SW3170303 (2)

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Allen Storage Center Midland A
C?. Midland, NC CABARRUS County �� �J
Samuel J Smith, PE, Chambers Engineering, PA NCDENR
Application
Type of application: New Permit
Only complete application packages will be accepted and reviewed.A complete package includes all of the items in the checklist
below.Add any comments,and indicate the page or plan sheet number where the following information can be found.Please
indicate that you have provided the following required information by initialing in the space provided next to each item.
Part I:Submittal Checklist
Item Notes/Comments Initials
1 Original and one copy of this application form(all worksheets)and the permit SJS
application fee For applications submitted to the DEMLR regular permitting
program,the fee is$505 payable to NCDENR For Express Review,click on the
link below for information and fee schedule Contact the appropriate regional ���
office Express Review Coordinator to schedule the required pre-application
meeting �V�( .V`_1 1
Click here for Express Permitting info
2 A USGS map identifying the site location If the receiving stream is reported as �.VV 11 SJS
class SA or the receiving stream drains to and is within 1/2 mile of SA waters,
then include the 1/2 mile radius on the map
3 A copy of the most current property deed j\ SJS
4 Two copies of additional calculations(as needed) Sealed,signed and dated SJS
5 Two sets of sealed,signed,&dated full-sized plans of the entire site at a SJS
readable scale,including
a Project name,engineer and firm,revision number and dates. All Sheets SJS
b Location map with street names and SR numbers,legend,north arrow, GO 1 SJS
scale
c Dimensioned property/project boundary with bearings&distances C2 0 SJS
d.The boundaries of all surface waters,regulatory flood zones,and protected Note on C3.1 SJS
riparian buffers or a note on the plans that none exist.
e The boundaries of all vegetated or protected riparian buffers NA SJS
f Site layout showing all built-upon areas,drainage features,stormwater C2 0&C3 0 SJS
collection systems(inlets,outlets,swales,pipe elevations,slopes and
diameters),and SCMs at ultimate build-out.
g Existing contours,proposed contours,spot elevations,and finished floor C3 0 SJS
elevations
h Existing drainage(including off-site),drainage easements,pipe sizes, C3 0 SJS
runoff calculations
i Drainage area boundaries(included in the main set of plans,not as a C3 1 SJS
separate document)
j Existing and proposed maintenance access routes,utility easements, C3 0&CD8 SJS
drainage easements,public rights-of-way etc
k A construction sequence that shows how the SCMs will be protected from C5 0 SJS
sediment until the entire drainage area is stabilized
6 Two sets of sealed,signed,&dated full-sized plan details of each SCM(or SJS
typical if appropriate)in both plan view and cross-section at a scale of 1"=30'or
larger,including
a Dimensions,side slopes,length to width ratios and elevations with a CD8 SJS
benchmark for clean-out if appropriate
b.All applicable conveyance devices,including bypass structure, CD8&CD9 SJS
pretreatment area,flow distribution device,underdrains,outlet device,outlet
dissipater and level spreader
c.A table of elevations,incremental volumes and accumulated volumes(if C5.0 SJS
applicable)
d Specifications for applicable materials,such as planting media,aggregate, CD8&CD9 SJS
sod,underdrains,outlet devices,etc.
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I
7 Two sealed,signed,&dated planting plans for each SCM(or typical)at a scale SJS
of 1"=20'or larger,as applicable,including
a The locations of each species and a planting detail CD8 SJS
b A table summarizing the size,spacing and total quantity of each plant CD9 SJS
species that should be used
c The source nursery for the plants TBD SJS
d A one-time fertilizer specification to establish plants if necessary CD6 SJS
8 A soils report based on field evaluation indicating the SHWf elevations within NA,pond liner used NRCS Soil
the footprints of the proposed SCM(s) Provide a map of the boring locations Report in Calc Package
with the existing elevations and boring logs For infiltration SCMs,the report
shall include the soil type,infiltration rate and method for determining the
infiltration rate Soils information shall be signed and sealed by a licensed soil
scientist
9 A copy of the signed and notarized operation and maintenance(0&M) SJS
agreement
10 A copy of the proposed deed restrictions protecting the SCMs and limiting the SJS
built-upon area so that it does not exceed the capacity of the SCM(s)or the high
density threshold(as applicable)
NCDENR Deed Restriction Forms
11 For corporations and limited liability corporations(LLC)*Documentation from the SJS
NC Secretary of State or other official documentation,which supports the titles
and positions held by the persons listed in the Contact Information section The
corporation or LLC must be listed as an active corporation in good standing with
the NC Secretary of State,otherwise the application will be returned
NC Dept of the Secretary of State
12 A copy of the lease agreement or pending sales agreement if applicable. NA
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Version 1 4 Application Page 2 of 4

