SW7061025_APPROVED PLANS_20070717

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

SITE
SOUNDALBEMRLE
SOUND
SOUTH
CURRITUCK
COUNTY
NORTH CAROUNA
VICINITY MAP
SCALE: 1'=2000'
0
1
POINTE GOLF COURSE
NOTES:
1. DEVELOPERS/OWNER: HARMONY BAY, L.L.C. FORTUNE BAY COMMERCIAL, L.L.C.
P.O. BOX 279 P.O. BOX 279
HARBINGER, N.C. 27941 HARBINGER, N.C. 27941
252-207-2189 252-207-2189
ING HWY 158 PIN 0124-000-057A-0000
HARMONY BAY LC TRACT ADJOIN US
2. SUBJECT PROPERTIES:2.79 AC. L
2.97 AC. HARMONY BAY, LLC TRACT ADJOINING US HWY 158, PIN# 0124-000-0054-0000
ING U HWY 158 PIN 0124-000-0055- 000
0.53 AC. HARMONY BAY, LLC TRACT ADJOIN S // 0
1.33 AC. PORTION OF HARMONY BAY, LLC TRACT ADJOINING NORTHSIDE ROAD, PIN# 0124-000-0056-0000
4.58 AC. PORTION OF FORTUNE SAY COMMERCIAL, LLC TRACT ADJOINING US HWY 158.
PIN # 0124-000-057E-0000
3. TOTAL PROJECT AREA :12.20 AC.t -
4. EXISTING SITE ZONING : GENERAL BUSINESS/MULTI-FAMILY OVERLAY
S. FEMA DATA: FIRM 3720 983700J (DEC. 16, 2005), ZONE AE (EL 7) /ZONE X. SHADED ZONE X
e (SUBJECT TO CHANGE)
6. ELEVATIONS (NAVD 1988): AS SHOWN
7. REFERENCE PLAT: "4 PARCELS OF LAND - DEED BOOK 782, PAGE 916, PREPARED FOR HARMONY BAY,
LLC'. BY MESA PROFESSIONAL CORPORATION, DATED 3/19/06 & "FORTUNE BAY GOLF CLUB, LLC, PARCEL OF
LAND, KILMARLIC CLUB, BY MESA PROFESSIONAL CORPORATION, DATED 3/28/06
8. LOT COVERAGE DATA:
TOTAL PROJECT AREA: 12.19B AC.
MAXIMUM ALLOWABLE DENSITY: 1 UNIT PER 10,000 SF
MAXIMUM # OF UNITS: 53
MAXIMUM LOT COVERAGE: 40% OR 4.88 AC.
PROPOSED BUILDINGS: 112,369 SF OR 2.57 AC.
PROPOSED ROADWAYS & PARKING: 82,986 SF OR 1,91 AC.
PROPOSED OPEN SPACE CONCRETE SIDEWALK AREA: 10,804 SF 0.24 AC.
PROPOSED SURFACE WW SYSTEM COMPONENTS: 100 SF OR 0.01 AC.
TOTAL LOT COVERAGE: 206,159 SF OR 4.73 AC. (38.78%)
PROVIDED OPEN SPACE: 238,518 SF OR 7.14 AC.(5B.53%)
FLOOR AREA RATIO CACLULA11ONS
BUILDING "A' 14,224 SF
BUILDING "B" 8,705 SF
BUILDING "C' 14,224 SF
BUILDING 'D" 8,705 SF
BUILDING "E" 14,224 SF
BUILDING "F" 8,705 SF
BUILDING "G7 14.224 SF
BUILDING 'H" 14.224 SF
BUILDING '1- 14,224 SF
BUILDING "J" 8,705 SF
BUILDING "K" 8.705 SF
BUILDING 'L- 8,705 SF
BUILDING 'M" 14,224 SF
TOTAL 151.798 SF (3.48 AC.)
FAR = TOTAL GROSS FLOOR AREA/TOTAL LOT AREA
FAR - 151,978 SF/ 531345 SF = 0.286
9. REQUIRED PARKING:
2 SPACES PER 1 UNIT
REQUIRED # OF SPACES: 106 SPACES
PROVIDED NUMBER OF SPACES: 126 SPACES
10, THE USE OF LAND WITHIN A FLOODWAY IS SUBSTANTIALLY RESTRICTED
BY ARTICLE 16 OF THE CURRITUCK COUNTY UNIFIED DEVELOPMENT
ORDINANCE.
11. AS OF THE RECORD DATE OF THIS PLAT, SOME PORTIONS OF
THIS DEVELOPMENT ADJOIN LAND USED FOR ACTIVE AGRICULTURE
PURPOSES AYMICH MAY INCLUDE, BUT NOT BE LIMITED 70 ACTIVITIES
SUCH AS DUST GENERATION, SPRAYING OF CHEMICALS, ETC., THEREFORE,
FURTHER INVESTIGATION MAY BE DESIRED BY PROPSPECTIVE PURCHASERS.
