E s s e x C o u n t y N a t u r a l R e s o u r c e s C o...

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Prepared By: Sarah Damsell Essex County NRCD Manger December 8, 2014 2015 Town of Concord Better Back Roads Category A Road Erosion Inventory and Capital Budget Report Essex County Natural Resources Conservation District

Transcript of E s s e x C o u n t y N a t u r a l R e s o u r c e s C o...

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Prepared By:

Sarah Damsell Essex County NRCD Manger

December 8, 2014

2015 Town of Concord

Better Back Roads Category A

Road Erosion Inventory and Capital Budget Report

E s s e x C o u n t y

N a t u r a l R e s o u r c e s C o n s e r v a t i o n D i s t r i c t

…creating local solutions for natural resource concerns…

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Table of Contents BBR Category A Report

Town of Concord

Better Back Roads Category A

Road Erosion Inventory and Capital Budget Report

Project Introduction 2-3

Summary of Priority Sites

Site 1: Long Hill Road 4-6

Site 2: LeClair Road 7-8

Site 3: Johnson Rd____________________________________________________________ ____ 9-10

Site 4: Micah Baker Rd 11-12

Site 5: Prospect Rd 13-14

Site 6: Shadow Lake Rd 15-16

Site 7: Bullard Rd_____________________________________________________________ ____ 17-18

Site 8: Beede Rd 19-20

Site 9: South St/Royalston Rd 21-22

Site 10: Willson Rd___ 23-24

Site 11: Kirby Mountain Rd 25-26

Summary of other sites evaluated___________________ 26

Town of Concord Soils and Water Maps

Copy of the VT Better Back Roads Manual

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Project Introduction BBR Category A Report

Objective:

The completion of this road erosion and structures inventory for the town of Concord, VT suits the mission of the Essex

County Natural Resources Conservation District (ECNRCD) to sustain and protect the vast and varied natural resources of

Essex County. The districts main objective was to work with the town to accomplish this inventory effort; build working

relationships around this topic; raise awareness of road related water quality issues; and to provide the town with a

comprehensive practical report listing priority road sites with water quality issues in need of the town’s attention including

estimated costs and effective solutions for the prioritized sites.

In general this effort is meant to facilitate the enhancement of general maintenance and working practices on town gravel

roads while improving local water quality. This is done by first understanding road erosion and then addressing issues with

effective control practices. Soil vegetative cover, velocity of runoff and soil properties influence the amount of erosion in an

area and are what can be controlled. Erosion occurs when exposed soils on road, in the ditches and banks with hilly

topography receive rapid water velocities mainly during storm runoff events carrying away sediment particles. Soil sediment

textures influence erodiblity, the town of Concords soils are for the partly made up of glacial till with origins from the mostly

granitic and some metamorphic parent material- sandy, stony and loamy soils. These relatively large particle soils tend to drain

quicker reducing their erosion susceptibility but with likely low soil organic matter and compaction issues these soils are still

vulnerable to erosion. There are also areas in the low laying topography with poorly drained silty loam dominant dense glacial

till soils with poor drainage and higher erodablity. Please refer to the included maps which are meant to introduce town

decision makers to some of the town’s natural resources characteristics.

This is a water quality issue once these sediments reach surface waters and have the potential to affect the water

chemistry/nutrient balance and aquatic habitat. The public needs the help of towns to protect the quality of Vermont’s

waterways by assuring their necessary and important work also prevents eroded sediments from making their way to streams,

rivers and lakes. This inventory report is meant to assist the town in this effort by servicing as a working document to be

utilized as a guide and a tool that should be updated over time. The ECNRCD is available for assisting in any updates, future

inventories and offers grant project promotion in both administrative and implementation capacities.

Description of Project:

Essex County Natural Resources Conservation District staff worked with the town officials- mainly the town road foreman-,

VTrans district 7 manager and VTDEC watershed coordinator to conduct a road erosion and structures inventory. Field

inventories were centered on town priorities based on the town’s road foreman’s recollections of maintenance priorities and

problem areas that have continual problems associated with spring runoff and summer storms; as well as medium & high

ranked areas of the VTDEC Road Erosion Risk Analysis mapping data. These town concerns and mapping data analysis areas

generally overlapped.

