20070676 Ver 1_Site Plan_20070607

24 23 22 21 20 19 18 17
PROPOSED STORMWATER MANAGEMENT PLAN NOTES
a.) TOTAL LOT AREA 120,232.8 SQ.Ff. PROPOSED AREA TO BE DISTURBED IS 104,544 SQ. FT. f.
b.) ALL DISTURBED AREAS SHALL BE PERMANENTLY STABILIZED WITHIN 15 WORKING DAYS/3d CALENDAR DAYS (WHICHEVER IS SHORTER) OF COMPLETION OF ANY PHASE OF GRADING. IF SAID ACTIVITIES
F OCCUR OUTSIDE THE PERMANENT VEGETATION SEEDING DATES (APR. 1- SEP.30)
THE TEMPORARY VEGETATION SEEDING SPECIFICATIONS SHALL BE FOLLOWED FOR F
PLANTING UNTIL THE NEXT APPROPRIATE PERMANENT SEEDING PERIOD, AT
WHICH TIME PERMANENT VEGETATION SHALL BE ESTABLISHED ACCORDING TO PERMANENT VEGETATION SEEDING SPECIFICATIONS (SEE PERM. & TEMP. SEEDING
SPEC'S THIS SHEET}.
c.) IF EXCESSIVE WIND EROSION OR STORMWATER RUNOFF EROSION DEVELOPS DURING TIME OF
CONSTRUCTION IN ANY LOCATION ON THE PROJECT SITE, ADDITIONAL SAND OR SILT FENCING
SHALL BE INSTALLED AS DIRECTED BY SURVEYOR SO AS TO PREVENT DAMAGE TO ADJACENT PROPERTY. SEE SAND OR SILT FENCE DETAIL THIS SHEET.
d.) DROP INLET PROTECTION TO BE AS FOLLOWS: (IF APPLICABLE)
CONSTRUCT A 2" x 4" WOOD FRAME AROUND DROP INLET WITH GRATE. USE 3' MIN.
STAKES t~ CORNERS OF DROP INLET. DRIVE STAKES DOWN SECURELY INTO GROUND
APPROX. 1.5' INTO GROUND. CONNECT TOPS OF STAKES WITH 2" x 4" FRAME TO PROVIDE STABILITY. WRAP FRAME SIDES WITH SYNTHETIC FILTER FABRIC PLACING
THE BOTTOM 12" IN A TRENCH AROUND OUTSIDE OF FRAME. BACKFILL TRENCH WITH
4" OF CRUSHED STONE OR 12" OF COMPACTED SOIL. FASTEN FABRIC SECURELY TO
STAKES AND FRAME.
e.) SWALE/CULVERT PROTECTION TO BE AS FOLLOWS: PLACE 3 HAY BAILS END TO END ~ 3 LOCATIONS SHOWN ON SITE PLAN. SECURE
HAYBAILS WITH METAL/WOODEN STAKES.
f.) SOIL EROSION AND SEDIMENTATION CONTROLS TO BE INSPECTED, MAINTAINED AND REPAIRED
AS NECESSARY UNTIL PERMANENT CONTROLS ARE ESTABLISHED
E g.) CONSTRUCTION SCHEDULE: 1 OBTAIN PLAN APPROVAL AND OTHER APPLICABLE PERMITS. E
2 FLAG AND/OR ROUGH STAKE WORK LIMITS.
3 HOLD PRECONSTRUCTION CONFERENCE (OWNER, CONTRACTOR. SURVEYOR, AND APPROPRIATE
GOVERNMENT OFFICIALS) AT LEAST ONE WEEK PRIOR TO START OF CONSTRUCTION ACTIVITIES 4) INSTALL SILT OR SAND FENCING ~ LOCATIONS SHOWN ON PLAN
5) COMPLETE CLEARING AND GRUBBING PROCEDURES.
6) GRADE SITE ACCORDING TO PLAN
7) FINE GRADING OF SITE
8) INSTALL AND ESTABLISH PERMANENT EROSION CONTROL FEATURES
9) REMOVE SAND OR SILT FENCE
10) ALL EROSION SEDIMENT CONTROL PRACTICES WILL BE INSPECTED WEEKLY AND AFTER HEAVY RAINFALL EVENTS. NEEDED REPAIRS WILL BE MADE IMMEDIATELY
ALL DISTURBED AREAS SHALL BE SEEDED AND MULCHED
ACCORDING TO THE FOLLOWING SPECIFICATIONS:
PERMANENT VEGETATION TEMPORARY VEG VEGETATION
JCT. 1 - MARCH 31 D
D SEEDING DATES: APRIL 1- JUNE 30/SEPT 1- SEPT 30 (SEEDING DATES: OCT.
SEED MIXTURE APPLICATION RATES/ACRE SEED MIXTURE APPLICATION RATES/ACRE
13AI'ilA ~v L~J.
COMMON BERMUDA 50 LBS.
