SW3140202_APPROVED PLANS_20140402

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO. SW
DOC TYPE ❑ CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYM M D D

Development Standards:
1. General Provisions:
These Development Standards are a part of the Preliminary Subdivision Plan associated with the Conditional District Zoning
application filed by Shea Home to accommodate a single-family residential development on this site (the "Site"). Development of
the Site will be governed by the Conditional District Site Plan, these Development Standards and the applicable provisions of the
Waxhaw Unified Development Ordinance (the "UDO"). Unless the Conditional District Site Plan or these Development Standards
establish more stringent standards, the regulations established under the LIDO for the CD R-4 (Conditional District Single-family
Residential) zoning classification shall govern all development taking place on the Site.
'The lot configurations, placements, and sizes shown on the Preliminary Subdivision Plan are schematic in nature and may be
altered or modified during the design development and construction document phases within the maximum development limits
established by buffers and setbacks. Such changes will be subject to review and approval by the Zoning Administrator to ensure
any changes are consistent with the overall intent of the Preliminary Subdivision Site Plan, and any such changes are subject to
A and may also be approved in accordance with Section 16.2.9 of the UDO.
2. Permitted Uses Buildings:
Single-family residential. Additionally, Accessory Structures, Home Occupations, and Subdivision Sales Offices shall be
permitted in accordance with the applicable Supplemental Regulations.
3. Maximum Development:
A maximum 54 single-family lots may be developed on the Site.
4. Setbacks Side Yards and Rear Yards:
All buildings constructed on the Site shall satisfy or exceed the setback, rear yard and side yard requirements established under
the UDO for the R4 zoning district.
5. Parking:
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A. Parking shall be provided in accordance with Section 12.3 of the UDO. Parking will only be allowed on one side of streets with
40' ROW. Parking enforcement will be conducted by the HOA. Speed limit will also be restricted to 25 MPH.
B. Each cul-de-sac will have a minimum of 87' W at the R.O.W. and 67' W pavement per 18.9.2 of the UDO.
6. Flood Plain Information:
Flood Certification: This is to certify that the subject property is not located in a special flood hazard area as shown on maps
prepared by the Federal Emergency Management Agency, Federal Insurance Administration, dated October 16, 2008, comm.
panel no. 3710446400J.
7. Stormwater Management:
A. Storm water quantity control shall follow the requirements set forth in the Town of Waxhaw Stormwater Design Manual.
B. The location, size, and type of stormwater management systems depicted on the Conditional District Site Plan are subject to
review and approval at the time of full plan submittal. Adjustments may be necessary in order to accommodate stormwater
treatment requirements and natural site discharge points.
C. This project is required to meet Phase 2 Stormwater Requirements.
8. Lighting:
Exterior lighting shall comply with Section 12.12 of the LIDO. The quality of street lights installed by the Petitioner shall be
compatible with adjacent neighborhoods (match or closely resemble existing street lights).
9. Vehicular Access:
A. Vehicular access to the Site shall be as generally depicted on the Preliminary Subdivision Plan. The placement and
configuration of these access points are subject to modifications required to accommodate final site and architectural
construction plans and designs and to any adjustments required for approval by the Town of Waxhaw and NCDOT. All turning
radii shall be constructed so as to be accessible by emergency vehicles.
B. In accordance with the Town of Waxhaw regulations, a temporary turn -around shall be provided at the end of each phase of
construction as needed.
10. Architectural Controls:
A. Schematic architectural renderings of the elevations of the buildings and improvements proposed to be constructed on the site
submitted with the Preliminary Subdivision Plan are intended to depict the general conceptual architectural style, character and
elements of the proposed buildings and improvements. Accordingly, the proposed buildings and improvements shall be
designed and constructed so that they are substantially similar in appearance to the schematic architectural renderings.
Changes and alterations which do not materially change the overall conceptual architectural style and character are permitted
based upon final design/construction drawings.
B. Vinyl siding will not be a permitted exterior building material. Homes will contain exterior material elements that will consist of
brick, stone, or Hardi plank.
,.The maximum building height of all proposed structures shall be 2 stories.
D. All garages should be side -loaded or front -loaded and front -loaded garages shall not exceed more than 4' from the front
facade.
E. The homes will be marketed from a sales center located in the community. The location of the sales center shall be determined
at a later date. Parking will be provided in accordance with any local requirements.
F. All homes will be on a slab, crawl space, or basement foundation. The exposed front foundation will be brick, stone, stucco, or
other masonry veneer.
G.Minimum main structure roof pitch shall be 6:12 ratio as approved by the Zoning Administrator Section 20.4.1.A.3 of the LIDO.
H. The nearest lot upon which a particular front fagade elevation can be repeated on the same side of the street is the fifth in a
sequence starting from the original lot. The nearest lot upon which a particular elevation can be repeated on the opposing side
of the street is the third in a sequence starting from the original lot. If there is any question regarding approval of a building
elevation location or repetition the builder is required to obtain approval from the Administrator prior to construction, in
accordance with Section 20.4.1.A.12 of the LIDO.
11. Pedestrian and Bicycle Circulation:
Sidewalks of at least 5 feet in width shall be provided along proposed streets as generally depicted on the Preliminary Subdivision
Plan.
12. Internal Landscaping:
A. Tree planting locations depicted on the Preliminary Subdivision Plan are preliminary and may be altered or modified to
accommodate changes to the plan.
B. On any site where 20% or more of the site has existing trees present, a minimum of 20% of the internal property area shall be
preserved with existing trees within the site interior.
C. Interior tree protection areas shall contain no less than one (1) tree per 2500 square feet of tree protection area. Where existing
trees are insufficient to meet these standards, new trees shall be planted to meet this minimum standard. New trees shall be a
minimum of two (2) inch caliper at planting.
13. Tree Preservation and Mitigation:
A. Tree preservation and mitigation will be delineated through a collaborative process between the Zoning Administrator,
developer, and a North Carolina registered urban forester, registered landscape architect, or ISA certified arborist.
Collaboration between these parties will promote appropriate tree preservation measures for the Site and will strike an
appropriate balance of tree protection, preservation, and planting in an urban environment while accomplishing the overall
intent of the UDO.
B. Where new tree plantings are proposed within the Site the Petitioner shall utilize sustainable planting practices (soil
enhancements, structural soil, etc.) to ensure that newly planted trees are provided an optimal growing environment.
C. Existing tress eight (8) inches or larger DBH and understory trees four (4) inches or larger DBH shall be preserved within 30
feet of the exterior perimeter of any subdivision.
D. Any tree preservation area located within a lot shall have a tree preservation easement.
14. Tree Protection Fencing:
During development, the owner or developer shall be responsible for the erection of any and all barriers necessary to protect any
existing or installed trees from damage both during and after construction. The tree protection fencing shall be clearly shown on
the site plan or subdivision plan, and shall be maintained until the final site inspection prior to the Certificate of Occupancy is
scheduled.
15. Common Open Space:
All common open space shall be recorded and deeded to the Home Owners Association.
16. Signage:
All proposed entry signage shall comply with section 13 of the Town of Waxhaw LIDO.
17. Street Trees:
Street trees shall be placed 40'-60' on center. They shall be placed within 25' of back of curb and outside of R.O.W. no closer
than 4' from sidewalk.
At the October 8, 2013 meeting of the Board of Commissioners, the public hearing was held for CD-001013-2013 and the Board
placed the following conditions to CD-001013-2013 while approving the conditional zoning at its October 22, 2013 meeting:
1. A barricade will be installed and remain at the connection point from the Site to Cutters Springs Drive until the streets are turned
over to the Town of Waxhaw and no petition for street acceptance will be made until 90% of the lots within the Site have been
issued a Certificate of Occupancy by the Town of Waxhaw.
2. A barricade will be installed and remain at the eastern end of Fairgreen Avenue to provide for a future connection to Providence
Road.
3. When the street connection from the Site to Cutters Springs Drive is made, if permitted by the Town of Waxhaw and NCDOT, the
Developer will install traffic calming island on the Site within the right-of-way of Cutters Springs Drive.
4. Prior to the issuance of the tenth (loth) Certificate of Occupancy for homes within the Site, the Petitioner shall pay for the greater
of (i) installing up to fourteen (14) speed humps or stop signs or (ii) $25,200 to the Town of Waxhaw to be used to mitigate traffic
impacts related to the new street connection from the Site to Cutter Springs Drive.
5. Prior to the issuance of a Certificate of Occupancy for the 20th lot within the Site, the Petitioner shall make a $2,500 monetary
contribution to the Park Providence Homeowner's Association.
6. In order to limit impacts to the Barrington neighborhood, construction traffic serving the Site will be directed to access the Site by
using the northern most connection point between Twinberry Lane and the Site.
7. Section 20 of the UDO as it exists at the time of approval will govern this subdivision along with the additional architectural
requirements provided in conjunction with the conditional zoning plan. The architectural renderings accompanying the rezoning
plan shall be base designs and additional home designs or home elevations that meet or exceed the architectural features set
forth, therein may be approved by the Zoning Administrator. However, brick shall be used as the main exterior material on four
sides of all homes, and no homes shall be less than 2800 square feet.
8. BMPs on the Site shall be maintained by the Developer until they are no longer being used as sediment control devices and are
approved by the Town Planning Department. When Developer converts the ponds for permanent use the Developer will provide
a certification from the design engineer that they are built as designed.
9. Comply with terms and conditions (including the seventeen (17) notes) of the Site Plan dated June 18, 2013 and revised
September 6, 2013.
General Notes:
of Waxhaw Unified Development Ordinance (UDO).
1. All work and materials shall conform to the latest edition of the Town p ( )
2. All work and materials shall conform to the latest edition of the North Carolina Department of Transportation (NCDOT) standard
specifications for roads and structures unless otherwise specified by the Town of Waxhaw land development standards.
3. All public streets within the development will be constructed to Town of Waxhaw standards in order to be dedicated public right of
ways.
4. The developer shall make a diligent effort to preserve areas of required tree save buffers where significant vegetation exists.
These areas shall remain undisturbed, removal of existing trees within protection zone without a permit will result in penalties and
mitigation requirements by the Town of Waxhaw per Section 9.21 of LIDO.
5. Contractor shall coordinate all curb and street grades in intersection with inspector.
6. In order to ensure proper drainage, curb shall have a minimum of 0.5% slope. Curb and gutter on the plans may be adjusted
based on field staking by project engineer and upon approval of the town engineer.
7. Developer will provide street signs per MUTCD standard.
8. Town Engineer shall be given 48 hours notice prior to construction.
9. Sight triangles shown are the minimum required. Further requirements may be made by North Carolina Department of
Transportation (NCDOT).
10. Non-standard items (i.e.: pavers, irrigation, etc.) in the right of way require encroachment agreement prior to installation.
11. Any building within the 100+1 building restriction floodline is subject to the restrictions of the Town of Waxhaw Unified
Development Ordinance (UDO.
12. All concrete shall have a minimum compressive strength of 3600 p.s.i. at 28 days and shall comply with section 1000 of the
NCDOT standard specifications.
13. All concrete shall be cured with 100% resin base, white pigmented curing compound which meets A.S.T.M. specifications o-309,
type 1, applied at one gallon to 400 sf within 24 hours of placement of concrete.
14. All curb and gutter shall be backfilled with soil approved by the inspector 48 hours after construction to prevent erosion.
15. All backfill shall be non -plastic in nature, free from roots, vegetative matter, waste, construction material, or other objectionable
material. Said material shall be capable of being compacted by mechanical means and the material shall have no tendency to flow
or behave in a plastic manner under the tamping blows or proof rolling
16. All trenches in the street right of way shall be backfilled and compacted in 1' lifts with suitable material immediately after the pipe is
laid.