Part II:General Project and Applicant Information
Project Name: Allen Storage Center Midland Date:
•
Project Street Address NC Hwy 24/27 Lat
City Midland Zip 28128 Long•
Directions to Project. County CABARRUS
(from nearest intersection) NON-COASTAL
Project Applicant:
(Identify the corporation,organization,property owner,designated
government official,etc.which owns the project.)
Owner/Signing Officals Name: Rick Allen ^ C �1 (i0(' L
Title: Owner /l
CZ
Address 411 N Central Ave
City Locust
State. NC
Zip 28097
Phone [phone]
Fax
Email asc3@bellsouth net
Status of applicant: Owner
River Basin Yadkin
Receiving Stream(s) Rocky River
Stream Class(es). C
Surface Water Area(ac) NA Coastal wetland area(ac) NA
Total property area(ac) 13.44 Total project area(ac) 13 44
Goals/characteristics Volume Matching(LID) Drains to an offsite stormwater system
Low Density Within 575'of Saltwater ORW
YES High Density Within 5 miles of a public airport
Briefly summarize how the stormwater runoff will be treated
Stormwater runoff will be treated by a wet pond BMP The pond has been designed to capture runoff from all impervious
areas
Part III: Permit Information
Status of construction' Not Started
Other permits needed' YES Sedimentation&erosion control NO 404 Permit/401 Certification
NO CAMA Major Permit NO Isolated Wetlands Permit
NO Threatened&Endangered Species NO NPDES Industrial Stormwater Permit
If an application for this project has been previously returned,provide the original project number and previous name of the project
Provide the permit type,number and issue date for any permits that have already been obtained for this project
Sediment/Erosion Control Allen Storage Centers-Midland/CABAR-2017-060,2/28/2017
If claiming vested rights,then identify(and attach)the supporting documents and approval dates
Approval of a site-specific development plan or PUD Approval date.
Valid building permit Issue date
Other Date.
Not Started
Point of Contact Phone number.
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Version 1 4 Application Page 3 of 4

Part IV:Additional Contact Information
(Optional) Additional Contact
Person/Orginization
Signing Official&Title-
Street address
City,State,Zip.
Phone number(s).
Email
(Note:Person/Organization noted above maybe contacted for additional project information if applicant
cannot be reached.)
Part V:Consultant Information
Complete this section if you wish to designate authority to another individual or firm so that they may provide information on your
behalf for this project(such as addressing requests for additional information).
Consultant Samuel J Smith,PE
Firm Chambers Engineering,PA
Street address. 129 N First Street
City,State,Zip Albemarle,NC 28001
Phone number(s). 704-984-6427
Email ssmithce-pa corn
Part VI: Property Owner I Applicant Certification
I,(the Owner&Applicant listed above), Rick Allen ,certify that the information included
on this permit applicant form is,to the best of my knowledge,correct and that the project will be constructed in conformance with the approved
plans,that the required deed restrictusion and protective covenants will be recorded,and that the proposed project complies with the
requirements of the applicable state stormwater rules and requirements
DIPS4,4,4.71:1C
Signature'�g & Sim Date ) t li 7
I, 0.40 L�"l kf.L l� — VC f ,a Notary Public for he State of t\--‘OG (t (_ro(VLA
County of ,do hearby certify that IAA Ui5 )c \-P_ U 'UL.
personally appeared before me this '))w day of c3a(u-(0..,`'1A , 9(-1
and acknowledge the due execution of thp.,applicapon for a stprmwater3ermit.
Witness my hand and official seal, PLIA j7i.61 f4---41366..--
,000000680,000
(-rt--rt_,00000061°p0®
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NOTARY • ,n E�
My commission expires y `(LANA_ 11"J /O� Cl
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°°0°a°°o°�000000
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Version 1.4 Application Page 4 of 4