(UNHULLED) FERTILIZER
GERMAN MILLETT 15 LBS. 10-10-10 ~ 10Q0 LB/AC FESCUE 20 LBS. LB/ACRE
(APRIL 1-MAY 15/SEPT 1-SEPT 30)
MULCH
FERTILIZER APPLY 4,000 LB/ACRE /ACRE STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT,
26-13-13 C~ 500 LB/ACRE NETTING, OR A MULCH STRAIGHT CAN BE USED 4ULCH ANCHORING TOOL. A DISK WITH BLADES SET NEARLY
USED AS A MULCH ANCHORING TOOL.
MULCH
APPLY 4,000 LB/ACRE STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT,
NETTING, OR A MULCH ANCHORING T00~. A DISK WITH BLADES SET NEARLY
STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL.
C GENERAL: - FERTILIZER RATES SHOWN ARE GENERAL RECOMMENDATIONS; FREQUENCY AND AMOUNT OF FERTILIZATION CAN BEST BE D - MAINTENANCE: BE DETERMINED THROUGH SITE SPECIFIC SOIL TESTING. C
SATISFACTORY STABILIZATION AND EROS?ON CONTROL REQUIRES A COMPLETE VEGETATIVE COVER. EVEN SMALL BREACHES ACHES IN VEGETATIVE COVER CAN EXPAND RAPIDLY AND, CAIN IS OFTEN SUFFICIENT TO GREATLY ENLARGE BARE
IF LEFT UNATTENDED, CAN ALLOW SERIOUS SOIL LOSS FROM AN OTHERWISE STABLE SURFACE. A SINGLE HEAVY RAIN IS SPOTS, AND THE LONGER REPAIRS ARE DELAYED, THE MORE COSTLY THEY BECOME. PROMPT ACTION WILL KEEP SEDIME SEDIMENT LOSS AND REPAIR COST DOWN. NEW
SEEDLINGS SHOULD BE INSPECTED FREQUENTLY AND MAINTENANCE PERFORMED AS NEEDED. IF RILLS AND GULLIES DEV AND MULCHED AS SOON AS POSSIBLE. DIVERSIONS MAY BE NEEDED UNTIL NEW PLANTS TAKE HOLD. :S DEVELOP, THEY MUST BE FILLED IN. RE-SEEDED,
MAINTENANCE REQUIREMENTS EXTEND BEYOND THE SEEDIN WEAK OR DAMAGED SPOTS MUST BE RELIMED, FERTILIZED, MULCHED, AND RESEEDED AS PROMPTLY AS POSSIBLE. RE PRODUCTIVE STANDS. SEE BELOW FOR LONG-TERM MAINTENANCE. SING PHASE.
LE. REFERTILIZATION MAY BE NEEDED TO MAINTAIN
LONG-TERM MAINTENANCE (WARM SEASON GRASSES)
VEGETATION ADAPTABLE TO OUTER BANKS
WARM SEASON GRASSES
FERTILIZER RECOMMENDATIONS: APPLY 10-10-10 AT RATES OF 25 Ibs/
1QQ0 s.f. IN EARLY SPRING (APRIL) AND LATE SUMMER (AUGUST) TO BUILD UP FOOD RESERVES AND INCREASE WINTER HARDINESS. APPLY NITROGEN AT RATES
OF 1-2 Ibs/1000 s.f. EVERY 4 TO 8 WEEKS DURING SUMMER. DO NOT APPLY
B LARGE AMOUNTS OF NITROGEN IN THE GROWING SEASON (EARLY FALL) SINCE THIS ENGINEER SEAL B
MAKES WARM SEASON GRASSES MORE SUSCEPTIBLE TO WINTER KILL. THESE ARE N
GENERAL RECOMMENDATIONS -SOIL TEST TO BE SURE IN FERTILIZING WARM- SEASON GRASSES.
~a SEAL 'D ,
24740 b
, .
, ~ ~ Fp ~ F ~ G 1 N E E ~ ~pJ , . I R I N Gr po C 0
P.O. BOX 466
KITTY HAWK, NO PROJECT NUMBER OFFICE: (2 NORTH CAROLINA 27949
ICE: [phone] AX: [phone]
052274 FAX: (2 e-mail: hou PROJECT CONTACTS: PROPOSED STORMWAT' COPYRIGHT O 2007 houseen gOearthlink. net
WATER MANAGEMENT PLAN FOR:
AMMOCK RESORT
THIS DOCUMENT IS TIC PROPERTY OF CEDAR HAM HOUSE ENGINEERING, P.C. AND MAY NOT APPROVALS DATE TRAVEL T BE USED MODIFIED OR ADAPTED WITHOUT DRAWN C. HOUSE 06-4-Q7
TRAILER PARK
TIC EXPRESS WRITTEN PERMISSION OF CHECKED
THE OWNER. COPIES MAY BE PRODUCED. R. HOUSE 06-4-d7 25671 NC ENGINEER R. HOUSE 06-4-07 WAVES-D SUBMITTED ~ NORTH NC12 HIGHWAY
:S-DARE COUNTY A
A tTH CAROLINA
K. t'IVUJt Uq-IF-U/
RE I E SIZE DRAWING NU ING NUMBER REV SHEET NO.
