SW8040703_COMPLIANCE_20040812

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW �,o^f' D7B 3
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
•?lJ%l�DS�ly�
YYYYMMDD

STORMWATER DIVISION CODING SHEET
PERMIT NO.
DOC TYPE
❑ FINAL PERMIT
❑ MONITORING REPORTS
❑ APPLICATION
❑ COMPLIANCE
❑ OTHER
DOC DATE
❑
YYYYM MDD

Compliance Inspection Report
Permit: SW8040703 Effective: 08/12/04 Expiration: Owner: Hunterstone Apartments LLC
Project: Hunter Stone Apartments
County: Brunswick Westgate Dr
Region: Wilmington
Contact Person: Mark L Maynard Title:
Directions to Project:
US Hwy 17 to Westgate Drive, opposite entrance to Magnolia Greens
Type of Project: State Stormwater - HD - Detention Pond
Drain Areas: 1 - (Jackeys Creek) (03-06-17) ( C;Sw)
On -Site Representative(s):
Related Permits:
Inspection Date: 0211512010 Entry Time: 11:35 AM
Primary Inspector: Vincent Lewis
Secondary Inspector(s):
Reason for Inspection: Routine
Permit Inspection Type: State Stormwater
Facility Status: ® Compliant ❑ Not Compliant
Question Areas:
State Stormwater
(See attachment summary)
Leland NC 28451
Phone: [phone]
Exit Time. 12:00 PM
Phone:
Inspection Type: Compliance Evaluation
Page: 1

Permit: 5W8040703 Owner - Project: Hunterstone Apartments LLC
Inspection Date: 02/15/2010 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
This stormwater system meets the minimum requirments for this office.
File Review
Yes
No
NA
Nt
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
Yes
No
NA
NE
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 BUA (as permitted) graded such that the runoff drains to the system? ■ ❑ ❑ ❑
Comment:
Operation and Maintenance Yes No NA NE
Are the SW measures being maintained and operated as per the permit requirements? ■ ❑ ❑ Cl
Are the SW BMP inspection and maintenance records complete and available for review or provided to IJWQ ❑ ❑ ❑ ■
upon request?
Comment:
L11.I .■___..___ Yes No NA NE
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:
Page: 2

I>CG,
eneral
State' Storm ater inspection Report
Project Nanzel SGn� G�`
Permit No: SW8 6
Expiration Date: 4
Contact Person:.
Phone Number:
Inspection Type:
a,� 1
Inspection Date: z
Time In: ' 3
Time Out:
Current Weather:
Recent Rain (Date)?
Rain — in
Location
Facility Address / Location:
City: 2 I G Zip: un Lat; ° "N Long: - "W
r.
Permit Information
Rule Subject to (circle one): 1988 Coastal Rule 1995 Coastal Rule
Goose Creek High Quality Water,,
Density (circle one): -High (HD) Low (LD)
St. Awater Best Managemen ractices (BMPs) (insert number of each):
VV Wet Ponds Infiltration Basins Infiltration Trenches
Dry Ponds Bioretention Permeable Pavement
Cistern Level Spreader/Filter Strip Other (speck):
File Review
2008 Coastal Rule Session Law 2006-246
Outstanding Resource Waters
LD Swales Stormwater Wetlands
Sand filters (circle one) Open Closed
Yes No NIA NIE
1. Is the permit active?
2. Signed Engineer's Certification on tile?
3. Signed Operation and Maintenance a regiment on file?
4. Recorded Deed Restrictions on file?
Site Vkit- Built 11nnn.ArPa f R1IA1
Iles No N/A NIE
5. BUA is constructed and consistent with the erntit re uirements?
6. I3UA (aspermitted) is graded such that the runoff drains to the system? (high density only)
X
7. Drainage area is consistent withpermit? (i.e. no un ennitted drainage to the SW BMPs
8. Drainage area is stabilized? (to reduce risk of sedimentation to the SW BMPs)
`
Site Visit- Stormwater RRAPs
Yes No N/A N1E
9. Stormwater BMPs are located per the approvedplans?
10..Stormwater BMPs have dimensions e . length, width, area matching the approvedplans?
11. Stormwater BMPs are constructed per the approvedplans?
Site Visit- Onerattion and Maintenance
Yes No NIA NNE
12. Access points to the site are clear and well maintained?
X
13, Trash has been removed as needed?
14. Excessive landscape debris Crass clippings, leaves etc) is controlled?
15. Stormwater BMPs. being operated and maintained as per the permit requirements?
7i
16. Inspection and Maintenance records are available for inspection? high density only, 1995 — present —only)
Site Visit: Other Permit Conditions I . Yes No NIA N1E
FIT Is the site compliant with other conditions of the ertnit?
Site !Visit: Other Water gualitV Issues Yes No NIA NIE
18. Is the site compliant with other water quality issues as noted during the inspection?
State Stormwaler Inspection Report, Version 3.0_3-09 Page I oft

