SW8020406_COMPLIANCE_20121227

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑CURRENT PERMIT
[]'APPROVED PLANS
❑ HISTORICAL FILE
�D COMPLIANCE EVALUATION INSPECTION
L
DOC DATE
YYYYMMDD

CDENR
North Carolina Department of Environment and Natura
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E.
Governor Director
December 27, 2012
John D. Lennon
Previous Manager — Avenir Development, LLC
1437 Military Cutoff Road, Suite 201
Wilmington, NC 28403
Subject: NOTICE OF INSPECTION 1 FILE REVIEW
Avenir
Stormwater Permit No. SW8 020406
New Hanover County
Dear Mr. Lennon:
Resources
Dee Freeman
Secretary
On December 27, 2012, staff at the Wilmington Regional Office of the Division of Water Quality
(DWQ) reviewed the file for Avenir Subdivision in New Hanover County to determine
compliance with Stormwater Management Permit Number SW8 020406 issued on September
11, 2002. DWQ file review revealed that the site is in compliance 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 file review.
As indicated in the attached inspection report, the following deficiencies have been resolved:
1. An engineer's certification for the stormwater infiltration trench system was received on
May 8, 2012.
2. Deed restrictions have been amended and recorded on December 21, 2012 as required
by the permit.
Please be advised that you are required to comply with the terms, conditions and limitations of
your Stormwater Management Permit under Title 15A North Carolina Administrative Code 2H
.1003 and North Carolina General Statute 143-214.7, including operation and maintenance of
your permitted stormwater system.
Since these issues have been resolved and the permit is deemed compliant, and Avenir
Development, LLC is now dissolved, you should transfer the permit to the Homeowners
Association by completing the Name/Dwnership Transfer form located at web address
http://portal.ncdenr.org/web/wq/ws/su/statesw/formsdocs. If you have any questions, please
contact me at the Wilmington Regional Office, phone number [phone].
Sinc Pely,
eve G. P eueg y
nvironmental Engineer
Enc: Compliance Inspection Report
GDSlsgp: S:1WQS1StormwateAPermits & Projects120021020406 HD12012 12 CEI_compliant 020406
cc: Phil Tripp, PE — Tripp Engineering
J.C. Hearne, II, Attorney — White and Hearne, LLP
New Hanover County Building Inspections
Karen Higgins, WBS-CPU
WiRO Stormwater File
W'dmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405
Phone: [phone] FAX: [phone] DENR Assistance: 1-877-623-6748
Intemet: www.ncwalerquality.org
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Compliance Inspection Report
Permit: SW8020406 Effective: 09/11/02 Expiration: 09/11/16 Owner: Avenir Development LLC
Project: Avenir
County: New Hanover Masters Ln
Region: Wilmington
Wilmington NC 28403
Contact Person: Christopher G Yerkes Title: Manager Phone: [phone]
Directions to Project:
From intersection of Oleander Dr. (US Hwy 76) and Pine Grove Rd., drive Southeast on Pine Grove Rd. approximately 0.85 miles.
Take Greenville Loop Road East for 500 feet. Turn left onto Masters Lane. Site on right.
Type of Project. State Stormwater - Infiltration System
Drain Areas: 2 - (Hewletts Creek) (03-06-24 ) ( SA; HOW)
3 - (Hewletts Creek) (03-06-24 ) ( SA;HQW)
4 - (Hewletts Creek) (03-06-24 ) ( SA: HOW)
On -Site Representative(s):
Related Permits:
Inspection Date: 1212712012 Entry Time: 01:15 PM
Primary Inspector: Steven G Pusey
Secondary Inspector(s):
Reason for inspection: Follow-up
Permit Inspection Type: State Stormwater
Facility Status: ® Compliant ❑ Not Compliant
Question Areas:
® State Stormwater
(See attachment summary)
Exit Time: 01:30 PM
Phone:
Inspection Type: Transfer Renewal
Page: 1

Permit: SW8020406 Owner - Project: Avenir Development LLC
Inspection Date: 12/2712012 Inspection Type: Transfer Renewal Reason for Visit: Follow-up
Inspection Summary:
This project meets the minimum requirements for compliance with the permit.
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: Engineer certification submitted May 8, 2012.
Deed restrictions were amended and recorded on December 21, 2012.
G`IAI RA-- -..---
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:
Yes No NA NE
Page: 2