17. All subgrade for roads shall be compacted to 100% of the maximum density obtainable with the standard procter test.
18. All tests shall be performed by the developer at no cost to the Town of Waxhaw.
19. Contractor shall maintain two way traffic at all times when working within existing streets. The contractor shall place and maintain
signs, danger lights, barricades, and furnish watchmen or flagmen to direct traffic in accordance with the manual on uniform traffic
control devices (MUTCD).
20. Sidewalks shall be constructed of not less than 3600 psi concrete and shall be four (4) inches thick, constructed on an adequately
graded base, except where a sidewalk crosses a driveway it shall be six (6) inches thick.
21. Subgrade for sidewalks shall be compacted to 95% of the maximum density obtainable with the standard procter test. the surface
of the sidewalk shall be steel trowel and light broom finished and cured with an acceptable curing compound. Tooled joints shall
be provided at an interval not less than five (5) feet and expansion joints at intervals not more than 45 feet. The sidewalk shall
have a lateral slope of 1/4" per foot.
22. The elevation of the sidewalk shall be related to the elevation of the crown of the adjacent roadway.Tthe sidewalk shall be no less
than six (6) inches or more than (18) inches above the roadway crown, except that the crosswalk elevations shall be properly
related to the existing or proposed roadway curb.
23. In rolling and hilly terrains, sweeping of the stone base and/or application of a tack coat may be required near intersections. these
requirements will be established Li the inspector based on field conditions.
24. Utility installations may only cross buffer areas at interior angles measured at property lines which are not less than 75 degrees
and, to the extent possible, paths cleared for such utility lines shall be replanted with plant materials from the ordinances approved
plant list.
25. No buildings, parking spaces or maneuvering areas may be located within any buffer areas.
26. The purpose of the storm drainage easement (SDE) is to provide storm water conveyance and any structures and/or obstruction
to storm water flow is prohibited.
27. Under drainage shall be provided as directed by geo-technical engineer. Determination shall be made in the field. Drains to be
installed per NCDOT detail #815.03.
28. All storm boxes and storm pipe to be provided by NCDOT approved manufacturer. Dot stamped boxes and dot stamped pipe will
not be required for this project.
de and aggregate base material shall be performed b the contractor in the presence
29. Proof rolling of street subgrap y p ce of town Staff.
General guidelines and procedures for proof rolls are outlined in the Town of Waxhaw Proof Roll Guidelines document. The
developer is responsible for all fees associated with proof rolls.
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Know what's below.
Call before you dig.
1. Contractor is fully responsible for contacting appropriate parties and assuring that existing
utilities are located prior to beginning construction.
2. Contractor is responsible for placing barricades, using flag men, etc. As necessary to
ensure the safety of the public.
3- All pavement cuts, asphalt or concrete, are to be placed according to standards of the north
carolina department of transportation and town specifications.
4. Shoring will be according to osha trenching standards part 1926, subpart p, or as amended
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LEGEND:
SYMBOL
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PROPOSED CONTOUR
RIGHT OF WAY
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REFER TO SHEET C401 FOR NOTES
KEYNOTES:
OPROPOSED CATCH BASIN PER NCDOT 840.01 REFER TO
SHEET C801
OPROPOSED STORM DRAIN MANHOLE PER NCDOT 840.51
REFER TO SHEET C802
©PROPOSED RIP -RAP APRON PER NCDENR REFER TO
DETAIL C803
OPROPOSED YARD INLET PER NCDOT DETAIL 840.05 REFER
TO SHEET C801
O PROPOSED DETENTION STRUCTURE REFER TO WATER
QUALITY PLANS
O PROPOSED FLARED END SECTION REFER TO DETAIL C801
PROPOSED EROSION CONTROL BLANKET NORTH
OAMERICAN GREEN OR APPROVED EQUAL. (INSTALL FULL
G LENGTH OF DITCH AND UP SIDE SLOPE PER
MANUFACTURER DIRECTION) REFER TO DETAIL.
O PROPOSED COMPOSI
TE TURF REINFORCEMENT MAT
H
NORTH AMERICAN GREEN G350 OR APPROVED EQUAL.
Oj RETAINING WALLS DESIGNED BY OTHERS
A
Know what's below.
CBII before you dig.
1. Contractor is fully responsible for contacting appropriate parties and assuring that existing
utilities are located prior to beginning construction.
2. Contractor is responsible for placing barricades, using flag men, etc. As necessary to
ensure the safety of the public.
3. All pavement cuts, asphalt or concrete, are to be placed according to standards of the north
Carolina department of transportation and town specifications.
4. Shoring will be according to osha trenching standards part 1926, subpart p, or as amended
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GRADING AND DRAINAGE NOTES
1.
REFER TO EROSION CONTROL PLANS FOR EROSION
EXCEPT TO NOT REDUCE GRADE TO LESS THAN 2% AND TO
CONTROL NOTES THAT PERTAIN TO ANY DISTURBING
CHANGE DRAINAGE PATTERNS TO STORM STRUCTURES
ACTIVITY ON THIS SITE.
12.
ANY RETAINING WALLS TO BE DESIGNED, SEALED AND
2.
EARTHWORK QUANTITIES HAVE NOT BEEN ESTIMATED AND
CERTIFIED BY CONTRACTOR'S STRUCTURAL ENGINEER
SITE AS SHOWN IS NOT ASSUMED TO REPRESENT A
BALANCED CUT/FILL CONDITION.
13.
NON-STANDARD ITEMS (IE: PAVERS, IRRIGATION SYSTEMS,
ETC.) IN THE RIGHT-OF-WAY REQUIRE A LOCAL OR STATE
3.
CONTRACTOR SHALL PERFORM HIS OWN ESTIMATES AND
ENCROACHMENT AGREEMENT PRIOR TO INSTALLATION.
SHALL PROVIDE ALL EARTHWORK NECESSARY TO ACHIEVE
THE DESIGN GRADE, INCLUDING ANY OFFSITE BORROW OR
14.
ON -SITE BURIAL PITS REQUIRE A PERMIT.
SPOILS REQUIRED. CONTRACTOR SHALL PROVIDE POSITIVE
DRAINAGE IN ALL GRADED AREAS, INCLUDING PAVING, LAWN
15.
APPROVAL OF CONSTRUCTION DOCUMENTS IS NOT AN
AND LANDSCAPE AREAS.
AUTHORIZATION TO GRADE ADJACENT PROPERTIES. WHEN
FIELD CONDITIONS WARRANT OFF -SITE GRADING,
4.
THE CONTRACTOR SHALL IMMEDIATELY REPORT TO OWNER
PERMISSION SHALL BE OBTAINED BY CONTRACTOR FROM
ANY DISCREPANCIES FOUND BETWEEN ACTUAL FIELD
THE AFFECTED PROPERTY OWNERS.
CONDITIONS AND CONSTRUCTION DOCUMENTS AND SHALL
WAIT FOR INSTRUCTION PRIOR TO PROCEEDING.
16.
IN ORDER TO ENSURE PROPER DRAINAGE, CONTRACTOR
SHALL MAINTAIN A MINIMUM SLOPE OF 0.5%, ALL LOTS TO
5.
CONTRACTOR SHALL VERIFY LOCATION OF ALL
HAVE 2% POSITIVE DRAINAGE IN ALL DIRECTIONS
UNDERGROUND UTILITIES PRIOR TO BEGINNING WORK, BOTH
PUBLIC AND PRIVATE. CONTRACTOR IS FULLY RESPONSIBLE
17.
SUBSURFACE DRAINAGE FACILITIES MAY BE REQUIRED IN
FOR ALL UNDERGROUND UTILITIES AND SHALL REPAIR ANY
THE STREET RIGHT-OF-WAY IF DEEMED NECESSARY BY THE
DAMAGE AS A RESULT OF THIS CONTRACT.
INSPECTOR.
&CONTRACTOR
SHALL BLEND NEW EARTHWORK SMOOTHLY
18.
THE CONTRACTOR SHALL MAINTAIN EACH STREAM CREEK,
TO TRANSITION BACK TO EXISTING GRADE.
OR BACKWASH CHANNEL IN AN UNOBSTRUCTED CONDITION
AND SHALL REMOVE FROM THESE AREAS ALL DEBRIS, LOGS,
7.
THE PROPOSED CONTOURS AND SPOT ELEVATIONS SHOWN
TIMBER, TRASH, JUNK AND OTHER ACCUMULATIONS.
IN DRIVES, PARKING LOTS AND SIDEWALKS ARE FINISHED
ELEVATIONS INCLUDING ASPHALT. REFER TO PAVEMENT
19.
THE LOCAL ENGINEERING DEPARTMENT HAS NOT REVIEWED
CROSS SECTION DATA TO ESTABLISH CORRECT SUBBASE OR
AND DOES NOT ASSUME RESPONSIBILITY FOR THE
AGGREGATE BASE COURSE ELEVATIONS TO BE COMPLETED
STRUCTURAL STABILITY OF ANY EXISTING OR PROPOSED
UNDER THIS CONTRACT.
RETAINING WALLS ON THE SITE.
8.
ANY GRADING BEYOND THE DENUDED LIMITS INDICATED ON
20.
NON-STANDARD ITEMS (IE: PAVERS, IRRIGATION SYSTEMS,
THE CONSTRUCTION DOCUMENTS IS A VIOLATION AND IS
ETC.) IN THE RIGHT-OF-WAY REQUIRE A LOCAL OR STATE
SUBJECT TO FINE. GRADING MORE THAN ONE ACRE WITHOUT
ENCROACHMENT AGREEMENT PRIOR TO INSTALLATION.
AN APPROVED EROSION CONTROL PLAN IS A VIOLATION AND
IS SUBJECT TO A FINE.
21.
CONTRACTOR SHALL CONTACT TOWN OF WAXHAW 48 HOURS
BEFORE CONSTRUCTION.
9.
CROSS SLOPE OF SIDEWALKS SHALL BE 1/4"/FT. (MAX).
22.
SHALL NOT BE PERMITTED TO INSTALL ANY STRUCTURES,
10.
PIPE LENGTHS SHOWN ON CULVERTS INCLUDE FLARED END
INCLUDING FENCES, SHEDS OR OTHER PHYSICAL
SECTIONS.
STRUCTURES THAT IMPEDE THE FLOW OF STORMWATER
RUNOFF THROUGH THE SWALES THAT RUN THROUGH AND
11.
BORROW PIT/SPOIL AREAS AND VOLUMES AS SHOWN ON
ALONGSIDE SAID PROPERTIES. AN EXCEPTION TO THIS IS
THESE PLANS ARE AN APPROXIMATION. THEREFORE THEY
ANY FENCE THAT PROVIDES AT LEAST 6" OF STORMWATER
MAY BE EXTENDED, ADJUSTED OR MODIFIED ACCORDINGLY
FLOW THAT PASSES BENEATH THEREFORE ALLOWING
AT THE DISCRETION OF THE CONTRACTOR EXCEPT AS
UNOBSTRUCTED STORMWATER RUNOFF
LIMITED BY THE DENUDED LIMITS AND BUILDABILITY OF
ONSITE FEATURES (SUCH AS THE BUILDINGS). CONTRACTOR
SHALL SPOIL EXCESS MATERIAL ON THIS AREA AS SEEN FIT,
Storm Schedule
KEYNOTES:
PROPOSED CATCH BASIN PER NCDOT 840.01 REFER TO�-
SHEET C801 _
I If
\ 1 _
PROPOSED STORM DRAIN MANHOLE PER NCDOT 840.51 - `\ `\ \ \- 4' / r- - !-'i- - TWirnberrytn,
o \ \ Barrington _
REFER TO SHEET C802 \
OPROPOSED RIP -RAP APRON PER NCDENR REFER TO
DETAILC803 \ ,II i ,' i - Subdivision
\ / /
� I
D PROPOSED YARD INLET PER NCDOT DETAIL 840.05 REFER 51 wt. I H ..
