HomeMy WebLinkAboutWQ0039770_Amendment Request_20210526PROTECT NARRATIVE- MODIFICATION
Raleigh -Wilmington Investors, LLC previously permitted the sanitary sewer for a single-family
neighborhood at 1319 Lt. Congleton Road (WQ0039770, 02/13/18). At final build -out the
neighborhood will consist of 170 single family lots and amenities that is served with sanitary sewer
outfalls between two (2) existing Cape Fear Public Utility Authority manholes [Sentry Oaks Pump
Station (SSA-131) to the north and Intracoastal Watch PS (SSA-115) to the south].
The new owner, Clayton Properties Group, Inc., has since revised a minor portion of the
development that has resulted in the need to modify the sanitary sewer network and associated
permitting. The revised total flow numbers for each pump station are as follows. Sentry Oaks PS —
113 lots and amenity (41,634 gpd) and Intracoastal PS — 57 lots (20,520 gpd). The previous
approved permit included 53 lots (19,080 gpd) to the Intracoastal PS. As a result, this modification
only requires permitting an additional 4 lots to satisfy the site changes (1,440 gpd). Also, please note
that the previous approved permit included the flow of 56 lots (20,160 gpd) to Sentry Oaks PS
which will remain and not be affected by this modification. The total flow for the site, all of which
is going to Mckean-Maffit Wastewater Treatment Plant, has not changed.
The previously permitted gravity sewer line length was 8,0601f. The site changes have resulted in
needing 8,4501f of total gravity sewer; therefore, please find that this modification includes 3901f to
make up the difference.
High Priority Line:
Please find on Plan and Profile Sheet C-5.9 an aerial crossing that is deemed to be high priority
between SSMH#7A and SSMH#7B. The crossing is achieved according to CFPUA's requirements
for aerial crossings (specifications and details) and is 281f in length by way of a single stick of 8"
DIP with piles and bent.
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DETAIL. SEE DETAILS. —
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SEWER 1 - PLAN VIEW
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ACCORDING TO CFPUA PILE
BENT DETAIL (SEE DETAIL)
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SERVICE NOTE:
1. CONTRACTOR SHALL INSTALL ONE (1) 1-INCH WATER
SERVICE PER LOT AND ONE (1) 4-INCH SEWER
SERVICE PER LOT.
CAPE FEAR PUBLIC UTILITY AUTHORITY STANDARD SEWER NOTES:
1. SEWER GUARDS REQUIRED AT ALL MANHOLES. STAINLESS STEEL SEWER
GUARDS REQUIRED AT MANHOLES LOCATED IN TRAFFIC AREAS.
2. WATER AND SEWER SERVICES SHALL BE PERPENDICULAR TO MAIN AND
TERMINATE AT R/W LINE. SEWER SERVICES IN CUL-DE-SACS ARE REQUIRED
TO BE PERPENDICULAR, OR MUST ORIGINATE IN END OF LINE MANHOLE AND
TERMINATE AT RIGHT-OF-WAY LINE.
3. ALL SERVICES TYING INTO DUCTILE IRON MAINS SHALL BE CONSTRUCTED
OF CLASS 50, DIP, WITH PROTECTO 401 CERAMIC EPDXY LINING.
4. MINIMUM 10' UTILITIES EASEMENT PROVIDED ALONG THE FRONTAGE OF ALL
LOTS AND AS SHOWN FOR NEW DEVELOPMENTS.
5. NO FLEXIBLE COUPLINGS SHALL BE USED.
6. ALL STAINLESS STEEL FASTENERS SHALL BE 316.
7. CLEANOUTS SHALL BE LOCATED A MINIMUM OF 12 FEET FROM ALL
PROPERTY CORNERS. WATER METER BOXES ARE TO BE A MINIMUM OF 5
FEET FROM THE PROPERTY CORNER.
