South Prospect Street Gully Stabilization and Drainage Improvements Village of Lyndonville, Vermont June 7, 2021

REQUEST FOR BIDS

Project Schedule:

Jun 7, 2021 Issued Invitation to Bid

June 14, 2021 at 10:00 AM Mandatory Site Visit

June 15, 2021 at 4:00 PM

June 21, 2021 at 4:00 PM

Questions Due (email)

Bids Due (email)

June 23, 2021 Award Date

October 1, 2021 Project Completion Date

Emailed bid submissions must be received by 4:00 PM on June 21, 2021. Late bids will not be considered. DBE businesses are encouraged to submit proposals.

Bids must be clearly marked and emailed to: Kerry O’Brien, District Manager, Caledonia County Natural Resources Conservation District at: Kerry.obrien@vt.nacdnet.net

A mandatory pre-bid site visit is scheduled for June 14, 2021 at 10:00 AM. We will meet at the end of South Prospect Street and discuss details regarding the work. Following the pre-bid meeting, questions about the scope of work should be emailed to Joe Bartlett at Joe@fitzgeraldenvironmental.com and Kerry O’Brien at Kerry.Obrien@vt.nacdnet.net Background: The Caledonia County Natural Resources Conservation District (CCNRCD) and the Village of Lyndonville request bids from qualified contractors to assist with stabilization of a large gully located at the end of South Prospect Street, and for installation of grassed swales along the road to reduce runoff to the gully erosion site. The gully likely formed due to erosion at the outlet of a 6” PVC pipe that was connected to a catch basin installed at the end of South Prospect Street approximately 20 years ago. Erosion of steep sandy slopes accelerated until the Village DPW capped the outlet pipe in the catch basin in 2018. The upper portion of the slope is continuing to erode as the near vertical slope continues to adjust. Fitzgerald Environmental Associates has worked with CCNRCD and the Village to develop final designs to stabilize the gully erosion and to improve road drainage.

Details of the project are provided on the following pages and in the attached project drawings prepared by Fitzgerald Environmental Associates. Summary of Work: This project involves stabilization of a large gully erosion feature on a steep sand slope and drainage improvements along South Prospect Street to reduce surface runoff towards the erosion feature. The gully feature is approximately 80 feet south of the end of South Prospect Street. The drainage improvements are located along the edge of road, within the Village ROW, and do not require any modifications to the existing driveways. The contractor shall be responsible for removing a shed at the top of the slope (Bachand property). The selected Contractor will be responsible for all work shown on the attached drawings. The Contractor will be responsible for purchasing all materials specified on the attached plans. Generally, the selected Contractor will be responsible for:

• Purchasing all specified materials (root wads, anchors, coir logs, topsoil, plantings, seed, etc.) • Shed removal and disposal • Excavation and grading to reduce the slope of the gully, minimizing disturbance to adjacent vegetation

and slopes • Installation of root wad structures and coir logs to stabilize the slope • Installation of topsoil and plantings to reestablish vegetative cover on the slope • Cutting and capping the existing 6” plastic pipe projecting from the gully face (north end was capped in

2018) • Installation of grassed swales within Town ROW, approximately 260 linear feet total (no culverts) • The Village DPW will be responsible for locating and marking all utilities within the ROW • The Contractor will coordinate with CCNRCD and FEA to complete a final site walk-through, prior to

submitting final invoicing.

FEA will provide on-site construction supervision during the gully stabilization efforts.

The Village DPW will be responsible for improvements to the existing catch basin which is no longer connected to the pipe draining into the gully. The Village DPW will also be responsible for site restoration and final grading improvements for the grassed area between the top of the stabilized gully and South Prospect Street (as shown on plans).

Estimated quantities for excavation and select materials are provided below, Contractor is responsible for final quantities and additional materials as specified on the attached plans:

• Excavation – 140CY • Hauling – 140CY • Topsoil/Compost – 25CY • Coir Logs – 180LF • Shrub Plantings – 40 • Duckbill Anchors - 40

Attendance at the pre-bid site visit on Monday, June 14th at 10:00 AM is mandatory. Further details about the site work will be provided by CCNRCD and Fitzgerald Environmental Associates during a walk through

BID SHEET Proposal Dated:_____________________________________________ Contractor Name:____________________________________________ Contractor Signature:_________________________________________ Base Bid Items:

Project Items Bid Item Cost

Mobilization/Demobilization

Shed Removal

Gully Stabilization

Road Drainage Improvements

Total Base Bid:

Note:

The quantities listed in this RFB were estimated by FEA based on the design plans. The Contractor is responsible for all materials, labor, and excavation and hauling as specified on the attached plans.

