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westonandsampson.com Offices in: MA, CT, NH, VT, NY, PA, MD, NC, SC & FL
55 Walkers Brook Drive, Suite 100, Reading, MA 01867
Tel: 978.532.1900
October 22, 2020
Conservation Commission
Town of Holden
1196 Main Street
Holden, MA 01520
Attn: Glenda Williamson
Re: Notification of Minor Changes (No. 2)
NOI Filing
New DPW Facility
18 Industrial Drive
Dear Commissioners:
Regarding the 11/19/2019 Notice of Intent and Order of Conditions issued 1/8/2020 (DEP File #: 183-0665) for
the new DPW facility project at 18 Industrial Drive, we are hereby submitting information regarding additional
minor changes in the design.
The additional minor changes relate to the locations of the buildings and the overall elevation of the site, as well
as minor adjustments to the drainage system necessitated by building relocation and the elevation change. The
changes do not have any appreciable impact on the design as previously reviewed by the Commission, and they
represent a slight improvement with respect to proximity to wetland resource areas.
The additional minor changes are summarized as follows:
• slight shift in location of main facility building and salt storage structure
• adjusted finish grade of the site
• minor adjustments to drainage system
• minor adjustments to Limit of Work associated with above changes
These minor design changes are described in more detail below, and they are depicted in the attached plans.
Shift in Location of Buildings
In order to optimize circulation on the site and minimize excavation, the location of the salt shed was
shifted approximately 50 feet to the southeast (away from wetlands). In order to maintain adequate
maneuvering space between the salt shed and main DPW facility building, the main DPW facility building
was shifted approximately 17 feet to the east. This contributed to increased separation from the wetlands.
These location shifts are shown on the attached plan entitled “C-301 Comp – Layout Comparison Plan”
which shows the revised building, salt shed and drainage system locations (in black linework) compared
with the former locations (in blue linework). Also, based on the current status of the project, the Town
anticipates proceeding with constructing the portion of the building identified as “Bid Alt” as shown in the
documents as originally submitted.
Raised Elevation of the Site
In order to decrease export of soil from the project, the finish grade was raised by approximately one foot.
This included the main DPW facility building, the salt shed, the fuel island and paved areas (except where
they transition to the existing grades at the entrance/exit at Industrial Drive). The landscaped areas near
the main building were also raised. However, the elevation of the landscaped areas along Industrial Drive
did not change, nor did the elevation of the infiltration swales.
Page 2
westonandsampson.com Offices in: MA, CT, NH, VT, NY, PA, MD, NC, SC & FL
Adjustments to Drainage System
As a result of the building relocation and the site elevation change, minor adjustments were made to the
drainage system, including but not limited to a shift in the location of the subsurface infiltration system
between the salt shed and the main building and slight adjustments in the location of manholes, catch
basins and drainage piping. See attached C-501 Comp – Drainage Comparison Plan which shows the
revised building, salt shed and drainage system locations (in black linework) compared with the former
locations (in blue linework).
Shift in Limit of Work
The Limit of Work along the west side of the site was shifted slightly to the east in recognition of the shift
of the Salt Shed described above. There were also minor modifications to the Limit of Work in Industrial
Drive to reflect utility connection work.
Attached Plans
In order to assist the Commission with understanding the minor design changes discussed herein, we
have prepared and attached two plans entitled “C-301 Comp – Layout Comparison Plan” and “C-501
Comp – Drainage Comparison Plan” that show the revised building, salt shed and drainage system
locations (in black linework) compared with the former locations (in blue linework).
In addition, we have included the following plans from the original NOI revised with the changes described
above:
Sheet C301 – Layout and Materials Plan
Sheet C501 – Grading and Drainage Plan
As indicated above, these proposed changes will not significantly change the performance of the stormwater
system as presented in the design and calculations submitted with our original Notice of Intent. As was the case
with the original design, all post-development conditions will be improvements compared to pre-development
conditions.
We respectfully request review of the minor changes outlined above and confirmation as to whether they will require
further action.
If you have any questions or would like to discuss this further, please do not hesitate to contact me at (978) 532-
1900, ext. 2209.
Sincerely,
WESTON & SAMPSON ENGINEERS, INC.
Anthony J. Wespiser, P.E.