- - - APPLICABLE DRAWING TOLERANCES
L7R D 052274 CR DESCRIPTION DATE BY: 274SW - 3 OF
REVISIONS CAD FII.ENAME: 052274Sw W SCALE: AS NOTED 3
24 23 22 21 20 19 18 17

16 15 14 13 12 11 10 9
PRIOR TO Et CAL CAROL/NA 1-800-63 NOTE TH TO 0 EXCA VAT/ON
CALL
VA ONE CALL
-632-4949 F
F
NOTE.• THE DATA G1 Ml ON THIS PLAN /S BELIEVED
TO BE ACCURATE, B(JT TH£ ACCURACY 15 NOT
~ G I F T P ~ A C W CL 6' WIDE, 1'DEEP, 3:1 SLOPE ~ £ BOUNDARY SWALE ~ ~ GUARANTEED. CONTRACTORS ARE RESPONSIBLE FOR THE VER/FlCAT/ON OF ALL DIMENSIONS,
TYPES, AND LOCATIONS OF EX/ST/N6 UT/UT/ES
PR/OR TO EXCAVATION AND CONSTRUCTION. IF ANY DISCREPANCIES ARE F0fJN0, WORK SHALL
CEASE PENDING NOTIFICATION OF ENGINEER.
WORK MAY CONTINUE UPON NOT/C£ FROM ENGINEER.
DRAINAGE EASEMENT ACCESS EASEMENT DRAINAGE EASEMENT W J
3 N ~ O
o ~
DRAINAGE AREA 1 DRAINAGE AREA 2 o Im ° CLASS I AND II RIP-RAP~TYP
W
STRAW AND HEAVILY SEED 0 a
E ALL SWALE BANKS R Q Q44 ~ CL (E) ROADSIDE SWALE E
N91.0' 44 4
w c-~ 444
J
NOTE: 30.0' J Q 'ROPERTY TOPOGRAPHY ~ 4
~/l EXISTING PROPER INDICATES DRAINA DRAINAGE PATTERNS AWAY ~
2~ x''6.0' ~ 2~ FROM NC12 TOWA RE: PLAN 2 TOWARDS THE EAST 20 Q' 2' 6.O' ~ 2'
RE: PLAN RE: PLAN RE: PLAN RE: PLAN V = RE: PLAN VIEW 5-A
PLAN VIEW (BOTTOM OFLRI~P WRAP) ~P)
Y "/FT Y "/FT ,3. RIP-RAP OVERFLOW ELEVAT CLASS I AND II RIP-RAP~TYP ELEVATION = RE: PLAN VIEW 5-A
y4' AFT 3~
S~-~P ~ ` ~i~~/~ / ~ = ~~pF BOUND RY SWALE CL RE: CL (E) ROADSIDE SWALE RE: PLAN 5-A FOR EXISTING GRADE
~~j~ j~~ (MATCH EXISTING GRADE) BOTTOM CL OF 6' WIDE, 1' DEEP,
SHWT 1.5' (MIN) 3:1 SLOPE BOUNDARY SWALE
-
i
BOTTOM OF ALL SWALES ARE TO BE BOTTOM OF ALL SWALES ARE TO BE
D LINED WITH 4" MIN. OF CLEAN SAND OR DENSE VEGETATION~TYP PREPARED, GRADED LINED WITH 4" MINIMUM CLEAN SAND OR DENSE VEGETAl10N~TYP D
& COMPACTED SUBGRADES
SEE SPOT GRADES FOR ELEV BOTTOM OF ALL SWALES ARE TO BE SYNTHETIC FILTER FABRIC LINED WITH 4° MINIMUM CLEAN SAND PER 6.41 OF THE NORTH CAROLINA Iurva,
8" AGGREGATE BASE COURSE oR ~FNSE vFGFTA7~0N~TYP DEPARTMENT OF ENVIRONMENTAL^, 4L
' AIVU IVHIURHL ~CC,UURI,CJ CtCVJIVIV AND SEDIMENT CONTROL FIELD MANUA SECTION VIEW KWvrv MANUAL
SECTION 14-D
TYPICAL CROSS SECTION DETAIL 10-D
NOT TO SCALE RIP-RAP SWALE OUTLET
NOT TO SCALE
DRAfNAGE AREA 3 DRAINAGE AREA 3
80' DIAMETER EMERGENCY ~
TURNAROUND (GRAVEL)
2' SHOULDER RE: PLAN FOR (P) GRADES
C
C DRAINAGE EASEMENT ACCESS EASEMENT DRAINAGE EASEMENT WETL NDS XGRADE Y4~~ FT Y4~~ FT
DRAINAGE AREA 1 DRAINAGE AREA 2 ~ r ~ ~ I I- PREPARED, GRADED I I , II - ' ~ ' ~11 ffil ~~l
& COMPACTED SUBGRADES
IN AUTHORIZED AREAS ONLY
STRAW AND HEAVILY SEED 0 Q 8" AGGREGATE BASE COURSE
ALL SWALE BANKS
N91.0' ° SECTION 10-C
W
J J 30.0' Q EMERGENCY TURNAROUND GRADING DETAIL
NOTE: ~ EXISTING PROPER INDICATES DRAINA PROPERTY TOPOGRAPHY NOT TO SCALE
DRAINAGE PATTERNS AWAY ~
2' C~6. o~ 2' FROM NC12 TOWA RE: PLAN 2 TOWARDS THE EAST 2 ~ Q' 2 ~ 6.O ~ 2 ~
RE: PLAN RE: PLAN RE: PLAN RE: PLAN
B y4' AFT Y"/FT Y»/FT 3: ENGINEER SEAL B
/j\~j ~ ~ ~ S~OpE BOUND RY SWALE
~ (MATCH EXISTING GRADE) • ~
SHWT 1.5' (MIN) a y
Q--- _ ~ 15"W PIPE CULVERT ~ SEAL ~ ° 24740 ~Q'~
IN WAY OF SEPTIC INSTALLATION. )N.