730

735

740

745

750

755

760

765

770

775

740

750

760

770

780

Shed To BeRemoved

Disconnected 6" ØPVC Pipe

Approx. Outlet InvertElevation: 774.5'

Benchmark onCatch Basin RimElevation: 778.93'

South Prospect Street

Drainage Previously to CatchBasin, Now Overland FlowArea: 0.82 Acres

Retain 16"Sugar Maple

Retain 10"Cherry

Catch Basin to be RetrofittedWORK TO BE DONE BYVILLAGE OF LYNDON DPW

ChannelSpanning

Trees

PROPOSED SWALE TOEXISTING STABLE FLOW PATH

WORK TO BE DONE BYVILLAGE OF LYNDON DPW

Direct Drainage to GullyArea: 0.05 Acres

VILLAGE OF LYNDONDPW WILL BERESPONSIBLE FOR FINALSITE RESTORATION ANDGRADING BETWEEN THETOP OF GULLY AND THEVILLAGE ROW

Outlet

Fence

Existing Flowpath

Drainage Area

1-FT Contours(Existing)

Building

Edge of Pavement

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SHEET NO.

DATE

SCALE

DRAWN CHECKED

1" = 20'

EHB EPF

SHEET 1Existing conditions contours based on field survey byFEA (2020) and 0.7-meter LiDAR DEM (2016).

Top of Erosion

Existing Vegetation

20 0 10 20 FEET

1 INCH = 20 FEET

REMOVESHED

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REMOVE PIPEEXPOSEDDURINGGRADINGAND CAP

TIE-IN AT 3 STEMBOX ELDER

DOWNED TREESSPANNING GULLY, LIMITOF WORK, PLACE SLASHAND WOODY DEBRISFROM CLEARING INGULLY UPSLOPE OFTHIS POINT

Outlet

Drainage Area

1-FT Contours(Existing)

Building

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DATE

SCALE

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1" = 5'

EHB EPF

SHEET 2Existing conditions contours basedon field survey by FEA (2020) and

0.7-meter LiDAR DEM (2016).

5 0 2.5 5 FEET

1 INCH = 5 FEET

1-FT Contours(Proposed)

Coir Log(Proposed)

Existing Vegetation

Root Wad(Proposed)

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730

740

750

760

770

780

-10

720

790

-20

12'

Shrubs growing in gullyat the top and bottom

Southeast corner ofstorage building

Location of CrossSection on Sheet 4

Elev

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Distance from Gully Head (Feet)

SW NEHead of gully hasa 2-4 foot drop

6" pipe from catch basin,inlet capped in 2018

Large woody materialspanning channel

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SHEET NO.

DATE

SCALE

DRAWN CHECKED

1" = 10'

FCP

SHEET 3

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760

770

780

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790

Southern side ofstorage shed

Elev

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eet)

Distance from Gully Bottom (Feet)

SE NW

Existing Grade

Proposed Grade

Minimize disturbance toBox Elders and otherwoody and herbaceousvegetation along gully rim

Install Root Wads andCoir Logs (See Sheet 5)

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DATE

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1" = 5'

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SHEET 4

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Move StorageBuilding

Existing Grade

Proposed Grade

Distance from Gully Rim (Feet)

Elev

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Min. 4 inches of Topsoil

Seed with ConservationSeed Mix and cover with

Straw Erosion Blanket(North American Green

DS75) secured withBioSTAKES or equivalent.

Install 4-5 root wadssecured with cables to

duckbill anchors installedat least 4-feet below grade.

Cut andCap Pipe

Install 12" Coir logs with4ft wooden gradestakes. Backfill withcompost/topsoil andplant 1-gallon pottedplants spaced minimum6-FT on center. Speciesto be determined.

October 8, 2020

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SHEET NO.

DATE

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VCGI

") Existing CatchbasinDisconnected 6" Drain PipeExisting Flow PathNew Grass Ditch/Swale1ft Contours (LiDAR)Gully Direct Drainage AreaCatch Basin Drainage AreaParcel Boundary

0 8040 Feet

1 inch = 80 feet ±

Swale to be installed by Village DPW

Top of gully

Existing Condition - Runoff flows south along both edges of the road, minimal opportunity for infiltration

Sout h Pro sp ect St.

Catch basin to 6" drain pipeDisconnected in 2018DPW will replace with dry well

South Prospect Street GullySheet 6: Road Drainage Improvements

Lyndon, VT

Notes: Drainage boundary survey and road drainage assessment completed September 2018

Drawn: JHBDate: 6/4/2021

Fitzgerald Environmental Associates, LLC

18 Severance Green, Suite 203 Colchester, VT 05446

Telephone: 802.876.7778 www.fitzgeraldenvironmental.com

Proposed grass ditchesApproximate total length of 260 feetSheet 7 - Detail A

Bachand Property

McNally Property

1.0 ft

2 ft

Detail A: Grass-Lined Ditch Cross-Section1" = 2'

Existing Grade

Side Slopes 2H:1V

RoadSpread 3-4" of compost/topsoil andseed/hydroseed ditch surface.

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SHEET NO.

DATE

SCALE

DRAWN CHECKED

As Shown

EHB

SHEET 7

JHB