Northampton eDEP documents reduced.pdfNORTHAMPTON: NORTH KING STREET AND EXIT 21
DRAINAGE STRUCTURE MAINTENANCE
INDEX SHEET
# of Sheets
1. WPA Form 3 Notice of Intent 8
2. NOI Wetland Fee Transmittal Form 2
3. Exhibit 1 - U.S.G.S. Map 1
4. Exhibit 2 - Environmental Features Map 1
5. Exhibit 3 - Project Plans 2
6. Exhibit 4 - Project Narrative 3
7. Exhibit 5 - FEMA Map 1
8. Exhibit 6 - Impact Area & Resource Area Photos 2
9. Exhibit 7 - I 91 Plans for Exit 21 2
10. Exhibit 8 - Copy of City Check & DEP Payment number 1
11. Exhibit 9 - Erosion Control Detail 1
12. Exhibit 10 - Previously Approved BVW, Ortho Image 1
Commonwealth of MassachusettsCommonwealth of Massachusetts
Northampton Hatfield
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§¨¦91
§¨¦91Begin Project
End Project
: Drainage along N. King Street & Exit 21 ramps
USGS Map
0 5001,000250 Feet
January, 2015
Exhibit 1
Commonwealth of MassachusettsCommonwealth of Massachusetts
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Northampton Hatfield
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§¨¦91Begin Project
End Project
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91 SB
: Drainage along N. King Street & Exit 21 ramps
Environmental Features Map
0 5001,000250 Feet
January, 2015
Exhibit 2
Legend
$Community Ground Water
$Community Surface Water
$Surface Distribution Site
$Non-Transient Non-Community
$Transient Non-Community
$Proposed Well
[´NHESP 2010 Massachusetts Certified Vernal Pools
.NHESP Potential Vernal PoolsHigh Quality Streams MAQuality
General
High Quality
IWPAs
ZONE IIs
Public Water Supply Contributor
Other ORW
NHESP 2008 Estimated Habitats of Rare Wildlife
NHESP 2008 Priority Habitats of Rare Species
ZONE A
ZONE B
ZONE C
Shoreline
Hydrologic Connection
Mean Low Water Line
Wetland Limit
Closure Line
Marsh/Bog
Wooded marsh
Cranberry Bog
Salt Marsh
Open Water
Reservoir (with PWSID)
Tidal Flats
Beach/Dune
A
AE
AH
AO
V
VE
ANI
X500
D
UNDES
EXISTING
HEADWALL
INV. = 142.6
EXISTING
HEADWALL
INV. = 139.5
EXISTING
HEADWALL
INV. = 140.3
EXISTING
HEADWALLS
INV. = 138.3
INV. = 138.1
A
EXISTING 4' CONCRETE WATERWAY
EXISTING STONE LINED
DRAINAGE DITCH
EXISTING HEADWALL
INV. = 138.9
42" RCP
54" R
C
P
54"
R
C
P
54"
R
C
P
PROP. STONE LINED
CHANNEL CLEANING
AND RESTORATION
BEGINS
PROP. STONE LINED
CHANNEL CLEANING
AND RESTORATION
ENDS
A
B
B
PROP. LIMIT OF
WORK (TYP.)
PROP. LOGGING
MATS FOR ACCESS
PROP.
SHRUB/VINE/PLANT
REMOVAL AREA BEGINS
PROP. INVASIVE
SHRUB/VINE/PLANT
REMOVAL AREA ENDS
RETAIN TREE AND SHRUBS BASED ON
CONDITION DURING CONSTRUCTION
FLOW
FLO
W
L = 116 FT
W
=
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0
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APPROX. LENG
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EXISTING
HEADWALL
EXISTING
HEADWALL
AND PIPE
FLOW
EXISTING
HEADWALL
10.00'10.00'
SEED SIDE SLOPES WITH
EROSION CONTROL AND
RESTORATION SEED MIX
INVASIVE PLANT REMOVAL TYPICAL
SECTION B-B
℄
EXISTING CONCRETE WATERWAY
OR UNLINED STONE DRAINAGE DITCH
NOTES:
1) BRUSH SHALL BE CLEARED TEN (10)
FEET FROM THE CENTERLINE OF THE
EXISTING CONCRETE WATERWAY OR
UNLINED DRAINAGE CHANNEL.