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cF s
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E PROPOSED DETENTIONS I \ y
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z,
F PROPOSED FLARED END SECTION REFER TO DETAIL C801
y , o
PROPOSED EROSION CONTROLBLANKET NORTH
AMERICAN GREEN OR APPROVED EQUAL. (INSTALL FULL
G LENGTH OF DITCH AND UP SIDE SLOPE PER
0
I
MANUFACTURER DIRECTION) REFER TO DETAIL.
PROPOSED COMPOSITE TURF REINFORCEMENT MAT
L. _ 580
NORTH
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5 i. \. r 590
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600
- 1B ! ' 16
,�O C:, 11-MH
MCD ' I _ _� ___. _ , / -,,• y,
14 L V
y a 11:r
r . , .✓ c... l r, �..
r 1
.� �.'.... II 3 �N I ' �600Know what's b@SOW. G�
580
_�i �1
Call before you dig. '
1
600
\ r`, 8 CD
580 I r :. {f rr:':.. 11'CBIcn
1. Contractor is fully responsible for contacting appropriate parties and assuring that existing \ tzar2a s c1 - -
utilities are located prior to beginning construction. I- - ) I ' I r r / f;-, I -17 18
r
/12 Im 7
2. Contractor Is responsible for placing barricades, using flag men, etc. As necessary to,;--
4 k 580 10 1I11 ! �o
A..
ensure the safety of the public. _Lo
r-?
> cos 14 CB
3. All pavement cuts, asphalt or concrete, are to be placed according to standards of the north / C19-c
Carolina department of transportation and town specifications.J111- - - -
ri?I B p I ', I ALI L;rin.RlC� r
4. Shoring will be according to osha trenching standards part 1926, subpart p, or as amended.
,
5
1 i
-
InletlD
LinelD
Size
Slope
Length
Invert Up
Invert Dn
Grnd
Cover Dn
Cover Up
Material
/RimElev Up
(in)
(%)
(ft)
(ft)
(ft)
(ft)
(ft)
(ft)
A02-CB
A2-Al
24
0.60
120.01
579.22
578.50
590.13
0.13
8.91
Class III
A03-CB
A3-A2
18
0.50
231.29
583.83
582.67
587.58
5.96
2.25
Class III
A04-CB
A4-A3
15
3.88
50.01
586.02
584.08
589.70
2.25
2.43
Class III
A05-CB
A5-A4
15
3.84
127.85
591.12
586.22
594.87
2.23
2.50
Class III
A06-CB
A6-A5
15
0.60
24.36
591.47
591.32
594.87
2.30
2.15
Class Ill
B07-YI
B7-B3
15
0.50
114.00
585.93
585.36
588.87
2.25
1.69
Class III
A08-CB
A8-A3
15
0.50
24.30
584.20
584.08
587.58
2.25
2.13
Class III
A07-CB
A7-A2
18
1.36
24.95
582.01
581.67
590.20
6.96
6.69
Class III
A09-YI
A9-A7
15
0.58
113.04
582.91
582.26
586.00
6.69
1.84
Class III
B02-CB
B2-B1
24
0.50
169.52
584.46
583.61
588.87
0.09
2.40
Class III
B03-CB
B3-62
18
0.60
24.18
585.11
584.96
588.86
2.40
2.25
Class III
B04-CB
B4-B3
15
2.92
201.06
591.23
585.36
594.93
2.25
2.45
Class Ill
B05-CB
B5-B4
15
3.01
46.08
592.82
591.43
596.66
2.25
2.60
Class III
B06-CB
66-B5
15
0.60
24.13
593.16
593.02
596.66
2.40
2.25
Class III
CO2-CS
C2-Cl
30
0.50
22.00
560.61
560.50
571.59
0.38
8.48
Class III
CO3-CB
C3-C2
24
0.67
24.20
567.11
566.95
571.59
2.64
2.48
Class III
C04-CB
C4-C3
24
5.16
46.02
569.68
567.31
574.49
2.28
2.80
Class Ill
C05-CB
C5-C4
24
0.60
24.49
570.03
569.88
574.49
2.60
2.46
Class III
C06-CB
C6-05
18
1.77
76.68
571.89
570.53
576.14
2.46
2.75
Class III
C07-CB
C7-C6
15
5.09
144.05
579.47
572.14
583.97
2.75
3.25
Class III
C08-CB
C8-C7
15
6.26
187.17
591.38
579.67
596.49
3.05
3.86
Class III
C09-CB
C9-C8
15
0.60
93.30
592.14
591.58
600.06
3.66
6.67
Class III
C14-CB
C14-C9
15
0.60
20.07
596.55
596.43
600.04
2.38
2.24
Class III
CIO -CB
CIO-C9
15
0.60
72.54
592.77
592.34
600.29
6.47
6.26
Class Ill
C13-YI
C13-C10
15
0.53
26.00
595.25
595.11
598.19
3.92
1.69
Class Ill
C11-MH
C71-C10
15
0.60
95.24
593.55
592.97
599.16
6.06
4.36
Class III
C12-CB
C12-C11
15
0.60
35.72
593.96
593.75
597.45
4.16
2.24
Class III
C15-CB
C15-C8
15
0.87
24.22
592.99
592.78
596.49
2.46
2.25
Class III
C16-CB
C16-C7
15
3.29
24.30
580.47
579.67
583.81
3.05
2.09
Class III
C17-YI
C17-107
15
0.60
106.38
680.31
579.67
583.31
3.05
1.75
Class Ill
C19-CB
C19-C2
18
0.85
112.04
568.20
567.25
577.24
2.84
7.54
Class III
C24-CB
C24-C19
15
0.60
24.15
573.75
573.61
577.25
2.38
2.25
Class III
C18-YI
C18-C6
15
4.50
24.00
573.22
572.14
576.72
2.75
2.25
Class III
C20-CB
C20-C19
18
0.52
245.84
569.67
568.40
575.58
7.34
4.41
Class III
C21-CB
C21-C20
15
0.60
46.59
570.20
569.92
573.99
4.41
2.53
Class III
C22-YI
C22-C21
15
0.51
109.26
570.96
570.40
573.90
2.33
1.69
Class Ill
C23-YI
C23-C20
15
1.87
104.55
571.87
569.92
575.37
4.41
2.25
Class Ill
E02-CB
E2-E1
24
0.60
64.90
579.51
579.12
584.02
-0.21
2.51
Class III
E03-CB
E3-E2
24
0.50
30.26
579.86
579.71
584.01
2.31
2.15
Class III
E04-YI
E4-E3
18
0.74
120.55
581.25
580.36
584.46
2.15
1.71
Class Ill
D01.1-CB
D1.1-D1
15
0.50
44.71
560.47
560.25
568.36
0.27
6.64
Class III
D02-YI
D2-D1.1
15
0.60
49.5$
562.80
562.50
567.00
4.61
2.95
Class III
D03-YI
D3-D2
15
7.33
140.46
573.30
1 563.00
576.67
2.75
2.12
Class III
LEGEND:
CB CURB INLET
DCB DOUBLE CURB INLET
FES FLARED END SECTION
MH MANHOLEIJUNCTION BOX
YI YARD INLET
- I (I I
BW SS
I I III -III -III I I l l I-
2
1
1
1 North American Green SC150 Straw Blanket with netting or approved equal
2 North American Green C350 reinforcement matting or approved equal
NOTE: Normal water depth based on 100yr storm event flows.
GRASS LINED
DRAT NAG E SWALE
scale: NfiS 1
Note: Seed all swales, see permanent lawn specifications
SWALE
BOTTOM WIDTH
SIDE SLOPE
N RMAL WATER
DEPTH
DEPTH MIN.
LINING
YI-E4
2.0'
3:1
0.54'
1.54'
C350
YI-D3/D2
1.0'
3:1
0.49'
1.49'
SC150
YI-C22/A09
4.0'
3:1 & 2:1
0.42'
1.42'
SC150
YI-C17
5.0'
3:1 & 2:1
0.32'
1.32'
SC150
LEGEND:
SYMBOL
EXISTING CONTOUR
\
PROPOSED CONTOURS
20'SDE EASEMENT
RIGHT OF WAY
CATCH BASIN (CB)
Tree Save Area
SkJ3/ /0ze ZL
(21161
SYMBOL
®
DOUBLE CATCH BASIN (DCB) --
DROP INLET (DI)
FLARED END SECTION (FES)
HEADWALL
POND OUTLET STRUCTURE
WITH RIP RAP APRON
0 30 60 120 180 240
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la �n 6�U0
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Now Town Road
� A
65
A 1i�
a eon6tt%R°aa o
SITE s
0
m P
Henry Hates esm on Dn
R d
�tm W,l
oa 1 "=1 mile
VICINITY MAP
FAIRGREEN AVE 1
STATION=10+00.00
OFFSET=0.00
NORTHING=448133.17
EASTING=1468817.01
(TIE)
N89'08'21"W (A O
KEYNOTES:
PROP. CUL-SE-SAC REFER TO DETAIL
A
8/C800
O SIGHT TRIANGLE: 35' x 35'
2' VALLEY CURB AND GUTTER
OPROP.
PER NCDOT REFER TO DETAIL 2/C800
ACCESSIBLE PER RAMP
OPROP.
NCDOT REFER TO DETAILS C800
LEGEND:
NOTE:
NO PARKING/FIRE LANE SIGNAGE
PROP. STOP SIGN (MUTCD R1-1)
SHOULD BE PLACED EVERY 500' ON
INBOUND LANE OF ALL STREETS
20'SDE
PROP. STORM EASEMENT W/
INCLUDING CUL-DE-SAC.
WIDTH
PROP STREET SIGN
-- - PROP. TREE PRESERVATION BUFFER
PROP. 5' UTILITY EASEMENT
CENTERLINE DATA
Line #
Length
Direction
L100
178.52
S860 44' 10.71"E
L101
859.50
SB90 50' 18.97"f_
L102
168.30
NOD 09' 41.03"E
L103
285.78
N50 02' 19.06"W
L104
651.62
N50 07' 02.19"E:
L105
246.22
S840 57' 40.94"W
L106
319.58
S860 43' 56.09"E
L107
154.15
S840 52' 57.81" E
L108
378.78
S800 11' 16.05"E
L109
66.24
S840 35' 44.29"I_
L110
42.50
S71 ° 29' 56.50"E
8+ 2
- - - Twinber Ln.