12. NO '404" JURISDICTIONAL WETLANDS EXIST UPON THE SUBJECT PROPERTY
12, SEWAGE TREATMENT NOTES:
(7) PROPOSED WATERWATER TREATMENT SYSTEMS TOTAL
(5) 2.880 GPO LOW-PRESSURE PIPE DISPOSAL SYSTEMS W/SEPTIC TANK/PUMP TANK PRETREATMENT UNITS
(1) 2,880 GPD LOW-PRESSURE PIPE DISPOSAL SYSTEMS W/ SEPTIC TANK/ADVANTEX PRETREATMENT
UNITS/PUMP TANK
(1) 1,080 GPO LOW-PRESSURE PIPE DISPOSAL SYSTEMS W/SEPTIC TANK/PUMP TANK PRETREATMENT UNITS
UNITS (A/B),(C/D),(F/G),(H,J),(L/I) & (K/M) CONSISTS OF A DESIGN FLOW OF 2,880 GPD (5 UNIT + 3 UNIT)
8 UNITS ` 3 BEDROOMS/UNIT ` 120 GPD = 2,880 GPD
UNIT E CONSISTS OF A DESIGN FLOW OF 1,080 GPD (5 UNIT)
5 UNITS - 3 BEDROOMS/UNIT • 120 GPD = 1,080 GPD
REO'D ACTIVE DRAINFIELD/REPAIR AREA = 5,760 SF (2,880 GPD) NO PRETREATMENT
= 2.160 SF (1,080 GPD) NO PRETREATMENT
2,880 SF (2,880 GPD) W/ PRETREATMENT
ALL PROPOSED WW TREATMENT & DISPOSAL SYSTEM COMPONENTS WILL BE LOCATED BELOW THE GROUND
SURFACE WITH THE EXCEPTON OF THE ADVANTEX PRETREATMENT UNIT WIiICH WILL HAVE AN DOOR LOCATED
JUST ABOVE THE FINISHED GRADE
SKETCH DEVELOPMENT PLAN FOR
THE VILLAS AT KILMARLIC
POPLAR BRANCH TOWNSHIP CURRITUCK COUNTY NORTH CAROLINA
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U.S. HWY 158 (CARATOKE HWY.)
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SITE DEVELOPMENT OVERVIEW
SCALE: 1 "=60'
GRAPHIC SCALE
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( IN FEET )
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SHEET
SHEET IN©EX
DESCRIPTION
1
COVER SHEET AND SITE LOCATION
2
EXISTING SITE FEATURES
3
PHASING PLAN
4
SITE DEVELOPMENT PLAN
5
EROSION & SEDIMENT CONTROL PLAN
6
GRADING PLAN
7
DRAINGE/STORM WATER MANGEMENT PLAN
8
WATERLINE EXTENSION PLAN
9
WASTEWATER PLAN
10
LIGHTING PLAN
11
LANDSCAPING PLAN
12
STORM WATER EROSION CONTROL DETAILS
13
WATERLINE EXTENSION DETAILS
14 15
WASTEWATER DETAILS
16
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NOTE;
SURVEY INFORMATION TAKEN FROM 'BOUNDARY SURVEY
FOR HARMONY BAY, LLC. 4 PARCELS OF LAND, D.B. 782.
PG. 916• PREPARED BY MESA PROFESSIONAL
CORPORATION, DATED 3/20/06 AND TOPOGRAPHICAL
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GENERAL PROJECT NOTES:
CONSTRUCTION SEQUENCE
I. PROJECT NAME: VILLAS AT KILMARLIC
SCHEDULE
LAND GRADING CONSTRUCTION SPECIFICATIONS
PERSEEDING
TEMPORARY SEEDING
SODDING
POPLAR BRANCH TOWNSHIP, CURRITUCK COUNTY,NORTH CAROLINA
CONSTRUCTION ACTIVITY
SCHEDULE CONSIDERATION
1, Construct & maintain ail erosion & sedimentation control practices &
purposeMANENT
of permanent seeding is reduce erosion
The purpose of temporary seeding is to temporarily stabilize
denuded areas that will not be brought to final grade fora
The purpose of permanent seeding is to prevent erosion
2.DEVELOPERJAPPLICANT:SEA GRASS, LLC.
Construction Access-
First land -disturbing
measures in accordance with the approved sedimentation control plan and
one decrease
d cease sediment yield from disturbed areas, and
ur
to stabilize in that is
period of more than 21 calendar days
and damage from sediment and runoff by stabilizing the
4326 SHADY LANE
Construction entrance,
activity -Stabilize bare areas
construction schedule.
permanently such areas Q manner
economical, adapts to site conditions, and allows selection
soil surface with permanent vegetationfor the purpose of:
-the provision of immediate vegetative cover in critical areas
KITTY HAWK, NO 27949
construction routes, equipment
immediately with grovel &
of the most appropriate plant materials. These areas
TEMPORARY SEEDING SPECIFICATIONS
-to stabilze disturbed areas with a suitable plant material
3. PROJECT DESCRIPTION: MULTIFAMILY TOWNHOUSE DEVELOPMENT
parking areas
temporary vegetation as
2. Remove good topsail from areas to be graded and filled, and preserve it
must be seeded or planted within 15 work-ng days or 90
Seeding Recommendations for Late Winter & Early Spring
that cannot be established by seed.
