421 North Main St_PermitCity of Northampton
Department of Public Works
STORMWATER MANAGEMENT PERMIT
APPLICATION DECISION
Project I Site Name: VA Medical Center Drainage Repair & Roadway Improvement Project
Project Street or Location I Assessor ID: 421 North Main St, Leeds, MA I Map 11, Parcel 001
Applicant Name:~B"-"r-=-ic"-"a'""'n'-'I""n'-"-c ________________________ _
Applicant Address/Phone: 155 State Street, Springfield, MA I 413-737-4515
Owner Name: VA Medical Center
Owner Address/Phone: 421 North Main St Leeds MA
Application Submission Date:_3~/9~/_20_1_2 ___________________ _
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.
_L 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 Storm water 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 Management Permits\North Main St_ 421_ VA Roadway & Parking\421 North Main St_Permit.docx
Page 1of4
a. Drainage Repair & Roadway Improvement Project, VA Northampton Medical
Center, Leeds, Massachusetts, Plan Sheets GS101-GS130, Dated 2/28/2011,
stamped by Bradford A Mills, P.E., Dewberry-Goodkind, Inc.
b. Erosion and Sedimentation Control Plan and Details, Sheets C-1, C-2 and C-3,
dated 2/15/2012, stamped by Terrence R. Reynolds, P.E., T Reynolds
Engineering.
c. Proposed Infiltration Basin Site Plan and Civil Details, Veterans Administration
Medical Center Stormwater Improvements for VA Project, Northampton, MA,
Sheets G-001, G-002, C-001, C-100 and C-200, stamped by Jeffery C. Stearns,
P.E., Woodard & Curran.
d. Stormwater Management Report, VA Medical Center, Leeds, MA, Drainage
Repair & Roadway Improvement Project, dated September 2013, stamped by
Jeffery C. Stearns, P.E., Woodard & Curran.
e. Stormwater Pollution Prevention Plan for Collapsed Roadway and Drainage
Repair, V AMC Northampton, Leeds, MA, dated 2/15/2012, stamped by Terrence
R. Reynolds, P.E., T Reynolds Engineering.
f. Letter to Northampton DPW from Jeffery Stearns, P.E. and Paul J. Jacques, P.E.,
RE: Drainage Repair & Roadway Improvement Project, dated 9/20/2013.
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 applicant shall notify the DPW of the dates of
construction of subsurface infiltration or detention systems prior to start of construction
of such structures. 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 st 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.
M:\Stormwater Management Permits\North Main St_ 421_ VA Roadway & Parking\421 North Main St_Permit.docx
Page 2 of 4
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 construction of the proposed infiltration basin, the applicant shall record an
executed Stormwater Operation, Maintenance, and Inspection Agreement (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 the Agreement. The draft Operation and Maintenance Plan submitted in the
Stormwater Management Report, dated September 2013 and cited above, can be used as
Attachment A but must be revised to the satisfaction of the Northampton DPW including
but not limited to the following items: clean out of the stormceptor at least once per year,
revision of inspection and maintenance of the infiltration basin to define failure of the
basin to function as designed and the procedures to correct this problem, definition of
when to remove accumulated sediment from the infiltration basin (sediment
benchmark(s) could be added), and inspection and repair of erosion on the grass slope
between the level lip spreader and the pond. The final Agreement shall be approved by
the Northampton DPW 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 22-85 of the Northampton Stormwater Management Ordinance provides
additional guidance for the requirements of the 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. The
previously submitted SWPPP and the Erosion and Sedimentation Control Plan should be
revised as necessary to be consistent with current plans. 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. Construction plans and specifications shall be submitted to the DPW for approval prior to
the start of construction.
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 roadways, the owner shall redesign and
reconstruct the drainage system to prevent any increased stormwater flows to adjacent
properties.
5. All detention basins, infiltration systems, grass swales, outlets, and other non-piped
components of the proposed stormwater system shall be constructed as proposed and
stabilized prior to receiving drainage flows from the proposed development.
M:\Stormwater Management Permits\North Main St_ 421_ VA Roadway & Parking\421 North Main St_Permil.docx
Page 3 of 4
6. A detail has been provided for Stormceptor STC 450i Water Quality Chambers in the
Stormwater Management Report. The Dewberry Plans specify Oil/Water Separators in
various locations but no detail was provided. The detail for the Stormceptor STC 450i, if
that is what is proposed, should be included in revised plans for the project and submitted
to the DPW for approval.
7. Sheet GS-113 of the Dewberry Plans shows the proposed installation of two catch basins
and a 12" RCP flared end outlet at ST A 5+08 on the eastern side of the access road. Due
to limited capacity of the municipal drainage system in North Main Street located
downhill from this discharge, the DPW recommends consideration of revising the routing
of this drainage system to discharge to the western side of the access road to drain to the
pond.
8. The two proposed 24 inch outlet pipes from the infiltration basin discharge to a proposed
level lip spreader. Documentation must be provided to the DPW that the rip-rap in the
level spreader has been sized for the expected velocities.
9. Sheet C-100 shows a proposed antiseep collar in the infiltration berm for the two 24 inch
outlet pipes. A detail of the proposed antiseep collar must be submitted to the DPW for
approval.
10. Sheet C-100 specifies the location of a proposed 20 mil impervious membrane liner in the
detention basin berm. Specification of the type of membrane and how the membrane
panels will be seamed must be submitted to the DPW for approval.
cc. Pl nning Board c/o Office of Planning and Development
uilding Department
tolto ( i3
Date
Conservation Commission c/o Office of Planning and Development
M:\Slormwater Management Permils\North Main SL_ 421_ VA Roadway & Parking\421 North Main SL_Permit.docx
Page 4 of 4