INLET/OUTLET PROTECTION TO
CONFORM TO SECTION 6.41 OF THE NORTH CAROLINA BOTTOM OF ALL SWALES ARE TO 8E / o P.O. ~~O~R ,CK~ ,A I R I N Gr PO Co P.O. BOX 466
DEPARTMENT OF ENVIRONMENTAL AL PREPARED, GRADED LINED WITH 4" MINIMUM CLEAN SAND OR DENSE VEGETATION~TYP KITTY HAWK, N PROJECT NUMBER 052274 OFFICE: lK, NORTH CAROLINA 27949
AND NATURAL RESOURCES EROSION AND SEDIMENT CONTROL FIELD ~sioN & COMPACTED SUBGRADES -FICE: [phone]
MANU AL~TYP FAX: e-mail: ho PROJ GC~Y ~~CONTACTS: PROPOSED STORMWA COPYRIGHT O 2007 FAX: [phone] il: houseeng0earthlink.net
8" AGGREGATE BASE COURSE
NWATER MANAGEMENT PLAN FOR:
THIS DOCUMENT IS THE PROPERTY OF CEDAR HAl HOUSE ENGINEERING, P.C. AND MAY NOT APPROVALS DATE TRAVEL BE USED MODIFIED OR ADAPTED WITHOUT DRAWN C. HOUSE 06-4-07 IAMMOCK RESORT
SECTION 14-B ..L TRAILER PARK
TYPICAL CROSS SECTION WITH PIPE CULVERTS TIC OWNER. COwP S MAY BPRODUC~ED. CHECKED R. HOUSE 06-4-07 25671 N ENGINEER R. HOUSE 06-4-07 wA`J~- ci iRUrrr~n NnRT 'l NC12 HIGHWAY
NOT TO SCALE "ES-DARE COUNTY A
A IR TH f A R OTA
Alb. R. HOUSE 06-4-07 " "y + ` P, i _ i i i ai _ \r Ab-ow \ L a
RECIEVED SIZE DRAWING - - - - APPLICABLE DRAWING TOLERANCES
vVING NUMBER REV SHEET NO.
LTR LTR DESCRIPTION DATE BY: D 0522 REVISIONS CAD FII.ENAME: 052274Sw 6?w1274SW 2 OF
tsw SCALE: AS NOTED 3
16 15 14 13 12 11 10 9

8 7 6 5 4 3 2
CFA ISLE IQl ~t LEGEND
SITE
?6.0~ -EXISTING SPOT GRADE RADE PRIOR TO EJ GRADE CAL ' OF BANK TO TOP OF BANK CAROL/NA ~ 1-800- 63 VG O EXCA VA TION
CONCRETE MONUMENT SET INFILTRAl10N BASIN OPE NT SET TO 5.1' PER SIN OPERATION AND 6.0 -PROPOSED SPOT GRADE CALL
lAllfil@16 GW. IN MAINTENANCE =NANCE AGREEMENT
6' BOUNDARY SWALES ~ . O' - SWALE AREA TOP OF BA LAN VIEW 5-A) VA ONE CALL
~ ~ ~A ~ VI~VES~ NC (RE: PLAN VIE F ~ ~ (RE: PLAN VIE 3.8 - Q
3-~ S~PE LAN VIEW 5-A) -GRAVEL ROADWAY 1-6J2-4949
i
1.5' ~ i ~ - CONCRETE PARKING
(MIN.) ~ 1sf j NOT£. l~ \ TH TO NOTE:
L_ -------~----J ~ - WETLANDS AREA THE DA TA ~Ap EN ON THIS PLAN IS BELIEVED TO BE ACCyfTE, BUT THE ACCURACY IS NOT
S Y14.E DES v GU \TfF~f'~ \YY 5' VEGETATED BUFFER O~~ \y~0 GUARANTEED. UNTRACTORS ARE RESPONSIBLE'
T ~ SRLVO, NC \FOR THE VERIFIG~4 TION OF ALL DIMENSIONS, YYPES, AND LOCA CANS OF EXISTING UTILITIES
SECTION 6-F -RIP-RAP ftOR TO EXCA VA AND CONSTRUCTION. IF AN D/SCREPANC/ES ARE FOUND, WORK SHALL
JW ` ~ b 9 CE ENCING CEA PENDING NOT/F T/ON OF ENGINEER.