4. NEAREST RECEIVING STREAM: ALBEMARLE SOUND
construction takes place.
for use in finishing the grading of all critical areas.
calendar days after final grode is reached, unless temporary
SEEDING DATES- December 1 to April 15
-to stabilze drainageways & channels and other areas of
5. CLASSIFICATION: SB
Sediment Traps & Barriers
Install principal basins offer
3. Scarify areas to be topsoiled to a minimum depth of 2 inches before
stabilization is applied.
SEEDING MIXTURE
Species Rote (lb/acre)
concentrated flow where flow velocities will not exceed that
6. PROJECT AREA TABULATION:
Basin traps sediment fences
construction site is access d
Placing topsoil.
PERMA T
R e 120
specified grass lining.
TOTAL PROJECT AREA
12.20 AC.
TOTAL PROPOSED BUILDING AREA:
2.58 AC.
TOTAL PROPOSED DRIVE AREA :
1,57 AC.
TOTAL PROPOSED CONC. PARKING & WALK AREA
0.58 AC.
TOTAL PROPOSED DRAINAGE AND GRADING AREAS:
527 AC.
MISC. DISTURBED AREA:
1.0 AC,
TOTAL DISTURBED AREA'
1 11,0 AC.
& outlet protection
e .
Install additional traps and
NEVI SEEDING SPECIFICATIONS
Seeding Recommendations for Summer
y
Annual Lespedeza 50
SODDING SPECIFICATIONS
barriers as needed during
4. Clear & grub areas to be filled to remove trees, vegetation, roots, or
SEEDING DATES- April to July
(Kobe)
Sod Quality
groding.
other objectionable material that would affect the planned stability of fill.
SEEDING MIXTURE
'Omit annual lespedezo when duration of temporary cover
-Sod should be machine cut at o uniform depth of 1/2-2 inches
Runoff Control-
Install key practices after
5. Ensure that fill material is free of brush, rubbish, rocks, logs, stumps,
Species Rate
Common bermudagross 10/1.000 sf (sprigs)
is not to extend beyond June
-Sod should not have been cut in excessively wet or dry weather.
-Sections of sod should be standard size as determined by the
Diversions, perimeter dikes,
principal sediments traps and
building debris, and other materials inappropriate for constructing stable fills.
1-2 ib/1,000 sf '(seed)
Soil Amendments-
supplier, uniform, and untorn.
water bars, and outlet
protection
before land grading. Install
additional runoff -control
6. Place all fill in layers not to exceed 9 inches in thickness, and compact
Y P
SEEDING NOTES-
Follow recommendations soil tests of apply 0
-Sections of sod should be strong enough to support their own
the layers as required to reduce erosion, slippage, settlement,
1, Sprig or sod. Moisture is essential during initial estOblishment.4raund
10- 10acre
agricultural limestone and 750 lb/acre 10-10-10 fertilizer.
o
weight and retain their size and shape when lifted by one end.
conveyance measures during
Y 9
or other
related robl
Sod must be kept watered for 2-3weeks, but can be planted
-Harvest, delivery, and installation of sod should take place within
grading. p ems' earlier or later than sprigs. Mulch- a period of 36 hours.
NOTE: Apply 4,000-lb/acre straw. Anchor straw by forking with asphalt,
All areas have been calculated utilizing the actual Runoff Conveyance System- Where necessary, stabilze 7. Do not incorporate frozen material or soft, mucky, or highly compressible Soil Amendments- netting, or a mulch -anchoring tool. A disk with blades set near) Soil Amendments -
boundary properties within the Autocads0tware_ Stabiles streambanks, storm streambanks as ecrt as possible. materials into fill slopes- 9• 4 Y Apply time and fertilizer according to soil tests or apply
Y P Apply lime and fertilizer according to soil tests or apply straight can be used as a mulch -anchoring tool. pp y g pp y
drains, channels, Inlet & outleE Install principal runoff conveyance / 4 4 / / p g stone and 1,000 Ib/acre
NOTE: 3,000 lb/acre acre round agricultural limestone and 500 Ib acre 2 tons acre of pulverized agricultural lime
protection, slope drains system with runoff -control slippage.
Do not place fit on a frozen foundation, due to possible subsidence and
All excavatedmateriatoccurringduringthecourseofCnnstructionwillremainon-site slippage. 10-10-10 fertilizer, or 50 lb/acre nitrogen from turf -type Maintenance- 10-10-10 fertilizer in the fall, or 5-10-10 in spring.
measures. Install remainder of Refertilize if growth is not full adequate. Reseed, fertilize and mulch
I the utilization of the roadway and buu utilized
d for pond
a preparation in conjunction slow -release fertilizer. Add 25-50 Ib/acre nitrogen at 9 Y q
system ufter grading.
