SW8990126_COMPLIANCE_19990601

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW ke�(1Gi%,.G
DOC TYPE
El CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

Compliance Inspection Report
Permit: SW8990126 Effective: 06/01/99 Expiration:
County: Brunswick
Region: Wilmington
Contact Person: Peter Brennan Title: President
Directions to Project:
Type of Project: State Stormwater - HD - Detention Pond
Drain Areas:
On -Site Representative(s):
Related Permits:
Inspection Date: 02/2112011 Entry Time: 02:15 PM
Primary Inspector: Angela K Hammers
Secondary Inspector(s):
Reason for Inspection: Routine
Permit Inspection Type: State Stormwater
Facility Status: ❑ Compliant ■ Not Compliant
Question Areas:
State Stormwater
(See attachment summary) .
Owner: Alltek Inc
Project: Alltek
Exit Time: 02A0 PM
Phone:
Phone: [phone]
Ext.7317
Inspection Type: Compliance Evaluation
Page: 1

Permit: SW8990126 Owner - Project: Alltek Inc
Inspection Date: 02/21/2011 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
On July 22, 2010 a Notice of Violation was issued and sent to the Permittee for Failure to Certify the Stormwater System
and Failure to Maintain the system. On November 8, 2010 a Notice of Inspection was written and sent to the Permittee
stating that woody vegetation along the pond slopes had been removed and erosive areas of the system had been
repaired, however, a certification of the stormwater system had not yet been received.
As of February 21, 2011, a copy of an engineer's certification has not been received by DWQ.
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 rile?
Copy of the recorded deed restrictions is in the file?
Comment: A copy of the PE was not found in the file.
Page: 2

NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
November 8, 2010
Mr. Peter M. Brennan, President
Alltek, Inc.
2110 Moon Station Dr.
Kennesaw, GA 30144
Division of Water Quality
Coleen H. Sullins
Director
Subject: NOTICE OF INSPECTION
Alltek
Permit No. SW8 990126
Brunswick County
Dear Mr. Brennan and Mr. Rosas:
Mr. Vladimir Rosas
Alltek, Inc.
2155 Enterprise Blvd. NE
Leland, NC 28451
Dee Freeman
Secretary
On October 26, 2010, Angela Hammers of the Wilmington Regional Office of the
Division of Water Quality (DWQ) inspected Alltek in Leland, Brunswick County to
determine compliance with Stormwater Management Permit Number SW8 990126
issued on June 1, 1999. DWQ file review and site inspection revealed that.the site is
not compliant with the terms and conditions of this permit and remains under a Notice of
Violation (NOV-2009-PC-0690) issued on July 22, 2010. Please find a copy of the
completed form entitled "Compliance Inspection Report" attached to this letter, which
summarizes thefindings of the recent inspection.
As indicated in.the attached inspection report, the following deficiencies must be
resolved:
1. Submit an engineer's certification of the stormwater system to this office.
It is noted that vegetation has been removed from the pond slopes and forebay berms
as requested. In addition to the above certification, please submit the following:
A request for acceptance of the permit extension (SL2009-406) or a
complete renewal application package.
A request to transfer ownership of the permit as needed.
Please inform this Office in writing before December 9 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 December 9, 2010 then DWQ staff will re-
inspect the site and issue a Notice of Violation with a recommendation for enforcement
if the listed deficiencies have not been addressed.
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One I, 1
Phone: [phone] FAX: [phone] Customer Service: 1-877-M-6748 Nort l Carol l na
Internet: www.ncwaterquality.org Amin //, ,
An Equal Opportunity 1 Affirmative Action Employer I [[ "J

Mr. Peter Brennan & Mr. Vladimir Rosas
Alltek
Stormwater Permit No. SW8 990126
Please be reminded that if any ownership or name change has occurred it is the
permittees' responsibility to notify this office in writing. If you have any questions please
contact me at the Wilmington Regional Office, telephone number [phone].
Sincerely,
Angela Hammers
Environmental Specialist
Enclosure: Compliance Inspection Report
Copy of Notice of Violation (NOV-2009-PC-0690)
GDSlakh: S:IWQSISTORMWATERIINSPECT1990126.nov10
cc: John Hennessy-NPS-ACOU
Georgette Scott
Phil Norris, PE (Andrew & Kuske)
WiRO Files
Page 2 of

