SW8020715_COMPLIANCE_20100223

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
�PERMITNO. I SW Q62'1l aU Z1r
DOC TYPE El CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
JMPLIANCE EVALUATION INSPECTION
DOC DATE-
YYYYMMDD

State Stormwater Inspection Report
general
Project Name:
)
J'
Permit No: SW Do.207l6-
4� li
T'xpiration Date:sr,
Contact Person:
Phone Number: ��t
Inspection Type:
Inspection Date: � 3b
Time In: [ '. $ O
Time Out: ! `
Current Weather: a.� V �
Recent Rain (Date)?
Rain — in
v 4 17
Location v
Facility Address I Location: � DV ! I 6 ` ?
City:, Zip: �,lyccj$' County: Lai: "N Long: - "VJ
Permit Information
�`�
Rule Subject to (circle one): 1988 Coastal Rule
S Coastal Rut
2008 Coastal Session Law 2006-246
Goose Creek
High Quality Waters
Outstanding Resource Waters
Density (circle one): -sigh (HD Low (LD)
Stormwater Best Marta
-tent practices (BMPs) (insert
number of each):
Wet Ponds
Infiltration Basins
Infiltration Trenches
LD Swales Stormwater Wetlands
Dry Ponds
Bioretention
Permeable Pavement
Sand filters (circle one) Open Closed
Cistem
Level Spreader/Filter Strip
Other (specify):
File Review
Yes _ No NIA NIE
1. Is tite permit active?
2. Signed Engineer's Certification on file? 0
3. Signed Operation and Maintenance agreement on file?
4. Recorded Deed Restrictions on file?
Site Visit, Built tlnon Area (RUA1 Yes. No NIA NIE
5.
6.
BUA is constructed and consistent with the ermit requirements?5`
BUA as permitted is graded such that the runoff drains to the system? (high densit onl
T
7.
Drainage area is consistent with ernut? i,e. no mi -serniitted drainage to the SW BMPs
8.
Drainage area is stabilized? to reduce risk of sedimentation to the SW BMPs
T
Site Visit: Stormwater BMPs Yes. No NIA NIE
9. Stormwater BMPs are located per the approvedplans?
10. Stormwater BMPs have dimensions e . length, width, area matc ng the approvedplans?
11, Stormwater BMPs are constnicted per the approvedplans? AYE
L
Site Visit: Oneration and Maintenance Yes, No NIA N/E
12. Access points to the site are clear and well maintained?
13. Trash has been removed as needed?
14. Excessive landscape debris (glass ch_ppinps, leaves, etc is controlled?
15. Stormwater BMPs being operated and maintained as per the permit requirements?
_
16. Inspection and Maintenance records are available for inspection? (high density only, 1995 — prfsent
Site Visit: Other Permit Conditions Yes No NIA NIE
17. is the site compliant with other conditions of thepermit? V I
—1 - Site Visit: Other Water Quality Issues Ye No NIA NIE
18. Is the site compliant with other water quality issues as noted during the inspection? I
State Stormwater Inspection Report, Version 3.0 Page i of 2

State Stormwatejr Inspection Report
Inspection Pictures (some of the pictures taken during the site
Compliance Status ❑ Compliant Non -Compliant
Letter Sent (circle one) es No Letter type: CEI NOV NOVRE Other
Date Sent: .J ;z Reference Number:
r
Inspector Name and Signature: Date: 7J
State Stormwater lnspection Report, Veision 3.0 ' Page 2 of 2

INFILTRATION BASIN: O & M Inspection Report
and Pretreatment -
'r•
_Inlets
1.
Drainage area is managed to reduce the sediment load to the basin:
0
❑
❑
❑
2.
Bypass structure / Vegetated filter is free of erosion and obstructions:
❑
❑
❑
2'
3.
Inlet device is free of erosion, damage or clogs:
Y
❑
❑
❑
4.
Pretreatment area free of excessive sediment:
❑
❑
❑
5.
Pretreatment area is free of erosion:
❑
❑
❑
6.
Rip rap (if used) is in correctly placed:
❑
❑
❑
,Perimeter `� .,,. ..
_ .
7.
Perimeter of the infiltration basin is free of bare soil or erosion:
❑
❑
❑
8.
Vegetation around the basin is maintained at N6 inches height:
❑
❑
❑
9.
Slopes and bottom are free of erosion and woody vegetation (trees or shrubs):
❑
❑
❑
Main Treatment Area'
10.
Main treatment area is free of weeds:
❑
❑
❑
11.
Vegetation in the basin is maintained at N6 inches height:
❑
❑
❑
12,
Main treatment area is free of excessive sediment:
❑
❑
❑
13.
Main treatment surface area is free of clogs:
❑
❑
❑
14.
Basin is drained and it has been more than 5 days since last rain:
❑
❑
❑
Outlet Device
15.
Outlet device is free of erosion, clogs or damage:
❑
❑
❑
16.
Orifice size matches approved plans:
❑
❑
❑
17.
Relative elevations match approved plans:
❑
El18.
Outlet device draining properly — (free of standing water, ttails, etc.):
❑
❑
❑
V3.3_09