Senior Project Manager
Attachments: Drawing Sheet C-301 Comp – Layout Comparison Plan
Drawing Sheet C-501 Comp – Drainage Comparison Plan
Drawing Sheet C301 – Layout and Materials Plan (revised 10/01/2020)
Drawing Sheet C501 – Grading and Drainage Plan (revised 10/01/2020)
cc: Gary Kaczmarek, Town of Holden
D
MAP
186,
LOT
43N/
F LA
NDS
OFQU
AMCO
INC
BK. 8
424,
PG. 9
7
MAP
186,
LOT
35N/
F LA
NDS
OFCL
EALA
ND B
. BLA
IRBK
. 111
87, P
G. 18
7
(P
UB
LIC
- 50' W
ID
E)
IN
DU
ST
RIA
L D
RIV
E
STOP
ST
OP
ST
OP
IN
DU
ST
RIA
L D
RIV
E
SALT SHED
BID ALT. 3
EN
ENENEN
EN
EN
EN
EN
ADMINISTRATION
ENGINEERING
STAFF
PROPOSED PUBLIC
WORKS FACILITY
SHOPS
VEHICLE
MAINTENANCE
VEHICLE STORAGE
CANOPY
WASH BAY
FU
TU
RE
E
XP
AN
SIO
N
STOP
ST
OP
ST
OP
EN
EN EN
EN
EN
EN
EN
EN
EN
EN
MEDIUM
AQUIFER
BOUNDARY
ORIGINAL
LIMIT OF
WORK
REVISED
LIMIT OF
WORK
ORIGINAL
BUILDING
LOCATION
REVISED
BUILDING
LOCATION
ORIGINAL
SALT SHED
LOCATION
REVISED
SALT SHED
LOCATION
100 FT
WETLAND
BUFFER
25 FT "NO
DISTURB"
WETLAND
BUFFER
Project:
JANUARY 13, 2020Date:
Drawn By:
Reviewed By:
Approved By:
Drawing Title:
Sheet Number:
EC
Seal:
Revisions:
Rev Date Description
Consultants:
W&S Project No:
WESTON & SAMPSON COPYRIGHT 2019
SCALE: AS NOTED
PERMITTING
Issued For:
Weston & Sampson Engineers, Inc.
100 Foxborough Boulevard Suite 250
Foxborough, MA 02035
(508) 698-3034 (800) SAMPSON
www.westonandsampson.com
2150412
TOWN OF HOLDEN, MA
DEPARTMENT OF PUBLIC WORKS
18 INDUSTRIAL DRIVE
HOLDEN, MA
EC
LFK
FOR PERMIT ONLY
NOT FOR CONSTRUCTION
NOTES:
1. THIS PLAN SHOWS THE REVISIONS TO THE PREVIOULSY SUBMITTED
AND APPROVED PLANS FOR PROPOSED DPW FACILITY. THE ORIGINAL
BUILDING LOCATIONS, CURBING, AND LIMIT OF WORK ARE SHOWN IN
BLUE. REVISED LOCATIONS ARE SHOWN IN BLACK
N
N
A
D
8
3
C-301
COMP
LAYOUT
COMPARISON
PLAN
0
SCALE: 1" = 40'
40 160100
OCTOBER 1,2020
22
MAP
173,
LOT
56N/
F LA
NDS
OFED
WAR
D T
COLE
BK. 2
3959
, PG.
78MA
P 17
3, BL
OCK
34 LO
T 2
N/F
LAND
S OF
ROBE
RT P
. HIM
MER
BK. 1
3205
, PG.
209
MAP
186,
LOT
35N/
F LA
NDS
OFCL
EALA
ND B
. BLA
IRBK
. 111
87, P
G. 18
7
D
D
D
D
MAP
186,
LOT
43N/
F LA
NDS
OFQU
AMCO
INC
BK. 8
424,
PG. 9
7
D
MAP
186,
LOT
43N/
F LA
NDS
OFQU
AMCO
INC
BK. 8
424,
PG. 9
7
MAP
186,
LOT
35N/
F LA
NDS
OFCL
EALA
ND B
. BLA
IRBK
. 111
87, P
G. 18
7
A
IN
DU
ST
RIA
L D
RIV
E
STOP
ST
OP
ST
OP
D
DD
D
D
D
DD
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
W W W W W W
W W W W W W W W W W W
EE
EE
E
S
S
S
S
S
G
WW
WW
WW
WW
WW
EE
E
E E E E E E E
W W
W W
E
E E E
E E E E E EE
E
E
E
T T T T T TT
T
T
T
T
E
HH
HH
T
TT
TT
TT
T T TT
HH
EE
EE
EE
E
E
HH
HH
E
HH E
E
w
ww
s
s
s
w
ww
E
E
EE
EE
EE
E
E E E E
INFILTRATION
SWALE 2
INFILTRATION
SWALE 1
MEET EXISTING
GRADE AT
SAWCUT LINE
100-YEAR
FLOOD
AREA
25' NO DISTURB BUFFER
100' WETLANDS BUFFER
SLEEVE EXIST 24" CMP WITH
18" SDR 35 PVC PIPE
REPAIR EXIST HEADWALL; MORTAR
SPACE BETWEEN EXIST AND NEW
PIPE AT HEADWALL;
ADD RIPRAP AT THE HEADWALL
FOR EROSION PROTECTION
IN
DU
ST
RIA
L D
RIV
E
STOP
ST
OP
ST
OP
73
2
7
3
1
7
2
7
733
733
732
7
3
1
7
3
0
7
3
2
73
2
7
2
9
7
2
8
7
2
7
7
2
6
7
2
5
7
2
4
7
2
3
7
3
0
7
2
9
7
2
8
7
2
7
7
2
6
7
2
5
7
2
4
7
2
4
7
2
1
71
3
715
714
71
5
71
8
71
8
71
7
71
9
72
0
720
71
9
71
7
733
730
7
2
7
723
7
2
8
7
3
0
71
9
7
3
4
7
3
3
7
2
9
7
2
2
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
73
3
D
D
EMERGENCY SPILLWAY
EL =717.2
EMERGENCY SPILLWAY
EL =719.25
CONNECT TO EXIST DMH
INV = 712.20
7
2
2
727
725
721
719
7
3
2
7
3
0
72
7
7
2
9
7
2
9
7
3
1
7
3
1
7
1
8
7
2
6
716
734734
7
3
2
7
3
3
7
3
4
7
3
3
7
3
2
7
3
3
734
733
7
3
3
7
3
3
7
3
4
7
3
3
7
3
2
733 733 733
73
3
TW: 731.6
BW: 728.8
TW: 730.4
BW: 727.5
TW: 731.5
BW: 728.1
717
7
3
4
7
3
3
7
3
4
FFE = 734
PROPOSED DPW
SALT SHED
FFE = 733
Project:
JANUARY 13, 2020Date:
Drawn By:
Reviewed By:
Approved By:
Drawing Title:
Sheet Number:
EC
Seal:
Revisions:
Rev Date Description
Consultants:
W&S Project No:
WESTON & SAMPSON COPYRIGHT 2019
SCALE: AS NOTED
PERMITTING
Issued For:
Weston & Sampson Engineers, Inc.