2)BRUSH SHALL BE CUT FLUSH WITH
EXISTING GROUND LEVEL TO MINIMIZE
SOIL DISTURBANCE.LINE CHANNEL BOTTOM
AND SLOPES WITH
GEOTEXTILE FABRIC
NOTES:
1) THE CONTRACTOR WILL BE RESPONSIBLE FOR
CONTROL OF WATER DURING WORK. THE WATER
SHALL BE INTERCEPTED UPSTREAMOF THE WORK
AREA AND BE PUMPED BACK INTO THE DITCH AT A
LOCATION DOWNSTREAM FROM THE WORK. THE
EXCAVATION AND WATER CONTROL SHALL BE DONE
IN THE DRY AND IN A MANNER TO AVOID EROSION
AND SILTATION.
DITCH SHAPING TYPICAL
SECTION A-A
DEPTH VARIES
0' TO 1' (MAX)
1:1
1:
1
2.00'
ROUND TOP TO BLENDROUND TOP TO BLEND
WORK
AREA CHANNEL
FLOW
SAND BAG DAM OR
APPROVED DAM
MATERIAL
EXISTING HEADWALL
PROP. HOSE FOR
WATER CONTROL
PROP. PUMP FOR
WATER CONTROL
WATER CONTROL TYPICAL
NORTHAMPTON CONSTRUCTION PLAN
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SCALE: 1" = 40'
40 160100
FED. AID PROJ. NO.SHEET
NO.
TOTAL
SHEETS
2
STATE
MA
PROJECT FILE NO.
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1
N. KING STREET & EXIT 21 DRAINAGE
STRUCTURE MAINTENANCE
EXISTING HEADWALL
INV.= 145.49
EXISTING
HEADWALL
INV.= 145.67
EXISTING
HEADWALL
INV.= 144.91
EXISTING
HEADWALL
INV.= 144.67
EXISTING PIPE
INV. = 143.307
INV. = 143.305
42" RCP
EXISTING
WALKING PATH
EXISTING CONCRETE SIDEWALK
EXISTING
HEADWALL
INV.= 145.28
EXISTING
HEADWALL
INV.= 145.04
EXISTING
HEADWALL
INV.= 145.79
PROP. 45 CY EXCAVATION
AT INLET
PROP. 2 CY
EXCAVATION AT
INLET AND OUTLET
PROP. 17 CY
EXCAVATION
AT OUTLET PROP.
8 CY EXCAVATION AT INLET
2 CY EXCAVATION AT OUTLETS (X2)
PROP. LOGGING MATS FOR ACCESS
(TYP.)
PROP. 2 CY
EXCAVATION AT
OUTLET
24" RCP
12
"
R
C
P
12
"
R
C
P
12
"
R
C
P
24" RC
P1
2 3
4 5
6
7 8
PROP. LOGGING MATS
FOR ACCESS
EXCAVATE MATERIAL USING
HAND TOOLS AND/OR VIA
PARKING LOT
EXCAVATE MATERIAL
USING HAND TOOLS
EXCAVATE MATERIAL
USING HAND TOOLS
EXISTING
HEADWALL
EXISTING
HEADWALL/PIPE
L = 64 FT
FL
O
W
FL
O
W
L = 40 FT
W =
2
0
F
T
L = 36 FT
W
=
2
0
F
T
W =
2
0
F
T
FLOW
FLOW
FLOW
HEADWALL EXCAVATION TABLE
HEADWALL NUMBER LENGTH (FT)WIDTH (FT)AREA (SF)DEPTH (FT)VOLUME (CF)VOLUME (CY)
1 80 15 1,200 1 1,200 44.44
2 10 5 50 1 50 1.85
3 10 5 50 1 50 1.85
4 30 15 450 1 450 16.67
5 20 10 200 1 200 7.41
6 10 5 50 1 50 1.85
7 10 5 50 1 50 1.85
8 10 5 50 1 50 1.85
NOTES:
1) THE ONLY LOGGING MATS THAT ARE TO BE PLACED
WITHIN THE WETLANDS ARE FOR THE EXCAVATION AT
HEADWALL NUMBER ONE (1).