.5-Wr0a 0-7 /5-AfOLI)
STORMWATER SUBMITTAL REQUIREMENTS
INFILTRATIONIEXFILTRATION SYSTEMS
Basins and Trench
I. Objective
A. Collect all runoff from all BUA (proposed and/or existing and/or offsite) as the case maybe, by
any means including piping or swales, and direct it to the infiltration system.
B. Check the proposed basin/ trench design to make sure it meets or exceeds the minimum
design criteria for design storm, volume and drawdown.
II. What mattes up a complete infiltration basin / trench application package?
A. /,TwAo sets of sealed, signed & dated layout & grading plans with appropriate details.B. Completed application (SWU-101) with supplement(s), SW-401-Infiltration Basin, SW-401-
F
ration Trench, SW-401-Level Spreader, and inspection and maintenance agreements.
C.1�d restriction document, if applicable. (subdivisions & projects with out parcels)
D. ed, signed & dated calculations.
E. A soils report containing information in regard to the soil type, boring locations, seasonal high
water table elevation and expected infiltration rate.
III. BIMS entry (for DWQ use only)
Enter & track application acknowledged date, review date, add info requested/received dates, permit
, issue dates, and drainage area and stream/waterbody info. Best done after the add info letter is
f/ written and before sending permit up for signature.
IV. Shell documents (for DWQ use only)
Permit shells: s:lwqslstormwaterlshelllshighcominbasin
S:lwqslstorrnwaterlshellslhighcomintrench
s:lwgslstormwaterlshellslhighsubinbasin
s:lwgslstormwaterlshellslhighsubintrench
Calculations: s:lwgslstormwaterlexcel spread sheetslinbasin
s:lwgslstormwaterlexcel spreadsheetslintrench
V. Review Procedure- look for consistency between the various elements of the package- application,
plan and calculations.
A. APPOCATION
1. ✓✓Original signatures are required. Photocopied signatures cannot be accepted.
2. VIP, completed infiltration basin or infiltration trench supplement, one for each proposed
system. A signed, dated and notarized Inspection and Maintenance Agreement for
each proposed system with an original signature..
3. The elevations, areas and volumes reported on the supplement match up to the
4. �umbers used in the calculations and shown on the plan details.
uilt-upon areas are reported in square feet in Section 111.9.
5. ,/F3 ecelving stream name and classification.
6. VSe tion III. is filled in -cannot be left blank. One column must be filled in for each
posed iAltration basin or trench.
7. f the applicant is a corporation, partnership or LLC, look it up on the Secretary of State
Corporations Database. Make sure corporation is spelled correctly (capitalization and
punctuation matter) and that the person signing the application is at least a vice-
president in the corporation, a General Partner in the partnership, a member in a
member -managed LLC, or the manager of a manager -managed LLC. Need
documentation to support if the Articles of Incorporation do not list the members or
managers of the LLC. if an agent signs, then a letter of authorization is needed from the
8.WIApresident, vice president, general partner, member or manager.
A"or subdivided projects, a signed and notarized deed restriction statement must be
9. Jprovided.
Soils report with the SHWT, Soil type and expected infiltration rate.
Page 7 of 12

Infiltration Basin & Trench, cant.
B. CAL LATIONS
1. The basin or trench must draw down within 5 days. Spray irrigation is not acceptable as
the sole means of drawdown.
2. For sites with high infiltration rates, the maximum infiltration rate to use for the design
�is10 in/hr, per Vincent Lewis.
3. /The design storm is 1.5" if the project is subject to Phase II oris sited within'/2 mile of
and draining to SA waters. Otherwise, use 1" design storm.
4. For Phase II projects that are within '/z mile of and draining to SR waters, the difference
I� in runoff from the predevelopment and post -development conditions for the 1 year 24
VO, •d hour storm must be controlled and treated.
5. ,Report the bottom surface area.
6. eport the surface area at the overflow elevation.
7. how the calculation for the minimum required volume.
8, ,Provide a table of elevations, areas, incremental volumes and accumulated volumes to
monstrate that the minimum required volume has been provided.
9. Calculations are signed, sealed & dated.
10. t-Report the Drainage Area and Built -upon area for each basin or trench.
11. The seasonal high water table must beat least 24" below the proposed bottom elevation
Fthe system. For Phase 11 projects, at least 12" of this must be in naturally occurring
oils.
12. All runoff in excess of the design storm must bypass to a vegetated filter prior to entering
,,.Jhe basin or trench. If the system is designed to store a larger design storm (generally 2-
3 times the minimum), the requirement for an offline bypass can be waived. Please
contact the Division to determine what design storm is appropriate for the project.
S:1WQSISTORMWATERIFORMSICHECKLIST
Page 8 of 12