SEWER 1 - PROFILE VIEW
HORIZONTAL SCALE: 1 "=50'
VERTICAL SCALE: 1 "=5'
15+00
16+00
UTILITY NOTES: (NCAC 15A.02T.0305 / T1 5A. 1 8C.0906)
1. WATER MAINS SHALL BE LAID SO AS TO PROVIDE A MINIMUM HORIZONTAL SEPARATION OF 10 FEET
FROM SEWERS. IF CONDITIONS EXIST SUCH THAT THIS SEPARATION CANNOT BE ACHIEVED, THE
WATER MAIN CAN BE INSTALLED AT LEAST 18 INCHES ABOVE THE TOP OF THE SEWER, EITHER IN A
SEPARATE TRENCH, OR IN THE SAME TRENCH ON A BENCH OF UNDISTURBED EARTH.
2. WHEN CROSSING A WATER MAIN OVER A SEWER, THE WATER MAIN SHALL BE LAID AT LEAST 18
INCHES ABOVE THE SEWER. IF CONDITIONS EXIST SUCH THAT THIS SEPARATION CANNOT BE
ACHIEVED, BOTH THE WATER MAIN AND SEWER SHALL BE CONSTRUCTED OF DUCTILE IRON PIPE WITH
JOINTS THAT MEET WATER MAIN STANDARDS. THE DUCTILE IRON PIPE SHALL EXTEND 10 FEET ON
EACH SIDE OF THE CROSSING WITH A SECTION OF WATER MAIN PIPE CENTERED ON THE CROSSING.
3. CROSSING A WATER MAIN UNDER A SEWER. WHENEVER IT IS NECESSARY FOR A WATER MAIN TO
CROSS UNDER A SEWER, BOTH THE WATER MAIN AND THE SEWER SHALL BE CONSTRUCTED OF
FERROUS MATERIALS AND WITH JOINTS EQUIVALENT TO WATER MAIN STANDARDS FOR A DISTANCE
OF 10 FEET ON EACH SIDE OF THE POINT OF CROSSING. A SECTION OF WATER MAIN PIPE SHALL BE
CENTERED AT THE POINT OF CROSSING.
4. WHERE VERTICAL CLEARANCE IS LESS THAN 24" BETWEEN SANITARY SEWER AND STORM DRAIN,
SANITARY SEWER SHALL BE DUCTILE IRON PIPE FOR A MINIMUM OF 10, EITHER SIDE OF CROSSING
AND STORM DRAIN SHALL BE RC PIPE.
5. WHERE VERTICAL CLEARANCE IS LESS THAN 18" BETWEEN WATER MAIN AND STORM DRAIN, WATER
MAIN SHALL BE DUCTILE IRON PIPE FOR A MINIMUM OF 10' EITHER SIDE OF CROSSING AND STORM
DRAIN SHALL BE RC PIPE.
17+00
SEE SHEET C-5.6
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CLASS 2.5 CCA
TREATED BEAM
SALT WATER
CONTACT
1"0 SST. U-BOLT WITH 3"x3"x1/8" SST.
SQ. FLAT WASHER & SST. LOC--NUT
r-1/8'x4" NYLON STRAP
COMPLETE AROUND PIPE
H A
SNAP LOCK 401 PROTECTO
MANHOLE SEE SECTION A -A
CERAMIC LINED DIP SEWER THIS SHEET
MAIN (CL 54) SET ON
GRADE, AS PER PLANS. PILE AND BENT PLAN
NOT TO SCALE
NOTES: ES AND PILE DRIVING SHALL CONFORM TO NCDOT STANDARD SPECIFICATIONS
FOR ROADS AND STRUCTURES, JANUARY 20OZ SECTIONS 445, 450, 1082-2 &
1084-2.
2. CENTERLINE OF BOLTS TO BE A MINIMUM OF 3" FROM OUTSIDE EDGE OF TIMBER.
BOLTS TO BE A MINIMUM OF 3" CENTERLINE TO CENTERLINE.