2)ALL OTHER MATS REQUIRED FOR THE REMAINING
HEADWALLS SHALL BE PLACED OUTSIDE OF THE
WETLAND TO MINIMIZE WETLAND IMPACTS.
NORTHAMPTON BVW IMPACTS TABLE
TEMPORARY AREA (SF)
HEADWALL BVW 2,100
LOGGING MATS 1,280
NORTHAMPTON CONSTRUCTION PLAN
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SCALE: 1" = 40'
40 160100
FED. AID PROJ. NO.SHEET
NO.
TOTAL
SHEETS
2
STATE
MA
PROJECT FILE NO.
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2
N. KING STREET & EXIT 21 DRAINAGE
STRUCTURE MAINTENANCE
Page 1 of 3 02/10/2015
Northampton: North King Street and Exit 21
Drainage Structure Maintenance
PROJECT NARRATIVE
EXHIBIT 4
LOCATION The work included in this Notice of Intent will take place at culverts and headwalls adjacent to North
King Street, and the ramps for Exit 21 off I 91.
Please refer to Exhibit #2 Env. Features Map and Exhibit #1, U.S.G.S. Map.
PROPERTY OWNER(S)
The work will occur within the state highway layout. (See Exhibit #3, Plans):
ABUTTER NOTIFICATION EXEMPTION Massachusetts, Chapter 472 of the Acts of 1993, Section 2, states the notification required by section
one of the Act shall not apply to projects of the “department of highways.”
LIMITED PROJECT STATUS This maintenance project can be classified as a Limited Project under 310 CMR 10.53(3) (f) & (k), see
below.
10.53: General Provisions (3) Notwithstanding the provisions of 310 CMR 10.54 through 10.58 and 10.60, the Issuing
Authority may issue an Order of Conditions and impose such conditions as will contribute to the
interests identified in M.G.L. c. 131, § 40 permitting the following limited projects (although no
such project may be permitted which will have any adverse effect on specified habitat sites of
Rare Species, as identified by procedures established under 310 CMR 10.59). In determining whether to exercise its discretion to approve the limited projects listed in 310 CMR 10.53(3), the
Issuing Authority shall consider the following factors: the magnitude of the alteration and the
significance of the project site to the interests identified in M.G.L. c. 131, § 40, the availability
of reasonable alternatives to the proposed activity, the extent to which adverse impacts are
minimized, and the extent to which mitigation measures, including replication or restoration, are provided to contribute to the protection of the interests identified in M.G.L. c. 131, § 40.
(f) Maintenance and improvement of existing public roadways, but limited to widening less
than a single lane, adding shoulders, correcting substandard intersections, and improving
inadequate drainage systems.
(k) The routine maintenance and repair of road drainage structures including culverts and
catch basins, drainage easements, ditches, watercourses and artificial water conveyances to
insure flow capacities which existed on the effective date of 310 CMR 10.51 through 10.60
(April 1, 1983).
Page 2 of 3 02/10/2015
Northampton: North King Street and Exit 21
Drainage Structure Maintenance
PROJECT NARRATIVE
EXHIBIT 4
DESCRIPTION OF WORK
The proposed project is maintenance of roadway drainage structures, and has been designed as a
minimally invasive approach to restore water flow from several headwalls and culverts. The culverts carry water beneath and away from entrance roads and highway ramps, and various headwalls outlet stormwater from paved areas. The sediment and debris near a dozen headwalls and at the end of
several culverts will be removed. Two areas in the southern portion of the project will have
mechanical invasive species removal along the immediate sides of the channel. The proposed work
does not include any new structures, paving or changes to the highway. To avoid erosion and sedimentation various BMP’s will be used, and work will be scheduled to be completed as expeditiously as possible.