Infiltration Basin & Trench, cont.
C. PLANS - Plan sheets should be kept to a minimum. For small commercial single basin
projects, the plan set could consist of only 2 or 3 sheets, layout, grading and details. For larger
projects, show as much information as possible on as few sheets as possible, without
clutte g, them up.
1. evelopment/Project Name
�ngineer name and firm.
3 gend —
4. lorth Arrow
5. Location Map with nearest intersection of two major roads shown. Major road is any 1, 2,
µ. ° �cB r �r 3 digit NC, US or interstate highway.
16. Scale- standard engineering scale, no off-the-wall stuff.
pe 7. ,/bate v �� i s �G'� d�- /aX
8. - Revision number and date, if applicable. —
9. Ori ' I contours, proposed contour , p t elev tions #in fl r elevations pipe
MCZ�g
wale inverts, etc. ,«+- �,
10.drainage(piping, swales, ches, ponds, t� c. , ncludin off -site. Include a ma
g p ) g p
delineating the offsite drainage areas
1P operty/Project boundary lines, bring & distances
12. can High Water Line or Normal Hig a er ine, if applicable.
1 V/6Drainage easement locations shown on the plans along with their width.
1�4. Wetlands delineated, or a note on the plans that none exist. Provide a copy of the
etlands delineation map signed by the Corps of Engineers, or contact the appropriate
field rep for the Corps to see if they can email a statement regarding the status of the
d lineation. Infiltration systems may not be located in wetlands.
15. etails for the roads, parking, cul-de-sacs, including sidewalk width, radii, dimensions &
slopes.
16. Apartment 1 Condo development- provide a typical building footprint with dimensions,
!)rand note all concrete and wood deck areas.
17. T,hd drainage area for each basin or trench is clearly delineated and numbered to match
V-fjp to the calculations and supplement. Drainage area delineation is best done as a
separate plan sheet.
18 A basin section detail showing bottom and storage elevations, 3:1 side slopes. The side
e slopes of an infiltration basin are not restricted to vegetation. They may be hardened
' with rock, timber, concrete, decorative brick, etc.
19. A trench section detail with the perforated pipe diameter, filter fabric wrapped around the
pipe and around the trench, trench height and width, rock fill type.
2Y.4A
If using a pre-fab chamber structure, provide details of the chamber, including model #,
length, width, chamber volume and number of chambers P sed.2 bypass structure detail is provided showing awith ' square openings,
and the necessary bypass weir or pipe elevatio SeveTWlypes of bypass structure
designs are acceptable.
1. Dimensions for each line and arc formed by the bottom contour of an infiltration basin.
,4)23. II runoff in excess of the design storm must pass through a vegetated filter prior to
✓ being discharged into the receiving stream. The filter must be 50' long for SA waters and
r� �f ,30' long for non -SA waters.
24. ✓All infiltration systems must be located at least 50' from the MHW line of surface waters.
�f4,5 Vegetation is specified for basin slopes not being hardened. Weeping Love Grass is not
uitable as a permanent vegetated cover for side slopes.
26.
r 11 roof drainage must be directed to the system. Show the roof drain collection piping
WgWj n the plans. This is especially necessary for projects where the buildings back up the
property lines where roof drainage may leave the site prior to going through the system.
27J/AMonitoring wells may be required on a case -by -case basis.
Page 9 of 12

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So 8-
DIVISION OF WATER QUALITY
INFILTRATION SYSTEM INVESTIGATION
1
Scheduled Site Visit Date and Time I � !9 I6 1 IC&I
Project Name: Ocean, Isle Beach Boat Access County: Brunswick
Street Address: Causeway Drive, Ocean Isle Beach
Directions from the nearest intersection of two major roads: Approximately 1/3
mile north of Causeway Drive (NC 904) and East 3rd Street — east side of bridge
>1 acre being disturbed? YES NO
Consultant Name: Paul Masten
Consultant Firm Name: S&ME
CAMA Major required? YES NO
Phone: [phone]
Bore Number
3
4
5
6
7
a Existing Ground Elevation
b Proposed Bottom Elevation
c Subtract a — b
d Add 2 ft. Min. Bore Depth)
e Soil Type
Infiltration Rate OK?
Actual Elev. Of SHWT
h Max. lowest bottom elev.
Comments Soil
Required Attachments:
1. Legible vicinity map & written directions to the project.
2. Compete Soils Report.
3. Map of the site with the boring locations to be tested.
All proposed infiltration areas and existing, active utility lines located within the proposed
basin/trench must be marked and flagged. If these areas are not Flagged, the Soils Scientist
reserves the right to decline to do the investigation. If the proposed infiltration system will be
located in an area of existing pavement and there is no open area nearby, equipment capable of
breaking through the impervious layer must be provided. The soils investigation does not take
the place of a soils report prepared by an appropriate professional. The Soils Scientist will only
verify the soil conditions that are reported in the Soils Report, and make a determination as to
the suitability of the site to meet the infiltration design requirements under NCAC 2H.1000, and
assumes no liability should the system fail.
S:1WQSISTORMWATERIFORMSIinfiltration site visit.for

PR F,
J'V'!'Ji<
November 23, 2009
North Carolina Wildlife Resources Commission
Division of Engineering Services
1720 Mail Service Centcr
Raleigh, North Carolina 27699.1720
Attention, t1%4r. Daniel Cabe, P.E.
Reference: Stormwaater Testing Services
Ocean Isle Boat Access Area
Ocean Isle Beach, North Carolina
S&ME Project No. 1.068-08-439A
Dear Mr. Cabe:
S&ViE, Inc. is pleased to provide this report for stornmater testing services at the above -
referenced site. S&VE, %vas requested by Mr. Daniel Cabe, P.E.-with the North Carolina
Wildlife Resources Commission to perform these services in preparation for the planned
site improvements. S&LME has conducted these services in general accordance with
S&ME Proposal No. 672-08(Additionaal Services) dated November 23, 2009,
Project Background
The subject properly is currently developed and comatins a public boat ramp, associated
gravel parkins; area, and undeveloped area some of which is grassed and mowed/
tllaintaiiiled. The site is located ott the east side OfCataseway Drive.
S&Iv1E performed stormwaater testing at two locations on the property in
September/October of 2008 (S&ME report dated October 13, 2008). We were informed
by ivlr. Cabe that an additional stormwaater infiltration basin was nceded, and lie requested
that we perform seasonal high welter table evaluations and hydraulic conductivity testing
services at a nc)v location as shown on a site plain provided by him. Mr. Cabe also
reclttested that we test an additional location if the new location is not silitatble for
stormwater infiltration (i.e. seasotlal high water table less than 24", and/or infiltration rate
of less than 0.52 inches per hour). Lastly, klr, Cabe requestec that. we retest the
hydraulic conductivity at a previously tested location (B-2) at a depth that corresponds to
a sandy horizon located beneath the previous lest depth.