f
/ Allen Storage Center Midland
A
Storm ° /��
`i Midland,NC CABARRUS County �r
NCDENR
RAINFALL&CALCULATION DATA •
Project County. CABARRUS
Project City Midland
Rainfall Source Charlotte
Storm Event Depth
(inches)
First Flush/WQV 1 00
NINON'_,a 1 40
Loaded Rainfall: Charlotte P95 1 86
Design Storm. P90 1-yr,24-hr 2 78
Calculation Method Discrete SCS Method, 2-yr,24-hr 3 36
Pre-Post 10-yr,24-hr 4 89
(Minimum Design Storm=P90 for non-SA, 1-yr,24-hr for SA) 25-yr,24-hr 5 80
50-yr,24-hr 6 53
NOTE Please use the Storm-EZ calculation sheets to document the stormwater design 100-yr,24-hr 7 27
and create the O&M Agreement Highlighted Storm is Design Storm
PROJECT INFORMATION
Total Property Area 13 44 acres Total Impervious Area 7 59 acres
Total Coastal Wetlands Area 0 00 acres Project%impervious area 48%
Total Surface Water Area 0 00 acres
Complete the breakdown of impervious area for the project ALL AREAS ARE IN SQUARE FEET
Basin Information Entire Site
Receiving Stream name Rocky River Use Worksheet Data? I No
Stream Class C
Stream Index Number 13-17
Total Drainage Area 692,604
On-Site Drainage Area(sf) 459,652
Offsite Drainage Area(sf) 232,952
Proposed Impervious Area(sf) 330,417
%Impervious Area(total) 48%
Impervious Surface Area Entire Site
On-Site Buildings/Lots(sf) 165,600
On-Site Streets(sf) 19,067
On-Site Parking (sf) 145,750
On-Site Sidewalks (sf) 0
Other On-Site (sf)
Future (sf) 0
Off-site (sf) 0
Existing BUA (sf) 0
Total 330,417
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Version 1 4 Project Data Page 5 of 17

If
Allen Storage Center Midland
Midland,+ NC CABARRUS County
�
IF
E NC®ENR
Drainage Area# I of 1
, PRE-DEVELOPMENT LAND USE CALCULATIONS
Pre-Development Land Use: Area
HSG Land-use CN (sf) (acres) %
C Woods 70 585,446 13 44 100 00%
Subtotal 585,446 13 44
Note Enter BUA Draining to
Permeable Pavement Below
User Defined Drainage Areas: Comp Area
HSG Description CN Area(sf) (ac.) %Imp
000 000%
Subtotal 585,446 13 44 0 00%
Existing Permeable Pavement(Infiltration):
Soil Gravel Total Orifice Orifice
HSG Pavement Area Additional BUA I n Rate'o Void Space Depth/ Has Synthetic D.S
Dia Height BUA% Liner? BMP
SCM# Description (sf) (st) (in/hr) (%) (in) (in) (in)
1001
Existing Green Roofs'
DSD PAW D5, Area DS SCM# Notes
SCM# Description (in) (%) (in) (st) (acres)
1501 1 40 0 00
Land Use Summary- Area(sf.)
From Land Use Tables 585,446 13 44 acres
Permeable Pavement+Additional BUA 0 000 acres
Green Roofs 0 0 00 acres
Preserved Surface Waters&Non-Coastal Wetlands 0 00 acres
Preserved Coastal Wetlands 0 00 acres
Total Site Area: 585,446 13.44 acres
Pre-Development SCMs• Drainage Area
WQ Volume Imp Open
Provided (st) (sf) Downstream
SCM# SCM Type (cf) HSG 0 585446 SCM
200
Design Storm Runoff Fate Summary:
Rainfall Volume= 18 82 acre-inches = 68,302 cf
Runoff Reduction Components:
Natural Infiltration&ET= -18 00 acre-inches = -65,324 cf
Disconnected Impervious Surfaces= 0 00 acre-inches = 0 cf
SCM Infiltration= 0 00 acre-inches = 0 cf
Permeable Pavement Infiltration= 0 00 acre-inches = 0 cf
Green Roof ET= 0 00 acre-inches = 0 cf
Post Filtration Discharge= 0 00 acre-inches = 0 cf
Total Runoff Reduction= -18 00 acre-inches = -65,324 cf
SCM Treatment:
Treated SCM Outflow= 0 00 acre-inches = 0 cf
1 Untreated Surface Runoff= 0.82 acre-inches = 2,978 cf 1
The Pre-Development project area contains 0 sf of built upon area,resulting in an overall density of 0%.
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Version 1 4 Pre-Development Page 6 of 17

