SW8031044_COMPLIANCE_20040108

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW_fi�g=_ W�! LOA
DOC TYPE
❑CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

A&K #03191
Permit No SSAAI R` 03 I C1 C4—1
State of North Carolina (to be provided by DWQ)
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form may he photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater application form, an
infiltration basin supplement for each system, design calculations, soils report and plans and
specifications showing all stormwater conveyances and system details
I. PROJECT INFORMATION
Project Name
Parker Retail
Contact Person Ricky Parker Phone Number
This worksheet applies to Basin No 1
[phone]
in Drainage Area _ 1
(as identified on plan) (from Form SWU-101)
II. DESIGN INFORMATION — Attach supporting calculations/documentation The soils report must be
based upon an actual field investigation and soil borings County soil maps are not an acceptable
source of soils information All elevations shall be in feet mean sea level (fmsl)
Soils Report Summary
Soil Type
Infiltration Rate
SHWT Elevation
Basin Design Parameters
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Bann Elevations
Bottom Elevation
Storage Elevation
Top Elevation
Sand
25 Uln/hror cflhr/sf (circle appropriate units)
305 fms] (Seasonal High Water Table elevation)
1 5 inch (1 S inch event for SA waters, 1 inch event for others)
3,503 c f
0 028 Days
13 ft x 194 ft = 2,522 sq ft (bottom dimensions)
3,775 c f
368 fmsl
380 fmsl
380 fms]
Form SWU-103 Version 3 99 Page 1 of 3

III. 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, February 1999) 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.
Apple s 4nitials
( a System is located 50 feet from class SA waters and 30 feet from other surface waters
b System is located at least 100 feet from water supply wells
c Bottom of system is at least 2 feet above the seasonal high water table
d Bottom of the system is 3 feet above any bedrock or impervious soil horizon
System is not sited on or in fill material DWQ approval has been obtained
�— f System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
g Drainage area for the device is less than 5 acres
Sods have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is
attached
i System captures and infiltrates the runoff from the first 1 0 inch of rainfall (1 5 inch event
for areas draining to SA waters) Design volume and infiltration calculations attached
System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage Calculations attached
k All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V)
A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided
in Bottom of the device is covered with a layer of clean sand to an average depth of 44 inches
or dense vegetative cover is provided
n Vegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters
o Flow distribution mechanism within the basin is provided
A benchmark is provided to determine the sediment accumulation in the pretreatment
device
Runoff in excess of the design volume bypasses off-line systems (bypass detail provided)
r System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days A soils report and all
pert nent draw -down calculations are attached
s lans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized
Form SWU-103 Version 3 99 Page 2 of 3

+ IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition
2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetated cover to maintain a maximum height of six -inches, and remove trash as needed
After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration Remove any blockage and repair the structure to approved
design specifications
4 Remove accumulated sediment from the pretreatment system and infiltration basin annually or when
depth in the pretreatment unit is reduced to 75% of the original design depth The system shall be
restored to the original design depth without over -excavating Over -excavation may cause the required
water table separation to be reduced and may compromise the ability of the system to perform as
designed 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 a stockpiling near a stormwater treatment device or
stream, etc )
A benchmark shall be established in the pretreatment unit The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the design depth reads 3710 feet in the pretreatment unit, the sediment shall be
removed) from both the pretreatment unit and the infiltration basin
If the Division determines that the system is failing, the system will immediately be repaired to original
design specifications If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
I acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party
Print Name and Title Ricky Parker, President
Address 1861 Holden Beach Road SW Supply, NC 28462
Phone [phone] Date /0/2 y/7 3
Signature
Note. The legally respons;9le parry should not be a homeowners association unless more than SO% of the lots have been sold
and a resident of the subdivision has been named the president
, KDhl Gx-OuJS6
, do hereby certify that
a Notary Public for the State of N'\cwkin Q)ot k r) U County of
personally appeared before me this
a�=day of , �_, and acknowledge the due execution of the foregoing infiltration
4h. + VOSISS; "'e irements Witness m hand and official seal
�,•` a SEAL �l►,@ j ission expires O3 02/a7
Or�r� Version 3 99 Page 3 of 3

e Parkelvetail Site Investigation
Subject: Parker Retail Site Investigation
Date: Mon, 05 Jan 2004 12 59 19 -0500
From: Laune Munn <Laune Munn@ncmad net>
Organization: DWQ Wilmington Regional Office
To: Phil Norris <jpnorrts@andrewandkuske comma
Vincent Lewis and 2 met Mr Parker on site today for the infiltration
system investigation Vincent determined the seasonal high water table
to be between 40-50" below grade The soils are sandy The proposed
design will meet DENR regulations Please contact me if you have any
additional questions
Laurie
Laune Munn <La_urie_Munn(@ncmail net>
Environmental Engmeer
North Carolina Dept of Environmental and Natural Resources
NCDWQ Wtlmington'Regional Office
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I of 1 1/5/2404 12 59 PM

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Project Name:Q,►'k-i° I' Re,-fGY-(. _ Location- B rt,C n,s 64,1 C1C. t .f9
DIVISION OF WATER QUALITY
INFILTRATION SYSTEM INVESTIGATION
$o re -tom
1 The,�r m+me-depth / `-
Existing ground elevation q q 5q
Proposed Bottom elevation
Add 2' +2 +2 +2 +2
Depth rL_
2 The type of soil sY"d
3 The expected infiltration rate ,, II
4 The depth to the Seasonal High Water Table 7() 'JrO of
5 Additional comments
w r`,S Co rn -A r no cct q,� at
tales r o n art t G un�A .
Signature of Regional Office Personnel
Permit Application No
S IWQSISTORMWATIFORMS11NF1NVST FOR
Vincent Lewis, Soil Scientist
Date 1 Z.5 / a y