Plan sheet 1 of 2.pdfEXISTING
HEADWALL
INV. = 142.6
EXISTING
HEADWALL
INV. = 139.5
EXISTING
HEADWALL
INV. = 140.3
EXISTING
HEADWALLS
INV. = 138.3
INV. = 138.1
A
EXISTING 4' CONCRETE WATERWAY
EXISTING STONE LINED
DRAINAGE DITCH
EXISTING HEADWALL
INV. = 138.9
42" RCP
54" R
C
P
54"
R
C
P
54"
R
C
P
EXISTING STONE LINED CHANNEL -
PROP. CLEANING AND
RESTORATION BEGINS
EXISTING STONE LINED
CHANNEL - PROP.
CLEANING AND
RESTORATION ENDS
A
B
B
PROP. LIMIT OF
WORK (TYP.)
PROP. LOGGING
MATS FOR ACCESS
PROP.
SHRUB/VINE/PLANT
REMOVAL AREA BEGINS
PROP. INVASIVE
SHRUB/VINE/PLANT
REMOVAL AREA ENDS
RETAIN TREE AND SHRUBS BASED ON
CONDITION DURING CONSTRUCTION
FLOW
FLO
W
L = 116 FT
W
=
2
0
F
T
APPROX. LENG
T
H
O
F
D
I
T
C
H
=
1
2
8
F
T
EXISTING
HEADWALL
EXISTING
HEADWALL
AND PIPE
FLOW
EXISTING
HEADWALL
10.00'10.00'
SEED SIDE SLOPES WITH
EROSION CONTROL AND
RESTORATION SEED MIX
INVASIVE PLANT REMOVAL TYPICAL
SECTION B-B
ȭ
EXISTING CONCRETE WATERWAY
OR UNLINED STONE DRAINAGE DITCH
NOTES:
1) BRUSH SHALL BE CLEARED TEN (10)
FEET FROM THE CENTERLINE OF THE
EXISTING CONCRETE WATERWAY OR
UNLINED DRAINAGE CHANNEL.
2)BRUSH SHALL BE CUT FLUSH WITH
EXISTING GROUND LEVEL TO MINIMIZE
SOIL DISTURBANCE.LINE CHANNEL BOTTOM
AND SLOPES WITH
GEOTEXTILE FABRIC
NOTES:
1) THE CONTRACTOR WILL BE RESPONSIBLE FOR
CONTROL OF WATER DURING WORK. THE WATER
SHALL BE INTERCEPTED UPSTREAMOF THE WORK
AREA AND BE PUMPED BACK INTO THE DITCH AT A
LOCATION DOWNSTREAM FROM THE WORK. THE
EXCAVATION AND WATER CONTROL SHALL BE DONE
IN THE DRY AND IN A MANNER TO AVOID EROSION
AND SILTATION.
DITCH SHAPING TYPICAL
SECTION A-A
DEPTH VARIES
0' TO 1' (MAX)
1:1
1:
1
2.00'
ROUND TOP TO BLENDROUND TOP TO BLEND
WORK
AREA CHANNEL
FLOW
SAND BAG DAM OR
APPROVED DAM
MATERIAL
EXISTING HEADWALL
PROP. HOSE FOR
WATER CONTROL
PROP. PUMP FOR
WATER CONTROL
WATER CONTROL TYPICAL
NORTHAMPTON CONSTRUCTION PLAN
DI
T
C
H
C
L
E
A
N
I
N
G
_
H
D
1
(
C
O
N
S
T
R
U
C
T
I
O
N
P
L
A
N
S
)
.
D
W
G
20
-
J
u
l
-
2
0
1
5
3:
4
6
P
M
Pl
o
t
t
e
d
o
n
0
SCALE: 1" = 40'
40 160100
FED. AID PROJ. NO.SHEET
NO.
TOTAL
SHEETS
2
STATE
MA
PROJECT FILE NO.
-
--------
1
N. KING STREET & EXIT 21 DRAINAGE
STRUCTURE MAINTENANCE