STORMWATER RETENTION CROSS SECTION ~ - STORMWATER FLOW K A Y CONTINUE U N NOTICE FROM
~~CATI~N SKETCH, NUT TD SCALE NORTH AND SOUTH BOUNDARY SWALES - (P) 6' OPAQUE FENCING
NOT TO SCALE - - -CENTER LINE OF (P) SW - - - - - - -TOP OF SWALE BANK (P) SWALE (P) 6' OPAQUE FENCING /
GENERAL NOTES AN K 4.47 ^ s
1. OWNER/DEVELOPER: ASA H. GRAY, III - PROPERTY BOUNDARY DARY ~ - . ~ ~
P.O. BOX 135 RODANTHE, NC 27968 ...::::::::E:... -BOUNDARY BETWEEN DR DRAINAGE AREA 2 ALSO RUNS ALONG HIGH OF EACH LOT 'EEN DRAINAGE AREAS ~ / ~^~W ` l JG HIGHEST ELEVAl10N 250' ,%'~OS° W~ ~ , `s~~,
2. PLAN BASED ON SURVEY INFORMATION PROVIDED 8Y FREDDY D. RANKIN, P.LS, ENTITLED, (P) 08SERVATION DECK (200 SF MAX.) PER ACOE ~ ~ p' ~ ~ y y
°SURVEY/PRELIMINARY SITE PLAN FOR ASA H. GRAY III-25671 NC 12 HIGHWAY - WETLANDS BOUNDARY DARY (P) 4' WIDE WALKWAY : `~'PF'~p,G~ ~ ~~?°1''` ~ ~ _ ~ (ELEVATED A MINIMUM 4.44 ~ - - O~p~ ^~1~ W ~ . \Y OF 3' ABOVE SUBSTRATE) i!" W ` ~ ` . L P~~P. W . ° ~ W " ~ '4.661 <up
-WAVES-KINNAKEET TOWNSHIP-DARE COUNTY-NORTH CAROLINA," DATED 1-25-05.
3. STORMWATER MANAGEMENT PLAN DEVELOPED IN ACCORDANCE WITH NORTH CAROLINA FOR -EDGE OF ROADWAY %i.. W W. W ` W W _W` , //Y~n
E ADMINISTRATIVE CODE/NCDENR-ENVIRONMENTAL MANAGEMENT COMMISSION STORMWATER MANAGEMENT DOCUMENT T15A:02H.1000. COR -CENTERLINE OF ROADWA TOS -TOP OF SWALE 'OADWAY ~r ~~~WW .W. 5' VEGETATED ~ - - - W
BUFFER LIMIT 4.41 ~ ? W ° W W ~ W ~ W ~ W W > ~ ~ y 5.16 qJ' W ~ Q
4. PROJECT IS DESIGNATED AS "HIGH DENSITY PROJECT" AND IS DEVELOPED IN ACCORDANCE WITH DEFINITION FROM REFERENCE (NOTE 3) SECTION 15A NCAC 02H.1003 SUBSECTION (1) AND RULES .1005 THROUGH .1007. BOS -BOTTOM OF SWALE ~ W .E 4.8 OR .W~'.W.".' .`~`.~"."W" ~W~ W `
WETLANDS AREA ~ " ` . . ` " i ° .4.63' ` ,,y' r \
5. SWALES DESIGNED PER REFERENCE (NOTE 3) SEC110N 15A NCAC 02H .1008. ACOE -ARMY CORP OF ENGINEE (P) -PROPOSED :NGINEERS (NORTHWEST BORDER) 5 9~ 10 i~ s~ W ~ W W ~ ~ , ~ , W W ~ + ~ W ` ~ W~,~ W ~ W ~ W W: 5' VEGETATED BUFFER
6. AN OPERATION AND MAINTENANCE PLAN HAS BEEN PROVIDED AND SIGNED BY ASA H. ,W -
GRAY III PER REFERENCE (NOTE 3) SECTION 15 NCAC 02H.1003 SUBSECTION (g). 15°0 HDPE EQUALIZATION 4.35 W ~ J ~ y ° ~ W W ° ~ • W ~ • W + PIPE CULVERT ~~p,•~ ~ ~ . W W . W,l~ % ~O N 13 5.8 OS ~p~~~~~ 4.71_ W~~W;WW~-:~~y~~''`~~ N 13038'20" E 10.00'
7. DARE COUNTY HEALTH DEPARTMENT REQUIRES FILL ON ALL LOTS TO MEET SEPARAl10N
REQUIREMENTS FROM WATER TABLE. 4.8 OS O ~k, G~ ~O y y~'W ,s~ ~ W .e~4~ PER 2ACOE .02 (P) 6 _ (P) 6' OPAQUE FENCING
g DARE COUNTY ZONING REQUIRES NO MORE THAN 60% IMPERVIOUS COVERAGE ON THIS
TRAVEL TRAILER DEVELOPMENT FOR S-1 ZONING AS REFERENCED AND IN ACCORDANCE 15"0 HDPE PIPE CULVERT~TYP /J- ~ ~P~~O . ' a'1
WITH THE "MOBILE HOME & TRAVEL TRAILER PARK ORDINANCE FOR UNINCORPORATED 4.8 ~ ~5. S • ~ ~ .