Compliance Inspection Report
Permit: SW8990126 Effective: 06/01/99 Expiration:
County: Brunswick
Region: Wilmington
Contact Person: Peter Brennan Title: President
Directions to Project.
Type of Project: State Stormwater - HO - Detention Pond
Drain Areas:
On -Site Representative(s):
Related Permits:
Inspection Date: 1012612010 Entry Time: 02:15 PM
Primary inspector: Angela K Hammers
Secondary Inspector(s):
Reason for Inspection: Follow-up
Permit Inspection Type: State Stormwater
Facility Status: I] Compliant ■ Not Compliant
Question Areas:
■ State Stormwater
(See attachment summary)
Owner: Alltek Inc
Project: Alltek
Exit Time: 02:45 PM
Phone:
Phone: [phone]
Ext.7317
Inspection Type: Compliance Evaluation
Page: 1

Permit: SW8990126 Owner - Project: Alltek Inc
Inspection Date: 10126/2010 Inspection Type: Compliance Evaluation Reason for Visit: follow-up
Inspection Summary:
The following deficiencies were noted during the inspection:
1. A PE Certification has not been received by this Office.
2. Documentation of the verification of the depth of the ponds has not been received by this office.
To bring this system into compliance, the following must be completed;
1. Submit a PE Certification of the stormwater system to this office.
2. Submit documentation of the depths of the ponds to this office.
Please note this permit is under Notice of Violation, NOV-2009-PC-0690. Please complete the above listed deficiencies
to bring this permit into compliance.
Also,note that this permit was stated as expiring on June 1, 2009.
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: A PE certification has not been received by this Office.
Operation and Maintenance
Are the SW measures being maintained and operated as per the permit requirements?
Yes No NA NE
■ ❑ ❑ ❑
❑ 0 ❑ ❑
■ ❑ ❑ ❑
❑ ❑ Y ❑
Yes No NA NC
❑ ■ Q ❑
Are the SW BMP inspection and maintenance records complete and available for review or provided to OWQ ❑ ❑ ❑ i
upon request?
Comment: It was observed that woody vegetation along. the pond banks has been
removed; eroded areas have been revegetated. The depth of the ponds has not been
verified.
Page: 2

Compliance Inspection Report
Permit: SW8990126 Effective: 06/01/99 Expiration
County: Brunswick
Region: Wilmington
Contact Person: Peter Brennan Title: President
Directions to Project:
Type of Project: State Stormwater - HD - Detention Pond
Drain Areas:
On -Site Representative(s):
Related Permits:
Inspection Date: 07113/2010 Entry Time: 12:15 PM
Primary Inspector: Angela K Hammers
Secondary Inspoctor(s):
Reason for Inspection: Routine
Permit Inspection Type: State Stormwater
Facility Status: ❑ Compliant ■ Not Compliant
Question Areas:
State Stormwater
(See attachment summary)
Owner: Alltek Inc
Project: Alltek
Exit Time: 12:45 PM
Phone:
Phone: [phone]
Ext.7317
Inspection Type: Compliance Evaluation
Page: 1

Permit: SW8990126 Owner - Project: Alltek Inc
Inspection pate: 07/13/2010 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
The following deficiencies were noted during the inspection:
1. This permit has expired as of .June 1, 2009.
2. No PE certification was found in the file.
3. There was a lack of maintenance of the stormwater system.
To bring this system into compliance, the following must be completed:
1. Submit either a renewal application package (application, processing fee) or a written request to
SL2009-406 Permit Extension with an extended expiration date of June 1, 2012,
2. Submit a PE Certification for the stormwater system to this office.
3. Maintain the stormwater system to include:
Removal of woody vegetation from the forebay berms
Verify the depth of the ponds
Repair and/or re -vegetate all eroded areas
4. It is the responsibility of the Permittee to request a change of ownership as needed.
This permit is under continued Notice of Violation. The above deficiencies must be corrected.
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: Permit expired on June 1, 2009. No PE certification was found in the file.
Operation and -Maintenance
Are the SW measures being maintained and operated as per the permit requirements?
accept the
Yes No NA NE
■ ❑ ❑ ❑
❑■00
i ❑ ❑ ❑
❑ ❑ ■ ❑
V— kfn AIA NF
0■❑❑
Are the SW BMP inspection and maintenance records complete and available for review or provided to DWQ ❑ 0 ❑ v
upon request? '
Comment: Woody vegetation observed on the forebay berm of Pond #2 (North side of
property). Woody vegetation observed on the forebay berm and in front of outlet of
Pond #1 (East side of property - front pond). Some vegetation observed within basin of
Pond #1.
Page: 2

