Piedmont Natural Gas Sutton Steam Plan Road Commercial Site Plan_ 2.15.2021PROJECT
SITE
CONTRACTOR SHALL NOTIFY "NC811" (811) OR (1-800-632-4949) AT
LEAST 3 FULL BUSINESS DAYS PRIOR TO BEGINNING CONSTRUCTION
OR EXCAVATION TO HAVE EXISTING UTILITIES LOCATED.
CONTRACTOR SHALL CONTACT ANY LOCAL UTILITIES THAT PROVIDE
THEIR OWN LOCATOR SERVICES INDEPENDENT OF "NC811".
REPORT ANY DISCREPANCIES TO THE ENGINEER IMMEDIATELY.
R
GREENVILLE, SOUTH CAROLINA 29607
PIEDMONT NATURAL GAS
100 WOODRUFF INDUSTRIAL lANE
OWNER:
CONTACT: CHRIS BYERS
EMAIL: Christopher.byers@duke-energy.com
PHONE: 864-286-7909
VICINITY MAP
N.T.S.
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361. 5000
fax 919. 361. 2269
license number: C-0293, C-187
www.mcadamsco.com
M:
\
P
r
o
j
e
c
t
s
\
P
i
e
d
m
o
n
t
N
G
a
s
\
P
N
G
-
2
0
0
0
0
\
0
4
-
P
r
o
d
u
c
t
i
o
n
\
E
n
g
i
n
e
e
r
i
n
g
\
C
o
n
s
t
r
u
c
t
i
o
n
D
r
a
w
i
n
g
s
\
C
u
r
r
e
n
t
D
r
a
w
i
n
g
s
\
P
N
G
2
0
0
0
0
-
C
S
.
d
w
g
,
12
/
4
/
2
0
2
0
8
:
5
1
:
4
3
A
M
,
Sh
e
a
r
e
r
,
K
i
r
k
SUTTON STEAM PLANT ROAD
WILMINGTON, NORTH CAROLINE, 28401
CONSTRUCTION DRAWINGS
PROJECT NUMBER: PNG-20000
DATE: DECEMBER 4, 2020
WILMINGTON CNG STATION
SUTTON STEAM PLANT ROAD
SHEET INDEX
1 COVER SHEET
2 EXISTING CONDITIONS
3 SITE PLAN
4 EROSION CONTROL PLAN STAGE 1
5 GRADING, STOREM DRAINAGE & EROSION CONTROL PLAN STAGE 2
6 SITE & STORM DRAINAGE DETAILS
7 EROSION CONTROL DETAILS
8 EROSION CONTROL DETAILS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361. 5000
fax 919. 361. 2269
license number: C-0293, C-187
www.mcadamsco.com
M:
\
P
r
o
j
e
c
t
s
\
P
i
e
d
m
o
n
t
N
G
a
s
\
P
N
G
-
2
0
0
0
0
\
0
4
-
P
r
o
d
u
c
t
i
o
n
\
E
n
g
i
n
e
e
r
i
n
g
\
C
o
n
s
t
r
u
c
t
i
o
n
D
r
a
w
i
n
g
s
\
C
u
r
r
e
n
t
D
r
a
w
i
n
g
s
\
P
N
G
2
0
0
0
0
-
X
C
1
.
d
w
g
,
12
/
4
/
2
0
2
0
8
:
5
1
:
5
3
A
M
, Sh
e
a
r
e
r
,
K
i
r
k
EXISTING CONDITIONS PLAN
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361. 5000
fax 919. 361. 2269
license number: C-0293, C-187
www.mcadamsco.com
M:
\
P
r
o
j
e
c
t
s
\
P
i
e
d
m
o
n
t
N
G
a
s
\
P
N
G
-
2
0
0
0
0
\
0
4
-
P
r
o
d
u
c
t
i
o
n
\
E
n
g
i
n
e
e
r
i
n
g
\
C
o
n
s
t
r
u
c
t
i
o
n
D
r
a
w
i
n
g
s
\
C
u
r
r
e
n
t
D
r
a
w
i
n
g
s
\
P
N
G
2
0
0
0
0
-
S
1
.
d
w
g
,
12
/
4
/
2
0
2
0
8
:
5
2
:
0
3
A
M
, Sh
e
a
r
e
r
,
K
i
r
k
GRAPHIC SCALE
0 10 20 40
1 inch = 20 ft.