DARE COUNTY, NORTH CAROLINA" 5.8 OS ~,P~P • 4'$ ~R 5' VEGETATED
9. FILL ON LOTS IS TYPICAL. 4.8 OS ~D~ ~~ep~~' , + G BUFFER LIMIT
10. BOUNDARY SWALES ARE TYPICAL (SEE CROSS SECTIONS, SHEET 2.) AND ARE DESIGNED 5.8 OS ~ ~ WETLANDS AREA
TO ROUTE STORMWATER FROM IMPERVIOUS AREAS TO INFILTRAl10N SWALE SYSTEM. / ~ ' ; 1 3 P~~P 1 ~ ~ ~ (SOUTHEAST BORDER)
11. STORMWATER SYSTEM AS DESIGNED IN THIS PLAN WI N T CAUSE OF'F-SITE RUNOFF TO INCREASE. 5.18 4.8 OR ~ O~ f:,~~ N 77'40'30" E 10.00'
12. A SEPARATE TOPO MAP IS NOT PROVIDED. SPOT GRADES BASED ON SURVEY ENTITLED,"
°SURVEY/PRELIMINARY SITE PLAN FOR ASA H. GRAY III-25671 NC 12 ~f~F :t ~ 5.8 OR 5.8 OS
HIGHWAY-WAVES-KINNAKEET TOWNSHIP-DARE COUNTY-NORTH CAROLINA," DATED 4.8 OS ~ . ~ ~9 / i 6.0 OR
1-25-05 BY FREDDY D. RANKIN, P.L.S., AND HAVE BEEN PROVIDED IN LIEU OF TOPOGRAPHY. LOTS ARE TO BE FILLED TYPICALLY AS SHOWN BY PROPOSED SPOT 5.8 OS ~ ' ~ 5.12' 6.2 OR
GRADES SHOWN ON PLAN AND CROSS SECTION 14-B AND 14-D. STRAW AND HEAVIL SEED ALL SWALE BAN 5.8' ~ i OS HEAVILY ~ , / ~ 4.8 OS
LOT COVERAGE .E BANKS ~ 4.\ ' O /
DARE COUNTY. NC REGULATION FOR S-1 ZONING (60% MAX.. COVERAGE
5.8 OS 3 OS %y ° , Q i
(EXISTING} HOUSE/(EXISTING) WALKWAY (BRICK) = 998.1 SF 4.8 0 5.8
(PROPOSED) BATH HOUSE AND WALKWAY = 618.0 SF 5.8 OS Q
(PROPOSED) 10'x20' DUMPSTER PAD (CONC.) = 200.0 SF
(PROPOSED) DRIVEWAY (GRAVEL) = 27,220.4 SF Q 4. ~F. . ' i 4.8 OS
Q~~ (P) BATH HOUSE 4 92, . -Tj . ~ O ~ ,.rte - 6.4 OR 5.8 OS
(PROPOSED) AvERaGE 10'x35' TRnILER AND VEHICLE SPACE 7700.0 SF 22 ~ 350 SF ~~t`~~~~ TOS ~ ~ ~ Qos~ `G i 6.2 OR
TOTAL EXISTING AND PROPOSED COVERAGE = 36,736.5 SF ~0 ~ BOS O Q o i. 4.84
LOT AREA (PER REF) = 120,232.8 SF 6.0 OR 4. i
% LOT COVERAGE = 36.736.5 SF = 30.5% ~Q~~''~~ `fib ~ 5.8 OS
120,232.8 SF ~ - ~ 4.8 OS
AREA OF WETLANDS TO BE FILLED 4356 SF (1 f 10 OF AN ACRE)) ~~~Q~~~~2QQv~ 5.4 .9 ~ ~pQ 5.8 OS .9 5.8 OS ~:,i
(P} EMERGENCY TURN AROUND IN WETLANDS (PER AUTOCAD) = 4169.6 SF 4.8 OS ~1~ 9'~ O f
5.8 OS~'~ i _.i
TOTAL PROPOSED COVERAGE (WETLANDS AREA) = 4169.6 SF
STORMWATER RUN-OFF CALCULATION (DR/UNAGE AREA 1) x (1.0" RUNOFF) = RUNOfF VOLUME REQUIRED / D~ j .61' S.8 OS
C (DRAIWIGE AREA 2) x (1.0" RUNOfF) = RUNOfF VOLUME REQUIRED S O ~ - 4.8 OS
(DRNNA~E AREA 3) x (1.0" RUNOFF) =RUNOFF WLUME REQUIRED 4.60' ~ • - i 5.8 OS