A&K1198236
Permit No. 5 w8 9 9 0/ a c�
(to he provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
I. PROJECT INFORMATION (please complete the following information):
Project Name:
Contact Person:
Alltek
Peter Brennan
Phone Number: ( 1-800 ) 334-9259
For projects with multiple basins, specify which basin this worksheet applies to
#1
Basin Bottom Elevation
51.0
ft.
(average elevation of the floor of the basin)
Permanent Pool Elevation
55.0
ft.
(elevation of the orifice)
Temporary Pool Elevation
56.0
ft.
(Elevation of the discharge structure overflow)
Permanent Pool Surface Area
8,020
sq. ft.
(water surface area at the orifice elevation)
Drainage Area
3.6
ac.
(on -site and oil site drainage to the basin)
Impervious Area
1.8
ac.
(on -site and off -site drainage to the basin)
Permanent Pool Volume
13,778
cu. ft.
(combined volume of main basin and forebay)
Temporary Pool Volume
8,530
cu. ft.
(volume detained above the permanent pool)
Forebay Volume
3,400 _
cu, ft.
SA/DA1 used
0.043
(surface area to drainage area ratio)
Diameter of Orifice
1.5
in.
Design TSS Removal
90
%
(85% TSS removal required, see item k below)
H. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(N.C. Department of Environment, Health and Natural Resources, November 1995) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Form SWU-102 Rev 1/August 1998 Page 1 of 3

a. The temoorary pool controls runoff from the 1 inch storm event
b. The basin lenuth to width ratio is t-=reater than 3: 1.
c. The basin side slopes above the permanent pool are no steeper than 3:1.
d. A submersed and vegetated perimeter shelf at less than & 1 is provided (show detail i.
e. Veaetation above the nermanent pool elevation is specified.
f. An emerLencv drain is provided to empty the basin.
t7. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
h. The temoorary pool draws down in 2 to 5 days.
i. A trash rack is provided for both the overflow and orifice.
i. The forebav volume is anoroximately equal to 20% of the total basin volume.
k. Sediment storaee is provided in the permanent pool.
1 A 10-fnnt vPaPtntivP GltPr is nrnviriivi at the nntlPt2 (inAiriP Prn6vP flnru ralrnlatinncl
m. Recorded drainage easement for each basin includin z access to nearest riLht-of-wav
n. A site snecific operation and maintenance (OM plan is provided.
o. A vep-etation manasement/mowinL schedule is provided in the O&M plan.
D. Semi-annual inspections are snecified in the O&M plan.
a. A debris check to be performed after every storm event is specified in the O&Nl elan.
r. Snecific clean -out benchmarks are snecified in the O&M plan (elevation or depth).
c A lPaally rPcnnn6h1P narty is rlacianntPrl in the C)kMt nlan3 (inrhiriP name and titlpl
t. if the basin is used for sediment and erosion control durint? construction. clean out of the.
basin is specified to be performed prior to use as a wet detention basin.
Footnotes:
lWhen using the Division SAIDA table, the correct SAIDA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Lincar interpolation should be employed to determine the correct N aluc for non-
standard table entries.
2The requirement for a vegetative filter may be waivcd if the %%et detention basin is designed to meet 90% TSS removal,
3The legally responsible party should not be a homeo%�-ners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
111. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, forebav, non-integrated pretreatment
Systems (pretreatment other than forebays), and the vegetated filter if one is provided.
This system (check one) [Idoes ® does not incorporate a vegetated filter.
This system (clreck one) ❑ does ® does not incorporate non-integrated pretreatment.
.Nlaintenance activities shall be perform as follows:
1. :after every significant runoff' producing rainfall event and at least monthly:
Form SWU-102 Rev 1/August 1998 Page 2 of 3

,R 4
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, grass
cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth. Removed sediment shall be disposed of in an appropriate
manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a
wet detention basin or stream, etc.).
The original design depth is: 4 feet
The sediment removal benchmark depth is: 3 feet
5. Remove cattails and other indigenous wetland plants when they cover 75% of the basin surface. These
plants shall be encouraged to grow along the basin perimeter.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the above
maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of the
project, responsible party, or address.
Print name:
Address:
Phone. -
Title:
Signature:
Date:
Peter M. Brennan
2110 Moon Station Drive, Kennesaw, GA 30144
1-800-334-9259
1, , QY; a `�'Y� , �i D ��yn a r , a Notary Public for the State of 'V\ D r k CoL wo ; v, a..
County of `new a V% v r , do hereby certify that pe+-{ r YV\ (� r-e m H a ri
personally appeared before me this 15 day of jc n �a r•{ , 19 qcj , and acknowledge the
due execution of the forgoing infiltration system maintenance requirements. _)X4&vdt&y hand and official seal,
My c4inmission expires 7.2 te- -100-2-
Form SWU-102 Rev 1/August 1998 Page 3 of 3
,P W C4
SEAL IF r VOjA RY.
s PtJBLI G 4�
a CO'��'