SWe Stour water Bnspecfoon Deport
e e ecn as
-0 wq �1 ,h sd� t f 4LGS `the-117 ' bn"i,�
4� v �� 1Z,E s l^ut���� Uje- ,s ar�� -�� 11 �,>t.�
[Ion Pictures (some of the pictures taken during the site vis
Compliance Status Cl 'Compliant L11 Non -Compliant
Letter Sent (circle one): Yes No Letter type: CEI NOV NOVRE Other
Date Sent: Reference Number:
11
Inspector Blame and Signature. C � QW PS b.II& Date: Z ��
a%d
State Stotinwater Inspection Report, Version 3.0_3-09 Page 2 of 2

jr ..
WET DETENTION O & M Inspection Checklist
INLETS and FOREBAY
1. Inlets are located per the approved plans:
®El
❑
❑
2. Inlet device (swale or pipe) is free of damage, clogs or erosion:
V]
❑
❑
❑
3. Forebay berm is in place and without erosion:
❑
❑
❑
4. Forebay is free of excessive sediment:
(
❑
❑
❑
SIDE SLOPES AND BANKS
5. Vegetated slopes are 3:1 or less:]
❑
❑
❑
6. Banks are stable and free of erosion or bare soil:
❑
❑
❑
7. Slopes or berms are free of woody vegetation:
❑
®
❑
❑
8. Free of muskrats or beaver activity:
0
❑
❑
❑
9. Grass is being maintained and mowed (not scalped) as required:
9
❑
❑
❑
PERIMETER AND MAIN BAY
10. Vegetated shelf is 6:1 or 10:1 as permitted and properly vegetated:
❑
❑
❑
11. Algal growth covers less 500/b of the area:
®
❑
❑
❑
12. Cattails, phragmites or other invasive plants cover less than 500/0 of the basin surface:
©
❑
❑
❑
13. Main treatment area is free from excess sediment accumulation:]
❑
❑
❑
OUTLETS
14. Swale or emergency outlet bypass is in the correct place and is in good condition:
V1
❑
❑
❑
15. Drawdown device is correctly sized free of damage or clogging:
®
❑
❑
❑
16. Orifice size matches the approved plans
©
❑
❑
❑
17. Outlet is free of erosion or other signs of damage:
❑
❑
❑
18. Trash rack is installed
Q
❑
❑
❑
19. Vegetated filter is in place (if applicable)
�]
❑
❑
❑
20. Relative elevations match approved plans
0
❑
❑
❑
21. Fountain pump (if permitted) is less than or equal to the maximum allowable size:
©
❑
❑
❑
V3.3_09

DETENTION POND ANALYSIS FILE NAME: G:IDATAIWPDATAIWQSIPOND1040703.WK1
PROJECT #: SW8 040703 REVIEWER: L. Lewis
PROJECT NAME:
HunterStone Apartments
DATE:
22-Jul-04
Receiving Stream:
Jackey's Creek
Class:
C SW
Drainage Basin:
Cape Fear
Index No.
CPF17 18-77-3
Site Area
26.46 acres
Drainage Area
90t8 00 square feet
Area W
20.80 acres
IMPERVIOUS AREAS
Rational C
Buildings 108390.00
square feet
Street 67600.00
square feet
Westgate Drive
Parking 223345.00
-square feet
SW 40265.00
square feet
Other 17780.00
square feet
square feet
TOTAL 4573$O.Og <
square feet
Rational Cc= 0.10
SURFACE AREA CALCULATION
% IMPERVIOUS
50.48%
SA/DA Ratio
1.52%
Des, Depth
7.5
Req. SA
13765 sf
TSS:
90
Prov. SA
8D00< sf
VOLUME CALCULATION
* place a "1"
in the box if Rational is used
Rational ?*
FOREBAY
Des. Storm
..;.:..�.40 inches
Perm. Pool Volume= 77170
Rv=
0.50
Req. Forebay Volume= 15434
Bottom
3.5 msl
Provided Volume= 15160.00
Perm. Pool
11 OD: msI
Percent=
Design Pool
13 msl
Design SA
24630 sf
Req. Volume
38079! cf
SA @ 12 =
21250
Prov. Volume
49565 i cf
Elevation=
12
ORIFICE CALCULATION
Avg. Head =
0.96 ft
Q2 Area =
6.73
sq. in.
Flow Q2, cfs
0.220 cfs
Q5 Area =
2.69
sq. in.
Flow Q5, cfs
0.088 cfs
Orifice Area
3.14
sq. in.
No. of Orifices
.._.1:
Q=
0.103
cfs
Diameter, inches :......:., 2 00', weir H x W in x
in
Drawdown = 4 3> days
COMMENTS
Surface Area , Volume and Orifice are within Design Guidelines