100 Foxborough Boulevard Suite 250
Foxborough, MA 02035
(508) 698-3034 (800) SAMPSON
www.westonandsampson.com
2150412
TOWN OF HOLDEN, MA
DEPARTMENT OF PUBLIC WORKS
18 INDUSTRIAL DRIVE
HOLDEN, MA
EC
LFK
FOR PERMIT ONLY
NOT FOR CONSTRUCTION
N
N
A
D
8
3
0
SCALE: 1" = 40'
40 160100
NOTES:
1. THIS PLAN SHOWS THE REVISIONS TO THE PREVIOULSY SUBMITTED
AND APPROVED PLANS FOR PROPOSED DPW FACILITY. THE ORIGINAL
BUILDING LOCATIONS AND DRAINAGE NETWORK ARE SHOWN IN BLUE.
REVISED LOCATIONS ARE SHOWN IN BLACK
C-501
COMP
DRAINAGE
COMPARISON
PLAN
OCTOBER 1,2020
DELETE WITHBUILDING EXTENSION
D
D
D
D
D
MAP
186,
LOT
43N/
F LA
NDS
OFQU
AMCO
INC
BK. 8
424,
PG. 9
7
MAP
186,
LOT
35N/
F LA
NDS
OFCL
EALA
ND B
. BLA
IRBK
. 111
87, P
G. 18
7
A
B
(P
UB
LIC
- 50' W
ID
E)
(AKA ROUTE 122A)
(PUBLIC-VARIABLE WIDTH)
IN
DU
ST
RIA
L D
RIV
E
SALT SHED
BID ALT. 3
EN
ENENEN
EN
EN
EN
EN
ADMINISTRATION
ENGINEERING
STAFF
PROPOSED PUBLIC
WORKS FACILITY
SHOPS
VEHICLE
MAINTENANCE
VEHICLE STORAGE
CANOPY
WASH BAY
FU
TU
RE
E
XP
AN
SIO
N
STOP
ST
OP
ST
OP
EN
EN EN
EN
EN
EN
EN
EN
EN
EN
HH
HH
HH
HH
HH
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
20
'2
5'
20
'2
0'
25
'2
0'
10'
(TYP)
8'24' 20'
8
0
'
4
3
'
10'
HMA BERM
CONC PAD FOR
GENERATOR
CONC PAD
FOR TRANSF.
DUMPSTER
ON CONC. PAD
6' CONC.
WALK
PROP.
FLAGPOLE
PROP. LIGHT
POLE (TYP)
HYDRANT
(TYP)
4" PAVEMENT
STRIPING
(TYP)
GRAN. CURB
GRAN. CURB
GRAN. CURB
GRAN. CURB
GRAN. CURB
GR
AN
. C
UR
B
GR
AN
. C
UR
B
H
M
A
B
E
R
M
35' OPENING
AUTOMATIC
SLIDING GATE
32' OPENING
AUTOMATIC
SLIDING
GATE
R1-1
SIGN
R1-1
HEAVY DUTY
HMA
PAVEMENT
HEAVY DUTY
HMA
PAVEMENT
CONC. BLOCK
LOADING RAMP
BOLLARD
(TYP)
MEET EXIST.
PAVEMENT AT
SAWCUT LINE
FUEL ISLAND
BID ALT. 2
(SEE EQ-DWGS)
6' CHAIN LINK
FENCE
MEET EXIST. CLF
6' CHAIN LINK
FENCE
R7-8 IN
BOLLARD
LIMIT OF
WORK (TYP)
INFILTRATION
SWALE 1
INFILTRATION
SWALE 2
100 YEAR FLOOD
BOUNDARY
WESTERN
AREA
DISPOSAL
BOUNDARY
SOUTHERN
AREA
DISPOSAL
BOUNDARY
GATE
OPERATOR ON
CONC. PAD
RIP RAP
APRON (TYP)
GATE
OPERATOR
KEY PAD
WESTERN
AREA
DISPOSAL
BOUNDARY
25' NO DISTURB BUFFER
100' WETLANDS BUFFER
100 YEAR FLOOD AREA
WCR
STEEL BACKED
TIMBER GUARD
RAIL
30
'
43
'
43
'
37
.1
2'
120'
LOAM AND
SEED
83.73'
27'
24'
8'
33
'
146.52'
LIGHT DUTY
PAVEMENT
5' CONC.
