814

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STORAGE UNIT/ROUTE 14

DRAINAGE CHANNEL RESTORATION PROJECT

COVER SHEET

VERMONTHARDWICK

5/1/2019

GMB

PCL

5/15/2019

18-072

STORAGE UNIT/ROUTE 14

DRAINAGE CHANNEL RESTORATION PROJECT

TOWN OF HARDWICK, VERMONT

PREPARED FOR:

CALEDONIA COUNTY NATURAL RESOURCES

CONSERVATION DISTRICT

PREPARED BY:

STONE ENVIRONMENTAL, INC.

DRAWING INDEX:

SHEET TITLE

1 COVER SHEET

2 GENERAL NOTES

3 EXISTING CONDITIONS PLAN

4 EROSION PREVENTION & SEDIMENT

CONTROL PLAN & DETAILS

5 PROPOSED CONDITIONS PLAN & PROFILE

6 CHANNEL SECTIONS

7 DETAILS

8 VEGETATION PLAN

Project Vicinity

Scale: 1" = 2000'

Project Location

Scale: 1" = 150'

100% DESIGN

ISSUED: OCTOBER, 2019

FOR PERMITTING PURPOSES ONLY

NOT FOR CONSTRUCTION

DRAWINGS ARE HALF SCALE WHEN PRINTED ON 11X17

DRAWN ON:

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CHECKED BY:

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2

STORAGE UNIT/ROUTE 14

DRAINAGE CHANNEL RESTORATION PROJECT

GENERAL NOTES

VERMONTHARDWICK

5/1/2019

GMB

PCL

5/15/2019

18-072

FOR PERMITTING PURPOSES ONLY

NOT FOR CONSTRUCTION

General Notes:

1. Specifications for design, materials and construction shall meet or exceed the

following:

1.1. VTrans - Vermont Agency of Transportation "Standard Specifications for

Construction", 2018, with current standard plans and supplemental specifications.

1.2. This plan set and all conditions, specifications and supplements to standard

specifications contained within the contract documents.

2. Final resolution to conflicts within the specifications or any substitutions shall be

determined by the Engineer.

3. Utilities:

3.1. The Contractor shall be responsible for determining the location of all utilities prior

to any construction procedure. There are overhead power transmission lines and

other utilities in the immediate vicinity of the project. The Contractor is advised

that extreme caution will be required in the operation of equipment. Contact

DIG-SAFE at 1-888-DIG-SAFE.

3.2. Temporary relocation of utilities, if necessary, during construction is the

responsibility of the Contractor.

3.3. Damage to any utility by the Contractor shall be reported to the utility company.

Repair of the utility shall be paid for by the Contractor.

4. The Contractor shall not disturb any existing property corner, monument, survey

marker, or benchmark without first making provisions for its replacement or relocation.

General Construction Notes:

1. Note that permits have not yet been received for this project, and will be acquired prior

to construction by the Owner's representatives. Work can not proceed until permits are

acquired.

2. See Sheet 4 for notes on the construction sequence for erosion prevention and

sediment control.

3. All items shall be constructed to the dimensions shown on the drawings. Any changes

require approval by the Engineer.

4. The Engineer shall be notified prior to the start of construction.

5. It shall be the Contractor's responsibility to notify the Engineer immediately if problems

or unforeseen circumstances arise during construction.

6. All testing shall be ordered by the Engineer and coordinated by the Contractor in

accordance with VTrans and project specifications. Contractor shall give the Engineer

24 hours advance notice prior to placing materials requiring testing. Testing costs are

subsidiary and shall be included in the item unit price.

7. Determination of maximum densities for sand and gravels are the responsibility of the

Contractor. Proctor tests ordered by the Engineer shall be sampled and performed by

an independent testing laboratory and paid for by the Contractor. Include all costs in

the Item unit price.

8. Areas outside the limits of proposed work disturbed by the Contractor's operations

shall be restored by the Contractor to their original condition at the Contractor's

expense.

9. All soil moving equipment shall be thoroughly cleaned to make it free of soil, non-native

invasive species or other debris that could contain or hold seeds prior to being

delivered to the project site. Equipment shall be considered free of non-native or

invasive species and other such debris when a visual inspection by the Engineer,

completed prior to the equipment being moved to the site, does not disclose such

material present. A current list of non-native invasive species of concern is provided in

the contract documents.

