormwater flows to adjacent properties or to the municipal storm drain system, the owner shall redesign and reconstruct the drainage system to prevent any increased stormwater flows to adjacent properties or the municipal storm drain system. 5. Prior to the start of construction of the proposed subsurface dry wells and subsurface detention basins, the applicant shall: a. Notify the DPW of the expected start date of construction of these structures for inspection by the DPW b. Submit to the DPW for approval, the results of laboratory testing using an appropriate ASTM testing method that demonstrates the stone to be utilized for the subsurface dry wells and subsurface detention basin will meet the specified 40% minimum void space c. Submit to the DPW for approval, written confirmation by a Professional Engineer of Record in the Commonwealth of the soil textures, soil types, and the elevation of seasonal high groundwater at the location of each of the proposed dry wells and subsurface detention basins. 6. Prior to the start of construction, construction plans shall be submitted to the DPW for approval. The construction plans shall include the following revisions: a. The Detail for the Dry Well on Plan Sheet 3 must include a revised specification for clean washed stone. b. The Plans or the Detail for the Subsurface Detention Basin must include specification for the number and length of proposed 24" Perforated HDPE pipe. c. Plan Sheet 2 must specify the location of clean outs and access risers of the Subsurface Detention Basins. Each pipe section should have a clean out. M:\Stormwater Program \Stormwater Permits Internal \Permits_Active \King St 99 St Elizabeth Ann Seton \099 King St._Church.doc Page 3 of 4 r a. Revised Site Plan Submission, St. Elizabeth Ann Seton Parish, 99 King Street, Northampton, MA, Plan Sheets EX, 1, 2, _aud.'.. , sion late April 13, 2011, Stamped by Mark B. Darnold, , : , ': tr • gn Group, Inc. b. Stormwater Drainage Report f S izabeth Ann Seton Parish, Northampton, MA, Dated March 18, 2011, Pr ar<<.d t I he eire Design Group, Inc. c. Supplemental Drainage Report ummary and Revised HydroCAD Calculations for St. Elizabeth Ann Seton Par , Dated April 13, 2011, prepared by The Berkshire Design Group, Inc. I ' d. MA DEP Checklist for Stormwater Report, Dated 4/11/2011, Certified and stamped by Mark B. Darnold, P.E., The Berkshire Design Group, Inc. 2. The Northampton Department of Public Works (DPW) 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 DPW to schedule the following inspections: Initial Inspection, Erosion Control Inspection, Bury Inspection, and Final Inspection. The DPW may also conduct random inspections to ensure effective control of erosion and sedimentation during all phases of construction. 3. At the completion of the work, including construction of stormwater management facilities and landscaping, the applicant shall submit to the DPW as -built plans stamped by a professional engineer of record in the Commonwealth of Massachusetts and a statement from a professional engineer of record in the Commonwealth of Massachusetts certifying that the materials and construction of the stormwater management system was constructed in accordance with the approved plans and will function as designed. All changes to the approved stormwater facilities shall be documented by a professional engineer of record in the Commonwealth of Massachusetts and approved by the DPW prior to submission of as -built plans and the certification statement described above. 4. Annual Reports that are stamped by a Registered Professional Engineer documenting the actions completed as required by the Operation, Maintenance and Inspection Agreement shall be submitted to the Northampton Department of Public Works by October 1 of each year (see Specific Condition 1 below). 5. If construction of the proposed stormwater system has not started within five years of the issue date of this permit, then the permit will expire and a new permit will be required. Construction is defined as clearing, grading, excavation, filling, and installation of drainage structures on the lots specified in this permit. Specific Permit Conditions: 1. Prior to the start of construction or 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 private stormwater management facility by recording it in the land records of the 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 Stormwater Operation and Maintenance Plan submitted as M:\Stormwater Program \Stormwater Permits Internal\Permits_Active \King St 99 St Elizabeth Ann Seton \099 King St._Church.doc Page 2 of 4 3 t b " i pTMalyc Ma ti MANAGEME Pl R Irr ' 1 ' CATION DECISION City of Northampton Department of Public Ws its • NOR A �t H INSPECT/04 INCT/04 Project / Site Name: St Elizabe _` :..n Pa ish Parkin. Lot Ex.ansion Project Street or Location / Assessor ID: 99 King Street / Map 31B, Lots 159 & 192 Applicant Name: St. Elizabeth Ann Seton Parish Applicant Address/Phone: 3 Elm Street, Northampton, MA 01060 / 413 -584 -7310 Owner Name: Roman Catholic Bishop of Springfield Owner Address /Phone: 65 Elliot St, Springfield, MA / 413 - 732 -3175 Application Submission Date: 9/10/2010, Revised Submission 3/31/2011 THE FOLLOWING ACTION BY THE NORTHAMPTON DEPARTMENT OF PUBLIC WORKS HAS BEEN TAKEN ON THIS APPLICATION BASED ON INFORMATION PRESENTED: Disapproval of the Stormwater Management Permit Application based on a determination within seven days of the receipt of the application that the application is administratively incomplete (see attached documentation). Approval of the Stormwater Management Permit Application. X Approval of the Stormwater Management Permit Application subject to any conditions, modifications or restrictions required by the Department of Public Works (see below) Disapproval of the Stormwater Management Permit Application based upon a determination that the proposed plan, as submitted, does not meet the purposes set forth in the Northampton Stormwater Management. 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: M: \Stormwater Program \Stormwater Permits Internal\Permits_Active \King St 99 St Elizabeth Ann Seton \099 King St._Church.doc Page 1 of 4