DRAIWIGE AREA 1 = 9.516.1 SF (IMPERVIOUS AREA) 5.8 OS ~ O P~ ~P ' JUN G f 1
DRIUNAGE AREA 2 = 21,190.9 SF (IMPERVIOUS AREA) 4.8 OS P~ ~
DRAINAGE AREA 3 = 36,736.5 SF (TOTAL LOT IMPERVIOUS AREA) 5.8 0 ~ P~ P ~ Pia ~ ~ 1 4.89'
9516.1 x (.083') = 789.8 CF (ST4W?~E REWIRED DRAINAGE AREA 1) 21,190.9 SF x (.083') = 1758.8 CF (STORAiGE REQUIRED DRAINAGE AREA 2) O 5 f O ~ 5.8 OS
36,736.5 SF x (.083') =3049.1 CF (TOTAL LOT STORAGE REQUIRED DRAINAGE AREA 3)
STORMWATER RETENTION CALCULATION (SEE CROSS SECTIONS AND ~p~ Q _ 6.4 OR 5.8 OS
CO BASIN I: SWALE STORMWATER REfENTiON VOLUME DETAILS, SHEET 1 AND 2) ~ OF (P) 6' CULVERT / ` -
6' WIDE, 1' DP, 3/1 SLOPE SWAIE AND 5' VEGETATED r ~ 6.2 ~R BUFFER LIMIT O gg' 6.0 OR
(NORTH BOUNDARY SWALE UP TO WETLANDS LINE) 1/2(b)(h) x L =VOLUME //mss , ~ 5.8 OS o ENGINEE SEAL
1/2(6')(1') x (525.7 LF) = 1577.1 CF 5.2 '~F9ti~ O ~ ~ " -J 4.8 OS ~ JUN 1'9 2007
-STORAGE IN 15"~ HDPE PIPE CULVERTS (FLOWWG FULL) o
(PIPE AREA) x L =VOLUME ~`~`~~~'.~~~OA 5.8 OS 5~ VEGETATED BUFFER ~ ~ ~ tgwTy ~e~i1O~N~
1.2sf x (421.4 LF) = 517.1 CF = 2094.2 CF ' ~ ~ (E) BORROW PR M~ Mk1LN~~
AREA II: SWALE STORMWATER RETENTION VOLUME
6' WIDE, 1' DP, 3/1 SLOPE SWALE * 2094.2 CF OF STORAGE (AREA I} > 789.8 CF 15~~ HDPE PI (SOUTH BOUNDARY SWALE UP TO WETLANDS LINE) IDPE PIPE CULVERT~TYP y4~
1/2(b)(h) x L =VOLUME 15 ~ HDPE EQUALIZATION 5.8 O ~ ~ ~ 5.8 OS ,p
1/2(6~)(1~) x (1056.1 LF) = 3168.3 CF PIPE CULVERT 4.8 5.8 OS ~ ' '~`~'y'q~~ i ~ 4.8 OS 4.8 OS ~'~z~ ~/W~ . 56' 5.8 OS
R ~V
B * 3168.3 CF OF STORAGE (AREA II) > 1758.3 CF 5. 5.8 OS 4. ~ ~c.~ , ~Op' ~ _ j .27~ STRAW AND HEAVILY 100'~TYP ~ j~ ~ ~OF' ~ ~ .66~ SEED ALL SWALE BANKS D
i ~Q ~~1 ~ . .o` • ¦
RUN-OFF VELOCITY AT RIP RAP/OUTLETS (SEE PLAN VIEW 5-A AND DETAIL 14-B&D, SHEET 2) j 1. VELOCITY (v) IS GIVEN BY CHEZY-MANNING FORMULA s Qps~ `c~`P~ ~ 5.8 OS
SO THAT FLOW OVER RIP RAP CAN BE FACTORED IN: ~(P) DUMPSTER PAD ~ ~ "'y~'~ -1-1-1 i4q=214t
DETERMINED BY THE FOLLOWING: ~~rJ2~ ~ 7 / ~ 5.8 ~S SEn~ : ? =p
v=1~ ~~N)~ dJ ~y • ~ . 24740
n 87 WHERE (n) =MANNING ROUGHNESS CONSTANT ,I e~/ , Q Q 0 c.~Q O ~ ~ OF (P) 6~ SWALE
(r) =HYDRAULIC RADIUS = (A/p) ~ s ~ ~ ~ ~ 2~Z,~ 5' VEGETATED ~ ; \~2~~ P`L = B R LIMIT OF,R
AND (S) =SLOPE ~ ~ 6.0 I E.R I N Gr Po I* P.O. BOX 466