The town of Concord, VT has a total of 65 miles of roads of that, 55 miles, are class 3 roads. The town has adopted the new

state codes and standards, is interested in trying some new erosion control techniques and overall seems to be doing a good job

with condition and maintenance of the road system. Including continuing to work toward meeting the principles of getting

water off the roads as soon as possible- proper road crowing, preventing water from running lengthen wise down the road-

stabilizing and vegetating disturbed areas as soon as possible, diverting water to vegetative areas away from surface waters,

installing stoned lined ditches, and having good regular maintenance. These standards and other management practices, such

as proper grading to avoid creating a ridge between the crown and ditch, removing any berms created, vegetating ditches after

maintenance and maintaining vegetation should continue to be improved upon and accepted as general town operating

practices. The town might also want to consider completing a town highway and infrastructure study.

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After major flood damage in 2011 resulting in FEMA and state funded projects town officials understand that these standards

well serve their short and long term management. In addition there is an understanding of the importance of maintaining clean

waterways while implementing annual maintenance and larger capital projects. While there have been a few structural projects

implemented in the past few years Better Back Roads grants have not been utilized in the town. The town doesn’t have a

completed town highway and infrastructure study nor do they conduct and document broad based inventories.

A total of twenty-four sites were assessed as well as private roads located around Miles Pond, which is known to be stressed

due to sedimentation and has increased nutrient trends based on lay spring phosphorous sampling. This inventory represents

observations seen in dry conditions and after rain storms. Being that this inventory was conducted on targeted sites based on

VTDEC mapping analysis and town priorities this report hasn’t captured all of the potential issues in the town’s road network.

After considering site assessments and evaluation based on water quality impacts and scope of the project feasibility ECNRCD

and town staff prioritized 11 sites which are listed below in order of water quality protection priority but it will be up the town

of Concord to determine the priorities for project implementation. Best management practices installations were considered

for these priority sites, materials list and estimated budgets where put together and potential funding amounts from grant

sources at 80% and town capital budget at 20% were estimated. All sites would qualify for Better Back Roads Category B

grants besides the Wilson Rd and Prospect Rd culverts which would qualify for VTAOT Town highway structures grant.

The following pages of this report include information for each of these sites. These site descriptions are intended to be used

and/or contribute to future implementation grant proposals. Write ups include a map and pictures of location, a site

description of each location, the erosion water quality issue, recommended treatment with construction notes referring to state

technical documents to be used during further construction planning, estimated cost of construction and for most sites an

example of conceptual drawings, copied from the VT Better Back Road Manual, of proposed treatment.

*Potential grant sources the town should be aware of: VTAOT Transportation Alternatives, VTDEC Ecosystem Restoration Program, VT Fish and Wildlife

State Wildlife grant (culvert replacement), VTAOT Town Bridge, Structures and Highway programs, and VT Better Back Roads Category B grant

Project Introduction BBR Category A Report

Town of Concord Potential Future Projects

Site Location General Description Estimated

Total Cost

Estimated Grant Funds

Estimated Town Capital Budget Funding

1 Long Hill Rd Improve ditch dimensions, install cross

culvert and velocity control $11,350 $9,080 $2,270

2 LeClair Rd Address erosion with regarding and surfacing road and installing turn outs

$4,000 $3,200 $800

3 Johnson Rd Upgrade culvert headwall, regrade and resurface road and install ditch with turnout $3,400 $2,720 $680

4 Micah Rd Install stone lined ditch $7,570 $6,056 $1,514

5 Prospect Rd Address ditch erosion. Complete hydro

study replace undersized culvert ($-TBD). $4,267.50 $3,414 $853.5

6 Shadow Lake Rd Armor ditch wall, construct culvert headwall $10,840 $8,672 $2,168

7 Bullard Woods Rd Install cross culvert, stone line ditch $7,360 $5,888 $1,472

8 Beebe Rd Install culvert inlet armoring, stone line ditch $3,870 $3,096 $774

9 South St Rd Install check dams and ditch with turn out $3,750 $2,952 $738

10 Willson Rd Replace undersized culvert $110,000 $88,000 $22,000

11 Kirby Mtn Rd Culvert replacements $8,757.50 $7,006 $1,751.50

Total Estimated Project Cost $174,985 $139,988 $34,997

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Site1: Long Hill Rd

HY No. 5 Concord

Royalston RdDitch Erosion AroundCorner to Culvert

LONG

HILL RD

WH

EA

TO

N R

D

MAIN ST

SY LEWIS M

OUNTA

IN R

D

CONCORD

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Site1: Long Hill Rd

Hwy No. 5 Concord

Site Description_______________________________________________________________________