Stornmater Testing Services S&ME Project No. 1068-08.439
Ocean Isle Boat Access Area, Ocean Isle Beach, North Carolina _OcMer 13, 2008
Find -rugs
Seasonal High Water Table Evaluations and Hydraulic Conductivity Testing
The seasonal high water table evaluations were performed on November 23, 2009 by
aclvaticing hand auger borings to deptlis of approximately 24 to 45 itiches below the
existing ground stir -face at the approximate locations shown on the attached site plan
(figure 1). The locations cori•espoiid to potential stormwater infiltration basin areas.
Soils were evaluated under the guidance ofa Licensed Soil Scientist for evidence of
seasonal high water table influence. This evaluation involved looking at the actual
moisture content in the soil and observing the matrix and mottle -colors. Depending on
the soil texture, the soil calOr will indicate processes that are driven by seasonally high
water table titietuations, such as iron reduction and Oxidation and organic matter staining.
A hand auger boring profile sheet that provides a description of the observed soil
Horizons and the determined seasonal high water tables has been included with this
report.
The soils at tocation B-3 were observed to be lostmy sand fill with clay pieces, gravel and
shell fragments present, and underlying fine sand. The seasonal high wader table was
determined to be approximately 16 inches below the existing ground surface at this
location, The soils at location B-4 consisted of loamy sand fill with few clay pieces, with
underlying tine sand horizons. The seasonal High water table -was determined to be
approximately 34 inches below the ground surface tit this location. The soils at B-4 were
determined to be more suitable for infiltration than those at B-3 due to the seasonal lush
water table being greater than 24 inches below the ground surface. See Ta blic I for the
seasonal high water table depths at the test locations,
S&ME performed the in -situ soil permeability testing by using; a compact constant head
pernieanietcr at test locations B-4 atid' B-2 (previously tested location), At the test
locations, hand auger borings were advanced 10 and.34 inclies below existing ground
surface, respectively, with a 2-inch diameter bucket. A plainer auger was used to cleat]
the bottow of the auger hole and give it a cylindrical shape. The water dissipating unit
was lowered to the bottom of the hole and water was dispensed from the permcameter,
The welter was allowed to move through the unit until steady -suite flow was achieved abet
then slow rates were recorded. The last tlUee measurements were averaged to achieve the
most representative value to express the saturated hydraulic conductivity. The depth
interval of the test corresponded to a layer of material approximately 6 inches thick at the
selected testing depth. The hydraulic conductivity rate at B-4 was calculated is being
0.75 incheslliour. The hydraulic conductivity rate at B-2 was calculated as being 9.11
inclics/hour.

I.
17 } N a •f +.i1 ti M
ing Services
-439
OceanIsleBoatrlAccess Area. Ocean Isle Beach. North Carolina � � :� ;SS�ME F?rojlictO toher68382008
TABLE I
TEST
LOCKnON
SF ASONA L HIGH WATER
TABLE (inches below surface)
TLVDRAULIC
CONDUCTIVITY RATE
B-2 (i•ctcst)
N/A
9,11 niches/liotir
B-3
16 niches
NIA
B - 4
34 inches
0.75 inelieslhour
Sec Figure I {attached} for the appimiiiiatc test locations,
Please note that these seasonal high water table evalUations are based mi semidal'y
evidence and not oli direct groundwater level Me'1SL11'C11)C1its. Groundwater levels
fluctuate for numerous reasons, and these findings do not inclicate that groundwater levels
have not or will not rise above the noted depths.
Closing
S&ME appreciates the opportunity to p1'ovide these services to YOU. If you have any
questions, please contact us,
Sincerely,
S&VIE, Inc.
Paul Masten Roberti). Willcox,,h,,,.L.S.S.
Natural Resources Project Manager Senior Reviewer
PAivl:RPW/jns
Attachments: Figure I -- Approximate 'rest Location Sketch
Soil Boring Prufiles
3

TABLE l
Seasonal High Water Table Evaluations
Soil Descriptions
Occaln Isle Beach Boat -Access
Wilmington, North Carolina
S&&lvir Project No, 1068-08-439A
Matrix Mottle
Depth
Hue/valuc
Hue/Value
Location Horizon
Inches
/Chronut
/C111.0111a
Texttkl'e/Strticture
B-3 Fill
0-9
l OYR 4/3
Loamy sand, granular, gravel and
clay pieces present
Fill
9-13
1OY114/1
Loamy sand, gravel present
Fill
13-16
MY 6/2
I..oamy sand, gravel and shell
fragments present
Elb
16-24+
2.5Y 7/4
l OYR 5/0
Fine sand, clay pieces present
10YR 4/2
,Seasonal High Water
`fable = 16"
below the existing;
ground
Sul -face.
B-4 Fill 0-18 1 OYR 4/3
lab 18-34 2.5 Y 7/2
C 34-1154- 2.5Y 5/2
OYR 5/G Loamy sand, gl'i111lliar, fe.�v clay
pieces present
10YR 4/l
Fine sand, single grain
Fine sand, single'grain
Seasonal High Neater Table = 34" below the existing ground surface. Saturated soil observed at
43" below the existing ground surface.