2. VELOCITY (V) AT RIP RAP OUTLETS FLOWING TO BOUNDARY SWALES ~ \ 2 ~ `p~S~ 6 J 6.3`x' ~ pG ~ 0 KITTY HAWK, NO PROJECT NUMBER 052274 OFFICE: ( FAX: ( e-mail: hou P~ROJ GC~Y IICONTACTS: PROPOSED STO NORTH CAROLINA 27949
ON NORTH SIDE OF PROPERTY- , y ~ ~ ~ e, y 4 a . ~P~~ i / ~ 5 6~~ 'ICE: [phone]
DETERMINED BY THE FOLLOWING: ~ \ ~ g g b~ ~j 5~ VEGETATE~BUFFER 'AX: [phone] houseengOearthlink. net
WHERE (n) _ .017 MANNING ROUGHNESS CONSTANT ~ FOR RIP-RAP ~ ~ \ a b'~ 'o 'o / ~
(r) =HYDRAULIC RADIUS = (A/p) = 3.0 sf/12.32 = 24 \ \ .9< AID (S) =SLOPE _ .002 ~ ~ ~ ~ 4WATER MANAGEMENT PLAN FOR:
2~ 4.35' ~ ~ 5. os ~~5~~~' PLAN VIEW 5-A coPnu~x~r o Zom CEDAR HAM
v=1.49 (.24) ~02 = t .07 f/s ~ ~ ~ 6.8 - ~ PROPOS D STORMWATER MANAGEMENT PLAN THIS DOCUMENT IS TIC PROPERTY OF AMMOCK RESORT
SOILTYPE/INFILTRATION RATE/DRAWDOWN ? ~a 1 ~ 6 5. 8 ~ V~~~~~ S~QQ~y ~ 1 "=50' HOUSE ENGINEERING, P.C. AND MAY NOT APPROVALS DATE TRAVEL T BE USED MODIFIED OR ADAPTED WITHOUT DRAWN C. HOUSE 06-4-07 L TRAILER PARK
THE EXPRESS WRITTEN PERMISSION OF CHECKED
SOIL TYPE & INFILTRATION RATES: y 6.2 SOIL IS LISTED AS A COROLLA/DUCKSTON AND NEWHAN/COROLLA COMPLEX SERIES SOIL 4. 0 Q ' TIC OWNER. COPIES MAY BE PRODUCID. R. HOUSE 06-4-07 25671 NC ENGINEER R. HOUSE 06-4-07 WAVES-D ci iR?~m~-n _ _ _ _ _ _ _ _ _ _ N(lR TN NC12 HIGHWAY
A IN THE USDA, SOIL CONSERVATION SERVICES "SOIL SURVEY OF DARE COUNTY, NORTH T'~ ~ CAROLINA". REPORTED INFILTRATION RATES FOR THIS SOIL ARE IN EXCESS OF 20"/hr ~6 5 R n .0 OR \ ~~Q~~~~Q / ;S-DARE COUNTY A
zTH CAPOT TKA
AND WILL MEET THE MINIMUM HYDRAULIC CONDUCTIVITY REQUIREMENT OF 0.52"/hr. \ ~O THE SEASONAL HIGH WATER TABLE AS PER SOILS REPORT IS 3.8'. 5.8 OS v %.F %-r V ""....."&f H. HOUSE 06-4-07 ~ • 1 11 i i i JLZ t ?r/ ir4.i.i. \ L i
~,,K~os \ \ .11*0 1 8~'fOS RELIEVED
SIZE DRAWING NI - - - APPLICABLE DRAWING TOLERANCES I NG NUMBER REV SHEET NO.
INFILTRATION BASINS WITH 1.0' OF STORAGE AND WETLANDS AREA AS SHOWN ON THIS DRAWING WILL PROVIDE STORAGE IN EXCESS OF 1.0" OVER IMPERVIOUS COVERAGE AT THE
SITE. THIS IS A CONSERVATIVE ESTIMATE, ACTUAL STORAGE WILL BE HIGHER SINCE ~ ~ LTR TR DESCRIPTION DATE BY: D 05227 REVISIONS CAD FILENAME: 052274sw 274SW OF
CALCULATIONS ARE BASED ONLY ON STORAGE IN THE BASINS AND DO NOT INCLUDE THE EFFECT OF THE HIGH INFILTRATION RATES OF THE SOILS PRESENT IN THE BASIN AREA. W SCALE: AS NOTED 3
8 7 6 5 4 3 2