20230549 Ver 1_revised impact map_20230524

STREAM 6 MIL. PLASTIC PUMP EXCESS WATER TO
APPROVED DEWATERING
DRY WORK AREA
SAND OR GRAVEL BAG COFFERDAM
NOT TO SCALE
TEMPORARY CREEK CROSSING PUMP
AROUND DETAIL
(NTS)
PLAN VIEW SECTION A -A
!. DESCRIPTION
THE WORK SHALL CONSIST OF INSTALLING A PUMP AROUND WHEN
CONSTRUCTION ACTIVITIES TAKE PLACE WITHIN THE STREAM CHANNEL
II. MATERIAL SPECIFICATIONS
SANDBAGS: SANDBAGS SHALL CONSIST OF MATERIALS WHICH ARE
RESISTANT TO ULTRAVIOLET RADIATION, TEARING AND PUNCTURE, AND
WOVEN TIGHTLY ENOUGH TO PREVENT LEAKAGE OF FILL MATERIAL
(i.e. SAND, FINE GRAVEL, ETC.)
III. CONSTRUCTION REQUIREMENTS
1. ALL EROSION AND SEDIMENT CONTROL DEVICES SHALL BE INSTALLED AS
THE FIRST ORDER OF WORK.
2. THE HEIGHT OF THE SANDBAGS SHALL BE AS INDICATED IN SECTION A -A.
THE SANDBAGS SHALL BE PLACED ON A SMOOTH PREPARED SURFACE.
3. ALL EXCAVATED MATERIALS SHALL BE DISPOSED OF OUTSIDE THE 100
YEAR FLOOD PLAIN UNLESS APPROVED ON THE PLANS.
4. ALL DEWATERING OF THE CONSTRUCTION AREA SHALL BE PUMPED TO A
DEWATERING PUMP DISCHARGE FILTER BAG OR SILT BASIN.
5. THE PUMP SHALL BE OF SUFFICIENT SIZE TO CONVEY NORMAL STREAM
FLOW.
6. SEDIMENT CONTROL DEVICES ARE TO REMAIN IN PLACE UNTIL ALL
DISTURBED AREAS ARE STABILIZED AND THE CITY ENGINEERING DEPT APPROVES
THEIR REMOVAL.
W1 FT.
�8" O.C.(TYP.)
REFER TO CHART
FOR BAR SIZE
ELEVATION
PLAN
SIDE
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NOTES:
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• THIS PRECAST ENDWALL MAY BE USED FOR THE FOLLOWING
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STANDARDS: 838.01, 838.11, 838.21, 838.27, 838.33,
LL J d ++ 2
838.39, 838.51, 838,57, 838.63 AND 838.69.
O S O') _
• INSTALL PRECAST ENDWALLS WITH WINGS AND PAY
W Q Q W =
FOR IN ACCORDANCE WITH SPECIFICATION SECTION 838.
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• USE 4000 PSI CONCRETE.
F 3_ ~ z W
` PROVIDE ALL REINFORCING STEEL WHICH MEETS ASTM A615
W I- LL O J
FOR GRADE 60 AND WELDED WIRE FABRIC CONFORMING
p U w Q
Q
TO ASTM A185 WITH 2" MIN. CLEARANCE.
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• PLACE LIFT HOLES OR PINS IN ACCORDANCE WITH
H ice+
OL
OSHA STANDARD 1926.704.
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• PIPE TO BE GROUTED INTO HEADWALL AT JOB SITE BY
o
CONTRACTOR
• ALL ELEMENTS PRECAST TO MEET ASTM C913.
• WELDED WIRE FABRIC MAY BE SUBSTITUTED FOR REBAR
AS LONG AS THE SAME AREA OF STEEL IS PROVIDED.
• CHAMFER ALL CORNERS 1" OR HAVE A RADIUS OF 1".
3
NOTE: THE MINIMUM BAR SIZE SHALL BE #5 BARS
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AT 8" CTS.THE CONTRACTOR WILL HAVE THE OPTION
¢
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TO INCREASE THIS BAR SIZE AS NEEDED,
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ENDWALL DIMENSIONS
FT.
MINIMUM
MIN./MAX.
MIN./MAX.
MIN./MAX.
MIN./MAX.
MIN./MAX.
PIPE DIA.
BAR
SIZE
H7(FT.)
H2(FT.)
D (FT.)