WALK
R1-1
AUTHORIZED
VEHICLES
ONLY SIGN
HEAVY DUTY
HMA PAVEMENT
UNDER CANOPY
FUEL ISLAND CANOPY
BID ALT. 4
(SEE EQ-DWGS)
16
.9
'
CRUSHED
STONE
CURB TYPE CHANGE.
USE VERTICAL TO
CURB GRANITE
TRANSITION CURB
INSTALL 5' HMA STRIP
ALONG GATE PATH
INSTALL 5' HMA STRIP
ALONG GATE PATH
6" HMA PAVEMENT
INSIDE SALT SHED
LOAM AND
SEED (TYP)
CATCH BASIN
(TYP)
DRAIN
MAINHOLE
(TYP)
SEWER
MANHOLE
(TYP)
DASHED LINE
REPRESENTS GATE IN
OPEN POSITION (TYP)
GAS METER
PAD
PAVEMENT
STRIPING
(TYP)
20
'
5'
DPW
IDENTIFICATION
SIGN
CONC. PAD FOR
FUEL ISLAND
CABINET
50'
28'
6' CHAIN LINK
FENCE
6' CHAIN LINK
FENCE
KNOCKDOWN
AREA (SLOPE
TO CB)
LIMITS OF
GROUND
IMPROVEMENT
(SEE NOTE 8)
RETAINING
WALL
LIMIT OF GROUND
IMPROVEMENT
(SEE NOTE 8)
10'
ACCU 2 & 3
CONC. PAD
ACCU 1
CONC. PAD
CURB TYPE CHANGE.
USE VERTICAL TO
BERM GRANITE
TRANSITION CURB
R7-8 &
R7-8A
IN BOLLARD
10'
12
'
5'
7'
6.5'
WCR
WCR
Project:
JULY 8, 2020Date:
Drawn By:
Reviewed By:
Approved By:
Drawing Title:
Sheet Number:
Seal:
Revisions:
Rev Date Description
Consultants:
W&S Project No:
WESTON & SAMPSON COPYRIGHT 2019
SCALE: AS NOTED
BID
Issued For:
Weston & Sampson Engineers, Inc.
100 Foxborough Boulevard Suite 250
Foxborough, MA 02035
(508) 698-3034 (800) SAMPSON
www.westonandsampson.com
TOWN OF HOLDEN, MA
DEPARTMENT OF PUBLIC
WORKS
18 INDUSTRIAL DRIVE
HOLDEN, MA
2150412
0
SCALE: 1" = 40'
40 160100
NOTES:
1. GRANITE CURB SHALL BE TYPE VA-4 UNLESS OTHERWISE IDENTIFIED.
2. EXISTING SITE CONDITIONS SHOWN ARE FROM GROUND SURVEYS
PERFORMED BY CONTROL POINT ASSOCIATES, INC. DATED 4-4-19,
UPDATED ON 7-11-19.
3. PROVIDE 6" HMA PAVING WITHIN SALT SHED.
4. PROVIDE NEW HOT MIX ASPHALT PAVEMENT BETWEEN ALL
PROPOSED CURB LINES, EDGE OF PAVEMENT & BUILDINGS
(INCLUDING UP TO SAWCUT LIMITS).
5. ALL SAWCUTS SHALL HAVE RS-1 ASPHALT EMULSION TACK COAT
ADDED PRIOR TO ABUTTING PAVEMENT, MATCHING EXISTING
CONDITIONS.
6. CONTRACTOR SHALL PATCH EXISTING PAVED AREAS WITH HMA
FOLLOWING UTILITY INSTALLATION
7. ALL BACKFILL MATERIAL BELOW PROPOSED BUILDINGS SHALL
CONSIST OF STRUCTURAL FILL PER EARTHWORK SPECIFICATION 31 00
00.
8. GROUND IMPROVEMENT NOTE: ACHIEVE THE RAPID IMPACT
COMPACTION (RIC) DESIGN REQUIREMENTS DESCRIBED IN
SPECIFICATIONS SECTION 31 66 13 - GROUND IMPROVEMENT BY RAPID
IMPACT COMPACTION. TO BE COMPLETED WITHIN, PROPOSED
STRUCTURES INCLUDING THE MAIN BUILDING (INCLUDING FUTURE
EXPANSION AREA), SALT SHED, CANOPY STRUCTURES, AND FUEL
ISLAND). GROUND IMPROVEMENTS FOR SALT SHED AND FUEL ISLAND
SHALL BE COMPLETED UNDER THE BASE BID WORK.
N
N
A
D
8
3
C301
LAYOUT AND
MATERIALS PLAN
HEAVY DUTY PAVEMENT
CONCRETE
LEGEND:
100 YEAR FLOOD AREA PER
W&S FLOOD STUDY
LIGHT DUTY PAVEMENT
CRUSHED STONE
PLANTED AREA, REFER TO
PL101
EC
EC
LFK
1 10/1/2020 PERMITTING UPDATE
NOTE:
1. THIS PLAN INCLUDES ALL REVISIONS MADE TO THE DESIGN
PLANS AFTER ORIGINAL PERMITTING SUBMITTAL. IT IS BEING
RESUBMITTED FOR RECORD.
DELETE WITHBUILDING EXTENSION
MAP
173,
LOT
56N/
F LA
NDS
OFED
WAR
D T
COLE
BK. 2
3959
, PG.