with providing eanhened material to be utilized for pond idling and berm mnstuction. 2-3 week intervals through midsummer, immediately following erosion or other damage. Prior to laying sod, clear the soil surface of trash, debris,
9. Keep diversions and other water conveyance measures free of sediment 9 Tools, branches, stones, and clods larger than 2 inches in
NOTE: Lone! Clearing & Grading- Begin major clearing and grading during all phases of development. I
Seeding Recommendations for Summer diameter, Fill or level low spots in order to avoid standing
Site preparation- cutting, after principal & key Sprigging- 9 P g
Proviing completions
fanyp(temporas or permanent)permanent on groundcovd slopes lr'oarn 21 days 10. Handle sees or rims encountered during Plant sprigs in furrows with a tractor -drawn transplanter, SEEDING DATES- April 15 to August 15 water. Rake or harrow the site to achieve a smooth and
disturfollowing completions ofanyphaseof ays or 90;a ndard ys(which rover soar all fining & groding, sediment runoffecontrol measures are° P P 9 g constructicn in accordance
r. , traps, barriers, diversions, installed. Clear borrow & disposal with approved methods. or broadcast by hand. SEEDING MIXTURE level final grade. Complete soil preparation by rolling or
following
areas Lion C working days eel pmendardays (whichever is shorter} P Species Rate (lb/acre) cultipacking to firm soil.
drains, surface roughening areas as needed. Install Furrows should be 4-6 inches deep and 2 feet apart. German Millet 40
following completion of construction or development 9 9
additional control measures es 11, Provide ° groundcovin (temporary or permanent) an exposed slopes within Soil Amendments- Sad Installation -
There calender ro following completion Place sprigs abogrout 2 ft. °port in a row with one end 1. Moistening the sod after it is unrolled helps maintain Viability.
NOTE: grading progresses. Mork trees & days, 9 p lion of any phase of grading; and, a
There are nojunsdiaionalwetlands located on-si!e. buffer areas for preservation. Permanent groundcover for all disturbed areas within 15 working days or 90 at or above ground level. Follow recommendations of Soli tests or apply 2,000 lb/acre ground 9 p y.
agricultural limestone and 750 lb/acre 10-10-10 fertilizer. Store in shade during installation.
calender days (whichever is shorter) following completion of construction or Broadcast at rates shown above, and resslsprigs into - 2. Rake the soil surface to break the crust just before laying
Surface Stabilization- Apply temporary or permanent development. iMulch-
A. sod. During the summer, lightly irrigate the soil, immediately
SEDIMENTATION AND EROSION CONTROL NOTES: Temporary & permanent stabilization measures the top 1/2-2 inches of soil with a disk set straight before laying sod to cool the soil and reduce root burning &
seeding, mulching, 12. Provide adequate protection from erosion for all topsoil stockpiles, borrow so that sprigs are not brought back toward the surface. Apply 4,000-lb/acre straw. Anchor strow by tacking with asphalt, beforek.
A. NARRATIVE AND SITE DATA 9, g• sodding, immediately on all disturbed q P P P netting, g y
This proposed development will consist of utility, parking, and drainage infrastructure riprop. areas where work is delayed or areas, and spoil areas. g, or a mulch -anchoring tool. A disk with blades set near)
Mulch- straight can be used as a mulch -anchoring tool. 3. Do not sod on grave, frozen soils, or soils that have been
improvements to service the rig proposed Villas at line west
side f US residential complete. Do not mulch, 9 9 treated recently with sterilonts or herbicides.
MAINTENANCE
townhouses .8 be located along North Side Lane on the west side of nt HWY h C 4. Lay the first row of sod in o straight line with subsequent
Y 9
Periodically
Maintenance- q
Building In od call check all Gaited ar h ,� stall necessary erosion areas & the supporting erosion
a & Y e osron sedimentation The
proposed
N sed de W i Poplar Township 99 RP & S a tatiort 0 n the Po a Branch To sh of Cumtuck Count Nar'Jl Carolina. Y 4
( P ro a. ). P Y.Maintenance-rows laced parallel to n in i and butt tightly against each r
P P e other.
9 9 Y 9 Refertiti a if growth is no II adequate. e. R frill
control Tactics especially
z t fully a e u t weed fertilize ze and
�, Buildings, utilities avin sedimentation con r s es ° after he° rainfalls. Pr9 Y q control practices Promptly remove
P P Y Erna a all
The at serf , is bounded
mental th with the Est Nona i o dividing 9 paving.P heavy P e Side Lane d d d into TwoY p Do Pi in 9 9 Stagger strips a brick -like otterBer , e n B sure that the sod is
separate West US as work takes place. sediment from diversions and other water -disposal practices. If washouts or Water as needed and mow to 3/4 to 1-inch height. mulch immediately following erosion or other damage. 44 p p
P Y Y not stretched or overlapped and that all joints
158. Existingto breaks occur, repair them immediately. Prompt maintenance of small -eroded Tapdress with 40 lb/acre nitrogen in April, 50 Ito in May,
pograpngroadlaysasa smooth
elevation l�!•, 5 Seeding Recommendations for Fall are butted tightly to prevent voids. Use a knife
areas before h m in
found elan the bounding roadways andasmooth ridge the sites northern Landscaping &Final Stabilize all open areas, including they become significant gullies is an essential part of an 0 lb June, 50 ib in July, and 25 Ito in August. 9
g g Ys g 9 SEEDING DATES- August 15 to December 30 or sharp spade to trim and fit irregular shaped areas.
boundary, towards two existing ponds that are located near each of the 2 sub areas Stabilization- borrow & spoil areas. Remove & effective erosion &sedimentation control plan. 4 p g pe indicular
O SEEDING MIXTURE 5. Install strips of sod with their longest dimension rp
respective These Topsoiling, trees &shrubs, stabilize all temporary control
pe ry, pardsarereGamafwrsoftwobonowpitsand to the slope. On scopes of 3:1 or greater, or wherever erosion may
t permanent seeding, mulching, measures. Species Rate (lb/acre) p pegs or staples.
r
trot water surface elevations measured at 6.0 msl 1 . There i n existing r typical ere s a e st g 725'wide be ° problem, secure sod with p
sodding, riprop CONSTRUCTION ENTRANCE SPECIFICATIONS Rye 120
power easement that straddles the entire western boundary of the site thatacunentty 6. As sodding Of clearly defined areas is completed, roll
1. Length - minimum of 50' (•30' for single residence lot). Soil Amendments-
clearwith grass vegetation. The balance of the southern site area is currently wooded sod to provide good contact between roots and soil.