W1
W2
1.0
#5
@ 8"
1.25/2.00
2.00/3.75
1.2511.75
3.00/3.75
5.50/6.00
1.25
#5
@ 8"
1.25/2.00
3.00/3.75
1.25/2.00
3.50/3.75
6.50/6.75
1.50
#5
@ B"
1.25/2.00
3.00/4.25
1.5012.50
3.50/3.75
6.50/6.75
2.0
#5
@ 8"
1.50/2.50
4.00/4.75
1.75/2.50
4.00/4.25
7.50/8.25
2.5
#5
@ 8"
2.50/3.50
4.00/6.00
2.00/3.00
4.50/5.50
10.00/11.50
3.0
#5
@ 8"
3.00/3.50
5.00/6.00
2.75/3.50
5.2515.75
11.50111.75
3.5
#5
@ 8"
3.2514.50
6.00/6.75
3.25/3.50
6.00/6.75
12.00/13.25
4.0
#5
@ 8"
3.50/4,50
6.50/7.00
3.25/3.50
6.50/6.75
13.00/13.25
4.5
#5
@ 8"
4.00/5.00
6.50/8.50
3.25/4.00
7.00/9.25
13.50/15.75
6.0
#5
@ 8"
4.50/5.00
7.00/8.50
3.25/4.00
7.25/9.25
13.75/16.75
5.5
#5
@ 8"
4.50/5.00
7.50/8.50
3.25/4.00
7.25/9.25
14.00/15.75
6.0
#5
@ 8"
4.50/5.00
7.50/8.50
3.25/4.00
7.75/9.25
14.75/16.75
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1' A
-woo- PERMANENT BUFFER
DISTURBANCE
PZ 2B= 2,262 SF
JE-r \
>`� ~' - �� "°•� �� PERMANENT BUFFER
DISTURBANCE
30'x15'x2' CLASS 1 PZ 1 B= 3,984 SF
RIP RAP PAD \
\ PERMANET STREAM
'/ DISTURBANCE
�. _. S2_ 141 SF (30 LF)
////H//p /
/ TE
BYPASSPIPIPE � EADWALL 001
NCDOT STD. 838.80
PERMANENT BUFFER
STURBANCE
DISTURBANCE
/ PZ 1o=4,122 SF
/ PERMANENT BUFFER
DISTURBANCE
/ PZ 2A=1,976 SF N.,
/ 'A
-1+00
780
775
770
765
760
PROPOSED
0+00
/ TEMPORARY
SANDBAGS
HEADWALL 002
NCDOT STD. .8 .80
INV' 750.40'
60" RCP @ 4.16%
/ 000, / /� o
.000
/
004, CENTERLINE
OF STREAM
-TS 2: 55 SF (10 LF) 5' APPROXIMATE
PUMPAROUND STREAM TOB
\7 TEMP. IMPACTS
= ZONE
30'STREAM BUFFER
ZONE2
fl, I
-20'STREAM BUFFER
i
WETLANDS
TEMPORARY CREEK (TYP.) /
CROSSING PUMP
l000l(SEE DETAILS)
PERMANENT
/ WETLAND
DISTURBANCE
W1 = 357 SF
PERMANENT STREAM _
IMPACT
St = 680 SF (136 LF) ----
30 0 15 30 60 120
SCALE: 1" = 30'
1+00 2+00
HW 002
STA. 1+05.82
RIM 758.90
IN 750.40
I EXISTING GRADE OF� m
/ CROSSING CULVERT
I
i
/ cP @y.
106�
RIP RAP APRON EXISTING GRADE
0.I MUST 745
J60 \L ITY p `"Vp CENTERLINE
T REIN
OpJ� O O ,.1 � _... � � CENTERLINE ...
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BEFORE YOU DIG! _
CONTACT ONE -CALL CENTER
755
750
740
HW 001
`STA. 0+00.00
RIM 753.50
IN 745.00
VICINITY MAP
1"=2000'
SITE DATA
PARCEL: 84035
PIN:7887697696
OWNER: GREENS APARTMENT LLC
PROPERTY ADDRESS: 4717 4733 US HIGHWAY 29 N
DB: 8643 PG: 2677
TOTAL SITE AREA: 23.82 ACRES
RIGHT OF WAY DEDICATION: 2A7 ACRES
EFFECTIVE SITE AREA: 21.35 ACRES
ZONING:
EXISTING ZONING: CD RM-18
LAND USE: MULTI-FAMILY/DUPLEX
CROSSING EXHIBIT NOTES:
1. EXISTING GRADES ARE PROVIDED BY TOPOGRAPHIC SURVEY BY FEI
AND NCDOT LIDAR. EXISTING SITE CONDITIONS ARE TO BE VERIFIED
BY CONTRACTOR PRIOR TO CONSTRUCTION.