3. ALL STAINLESS STEEL SHALL BE 316. STAINLESS STRAP TO BE COLD FORMED.
4. PILE SHALL NOT OBSTRUCT FLOW OR CAUSE EROSION OF DITCH/STREAM BANK.
5. MIN. CLASS 54 DIP -ENGINEER MUST DESIGN LOADING.
S. DESIGN SHALL BE APPROVED BY CFPUA.
SEE SECTION A -A L MANHOLE
INSET, THIS SHEET_ — SNAP LOCK 401
PROTECTO CERAMIC
LINED DIP SEWER MAIN
(CL 54) scr ON GRADE,
AS PER PLANS. -
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TREATED PILE 5
PIPE LAYING LENGTH,
SALT WATER I NOT TO EXCEED , 5
CONTACT 18' WITHOUT APPROVAL MAX.,
FROM THE CFPUA���`\�
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PILE AND BENT SECTION A -A
NOT TO SCALE
FORCE MAIN PIPE
1"0 SST. U-BOLT WITH 3%3"0/8" SST
SQ. FLAT WASHER & SST. LOC-NUT
2' 2'i
1/8'x4" NYLON STRAP
COMPLETE AROUND PIPE
it II It :;rWASHIER
(2) 5/8" STAINLESS
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2"x2"x1 /8" SST. SO.
II II AND LOCK NUTS
2"x12" CLASS 2.5 2"x12"x V (MIN) CLASS
CCA TREATED 2.5 CCA TREATED BEAM
BEAM SALT SALT WATER CONTACT
WATER CONTACT
8'x8'x8' (MIN) GLASS
2.5 CCA TREATED PILE
PILE AND BENT SECTION B-B SALT WATER CONTACT
NOT TO SCALE
1"0 SST. U-BOLT WITH 3"x3"x1/8"
1.0' MAX. SST. SQ. FLAT WASHER & LOC-NUT
"
COMPLETE AROUND PIPE 1/8x4" NYLON STRAP
2"x12'x4' (MIN) CLASS W
(2) 5/8" STAINLESS STEEL BOLTS WITH
2.5 CCA TREATED BEAM2-x2"x1/8" SST SO. WASHER AND LOCK NUTS
SALT WATER CONTACT8'x8'x8' (MIN) CLASS2"x12%4' (MIN) CLASS 2.5 CCA
2.5 CCA TREATED PILETREATED BEAM SALT WATER CONTACT
SALT WATER CONTACT
PILE AND BENT SECTION A -A INSET
NOT TO SCALE
PILE AND BENT DETAIL
SD-20 NOT TO SCALE
TRACER HARE SHALL PENETRATE
VALVE BOX APPROXIMATELY 6" BELOW
GRADE WITH MIN. 2' EXTRA LENGTH
COILED IN THE VALVE BOX
TRACER WIRE
LOCATOR BOX
(1,000' MAX.
GATE VALVE
TRACER WIRE
FORCE MAIN PIPE
EXISTING GRADE
VALVE BOX
DUCTILE IRON TEE FITTING.
ATTACH TRACER WIRE USING
DUCT TAPE (TYP)
----DUCTILE IRON CROSS
° FITTING (ATTACH TRACER
WIRE USING DUCT TAPE)
ATTACH TRACER WIRE TO
FITTING USING DUCT TAPE
(TYP.)
11.�TTRACER WIRE SHALL BE #10 COPPER SOLID CORE COPPER WIRE WITH GAS AND OIL
RESISTANT INSULATION.
2. WIRE SHALL BE STRAPPED TO ALL PVC FORCE MAIN PIPING WITH DUCT TAPE AT 12 FOOT
INTERVALS ALONG THE PIPE.
3. SECURE WIRE TO ALL TEE AND CROSS FITTINGS WITH DUCT TAPE.
4. ALL SPLICES IN THE WIRE SHALL BE MADE WITH 3M DBR DIRECT BURY SPLICE KIT AN
UNDERGROUND RATED, WATERTIGHT, AND APPROVED SPLICE CONNECTOR OR APPROVED
EQUAL
TRACER WIRE DETAIL
SD-21 NOT TO SCALE
INSET
STORM NOT TO SCALE \
SEWER \�\
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FORM CRADLE, \
FILL VOID WITH A,
3000 PSI (MIN)
CONCRETE a ,. •° $. STORM , SEE INSET f MIN,
SEWER
\
DIA. OF\
STORM SEWER \
PIPE
GATE VALVES REQUIRED ON
EITHER SIDE OF THE
CROSSING IF TOTAL
VERTICAL OFFSET FROM
EXISTING PIPE ALIGNMENT
IS GREATER THAN 24"
45 BEND
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SANITARY
SEWER PIPE
3'MIN. #COVER
8" MIN.