Many of the headwalls, culverts and swales were constructed in the 1950’s and 1960’s, and since then
have been affected by sediment buildup and vegetation. In very recent years there has been standing
water at headwalls and along highway side slopes. The original drainage of N. King Street and the Exit 21 ramps is not flowing to, and out of the headwalls as it was when originally constructed in the 1960’s. The original idea for this drainage project planned to dredge a channel from N. King Street, to
the Exit 21 ramps. The previous design for this project would have resulted in over 40,000 SF of
impacts to wetlands, due to equipment access and the footprint of the channel. The current work
proposed will allow water to flow down from paved surfaces, and it is hoped that the minimalistic approach will restore the historic drainage characteristics.
PROJECT IMPACTS: BVW
There is a large open wetland area north of the Exit 21 ramps, where some of the work will be conducted in and adjacent to. The work in and near BVW has been minimized to the lowest practical impact. The impact locations are at culvert ends, headwalls and where mats will be placed for
equipment access. See Exhibit #3, Plans. All proposed impacts are temporary in nature, and work
areas have clear, open access that will help in expediting the project to completion.
Other Resource Areas & Permitting There are no other impacts proposed in this Notice of Intent.
The project area and adjacent areas do not contain NHESP Habitat or vernal pools, and there are no FEMA flood zones nearby.
Page 3 of 3 02/10/2015
Northampton: North King Street and Exit 21
Drainage Structure Maintenance
PROJECT NARRATIVE
EXHIBIT 4
SEDIMENT AND EROSION CONTROLS:
Various erosion control products and practices will be used during the project. Unlike typical projects
this project consists of many small work areas spread throughout the area, and will not have large areas of disturbance. To minimize the potential for erosion and sedimentation, each work location should be completed and then stabilized before moving to the successive locations. The small and various work
locations can also be scheduled to avoid rainfall events. Erosion controls will include compost mulch
tubes, straw mulch, compost mulch, and erosion control fabrics/netting. See Exhibit 9 Erosion Control
Detail, and the bottom of Plan Sheet #1 Control of Water detail. The use of mats for equipment access will also help to avoid erosion and soil disturbance. Large wood mats placed outside BVW where possible, will be used at a few locations as shown on the Plans, and
will be removed as each work location is completed.
During construction the contractor will regularly inspect erosion controls, will stabilize disturbed areas,
and if needed will remove accumulated sediments. DEWATERING Dewatering may be required in the vicinity of wetland areas, and/or surface or subsurface areas where
surface water or groundwater may exist or accumulate. All dewatering and related work shall be
conducted in such a manner as to prevent siltation or contamination of any adjacent resource area. Pumping discharge shall not be allowed to enter directly or indirectly into any wetland resource area without prior treatment (filter bags, silt sacks, settling basins, etc.
Maintenance and Analysis of Results
Due to the amount of infrastructure in the area, which includes I 91, North King Street, ramps and
roadways, and dozens of drainage structures, the area will be inspected several times over the next two years. MassDOT requests the use of hand tools during inspection, and removal of any eventual sediment deposits that may occur within the next 5 years. MassDOT can provide documentation to the
Conservation Commission if required, to provide details on the status of drainage and needed
maintenance.
All work in resource areas as defined by 310 CMR 10.00 shall be done in accordance with all
environmental permit applications and permits including, but not limited to, the following:
Northampton Conservation Commission – Notice of Intent Northampton Conservation Commission – Orders of Condition Army Corps of Engineers – Mass General Permit
Photos at work locations EXHIBIT 6
Location 2, culvert end within BVW, see bottom right
Location 3, culvert end within BVW, note rusted metal at bottom center
Photos at work locations EXHIBIT 6
Location 4, headwall near entrance road
Location 5, headwall near entrance road, headwalls 6 & 7 outlet to 5
1950’s era Plan of Interstate I 91 at Exit 21 and North King Street
Exit 21 Ramps and southern project area
Exit 21 ramps and north of ramps, note RCCP’s and ditches
Closeup of Ditch cross section & Detail
+
Exhibit 8
Northampton Check & DEP Payment Information
DEP Payment Information
MassDOT provided $237.50 to DEP on or before March 31, 2015, in which DEP
issued the following number:
IE/ITIDOT0821WET15050000 – Northampton