(ANY
Previously Comptcted
�r + ram'--+yr�-..r ^ /w'--.. -- �.'�-,.y'"`- �e•r.....�_�J` - --_ - ^�� ti-- ._
zz
1�tOtECk
MIZZ
y� � . _-'y� ---
Location Map
/f�/'/'//'yc.-:ter �� `tW �'... F -.. �w.i�_'=r.•r�*- l-..-ram!-. •i
- �flJf'•/!'s�ff/��y/y '� ,,'�1 ��-c�=_'• ___ Gtxl�.re:tr I .
jof jf�;/rir�i �"�-:-�:.'l;��f _� _—.ar•.� �"�re�. ti� ��.y��-,� — —
ijtfr1l ji: 11"'{/' ' ^ ,•S ` �• r +, Y
/J flrfi,l �r�lf,'iaf,•� y��,~ ;-'i Exiot2n(J T+fzvel
4
E3-2
1 1 _3 ti�i '[� I + II - i ' } i ° I Z..t'{mnc V l/
• 1 ���� \S =%x �'�;, 41."'•=i��•r.. �- „�_^---:tea" �-�-- i _ ,• - jf y
%
' ' Existing Crove1
® - Moue in this direction for
i I .1 -,4 <' additionsl testing if the
B-3 4 SHSt T is less Char V
I telcw ground s'.1ffCCe
?� i Er1dar pl.m C•€'Yr"7.--� �r.BolStcaS
NORTH CAROLINA 1NI11-DUFE RESOURCES COMMISSION OCBBn Isle Beach BM nemtm gomz tho ear:: I147= SH=
NMSCNOF ENG€NE-ERING SEFMCEs ocren idc, NC 1 71f1 raa r�z a4iE
�s�mer m-=-iLtiS3Rlt='
��..� � Still TesUrsg Lscabsn r" a oarhAft=.c OF i
Note: Drawing provided to S&ME by North Carolina Wildlife Resources Commission personnel.
LEGEND SCALE: NOT TO SCALE APPROXIMATE TEST LOCATION SKETCH FIGURE
Approximate OCEAN ISLE BEACH BOATING ACCESS AREA NUMSER
Test LocatiCHECKED BY: PAEVI on OCEAN ISLE BEACH, NORTH CAROLINA
PLOTTED BY: PAM
DATE: 11-23-09 S&ME PROJECT NUMBER: 1068-09-439A

i
� '

Ocean Isle Boating Access, SW8 020715
November 2009 Application, K. Johnson's Summary
Permitted
DA#1--
DA#2
BUA
DA
BUA
DA
Permitted
27,556
47,387
17,703
27,129
Proposed, Existing
27,749
48,716
17,703
27,129
DA#1
DA#2
DA#3
DA94
Proposed
Northern Drainage
Area
Southern Drainage Area
Access Drainage Area
West Drainage Area*
BUA
I DA
BUA
DA
BUA
DA
BUA
DA
Proposed, Existing
17,352j
8,980
1,417
17,703
Proposed, New
9,OOOM
4,500
0
0
Proposed, Total
2-6,3521
30,258
16,185
1,4171
2,273
17,7031
27,129
13,480
Proposed % Imp.
87.1%
83.3%
62.3%
65.3%
BMP
Infil Basin #1
Infil Basin #2
Infil Basin #3
Infil Basin #4
Boring # on Map
Boring #2
Boring #1
11/30/09 Submittal:
SHWT from permitted
-Proposed: "Close" to DA#4's SHWT boring
drawings (page 9)
-Vince's Suggestion: Use Boring #1
1213/09 SubmittalUnew borings and basin location):
-Boring #4: SHWT 34" from surface (4.5 fmsl)
-Boring #3: SHWT too shallow (16" from surface)
Bottom of Basin
8.70
9.00 V,
6.50 i/
6.15 ✓
11/30/09 Submittal:
-Proposed: 4.15
SHWT
6.20 ✓
6.90 t/
-Vince's Sug: 6.90
4.15
12/3/09 Submittal (new borings and basin location):
-Boring #4: SHWT 34" from surface (4.5 f sl) 0*51
Distance from Bottom to
2.50
2.10
11/30/09 Submittal
2.00
SH WT (counts down, higher a is on
-Proposed: 2.35
iop) (ft)
-Vince's Sugg: -0.4
1 3 09 Submittal:
2f 1/
fill*"
Top of ground
10.40
Bottom of Basin
8.70
Bottom of problem soil
7.80
Depth to fill (ft)
0.90
*Not Modifying
-� ** erified with Vince that this fill is OK (K. Johnson 11/16/09)

INFILTRATION BASIN ANALYSIS
FILENAME: s:\wqs\stormwater\excel spreadsheets\inbasin\20715
PROJECT NUMBER: SW8 20715 First Run Date:
PROJECT NAME: Ocean Isle Beach Boating Access P Last Modified:
REVIEWER: Aisha Lau
Basin 11 Basin 2 I Basin 3 Basin 4
Receiving Stream Intracoastal Waterway
River Basin Lumber permitted 4/3/03
Index Number 15-25
Classification SA 4/
J
IMPERVIOUS AREA CALCULATION
Drainage Area, sq ft = 30258 1 16185
Drainage Area, ac = 0.694628 0.371556
Buildings
Parking & Streets
Concrete & SW
Other/Future
TOTAL
% Impervious, 1, sq ft=
Post Cc=
VOLUME CALCULATION
Design Storm =
pre (0%)=
Rv, post=
Infiltration Rate, In/hr =
SHWT Elev.=
Bottom Elevation=
Bottom Surface Area =
Top/Storage Elevation =
Top/Storage SA =
Volume Calculations:
Pre -development 1-yr 24 hr
Post -development 1-yr 24 hr
Design Volume =
Total Volume Provided=
as acre -in
Is the Vol Provided?
25000
1352
12500
980
2297 27129
0.052732 0.622796
Cc
1417
15889
1814
1 26352 1 13480 1 1417 i 17703 iSf
80 85 o I 80 82/6 1 60.66/0 1 60.69 o ICC
1.5
1.5
1.5
-� 0.05w.
.�.,...,0.-83.w.w
�'0:05:�4
�0.80V-
a 0.05 � -
0.61._
5.00
5.61
0.75
6.20
6.90
4.50
8.7
9
6.5
2116
1787
268
10
9.9
7.1
2984
2260
386
1.5 in
0.64
18.00 in/hr
4.15 fmSl
6.15 fmsl
2365 Sf
7 fmsl
3019 Sf
189.1
3153.7
101.2
1617.7
14.4
173.8
169.6
2161.1
2965
1517
159
1992
3315
1821
196
2288
_ _0.9_1 _
OK
_ _0.5_0 _
OK
_ _0.0_5 _
OK
_ _0.6_3 _
OK
cf
cf
cf
cf
ac-in
0.95
0.95
0.95
0.95
19-Jan-10
19-Jan-10
from NOAA
if site is not
must be <2