Long Hill Road project area has native soils of Cabot to Cabot-Colonel Complex of poorly to somewhat poorly drained silt

loamy till. The road is 2.66 mile ~7% slope class 3 road with narrow road surface, high vegetated banks and small to no

ditching. There has been recent residential development in the higher section of the road. The section of from this new house

down ~800’ to a poor condition cross culvert the has road surface and ditch erosion that directly deposits to unnamed brook

that drains to the Moose River and runs parallel to road.

Recommended Treatment______________________________________________________________

Starting approximately .5 mile up from the bottom of the road at existing cross culvert up to first driveway ~300’ remove

vegetation and push back banks to the R.O.W. on the north side of the road. Install properly lined ditches, install a metal 24”

cross culvert at the top of the section and a 30’ culvert at the bottom of the section ~20’ up from existing cross culvert. Install

a sediment detention basin/pool at the outlet of each to decrease velocity and capture sediment.

This treatment will only address the bottom section of the area with issue but will address the direct loading to the stream and

will give the town a place to start in getting this road into better shape.

Construction Notes:

Construction Specification guidelines for culverts, ditches and outlet structures- See the Vermont Better Back Roads

Manual, 2009, the Vermont Standards and Specifications for Erosion Prevention and Sediment Control 2006 & the VTrans

Hydraulic Manual 1998

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Labor 60hrs $25 $1500

Chipper 20hrs $30 $600

Excavation 25hrs $135 $3,375

Move Truck 40hrs $80 $3,200

24” Culvert 30’ $15.50 $465

30” Culvert 30’ $25 $750

Ledge 105 T $12 $1,260

Total $11,350

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Conceptual Drawing of example culvert outlet treatments_______________________________________________

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Site2: LeClair Rd

HWY No. 40 Concord

TH

51

LE

CLA

IR R

D

GR

IST

MIL

L P

IT R

D

SH

AD

OW

LA

KE

RD

MIT

CH

EL

L R

DCONCORD

TH

51

LECLAIR R

D

GRIST M

ILL PIT RD

SH

AD

OW

LA

KE

RD

MIT

CH

EL

L R

D

CONCORD

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Site2: LeClair Rd

HWY No. 40 Concord

Site Description_______________________________________________________________________

LeClair Road project area has native soils are Cabot-Colonel complex of poorly to somewhat poorly drained loamy stony till.

The road is 2.97 mile ~10% slope class 4 road with narrow road surface, vegetated banks and no ditching with one ditch on

the north side of the road that has become a perennial stream. There has recent residential development in the higher section

of the road. The section of from the last recently installed turn out to ~225’ to the bottom of the road has road surface water

flow and erosion that directly deposits to Halls Brook and around where the town installed a new bridge in 2011.

Recommended Treatment______________________________________________________________

Address erosion from last turn out to bottom by installing three additional proper road turnouts on the south side of road,

reshaping and grading the road surface toward these turnouts with the lowest one being larger and acting also as settling basin.

This treatment will only address the bottom section of the area with issue but will address the direct loading to the stream and

will give the town a place to start in getting this road into better shape.

Construction Notes:

Construction Specification guidelines for ditches, turnouts and settling basins- See the Vermont Better Back Roads

Manual, 2009 2009 & the Vermont Standards and Specifications for Erosion Prevention and Sediment Control 2006 (see

conceptual drawing below)

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Truck Time 15hrs $80 $1,200

Grader Time 6hrs $100 $600

Back Hoe 6hrs $70 $420

¾” Gravel 200T $8 $1,600

Ledge 15T $12 $180

Total $4,000

Conceptual Drawing of example turn out treatment___________________________________________________