Follow recommendations f g t r I I r
with tall pines and Tight underbrush and no existing developments. The northern sYe o so tests o apply 2,000 b/acre ground 7. After rolling, irrigate until the soil is wet 4 inches below the sod.
area has a few woodland packets located near its center and a tree line running along 2. Width - 12' minimum, should be flared at the existing rood agricultural limestone and 1,000 Ib/acre 10-10-10 fertilizer. 8. Kee sodded areas moist to a depth of 4 inches until
Par 0 9 STEEL POST P P
the ridge on the nonhem boundary. There were several existing small dwellings locate 36" HIGH MAXIMUM to provide a turning radius. the gross takes root, This can be determined by tugging on the sod.
out along HWY 158 that have since been removed for the purpose of the development. SILT FENCE INSTALLATION SPECIFICATIONS: Mulch -
out Mowing should not be attempted until the sod
3. o xtile fabric fit Apply -I r r Gi to ab ri ter cloth shall be (aced ever the et in 4,0r b/ac a straw. Anchor straw by tacking with asphalt, is Firmly rooted, usual) 2-3 weeks.
Thera are no jurisdictional wetlands located within the limns o1 this project. PONDING HEIGHT ) .. p y Y
An on -site visit was conducted by David Meyer, L.S.S. with Protocol Sampling Service, 1. FENCE POSTS SHALL BE A MINIMUM OF 36' LONG DRIVEN 16' MINIMUM INTO THE existing ground prior to placing stone, The plan approval netting, or amulch-anchoring tool. A disk with blades set nearly
Inc. of Raleigh, to investigate the existing groundwater profiles through multiple soil GROUND. STEEL POSTS WILL BE STANDARD T OR U SECTICN WEIGHTING NOT LESS authority may not require single family residences to use Straight can be Used as a mulch -anchoring tool. Sodded Waterways
borings to determine the soils suitability for the proposed Stonnwater and Wastewater THAN 1.00 POND PER LINEAR FOOT. geotextile. 1. Prepare soil as described above.
management infrastructures, Seven borings were advanced across the site and the 2. GEOTEXTILE SMALL BE FASTENED SECURELY TO EACH FENCE POST WITH WIRE Maintenance- 2. Lay sod strips perpindicular to the direction of flow, with
majority of the soils encountered were found to belong to the BOjac and Conetoe loamy TIES OR STAPLES AT TOP AND MID -SECTION AND SHALL MEET THE FOLLOWING - FLOW 4. Stone -crushed aggregate (2" to 3") or recicimed or Repair and refertilize damaged areas immediately. Tapdress with the lateral joints staggered in a brick -like pattern.
sand series, which match those mapped in the USDA soil survey maps farCurrtuck REQUIREMENTS FOR GEOTM E CLASS F: 3/4' MINIMUM recycled concrete equivalent sholl be placed at least 6" deep 50 lb/acre of nitrogen in March. If it is necessary to extend temporary Butt edges tightly together.
County. These soils are described as being well drained and are typically found in sandy Tense sirengm sit l5s,n (min.) Te M51R 509 DRAIN INIMU over the length and width of the entrance. cover beyond June 15. overseed with 50 Id/acre Kobe lespedezo in late
alluvial sediments along small streams and rivers in the Coastal Plain. Subsurface renAae Modvfus 20lbsAn(min.) TestMsVT509 February or Early March. Maintenance-
permeabilt! ies range train 0. 6 to 6. 0 inch es per In our but can exceed 20 inches per hour in ParRaa 0.3gat ftIminute (emiIiTescklsvR712 5. Surface Water - all surface water flowing to or diverted After the first week, water as necessary to maintain adequate
FRedn ER ° min\ 75 A Tes MSA1T 322
the underlying sand Layers. Seasonal high water tables in these soils typically range from 9 �r ( ') t IIII �j\\, /\\// toward construction entrances shall be piped through the moisture in the root zone &prevent dormancy of the sod.
4.0 to 6.0 feet below the undisturbed landscape but were found in this case to range 3. WHERE ENDS OF GEOTO(TILE FABRIC COME TOGETHER, THEY SHALL BE \ I /\/� ,--.r€ T.,t/\/\, 6" 70 8' entrance, maintaining positive drainage. Pipe installed through
`.� \ \
between 30" and 55' below existing grade. Since sail borings were not advanced in the OVERLAPPED, FOLDED AND STAPLED TO PREVENT SEDIMENT BYPASS. \/I� ""'t ' \ \ the stabilized construction entrance shall be protected with a Do not remove more than one-third of the shoot in any one
exact locations of the proposed stortnwater management basins an average seasonal 12"MIN. \\ \\\'���\i\� mountable berm with 5:1 slopes and a minimum of 6" of stone mowing. Grass height should be maintained between 2-3 inches
high water table relative to existing grade will be taken. For the purpose of this design the 4. SILT FENCE SHALL BE INSPECTED AFTER EACH RAINFALL EVENT AND MAINTAINED /� / /� over the pipe. Pipe has to be sized according to the drainage. unless otherwise specified.