78MA
P 17
3, BL
OCK
34 LO
T 2
N/F
LAND
S OF
ROBE
RT P
. HIM
MER
BK. 1
3205
, PG.
209
MAP
186,
LOT
35N/
F LA
NDS
OFCL
EALA
ND B
. BLA
IRBK
. 111
87, P
G. 18
7
MAP
186,
LOT
43N/
F LA
NDS
OFQU
AMCO
INC
BK. 8
424,
PG. 9
7
D
MAP
186,
LOT
43N/
F LA
NDS
OFQU
AMCO
INC
BK. 8
424,
PG. 9
7
MAP
186,
LOT
35N/
F LA
NDS
OFCL
EALA
ND B
. BLA
IRBK
. 111
87, P
G. 18
7
A
FFE = 734
IN
DU
ST
RIA
L D
RIV
E
STOP
ST
OP
ST
OP
73
2
7
3
1
7
2
7
733
733
732
7
3
1
7
3
0
7
3
2
73
2
7
2
9
7
2
8
7
2
7
7
2
6
7
2
5
7
2
4
7
2
3
7
3
0
7
2
9
7
2
8
7
2
7
7
2
6
7
2
5
7
2
4
7
2
4
7
2
1
71
3
715
714
71
5
71
8
71
8
71
7
71
9
72
0
720
71
9
71
7
733
-3.0:1
-6.6:1
730
7
2
7
723
7
2
8
7
3
0
71
9
7
3
4
7
3
3
7
2
9
7
2
2
CB-1
R=732.81
I(out)=729.76 (DMH-17)
D
DMH-17
R=732.91
I(in)=729.18 (CB-1)
I(in)=729.69 (CB-2)
I(out)=729.18 (DMH-18)
P-1
D
DMH-18
R=732.92
I(in)=728.62 (DMH-17)
I(in)=729.68 (CB-3)
I(out)=728.62 (SWTU-1)
P-2
D
SWTU-1
R=732.21
I(in)=727.50 (DMH-18)
I(in)=728.63 (DBCB-2)
I(out)=727.50 (INF-1)
P-3
P-4
D
OCS-1 (W/ GRATE)
R=732.80
I(in)=727.00 (INF-1)
I(out)=728.00 (DMH-14)
VEE WEIR EL = 728.75
P-5
P-6
CB-2
R=732.80
I(out)=729.75 (DMH-17)
P-7
CB-3
R=732.80
I(out)=729.75 (DMH-18)
P-8
SWTU-2
R=732.86
I(out)=728.90 (INF-1)
P-9
CB-4
R=733.22
I(out)=730.17 (DMH-3)
D
DMH-3
R=734.20
I(in)=728.83 (CB-4)
I(in)=728.92 (CB-6)
I(out)=728.92 (DMH-4)
P-10
D
DMH-4
R=733.63
I(in)=728.13 (DMH-3)
I(in)=729.28 (DBCB-3)
I(in)=730.54 (CO-8)
I(out)=728.13 (SWTU-3)
P-11
D
SWTU-3
R=733.57
I(in)=727.70 (DMH-4)
I(in)=727.94 (DMH-5)
I(out)=727.70 (INF-1)
P-12
P-13
CB-5
R=732.12
I(out)=729.07 (DMH-5)
D
DMH-5
R=732.41
I(in)=728.39 (CB-5)
I(in)=728.38 (DBCB-1)
I(out)=728.30 (SWTU-3)
P
-
1
4
P-15
CB-6
R=732.25
I(out)=729.20 (DMH-3)
P-16
DBCB-1 (6' DIA)
R=731.67
I(out)=728.62 (DMH-5)
P-17
DBCB-2 (6' DIA)
R=731.76
I(out)=728.71 (SWTU-1)
P-18
DBCB-3 (6' DIA)
R=732.57
I(out)=729.52 (DMH-4)
P
-
2
1
CB-7
R=731.62
I(out)=728.57 (DMH-6)
D
DMH-6
R=731.11
I(in)=728.06 (CB-7)
I(in)=726.19 (CB-11)
I(out)=726.19 (DMH-7)
P-22
D
DMH-7
R=730.78
I(in)=725.48 (DMH-6)
I(in)=727.36 (CB-12)
I(out)=725.48 (DMH-10)
P-23
D
DMH-8
R=725.10
I(in)=721.80 (CB-10)
I(in)=722.00 (DBCB-4)
I(out)=721.80 (DMH-9)
P-24
P
-25
D
DMH-9
R=718.87
I(in)=714.13 (CB-8)
I(in)=714.13 (CB-9)
I(in)=714.65 (DMH-8)
I(out)=714.00 (SWTU-6)
D
SWTU-6
R=718.00
I(in)=713.91 (DMH-9)
I(out)=713.90 (FES1)
P-27
FES1
I(in)=713.66 (SWTU-6)
P-28
CB-8 (LOW PROFILE FRAME)
R=717.12
I(out)=714.18 (DMH-9)
P-29
CB-9 (LOW PROFILE FRAME)
R=717.07
I(out)=714.27 (DMH-9)P
-
3
0
CB-10
R=724.89
I(out)=721.84 (DMH-8)
P-31
DBCB-4 (6' DIA)
R=728.46
I(out)=725.41 (DMH-8)