10. Where relevant, topsoil shall be stripped and stockpiled to be used to restore disturbed

areas.

11. The color of stone used for channel restoration shall be either earth tones or medium to

dark gray and shall be approved by the Engineer prior to placement.

12. Suitable excavated material used for channel restoration shall consist of an inert

material that is hard, durable stone and coarse sand free from loam, clay, surface

coatings and deleterious materials, and shall meet the gradation requirements in the

notes titled "Channel Bed Construction Notes" on sheet 7 and must be approved by the

Engineer prior to placement.

13. The Contractor is responsible for providing any required traffic control including, but not

limited to, jersey barriers, or other barricades, signage and flaggers. All work shall be

performed from Bessette Storage property; work in along Route 14 or the within the

Route 14 shoulder is not permitted.

14. Contractor shall protect existing facilities and utility lines from all damage. Noted

and/or observable subsurface improvements such as utilities, water lines, and culverts

shall be avoided and repaired and/or replaced as needed. Repair of unforeseen

subsurface improvements will be negotiated.

15. Job-site safety conditions, including but not limited to, mobilization/demobilization,

excavation, stockpiling, material placement and culvert installation, shall be the

Contractor's responsibility.

16. Legally dispose of excess material off site.

17. Control dust with water as needed.

18. Basic construction standards for storage of materials, safety protection, protection of

neighboring properties, and reclamation of disturbed areas shall be followed. All

landscaping must be returned to the original condition or as modified per these plans.

19. Contractor shall construct appropriate fences and barriers around all construction sites,

storage sites, and excavations to safe guard the public from the construction site.

20. Details shown on any drawings are to be considered typical for all similar conditions,

unless otherwise noted.

Design Data:

1. Channel data used for 100% design (W.S. Elevations are from the project HEC-RAS

model at Station 2+25):

Storm Event Peak Flow (CFS) W.S. Elevation (feet)

2 Year 2.3 811.7

10 Year 25.3 812.4

50 Year 72.4 814.2

100 Year 98.1 814.6

2. Drainage area = 101 acres (0.16 mi

2

)

3. Channel bankfull width = ~6 feet

4. Channel bankfull depth = ~0.5-1 feet

5. Channel slope = 0.70%

Channel Reconstruction Notes:

1. Item 613.0001 - Channel Bed Material - Suitable excavated material used for

construction of stream bed shall meet the gradation requirements in the notes titled

"Channel Bed Construction Notes" on sheet 7 and must be approved by the Engineer

prior to placement. When suitable excavated material is not available for stream bed

construction the contractor shall source a material meeting the gradations in that table.

2. Item 613.0002 - Bank Rock - Suitable excavated material used for construction of

banks shall meet the gradation requirements in the notes titled "Channel Bed

Construction Notes" on sheet 7 and must be approved by the Engineer prior to

placement. When suitable excavated material is not available for bank construction the

contractor shall source a material meeting the gradations in that table. Bank rocks

shall be placed at the direction of the Engineer. Excavation required for placement of

bank rocks shall be paid for incidental to this item.

3. Item 613.0003 - Rock Steps - Suitable excavated material used for construction of

steps shall meet the gradation requirements in the notes titled "Channel Bed

Construction Notes" on sheet 7 and must be approved by the Engineer prior to

placement. When suitable excavated material is not available for step construction the

contractor shall source a material meeting the gradations in that table. Rock steps

shall be placed at the direction of the Engineer. Excavation required for placement of

rock steps shall be paid for incidental to this item.

4. Item 613.0004 - Boulder Clusters - Boulder clusters shall be placed at the direction of

the Engineer and shall be sized per the detail 'Typical Boulder Cluster' on Sheet 7.

5. Floodplain areas shall be constructed by removing and stockpiling topsoil, scarifying

native, inorganic soil, and then placing and compacting suitable excavated or imported

material in 8-inch lifts. See notes on Sheet 8 for additional details on floodplain

construction and seeding.