\ Allen Storage Center Midland
3101 M Midland,NC CABARRUS County ACA
NCDENR
Drainage Area# 1 of 1
- -
POST-DEVELOPMENT LAND USE CALCULATIONS
Permeable Pavement
Total
Infiltration Has Orifice Orifice Down-
HSG PvmtT a Pavement Area Additional BUA Rate Void Space Gravel Infiltration Detention
Type Depth Synthetic Dia Height stream Check Check
SCM# (sf) (acres) (sf) (acres) (in/hr) (%) in Liner? SCM
( ) (in) (in)
500 0 OD 0 DD No
Green Roofs'
DSD PAW Dgr Area Downstream
Retrofit? Downstream
SCM# (in) (%) (in) (sf) (acres) SCM#
I 600 1 40 0 00 No
Residential Lot CN Calculator(Excluding R/W and dedicated open spaces).
Lot Area Max Imp I Lot Woods!Lot Open Space I Lot
#of Lots %Imp Avg Lot Size
(sf) (ac) (sf) (sf) (sh
0 00
Remaining Land Use Area
HSG I Land-Use I CN (sf) I (acres)
C Impervious 980 330,185 758 56 40%
C Open Space(Managed Open Space) 74 0 255,262 5 86 43 60%
Permeable Pavement*BUA N/A _ 0 000 00D%
Green Roofs N/A 0 000 000%
Sub-Total 585,447 13 44 100 00%
Land Excluded,or Partially Excluded,from Volume Calculations• (sf) (ac)
Surface Waters&Non-Coastal Wetlands 0 0 00
Coastal Wetlands 0 0 00
I Total Site Area 585,447 13 44
Error Site Area does not match pre-development
Design Storm Runoff Fate Summary:
Rainfall Volume= 1882 acre-inches = 68,302 cf
Runoff Reduction Components.
Natural Infiltration&ET= -9 18 acre-inches = -38330 cf
Disconnected Impervious Surfaces= 0 00 acre-inches = o cf
SCM Infiltration= -048 acre-inches = -1,749 cf
Permeable Pavement Infiltration= 0 00 acre-inches = o cf
Green Roof ET= 0 0o acre-inches = o cf
Post Filtration Discharge= 0 0o acre-inches = 0 cf
Total Runoff Reduction= -9 66 acre-inches = -35,078 cf
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3/9/2017
Version 1 4 Post Development Page 7 of 17

F' Allen Storage Center Midland
StO,YM Midland,NC CABARRUS County Ada
E Zl> NC®ENR
Drainage Area# 1 of 1
POST-DEVELOPMENT LAND USE CALCULATIONS
SCM Treatment:
Treated SCM Outflow= -915 acre-inches = -33,224 cf
Untreated Surface Runoff= 0 00 acre-inches = 0 cf
Pre-Development Runoff= 0 82 acre-Inches = 2,978 cf
Difference= -0 82 acre-inches = -2,978 cf
The Post-Development project area contains 330185 sf of built upon area,resulting in an overall density of 56 4%
STORM-EZ 3/8/2017
Version 1 4 Post Development Page 8 of 17