P-32
CB-11
R=729.53
I(out)=726.48 (DMH-6)
P-33
CB-12
R=730.45
I(out)=727.40 (DMH-7)
D
DMH-10
R=730.17
I(in)=724.28 (CB-13)
I(in)=724.36 (DMH-7)
I(out)=724.28 (SWTU-5)
P-34
D
SWTU-5
R=727.08
I(in)=722.55 (DMH-10)
I(out)=722.55 (FES2)
P-35
FES2
I(in)=718.00 (SWTU-5)
P-36
CB-13
R=729.44
I(out)=725.41 (DMH-10)
P-37
DBCB-5 (6' DIA)
R=729.12
I(out)=721.98 (SWTU-4)
D
SWTU-4
R=724.28
I(in)=719.31 (DBCB-5)
I(in)=718.80 (CB-14)
I(in)=719.00 (CB-15)
I(out)=718.00 (FES3)
P
-
3
8
FES3
I(in)=717.11 (SWTU-4)
P
-3
9
CB-14 (LOW PROFILE FRAME)
R=721.92
I(out)=719.20 (SWTU-4)
P
-
4
0
CB-15 (LOW PROFILE FRAME)
R=721.88
I(out)=719.26 (SWTU-4)
P-41
CO-1
INV=730.79
P-42
P-43
P-44
CO-2
INV=728.43
P-45
D
DMH-11
R=732.27
I(in)=727.60 (CO-2)
I(in)=730.21 (CO-6)
I(out)=727.60 (DMH-12)
P-46
P
-
4
7
D
DMH-12
R=732.41
I(in)=725.19 (DMH-14)
I(in)=725.46 (DMH-11)
I(out)=725.09 (DMH-1)
D
DMH-1
R=732.35
I(in)=723.12 (DMH-12)
I(out)=±719.6 (EX. HW)
(SEE NOTE 11)
P-49
CO-3
INV=730.47
P-50
CO-4
INV=729.60
P-51
P-52
OCS-2
R=718.00
I(out)=715.25 (DMH-2)
D
DMH-2
R=716.26
I(in)=714.71 (OCS-2)
I(out)=714.61 (DMH-13)
P
-
5
3
D
DMH-13
R=716.80
I(in)=712.26 (DMH-2)
I(in)=712.63 (OCS-3)
I(out)=712.62 (CO-5)
P-54
P
-
5
5
OCS-3
R=716.75
I(out)=712.75 (DMH-13)
3 - 5" ORIFICES @ 715.75
P-56
CO-6
INV=730.97
P-57
73
3
D
DMH-14
R=733.28
I(in)=726.70 (OCS-1)
I(in)=728.70 (DMH-15)
I(out)=726.70 (DMH-12)
D
DMH-15
R=733.46
I(in)=729.59 (CO-3)
I(in)=729.24 (CO-7)
I(out)=729.00 (DMH-14)
CO-7
INV=730.46
P-58
P-59
P-60
INF-1
7 ROWS X 23 ADS
DC-780 CHAMBERS
BOT. OF CHAMBERS
EL=727.0
EMERGENCY SPILLWAY
EL =717.2
EMERGENCY SPILLWAY
EL =719.25
X
733.5
HP
734.1
734.1
734.1
734.1
734.5
HP
732.4BW
735.0 TW
733.5
733.1
732.9
X
733.0 BW
737.0 TW
X
733.5
HP
X
728.1
HP
X
731.5
HP
X
734.0
HP
734.0
734.0
CONNECT TO EXIST DMH
INV = 712.20
7
2
2
727
725
721
719
7
3
2
7
3
0
72
7
7
2
9
7
2
9
7
3
1
7
3
1
7
1
8
7
2
6
733.5
HP
733.5
HP
733.5
HP
716
CO-8
INV=730.83
P
-
6
1
734.0 734.0
734.0
734.0
733.8
734.0
734.0
734.0
733.5
733.5
734.0
734.0
733.4732.3
732.2
731.8
733.3
733.0
733.0
732.6
728.9
730.0
734.0
FUEL ISLAND CANOPY
DRAINS - BASE BID
(SEE EQ. DWGS)
PROPOSED
DOWNSPOUTS (TYP), SEE
ARCH DWGS NUMBER
AND LOCATIONS
733.5
734.0
734734
734.0
7
3
2
CO-9
INV=730.91
732.4
733.9
733.0
733.9734.2
CO-10
INV=730.32
CO-11
INV=729.92
CO-12
INV=729.75
734.5
734.5
734.0
732.1
732.1
732.7
728.9
729.2
722.3
722.3725.7
X
735.1
X
732.4 BW
737.0 TW
X
734.7
X
733.4 BW
737.0 TW
X
734.0
7
3
3
7
3
4
7
3
3
7
3
2
7
3
3
734
733
7
3
3
733.0733.0
733.0733.0
7
3
3
7
3
4
7
3
3
7
3
2
733 733 733
73
3
-3.0
:1
-
3
.
