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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: [email protected]
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 [email protected] and Kerry O’Brien at [email protected] 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
N
June 4, 2021
18 S
ever
ance
Gre
en, S
uite
203
Col
ches
ter,
VT
0544
6Te
leph
one:
802
.876
.777
8w
ww
.fitz
gera
lden
viro
nmen
tal.c
om
Gully
Sta
biliz
atio
nEx
istin
g Co
nditi
ons P
lan
Sout
h Pr
ospe
ct S
tree
tLy
ndon
, VT
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
779778
777
776775774
773772771
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
N
June 4, 2021
18 S
ever
ance
Gre
en, S
uite
203
Col
ches
ter,
VT
0544
6Te
leph
one:
802
.876
.777
8w
ww
.fitz
gera
lden
viro
nmen
tal.c
om
Gully
Sta
biliz
atio
nPr
opos
ed W
ork
Plan
Sout
h Pr
ospe
ct S
tree
tLy
ndon
, VT
SHEET NO.
DATE
SCALE
DRAWN CHECKED
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)
0102030405060708090100
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
atio
n (F
eet)
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
October 8, 2020
18 S
ever
ance
Gre
en, S
uite
203
Col
ches
ter,
VT
0544
6Te
leph
one:
802
.876
.777
8w
ww
.fitz
gera
lden
viro
nmen
tal.c
om
Gully
Sta
biliz
atio
n De
tail
S. P
rosp
ect S
tree
tLy
ndon
, VT
Not
es:
SHEET NO.
DATE
SCALE
DRAWN CHECKED
1" = 10'
FCP
SHEET 3
Prof
ile is
base
d on
fiel
dsu
rvey
by
FEA
onJu
ne 3
, 202
0.
EPF
-20
-10 0 10 20 30
760
770
780
-30
790
Southern side ofstorage shed
Elev
atio
n (F
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)
October 8, 2020
18 S
ever
ance
Gre
en, S
uite
203
Col
ches
ter,
VT
0544
6Te
leph
one:
802
.876
.777
8w
ww
.fitz
gera
lden
viro
nmen
tal.c
om
Gully
Sta
biliz
atio
n De
tail
S. P
rosp
ect S
tree
tLy
ndon
, VT
Not
es:
SHEET NO.
DATE
SCALE
DRAWN CHECKED
1" = 5'
FCP
SHEET 4
Cros
s Sec
tion
isba
sed
on fi
eld
surv
ey b
y FE
A on
June
3, 2
020.
JHB
0
-10
-20102030
750
760
770
780
790
Move StorageBuilding
Existing Grade
Proposed Grade
Distance from Gully Rim (Feet)
Elev
atio
n (F
eet)
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
18 S
ever
ance
Gre
en, S
uite
203
Col
ches
ter,
VT
0544
6Te
leph
one:
802
.876
.777
8w
ww
.fitz
gera
lden
viro
nmen
tal.c
om
Gully
Sta
biliz
atio
n De
tail
S. P
rosp
ect S
tree
tLy
ndon
, VT
Not
es:
SHEET NO.
DATE
SCALE
DRAWN CHECKED
1" = 5'
FCP
SHEET 5
Prof
ile is
base
d on
fiel
dsu
rvey
by
FEA
onJu
ne 3
, 202
0.
EPF
")
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.
June 4, 2020
18 S
ever
ance
Gre
en, S
uite
203
Col
ches
ter,
VT
0544
6Te
leph
one:
802
.876
.777
8w
ww
.fitz
gera
lden
viro
nmen
tal.c
om
Road
Dra
inag
e Im
prov
emen
tsS.
Pro
spec
t Str
eet
Lynd
on, V
T
Not
es:
SHEET NO.
DATE
SCALE
DRAWN CHECKED
As Shown
EHB
SHEET 7
JHB