Allen Storage Center Midland
%to Midland,NC CABARRUS County
A19.
EZ NCDENR
Drainage Area# 1 of 1
PROPOSED SIPS 8 STRUCTURAL RUNOFF VOLUME CONTROLS
Enter only runoff volume below that will be infiltrated or drawn down over 2 to 5 days. Additional volume provided in devices should not be entered in this worksheet.
Drawdown time requirement applies to all storm events
Offsite Impervious 0 sf
Area Treated
STORMWATER CONTROL MEASURES
Contributing Area Drainage Total Post
Impervious Pervious %of Total %of Total Storage Down- Area Inflow Inflow Infiltration 8 Filtration Treated %of SCM
sat (s0 (s0 Impervious Pervious Volume stream SCM Volume Volume ET Outflow Outflow Volume
Name Location Type of Device HSG 330,185 255,262 Area Area (c) a (og (ct) tot) (o0 (cf) Utilized
700 I Wet Pond I Wet Detention I Liner 330,185 255,262 100% I 100% 53792 I 34972 I 34972 I 1749 I 0 I 33224 I 65%
255262 sf open space entered 100%of total 1 ouof
330185 sfus area entered tot%al
compared to 330185 st total rmperwous compered to 255262 sf total tame/woos
330165 pernous
open space area area
Design Storm Runoff Fate Summary
Rainfall Volume= 1082 acre-inches = 68,302 cf
Runoff Reduction Components.
Natural Infiltration 8 ET= -918 acre-inches = -33 330 cf
Disconnected Impervious Area= 000 acre-inches = 0 cf
SCM Infiltration= -048 acre-orches = -1,749 of
Permeable Pavement Infiltration= 000 acre-inches = 0 cf
Green Roof ET= 000 acre-inches = 0 cf
Post Filtration Discharge= 0 00 acre-inches = 0 of
Total Runoff Reduction= -9 66 acre Inches = -35,078 cf
SCM Treatment
Treated SCM Outflow= -915 acre-inches = -33,224 Cf
Untreated Surface Runoff= 0 00 acre-Inches = 0 cf
Pre-Development Runoff= 0 82 acre-inches = 2,978 cf
Difference= -082 acre-inches = -2,978 at
**BASIC TREATMENT MET**
The Post-Development project area contains 330185 sf of built upon area,resulting In an overall density 0166 4%
Warnings
Note Large storage devices such as wet/dry detention ponds,constructed wetlands,or infiltration basins may require pond routing calculations The routing calculations should be provided in addition to this spreadsheet
STORM-EZ 3/9/2017
Version 1 4 Stormwater Controls Page 9 0117

•
Allen Storage Center Midland
S orim Midland,NC CABARRUS County wIr
EZ NCDENR
Drainage Area# 1 of 1
FATE OF RAINFALL
Select Storm I P90
BASIC TREATMENT SCALE
Compliance Storm=P90 Storm-Rainfall Depth=1 4 inches
Basic Treatment Threshold
VOLUME MATCHING SCALE
P90 Storm-Rainfall Depth=1 4 inches
19
Volume Matching Threshold
FATE OF RAINFALL GRAPHS
Pre Development Fates Post Development Fates
20036 100%
90% 90%
80% 80%
70% 70%
E 60% E 60%
1 r
50% 050% ._.._ _„,
F.
:e 40% r
40%
30% 30% -
.
20%
20% ,
10% 10% - . � ' i
•
0%
0%
Infiltration and Er-65324 d Treated Outflow from RMPs-Cid Untreated Surface Runoff-2978 of Infiltration and ET-35079 of Treated Outflow from BMPs-33224d Untreated Surface Runoff-Od
Post Filtration Outflow-Od •Other Is Post Filtration Outflow-0d
•Infiltration by BMPsermeable Pavement Infiltration-0 0 Other
-Octct is
0 Infiltration by BMPs-1749 d
is Disconnected Impervious Infiltration-0d •Green Roof Evapotranspiration-Od U Permeable Pavement Infiltration-O cf
•Disconnected Impervious Infiltration-0 d
•Infiltration and ET-65324 d •Green Raaf Evapotranspiration-0 d
The Fate of Rainfall charts display the hydrologic processes to which rainfall volumes are subjected based on the combinations of land use,soil type,end stormwater controls entered by the user The charts are designed to display the stormwater
plan in a form which illustrates changes to the hydrologic cycle which result from urbanization and various stormwater management strategies
STORM-ES 3!912017
Version 1 4 Rainfall Fate Graph Page 10 of 17