WHEN BULGES OCCUR OR WHEN SEDIMENT ACCUMULATION REACHED 50% OF THE \
Ih- When the i I hi seasons high is given as 30'bis which is the shallowest measured across SCE 5 located at ° h sot and has no
g g s ross FABRIC HEIGHT, l �// / 9 P 50' MINIMUM After first growing season, established sod e / wires
drainage to rive i w' the site. The northern of the(2}proposed stormwater management basins wi8 be �\�. g convey a pipe Ill not be necessary. Pipe should 9 9 q
6'X8'TRENCHWITH LENGTH fertilization, and may also require time. Follow soil test
excavated in an area that wrrentty has an average existing grade of 9.0'msl and EXTRA STRENGTH FILTER FABRIC be sized according to the amount of runoff to be conveyed. A % T Y q
therefore the SHWT is given as 6-Smst. The construction of the southern stormwater COMPACTED BACKFILL 6" minimum will be required. recommendations.
9 NEEDED WITHOUT WIRE MESH SUPPORT q ' 10' MIN.
management basin will simply involve the expansion of an existing pond thatcurrently
has a water table measurement of approximately 6.0'msl. For the purpose of this design
SHWT for this basin will also be given as 6.5'msl.
B. MAINTENANCE:
1. CHECK TEMPORARY EROSION CONTROL DEVICES AFTER EACH
SIGNIFICANT RAINFALLAND/OR BI-WEEKLY. REPAIR AND REMOVE
SEDIMENT BUILD-UP AS NECESSARY.
2. CHECK STABILIZED AREAS AFTER EACH SIGNIFICANT RAINFALL
EVENT. RILLS AND GULLIES MUST BE REPAIRED, RE -SEEDED AND
MULCHED AS SOON AS POSSIBLE. TEMPORARY DIVERSIONS MAY BE
NECESSARY UNTIL NEW PLANTS DEVELOP.
BARE SPOTS MUST BE RELIMED. FERTILIZED, MULCHED AND
RESEEDED AS PROMPTLY AS POSSIBLE. YEARLY REFERTILIZATION
MAY BE REQUIRED TO MAINTAIN PRODUCTIVE STANDS.
3. PERFORM ROUTINE MAINTENANCE (INCLUDING MOWING AND CLEANING
OF ROADWAY SWALE) ONCE FINAL STABILIZATION HAS OCCURRED.
C. NOTE:
THE INTENT OF THIS PLAN IS TO:
- MINIMIZE THE EXTENT AND DURATION OF DISTURBED SOIL
EXPOSURE.
- PROTECT DISTURBED AREAS FROM STORMWATER RUNOFF.
- STABILIZE DISTURBED AREAS AS SOON AS POSSIBLE.
- MAINTAIN LOW RUNOFF VELOCITIES (AND PROTECTAREAS
WHERE THIS IS NOT POSSIBLE).
- RETAIN SEDIMENT ON SITE WITH SILT FENCING AND SILT DAMS.
THIS PLAN REPRESENTS MINIMUM SEDIMENTATION AND EROSION CONTROL
MEASURES. ADDITIONAL MEASURES AND DEVICES MAY BE REQUIRED AS
CONSTRUCTION PROCEEDS.
NOTES:
1. FOUNDATION: WHERE THE TRENCH BOTTOM IS UNSTABLE, THE
CONTRACTOR SHALL EXCAVATE TO A DEPTH REQUIRED BY THE
ENGINEER AND REPLACE WITH A FOUNDATION OF CLASS 1 OR It
MATERIAL AS DEFINED IN ASTM D2321, 'STANDARD FRACTICE
FOR INSTALLATION OF THERMOPLASTIC PIPE FOR SEWERS AND
OTHER GRAVITY -ROW APPLICATIONS,' LATEST EDITION; AS AN
ALTERNATIVE AND AT THE DISCRETION OF THE ENGINEER, THE
TRENCH BOTTOM MAY BE STABILIZED USING A WOVEN
GEOTEXTILE FABRIC.
2. BEDDING SUITABLE MATERIAL SHALL BE CLASS 1,
It OR III AND INSTALLED AS REQUIRED IN ASTM
D2321, LATEST EDITION.
UNLESS OTHERWISE SPECIFIED BY THE ENGINEER.
MINIMUM BEDDING THICKNESS SMALL BE 4- (100mm)
FOR 4'-24' (100-600mm) AND 42'-48'(I05D-t200mm)
CORRUGATED POLYETHYLENE PIPE (CPEP); 6' (150mm)
FOR 30--36- (750-900mm) CPEP.
3. HAUNCHING AND INITIAL BACKFIIL: SUITABLE MATERIAL
SHALL BE CLASS 1, II OR III AND INSTALLED AS
REQUIRED IN ASDA D2321, LATEST EDITION.