2. UTILITY INSTALLATION AND IMPACTS SHALL FOLLOW ALL APPROVED
PERMITS.
3. TEMPORARY STREAM CROSSING MATERIAL TO BE REMOVED
FOLLOWING THE COMPLETION OF THE CULVERT CROSSING
INSTALLATION.
4. CONTRACTOR TO VERIFY ELEVATIONS IN STREAM BED PRIOR TO
INSTALLATION. ANY DISCREPANCIES BETWEEN PLAN AND FIELD
CONDITIONS SHOULD BE NOTIFIED TO THE ENGINEER IMMEDIATELY.
TEMPORARY IMPACT SUMMARY:
TEMPORARY STREAM IMPACT
TS 2: 10 LF/ 55 SF
PERMANENT IMPACT SUMMARY:
ZONE 1:
PERMANENT BUFFER IMPACT
PZ 1A:
4,128 SF (0.095 AC)
PZ 1 B:
3,984 SF (0.091 AC)
ZONE 1 TOTAL:
8,112 SF (0.186 AC)
ZONE 2:
PERMANENT BUFFER
IMPACT:
PZ 2A:
1,976 SF (0.045 AC)
PZ 26:
2,262 SF (0.052 AC)
ZONE 2 TOTAL:
4,238 SF (0.097 AC)
PERMANENT STREAM IMPACT:
S1:
136 LF/ 680 SF (0.016 AC)
S2:
30 LF/141 SF (0.013 AC)
TOTAL:
821 SF (0.019 AC)
PERMANENT WETLAND IMPACT:
W1: 357 SF (0.008 AC)
STORMWATER MANAGEMENT INFORMATION
1. THIS PROPERTY IS LOCATED WITHIN FLOOD ZONE X (ZONE X AREAS ARE
DETERMINED TO BE OUTSIDE THE 0.2%ANNUAL CHANCE FLOODPLAIN) AREA
AS INDICATED ON THE FLOOD INSURANCE RATE MAP (FIRM) MAP NUMBER
3710788700J, EFFECTIVE DATE JUNE 18TH, 2007.
2. BUILT UPON AREA (BUA)
TOTAL AREA: 930,079 SF 21.35 ACRES
EXISTING BUA: 103,237 SF 2.37 ACRES (11.10%)
EXISTING BUA TO BE REMOVED: 87,556 SF 2.01 ACRES (9.40%)
PROPOSED BUILT UPON AREA: 280,091 SF 6.43 ACRES (30.12%)
TOTAL BUA: 296,772 SF 6.79 ACRES (31.80%)
3. ALL NECESSARY APPROVALS HAVE BEEN (WILL BE) OBTAINED FROM NCDEQ
AND U.S. ARMY CORPS OF ENGINEERS FOR ANY WETLAND DISTURBANCE
AND STREAM CROSSING/DISTURBANCE WHERE APPLICABLE.
4. ENGINEER'S CERTIFICATION OF STORMWATER QUANTITY CONTROL: THE NET
INCREASE IN BUILT -UPON AREA IS GREATER THAN 400 SQUARE FEET,
THEREFORE, THIS DEVELOPMENT IS SUBJECT TO 30-12-7.2(B)(7)(b) OF THE
GREENSBORO LAND DEVELOPMENT ORDINANCE.
5. ALL PUBLIC STORM SEWER MUST BE INSTALLED PER NCDOT
SPECIFICATIONS.
6. PRIOR TO PUBLIC STORM SEWER INSTALLATION, CONTACT CHAD MANESS AT
[phone] TO SCHEDULE THE ASSIGNMENT OF AN INSPECTOR.
7. STORM AS-BUILTS REQUIRED FOR ALL NEW PIPES 12" AND LARGER. AFTER
TRC APPROVAL, SUBMIT (1) SET OF PLANS TO THE ENGINEERING
DEPARTMENT FOR RECORD PURPOSES. PLEASE CALL [phone] WITH
QUESTIONS.
3 0 1.5 3 6 12
VERTICAL SCALE: 1" = 3'
30 0 15 30 60 120
HORIZONTAL SCALE: 1" = 30'
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