Allen Storage Center Midland
St/ Midland,NC CABARRUS County
Drainage Area# 1 of 1 NCEN
R
ADDITIONAL CALCULATIONS
TIME OF CONCENTRATION CALCULATIONS:
Pre-Development
Length(ft) Slope(ft/ft) Surface Cover Tt(hrs)
Sheet Flow 300 0 0133 Woods 0 99
Sheet Flow
Shallow Flow 1330 0 0158 Unpaved 0 18
Shallow Flow
Flow Area
Length(ft) Slope(ft/ft) n-value (ft2) Wetted Perimeter (ft) Tt(hrs)
Channel Flow
Channel Flow
' IPre-development To= 70.34 min (Minimum 5 minutes)
Post Development
Length(ft) Slope(ft/ft) Surface Cover Tt(hrs)
Sheet Flow 299 0 026 Paved or Bare Sod 0 04
Sheet Flow
Shallow Flow 767 0 004 Paved 0 17
Shallow Flow
Flow Area
Length(ft) Slope(ft/ft) n-value (ft2) Wetted Perimeter (ft) Tt(hrs)
Channel Flow
Channel Flow
(Post-development Tc= 12.50 min (Minimum 5minutes)
ADJUSTED CURVE NUMBER CALCULATIONS: ,
Analysis Area=13.44 Acres(0.021 sq.miles)
Pre-Development
F.F. P90 P95 1-Yr 2-Yr 10-Yr 25-Yr 50-Yr 100-Yr
Rainfall(in)= 1 00 1 40 1 86 2 78 3 36 4 89 5 80 6 53 7 27
Q*(1n)= 0 00 0 06 0 19 0 60 0 92 1 96 2 65 3 23 3 84
CNad1= 70 70 70 70 70 70 70 70 70
Post Development
F F P90 P95 1-Yr 2-Yr 10-Yr 25-Yr 50-Yr 100-Yr
Rainfall(in)= 1 00 1 40 1 86 2 78 3 36 4 89 5 80 6 53 7 27
Q'(,n)= 000 000 000 067 116 251 335 403 473
CNad7= 67 59 52 72 74 77 77 78 78
PEAK FLOW CALCULATIONS:
Analysis Area=13.44 Acres(0.021 sq.miles)
F.F. I P90 I P95 I 1-Yr I 2-Yr I 10-Yr I 25-Yr I 50-Yr I 100-Yr
Pre-Development
Q'(in) 0 00 0 06 0 19 0 60 0 92 1 96 2 65 - 3 23 3 84
q„(csm/in) -142 02 142 02 166 07 229 61 229 61 27,3 84 273 84 273.84 273 84
Q(cfs) 0.01 0 18 0.66 2.87 4.45 11.24 15.22 18.58 22.11
Post Development
Q*(in) 000 000 000 067 116 251 '335 403 473
qu(csm/in) 270 80 270 80 270 80 - 566 54 566 54 691 71 691 71 691 71 691 71
Q(cfs) 0.00 0.00 0.00 7.99 13.80 36.53 48.66 58.55 68.68
-1000% -100.0% -1000% 178 4% 2101% , 224 9% 2196% 2151% 2107%
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Version 1 4 Peak Flow Calcs Page 11 of 17

I 'Note To decrease Post-development peak flows-increase storage volume being drawdown or infiltrated or lengthen post-
development time of concentration See LID HELP for more information
STORM-EZ 3/9/2017
Version 1 4 Peak Flow Calcs Page 12 of 17

Operation & Maintenance Agreement
Allen Storage Center Midland
Midland,NC CABARRUS County
Prepared By: Samuel J Smith,PE,Chambers Engineering,PA
_ Cover Page .
Maintenance records shall be kept on the following BMP(s) This maintenance record shall be kept in a log in a known set location
Any deficient BMP elements noted in the inspection will be corrected,repaired,or replaced immediately. These deficiencies can
affect the integrity of structures,safety of the public,and the pollutant removal efficiency of the BMP(s)
The BMP(s)on this project include(check all that apply&corresponding O&M tables will be added automatically):
Bioretention Cell Quantity. Location(s).
Dry Detention Basin Quantity Location(s)•
Grassed Swale Quantity. Location(s)
Green Roof Quantity Location(s):
Infiltration Basin Quantity Location(s)
Infiltration Trench Quantity Location(s)
Level SpreaderNFS Quantity Location(s)
Permeable Pavement Quantity Location(s)
Proprietary System Quantity Location(s)
Rainwater Harvesting Quantity. Location(s):
Sand Filter Quantity Location(s) _
Stormwater Wetland Quantity Location(s).
Wet Detention Basin Quantity. 1 Location(s) North of Mini Storage Buildings
Disconnected Impervious Area Present No Location(s) _ _ - _
Soil Amendments Present No Location(s)
CLICK TO UPDATE O&M MANUAL >>>
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for
each BMP above,and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any changes to
the system or responsible party.
*Responsible Party Rick Allen
Title&Organization Owner,ASC Midland,LLC
Street address. 411 North Central Avenue
City,state,zip. Locust,NC 28097
Phone number(s) 704-888-1222
Email. [e-mail]
Signature. qa.AA, 114B4 /4414444— Date. ) l•)117
I, ac,z -T,trt,�A ,a Notary Public for the State of Yvc . l_ c 1)(L,Aa
County of c E. 0 e.6 ,do hearby certify that 42c _t.lt 6. k .Lt_& "AL
personally appeared before me this day of )e Juko...(\ `D(1 and
acknowledge the due execution of the 0 erations and Maintenance Agreement. JI
Witness my hand and official seal, 11/4-641,(1.�-,f.. C v
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ml y\� �v ®
Pl :. -• 4 (mac cls 13 'p U OK
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,' . ...°,4--\ My commission expires
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STORM-EZ 1/31/2017
Version 1 4 O&M Manual Page 1 of 1