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Site3: Johnson Rd

HWY No. 27 Concord

JOHNSON R

D

LEC

LA

IR R

D

BOM

BARD RD

MIT

CH

ELL R

D

TEMPLE HILL RD

CUTTING RD

STAGECOACH RD

CONCORD

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Site3: Johnson Rd

HWY No. 27 Concord

Site Description_______________________________________________________________________

Johsnon Road project area has native soils are Cabot generally poorly drained silt loam till. The road is 1.2 mile class 4 road in

the area evaluated the road has an ~2-4% slope with narrow road surface, high vegetated banks and no ditching. There are

permeant to semi-permanent residential developments in the further section of the road. The section of road that crosses an

unnamed tributary to Mink Brook has surface erosion that directly deposits to the brook.

Recommended Treatment______________________________________________________________

Address erosion from cross culvert ~250’ up from the stream culvert by installing proper a proper ditch and a turnout on the

east side of road, reshaping and grading the road surface toward the ditch. Raise stone headwall on the brook culvert.

This treatment will only address the section of the road that is close to the tributary to address the direct loading to the brook.

Construction Notes:

Construction Specification guidelines for ditches, turnouts and culvert headwalls- See the Vermont Better Back Roads

Manual, 2009 2009 & the Vermont Standards and Specifications for Erosion Prevention and Sediment Control 2006 (see

conceptual drawing below)

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Truck Time 12hrs $80 $960

Back Hoe 8hrs $70 $560

Grader 5hrs $100 $500

¾” Gravel 150 T $8 $1,200

Ledge 15T $12 $180

Total $3,400

Conceptual Drawing of example culvert headwall treatment_____________ _________________________________

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Site 4: Micah Baker Rd

HWY No. 43 Concord

MIT

CH

EL

L R

D

BEEDE RD

SH

AD

OW

LA

KE

RD

HIG

H R

IDG

E R

D

MO

RTO

N L

N

TH 51

PATCHES RD

SETTER RD

CONCORD

Beebe RdDitch erosiondirect to brook

MIT

CH

EL

L R

D

SH

AD

OW

LA

KE

RD

HIG

H R

IDG

E R

D

MO

RTO

N L

N

BEEDE RD

RUTLEDG

E RD

CONCORD

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Site Description_______________________________________________________________________

Micah Baker Road project area has native soils are Colonel-Dixfield moderately drained dense sandy loamy complex. The road

is 0.26 mile ~9% slope class 3 road with narrow road surface, high vegetated banks and ditches. The upper section of the road

has a few turnouts that need to be lowered and cleaned out but there are power lines in the area. The lower section of the road

is approximately 9% grade with road surface and ditch erosion on both sides going to Shadow Lake Road cross culverts that

drain directly and close to Halls Brook.

Recommended Treatment______________________________________________________________

On both sides of the road, stone line ~300’ of cleaned out ditches and install check damns or other velocity controls at ~22’

apart (or just at bottom of ditch were the slope is <2%) and regrade and recrown road surface toward turnouts.

Construction Notes:

Construction Specification guidelines for ditches and check dams- See the Vermont Better Back Roads Manual, 2009 &

the Vermont Standards and Specifications for Erosion Prevention and Sediment Control 2006 (see conceptual drawing below)

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Move Equipment Time 2hrs $100 $200

Excavation Time 20hrs $135 $2,700

Truck time 40hrs $80 $3,200

Ledge 105T $12 $1,260

Seed 10lbs $2.50 $25

Hay 10 bales $3.50 $35

Labor 6hrs $25 $150

Total $7,570

Conceptual Drawings of example check dams__________________________________________________________

Site 4: Micah Baker Rd

HWY No. 43 Concord

S = h/s

Where:

S = spacing interval (ft.)

h = height of check dam

(ft.)

s = channel slope (ft./ft.)

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Site 5: Prospect St

HWY No. 35 Concord

CROSS RD

MAIN ST

PR

OS

PE

CT

ST S

HA

DO

W L

AK

E R

D

SOUTH ST

PR

IVA

CY

LN

W MAIN ST

HIGH ST

FORMOR RD

TH

48

CHAPMAN RD

SCHOOL ST

CONCORD

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Site 5: Prospect St

HWY No. 35 Concord

Site Description_______________________________________________________________________

Prospect Street project area has native soils of Wilmington-Colonel poorly to somewhat poorly drained fine sandy gravelly

loam compacted dense glacial till complex. The road is 1.5 mile ~3% slope class 3 road that is generally in good condition. The

area around the unnamed brook which drains to the Moose River has ditch erosion entering the brook in the area of an

undersized culvert.