ALFRAJ
• •
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
October 11, 2011
Christopher G. Yerkes
Previous Manager — Avenir Development, LLC
2124 Echo Lane
Wilmington, NC 28403-6021
Ph: 910-251-7925
Subject: NOTICE OF INSPECTION
Avenir
Stormwater Permit No. SW8 020406
New Hanover County
Dear Mr. Yerkes:
On October 5, 2011, Steve Pusey of the Wilmington Regional Office of the Division of Water Quality
(DWQ) inspected Avenir Subdivision in New Hanover County to determine compliance with Stormwater
Management Permit Number SW8 020406 issued on September 11, 2002. DWQ file review and site
inspection revealed that the site is not in compliance 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. Submit an engineer's certification for the stormwater infiltration trench system.
2. Submit a copy of the recorded deed restrictions.
Once these issues have been resolved and the permit is deemed compliant, you can transfer the permit
to the new owner by completing the Name/Ownership Transfer form located at
httn.//portal.ncdenr.org/web/Wq/ws/su/statesw/forms dots.
Please inform this Office in writing before November 7, 2011 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, or to respond to this letter by the due date, 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 November 7, 2011, then DWQ staff will re -inspect the site and issue a Notice of
Violation if the listed deficiencies have not been addressed.
Please be reminded that if an ownership change, or a name change or a mailing address change has
occurred, it is your responsibility to submit a completed and signed Name/Ownership Change form to the
Division. Please include the name, mailing address and phone number of the party who is now
responsible for this permit. If you have any questions, please contact me at the Wilmington Regional
Office, telephone number [phone].
Sincerely,
Steve G. Pusey
Environmental Engineer
Enc: Compliance Inspection Report
GDSlsgp: S:IWQSIStormwater\Permits & Projects120021020406 HD12011 10 CEI—deficient 020406
cc: Karen Higgins, WBS-CPU
Phil Tripp, PE — Tripp Engineering, PC
WiRO Stormwater File
DWQ Central Files
Wilmington Regional Once
127 Cardinal Drive Extension, Mmingtcn, North Carolina 28405 One
Phone: [phone] FAX [phone] Customer Service: 1-877-623-6748 North Carrol i na
Internet; www.ncwaterqualiry.org Naturrrllil
An Equal Opportunity l Aftrrmative Action Employer

Compliance Inspection Report
Permit: SW8020406 Effective: 09/11/02 Expiration: 09/11/12 Owner: Avenir Development LLC
Project: Avenir
County: New Hanover Masters Ln
Region: Wilmington
Wilmington NC 28403
Contact Person: Christopher G Yerkes Title: Manager Phone: [phone]
Directions to Project:
From intersection of Oleander Dr. (US Hwy 76) and Pine Grove Rd., drive Southeast on Pine Grove Rd. approximately 0.85 miles.
Take Greenville Loop Road East for 500 feet. Turn left onto Masters Lane. Site on right.
Type of Project: State Stormwater - Infiltration System
Drain Areas: 2 - (Hewletts Creek) (03-06-24 ) ( SA; HOW)
3 - (Hewletts Creek) (03-06-24 ) (SA;HQW)
4 - (Hewletts Creek) (03-06-24 ) ( SA; HOW)
On -Site Representative(s):
Related Permits:
Inspection Date: 10/05/2011 Entry Time: 11:00 AM Exit Time: 12:00 PM
Primary Inspector: Steven G Pusey Phone:
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Type: Transfer Renewal
Permit Inspection Type: State Stormwater
Facility Status: ❑ Compliant ■ Not Compliant
Question Areas:
® State Stormwater
(See attachment summary)
Page: 1

r
Permit: SW8020406 Owner - Project: Avenir Development LLC
Inspection Date: 10105/2011 Inspection Type: Transfer Renewal Reason for Visit: Routine
Inspection Summary:
The following items are needed to bring this permit into compliance:
1. Need engineer certification of stormwater infiltration trench system
2. A copy of the recorded deed restrictions was found. However, there appears to be a discrepancy. The deed
restrictions in the permit state that the allowable built -upon area is 3,000 square feet per lot, but the recorded deed
restrictions state that the built -upon area of each Lot is limited to 85% of the Lot area. As stated in Section IIJ3 of the
permit, the permittee must maintain compliance with the proposed built -upon area and ensure that the runoff from all
built -upon area is directed into the permitted system. Therefore, the built -upon area must be verified that it is less than
3,000 square feet per lot throughout the subdivision.
Page: 2