State Storinwater Management Systems
Permit No. SW8 990126
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name:
Alltek
Permit Number.
SW8 990126
Location:
Brunswick County
Applicant:
Mr, Peter M. Brennan, President
Mailing Address:
Alltek, [tic.
2110 Moon Station Drive
Kennesaw, GA 30144
Application Date:
January 19, 1999
Water Body Receiving Stormwater Rtmoff:
Banton Branch (CFR 18-77-1-1-2)
Classification of Water Body:
"C Sw"
POND 1 POND 2
Pond Depth, feet:
4 5
Permanent Pool Elevation. FMSL:
55 56
Total Impervious Surfaces, ft-:
78,500 114,781
Future, ft':
0 114,781
Offsite Area entering Pond, ft':
None, per Engineer
Required Surface Area, ft':
6,751 8,237
Provided Surface Area, ft':
8,020 10,890
Required Storage Volume, ft':
6,542 9,171
Provided Storage Volume, W:
8,530 11,485
Temporary Storage Elevation, FMSL:
56 57
Controlling Orifice:
1.5" (� pipe
9

State Stormwater Management Systems
Permit No. SWS 990126
I1. SCHEDULE OF COMPLIANCE
The stormwater management system sliall be constructed in it's entirety, vegetated and operational for its intended
use prior to the construction of any built -upon surface except roads.
During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired
immediately.
The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater
system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its
entirety and maintenance must occur at the scheduled intervals including, but not fimited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas.
C. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogginb of outlet structure, orifice device and catch basins and piping.
9. Access to the outlet structure must be available at all times.
Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ.
The records will indicate the date, activity, name of person performing the work and what actions were taken.
Decorative. spray fountains will not be allowed in the stormwater treatment system.
The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless the
facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and
other supporting data.
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 copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten
years from the date of the completion of construction.
9. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities shall be
granted in favor of the permittee if access to the stortwater facilities will be restricted by the sale of any portion of
the property.
10. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built -upon
area. Prior to the sale of any portion of this project, the permittee must notify DWQ, and provide the name, mailing
address and phone number of the buyer. Additional requirements may apply to both parties.
11. The runoff from all built -upon area on the project must be directed into the permitted stormwater control system.
12. if the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to
operation as a stormwater treatment device, and prior to occupancy of the facility.
4

Compliance Inspection Report
Permit: SW8990126 Effective: 06/01/99 Expiration:
County: Brunswick
Region: Wilmington
Contact Person: Peter Brennan Title: President
Directions to Project:
Type of Project: State Stormwater - HD - Detention Pond
Drain Areas:
On -Site Representative(s):
Related Permits:
Inspection Date: 0810612009 Entry Time: 09:50 AM
Primary Inspector: David W Cox
Secondary Inspector(s):
Reason for Inspection: Routine
Permit Inspection Type: State Stormwater
Facility Status: ❑ Compliant ■ Not Compliant
Question Areas:
® State Stormwater
(See attachment summary)
Owner: Alltek Inc
Project: Alltek
Exit Time: 10:00 AM
Phone:
Phone: [phone]
Inspection Type: Stormwater
Page: 1

Permit: SW8990126 Owner - Project: Alltek Inc
Inspection hate: 08/06/2009 Inspection Type: Stormwater
Inspection Summary:
In order to bring this state stormwater permit into compliance you must provide the following:
1. A renewal application and the $505.00 renewal fee.
2. Provide the required Engineers Certification.
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:
1. Permit expired on June 1, 2009.
2. This office has not received the Engineer's Certification
Reason for Visit: Routine
Page: 2