- - Barrington _
i
Subdivision
i
� I
START NEW ROAD
ALIGNMENT=FAIRGREEN AVE 1
STATION=9+89.67
OFFSET=0.00
NORTHING=448133.76
CENTERLINE CURVE DATA
Curve #
Radius
Length
Delta
Chord Length
C100
1000.00
54.15
3.1023
54.14
C101
1300.00
117.98
5.2000
117.94
C102
1300.00
230.43
10.1559
230.13
C103
1500.00
48.42
1.8495
48.42
C104
BOo.00
61.55
4.4078
61.53
C105
400.00
91.43
13.0966
91.23
FAIRGREEN AVE 2�
STATION=8+21.91
OFFSET=0.00
NORTHING=449046.78
EASTING=1468690.79
FAIRGREEN AVE 2
STATION=10+00 00
BOUNDARY LINE TABLE
LINE
LENGTH
BEARING
L1
2.08
N88"50'55'W
L2
9.92
N04°13'33'W
L3
50.03
NO3"16'54"E
L4
65.55
NO3"19'13"E
L5
64.92
NO3"15'19"E
L6
65.51
NO3"17'12"E
L7
65.00
NO3"12'37"E
LB
65.47
NO3°16'11"E
L9
64.96
NO3'13'32"E
L10
65.56
NO3'18'31"E
L11
64.98
NO3'l6'06"E
L12
65.48
NO3°13'50"E
L13
65.53
NO3"16'51"E
L14
68.30
NO3"18'08"E
L15
50.03
NO3°157297E
L16
69.91
NO3"14'37"E
L17
65.57
NO3"17'58"E
L18
65.46
N03015'41"E
L19
96.34
NO3°16'16"E
L20
37.76
NO3'10'56"E
START NEW ROAD
ALIGNMENT=FAIRGREEN AVE 2
STATION=9+37.31
OFFSET=0.00
NORTHING=449040.21
EASTING=1468806.00
ADJACENT PROPERTY
OWNERS
ADJACENT PROPERTY OWNERS
LOT#
OWNER(N/F)
PIN
DB/PG
PC/PG
LOT#
OWNER(N/F)
PIN
DB/PG
PC/PG
17
ALEXA C. THOMAS
06159274
4111/747
11856
109
SHEA REAL ESTATE INVESTMENTS
ijr
06186315
5648/757
L/480
18
KATHERIN BROOKE COVINGTON
06159275
5228/231
1/856
11
SHEA REAL ESTATE INVESTMENTS
06186316
5648/757
L/480
23
ROBERT G. SMEDBERG CHRISTINA
06159282
4383/541
1/983
111
ROBERT A. &JUNELLE L. WHITE
06186263
5548/673
1/270
O
PARK PROVIDENCE HOMEOWNERS
06159296
4047/683
I/983
112
MAITREYEE F.& FANIL M. SHAH
06186264
5588/672
J/270
24
DONNA L. WILLIS-CM-TON
06159283
4141/785
1/983
113
G. BYRON MORGAN, SI JESSICA S.
06186265
5518/146
J/270
25
FRANCISCO ALBINO GALICIA ROJAS
06159284
5314/37
/983
1 1
JOHN GORDON ANGELA
MARTINEZ CORDON
06186266
5647/793
J/270
46
ANITA SANCINELLA JOSEPH
06159285
4207/22
1/983
11
DOUGLAS C. & LIANNE M. HOFER
06186267
5527/282
J/270
27
BHUVANESUWARI SWAMINATHAN &
0615928fi
5337/706
I/983
116
TSE HO CHEN & SHU LING WANG
06186268
5689/398
J/270
SWAMINATHAN VENKATAKRISHNAPRASHAD
28
FERDINANDO MARINO ROSA
BATISTA
06159287
5384/274
/983
11
SHEA REAL ESTATE INVESTMENTS
LLC
06186269
5648/757
J/270
29
DAVID L. & VIRGINIA F. BROWN
06159288
4215/142
1/983
(110
ANNETTE NICOLE CURRAN
06186270
5651/626
J/270
30
WAYNE L. & MARLO L. GARRIS
06159299
4232/489
1/983
119
KRISHNA RAVI & HIMABINDU
06186270
5561/533
L/367
MA V
31
JOHN T. & LISA D. AUSTIN
06159290
4229/249
1/983
12
LINDA M. NAPOLITANO
06186271A
5564/85
L/367
32
GERARD & DEIDRE WHELAN
06159291
4663/760
1/983
121
WILLIAM DAVIS& AIMEE LAMKIN
NS
06196272
05789/599
1/270
33
JACK & ELIZABETH SLUITER
06159292
5197/407
1/983
12
WILLIAM DARRELL DIANE GANAY
SIZEMORE
06186273
5160/755
J/270
C
M[CORKLE FARM LLC
06159003D
4903/787
D/974
123
RIGOBERTO & SHIRLEY MANALIGOD
06186274
4590/580
J/270
D
THE DAVID L. FRANCIS FAMLIMITED PARTN ILY
06162013A
6023/716
RM-1
12
JONATHAN M. & KIM L. ANSLOW
06186275
5079/82
J/270
E
101ERT60RDONPFAU. FIUME AND PATNOAA PFAU,TRUNEE
06189054
5802/896
L/718
125
DANIEL T. MORGAN, JR ASHLEIGH
06186276
5339/793
J/270
OF ME PFAU DEMMTON OFTRR DATEDMIIVL97R
80
SHEA REAL ESTATE INVESTMENTS
06186304
5648/757
L/480
12
CHRISTOPHER R. ICARSON H.
06186279
4660/845
1/270
LLC
BAUCOM
10
SCOTT A.& LYNDA D. WAHLERS
06186313
5691/418
L/480
12
JON&ANDREA RIDGWAY
06186279
4392/820
J270
10
HUGH & ANGELA HUMAN
06186314
1 5867/356
L/480
A
SHEA INVESTMENT FUND I LLC
106186020 90
1 6130/840
1 L/228
B
WELLS FARGO BANK NATIONAL
06186011A
1 5415/905
1 L/228
CIAIJON
Note: Lot numbers reference the surveyed and GIS data for lots within each subdivision as per the legal description and online information.
Letters have been developed by Merrick & Company as reference to parcels not identified by a specific lot number. They are identifiers and not a legally identified letter.
6.92 I I I OFFSET=0.00
NO3'26'23"E 155.77' I I 10 10 10 11 - I 1 ' NORTHING=449036.63
COS I i NO3 5'41"E 133sa' La j t1, 1t FASTING=1468868.59 TRANSITION, SIDEWALK FROM I I
0.11 ac. I s Ls 113 1t n5 j i 4' TO 5' WIDTH OVER 62' of �
TRANSITION SIDEWALK FROM L7 7 1� t 16 - I I r
L8 i i I 11 I 118 t o I
lol I II 4'T05'WIDTH OVER 73' L9 L70 �I
o LL-_ L71 L12 120 �I
_ _154 10' Side Yard I I _ 30' Perimeter Tree Preservation Buffer L73 121 i I
-E N I L14 I 5 t2 �:
} I j I _- i L16 L17 L18 123 1
12
� 5 I c � i 4 i 155'__, I 22' I 1 � L19 N0375"42"E 112.98 12 ,
0 11,980SF LL 151, 151' E6' -
Lzo 1za
IR v ICUL-DE-SAC
' -- r 26 I 157' - - O
_ NO3'32'S6" 298.33' 12
�a -
154' 20' SDE STA: 12+46 ENTER OF CUL-OE SAC O 1 B/C ^ - --
11i00 1 I 6 I I ' STA:12+12.72 1 I I 50' 1 1 m'-
- { I 12,400 SF I ^ 15 �`o OFF:O.00' 12,030 SF n ROW it '1 22 I" S� ' 153'- - -
1 I 12,126 SF �' _ 110'_ L _ Q v 1 j I g 12,212 SF < / I p �N STA: 10+00 -
4 B o1 _S' p0 5� ' - 157�- 0 1' j 31 o s _ 126' c
ENTER OF CUL-DE-SAC
°� 1 155' 133' \ ' 10' SiSide Yard - J STA:10+33.50
12,294 SF - r \ tU I I (11ool i r _
I ro IT - \ ` - L 15T 12,649 SF
20' SDE �o h� F
�' I ! O \ 1 16 .Lo v 11 \ oFF:o.00'
` 32
154' Lu
W I 7 I o I / I EGPr 1 13,317 SF 1 20 i I I� I 136' - R33.5 to t 12,107 SF
- -- - �� 1 W 12,400 �SF n 14 t2 00 / 12,479 SF 1 23 p - EDP
n 121001 � I °� \ I i / / j 1 J II I co rn
1 L J COS -- -_ I I f 12,591 SF N i A
a 12,195SF � � � �R2o'ero-- � rM Iv � COS�,
3 ai _ CD EOP 1 n - / G. 95, 56 37 40' I ' ti 1 - , 36 ac. \ I 0`b -36,
1.80 ac. 7 86' I M
12,305 SF > m ' 26' - - 155' - uo ag' to 1 i i n - 30 0, \
Q o I Bic I o �,' 1 _ ss' sr 12,020 SF 1
0 I i w 77' 82' p -I t a, -�
- - - 50, o h o I-o - {- - - - - - °1 12too,' w 24' 85' v 11 00 / 33
ROW o m - _ N I I n 11� 85' 57' -- ' o
1 d tl�n I 1 30' Rear Ka 28, 99' rq I d 12,447 SF v
ti 8 I I I -- 30' Rear Yard -- I i �;. I { I I I r-- M
- L owl I 12,400 SF d m - _ 20' SDE ` _ Z I I I 11 , COS I h-
'� Lri 1 I o o. - I- 0 -rD , v 18 I 0.15 ac I I I -- •L �J -! i E '-- _
s� _ r ` __ _ 0 0 � d, od 17 v I 19 - GP Iw J
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- - 71'- -10' S PUE
_ 40'- -
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0 49 12,128 SF v N o
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ai
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30' Rear Yard 38 W ` 155�- }-
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2s ! �I13,464 SF I� I 12,742 SF _ _ t I 13,070 SF Wa1 1a�oo
I B/C i E _ 76' 15' 62'
50 -- I 79' m I oCD
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ROW , �N� 80' 232.25" I 70, I I U J
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END OF ROAD BARRICADE 1s 0 82' 13.71' 0 81' oFFa6.00'R - i I 154'
5057 T58"W 780.92 ` 8$' N
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SEE DETAILS 82 as1.o1' o
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STA: 15+86.14
Know what's below.
Call before you dig.
1. Contractor is fully responsible for contacting appropriate parties and assuring that existing
utilities are located prior to beginning construction.
2. Contractor is responsible for placing barricades, using flag men, etc. As necessary to
ensure the safety of the public.
3. All pavement cuts, asphalt or concrete, are to be placed according to standards of the north
carolina department of transportation and town specifications.
4. Shoring will be according to osha trenching standards part 1926, subpart p, or as amended.
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VICINITY MAP
Development Data:
Parcel ID:
Site Area:
Existing Zoning:
Jurisdiction:
Number of Lots Proposed
Watershed:
Lot Requirements:
0618602080
23.57 ac.
CD R4 Conditional District
Single -Family Residential
Town of Waxhaw
54
Gaiawba
Minimum Lot Area:
12,000 SF
Acreage of Smallest Lot
in Subdivision:
0.275 Ac.
Minimum Width:
60'
Minimum Depth:
60,
Maximum Lot Coverage:
75%
Maximum Bldg Height:
45'
Front Setback:
20'
Rear Yard:
30'
Side Yard (Interior):
10,
Side Yard (Corner):
20'
Maximum Accessory Height: 25'
Cumulative DBH per Lot: 8" (Not Including Street Trees)
Minimum Trees per Lot: 3 (Not Including Street Trees)
Open Space Provided: 4.76 ac. (20.2%)
Treesave Calculation:
Total Site Area: 23.57 ac.
Less Perimeter Treesave area
Less Proposed ROW:
Less Existing Pond
Net Site Area:
Interior Treesave Required:
Interior Treesave Provided:
Project Phasing:
Estimated Completion Date of
3.16 ac.
3.56 ac.
0.10 ac.
16.75 ac.
3.35 ac. (20%)
3.43 ac (20.5%)
Subdivision Infrastructure Spring 2015
Estimated Completion Date of
Home Construction Fall 2017
Development Contact:
Developer: Shea Homes
Chase Kerley
8008 Corporate Center Drive
Suite 300
Charlotte, NC 28226
[phone]
chase. [e-mail]
Engineer: Merrick & Company
Marcus King, PE
1001 Morehead Square Dr
Suite 530
Charlotte, NC 28203
[phone]
marcus. [e-mail]
Know what's below.
Call before you dig.
1. Contractor is fully responsible for contacting appropriate parties and assuring that existing
utilities are. located prior to beginning construction.
2. Contractor is responsible for placing barricades, using flag men, etc. As necessary to
ensure the safety of the public.
3. All pavement cuts, asphalt or concrete, are to be placed according to standards of the north
Carolina department of transportation and town specifications.
4. Shoring will be according to OSHA trenching standards part 1926, subpart p, or as
amended.
:'"oHAO^J` MiL[_E2
arrington 2 704_Zo1--lg93
-BUIL-6bP,
WAXHAW, UNION COUNTYNORTH CAROLINA
FW =AtW J fII£l+9fr
=a aie roiu
Land Use.