Permit: Sw8020406 Owner - Project: Avenir Development LLC
Inspection Date: 10/05/2011 Inspection Type: Transfer Renewal Reason for Visit: Routine
File Review Yes No NA NE
Is the permit active?
0000
Signed copy of the Engineer's certification is in the file?
❑
■ Q
❑
Signed copy of the Operation & Maintenance Agreement is in the file?
■
Q 0
Copy of the recorded deed restrictions is in the file?
❑
■ ❑
❑
Comment: Need engineer certification of stormwater infiltration trench system.
A copy of the recorded deed restrictions was found. However, there appears to be a
discrepancy. The deed restrictions in the permit state that the allowable built -upon area
is 3,000 square feet per lot, but the recorded deed restrictions state that the built -upon
area of each Lot is limited to 85% of the Lot area. As stated in Section 11.13 of the
permit, the permittee must maintain compliance with the proposed built -upon area and
ensure that the runoff from all built -upon area is directed into the permitted system.
Therefore, the built -upon area must be verified that it is less than 3,000 square feet per
lot throughout the subdivision.
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?
■
❑
Q
Comment:
C-%Ar ii___..-__
V, Al-
AlA
AIC
Are the SW measures constructed as per the approved plans?
■ ❑
Q
❑
Are the inlets located per the approved plans?
■ ❑
Are the outlet structures located per the approved plans?
■ ❑
❑
Q
Comment:
Operation and Maintenance Yes No
NA
NE
Are the SW measures being maintained and operated as per the permit requirements?
❑ 0
❑
0
Are the SW BMP inspection and maintenance records complete and available for review or provided to li
❑ Q
[I
■
upon request?
Comment:
Page: 3

State Stormwater Inspection Report
r,nnaml
Project Name: t r
Permit No: SW8 Dzo y6 6
Expiration Date:
Contact Person:
Phone Number:
Inspection Type: s�iD
Inspection Date: 1015111
Time In: /t : ao ;,,
Time Out: / Z
Furr—entweather: 86 Df Soh 11
Recent Rain (Date)? /L4
Rain — in
I
Location
Facility Address / Location:
City: ki /M X 2 Zip. Z 3lf 03 County: NW G Lat: o C "N Long: - o 1 "W
Permit Information
Rule Subject to (circle one): 1988 Coastal Rule 1995 Coastal Rule 2008 Coastal Rule Session Law 2006-246
Goose Creek High Quality Waters Outstanding Resource Waters
Density (circle one): High (HD) Low (LD)
Stormwater Best Management Practices (BM Ps) (insert number of each):
Wet Ponds Infiltration Basins ;Infiltration "Trenches LID Swales Stormwater Wetlands
Dry Ponds Bioretention Permeable Pavement Sand filters (circle one) Open Closed
Cistern Lcvel Spreader/filter Strip Other (spec):
File Review Yes ,No NIA NIE
I. Is the permit active?
2, Si ned Engineer's Certification on file?
3. Signed Operation and Maintenance agreement on file?
4. Recorded Deed Restrictions on file?
Sites Visit- Ruilt Unnn Area 1RIIA1 Yes No NIA NIE
5. BUA is constructed and consistent with the permit requirements?
✓
6. BUA aspermitted) is graded such that the runoff drains to the system? (high density only)
7. Drainage area is consistent withpen-nit? i.e. no un ermitted drainage to the SW BMPs
8. Drainage area is stabilized? to reduce risk of sedimentation to the SW BMPs
Site Visit- Stormwater RMPs Yes No NIA NIE
9. Stormwater BM Ps are located per the approvedplans?
i 0. Stormwater BMPs have dimensions e . length, width, area matching the approvedplans?
11. Stormwater BMPs are constructed per the approvedplans?
Site Visit: Oneration and Maintenance Yes _ No NIA NIE
12. Access points to the site are clear and well maintained?
13. Trash has been removed as needed?
14. Excessive landscape debris(grass clippings, leaves, etc is controlled?
15. Stormwater I3MPs being operated and maintained as per the pennit requirements?
16. Inspection and Maintenance records are available for inspection?_ (high density only, 1995 —present onl
Site Visit: Other Permit Conditions Yes No NIA NIE
17. Is the site compliant with other conditions of the permit?
Site Visit: Other Water Quality Issues Yes No NIA NIE/
1 18. Is the site compliant with other water quality issues as noted durinp- the inspection? I I I 1 V
State Stormwater inspection Report, Version 3.0_3-09 Page 1 of