Wet•Detention Pond
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if
one is provided
Important maintenance procedures:
- Immediately after the wet detention basin is established,the plants on the vegetated shelf and perimeter of the
basin should be watered twice weekly if needed, until the plants become established (commonly six weeks).
_ No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to
establish the plants on the vegetated shelf.
_ Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention
basin.
_ If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the
emergency drain should be minimized to the maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event
greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance should be kept in a
known set location and must be available upon request
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
BMP element: Potential problem: How I will remediate the problem:
The entire BMP Trash/debris is present. Remove the trash/debris.
The perimeter of the BMP Areas of bare soil and/or Regrade the soil if necessary to remove the gully, and then plant a
erosive gullies have formed. ground cover and water until it is established. Provide lime and a one-
time fertilizer application
Vegetation is too short or too Maintain vegetation at a height of approximately six inches.
long.
The inlet device The pipe is clogged. Unclog the pipe. Dispose of the sediment off-site.
The pipe is cracked or Replace the pipe.
otherwise damaged.
Erosion is occurring in the Regrade the swale if necessary to smooth it over and provide erosion
swale. control devices such as reinforced turf matting or riprap to avoid future
problems with erosion.
Stone verge is clogged or Remove sediment and replace with clean stone.
covered in sediment(if
applicable).
The forebay Sediment has accumulated to Search for the source of the sediment and remedy the problem if
a depth greater than the possible. Remove the sediment and dispose of it in a location where it
original design depth for will not cause impacts to streams or the BMP.
sediment storage.
Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or
riprap if needed to prevent future erosion problems
Weeds are present. Remove the weeds, preferably by hand. If pesticide is used,wipe it on
the plants rather than spraying.
The vegetated shelf Best professional practices Prune according to best professional practices
show that pruning is needed
to maintain optimal plant
health.
Plants are dead, diseased or Determine the source of the problem: soils, hydrology, disease, etc.
dying. Remedy the problem and replace plants. Provide a one-time fertilizer
application to establish the ground cover if a soil test indicates it is
necessary.
Weeds are present. Remove the weeds, preferably by hand. If pesticide is used,wipe it on
the plants rather than spraying.
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Version 1.4 O&M Manual Page 15 of 17

•
- Wet Detention Pond Maintenance Requirements (Continued) -
The main treatment area Sediment has accumulated to Search for the source of the sediment and remedy the problem if
a depth greater than the possible. Remove the sediment and dispose of it in a location where it
original design sediment will not cause impacts to streams or the BMP.
storage depth.
Algal growth covers over 50% Consult a professional to remove and control the algal growth.
of the area.
Cattails, phragmites or other Remove the plants by wiping them with pesticide (do not spray).
invasive plants cover 50%of
the basin surface
The embankment Shrubs have started to grow Remove shrubs immediately.
on the embankment
Evidence of muskrat or Use traps to remove muskrats and consult a professional to remove
beaver activity is present. beavers.
A tree has started to grow on Consult a dam safety specialist to remove the tree.
the embankment.
An annual inspection by an Make all needed repairs.
appropriate professional
shows that the embankment
needs repair (if applicable)
The outlet device Clogging has occurred Clean out the outlet device. Dispose of the sediment off-site
The outlet device is damaged Repair or replace the outlet device
The receiving water Erosion or other signs of Contact the local NC Department of Environment and Natural
damage have occurred at the Resources Regional Office
outlet.
The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
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Version 1.4 O&M Manual Page 16 of 17

17 ����' - Wet,Detentiprif onil.D'es`ign_Surniriary:. <<,r �. z____ 22,'
WET POND ID FOREBAY MAIN POND
SW Pond Normal Pool El. 515 Normal Pool El 515
Temporary Pool El. 518 78 Temporary Pool El• 518 78
Pretreatment otherNo Clean out depth* 511 Clean out depth 511
than forebay? Sediment Storage El. 511 Sediment Storage El 511
Has Veg Filter? No Bottom El: 510 Bottom El. 510
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Version 1.4 O&M Manual Page 17 of 17