Florence Fields Phase II_Permit_20120112City of Northampton
Department of Public Works
STORMW ATER MANAGEMENT PERMIT
APPLICATION DECISION
Project I Site Name: --"'-F"""'lo=r"""'en=c~e"""F~i=e=ld=s ____________________ _
Project Street or Location I Assessor ID: Spring Street & Meadow Street I 22B-113
Applicant Name: City of Northampton, Recreation Department
Applicant Address/Phone: 90 Locust St, Northampton, MA I 587-1040
Application Submission Date:_1~2~/1~3~/2~0_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.
_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:
a. Florence Recreation Fields -Phase II, Joint NOI I Site Plan Review Plans, Sheets
LO,Ll,L2,L3,L4,L5,L6,L7,L8,L9,Ll0,Lll,Ll2,Ll3,Ll4,Ll5,Ll6,Ll7,
L18, L19, L20, dated December 13, 2011, Stamped by Mark B. Darnold, P.E. and
Peter Hogan, R.L.A., The Berkshire Design Group, Inc.
M:\Stonnwater Program\Stonnwater Pennits Internal\Pennits _new applications\Spring St_ Florence Fields.doc
Page I of4
b. Stormwater Drainage Report for Florence Fields, dated December 13, 2011,
prepared by The Berkshire Design Group, including a Checklist for Stormwater
Report, dated December 13, 2011, stamped by Mark B. Darnold, P.E., The
Berkshire Design Group, Inc.
c. Letter to Sarah La Valley, Conservation, Preservation and Land Use Planner, Re:
Berkshire Design's response to staff and DEP comment: Florence Recreation
Fields, dated January 5, 2012, from Wayne Feiden, Director of Planning and
Development, FAICP, Northampton Office of Planning and Development.
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 storm water 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 1st 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 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 draft Stormwater
Management System Operation & Maintenance Plan submitted as Attachment F to the
M:\Stormwater Prograrn\Stormwater Permits Internal\Permits_new applications\Spring St_Florence Fields.doc
Page 2 of 4
Stormwater Drainage must be revised to the satisfaction of the Northampton DPW
including but not limited to the following items: revision of inspection and maintenance
of the infiltration basin to define at what depth of sediment the basin must be cleaned out
and define failure of the basin to function as designed and the procedures to correct this
problem, maintenance of the proposed stone diaphragm, and management of invasive
plants in the drainage structures. The DPW can provide additional guidance on required
revisions to the maintenance schedule. 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
281-8 of the Northampton Stormwater Management Ordinance as well as the
Massachusetts Stormwater Handbook provide additional guidance for the requirements of
this agreement.
2. This project will be required to submit one or more Notice oflntent (NOI) to the U.S.
EPA for coverage under the NPDES Storm water Construction General Permit. A copy of
the final NOI and Stormwater Pollution Prevention Plan (SWPPP) shall be submitted to
the Northampton DPW for 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 prior to construction
for approval prior to all phases of construction.
4. The proposed plans do not clearly show the detail of the grading and intended flow
direction of drainage of the proposed parking areas. Revised plans that specify spot
elevations for the proposed parking lots shall be submitted to the DPW within 60 days of
the issuance of this permit for review and approval by the DPW. The grading of the
eastern parking area must be specified so that no water will flow over the sidewalk or
onto Meadow Street.
5. DPW does not recommend that water be directed across the parking lot by means of a
swale. A pipe under the parking lot should be considered to channel this water. The DPW
requests that the design engineer submit information analyzing the feasibility of a pipe to
convey (at least up to the 10 year design storm) overflow from the infiltration basin under
the eastern parking lot to an outfall. If such a pipe is feasible, the DPW requests that the
plans be revised to include a piped discharge and submitted to the DPW for review and
approval.
6. Within 60 days of the issuance of this permit, revised plans shall be submitted to the
DPW for review and approval showing the location of the proposed concrete block
armoring and a detail showing the cross section and specifications of the armored swale.
7. 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 City roadways, the owner shall redesign and
reconstruct the drainage system to prevent any increased stormwater flows to adjacent
properties or the municipal storm drain system.
M:\Stormwater Program\Stormwater Permits Internal\Permits_new applications\Spring St_Florence Fields.doc
Page 3 of4
8. The applicant has not provided any details concerning proposed use of fertilizers,
herbicides, and pesticides for the playing fields. The DPW requests that the applicant
strongly consider the use of organic turf management, integrated pest management, and
other techniques to minimize runoff of pollutants in the stormwater discharged offsite or
infiltrated into the ground. The DPW will require additional information regarding
proposed use of fertilizers, herbicides and pesticides for the approved Stormwater
Operation, Maintenance, and Inspection Agreement mentioned above.
9. All infiltration basins, grass swales, outlets, armored swale and other non-piped
components of the proposed storm water system shall be constructed as proposed and
stabilized prior to receiving drainage flows from the proposed development.
10. At least two sediment posts shall be installed in the Infiltration Basin to measure the level
of sediment in the basin. A detail of the sediment posts shall be submitted to the DPW for
approval within 30 days of the issuance of this permit. Construction Plans as referenced
above shall include location and specification of the sediment posts.
cc. Planning Board c/o Office of Planning and Development
Building Department
j I rz.. / 11 __ ~
Conservation Commission c/o Office of Planning and Development
M:\Stormwater Program\Stormwater Permits Intemal\Permits _new applications\Spring St_Florence Fields.doc
Page 4 of 4