Storage met at elevation= 9.86 9.75 1 6.99 1 6.89 IfMSI
Time to Draw Down = 3.36 1.82 9.52 0.56 hrs.
10 YEAR 24 HOUR EVENT - WAIVE BYPASS AND VFS
10 yr 24 hr precip depth 6
6
6
6
inch
10 yr 24 hr volume 12614.85
6470.63
695.08
8644.58
Cf
Volume infiltrated in 24 hrs. 10580
10025.07
201
42570
Cf
Remaining volume to store 2034.85
-3554.45
494.075
-33925.4
Cf
Sufficient volume provided? YES
YES
NO
YES
COMMENTS
Volume and drawdown are within Design Requirements.
Bypass provided.
from NOAA

NCDENR
North Carolina Department of Environment and
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
March 2, 2010
Mr. Erik Christofferson
Chief, Division of Engineering Services
North Carolina Wildlife Resources Commission
1720 Mail Service Center
Raleigh, NC 27699-1720
Subject: NOTICE OF INSPECTION
Ocean Isle Beach Boating Access Area
Permit No. SW8 020715
Brunswick County
Dear Mr. Christofferson:
Natural Resources
Dee Freeman
Secretary
On Tuesday, February 23, 2010, Aisha Lau of the Wilmington Regional Office of the
Division of Water Quality (DWQ) inspected Ocean Isle Beach Boating Access Area in
Brunswick County to determine compliance with Stormwater Management Permit
Number SW8 020715 issued on April 3, 2003. DWQ file review and site inspection
revealed that the site is not compliant with the terms and conditions of this permit.
Please find a copy of the completed form entitled "Compliance Inspection Report"
attached to this letter, which summarizes the findings of the recent inspection.
As indicated in the attached inspection report, the following deficiencies must be
resolved:
1. The level spreader shown on the approved plans for basin #2 was either never
installed, or has since been eliminated.
To bring this system into compliance, the following must be completed:
1. Either install the level spreader for Basin #2 as indicated on the approved plans,
or have an engineer certify with a signed and sealed letter that the system is
functioning as intended as installed, along with two copies of a signed and sealed
"as -built" drawing of the existing system to replace the previously approved plan
in the file.
Please inform this Office in writing before Tuesday, March 30, 2010, of the specific
actions that will be undertaken and the time frame that will be required to correct the
deficiencies. Failure to provide the requested information, when required, may initiate
enforcement action including the assessment of civil penalties of up to $25,000 per day.
If a written plan of action is not submitted to this office by Tuesday, March 30, 2010
then DWQ staff will re -inspect the site and issue a Notice of Violation if the listed
deficiencies have not been addressed.
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One
Phone: [phone]' FAX: [phone] Customer Service: 1-877-623-6748 North C arol in a
Internet: www.ncwaterquality.org a 1mra l ,
An Equal Oppmunity i Affirmative Action Ern*yer J �/ ` "✓/

Please be reminded that if any ownership or name change has occurred it is the
permittee's responsibility to notify this office in writing. If you have any questions please
contact me at the Wilmington Regional Office, telephone number [phone].
Sincerely,
61Izz- �/
/,-,f,-
Aisha Lau
Environmental Engineer
Enclosure: Compliance Inspection Report
GDSlahl: S:\WQSISTORMWATER1iNSPECT1020715.mar10
cc: John Hennessy-NPS-ACOU
via e-mail - Mr. Daniel Cabe — [e-mail]
WiRO Files
DWQ Central Files
Page 2 of 2

Compliance Inspection Report
Permit: SW8020715 Effective: 04/03/03 Expiration: 04t03113 Owner: NC Wildlife Resources Commission
Project: NC Wildlife Resources Commission Ocean
Isle Beach
County: Brunswick Sr 1272 Causeway Dr
Region: Wilmington
Ocean Isle Beach NC 28469
Contact Person: Erik D Christofferson Title: Section Chief Phone: [phone]
Directions to Project:
Ocean Isle Beach, SR 1272 (Causeway Drive)
Type of Project: State Stormwater- High Density
Drain Areas: 1 - (Intracoastal Waterway) (03-07-59 ) ( SA;HQW)
2 - (Intracoastal Waterway) (03-07-59 ) ( SA;HQW)
On -Site Representative(s):
Related Permits:
Inspection Date: 02/23/2010 Entry Time: 11:50 AM
Primary Inspector: Aisha H Lau
Secondary Inspector(s):
Reason for Inspection: Other
Permit Inspection Type: State Stormwater
Facility Status: ❑ Compliant ❑ Not Compliant
Question Areas:
IN State Stormwater
(See attachment summary)
State Stormwater - infiltration System
Exit Time: 01:11 PM
Phone: [phone]
Inspection Type: Stormwater
Page: 1