General Construction Notes (Continued):

21. Prior to beginning construction the following people shall be notified:

A. Dig-Safe

B. Caledonia County Natural Resources Conservation District

C. Site Owner

D. Project Engineer

E. Town of Hardwick

If work is delayed for a significant period, the same people shall be contacted again

prior to restart.

22. Investigate above surface site conditions prior to beginning work. Disturbed and

damaged property must be replaced and/or repaired to the satisfaction of the Owner,

Town and Engineer.

23. All excavation and backfilling shall be completed as soon as possible. Open

trenches shall be properly barricaded and warned for pedestrians and vehicles.

24. Granular backfill for structures shall consist of satisfactorily graded, free draining

granular material reasonably free from loam, silt, clay and organic material in

accordance with Section 704.08 of the VT Agency of Transportation Standard

Specifications for Construction.

Shop Drawing Approval Process:

1. The following process will be followed regarding the submission and approval of shop

drawings.

1.a. Contractor submits shop drawing to Engineer for review and comment.

1.b. Following review, the Engineer sends comments back to the Contractor.

1.c. Contractor submits revised shop drawings (if necessary) to Engineer; Engineer

ensures comments are incorporated into the revised shop drawings.

1.d. If comments are addressed appropriately, Engineer will provide shop drawing

approval stamp, distribute copies to applicable parties, and store approved

documents in project files.

1.e. If comments are not addressed, repeat steps 1a through 1c.

2. Engineer review and approval does not relieve the Contractor of full responsibility for

any negligence in the construction of the project resulting from shop drawings.

Engineer review and approval of shop drawings is not a warranty of the adequacy and

correctness of shop drawings; the Contractor is responsible for the correctness of shop

drawings and all associated calculations.

Pipe Work Notes:

1. The contractor shall make provisions for maintaining flow through existing force

mains, sewer lines, water lines, storm drains and channels which must be interrupted

during the work. Once work is complete, all flows shall be restored and temporary

flow diversions and associated piping shall be removed from the site.

2. The contractor is required to manage any groundwater encountered and maintain

stable slopes during excavation.

3. Existing water mains are under pressure. Contractor is advised to take precautions

while excavating around existing infrastructure. Temporary sheeting and/or bracing

may be required.

4. The contractor shall install mechanical plugs in the end of all pipe work at the

completion of each work day to seal it from water and soil.

DRAWINGS ARE HALF SCALE WHEN PRINTED ON 11X17

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3

STORAGE UNIT/ROUTE 14

DRAINAGE CHANNEL RESTORATION PROJECT

EXISTING CONDITIONS PLAN

VERMONTHARDWICK

5/1/2019

GMB

PCL

5/15/2019

18-072

Survey Notes:

1. Horizontal coordinates refer to Vermont State Plane, Feet.

2. Contour interval = 1 foot. The vertical datum refers to NAVD88. Contours were created

using two sources of data: 1) a topographic survey of the channel bed, banks,

floodplains and structural features collected by Stone Environmental (see Note 3

below), and 2) LiDAR data of all upland features, obtained from the Vermont Center for

Geographic Information.

3. Site survey was performed on November 15, 2018 by the following personnel:

Branden Martin, EI and Serena Matt of Stone Environmental, Inc. using a Geomax

Zoom 30 Total Station.

4. Survey data provided in these plans do not represent a boundary survey.

5. Utility locations shown on this plan should be considered approximate. Contractor is

required to verify utility locations prior to work.

6. River corridor extents, 100 year flood extents and VSWI wetlands obtained from VCGI.

FOR PERMITTING PURPOSES ONLY

NOT FOR CONSTRUCTION

Legend

Major Contour

Minor Contour

Vegetation Line

Edge of Pavement

Site Plan

Scale: 1" = 30'

Existing River Top of Bank

Point # Description Northing Easting Elevation

1 Rebar 3" From Grade 727902.9419' 1673786.0090' 811.50'

2 Building Corner 728026.1992' 1673761.7646' 816.60'

3 Manhole Rim 728318.7640' 1673875.3300' 817.18'

Point Table

Survey Control Point

ft

m

0

0

1 inch = feet

( 1 : )

