20210403 Ver 1_USACE Bulletins 2-9-22_20220209

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VI_ D. TWEED (LE)
BARA H. TWEED (LE) II
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Civil
Design
Concepts, PA
NCBELS C-2184
USE: 12E IDEN7TIAL \
PROPOSED WETLAND IMPACT 3 (324 SF)
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JOHN MU(J5Y
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PIN: 0619-88-2565
JAMES * MARY MUNDY
DB 1553 PG 455
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PROPOSED STREAM IMPACT 2
(79 LF, 388 SF AREA)
PROPOSED WETLAND IMPACT 4 (596 SF)
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PROPOSED STREAM IMPACT 1
(98 LF, 443 SF AREA)
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NOTE: STREAM IMPACT AREAS ARE MEASURED
FROM THE TOPS OF BANKS AND THE
PROPOSED LIMITS OF GRADING.
55,
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BROOKS COVE
STREAM IMPACT MASTER BULLETIN
FEBRUARY 2022

N OprN
0
30
/ / e4 /
/
/ /
PROPOSED STREAM IMPACT 1
(98 LF, 443 SF AREA)
co
\1
8S
`S' V.:2423.4'
—�I V.: 242 I.9'
EXISTING TOP
OF BANK (TYP)
cp Civil
Design
Concepts, PA
NCBELS #: C-2184
EXISTING STREAM "SOUTH"
EXISTING STREAM
BUFFER (TYP)
INSTALL TEMPORARY SANDBAG WALL FOR STREAM
DIVERSION DURING HEADWALL AND BYPASS PIPE
INSTALLATION (SEE DETAIL D3.02)
2432
2430
NOTE: STREAM IMPACT AREAS ARE MEASURED
FROM THE TOPS OF BANKS AND THE
PROPOSED LIMITS OF GRADING.
PROPOSED BYPASS PIPE (SEE DETAIL D3.02)
PROPOSED STORM
SYSTEM (TYP)
PROPOSED PERMANENT 42" HDPE DOUBLE
PIPE CULVERT STREAM CROSSING.
2440 —2440
2430—
HDPE®2.6%
2420-
2410—
m
U
N
m
U
d-
aD N
aim
N
0 + d
N
d
c Q 0
0 Iz
0
0
FINISHED GRADE
PROPOSED STORM CROSSING
m
U
m
0
EXISTING GRADE
2420
2410
2400 ' 2400
o o ,-
o 0
o+ + +
THE 42-INCH HDPE PIPES SHALL BE INDIVIDUALLY WRAPPED IN FILTER
CLOTH. THE PIPE INVERT IS TO BE FITTED WITH "FLEXI BAFFLE"
CULVERT BAFFLES BY S. SCOTT AND ASSOCIATES, OR APPROVED
EQUAL, AND INSTALLED PER MANUFACTURER'S STANDARDS. THE
BAFFLES SHALL BE INSTALLED AT 8-FOOT SPACING AND NO CLOSER
THAN 4 FEET TO A PIPE JOINT OR END. THE BAFFLES ARE TO BE
ATTACHED TO THE HDPE INVERT BETWEEN THE CORRUGATIONS WHERE
THE FULL WALL THICKNESS IN PRESENT.
CULVERT 3
BROOKS COVE STREAM IMPACT 1
IMPACT BULLETIN
FEBRUARY 2022

N OprN
I
THE 42-INCH HDPE PIPES SHALL BE INDIVIDUALLY WRAPPED IN FILTER
CLOTH. THE PIPE INVERT IS TO BE FITTED WITH "FLEXI BAFFLE"
CULVERT BAFFLES BY S. SCOTT AND ASSOCIATES, OR APPROVED
EQUAL, AND INSTALLED PER MANUFACTURER'S STANDARDS. THE
BAFFLES SHALL BE INSTALLED AT 8-FOOT SPACING AND NO CLOSER
THAN 4 FEET TO A PIPE JOINT OR END. THE BAFFLES ARE TO BE
ATTACHED TO THE HDPE INVERT BETWEEN THE CORRUGATIONS WHERE
THE FULL WALL THICKNESS IN PRESENT.
EXISTING STREAM "NORTH"
EXISTING 2' CONTOURS
PROPOSED STREAM IMPACT 2
(79 LF, 388 SF AREA)
PROPOSED BYPASS PIPE (SEE DETAIL D3.02)
PROPOSED PERMANENT 42" HDPE DOUBLE
PIPE CULVERT STREAM CROSSING.
PO?
1. ip
Design
Concepts, PA
NCBELS #: C-2184
NOTE: STREAM IMPACT AREAS ARE MEASURED
FROM THE TOPS OF BANKS AND THE
PROPOSED LIMITS OF GRADING.
INSTALL TEMPORARY SANDBAG WALL FOR STREAM
DIVERSION DURING HEADWALL AND BYPASS PIPE
INSTALLATION (SEE DETAIL D3.02)
PROPOSED 2' CONTOURS
PROPOSED STORM
SYSTEM (TYP)
I I 2<
EXISTING TOP
OF BANK (TYP)
EXISTING STREAM
BUFFER (TYP)
PROPOSED WETLAND IMPACT 2 (1,377 SF)
2460-
2450
FINISHED GRADE
2460
PROPOSED STORM CROSSING
2440-
2430—
Q
0
O
0_
2420-
0
0
0
N
O
PE. 0 3.4%
/19
0
N
N
0
0
0_
CULVERT A
2450
EXISTING GRADE
—2440
—2430
—2420
o
0
+ +
BROOKS COVE STREAM IMPACT 2
IMPACT BULLETIN
FEBRUARY 2022

CIRCULAR CULVERT
WATER SURFACE
STREAMBED MATERIAL —�
SEE NOTES BELOW
Val -I
Mw1 I
MIN COVER
(SEE TRENCH DETAL)
INITIAL BACKFILL
-MPACTED TO 98%
F STANDARD PROCTOR)
HAUNCH
(COMPACTED TO 98%
OF STANDARD PROCTOR)
SUITABLE FOUNDATION
NOTES:
1. CULVERTS GREATER THAN 48" IN DIAMETER SHALL BE BURIED AT LEAST ONE FOOT
BELOW THE BED OF THE STREAM
2. CULVERTS 48" IN DIAMETER OR LESS SHALL BE BURIED 25% OF THE TOTAL DIAMETER
BELOW THE BED OF THE STREAM
cl
Design
Concepts, PA
NCBELS #: C-2184
STREAM CULVERT
NOT TO SCALE
Dewatering Device
or dirt/sediment bag)
Flow
Discharge Pump
Into Velocity
Dissipater
Discharge Hose
Dewatering Pump
(as needed)
Discharge Hose
Work Area
Length Not To Exceed
That Which Can Be
Completed In One Day
Sheeting
Flow
Intake
Hose
Sump —hole
Or Pool
12" Min Depth
2' Min Diameter
Diversion Pump
Base Flow + 1 Foot
(2 Foot Minimum)
Cross Section Of Sandbag/Stone Diversion
SECTION A -A
PUMP AROUND / DEWATERING
PLAN VIEW DETAIL
NOT TO SCALE
BROOKS COVE
STREAM IMPACT DETAIL BULLETIN
FEBRUARY 2022