Permit: SW8020715 owner - Project: NC Wildlife Resources Commission
Inspection Date: 02123/2010 Inspection Type: Stormwater Reason for Visit: Other
Inspection Summary:
The following deficiencies were noted during the inspection:
1. The level spreader shown on the approved plans for basin #2 was either never installed, or has since been eliminated.
To bring this system into compliance, the following must be completed:
1. Either install the level spreader for Basin #2 as indicated on the approved plans, or have an engineer certify with a
signed and sealed letter that the system is functioning as intended as installed, along with two copies of a signed and
sealed "as -built" drawing of the existing system to replace the previously approved one in the file.
File Review
Is the permit active?
Signed copy of the Engineer's certification is in the file?
Signed copy of the Operation & Maintenance Agreement is in the file?
Copy of the recorded deed restrictions is in the file?
Comment:
Built Upon Area
Is the site BUA constructed as per the permit and approval plans?
Is the drainage area as per the permit and approved plans?
Is the SUA (as permitted) graded such that the runoff drains to the system?
Comment:
SW Measures
Are the SW measures constructed as per the approved plans?
Are the inlets located per the approved plans?
Are the'outlet structures located per the approved plans?
Comment: The level spreader shown for current basin #2 (becoming basin #4 in
modified permit) was not installed. Despite no level spreader in place, there was no
visible erosion occurring from the discharge pipe into the vegetated filter.
Operation and Maintenance
Are the SW measures being maintained and operated as per the permit requirements?
Yes No NA NE
®❑ ❑ ❑
®❑ Cl ❑
®❑n❑
❑n®C)
Yes No NA NE
®❑❑❑
®❑❑❑
®n❑❑
Yes No NA NE
❑ IJ ❑ ❑
a1300
❑ a ❑ ❑
Yes No NA NE
am ❑ ❑ ❑
Are the SW 13MP inspection and maintenance records complete and available for review or provided to DWQ ❑ ❑ Q
upon request?
Comment:
Page: 2

DIVISION OF COASTAL MANAGEMENT
FIELD INVESTIGATION REPORT
1. APPLICANT'S NAME: NC Wildlife Resources Commission, c/o Daniel Cabe
2. LOCATION OF PROJECT SITE: The project is located on Causeway Drive, adjacent to the AIWW, in Ocean
Isle Beach, in Brunswick County.
Photo Index - 2006: ' 2-6201, G (6-7) 2000: 2-21, R (19) 1995: 2-16, R (4-5)
State Plane Coordinates - X: 217031 Y: 53018 GPS -- N04071 I
Latitude: 33°53'39.62305"N Longitude: 78°26' 19.99441"W
3. INVESTIGATION TYPE: CA�IA
4. INVESTIGATIVE PROCEDURE: Dates of Site Visit — 4/7/09
Was Applicant Present -- No
5. PROCESSING PROCEDURE: Application Received — 4/28/09 (complete)
Office - Wilmington
6. SITE DESCRIPTION:
(A) Local Land Use Plan —Brunswick County
Land Classification From LUP — Conservation
(B) AEC(s) Involved: EW, PTA, ES
Water Dependent: Yes
(D) Intended Use: Public
(E) Wastewater Treatment: Existing — None Planned- None
(F) 'Type of Structures:
Existing — Public boat ramp facility.
Planned - Expand and pave existing gravel parking lot and install new stormwater system.
(G) Estimated Annual Rate of Erosion: N/A
Source - NIA
7. HABITAT DESCRIPTION: [AREA]
DREDGED FILLED OTHER
(A) Vegetated Wetlands- Coastal & 404-type
(B) Non -Vegetated Wetlands
(O en water)
(C) Other - I-Iighground
--1.62 acres
(disturbed)
(D) Total Area Disturbed: 1.62 acres
(E) Primary Nursery Area: Yes
(P) 'Water Classification: SA, Open: No
PROJECT SUNITNIARY: The applicant is proposing to expand and pave the existing gravel parking lot and
install a new stormwater system.

NC Wildlife Resources Commission, c/o Daniel Cabe
Page Two
9. PROJECT DESCRIPTION
The project is located off Causeway Drive, adjacent to the Atlantic Intracoastal Waterway (A1WW), just southeast
of the Ocean isle Beach Bridge in Ocean Isle Beach, Brunswick. County. To find the project site, travel south on
US Highway 17 to Ocean Isle Beach Road SW. 'Turn left onto Ocean Isle Beach Road SW and travel
approximately 4 miles to the Ocean Isle Beach high rise bridge. The subject property is located underneath and
immediately adjacent to the Ocean Isle Beach high-rise bridge on the island.
The entire property consists of a 3.6-acre tract located within the planning jurisdiction of Ocean Isle Beach. The
tract averages approximately 6'above normal high water (NIIW}. The site currently functions as a public boat
ramp facility. Two concrete boat ramps are located in the center of the A1WW shoreline at the site. A gravel
parking area occupies the high ground portion of the site, with a total impervious area of approximately 63,064
square feet (46,321 square feet of which is within the Estuarine Shoreline Area of Environmental Concern).
Coastal wetlands are present, consisting primarily of a fringe of Salt Marsh Cordgrass (Spartina alterniflora)
along the shoreline east and west of the boat ramps. The parcel is not serviced by water or sewer.
State permit #56-03 was issued to the NC Wildlife Resources Commission on April 21, 2003 for the installation
of the boat ramps, floating dock, bulkhead and parking lot. It was later modified in September 2003 to allow for
reconfiguration of the boat ramp and floating dock. The permit expired December 31, 2006.
The waters of the A1WW, adjacent to the project site, are classified as SA by the North Carolina Division of
Water Quality. They are designated as a Primary Nursery Area (PNA) by the N.C. Division of Marine Fisheries
and they are closed to the harvest of shellfish.
PROPOSED PROJECT
The applicant is proposing to expand and pave the existing gravel parking lot area and install a new stormwater
system. The work would result in the disturbance of approximately 1.62 acres (70,531 square feet) of high ground
(see Sheet 2 of 16). The existing gravel access road which leads to the boat ramp and the existing single car
parking areas located on the western portion of the site are to be paved however, no expansion of this area is
proposed. As proposed, the existing 300' in length by 82' in width trailer parking area is to be expanded eastward
an additional 43, resulting in the entire parking area measuring approximately 300' in length by 125' in width.
This entire area is also to be paved. This expansion will result in 28 additional vehicle with trailer spaces each
measuring approximately 40' in length by 10' in width and 1 ADA (handicap) vehicle with trailer space
measuring approximately 40' in length by 12' in width (see Sheets 3 & 4 of 16). As proposed, all arias to be
paved would consist of a 6" layer of ABC rock covered with 3" of asphalt (see Sheet 4 of 16). This would result
in approximately 40.5% (or 63,064 square feet) of the 3.6 acre parcel covered by impervious surface of which
approximately 27% (or 12,530 square feet) would be located within the 75' Estuarine Shoreline Area of
Environmental Concern (AEC). As proposed, the parking area expansion would be located over the previously
permitted infiltration basin. Therefore, the stormwater runoff, as proposed, would be redirected to three (3) new
stormwater basins (all located landward of the 30' buffer). Adjacent to each basin will be a level spreader and
vegetative filter (see Sheets 3 & 5-16 of 16). The application states that a Stormwater application was submitted
to the NC Div. Of Water Quality on March 18, 2009. The applicant is also proposing to install a new split rail
fence along the eastern perimeter of the parking lot expansion area.