Recommended Treatment______________________________________________________________

Stone line 100’ of ditch, install 20x 15’ driveway culvert, reshape 400’ of ditch on west side of the road, install turnout ~ 30’

before culvert in lower section of the field in the towns R.O.W.

Complete hydrologic study for the culverts drayage area. Replace culvert.

Construction Notes:

Construction Specification guidelines for ditches, turnouts and culverts- See the Vermont Better Back Roads Manual,

2009, the Vermont Standards and Specifications for Erosion Prevention and Sediment Control 2006 & the VTrans Hydraulic

Manual 1998

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Move Equipment time 2hrs $100 $200

Excavation time 10nhs $135 $1,350

Truck Time 20hrs $80 $1,600

Ledge 45T $12 $450

Seed 10lbs $2.50 $25

Hay 15 bales $$3.50 $52.50

Labor 12hrs $25 $300

15” Culvert 20’ $10 $200

Total $4,267.50

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Site 6: Shadow Lake Rd

HWY No. 5 Concord

SHAD

OW

LAKE R

D

LO

NG

HIL

L R

D

BAKER L

N

CH

AR

LO

TT

E L

N

DR

EA

M L

N

MITCHELL RD

MOUNT VIEW LN

CONCORD

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Site Description_______________________________________________________________________

Shadow Lake Road project area has native soils are Cabot-Colonel complex of poorly to somewhat poorly drained loamy

stony dense till. The road is 3.07 mile ~8-12% slope class 2 road. The ditch, which in some areas has bedrock in it, is eroding

into the road. This erosion goes the end of the ditch to an unnamed small mountain stream into a road culvert that flows

~500’ directly to Shadow Lake. The road culvert has an eroded headwall.

Recommended Treatment______________________________________________________________

Armor the ditch bank; excavate an area the normal size of average road edge erosion at the edge of road close to the ditch. Lay

filter fabric in the excavated area tying it to the road, lay large stone over the fabric add more stone on that, and then reshape

top of road edge and surface. Install headwall on stream culvert.

Construction Notes:

Construction Specification guidelines for ditches and culvert headwalls - See the Vermont Better Back Roads Manual,

2009 & the Vermont Standards and Specifications for Erosion Prevention and Sediment Control 2006

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Move Equipment Time 2hrs $100 $200

Excavation time 20hr $135 $2,700

Excavation Time/hammer 6hrs $220 $1,320

Truck Time 52hr $80 $4,160

Ledge 205T $12 $2,460

Total $10,840

Site 6: Shadow Lake Rd

TH 5 Concord

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Site 7: Bullard Woods Rd

HWY No. 29 Concord

TH 32

W M

AIN

ST

KIRBY MOUNTAIN RD

WOODWARD RD

CONCORD

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Site 7: Bullard Woods Rd

HWY No. 29 Concord

Site Description_______________________________________________________________________

Bullard Road project area has native soils of Buckland moderately well drained course-loamy till. The road is 0.35 mile ~ 8%

slope class 3 road with very wide road surface that meets or in some places in within the ditch that doesn’t hold much

vegetation. The road section of concern from the first driveway on the left (going uphill) down ~675’ to (2) cross culverts that

are carrying road surface and ditch erosion sediments to close proximity to a state identified class 2 wetland.

Recommended Treatment______________________________________________________________

Measure and refine road width and ditch line. Reshape and line ditch. Install cross culvert to outlet into woods above field

(~325’ from bottom of driveway referred to description). The ROW in the culvert drainage area need to be determined and

may need drainage rights from landowner. Install plunge pool at last culvert outlet.