DRAWINGS ARE HALF SCALE WHEN PRINTED ON 11x17

6 15 30

30 30 60 120

30

360

Existing Drainage Channel

Top of Bank

VTrans Right-of-Way Boundary

Existing Vegetation

Existing Sanitary Manhole

Existing Catch Basin

Existing Storm Drain

Parcel Boundaries

09029-00070

(Parcel #28208910119)

BETTY BENWAY

15 Benway Dr.

Hardwick, VT, 05843

23089-00000

(Parcel #28208911378)

ELLEN PLATKA

PO Box 98

East Hardwick, VT, 05836

09029-00060

(Parcel #28208910562)

STEVEN FERLAND

57 South Main St.

Hardwick, VT, 05843

09028-00000

(Parcel #28208910416)

ROBERT DRAGON

65 VT RT 14 S

Hardwick, VT, 05843

09029-00050

(Parcel #28208911580)

WINSTON JENNISON INVESTMENT LLC

1754 Plot Rd 1

Johnson, VT, 05656

09026-00040

(Parcel #28208910421)

WILLIAM DRISCOLL

36 Nanel Dr.

Glastonberry, CT 06033

09026-00020

(Parcel #28208910136)

17 ROUTE 14 SOUTH LLC

PO Box 1250

Hardwick, VT, 05843

VTANR River Corridor Extents

FEMA 100 Year Flood Extents

Base Flood Elev. = 816'

VSWI Wetlands

Trace of 816' Elevation

Existing Overhead Utility

Existing Utility Pole

814

813

815

8

1

5

8

1

4

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STORAGE UNIT/ROUTE 14

DRAINAGE CHANNEL RESTORATION PROJECT

EROSION PREV. & SEDIMENT CONTROL PLAN & DETAILS

VERMONTHARDWICK

5/1/2019

GMB

PCL

5/15/2019

18-072

FOR PERMITTING PURPOSES ONLY

NOT FOR CONSTRUCTION

Legend

Major Contour

Minor Contour

Vegetation Line

Edge of Pavement

Site Plan

Scale: 1" = 30'

Existing River Top of Bank

Survey Control Point

ft

m

0

0

1 inch = feet

( 1 : )

DRAWINGS ARE HALF SCALE WHEN PRINTED ON 11x17

6 15 30

30 30 60 120

30

360

Existing Drainage Channel

Top of Bank

VTrans Right-of-Way Boundary

Existing Vegetation

Existing Sanitary Manhole

Existing Utility Pole

Existing Storm Drain

Parcel Boundaries

Temporary Cofferdam - Sand Bag Option

NTS

Sedimentation Basin Detail

NTS

Silt Fence

NTS

Proposed Site Access Route

Temporary Material Storage

Proposed Silt Fence

General Construction and Wetland Restoration Sequence:

1. This recommended construction sequence is for the construction of a forebay;

restoration of the drainage channel including construction of the stream channel, its

banks and floodplains; and replacement of the culvert discharging to Cooper Brook.

This construction sequence assumes that work will progress from upstream to

downstream, during summer low-flow conditions. Alternate construction sequences

recommended by the Contractor may be submitted for consideration by the Engineer.

Construction Sequence:

The VT DEC requires that the following steps be taken in order to minimize the erosion of

soil and transport of sediment within the limits of work during construction. These

measures are integral to the successful restoration of the project site.

1. Install erosion and sediment control measures prior to any earth moving activity that

will influence or affect stormwater runoff.

2. Clear areas only as needed to meet the requirements of the specific

restoration/construction task to be completed.

3. Implement Water Control Plan measures:

3.1. Install temporary sandbags in manhole over inlet pipe at storage facility entrance,

or at upstream pipe inlet. Install pump at sandbag location and connect to bypass

flow pipe, and route pipe to Cooper Brook as shown on this sheet. Bury pipe where

needed (at minimum in road at storage facility entrance) to protect pipe and ensure

positive slope along the conveyance.

3.2. Mobilize equipment and construct forebay, channel, floodplains and replace culvert

in dry conditions per Sheets 5, 6 and 7. Utilize dewatering sump when and where

needed, to maintain dry conditions. Place discharge end of dewatering pipe at

minimum 20' from edge of wetland or brook. If infeasible, direct dewater flows to

sedimentation basin. See details this sheet regarding sedimentation basin.