57 STONE BEDDING
AS NEEDED TO
STABILIZE FOUNDATION
NOTE: NO JOINTS ON STORM DRAIN
PIPES ARE ALLOWED BETWEEN PIERS
UNLESS JOINTS ARE BELL AND
SPIGOT COLLAR WITH FABRIC WRAP.
STORM
SEWER
.�- 57 STONE
CONCRETE FOOTING/PIER
(OR CONC. BLOCK FILLED
WITH CONC.)
SANITARY SEWER
57 STONE BEDDING
AS NEEDED TO
STABILIZE FOUNDATION
6" MIN. FROM
EDGE OF PIPE
THE FOLLOWING MUST BE FOLLOWEr} IN ,]BE CASES OF GRAVITY
SEWER UNDER -STORM DRAIN:
• A SEPARATION OF LESS THAN 12" BETWEEN STORM DRAIN
AND GRAVITY SEWER, STORM DRAIN MUST BE BRIDGED.
• A SEPARATION OF 12"TO LESS THAN 24"BETWEEN STORM
DRAIN AND GRAVITY SEWER, GRAVITY SEWER CAN BE DIP OR
STORM DRAIN CAN BE BRIDGED. (PER DWR REGULATIONS)
• A SEPARATION OF 24' OR GREATER BETWEEN STORM DRAIN
AND GRAVITY SEWER REQUIRES NO BRIDGING OR DIP.
STRUCTURAL BRIDGING DETAIL FOR STORMWATER OVER GRAVITY
SEWER INSTALLATIONS WITH LESS THAN 12" SEPARATION
NOT TO SCALE
10' MIN. . i--[-10' MIN. V-LOWER THRUST BLOCKS REQUIRED
MEG-A-LUGS ON EITHER SIDE OF THE CROSSING
THROUGHOUT IF TOTAL VERTICAL OFFSET FROM
EXISTING PIPE ALIGNMENT IS
GREATER THAN 24'
NOTE: USE D.I.P. (CL50 OR BETTER)
FORCE MAIN DITCH
AND STORM DRAIN CROSSING
NOT TO SCALE
REV-
DESCRIPTION:
DATE:
1
ADDED NOTES TO THE STRUCTURAL BRIDGING DETAIL
03111/15
2
Revised Tracer Wire Detail
10120/15
3
Revised Farce Main Ditch and Storm Drain Crossing Detail
02115/16
GENERAL- NOTES:
1. NO EXCAVATED MATERIAL SHALL BE PLACED IN ANY STREAM, DITCH OR DRAINAGE -WAY.
2. THE CONTRACTOR IS RESPONSIBLE FOR LOCATING ALL UNDERGROUND UTILITIES BEFORE
ANY CONSTRUCTION BEGINS.
3. THE CONTRACTOR IS RESPONSIBLE FOR TEMPORARY SEDIMENT AND EROSION CONTROL
MEASURES WHILE CONSTRUCTION IS IN PROGRESS.
4. THE CONTRACTOR IS RESPONSIBLE FOR STABILIZATION OF ALL DISTURBED AREAS.
5. THE CONTRACTOR IS RESPONSIBLE FOR LAY DOWN AND STOCKPILE AREAS (TO ARRANGE
AND ENSURE COMPLIANCE WITH ALL LOCAL AND STATE REGULATIONS).
THE DETAILS SHOWN HEREON SUPERCEDE CFPUA
WRITTEN TECHNICAL SPECIFICATIONS VERSIONS 1.00 -1.04
CFPUA SANITARY SEWER
STANDARD DETAILS
CAPE FEAR PUBLIC UTILITY AUTHORITY
235 GOVERNMENT CENTER DRIVE
WILMINGTON, NO 2M3
OFFICE: (910)332-6560
Ste ardship. Sustainabildy. Sermce.
DATE:
1/9112
SCALE
NIA
DRAWN BY,
CFPUA
CHECKED BY:
CFPUA
PROJECT NO_
SHEET NO:
SSD-3
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