Construction Notes:

Construction Specification guidelines for culverts, ditches and outlet structures- See the Vermont Better Back Roads

Manual, 2009 2009 & the Vermont Standards and Specifications for Erosion Prevention and Sediment Control 2006 (see

conceptual drawing below)

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Move Equipment Time 2hrs $100 $200

Excavation time 20hrs $135 $2,700

Truck time 40hrs $80 $3,200

Ledge 105 T $12 $1,260

Total $7,360

Conceptual Drawings of example stone ditch____________________________________________________________

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Site 8: Beede Rd

HWY No. 73 Concord

BEEDE RD

SH

AD

OW

LA

KE

RD

MORTO

N L

N

PATCHES RD

HIG

H R

IDG

E R

D

SETTER RD

CONCORD

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Site Description_______________________________________________________________________

Beebe Road project area has native soils of Cabot-Colonel complex of poorly to somewhat poorly drained loamy stony till.

The road is .91 mile ~10% slope class 3 road. Bridge and road work was completed in 2013 at the bottom of the road, at the

four way intersection. The road and ditches are generally in good condition with cross culvert and stone line ditches at the

bottom of the road. The ditch on the south side below Morton Ln has a ditch that shows signs of significant erosion. This

ditch carries water off of Morton Rd and Beebe and goes into two culverts the last culvert outlet shows signs of sediment

depositing in close proximity to Halls Brook. There are culverts at the upper section of this road that potentially have issues.

The town, DEC and VTrans are already working on this and thus are not mention here.

Recommended Treatment______________________________________________________________

Upgrade Morton road cross culvert inlet with stone. Reshape and stone line ~200’ of ditch to the second Beebe Road cross

culvert.

Construction Notes:

Construction Specification guidelines for ditches and culvert inlets- See the Vermont Better Back Roads Manual, 2009 &

the Vermont Standards and Specifications for Erosion Prevention and Sediment Control 2006(see conceptual drawing below)

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Move Equipment Time 2hrs $100 $200

Excavation time 10hrs $80 $1,350

Truck Time 20hrs $80 $1,600

Ledge 60T $12 $720

Total $3,870

Site 8: Beede Rd

HWY No. 73 Concord

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Site 9: South St

HWY No. 61 Concord

MAIN ST

LONG H

ILL RD

CROSS RD

ROYALSTON CRN RD

SOUTH ST

PR

OS

PE

CT

ST

SH

AD

OW

LA

KE

RD

HIGH ST

TH

48

TH

59

GE

OR

GE

ST

SCHOOL S

TCONCORD

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Site Description_______________________________________________________________________

South Street project area has native soils of Monadnock-Sunapee well to moderately well drained course loamy sand stony

gravel till complex. The road is .06 mile ~1-2% slope class 3 road. Bridge, ditch and road work were completed on the

Royalston road in 2013-2014 and the road and ditches are generally in good condition with cross culvert and stone line ditches

at the bottom of the road. The ditch on the east side of South St below where Eastern St turns off shows signs of significant

water and sediment run off from the road and ditch erosion which then flow into a cross culvert that outlets to the bank of

the Moose River . There is an old rail road line bed in this area which will have to be worked around during construction.

Recommended Treatment______________________________________________________________

Address ~150’erosion starting below the rail bed with defining, reshaping and stone lining ditch and installing turn

out/sediment basin and installing two-three check dams in the ditch leading to the culvert.

Construction Notes:

Construction Specification guidelines for ditches, turnouts and check dams- See the Vermont Better Back Roads Manual,

2009 & the Vermont standards and Specifications for Erosion Prevention and Sediment Control 2006

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Move Equipment time 2hrs $100 $200

Excavation Time 10hrs $135 $1,350

Truck time 20hrs $80 $1,600

Ledge 50T $12 $600

Total $3,750

Site 9: South St

HWY No. 61 Concord

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Site 10: Willson Rd

HWY No. 17 Concord

VIC

TO

RY

RD

N CONCORD RD

LADD RD

BR

OO

K R

D

BO

NA

RD

CONCORD

VICTORY

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Site Description_______________________________________________________________________

Wilson Road project area has native soils of Sunapee-Moosilauke moderately drained sandy course loamy till. The road is 1.12

mile ~8% slope class 3 road. The road and ditches are generally in good condition. Approximately .1mile north of the Bradley

road junction is a culvert in poor condition that conveys water from an unnamed brook in cross proximity to the Moose River.