3.3. Once all earth moving activity is complete, remove the sandbags and bypass flow

pipe, and sedimentation basin if applicable.

4. Restore temporarily impacted areas. In wetland areas to be restored, regrade area to

original surface or as shown on plan and scarify surface to prepare for loam, seed,

erosion control fabric and plantings.

5. Place loam, seed and fabric along disturbed upland areas, along with plantings. See

Sheet 8 for details.

6. Once all contributing upslope areas have been permanently stabilized and vegetated,

remove trapped sediment from behind all silt fence and other temporary sediment

control devices. Remove all temporary sediment control devices.

7. Ultimately, the construction sequence details are to be determined by the Contractor

and must be approved by the Engineer prior to beginning work.

Water Control Plan Notes

1. The suggested Water Control Plan in sequencing notes above (Steps 3.1 through 3.3)

is an example and for the purposes of project bidding.

2. The Contractor shall submit a Water Control Plan (Plan) for approval by the Engineer

prior to mobilization. The plan can follow Steps 3.1 through 3.3, or the Contractor may

submit an alternate Plan. Overall, the Plan will be the Contractor's plan that meets all

permit requirements and is subject to approval by the Engineer. See specifications.

3. All permits relevant to the Plan are/will be located in the construction documents.

4. The contractor will monitor the weather, rainfall and storm warnings issued by the

National Weather Service throughout the project and will remove all equipment and

materials that may be affected by flood flows that are conveyed to the drainage

channel, and flows from Cooper Brook.

Summary of Impacts

Limits of Permanent Impact

(11,772 Total SF)

Temporary Impacts

(2,600 Total SF)

Proposed Channel

Proposed Floodplain Benches

Proposed Sloped Bank

INSTALL SANDBAG

COFFERDAM IN 1)

MANHOLE OR 2)

UPSTREAM INLET,

TO PREVENT

FLOW INTO

CHANNEL

DEWATERING SUMP

(VERTICAL PERFORATED PIPE W/PUMP)

IN GRAVEL BED, PLACED WHEN/WHERE

NEEDED TO MAINTAIN DRY CONDITIONS

DISCHARGE POINT IN UPLANDS, SET

BACK MIN. 50' FROM WETLANDS OR

STREAM LIMITS AND FILTERED VIA

NATURAL VEGETATION, OR WITH

SEDIMENTATION BASIN, SEE DETAIL

THIS SHEET

530 LF PIPE OR HOSE CONVEYING

PUMPED BYPASS FLOWS TO

COOPER BROOK

BURY PIPE IN EXCAVATED

TRENCH IN ROAD TO PROTECT

PIPE DURING OPERATIONS

MAINTAIN POSITIVE SLOPE

BYPASS FLOW

DISCHARGE POINT TO

COOPER BROOK

PROPOSED FOREBAY (70 LF)

AND ROCK STEP

SEE DETAILS SHEET 7

TEMPORARY STORAGE

AREA (2,600 SF)

VTANR River Corridor Extents

FEMA 100 Year Flood Extents

(Base Flood Elev. = 816')

VSWI Wetlands

Trace of 816' Elevation

Limits of Disturbance

PROPOSED CHANNEL AND

FLOODPLAIN BENCHES (TYP.)

338 LF TOTAL, FROM FOREBAY

DISCHARGE TO CULVERT INLET

T

E

M

P

O

R

A

R

Y

S

T

O

R

A

G

E

A

R

E

A

(2

,3

0

0

S

F

)

E

Q

U

IP

M

E

N

T

S

T

O

R

A

G

E

A

R

E

A

(3

,1

0

0

S

F

)

Existing Overhead Utility

Existing Catch Basin

PROPOSED 5' X 3.2'

ELLIPTICAL CONCRETE

PIPE, 30 LF

8

1

4

8

1

3

815

8

1

5

8

1

4

~1.5' DEEP

POOL

STONE WEIR

ELEV. 814.30'

SEE DETAIL SHEET 7

FINISHED GRADE AT

CHANNEL THALWEG

S=0.70%

PROPOSED

70 LF FOREBAY

S=0.00%

SEE DETAIL SHEET 7

EXISTING CULVERT TO

BE REPLACED WITH

5' WIDE X 3.2' HIGH X 30'