State Stormwater Inspection Report
#1o * E -,S4­v Il-�dp. /t r rl l,- A
51 J-.S al C,r os r�r
&V
n Pictures (some of the pictures taken during the site
Compliance Status ❑ Compliant ❑ Non -Compliant
Letter Sent (circle one): Yes No Letter type: CEI NOV NOVRE Other
Date Sent: Reference Number:
Inspector Name and Signature: Date:
State Storrnwaler Inspection Report, Version 3.0_3-09 Page 2 of 2

' •�• r
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
October 28, 2011
John D. Lennon
Previous Manager — Avenir Development, LLC
1437 Military Cutoff Road, Suite 201
Wilmington, NC 28403
Ph: 910-239-5895
Subject: NOTICE OF INSPECTION
Avenir
Stormwater Permit No. SW8 020406
New Hanover County
Dear Mr. Lennon:
Dee Freeman
Secretary
On October 5, 2011, Steve Pusey of the Wilmington Regional Office of the Division of Water Quality
(DWQ) inspected Avenir Subdivision in New Hanover County to determine compliance with Stormwater
Management Permit Number SW8 020406 issued on September 11, 2002. DWQ file review and site
inspection revealed that the site is not in compliance 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. - Submit an engineer's certification for the stormwater infiltration trench system.
2. Submit a copy of the recorded deed restrictions.
Once these issues have been resolved and the permit is deemed compliant, you can transfer the permit
to the new owner by completing the Name/Ownership Transfer form located at
http://portal.ncdenr.org/web/wg/ws/su/statesw/forms_docs.
Please inform this Office in writing before November 7, 2011 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, or to respond to this letter by the due date, 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 November 7, 2011, then DWQ staff will re -inspect the site and issue a Notice of
Violation if the listed deficiencies have not been addressed.
Please be reminded that if an ownership change, or a name change or a mailing address change has
occurred, it is your responsibility to submit a completed and signed Name/Ownership Change form to the
Division. Please include the name, mailing address and phone number of the party who is now
responsible for this permit. If you have any questions, please contact me at the Wilmington Regional
Office, telephone number [phone].
Sincerely,
Steve G. Pusey
Environmental Engineer
Enc: Compliance Inspection Report
GDSlsgp: S:1WQ&Stormwater\Permits & Projects120021020406 HD12011 10 CEI—deficient 020406
cc: Karen Higgins, WBS-CPU
CWiRO-SformwaferFil—e--3
DWQ Central -Files
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One 1
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748 North C aro/1 i na
Internet: www.ncwaterqualiry.org Naturalltf

Compliance Inspection Report
Permit: SW8020406 Effective: 09/11/02 Expiration: 09/11/12 Owner: Avenir Development LLC
Project: Avenir
County: New Hanover Masters Ln
Region: Wilmington
Wilmington NC 28403
Contact Person: Christopher G Yerkes Title: Manager Phone: [phone]
Directions to Project:
From intersection of Oleander Dr. (US Hwy 76) and Pine Grove Rd., drive Southeast on Pine Grove Rd. approximately 0.85 miles.
Take Greenville Loop Road East for 500 feet. Turn left onto Masters Lane. Site on right.
Type of Project: State Stormwater - Infiltration System
Drain Areas: 2 - (Hewletts Creek) (03-06-24 ) ( SA;HQW)
3 - (Hewletts Creek) (03-06-24 ) ( SA; HOW)
4 - (Hewletts Creek) (03-06-24 ) ( SA;HQW)
On -Site Representative(s):
Related Permits:
Inspection Date: 10t0512011 Entry Time: 11:00 AM Exit Time: 12:00 PM
Primary Inspector: Steven G Pusey Phone:
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Type: Transfer Renewal
Permit Inspection Type: State Stormwater
Facility Status: C3 Compliant ■ Not Compliant
Question Areas:
0 State Stormwater
(See attachment summary)
Page: 1