Residential
Zoning: RM-1
Land Use:
Residential
Zoning:
CU-R3-PRD
PREPARED FOR:
SHEA HOMES
r ., r
'Y
Barrington
-and Use: Residential
Zoning: CU-R3-PRD
Twinberry Ln.
STREETLENGTHS
Fairgreen Avenue (south)
1092 LF
Fairgreen Avenue (central)
522 LF
Cutters Spring Drive
641 LF
Autumn Ridge Drive
1454 LF
Harvest Moon Court
246 LF
_
3955 LF
Land Use:
Residential
Zoning:
CU-R3-PRD
Land Use:
Residential
Zoning: R-40
Interior Tree Save Area
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Date
Number of
SEAL
SHEET INDEX
Last Revised
Revisions
° 1!32730 e
4
C001-0002
Cover sheet / general notes 01.29.14
O ^ 4'oiN���?
Survey
, �;, • .., •• q°'
C200
C300
Site Plan 01.29.14
Demo / Erosion Control Notes 01.29.14
C301
Demo / Initial Erosion Control Plan 01.29.14
C302
Final Erosion Control Plan 01.29,14
C401-C402
Grading and Storm Drainage Plan 01.29.14
C451
Composite Drainage Area Map 01.29.14
C452-C453
Pre and Post Drainage Area Maps 01.29.14
C501-0504
Water Quality Plans & Details 01.29.14
C601-C602
Roadway Plan & Profiles 01.29.14
C801-C804
Site Details 01.29.14
C900
Planting Plan Ot29.14
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Top Elev: 565. Bottom Elev: 559
Three 4" holes to drain forebay into main
pond at elev. 560 with class B stone, 5' radii
from center of hole (both sides of wall)
­540.
No part of WQ device
(including easement)
-
shall be placed within
any other easement
� � I
i -Split rail fence -
I
Segmental Wall
Top Elev: max: 574
min: 568
ttom Elev: max: 566
min: 560
Underti�
*4x6" Underdrains--�,
`0.50% min. slope -
Main on _
30'x40' Sand Filter
.far to WQ Detailsl
-A 4 y --
• a
'I° - "•
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• 1
1
`WQ Pond EasemlQnt
rr
i
WATER QUALITY
BASIN -1
Know what's below.
Call before you dig.
i'\
NORTH CAROLINA WATERSHEDS
-/
-
_ _
WATER QUALITY BASIN CONSTRUCTION SPECIFICATIONS, WQ POND:
A.
EARTHWORK
wW� ,�, so"s°"•
i
1.
THE FOUNDATION AREA SHALL BE CLEARED OF TREES, LOGS, STUMPS, ROOTS, BOULDERS, SOD AND UNSUITABLE SOIL.-►J""'"
°tl°1'""
IF NEEDED TO ESTABLISH VEGETATION, THE TOPSOIL SHALL BE STOCKPILED AND SPREAD ON THE COMPLETED DAM AND
_
SPILLWAYS. THE FOUNDATION AREA SHALL BE THOROUGHLY SCARIFIED BEFORE PLACEMENT OF THE FILL MATERIAL
ockable gate (double swing) to allow°.
'+�
dr'co
! access to pond. Keys shall be provided to
2.
EXISTING STREAM CHANNELS IN THE FOUNDATION AREA SHALL BE SLOPED NO STEEPER THAN A RATIO OF TWO
•° '. R�
/
the publicworicsdepartmentandtothe
HORIZONTAL TO ONE VERTICAL. THEY SHALL BE DEPEENED AND WIDENED AS NECESSARY TO REMOVE ALL STONES,fl
Tuv�OWNSMEN
aeo.o ¢fie
r4 e
OA.Gateshallmatchtheappearenceof
e a
GRAVEL, SAND, STUMPS, ROOTS, AND OTHER OBJECTIONABLE MATERIAL AND TO ACCOMMODATE COMPACTION EQUIPMENT.
fence. Style and material shall
FOUNDATION AREAS SHALL BE KEPT FREE OF STANDING WATER WHEN FILL IS PLACED ON THEM. THE BORROW AREAS
SRE
%
approved by owner
SHALL BE CLEARED OF STUMPS, ROOTS AND UNSUITABLE SOIL. THE WATER QUALITY BASIN SHALL BE CLEARED AND ALL
4•+U•m ..,.," A -
"' OAK
'/
STUMPS REMOVED BEFORE FILLING OPERATIONS BEGIN.
/
I
/
Lomas
3.
THE SOILS ENGINEER WILL TAKE REPRESENTATIVE SAMPLES OF EACH PROPOSED FILL MATERIAL AND TEST THEM TO
10wGrass access road.
DETERMINE THE COMPACTION AND CLASSIFICATION CHARACTERISTICS (PROCTOR TEST). ONLY THOSE MATERIALS AS
lope not to exceed12%
APPROVED BY THE SOILS ENGINEER WILL BE USED AS FILL ON THE DAM. GENERALLY SM OR SC CLASSIFICATION SOILS
WILL BE ACCEPTABLE. COMPACTED EARTH FILLS SHALL BE CONSTRUCTED TO THE ELEVATIONS, LINES, GRADES AND
• � =-
I F FOUNDATIONS AND REMOVAL OF WEAK OR UNSUITABLE
INDICATED ON T E PLANS. AFTER STRIPPING 0 FOU
CROSS SECTIONS H
OPERATION
MAINTENANCE PLAN W POND:
AND MAINTE C Q
-
MATERIALS HAS BEEN COMPLETED, AND BEFORE START OF MATERIAL PLACEMENT, COMPACTED EARTH SHALL BE USED
A
'' --i-
TO FILL ALL STUMP HOLES, MINOR EXCAVATIONS AND DEPRESSIONS FOR CAVITIES INSIDE THE EARTH FILL LIMITS. FILL
A.
INSPECT MONTHLY OR AFTER EVERY RUNOFF -PRODUCING RAINFALL EVENT WHICHEVER COMES
plitretlfence
SHALL BE PLACED IN HORIZONTAL LAYERS OF NOT MORE THAN (9") LOOSE DEPTH.
FIRST REMOVE DEBRIS FROM THE TRASH RACK.
-
'DI Forebay drain jj
1.
CHECK AND CLEAR THE ORIFICE OF ANY OBSTRUCTIONS. IF A PUMP IS USED AS A DRAW DOWN
.wff shreck&6"valve (at
4.
AFTER STRIPPING OF FOUNDATIONS AND REMOVAL OF WEAK OR UNSUITABLE MATERIALS HAS BEEN COMPLETED, AND
MECHANISM, CHECK FOR PUMP OPERATION.
-:edge
BEFORE START OF MATERIAL PLACEMENT, COMPACTED EARTH SHALL BE USED TO PILL ALL STUMP HOLES, MINOR
2.
CHECK THE POND SIDE SLOPES, REMOVE TRASH, REPAIR ERODED AREAS BEFORE THE NEXT
C:: Inv= 0 min sbpe=0,5%.
EXCAVATIONS AND DEPRESSIONS FOR CAVITIES INSIDE THE EARTH FILL LIMITS.
RAINFALL EVENT.
Tiei outlet structure
3.
IF THE POND IS OPERATED WITH A VEGETATED FILTER, CHECK THE FILTER FOR SEDIMENT
5.
AS SOON AS FEASIBLE AFTER STARTING CONSTRUCTION OF A FILL. THE CENTRAL PORTION THEROF SHALL BE BUILT AND
ACCUMULATION, EROSION AND PROPER ORIENTATION OF THE FLOW SPREADER MECHANISM.
-40PVC /
MAINTAINED SLIGHTLY HIGHER THAN THE SIDES TO ALLOW FREE DRAINAGE TO THE SIDE SLOPES. EACH LAYER OF FILL
REPAIR AS NECESSARY.
from
SHALL BE COMPACTED BY ROLLING WITH COMPACTION EQUIPMENT WHICH IS BEST SUITED FOR THE TYPES OF SOIL
I` Sand
ilter0.5k o
ENCOUNTERED. FILL ADJACENT TO PIPE CONDUIT AND ANTISEEP COLLARS SHALL BE COMPACTED BY HAND. EACH LAYER
B.
QUARTERLY
['mmsl
OF FILL SHALL BE COMPACTED TO NOT LESS THAN 95% MAXIMUM DRY DENSITY STANDARD PROCTOR AT OPTIMUM
( )
1.
INSPECT THE COLLECTION SYSTEM (IE: CATCH BASINS, PIPING, GRASSED SWALES) FOR PROPER
j
MOISTURE CONTENT. WETTING OR DRYING OF THE MATERIAL AND MANIPULATION TO SECURE UNIFORM MOISTURE CONTENT
FUNCTIONING. CLEAR ACCUMULATED TRASH FROM BASIN GRATES, BASIN BOTTOMS, AND CHECK
at Structure
THROUGHOUT EACH LAYER SHALL BE REQUIRED. DENSITY TESTS WILL BE PERFORMED AT A FREQUENCY AS SPECIFIED BY
PIPING FOR OBSTRUCTIONS.
detail below ) I �
1
L
THE SOILS ENGINEER. AS A MINIMUM, TESTS WILL BE PERFORMED ON EVERY THIRD FT OR EVERY 1000 CUBIC YARDS . I
2.
CHECK POND INLET PIPES FOR UNDERCUTTING, REPLACE RIPRAP, AND REPAIR BROKEN PIPES.
�'
�r
WHICHEVER COMES FIRST. ALSO DENSITY TEST WILL BE PERFORMED WHENEVER FILL MATERIAL CHARACTERISTICS CHANGE.
3.
RESEED GRASSED SWALES, INCLUDING THE VEGETATED FILTER IF APPLICABLE. TWICE A YEAR AS
10'wGrassa tooutfall
NECESSARY. REPAIR ERODED AREAS IMMEDIATELY.
r
3; ::::, i
B.
OUTLET DEVICE
18" CP Outfall Pipe
1.
OUTLET DEVICE COMPONENTS ARE TO FABRICATED AS SHOWN ON THE PLANS.
C.
EVERY SIX MONTHS
2
CONTRACTOR TO SUBMIT DESIGNED SHOP DRAWINGS TO THE CIVIL ENGINEER FOR APPROVAL PRIOR TO CONSTRUCTION
1
REMOVE ACCUMULATED SEDIMENT FROM THE BOTTOM OF THE OUTLET STRUCTURE
mergenc'y Spillway (Refer
to WQ Details)
10' wide berm (min) i
WQ Pond se
ment
i
Main Pool Stage Storage
Forebay Stage Store a
Total Pond Stage Store e
Elevation
lmsi)
Area
(d)
Volume
(cf)
Elevation
(mat)
Area
(at)
Volume
(c0
Elevation
(mal)
Area
(afl
Volume
(cf)
559.00
3682
0
560.00
0
0
559
3682
0
560.00
3930
3806
560.00
1914
0
560
5844
4763
561.00
4447
7995
561.00
2037
1976
561
6484
10927
562.00
4999
12718
562.00
2160
4074
562
7159
17749
563.00
5673
18004
563.00
2283
6296
563
7856
25256
564.00
6181
23881
564.0)
24IN
8640
564
8587
33478
565.00
6806
30374
565.00
2529
11108
565
9335
42439
566.00
10118
38836
566
10118
52165
1. Contractor is fully responsible for contacting appropriate parties and
assuring that existing utilities are located prior to beginning construction.
2. Contractor is responsible for placing barricades, using flag men, etc. As
necessary to ensure the safety of the public.
3. All pavement cuts, asphalt or concrete, are to be placed according to
standards of the North Carolina Department of Transportation and local
government specifications.
4. Shoring will be according to OSHA Trenching Standards Part 1926,
Subpart P, or as amended.