LONG ELLIPTICAL

CONCRETE PIPE

INV. IN = 810.35'

INV. OUT = 810.05'

ELEVATIONS AT

START/END OF

FOREBAY = 812.55

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STORAGE UNIT/ROUTE 14

DRAINAGE CHANNEL RESTORATION PROJECT

PROPOSED CONDITIONS PLAN & PROFILE

VERMONTHARDWICK

5/1/2019

GMB

PCL

5/15/2019

18-072

FOR PERMITTING PURPOSES ONLY

NOT FOR CONSTRUCTION

Site Plan

Scale: 1" = 20'

ft

m

0

0

1 inch = feet

( 1 : )

DRAWINGS ARE HALF SCALE WHEN PRINTED ON 11x17

4 10 20

20 20 40 80

20

240

PROPOSED FOREBAY (70 LF)

AND ROCK STEP

SEE DETAILS SHEET 7

PROPOSED 5' X 3.2'

ELLIPTICAL CONCRETE

PIPE, 30 LF

PROPOSED CHANNEL AND

FLOODPLAIN BENCHES (TYP.)

338 LF TOTAL, FROM FOREBAY

DISCHARGE TO CULVERT INLET

Existing and Proposed Longitudinal Profile

Horizontal Scale: 1" = 20'

Vertical Scale: 1" = 2'

Existing Channel Thalweg

Legend

Proposed Channel Thalweg

Legend

Major Contour

Minor Contour

Vegetation Line

Edge of Pavement

Existing River Top of Bank

Survey Control Point

Existing Drainage Channel

Top of Bank

VTrans Right-of-Way Boundary

Existing Vegetation

Existing Sanitary Manhole

Existing Storm Drain

Parcel Boundaries

Proposed Channel

Proposed Floodplain Benches

Proposed Sloped Bank

Limits of Disturbance

Existing Overhead Utility

Existing Catch Basin

Existing Utility Pole

CHANNEL + FLOODPLAIN BENCHES = 14'

BANKFULL WIDTH = 6'

BOTTOM WIDTH ~4.7'

S=2:1 NEAR

RT. 14

TIE-IN TO

EXISTING

GRADE

1

HIGH FLOW

LOW FLOW

5% (T

YP

.)

1

1

1

5% (TY

P.)

S=3:1 NEAR BESSETTE

STORAGE TIE-IN TO

EXISTING GRADE

~0.5-1'

FINAL THALWEG AND TOP

OF BANK ELEVATIONS

SEE TABLE THIS SHEET

PLACE BANK MATERIALS (TYP.)

(WOOD OR STONE)

IMBED 5-6" IN BED MATERIAL

PLACE 6" CHANNEL BED

MATERIAL, SEE TABLE

SHEET 7 FOR GRADATION

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STORAGE UNIT/ROUTE 14

DRAINAGE CHANNEL RESTORATION PROJECT

CHANNEL SECTIONS

VERMONTHARDWICK

5/1/2019

GMB

PCL

5/15/2019

18-072

BEGIN ROUTE 14

EDGE OF ROAD

(STATION 14.2)

~14' (TYP.)

ROUTE 14

ROUTE 14

ROUTE 14

ROUTE 14

ROUTE 14

ROUTE 14

ROUTE 14

BEGIN ROUTE 14

EDGE OF ROAD

(STATION 17.5)

BEGIN ROUTE 14

EDGE OF ROAD

(STATION 19.5)

BEGIN ROUTE 14

EDGE OF ROAD

(STATION 14.7)

BEGIN ROUTE 14

EDGE OF ROAD

(STATION 21.0)

BEGIN ROUTE 14

EDGE OF ROAD

(STATION 14.5)

BEGIN ROUTE 14

EDGE OF ROAD

(STATION 13.6)

3:1

2:1

3:1

2:1

3:1

2:1

3:1

2:1

3:1

2:1

PROPOSED 5' WIDE X 3.2' HIGH

CONCRETE ELLIPTICAL PIPE

INSTALL 6-12" CRUSHED STONE FOR

PIPE FOUNDATION, ITEM 156.1

PROPOSED GRADING

OVER PIPE (MAINTAIN

1' COVER OVER PIPE)

Station Thalweg Top Bank

0+75 807.65 -

1+50 810.70 811.60

2+25 811.30 812.20

3+00 811.80 812.70

3+75 812.30 813.20

4+50 811.00 813.40

Final Elevations Table

Existing Grade

Final Grade

Channel Section Notes:

1. Orientation of sections is looking downstream; river left (adjacent to the highway) is

represented by positive station numbers, river right is represented by negative station

numbers.