Permit: SW8020406 Owner - Project: Avenir Development LLC
Inspection Date: 10105/2011 Inspection Type: Transfer Renewal Reason for Visit: Routine
Inspection Summary:
The following items are needed to bring this permit into compliance:
1. Need engineer certification of stormwater infiltration trench system.
2. Need copy of recorded deed restrictions.
File Review
Yes No NA NE
Is the permit active?
■ ❑ ❑
❑
Signed copy of the Engineer's certification is in the file?
n moo
Signed copy of the Operation & Maintenance Agreement is in the file?
■ ❑ ❑
❑
Copy of the recorded deed restrictions is in the file?
❑ ■ ❑
❑
Comment: Need engineer certification of stormwater infiltration trench system.
Need copy of recorded deed restrictions.
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?
■ ❑ ❑
0
Comment:
SW Measures 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:
Operation and Maintenance Yes No NA NE
Are the SW measures being maintained and operated as per the permit requirements? ❑ ❑ ❑ ■
Are the SW BMP inspection and maintenance records complete and available for review or provided to DWO ❑ ❑ ❑
upon request?
Comment:
Page: 2

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■ Complete stems 1, 2, and 3. Also complete
item 4 If Restricted Delivery is desired.
■ Print your name and address on the reverse
so that we can return the card to you.
;• Attach tt card to the back of the mailpiece,
or on the front if space permits.
1. Article Addressed to:
Cahn�,Le-nr,pc)
A erl i r DG,?,r[o prn,r,+I LPL
i�3� Mf li +ary C,,+0-4 12�.
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2. Article Number
(Transfer from service kbeq
PS Form 3811, February 2004
A -
Agent / � U ❑ Agent
t ❑Addressee
B. Rr3celved by (Printed Name) C. Da ofpe livery
Jk.-&rl c;v� S. Aue;,fJ I /1 /
D. Is delivery address different from item 17 ❑ Yes
If YES, enter delivery address below: ❑ No
3. Wce Type
Certified Mail ❑ Express Mail
❑ Registered ❑ Return Receipt for Merchandise
❑ Insured Marl ❑ C.C.D.
4. Restricted Delivery? (Extra Fee) ❑ Yes
7008 1140 0002 9558 9575
Domestic Return Receipt
302s95-02-W154a

UNITED STATES POSTAL SERVICE
r.Pr-1
• Sender: Please print your name, address;`al
NC DENR - Divisiaa of Water Quality
Surface Wow haw ion Sactloo
127 Cardinal Drive Extension
Mariogtoo, NC 28405
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NC®ENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
December 9, 2011
CERTIFIED MAIL #7008 1140 0002 9558 9575
RETURN RECEIPT REQUESTED
John D. Lennon
Previous Manager — Avenir Development, LLC
1437 Military Cutoff Road, Suite 201
Wilmington, NC 28403
Ph: 910-239-5895
Subject: NOTICE OF VIOLATION, NOV-201 1 -PC-0624
Avenir
Stormwater Permit No. SW8 020406
New Hanover County
Dear Mr. Lennon:
On October 5, 2011, Wilmington Regional Office personnel performed a Compliance
Inspection and file review of the subject project, located at Masters Lane in Wilmington,
New Hanover County, North Carolina. The inspection was performed to determine the
status of compliance with Stormwater Permit Number SW8 020406, issued to you on
September 11, 2002.
The project has been found in violation of Stormwater Permit Number SW8 020406,
issued pursuant to the requirements of 15A NCAC 2H.1000. The violations found are:
Failure to certify the stormwater system. A file review revealed that this
office has not received a Designers Certificate.
Permit condition states that upon completion of construction, prior to issuance of a
Certificate of Occupancy, and prior to operation of this permitted facility, a certification
must be received from an appropriate designer for the system installed, certifying that
the permitted facility has been installed in accordance with this permit, the approved
' plans and specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A modification
may be required for those deviations.
2. Failure to maintain compliance with proposed built -upon area. A file
review revealed that the allowable built -upon area in the permit does not
match the allowable built -upon area in the recorded deed restrictions.
Permit condition states that the permittee must maintain compliance with the proposed
built -upon area and ensure that the runoff from all the built -upon area is directed into the
permitted system.
Wilmington Regional Office
127 Cardinal Drive Exlension, Wilmington, North Carolina 28405 On
Phone: [phone] FAX: [phone]Cc41 Customer Service: 1-877-623-6748 North Cartil j na
Internet: http://pertal.nodenr,org Naturally
An Equal Opportunity 1 Affirmative Artiou E+aplayer