4. UNLESS 0111.ERWISE SPECIFIED BY THE ENGINEER,
MINIMUM TRENCH WIDTHS SHALL BE AS FOLLOWS:
NOMINAL 0 "IN. RECOMMEi
in (min) TRENCH WIDTH, in (mm)
4 ((100)) 21 530
6 (150) 23 58D
B 20a 25 630
10 250 28 710
12 '00 31 790
IS 375 34 860
18 450 39 990
24 600 48 Jl 220
30 7_a 66 7660
36 900 78 1980
42 (1050) 83 2110
48 1200 89 2260
60 (150o) 102 (2590)
5. MINIMUM COVER: MINIMUM RECOMMENDED DEPTHS OF
COVER FOR VARIOUS UVE LOADING CONDITIONS ARE
SUMMARIZED IN THE FOLLOWING TABLE UNLESS
OTHERWISE NOTED, ALL DIMENSIONS ARE TAKEN FROM
THE TOP OF PIPE TO THE GROUND SURFACE
SURFACFrVc MINIMUM RECOMMENDED
LOADING CONDITION COVER. in (mm1
H25 (FLEXIBLE PAVEMERT) 12 (300)'
H25 (RIGID PAVEMENT) 12 (300)
EBO RAILWAY 24 (610)
HEAVY CONSTRUCTION 48 (122D)
TOP OF PIPE TO BOTTOM OF BITUMINOUS PAVEMENT SECTION
ATTACH FILTER FABRIC
SECURELY TO UPSTREF
SIDE OF POST
STEEL POST - I IR-
,�'�\ \\\
10' MAXIMUM SPACING WITH
WIRE SUPPORT FENCE
•\\\/\///
V MAXIMUM SPACING WITHOUT
WIRE SUPPORT FENCE
SILT FENCE
INSTALLATION
NOT TO SCALE ISOMETRIC VIEW
SILT FENCE INSTALLATION
NOT TO SCALE SECTION YEW
6. Location - A stabilized construction entrance n z nstruct on e t once she be
located at every point where construction traffic ent
ers or
leaves a construction site. Vehicles leaving the site must travel
over the entire length of the stabilized construction entrance.
3' MCVNTPEL
BERM (6' MIN.)
50' MINIMUM DT$TiNG
a
AVEMENT
5 t
EARTH FILL
•' GEOTEXTILE CLASS 'C OR BETTER PIPE AS NECESSARY
MINIMUM 6' OF 27-3' AGGREGATE
OVER LENGTH AND WIDTH OF
ROUND STRUCTURE
EXISTING cCONSTRUCTION ENTRANCE PROFILE VIEW
NOT TO SCALE
SEE
s
BERM TO BE
ESTABLISHED WITH
-BERMUOAGRASS
i
-N SOD BERM WITH TIFWAY BFRMUOAGRAS9 GEOTEXTiLE REINFORCEMENT MATTING
12' MINIMUM t0" MIN.�� EXISTING
UNE WITH EROSION CONTROL STONE
H PAVEMENT
eEM LIEv. t0(wDTWEIR ELEY: 9.5'3:
t✓.1O' MIN. V BOTTOM WIDTH
CONSTRUCTION ENTRANCE
PLAN VIEW EMERGENCY OVERFLOW WEIR DETAIL
NOT TO SCALE NOT TO SCALE (LOCATIONS AS DENOTED ON PLAN)
'UNLESS
3THERWISE
VOTED ON
'LAN SHEET)
(UNLESS 9'
OTHERWISE
NOTED ON
PLAN SHEET) 0 % -r
d
SECTION A -A T
FILTER CLOTH KEY IN 6'-9'N RECOMMENDED FOR ENTIRE PERIMETER
1. APRON LINING MAY MATERIAL IS RIP -RAP
RIP -RAP CULVERT OUTLET APRON 2. La IS THE LENGTH OF THE RIPRAP APRON
NOT TO SCALE (LOCATIONS AND SIZE AS DENOTED ON PLAN SHEET) 3. d = THE STONE DIAMETER IS 6'
EI£J. VARIES
SOD BASIN SIDE SLOPES &BOTTOM 5EVUENT ACCUMULATION BENCRMIRK
BASIN : TOP AREA; (SEE TABLE). WITH TIFWAY BERMUDAGRASS (SEE TABLE)
ILL
-`A� BOTTOM AREA: (SEE TABLE).
POND "P n/ATICN: SEE TABL _ � MA101AUM STORAGE ELEY.:70.0'3:
r - 11 Jr • t n ... (SEE TABLE) (SEE TABLE) , -� ,••• - -.
i DESIGN STORAGE L1EV.:7.2'f 1
SHWL 6.5'
NEVI :PUAL POOL EL5.5'
(FILL
(FLL. _ - SIDE INFILTRATION
- f AREA OF PIPE, POND 3OT-CU ELEV.: (SEE TABLE)
Y i-T ASPHALT AREA LOCATED AROUND THE
TO 6' AGGREGATE BASE COURSE �P O�ETER THE SEASONAL THE BASIN.