A hydrologic study has been completed for this culvert in 2011 and will likely need to be updated. The estimate below is based

on the 2011 recommendations.

Recommended Treatment______________________________________________________________

Update hydrologic study and properly install recommended implementation projects.

Construction Notes:

Construction Specification guidelines for culverts- See the Vermont Better Back Roads Manual, 2009, the Vermont

Hydraulics Manual, ch. 6 1998

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment______________________________________________________ ~$110,000

Site 10: Willson Rd

HWY No. 17 Concord

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Site 11: Kirby Mountain Rd

HWY No. 28 Concord

W M

AIN ST

BR

OO

K R

D

SAW

MIL

L R

D

E M

AIN

ST

MA

IN S

T

WO

OD

WA

RD

RD

TH 32

BU

RR

OU

GH

S R

D

OLD

CO

NCO

RD R

D

CONCORD

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Site Description_______________________________________________________________________

Kirby Mountian Road area has native soils are Buckland moderately well drained course-loamy till. The road is 1.12 mile ~8-

10% slope class 3 road. Road and ditch work was completed in 2013. The road and ditches are generally in good condition

with cross culvert and stone line ditches. There are three culverts in poor to fair condition on this road. The first ~200 from

the junction of Bullard Rd continually fails and causes road surface failure and erosion. The other two~850’ from the junction

of Bullard Rd are without headers causing road and bank erosion around the culverts outlets.

Recommended Treatment______________________________________________________________

Install 3 new longer (40’x18”) culverts with great than 2:1 slope or proper headers with dry lay stone.

Construction Notes:

Construction Specification guidelines for culverts & headers- See the Vermont Better Back Roads Manual, 2009 & the

Vermont Hydraulics Manual, ch. 6 1998 (see conceptual drawing below)

Meet adopted codes and standards

Buried Cable/Utilities- Buried cable/utilities may be on site. Call dig safe 1-888-DIG-SAFE to locate buried utilizes

prior to construction.

Stabilize all disturbed areas with seed and mulch.

Cost Estimate for Treatment____________________________________________________________

Item Quantity Cost per unit Total

Move Equipment time 2hs $100 $200

Excavation Time 30hrs $135 $4,050

Truck Time 12hrs $80 $960

Labor 50hrs $25 $1,250

Ledge 45T $12 $540

Seed 10lbs $2.50 $25

Hay 15bales $3.50 $52.50

¾” Gravel 60T $8 $480

18” Culvert 120 $10 $1,200

Total $8,757.5

Conceptual Drawings for example culvert install________________________________________________________

Site 11: Kirby Mountain Rd

HWY No. 28 Concord

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Other sites visited and evaluated with Feasible Projects outside of project scope

Road/Site Name Issue Units

Proximity to Water Notes

Potential Retrofit -following codes and standards and accepted VT specifications Grant Source

Campers Rd

Ditch and rd erosion to Miles Pond swale/back water ~200'

This is a Lake association rd thus not included in this town report.

Address erosion and sediment loading BBR Category B

Grist Mill Rd

ATV brook crossing causing sediment loading from bank instability, town rd surface and power line access rd surface. ~500' direct

This site should be discussed with DEC River Engineer, Patrick Ross for guidance on allowable activities and funding sources and with VAST and the electric company. Stabilize bank and rd surface

BBR Category B, NRCS or private

Carr Brook Rd

ATV crossing/ going around culvert causing sediment loading from rd surface to brook.

>3' Culvert direct

This is a PTV rd but there should be considerations made to work this landowner to address potential road erosion and culvert issues on his many miles of roads in Concord and other neighboring towns.

Retire boot leg atv trail that goes through brook NRCS- EQIP

Ranney Rd Culvert Undersized culvert

>3' Culvert direct

Good project but with change in grade, stream size and characteristics it is out of the scope of BBR. Replace culvert

Town Highway Structures

Fouiner Rd

River flooding causing rd/driveway surface erosion.

>6' bridge >3' culverts direct

Big issue that needs to be addressed with DEC River Engineer, Patrick Ross

Town Highway Bridges Program

Brook Rd

Stream is starting to comprise road edge and surface. ~100' direct

Out of scope for BBR. Needs to be addressed with DEC River Scientist, Patrick Ross