December 9, 2011
Avenir
Stormwater Permit No. SW8 020406
To correct these violations you must:
1. Provide a written "Plan of Action" which outlines the actions you will lake
to correct the violation(s) and a time frame for completion of those actions,
within thirty (30) days of receipt of this Notification.
2. Submit the required Designers Certificate.
3. Submit records proving that the allowable built -upon area (BUA) of 3,000
square feet per lot (as stated in the permit) has not been exceeded, and
proving that the BUA for each infiltration trench has not been exceeded.
Failure to provide the "Plan of Action" within thirty (30) days of receipt of this
Notification, or to correct the violations by the date designated in the "Plan of Action",
are considered violations of 15A NCAC 2H.1000, and may result in the initiation of
enforcement action which may include recommendations for the assessment of civil
penalties, pursuant to NCGS 143-215.6A.
By copy of this letter to the New Hanover County Building Inspector, this Office is
requesting that the Building Inspector consider withholding building permits and
Certificates of Occupancy for this project until this matter is satisfactorily resolved.
If you have any questions concerning this matter, please call Steve Pusey at 910-796-
7334.
Sincerely,
k51-
Georgette Cott
Stormwater Supervisor
Division of Water Quality
GDSlsgp: S:IWQSIStormwater\Permits & Projects120021020406 HD12011 12 NOV 020406
cc: Phil Tripp, PE -- Tripp Engineering, PC
New Hanover County Building Inspections
Karen Higgins, WBS-CPU
Georgette Scott
WiRO Stormwater File '
DWQ Central Files
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P,i,',c 2 of 2

December 9, 2011
Avenir
Stormwater Permit No. SWS 020406
Certification Requirements:
Page 2of2
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. The outlet/bypass structure elevations are per the approved plan.
.5. The outlet structure is located per the approved plans.
6. Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
10. The permitted amounts of surface area and/or volume have been
provided.
11. Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided.
_ 13. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
14. The dimensions of the system, as shown on the approved plans, are
provided.
CC' NCDENR-DWQ
New Hanover County Building Inspections
Page 4 of 4

Dezember 9, 2011
Avenir
Stormwater Permit No. SW8 020406
Avenir Page 1 of 2
New Hanover County
Stormwater Project No. SW8 020406
Designer's Certification!
I, , as a duly registered in
the State of North Carolina, having been authorized to observe (periodically 1 weekly 1
full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
Required Items to be checked for this certification to be considered complete are on
page 2 of this form.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
Page 3 of 4