INFILTRATION BASIN ANALYSIS FILENAME: G:NDATA\WPDATA\WQS\INBASIN1020715-2.WKI
PROJECT NUMBER: 020715-2 DATE: 03-Apr-03
PROJECT NAME: NCWRC Boat Ramp Ocean Isle Beach
DRAINAGE BASIN: Lumber REVIEWER: L. Lewis
RECEIVING STREAM: ICWW CLASS: SA
Index No.: LBR59 15-25
SITE AREA 3,6 acres
IMPERVIOUS AREA CALCULATION
BUILDINGS
PARKING/ASPHALT
CONCRETE
OTHER
DRAINAGE AREA: SF
Rational C
17703 1
TOTAL
Place a "1" here if Rational
% IMPERVIOUS, I= -- RV= -05+. 009 (I)= t) 64.j
-- ------
ELEVATION OF SEASONAL HIGH WATER TABLE FEET MSL
1:8 INCHES/HOUR
REPORTED INFILTRATION RATE
or 0.000417 FPS
SURFACE AREAS AND ELEVATIONS
Elev. (ft) Area, sq ft Inc. Volume Acc- Volume
BOTTOM 6.15 2365
0
TOP 7.00 3019
2288.2 2288.2
VOLUME 1 DEPTH / DRAWDOWN CALCULATION
DESIGN STORM, INCHES
DESIGN VOLUME
16f: CUBIC FEET
TOTAL VOLUME AVAILABLE
CUBIC FEET
STORAGE MET @ ELEVATION
MSL
TIME TO DRAWDOWN
HOURS MUST BE <120
25 YEAR 24 HOUR STORM NIA
Intensity, i = .33 inches I hour
Qr-- C i A =
0.15 CFS
Op through the bottom of the basin=
0.99 CFS Must be > Or
10 YEAR 10 MIN HIGH INTENSITY EVENT
Intensity, i = 6.3 inches / hour
Volume for 10 yr. 10 min. event =
1699.80 CF < 2288.2 CF
COMMENTS
Volume and drawdown are (not) within Design Requirements,

INFILTRATION BASIN ANALYSIS FILENAME: G:lDATAIWPDATAIWQSIINBASIN1020715-1.WK1
PROJECT NUMBER:
020715-1 DATE: 24-Mar-03
PROJECT NAME:
NCWRC Boat Ramp Ocean Isle Beach
DRAINAGE BASIN:
Lumber REVIEWER: L. Lewis
RECEIVING STREAM:
ICWW CLASS: SA
Index No.:
LBR59 15-25
SITE AREA 3.6 acres
IMPERVIOUS AREA CALCULATION
BUILDINGS
PARKING/ASPHALT
CONCRETE
OTHER
TOTAL
% IMPERVIOUS, I= 582°lad
ELEVATION OF SEASONAL HIGH WATER TABLE
REPORTED INFILTRATION RATE
SURFACE AREAS AND ELEVATIONS
DRAINAGE AREA: I:. s,:.::::.:::;''478ISF
Rational C
27556 1
Elev. (ft) Area, sq It Inc. Volume Acc. Volume
BOTTOM 8.5 3861
TOP 9.3 5289
VOLUME I DEPTH I DRAWDOWN CALCULATION
DESIGN STORM, INCHES
DESIGN VOLUME
TOTAL VOLUME AVAILABLE
STORAGE MET @ ELEVATION
TIME TO DRAWDOWN
25 YEAR 24 HOUR STORM NIA
Intensity, i = .33 inches 1 hour
Or=CiA
Qp through the bottom of the basin=
10 YEAR 10 MIN HIGH INTENSITY EVENT
Intensity, i = 6.3 inches I hour
Volume for 10 yr. 10 min. event =
0
3660 3660
15
3.396: CUBIC FEET
3 .60.: CUBIC FEET
24:; FMSL
t} 6, HOURS MUST BE <120
0.24 CFS
1.61 CFS Must be > Or
2735A0 CF < 3660 CF
COMMENTS
Volume and drawdown are (not) within Design Requirements.