TO THE OUTLET DEVICE. SHOP DRAWINGS SHOULD INCLUDE PRECAST BOX
DESIGN, TRACH RACK, GRATED COVER,
2. CHECK THE POND DEPTH AT VARIOUS POINTS IN THE POND. IF DEPTH IS REDUCED TO 75% OF
ALUMINUM STEPS, AND ALL
DRAIN/ORIFICE PIPING REQUIRED.
ORIGINAL DESIGN DEPTH, SEDIMENT WILL BE REMOVED TO AT LEAST ORIGINAL DESIGN DEPTH.
C. CONCRETE
D. GENERAL
1.
ALL CONCRETE SHALL CONFORM
TO THE STANDARD- SPECIFICATIONS FOR
READY MIXED CONCRETE, ASTM C 94. AN
3. MOW THE SIDE SLOPES, NOT INCLUDING NORMALLY SUBMERGED VEGETATED SHELF, ACCORDING
AIR -ENTRAINING ADMIXTURE
SHALL BE ADDED. THE CONCRETE SHALL BE
PROPORTIONED TO MEET THE FOLLOWING
TO THE SEASON. MAXIMUM GRASS HEIGHT WILL BE 6".
REQUIREMENTS:
4. REMOVE WOODY VEGATATION ALONG THE DAM EMBANKMENT.
COMPRESSIVE STRENGTH:
MINIMUM 3600 PSI
5. THE ORIFICE IS DESIGNED TO DRAW DOWN THE POND IN 2-5 DAYS. IF DRAW DOWN IS NOT
WATER -CEMENT RATIO:
0.40 - 0.50
ACCOMPLISHED IN THAT TIME, THE SYSTEM MAY BE CLOGGED. THE SOURCE OF CLOGGING MUST
SLUMP:
MINIMUM 3', MAXIMUM 5"
BE FOUND AND ELIMINATED.
AIR CONTENT:
MINIMUM 5%, MAXIMUM 8%
6. ALL COMPONENTS OF THE DETENTION POND SYSTEM MUST BE KEPT IN GOOD WORKING ORDER.
COARSE AGGREGATE:
1" - 1 1/2"
7. OWNER SHALL MAINTAIN RECORDS OF ALL INSPECTION REPORTS.
D.
GRASSING
GENERAL NOTES:
1.
GRASS ALL AREAS DISTURBED BY CONSTRUCTION PER SPECIFICATION OF
EROSION CONTROL DETAIL SHEET.
A IN THE NCDENR STORMWATER BEST MANAGEMENT
POND MAINTENANCE TO BE AS INDICATED M
E.
PLANTING
PRACTICES DESIGN GUIDELINES. REFER TO WATER QUALITY LEGEND FOR PLANTING REQUIREMENTS.
1.
WETLAND PLANTINGS SHALL
BE ADDED AS REQUIRED BY STORMWATER BEST
MANAGEMENT PRACTICES. PLANTING SHALL
POND MAINTENANCE INFORMATION MUST BE PERMANENTLY POSTED ON -SITE. PERMANENT EASEMENT
BE BASED ON AVAILABILITY
OF PLANTS LISTED IN TABLE 2.2 OF NCDENR
BEST MANAGEMENT PRACTICES DESIGN
IS NOT SET TO A UNIFROM OFFSET FROM THE WATER QUALITY POND, BUT ADJUSTED TO PROVIDE
GUIDELINES.
OPTIMAL ACCESS FOR ACCESSIBILITY AND MAINTAINENCE
t
WATER QUALITY BASIN INFORMATION
50 YEAR STORK
10 YEAR STORM
BASIN NUMBER
1
BASIN TYPE
SF/EDD
TOTAL DRAINAGE AREA (AC)
7.44
OFFSITE DRAINAGE (AC)
BYPASSED
DESIGN IMPERVIOUS PERCENTAGE (%)
42.20
MIN. AREA OF SAND FILTER BED* (SF)
3609
MIN. NUMBER OF UNDERDRAINS
3
HIGH
WATER
ELEV:
565.39
HIGH
WATER
ELEV:
565.00
HIGH
WATER
ELEV:
563.29
ORIFICE ELEVATION: 561.12
12" TURNDOWN
2" ORIFICE
TURNING ROD GUIDERAIL
SUPPORTS AS NECESSARY
6" DIAM. GATE VALVE TO DRAIN
POND, TURNING ROD TO BE
EXTENDED TO TOP OF STRUCTURE
WITH HANDWHEEL FOR OPERATION
6" DIP POND DRAIN
WITH TRASH RACK
BOTTOM OF POND 59.00
GRATED COVER
TOP OF STRUCTURE
ELEV: 564.90
ALUMINUM STEPS-----�'
12" O.C., TYPICAL
PRECAST 4' X 4' VAULT
DIMENSIONS ARE TO INSIDE
CONTRACTOR TO SUBMIT
SEALED SHOP DRAWINGS
FOR APPROVAL PRIOR
TO CONSTRUCTION
SOLID FILL
GROUT/CONCRETE
OUTLET STORM DRAINAGE DESIGN DATA:
UPSTREAM
STRUCTURE
DOWNSTREAM
STRUCTURE
UPSTREAM
INVERT
DOWNSTREAM
INVERT
LENGTH
(FT)
SIZE
(N)
MIN SLOPE
(FT/FT)
OS
RIPRAP APRON
1 554.50
554.00
±71
1 18
0.005
ALL PIPE TO BE CLASS III RCP, UNLESS NOTED OTHERWISE.
* THE CONTRACTOR MAY ADJUST THE LAYOUT OF THE SAND FILTER BED AS LONG AS THE
MINIMUM AREA REQUIREMENT IS MET, THE UNDERDRAINS TIE INTO THE OUTLET STRUCTURE
WITH POSITIVE FLOW AND THE MINIMUM NUMBER OF UNDERDRAINS ARE PROVIDED. IT IS THE
CONTRACTOR'S RESPONSIBILITY TO ASSURE POSITIVE FLOW IS MET IN THE INSTALLATION OF
THE SAND FILTER
* THE ENGINEER OF RECORD SHALL PROVIDE THE TOWN OF WAXHAW INSPECTION RECORDS
AND REPORTS VERIFYING THE SAND FILTER BED HAS BEEN INSTALLED PROPERLY AND
ACCORDING TO THE APPROVED PLAN, MEETS THE MINIMUM AREA REQUIREMENT, AND MEETS
ALL OTHER ASPECTS OF THE DESIGN. REPORT SHALL ALSO VERIFY ALL ASPECTS OF THE
DESIGN HAVE BEEN SUCCESSFULLY INSTALLED ACCORDING TO THE APPROVED PLAN AND
SHALL BE SIGNED AND SEALED BY THE ENGINEER OF RECORD.
NOTES:
TOP OF DAM ELEV_ ---- 1 CONTRACTOR TO ENSURE THAT
>0.50 FT FREEBOARD -II _ , __ - OUTLET BOX IS SET LEVEL AND
! i _ FLUSH WITH SURFACE OF BASE
I FOOTING TO PROVIDE UNIFORM
BEARING PRIOR TO PLACING
EMERGENCY SPILLWAY ELEV: 564.95 - SECOND BATCH OF CONCRETE.
GROUT IF NECESSARY.
- ALUMINUM STEPS
12" O.C., TYPICAL �P� I -I '- I I _- I-__ __ I 2. ALL ORIFICE AND PIPE OPENINGS
S'• -� i - i (-� �- j INTO THE OUTLET STRUCTURE
-- SHALL BE SEALED LEAK TIGHT.
USE „ LINKSEAL" MECHANICAL
SEALS FOR ALL PIPES 24" AND
SMALLER.
1- -! 3. REFER TO SEPARATE DETAIL FOR
OUTLET STRUCTURE GRATE AND
INFORMATION.
54"X54" - CONCRETE ANTI -SEEP COLLAR I _ _ ! _I 4. REFER TO SEPARATE DETAIL -FOR
! II--- 54"X54" -CONCRETE ANTI -SEEP COLLA OUTLET STRUCTURE ANCHOR
DEVICES.
71 LF OF 18" RCP @ MIN. 0.50%
--- I554.50
--i I V OUT:WATER TIGHT JOINTS
N
__PERFORATED PIPE
iHi
.
SECOND CONCRETE PLACEMENT T�--I.. ,
-I
OCCUR AFTER STRUCTURE IS l-
ANCHORED IN PLACE CUT-OFF H (EXCHANGEAND
-SEE ANCHOR DTL. THIS SHEET 1 11= W/ COMPACTED SOIL)
Ihspaet durpp cmatructwn; certify ca
plans and specs; and oeRHy complien
stormwater rules. (15A NCAC 2H .10i
Permit # 5 UJ 3 I D
by - .l NC Divisb
Sheet #_C_50 I Reviebn
9-
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d
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s
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lI■■■■■s■ss■ssssslr
• rl■s■ssss■ssss■■elr
rl■■■■ssss■■■■■■sIL
ALUMINUM GRATING AND HATCH
TO BE DESIGNED AND CERTIFIED
BY MANUFACTURER.
CONTRACTOR TO SUBMIT
SHOP DRAWINGS TO ENGINEER
FOR APPROVAL PRIOR TO
FABRICATION
/ HINGE
1/8' STEEL
ANGLE PLATE
2" GRAT�'
6" STAINLESS STEEL a:
ANCHOR BOLT. EPDXY
IN PLACE \
ANGLE -CLIPS __-
TYPICAL
STEEL
EPDXY
OUTLET STRUCTURE PLAN � GRATING DETAIL 6 OUTLET STRUCTURE ANCHOR 5
NOTE: EMERGENCY OVERFLOW WEIRS
SHALL BE STABILIZED WITH
CAST -IN -PLACE CONCRETE,
4-INCH MINIMUM THICKNESS
12" CHAMFER BETWEEN
72" 72"(BERM
SLOPED AREA AND TOP OF
8 WEIR SPILLWAY 40' 8BERM (BOTH SIDES)
6"BOTH
TOP OF BERM SIDES-�I ELEV
0% SLOPE ACROSS BOTTOMG C IR ELEV
a E1=
4 d a n <
,d
COMPACTED EARTH 61 FT.
EMERGENCY SPILLWAY- SECTION A -A
INTERMEDIATE
POST
EQUAL'
b SPACII
EQUAL
SPACI�
10'f O.C. (POST SPACING, TYP;
4FER 11,1=07 DA11 C TIJD(U If W
NOTES I `-
1• ALL WOOD SHALL BE PRESSURE TREATED WITH
CHROMATED COPPER ARSENATE ® NET RETENTION OF
2 0.40 LBS/C.F. WOOD SHALL BE DRIED AFTER TREATMENT.
BACKFLL ALL POSTS AND RESTORE GRADE AT POST
BASE F0 ORIGINAL CONDITION. REMOVE ANY EXCESS SOIL
FROM 'OST BASE.
SPLIT RAIL FENCE WITH WIRE MESH
D POST
ROUGH CUT PRESSURE
TREATED, #1 SOUTHERN
YELLOW PINE, 3 HOLE
LINE/CORNER/END POST
ROUGH CUT PRESSURE
TREATED, #1 SOUTHERN
YELLOW PINE RAILS
2"X2" GALV. WIRE MESH
FABRIC FASTENED TO
FENCE
FINISHED GRADE
COMPACTED
SUBGRADE
COMPACTED EARTH
BACKFILL FOR LINE
POSTS
CONCRETE SPILLWAY
BEYOND SECTION
i I II
( Li I
COMPACTED EARTH-
6" CONCRETE SPILLWAY DEVICE
WITH #4 REINFORCING BAR
12" O.C. EACH WAY
d
TOP OF BERM ELEV
EMERGENCY WEIR ELEV
1I—
I1— SLOPE BOTTOM
ELEV: SLOPE BOTTOM -2'
40 EMERGENCY SPILLWAY - SECTION B-B
Approved Stormwater Permit Documents
Construction in accordance with these documents is
required by the stormwater permit. North Caroline
rules require that the stormwater system designer
Inspect during construction; certify conformity with the
plans and specs: and certify compliance with the
stormwater rules. (15A NCAC 2H .1008 (j) )
Pe t # S W �{a LA2 pate ¢ 2 2014
4 GI NC Division ol Water fllteNly
sheet # G 50 4- Revision Date 3 • ZB • 201 ¢
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v,
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--I-
-31I
I!