916/2002 AVENIR 01090
CDC Infiltration Trench NO 3
10-year Storm
WATERSHED DATA
Total Drainage Area
s , ft,
acres
141,134
3.24
Impervious Area
Land Use
s , ft.
I acres
buildings
36,000
0.83
arkin las halt
13,520
0.31
concrete
14,047
0.32
Total
63,567
1.46
State Volume Reouirement for Storage of first 1" runoff:
Vol. = ((1.5112) x (❑A) x (% imp.)] +
((1.5f12) x (DA) x (1-% imp.) x C]
C = 0.2
V= 9,885 cu. ft.
INFILTRATION SYSTEM:
Volume of first inch and one half of runoff = (impervious area)1.5112
V= 9,885 cu-ft
Volume of pipe provded= Area x Length
VpipeV'= 117.00 cu-ft
Vpipel2"= 354.00 cu-ft
Volume of trench provided= (LxWxD) - total pipe volume
Vtp= 31,309.00 cu-ft
Storage volume provided= (Vtp • 0.40) + total pipe volume
Vp= 12,994.60 cu-ft
DRAWDOWN TIME:
Depth of infiltration system:
D= 4 ft.
Infiltration Rate of soils:
R= 2 in/hr
Drawdown time:
DDT= 24 hrs.
RECEIVED
SEP 0 6 2002
DWQ
PROJ # SW OZO 40(o
a SE
40
% impervious = 0.450
= 45.0%
say 45.0%
CPRE = 0.25
CPOST = (% imp.)(.95)+(1-% imp.)(.25)
- 0.57
110 = 7.23 inlhr
125 = 8.15 inlhr
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r
7/17/2002
CDC
WATERSHED DATA
Total Drainage Area
s . ft. as
30,566 0.70
AVENIR
Infiltration Trench NO 2
10-year Storm
Impervious Area
Land Use
s . ft.
acres
buildings
6,000
0.14
arkin las halt
1,022
0.02
concrete
2,873
0.07
Total
9,895
0.23
State Volume Reauirement for Storaae of first 1" runoff:
Vol. _ ((1.5i12) x (DA) x (°% imp.)] +
;(1.5P12) x (DA) x (1-% imp.) x C]
C = 0.2
V= 1,754 cu. ft.
INFILTRATION SYSTEM:
of first inch and one half of runoff = (impervious area)1.5112
V= 1,754 cu-ft
Volume of pipe provided= Area x Length
Vpipe8"= 38.49 cu-ft
Vpipel2"= 76.94 cu-ft
Volume of trench provided= (LxWXD) - total pipe volume
Vtp= 6,365,00 cu-ft
Storage volume provided= (Vtp ' a.a0) + total pipe volume
Vp= 2,661,43 cu-ft
DRAWDOWN TIME:
Depth of infiltration system:
D= 4 ft.
ln6ltrad'on Rate of soils:
R= 2 inlhr
Drawdown time:
DDT= 24 hrs.
% impervious = 0.324
= 32.4°%
say 33.0%
CPRE = 0.25
CPOST = (°% imp.)(.95)+(1-% irrp.)(25)
0.48
110 = 7,23 inlhr
125 = 8.15 inlhr
01090

711712002 AVENIR 00072
CDC Infiltration Trench NO 1
10-year Storm
WATERSHED DATA
Total Drainage Area
s . ft.
acres
23,843
0.55
Impervious Area
Land Use
s . ft.
I acres
buildings
6,000
0.14
arkin las halt
4,024
0.09
concrete
2,462
0.06
Total
12,486
0.29
State Volume Recuirement for Storage of first 1" runoff
Vol. = [(1.5/12) x (DA) x (°% imp.)] +
1(1.5112) x (DA) x (1-0% imp.) x C]
C = 0.2
V= 1,845 cu. ft.
INFILTRATION SYSTEM:
°% impervious = 0.524
= 52.4%
say 51.0%
CPRE = 0.25
CPOST = (°% imp.)(.95)+(1-°% imp.)(.25)
0.62
110 = 7,23 inlhr
l25 = 8.15 inlhr
Volume of first inch and one half of runoff = (impervious area)1,5112
V= 'I'm cu-ft
Volume of pipe provided= Area x Length
VpipeB"= 42.00 cu-ft
Vpipel2"= 43,20 cu-ft
Volume of trench provided= (LxWxD) - total pipe volume
Vtp= 6,415.00 cu-ft
Storage volume provided= (Vtp ' 0.40) + total pipe volume
Vp= 2,551.20 cu-ft
DRAWDOWN TIME:
Depth of infiltration system;
D= 4 ft. = 48 ti
Infiltration Rate of soils:
R= 2 inlhr
Drawdown time: �� j
❑DT= 24 hrs. %+, Z" j{1i-
RECEINIED
JUL 18 2002
DWQ
PROd # 15 ZU4CXA
X01CARD(�
Q SEAL 4r �.
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