Legend

RESTORED CHANNEL (TYP.)FLOODPLAIN BENCH (TYP.)

SEE DETAIL SHEET 7

REGARDING CONSTRUCTION

OF FOREBAY AND BANKS

ft

m

0

0

1 inch = feet

( 1 : )

DRAWINGS ARE HALF SCALE WHEN PRINTED ON 11x17

1 2.5 5

5 5 10 20

5

60

Typical Channel Cross Section

Scale: 1" = 2'

FOR PERMITTING PURPOSES ONLY

NOT FOR CONSTRUCTION

Typical Channel Cross Section Notes:

1. See planting plan on Sheet 8 for details regarding vegetation species and coverage.

2. Approximately 50% of channel banks to be constructed using wood logs and 50% of

channel banks to be constructed using stone. See table on Sheet 7 for sizing of log

and stone bank material.

1

1

1

1

5% (T

YP

.)

EXCAVATE BANKS TO CREATE

FOREBAY WALLS

PLACE FABRIC FOLLOWED BY

COBBLE AND SMALL BOULDERS,

THEN LARGE BOULDERS

SEE TABLE THIS SHEET FOR

GRADATIONS

DEPTHS VARY

SEE TABLE

THIS SHEET

FINAL THALWEG AND TOP

OF BANK ELEVATIONS

SEE TABLE THIS SHEET

IMBED BOTTOM

BOULDERS 9-12" BELOW

BOTTOM ELEVATION OF

FOREBAY

CHANNEL + FLOODPLAIN BENCHES = 14'

BANKFULL WIDTH = 6'

BOTTOM

WIDTH

~2.0'

S=2:1 NEAR

RT. 14

TIE-IN TO

EXISTING

GRADE

S=3:1 NEAR BESSETTE

STORAGE TIE-IN TO

EXISTING GRADE

INSTALL 6" GRANITE SLAB

SECTIONS ALONG

BOTTOM OF FOREBAY

(TYP.)

TO SERVE AS GUIDE FOR

SEDIMENT EXCAVATION

DRAWN ON:

DRAWN BY:

CHECKED BY:

CHECKED ON:

DRAW

IN

G CRED

ITS

REVISIO

NS

PROJECT NO:

# DATE DRWN CHK'D APP'D DESCRIPTION

DRAW

IN

G SCALE

FILE:

FIG

URE N

O.

7

STORAGE UNIT/ROUTE 14

DRAINAGE CHANNEL RESTORATION PROJECT

DETAILS

VERMONTHARDWICK

5/1/2019

GMB

PCL

5/15/2019

18-072

FOR PERMITTING PURPOSES ONLY

NOT FOR CONSTRUCTION

Forebay - Typical Section

Scale:

1

4

" = 1'-0"

Channel Bed Construction Notes:

1. Fill placed to establish finished streambed grades shall be a mixture of sand, gravels,

cobbles and large cobbles similar to natural streambed gradations in adjacent streams,

as follows:

Stone Size (inches) % Finer Then Size Range

6" 100 4"-6"

4" 95 3"-4"

3" 84 2"-3"

2" 50 1"-2"

1" 30 <3/4"-1"

<3/4" 15 Sand-3/4"

2. 3/4" minus class shall be well graded with approximately 5% of the total bed mix as

sand.

3. Fill placed to construct steps, pools and banks (forebay and stream channel) shall be

small to medium sized boulders ranging from 16" - 20" in diameter along the

intermediate axis.

4. Fill placed to construct roughness features (boulder clusters) shall be small to medium

sized boulders ranging from 12" - 16" in diameter along the intermediate axis.