!
!
10'w Grass access road. -
ope not to exceed 1296
_ --58G
_ - - Emergency Spillway
(Refer to WQ Details)?
�- -- -- - 82LF 15" RCP 0tdfa11 PI
Outfail Manhol
(sealed lid)
Rim: 577.00
Inv in: 572.00
Inv out: 571.80
I I
-EXbul
20 mm_
ex DI 33-
_ / --RIM 574.00
INV OUT: 568.90
i INV IN: 569.40
i
I 56LF 15" RCP Outfall
/
J' WQ Pond
l"
Outlet Structure
(see detail Below)
/ I\
No part of WQ devi
()nclud ng easement) shall be
placed to any other easement
M1 W
NORTH
CAROLINA
- ---
WATER QUALITY BASIN CONSTRUCTION SPECIFICATIONS, WQ POND:
_
A. EARTHWORK
WAUU" yir .oew«s axo•n>r
1. THE FOUNDATION AREA SHALL BE CLEARED OF TREES, LOGS, STUMPS, ROOTS, BOULDERS, SOD AND UNSUITABLE SOIL.
-
IF NEEDED TO ESTABLISH VEGETATION, THE TOPSOIL SHALL BE STOCKPILED AND SPREAD ON THE COMPLETED DAM AND
/ r
SPILLWAYS. THE FOUNDATION AREA SHALL BE THOROUGHLY SCARIFIED BEFORE PLACEMENT OF THE FILL MATERIAL
o•ry �.� *s
I -
urne a saw
114
_ --
2. EXISTING STREAM CHANNELS IN THE FOUNDATION AREA SHALL BE SLOPED NO STEEPER THAN A RATIO OF TWO
*ewee.ce mo�a o��'e�
...
HORIZONTAL TO ONE VERTICAL. THEY SHALL BE DEPEENED AND WIDENED AS NECESSARY TO REMOVE ALL STONES,
'a
GRAVEL, SAND, STUMPS, .ROOTS, AND OTHER OBJECTIONABLE MATERIAL AND TO ACCOMMODATE COMPACTION EQUIPMENT.
�g4�
-+I
FOUNDATION AREAS SHALL BE KEPT FREE OF STANDING WATER WHEN FILL IS PLACED ON THEM. THE BORROW AREAS
save•ww SITE
1
I-' a
SHALL BE CLEARED OF STUMPS, ROOTS AND UNSUITABLE SOIL. THE WATER QUALITY BASIN SHALL BE CLEARED AND ALL
'
STUMPS REMOVED BEFORE FILLING OPERATIONS BEGIN.
ww•w
29
i
3. THE SOILS ENGINEER WILL TAKE REPRESENTATIVE SAMPLES OF EACH PROPOSED FILL MATERIAL AND TEST THEM TO
I
DETERMINE THE COMPACTION AND CLASSIFICATION CHARACTERISTICS (PROCTOR TEST). ONLY THOSE MATERIALS AS
�'
APPROVED BY THE SOILS ENGINEER WILL BE USED AS FILL ON THE DAM. GENERALLY SM OR SC CLASSIFICATION SOILS
_,,,,,30 I -
WILL BE ACCEPTABLE. COMPACTED EARTH FILLS SHALL BE CONSTRUCTED TO THE ELEVATIONS, LINES, GRADES AND
OPERATION
AND MAINTENANCE PLAN WQ POND:
CROSS SECTIONS INDICATED ON THE PLANS. AFTER STRIPPING OF FOUNDATIONS AND REMOVAL OF WEAK OR UNSUITABLE
A
INSPECT MONTHLY. OR AFTER EVERY RUNOFF -PRODUCING RAINFALL EVENT. WHICHEVER COMES
-
( :: •; I _-_5g0
F T C P CT SHALL E
MATERIALS HAS BEEN COMPLETED, AND BEFORE START OF MATERIAL PLACEMENT, COMPACTED ED EARTH H LL BE USED
FIRST REMOVE DEBRIS FROM THE TRASH RACK.
a ot�las n
te{d swing)
TO FILL ALL STUMP HOLES, MINOR EXCAVATIONS AND DEPRESSIONS FOR CAVITIES INSIDE THE EARTH FILL LIMITS. FILL
1.
CHECK AND CLEAR THE ORIFICE OF ANY OBSTRUCTIONS. IF A PUMP IS USED AS A DRAW DOWN
.�9
.; access to pond. Keys shall be provlde"�
SHALL BE PLACED IN HORIZONTAL LAYERS OF NOT MORE THAN (9") LOOSE DEPTH.
MECHANISM, CHECK FOR PUMP OPERATION.
to a entandto
-
4. AFTER STRIPPING OF FOUNDATIONS AND REMOVAL OF WEAK OR UNSUITABLE MATERIALS HAS BEEN COMPLETED, AND
2.
CHECK THE POND SIDE SLOPES, REMOVE TRASH, REPAIR ERODED AREAS BEFORE THE NEXT
the HOA. Gate all at e
I a shall match the
BEFORE START OF MATERIAL PLACEMENT, COMPACTED EARTH SHALL BE USED TO FILL ALL STUMP HOLES, MINOR
RAINFALL EVENT.
appea�lceoffease Styls3andmaterial
-
EXCAVATIONS AND DEPRESSIONS FOR CAVITIES INSIDE THE EARTH FILL LIMITS.
3.
IF THE POND IS OPERATED WITH A VEGETATED FILTER, CHECK THE FILTER FOR SEDIMENT
-- ^-,_- I shall be as approved by owner
!
ACCUMULATION, EROSION AND PROPER ORIENTATION OF THE FLOW SPREADER MECHANISM.
_j
5. AS SOON AS FEASIBLE AFTER STARTING CONSTRUCTION OF A FILL. THE CENTRAL PORTION THEROF SHALL BE BUILT AND
REPAIR AS NECESSARY.
_ -
MAINTAINED SLIGHTLY HIGHER THAN THE SIDES TO ALLOW FREE DRAINAGE TO THE SIDE SLOPES. EACH LAYER OF FILL
-
SHALL BE COMPACTED BY ROLLING WITH COMPACTION EQUIPMENT WHICH IS BEST SUITED FOR THE TYPES OF SOIL
B.
QUARTERLY
a
. _1
ENCOUNTERED. FILL ADJACENT TO PIPE CONDUIT AND ANTISEEP COLLARS SHALL BE COMPACTED BY HAND. EACH LAYER
1.
INSPECT THE COLLECTION SYSTEM (IE: CATCH BASINS, PIPING, GRASSED SWALES) FOR PROPER
28
OF FILL SHALL BE COMPACTED TO NOT LESS THAN 95% MAXIMUM DRY DENSITY STANDARD PROCTOR AT OPTIMUM
()
FUNCTIONING. CLEAR ACCUMULATED TRASH FROM BASIN GRATES, BASIN BOTTOMS, AND CHECK
t I
MOISTURE CONTENT. WETTING OR DRYING OF THE MATERIAL AND MANIPULATION TO SECURE UNIFORM MOISTURE CONTENT
PIPING FOR OBSTRUCTIONS.
THROUGHOUT EACH LAYER SHALL BE REQUIRED. DENSITY TESTS WILL BE PERFORMED AT A FREQUENCY AS SPECIFIED BY
2
CHECK POND INLET PIPES FOR UNDERCUTTING, REPLACE RIPRAP, AND REPAIR BROKEN PIPES.
THE SOILS ENGINEER. AS A MINIMUM, TESTS WILL BE PERFORMED ON EVERY THIRD LIFT OR EVERY 1000 CUBIC YARDS
3.
RESEED GRASSED SWALES, INCLUDING THE VEGETATED FILTER IF APPLICABLE. TWICE A YEAR AS
j I
WHICHEVER COMES FIRST. ALSO DENSITY TEST WILL BE PERFORMED WHENEVER FILL MATERIAL CHARACTERISTICS CHANGE.
NECESSARY. REPAIR ERODED AREAS IMMEDIATELY.
L
B. OUTLET DEVICE
C.
EVERY SIX MONTHS
/
1. OUTLET DEVICE COMPONENTS ARE TO FABRICATED AS SHOWN ON THE PLANS.
1.
REMOVE ACCUMULATED SEDIMENT FROM THE BOTTOM OF THE OUTLET STRUCTURE.
2. CONTRACTOR TO SUBMIT DESIGNED SHOP DRAWINGS TO THE CIVIL ENGINEER FOR APPROVAL PRIOR TO CONSTRUCTION
2•
CHECK THE POND DEPTH AT VARIOUS POINTS IN THE POND. IF DEPTH IS REDUCED TO 75% OF
TO THE OUTLET DEVICE. SHOP DRAWINGS SHOULD INCLUDE PRECAST BOX DESIGN, TRACH RACK, GRATED COVER,
ORIGINAL DESIGN DEPTH, SEDIMENT WILL BE REMOVED TO AT LEAST ORIGINAL DESIGN DEPTH.
J. -
ALUMINUM STEPS, AND ALL DRAIN/ORIFICE PIPING REQUIRED.
_ -_ _
D.
GENERAL
C. CONCRETE
3.
MOW THE SIDE SLOPES, NOT INCLUDING NORMALLY SUBMERGED VEGETATED SHELF, ACCORDING
10'w Grass access road.
fI
ASPECIFICATIONSOR READY MIXED CONCRETE ASTM C 4. AN
1. ALL CONCRETE SHALL CONFORM TO THE STANDARD F 9
THE SEASON. MAXIMUM GRASS HEIGHT WILL BE 6".
TO E A
1 Sbpbnottoexceedl2%
AIR -ENTRAINING ADMIXTURE SHALL BE ADDED. THE CONCRETE SHALL BE PROPORTIONED TO MEET THE FOLLOWING
4.
REMOVE WOODY VEGATATION ALONG THE DAM EMBANKMENT.
i I
REQUIREMENTS:
5.
THE ORIFICE IS DESIGNED TO DRAW DOWN THE POND IN 2-5 DAYS. IF DRAW DOWN IS NOT
COMPRESSIVE STRENGTH: MINIMUM 3600 PSI
ACCOMPLISHED IN THAT TIME, THE SYSTEM MAY BE CLOGGED. THE SOURCE OF CLOGGING MUST
27
WATER -CEMENT RATIO: 0.40 - 0.50
BE FOUND AND ELIMINATED.
I
SLUMP: MINIMUM 3", MAXIMUM 5°
6.
ALL COMPONENTS OF THE DETENTION POND SYSTEM MUST BE KEPT IN GOOD WORKING ORDER.
"
AIR CONTENT: MINIMUM 5%, MAXIMUM 8%
7.
OWNER SHALL MAINTAIN RECORDS OF ALL INSPECTION REPORTS.
Split r�iffence r
---
COARSE AGGREGATE: 1" - 1 1/2"
GENERAL NOTES:
D. GRASSING
1.
POND MAINTENANCE TO BE AS INDICATED IN THE NCDENR STORMWATER BEST MANAGEMENT
--- _ _-_�-
1. GRASS ALL AREAS DISTURBED BY CONSTRUCTION PER SPECIFICATION OF EROSION CONTROL DETAIL SHEET.
PRACTICES DESIGN GUIDELINES. REFER TO WATER QUALITY LEGEND FOR PLANTING REQUIREMENTS.