A&K#98236
Permit No. SC-08 9 90 a Lp
(to be provided by DWo
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
'Phis form may he photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
I. PROJECT INFORMATION (please complete the following information):
Project Name: AlItek
Contact Person: Peter Brennan Phone Number: ( 1-800) 334-9259
For projects with multiple basins, specify which basin this worksheet applies to: #2
Basin Bottom Elevation
51.0
ft.
Permanent Pool Elevation
56.0
ft.
Temporary Pool Elevation
57.0
ft.
Permanent Pool Surface Area
10,890
sq. ft.
Drainage Area
3.1
ac.
Impervious Area
2.63
ac.
Permanent Pool Volume
26,725
cu. ft.
Temporary Pool Volume
11,485
cu. ft.
Forebay Volume
5,770
cu. ft.
SA/DA1 used
0.061
Diameter of Orifice
1.5
in.
Design TSS Removal
90
%
II. REQUIRED ITEMS CHECKLIST
(average elevation of the floor of the basin)
(elevation of the orifice)
(Elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(surface area to drainage area ratio)
(85% TSS removal required, see item k below)
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(N.C. Department of Environment, Health and Natural Resources, November 1995) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached, If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Form SWU-102 Rev UAugust 1998 Page 1 of 3

a. The temgorary pool controls runofffrom the 1 inch storm event.
b. The basin lenuth to width ratio is ureater than 3.1.
c. The basin side slopes above the nermanent nool are no steeper than 3 1
d, A submerued and vetetated perimeter shelf at less than 6 1 is provided (show detail),
e. VeBetatlon above the permanent pool elevation is snecified.
f' An emerp-encv drain is provided to ernoty the basin.
e. The nermanent pool denth is between 3 and 6 feet freouired minimum of feet).
h. The temporary pool draws down in 2 to 5 days.
i, A trash rack is provided for both the overflow and orifice.
i, The forebav volume is aoproximateiv eaual to 20% of the total basin volume.
k. Sediment storage is provided in the nermanent pool.
1 A 10-fnnt vPaPtntiva filtar is nrnvirlPri nt the rritlPt2 (Inr.hirlP PrncivP flrnv rnlriilntinnO
m. Recorded drainaee easement for each basin includine access to nearest right-of-way.
n. A site specific operation and maintenance (O&NI) plan is provided.
o. A veeetation manaeement/mowing schedule is nrovided in the 0&%1 elan
p. Semi-annual insnections are snecified in the O&M plan.
o. A debris check to be performed after every storm event is specified in the O&.%1 plan
r. Soeciftc clean -out benchmarks are specified in the O&M elan (elevation or denth).
c A iPanliv rPcnnn¢ihlP narty is r1p6onntPri in the (,)k 1 ninn3 (inrhiriP name nnri titlPl
t. If the basin is used for sediment and erosion control durine construction_ clean out of the
basin is snecified to be nerformed prior to use as a wet detention basin.
Footnotes:
l when using the Division SA/DA table. the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
2The requirement for a vegetative filter may be waived if the lvct detention basin is designed to meet 90% TSS removal.
3The legally responsible park- should not be a homcoivners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin forebav, non-integrated pretreatment
systems (pretreatment other than forebays), and the vegetated filter if one is provided.
This system (check one) ❑ does ® does not incorporate a vegetated fiiter.
This system (check one) ❑ does ® does not incorporate non-integrated pretreatment.
Maintenance activities shall be perform as follows:
l , After every significant runoff producing rainfall event and at least monthly,
Form SWU-102 Rev IlAugust 1998 Page 2 of 3

a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, grass
cover, and general condition.
b, Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth. Removed sediment shall be disposed of in an apppropriate
manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a
wet detention basin or stream, etc.).
The original design depth is: 5 feet
The sediment removal benchmark depth is: 3.75 feet
5. Remove cattails and other indigenous wetland plants when they cover 75% of the basin surface. These
plants shall be encouraged to grow along the basin perimeter.
6. if the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
7. All components of the wet detention basin system shall be maintained in good working order
I acknowledge and agree by my signature below that I am responsible for the performance of the above
maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of the
project, responsible party, or address.
Print name:
Address:
Phone:
Title:
Signature:
Date:
Peter M. Brennan
2110 Moon Station Drive, Kennesaw, GA 30144
1-800-334-9259
1, �. -Qri 0. `N . CO JRrhA,n , a NotaryPublic for the State of `11ar' -k arD I; �► Countyof " o_w go„noq-C,r , do hereby certify that pe+trr `M Y) n c► In
personally appeared before me this _15 day of ,�AN �a r�1 , 19 J6_ , and acknowledge the
due execution of the forgoing infiltration system maintenance requirements. Witness my hand and official seal,
My commission &pires
Form SWU-lot Rev 1/August 1998 Page 3 of 3
IA. COV
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