5. All fill placed within the channel limits shall be sub-rounded, rounded or well-rounded

river stone.

Rock Step at Forebay Discharge - Typical Section

Scale:

1

4

" = 1'-0"

Rock Step at Forebay Discharge - Plan View

Scale: NTS

Typical Boulder Cluster

Scale:

1

4

" = 1'-0"

Station Thalweg Top Bank Notes

4+70 812.55 813.45 Begin Forebay

4+50 811.00 813.40 Forebay Max Pool

4+00 812.55 813.30 End Forebay

Final Elevations Table - Forebay

DRAWINGS ARE HALF SCALE WHEN PRINTED ON 11X17

4" FOR 12"-24" PIPE

6" FOR 30"-60" PIPE

6"

GRANULAR BACKFILL FOR STRUCTURES

VTRANS ITEM 704.08

SUITABLE

FOUNDATION

SUITABLE BACKFILL TO BE

COMPACTED IN 9" LIFTS TO A

DENSITY OF 95% OF THE MAXIMUM

DRY DENSITY USING STANDARD

PROCTOR TEST, METHOD A,

ACCORDING TO ASTM D698

MIN. TRENCH WIDTH

(6" OUTSIDE PIPE WIDTH)

GRANULAR BACKFILL FOR STRUCTURES

VTRANS ITEM 704.08

Typical Pipe Trench Detail

NTS

8

1

4

8

1

3

815

12"

12" MIN.

12" MIN.

DRAWN ON:

DRAWN BY:

CHECKED BY:

CHECKED ON:

DRAW

IN

G CRED

ITS

REVISIO

NS

PROJECT NO:

# DATE DRWN CHK'D APP'D DESCRIPTION

DRAW

IN

G SCALE

FILE:

FIG

URE N

O.

8

STORAGE UNIT/ROUTE 14

DRAINAGE CHANNEL RESTORATION PROJECT

VEGETATION PLAN

VERMONTHARDWICK

5/1/2019

GMB

PCL

5/15/2019

18-072

FOR PERMITTING PURPOSES ONLY

NOT FOR CONSTRUCTION

Vegetation Plan

Scale: 1" = 10'

ft

m

0

0

1 inch = feet

( 1 : )

DRAWINGS ARE HALF SCALE WHEN PRINTED ON 11x17

2 5 10

10 10 20 40

10

120

PROPOSED FOREBAY AND

STONE WEIR

PROPOSED CHANNEL

AND FLOODPLAIN

BENCHES (TYP.)

Vegetation Plan Notes:

1. Contractor to install loam, seed and erosion control fabric along floodplains, sloped

banks and other disturbed areas according to details on this sheet and standard

VTrans practices.

2. Seed mix shall be New England Wetmix by New England Wetland Plants, Inc. or

equivalent, applied at an application rate of 18 lbs/acre or per seed manufacturer's

requirements.

3. Plants shall be placed in ~10' grid spacing throughout Planting Zones 1 and 2, and as

directed by the Engineer.

Legend

Major Contour

Minor Contour

Edge of Pavement

Existing Drainage Channel

Top of Bank

Existing Vegetation

Existing Utility Pole

Parcel Boundaries

Proposed Channel

Proposed Floodplain Benches

Proposed Sloped Bank

Scientific Name Common Name Type Total Plants

Asclepias incarnata Swamp milkweed Herb 25

Caltha palustris Marsh marigold Herb 25

Iris versicolor Blue flag iris Herb 25

Schoenoplectus pungens Three-square bulrush Herb 25

Verbena hastata Blue vervain Herb 25

Aster puniceus Swamp aster Herb 25

Matteuccia streuthiopteris Ostrich fern Fern 25

Spiraea latifolia Meadowsweet Shrub 20

Spiraea tomentosa Steeplebush Shrub 20

Planting Table

PLANTING ZONE 1 (TYP.)

FLOODPLAINS

2,412 SF Total

PLANTING ZONE 2 (TYP.)

SLOPES

2,382 SF Total

Erosion Control Fabric

NTS

Existing Overhead Utility

PROPOSED 5' WIDE X 3.2' HIGH

CONCRETE ELLIPTICAL PIPE