-- -- _
POND MAINTENANCE INFORMATION MUST BE PERMANENTLY POSTED ON -SITE. PERMANENT
E. PLANTING
NOT SET TO A UNIFROM OFFSET FROM THE WATER QUALITY POND BUT EASEMENT IS N E Q ADJUSTED
I Y STORMWATER EST MANAGEMENT PRACTICES. PLANTING SHALL
1. WETLAND PLANTINGS SHALL BE ADDED AS REQUIRED B STORMW E B
TO PROVIDE OPTIMAL ACCESS FOR ACCESSIBILITY AND MAINTENANCE.
BE BASED ON AVAILABILITY OF PLANTS LISTED IN TABLE 2.2 OF NCDENR BEST MANAGEMENT PRACTICES DESIGN
2.
FOR THIS WETLAND UTILIZING AN EXISTING CLAY LINED UNDESIGNATED POND ON -SITE, AT LEAST
GUIDELINES.
FOUR (4) INCHES OF QUALITY TOP SOIL SHALL BE ADDED TO THE TOP OF THE LINER TO SUPPORT
I -
WATER
QUALITY
BASIN
INFORMATION
PLANT GROWTH. IMPORTED OR IN -SITU SOILS MAY BE AMENDED WITH ORGANIC MATERIAL,
DEPENDING ON SOIL ANALYSIS RESULTS, TO ENHANCE SUITABILITY OF PLANT MEDIA
WQPondEasemgnt _____- _-_ ----
26 I i
, wide (min) I
WATER QUALITY BASIN - 2 0 15 30 60 90 120
WATER QUALITY LEGENDRANTING:
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
RIP RAP APRON DEEP POOL
18"-36"
SHALLOW WATER ZONE FOREBAY
3"-6" LOW MARSH AREA (*) 18"-36"
Y W W
y W W SHALLOW LAND ZONE O O MICROPOOL
W W W <12" HIGH MARSH AREA (*) 18"-36"
(*) REFER TO PLANTING LEGEND FOR REQUIRED PLANTING IN VARIOUS ZONE DEPTHS
OUTLET STORM DRAINAGE DESIGN DATA: •
UPSTREAM
STRUCTURE
DOWNSTREAM
STRUCTURE
UPSTREAM
INVERT
DOWNSTREAM
INVERT
LENGTH
(FT)
SIZE
(IN)
MIN SLOPE
(FT/FT)
OS
RIPRAP APRON
572.50
572.00
±82
15
0.005
ALL PIPE TO BE CLASS III RCP, UNLESS NOTED OTHERWISE. Know What's below.
* THE CONTRACTOR MAY ADJUST THE LAYOUT OF THE STORMWATER WETLAND AS LONG AS . C111 before OU dl
THE MINIMUM AREA REQUIREMENT IS MET. IT IS THE CONTRACTOR'S RESPONSIBILITY TO y g
ASSURE POSITIVE FLOW IS MET IN THE INSTALLATION OF THE STORMWATER WETLAND 1. Contractor is fully responsible for contacting appropriate parties and assuring that existing
* THE ENGINEER OF RECORD SHALL PROVIDE THE TOWN OF WAXHAW INSPECTION RECORDS utilities are located prior to beginning construction.
AND REPORTS VERIFYING THE SAND FILTER BED HAS BEEN INSTALLED PROPERLY AND 2. Contractor is responsible for placing barricades, using flag men, etc. As necessary to ensure
ACCORDING TO THE APPROVED PLAN, MEETS THE MINIMUM AREA REQUIREMENT, AND MEETS the safety of the public.
ALL OTHER ASPECTS OF THE DESIGN. REPORT SHALL ALSO VERIFY ALL ASPECTS OF THE
DESIGN HAVE BEEN SUCCESSFULLY INSTALLED ACCORDING TO THE APPROVED PLAN AND 3. All pavement cuts, asphalt or concrete, are to be placed according to standards of the North
SHALL BE SIGNED AND SEALED BY THE ENGINEER OF RECORD. Carolina Department of Transportation and local government specifications.
4. Shoring will be according to OSHA Trenching Standards Part 1926, Subpart P, or as amended.
NOTES:
TOP OF DAM ELEV 578.50
_ - 1. CONTRACTOR TO ENSURE
-0.50 FT FREEBOARD -' ! ! - THAT OUTLET BOX IS SET
50 YEAR STORM EVENT HIGH WATER ELEV: 577.98 _ i LEVEL AND FLUSH WITH
GRATED COVER SURFACE OF BASE
10 YEAR STORM EVENT HIGH WATER ELEV: 577.64
2 YEAR STORM EVENT HIGH WATER ELEV: 576.70 ( ! I. FOOTING TO PROVIDE
EMERGENCY SPILLWAY ELEV: 577.60 UNIFORM BEARING PRIOR
ALUMINUM STEPS _ _
TO PLACING SECOND
it -I � BATCH OF CONCRETE.
TOP OF STRUCTURE 12" O.C., TYPICAL �P�_. I ; - ' -- I _ I GROUT IF NECESSARY.
ELEV: 577.55--
2. ALL ORIFICE AND PIPE
-! OPENINGS
SHALLOW WATER ELEVATION II ('II OUTLET STRUCTURE SHALL
I- �-1 � i i --I I - -: � ! I
ORIFICE ELEVATION: 575.50 - I _I - ( ( i I'_ BE SEALED LEAK TIGHT.
WATER QUALITY BASIN A PLANT SCHEDULE: __ III I I_- USE "LINKSEAL"
12" TURNDOWN
-- - _I - I MECHANICAL SEALS FOR
- -- -_ --� I i AREA SPAC. ALUMINUM STEPS .., 3.5' ORIFICE( -
ZONE BOTANICAL NAME COMMON NAME SIZE (SF) OC % QUANT. PATTERN 12" O.C., TYPICAL ALL PIPES 24" AND
- '
III (; I ...- I ! ....., ` ! I ) I -I (-i ! SMALLER
Asclepius lncarnata
Swamp
Milkweed
min 4 cubic -inch
container
3932
18"
20%
343
TRI
W W
Hibiscus Coccineus
Scarlett Rose
min 4 cubic -inch
3932
18"
20%
343
TRI
W
Mallow
container
W W W
Lobelio Elongata
Longleaf
min 4 cubic -inch
3932
18"
20%
343
TRI
Lobelia
container
y
Clethra Alnifolia
Sweet
Pepperbrush
min 1 gallon
container
3932
36"
20%
201
TRI
W
flex Glabro
Inkberry
min 1 gallon
container
3932
36"
20%
201
TRI
a/isma subcordatum
Nater Plantain
min 4 cubic-inchcontainer626
4
11
1825%
693
TRI
(rise Virginica
Blue Flag Iris
mcubic -inch 4 c in u
6264
18"
25%
693
TRI
container
Peltandra Virginica
Arrow Arum
min 4 cubic-inchcontainer6264
18"
25%
693
TRI
Soururus Cernuus
Lizard's Tail
min 4 cubic -inch
container
6264
18"
25%
693
TRI
Nelumbo Lutea
American
min 4 cubic -inch
1570
36"
50%
74
TRI
Lotus
container
Elodea Canadensis
Canadian
Waterweed
min 4 cubic -inch
container
1570
36"
50%
74
TRI
otal Pond Stage Storag
ELEV
Area
(rnsl)
(so
575.5
15854
576
16650
577
18285
578
19977
578.5
20844
BASIN NUMBER
1
BASIN TYPE
Wetland
TOTAL DRAINAGE AREA (AC)
8.5)
OFFSITE DRAINAGE (AC)
BYPASSED
DESIGN IMPERVIOUS PERCENTAGE (%)
37.18
DEEP POOL AREA (FOREBAY)
10%
DEEP POOL AREA (MAIN POND)
5-10%
SHALLOW WATER AREA
40%
SHALLOW LAND AREA
30-40%
PRECAST 4' X 4' VAULT
DIMENSIONS ARE TO INSIDE
TURNING ROD GUIDERAIL
I 48"X48" - CONCRETE ANTI -SEEP COLLAR i
L 48' x48' CONCRETE ANTI -SEEP COLLA
j 3. REFER TO SEPARATE
CONTRACTOR TO SUBMIT
SUPPORTS AS NECESSARY
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DETAIL FOR OUTLET
SEALED SHOP DRAWINGS
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INFORMATION.
TO CONSTRUCTION
POND, TURNING ROD TO BE
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EXTENDED TO TOP OF STRUCTURE
i 4. REFER TO SEPARATE
SOLID FILL
GROUT/CONCRETE
WITH HANDWHEEL FOR OPERATION
30 LF OF 15" RCP MIN. 0.50%
DETAIL FOR OUTLET
s" DIP POND DRAT
NTH TRASH RACK
WATER TIGHT JOINTS
STRUCTURE ANCHOR
DEVICES.
INV: 572.00
INV OUT:
572.00
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during construchon: certify conformXy with the
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NOTE: EMERGENCY OVERFLOW WEIRS
SHALL BE STABILIZED WITH
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4-INCH MINIMUM THICKNESS 12" CHAMFER BETWEEN 6" CONCRETE SPILLWAY DEVICE
SLOPED AREA AND TOP OF WITH #4 REINFORCING BAR
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+ + + + + {
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SPACING t ROUGH CUT PRESSURE ASTM D 698 P
TREATED, #1 SOUTHERN + + + + + + + + + T +
_ YELLOW PINE RAILS t F + ++ . +++ + +. + +T i + + +-F _1' + IN. FABRICr++ NON -WOVEN
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SPACING " _ 2"X2" GALV. WIRE MESH _.
FABRIC FASTENED TO ,. r y✓ 10' /�c ' I I _ • 0 <
-- _ �i I= ;thy a
EQUAL FENCE ;II TYP _ a
- -' ._. _._, _, 1 t { + t_ .{ . I .I_- ...._i i - -... FINISHED GRADE IF -AI (i \2qx ��z 7 ,ply �:NE�?'fPOp�
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it i l: 11i aii l4
1 140N OR APPROVED EQUAL),
�,1-
JI CONCRETE FOOTING AT END I I III- 4" VERT. OVERLAP SEAM 12" MIN.
Q POSTS, GATE POSTS AND AT I�� III (� CLEANOUT-TYP.
II II �- GRADE SUBGRADE OF
EVERY TENTH POST IN LINE
•jl- li - ..I COMPACTED SAND FILTER AT 2% TO PERFORATED UNDERDRAIN, SEE
(= SUBGRADE PLAN VIEW OF SAND FILTE
SUBDRAIN, TYP. p edEtormwaterPermitDocuments
FOR DIAMETER AND NUMBE in accordance with thesedonxsantsis
NOTES 18 #5 WASHED UNDERDRAINS REQUIRED r�u�ui'eththe atorrinwater thestomwaterRystem. North CaroMna
STONE 12° MIN. DEPTH OF #57 STONE mlee require that the stormwater system deslpMr
1• ALL WOOD SHALL BE PRESSURE TREATED WITH COMPACTED EARTH AT MID -POINT BETWEEN DRAINS tMpecldurirgconstruction; certify contomiNyw#hthe � N
CHROMATED COPPER ARSENATE @ NET RETENTION OF BACKFILL FOR LINE plane and specs; andcertfycompt1008(jKhthe o
0.40 LBS/C.F. WOOD SHALL BE DRIED AFTER TREATMENT. POSTS atotmwelerruies.(tBANCnC2H.t0allaj; o � O
2. Permit # DeM 2.b t 4 °O N Litt
BACKFILL ALL POSTS AND RESTORE GRADE AT POST trC slon D ttNetertatmllY o V
Sheet #�S02 Revision Detet4'
BASE TO ORIGINAL CONDITION. REMOVE ANY EXCESS SOIL
z �
t FROM POST BASE. m < w
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SPLIT RAIL FENCE WITH WIRE MESH 2� SAND FILTER 0