2
:
1
-3.5:1
TW: 731.6
BW: 728.8
TW: 730.4
BW: 727.5
727.4
728.9
TW: 731.5
BW: 728.1
717
PVC GATE
VALVE (SEE
NOTE 10)
PVC GATE
VALVE (SEE
NOTE 10)
733.8
732.5
FUEL SYSTEM
BID ALT. 2
FUEL ISLAND CANOPY
BID ALT. 4
7
3
4
7
3
3
7
3
4
INFILTRATION
SWALE 2
INFILTRATION
SWALE 1
MEET EXISTING
GRADE AT
SAWCUT LINE
100-YEAR
FLOOD
AREA
25' NO DISTURB
BUFFER
100' WETLANDS
BUFFER
SLOPE
KNOCKDOWN
ARE TO CATCH
BASIN
PROPOSED DPW
SALT SHED
BID ALT. 3
SLEEVE EXIST 24" CMP WITH
18" SDR 35 PVC PIPE
REPAIR EXIST HEADWALL; MORTAR
SPACE BETWEEN EXIST AND NEW
PIPE AT HEADWALL;
ADD RIPRAP AT THE HEADWALL
FOR EROSION PROTECTION
4" PERF. PVC
DAILIGHT
THROUGH
FACE OF
WALL @
EVERY 40 FT.
EN
ENEN
EN
EN
ADMINISTRATION
ENGINEERING
STAFF
SHOPS
EN
EN
EN
EN
733
733
73
2
D
TW: 731.6
BW: 728.8
734.0 TC733.87BC733.87
FLUSH
TRANSITION
CURB
RAMP
734.0
TC734.32BC733.82
733.9
TC733.82BC733.32
734.0734.0
TC733.85BC733.35TC733.85BC733.35
733.9734.1733.9733.4
733.35
RAMP
RAMP
TC733.85BC733.35
734
TC733.50BC733.00
733.00
733.0733.5
734.0
734.0733.85
TC734.5BC734.0
733.80733.80
RAMP
TC733.55BC733.05
TC733.45BC732.95
TC733.56BC732.16
734.0734.0
PIPE TABLE
PIPE
P-1
P-2
P-3
P-4
P-5
P-6
P-7
P-8
P-9
P-10
P-11
P-12
P-13
P-14
P-15
P-16
SIZE & TYPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
18" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
LENGTH
67 LF
67 LF
130 LF
17 LF
7 LF
159 LF
2 LF
3 LF
41 LF
118 LF
75 LF
23 LF
25 LF
64 LF
36 LF
52 LF
SLOPE
0.008
0.008
0.008
0.027
0.000
0.008
0.010
0.010
0.008
0.011
0.010
0.016
0.026
0.010
0.009
0.005
PIPE TABLE
PIPE
P-17
P-18
P-21
P-22
P-23
P-24
P-25
P-27
P-28
P-29
P-30
P-31
P-32
P-33
P-34
P-35
SIZE & TYPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
LENGTH
20 LF
18 LF
44 LF
64 LF
67 LF
108 LF
136 LF
5 LF
21 LF
6 LF
24 LF
4 LF
99 LF
55 LF
6 LF
159 LF
SLOPE
0.010
0.004
0.005
0.008
0.010
0.010
0.051
0.010
0.010
0.005
0.005
0.005
0.033
0.005
0.005
0.011
PIPE TABLE
PIPE
P-36
P-37
P-38
P-39
P-40
P-41
P-42
P-43
P-44
P-45
P-46
P-47
P-49
P-50
P-51
P-52
SIZE & TYPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
18" HDPE
18" HDPE
12" HDPE
12" HDPE
12" HDPE
LENGTH
46 LF
24 LF
76 LF
36 LF
40 LF
22 LF
94 LF
80 LF
35 LF
132 LF
81 LF
142 LF
24 LF
87 LF
131 LF
70 LF
SLOPE
0.092
0.040
0.034
0.023
0.009
0.010
0.005
0.005
0.005
0.010
0.010
0.015
0.070
0.010
0.010
0.010
PIPE TABLE
PIPE
P-53
P-54
P-55
P-56
P-57
P-58
P-59
P-60
P-61
SIZE & TYPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
12" HDPE
18" HDPE
12" HDPE
LENGTH
35 LF
104 LF
42 LF
7 LF
74 LF
120 LF
6 LF
139 LF
56 LF
SLOPE
0.014
0.022
0.010
0.011
0.010
0.010
0.030
0.011
0.005
Project:
JULY 8, 2020Date:
Drawn By:
Reviewed By:
Approved By:
Drawing Title:
Sheet Number:
Seal:
Revisions:
Rev Date Description
Consultants:
W&S Project No:
WESTON & SAMPSON COPYRIGHT 2019
SCALE: AS NOTED
BID
Issued For:
Weston & Sampson Engineers, Inc.
100 Foxborough Boulevard Suite 250
Foxborough, MA 02035
(508) 698-3034 (800) SAMPSON
www.westonandsampson.com
TOWN OF HOLDEN, MA
DEPARTMENT OF PUBLIC
WORKS
18 INDUSTRIAL DRIVE
HOLDEN, MA
2150412
Grading at Admin Entrance Detail
SCALE1"=20'
1
0 20 40
N
N
A
D
8
3
C501
GRADING AND
DRAINAGE PLAN
0
SCALE: 1" = 40'
40 160100
NOTES:
1. ON-SITE EXCAVATION MATERIAL MAY BE USED FOR BACKFILL
OUTSIDE LIMITS OF BUILDING ONLY IF IT MEETS THE
REQUIREMENTS FOR BACKFILL PER THE EARTHWORK
SPECIFICATION (31 00 00). ON-SITE EXCAVATION MATERIAL
SHALL NOT BE USED BELOW ANY BUILDING FOOTPRINTS. IF
MATERIAL DOES NOT MEET SPECIFICATIONS FOR REUSE, THE
CONTRACTOR SHALL REMOVE AND DISPOSE OF MATERIAL IN
ACCORDANCE WITH LOCAL AND STATE REQUIREMENTS. NO
ADDITIONAL COST WILL BE CONSIDERED FOR REMOVAL AND
DISPOSAL OF EXCAVATED MATERIAL AND REPLACEMENT WITH
NEW SUITABLE FILL TO MEET PROPOSED GRADES.