SIIGH
OF PIPE WATER TABLE• USED
LTERIAL TYPICAL WET -INFILTRATION BASIN SECTION DETERMINE INFILTRATION
NOT TO SCALE NOT TO SCALE ORAwOOWN OF THE DESIGN
STORM VOUME,
THE ASSOCIATIVE STORMWATER MANAGEMENT CALCULATIONS REFLECT THE DESIGN STORAGE
UTILIZING THE SEASONAL HIGH WATER ELEVATION AS THE BASE ELEVATION FOR DETERMNATION
OF STORAGE REQUIREMENTS
TYPICAL TRENCH CROSS-SECTI ON
(N.T.S.)
DRAINAGE PIPE COVERAGE DETAIL
NOT TO SCALE SECTION VIEW
WET -INFILTRATION BASIN TABLE
BASIN LD• TOP ELEVATION fft1 TOP AREA rS.F.I PERM. POOI. FI FVATICIN (Ft l oeau rA m STORAGE TOT °nnl Aoe • ncoru m., �,.��..r.....� ,.,,, �•, SIDE
BASIN 'A'
10.0
20.35D
6.5
14,150
3.5
60,300
3:7
6.175
BASIN -B-
10.0
12,250
6.5
7.570
3 5
34 685
o-+
42
.. ++.,..... ,:.� Wl,;, n ,;ANnGZkn@fi rcer Etu mt utaun SiUKAat UTILIZING THE SEASONAL HIGH WATER ELEVATION AS THE BASE ELEVATION FOR DETERMINATION OF STORAGE REQUIREMENTS
SEDIMENT BENCHMARK TABLE
BASIN 1.0. DESIGN DEPTH (Ft) DESIGN BOTTOM ELEV. fFMSL) REMOVAL ELEV. IFMSLI
BASIN -A'
1 3.5
6.5
7-375
BASIN-B'
1 3.5
16.5
7.375
NOTE: ACCUMULATED SEDIMENT SHOULD BE REMOVED DOWN TO THE BASINS ORIGINAL DESIGN DEPTH.
STRUCTURAL DE51GN OF
WEIR BOX BY OTHERS
DUMP STRAP --------
I" REBAR FOR BAG -�
REMOVAL FROM INLET _
DROP INLET SEDIMENTATION
CAPTURE DETAIL
NOT TO SCALE
r
u
0
INSTALLATION DETAIL
140T TO SCALE
DROP INLET GENERAL NOTES
1. DROP INLET DESIGN SPECIFICATIONS SHALL CONFORM To LATEST ASIM
C913 SPECInCATIONS FOR 'PRECAST CONCRETE WATER & WASTEWATER
STRUCTURES.
2. CONCRETE COMPRESSIVE STRENGTH SHALL BE A MINIMUM OF 4000PS1.
3. STEEL REINFORCING DESIGN TO CONFORM TO THE REQUIREMENTS OF
ASTIR C890 SPECIFICATIONS FOR 'STRUCTURAL DESIGN LOADING FOR WATER
& WASTEWATER U R' STRUCTURES' UI AND SHALL ." A GRADE 60 RE -BARS
CONFORMING TO THE REQUIREMENTS iS OF A9TM A6i5 OR WWF CONFORMING
70 THE REQUIREMENTS OF ASi1.1 A185 OR BOTH.
4. PROVIDE ADDITIONAL REINFORCING AT OPENINGS AS REQUIRED.
PER NCOOT REQUIREMENTS OR BOTH.
PARKING
LOT
�- '4 ' A
A A
4 .
A A- A-
A n
4' x 4'
ALUM 0
CAST IRON SECURING
_
STRAP W/ FLAT HEAD
Y DIA. SCH. 80
EXP BOLTS
PVC PIPE,(THR000H
'FERNCO' C.I. TO CAST IRON
SIDEWALK WITH
PVC ADAPTOR DOWNSPOUT
COUPUNG
PARKING LOT)
/
PVC PIPE\ FINISHED
. I IREFER TO ARCH
DRAWINGS FOR
ADDITIONAL DETAIL
Qo(.7-' 000
DOWNSPOUT
OUTLET DETAIL
NOT TO SCALE
CAST IRON MANHOLE RING AND COVER
VULCAN FOUNDRY V-1384 WITH VENTED
UD OPTION. COVER MARKED 'SEWER'
(TYPICAL FOR ALL TANKAGE)
- OR APPROVED EQUAL -
TOP ELEV.: 70.60
S
BYPASS OVERFLOW DEVICE DETAIL
NOT TO SCALE (LOCATIONS AS DENOTED ON PLAN)
WCIR BALFFLE WALL
11 9,40'
18"0 HOPE BYPASS 18"0 HOPE PIPE
\ OVERFLOW W FROM DI 5.
\ To
ROADWAY By
INVIN 6.82'
INV. OUT 7.70'
BYPASS OVERFLOW DEVICE DETAIL
NOT TO SCALE (LOCATIONS AS DENOTED ON PLAN)
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DATE
10 27-06 AS NOTED
OESS'iAER GkCrrO.
BPG DMR
0w.1.1. +n•wO w
13PG DIOR
SHEET:
12 CIF 16
CAD FILE:
I
429000BI
ROJECT NO:
4290
}0JUL IN] INA RY
1 FOR CONSTRUCTION