2. UNLESS OTHERWISE NOTED ALL DRAIN PIPES SHALL BE 12"
HDPE (HIGH DENSITY POLYETHYLENE).
3. UNLESS OTHERWISE NOTED, ALL DRAIN MANHOLES SHALL BE 4'
INSIDE DIAMETER.
4. ALL RIM ELEVATIONS SHALL BE FLUSH WITH FINISH GRADE.
5. DUMPSTER PAD SHALL SLOPE AT A MINIMUM 2% INTO THE
PAVED AREA.
6. EROSION CONTROL FABRIC "A" SHALL BE USED FOR ALL SLOPES
3:1 OR STEEPER.
7. FOR THE PROPOSED ROOF DRAIN LINES, THE CONTRACTOR
SHALL INSTALL CLEAN OUTS AT THE END OF THE PIPE LINE, AT
ANY LOCATION WHERE THE PIPE CHANGES DIRECTIONS, AND
AT A 100 FOOT INTERVALS AS NEEDED. CLEANOUTS LOCATED IN
PAVED AREAS SHALL BE INSTALLED TO PROVIDE H-20 WHEEL
LOADING RATING.
8. THE LOCATIONS OF EXISTING UNDERGROUND UTILITIES ARE
SHOWN IN AN APPROXIMATE WAY ONLY AND HAVE NOT BEEN
INDEPENDENTLY VERIFIED BY THE OWNER OR ITS
REPRESENTATIVE. THE CONTRACTOR SHALL DETERMINE THE
EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE
COMMENCING WORK, AND AGREES TO BE FULLY RESPONSIBLE
FOR ANY AND ALL DAMAGES WHICH MIGHT BE OCCASIONED BY
THE CONTRACTOR'S FAILURE TO EXACTLY LOCATE AND
PRESERVE ANY AND ALL UNDERGROUND UTILITIES. WHERE AN
EXISTING UTILITY IS FOUND TO CONFLICT WITH THE PROPOSED
WORK, THE LOCATION, ELEVATION AND SIZE OF THE UTILITY
SHALL BE ACCURATELY DETERMINED WITHOUT DELAY BY THE
CONTRACTOR AND THE INFORMATION FURNISHED TO THE
ENGINEER FOR RESOLUTION OF THE CONFLICT.
9. THE CONTRACTOR SHALL INSTALL SILT SACKS ON ALL
PROPOSED INLETS FOR THE DURATION OF CONSTRUCTION AND
INSPECT THE CATCH BASINS AFTER EACH RAIN EVENT. THE
SEDIMENT FROM SEDIMENT TRAPS SHALL BE REMOVED WHEN
DESIGN CAPACITY HAS BEEN REDUCED BY 50 PERCENT. SILT
SACKS SHALL BE REMOVED ONCE THE SITE IS PERMANENTLY
STABILIZED AT THE END OF CONSTRUCTION.
10. CONTRACTOR SHALL PROVIDE 12" PVC GATE VALVE TO ALLOW
FOR SHUTOFF OF DRAINAGE PIPING UPSTREAM OF
INFILTRATION CHAMBER SYSTEM AND DOWNSTREAM OF
KNOCKDOWN AREA CATCH BASIN. GATE VALVES SHALL BE AS
MANUFACTURED BY VALTERRA, OR APPROVED EQUAL.
11. CONTRACTOR SHALL DO A TEST PIT TO CONFIRM INVERT
ELEVATION OF THE EXISTING 24" CMP PIPE AT DMH1 AND
PROVIDE INFORMATION TO THE ENGINEER PRIOR TO
INSTALLATION OF DMH1.
12. CONTRACTOR SHALL STAKE OFF THE AREA OF INFILTRATION
CHAMBER SYSTEM AND INFILTRATION SWALES TO PREVENT
CONSTRUCTION EQUIPMENT AND STOCKPILED MATERIALS
FROM COMPACTING THE SUBGRADE SOIL, AND TO PROTECT
THEM FROM CONSTRUCTION TRAFFIC AFTER INSTALLATION.
13. THE CONTRACTOR IS DIRECTED TO THE GEOTECHNICAL
REPORT FOR DEPTH TO LEDGE. THE CONTRACTOR IS REQUIRED
TO REMOVE ALL LEDGE NECESSARY TO INSTALL THE
PROPOSED WORK AT NO ADDITIONAL COST TO THE TOW.
EC
EC
LFK
1 10/1/2020 PERMITTING UPDATE
NOTE:
1. THIS PLAN INCLUDES ALL REVISIONS MADE TO THE DESIGN
PLANS AFTER ORIGINAL PERMITTING SUBMITTAL. IT IS BEING
RESUBMITTED FOR RECORD.
(DELETE WITH BUILDING EXTENSION)