SITE PLAN
EXISTINGSUTTON STEAM P
L
A
N
T
R
O
A
D
(60' PUBLIC R/W)
GENERAL NOTES:
1.ALL DIMENSIONS AND GRADES SHOWN ON THE PLANS SHALL BE FIELD VERIFIED BY THE
CONTRACTOR PRIOR TO CONSTRUCTION. CONTRACTOR SHALL NOTIFY THE OWNER IF ANY
DISCREPANCIES EXIST PRIOR TO PROCEEDING WITH CONSTRUCTION FOR NECESSARY PLAN
OR GRADE CHANGES. NO EXTRA COMPENSATION SHALL BE PAID TO THE CONTRACTOR FOR
ANY WORK DONE DUE TO DIMENSIONS OR GRADES SHOWN INCORRECTLY ON THESE PLANS
IF SUCH NOTIFICATION HAS NOT BEEN GIVEN.
2.THERE MAY BE WETLANDS WITHIN THIS SITE. IT IS THE OWNER'S RESPONSIBILITY FOR
WETLANDS JURISDICTION AND PERMIT DISTURBANCE PRIOR TO ANY GRADING ACTIVITY.
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361. 5000
fax 919. 361. 2269
license number: C-0293, C-187
www.mcadamsco.com
M:
\
P
r
o
j
e
c
t
s
\
P
i
e
d
m
o
n
t
N
G
a
s
\
P
N
G
-
2
0
0
0
0
\
0
4
-
P
r
o
d
u
c
t
i
o
n
\
E
n
g
i
n
e
e
r
i
n
g
\
C
o
n
s
t
r
u
c
t
i
o
n
D
r
a
w
i
n
g
s
\
C
u
r
r
e
n
t
D
r
a
w
i
n
g
s
\
P
N
G
2
0
0
0
0
-
E
C
1
.
d
w
g
, 12
/
4
/
2
0
2
0
8
:
5
2
:
1
5
A
M
,
Sh
e
a
r
e
r
,
K
i
r
k
EROSION CONTROL PLAN STAGE 1
GRAPHIC SCALE
0 10 20 40
1 inch = 20 ft.
EXISTINGSUTTON STEAM P
L
A
N
T
R
O
A
D
(60' PUBLIC R/W)
CONTRACTOR SHALL NOTIFY "NC811" (811) OR (1-800-632-4949) AT
LEAST 3 FULL BUSINESS DAYS PRIOR TO BEGINNING CONSTRUCTION
OR EXCAVATION TO HAVE EXISTING UTILITIES LOCATED.
CONTRACTOR SHALL CONTACT ANY LOCAL UTILITIES THAT PROVIDE
THEIR OWN LOCATOR SERVICES INDEPENDENT OF "NC811".
REPORT ANY DISCREPANCIES TO THE ENGINEER IMMEDIATELY.
R
EROSION CONTROL LEGEND
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361. 5000
fax 919. 361. 2269
license number: C-0293, C-187
www.mcadamsco.com
M:
\
P
r
o
j
e
c
t
s
\
P
i
e
d
m
o
n
t
N
G
a
s
\
P
N
G
-
2
0
0
0
0
\
0
4
-
P
r
o
d
u
c
t
i
o
n
\
E
n
g
i
n
e
e
r
i
n
g
\
C
o
n
s
t
r
u
c
t
i
o
n
D
r
a
w
i
n
g
s
\
C
u
r
r
e
n
t
D
r
a
w
i
n
g
s
\
P
N
G
2
0
0
0
0
-
G
1
.
d
w
g
,
12
/
4
/
2
0
2
0
8
:
5
2
:
2
5
A
M
,
Sh
e
a
r
e
r
,
K
i
r
k
GRADING, STORM DRAINAGE & EROSION CONTROL PLAN STAGE 2
GRAPHIC SCALE
0 10 20 40
1 inch = 20 ft.
EXISTINGSUTTON STEAM P
L
A
N
T
R
O
A
D
(60' PUBLIC R/W)
STORM DRAINAGE NOTES:
1.ALL STORM DRAINAGE PIPES SHOWN SHALL BE REINFORCED CONCRETE (RCP)
(MINIMUM CLASS III) UNLESS NOTED OTHERWISE. CONTRACTOR TO COORDINATE
WITH THE GEOTECH TO VERIFY TYPE OF BEDDING REQUIRED BASED ON SOIL
CONDITIONS. CONTRACTOR TO SELECT REQUIRED CLASS OF PIPE BASED ON DEPTH
OF PIPE AND BEDDING PROVIDED PER THE AMERICAN CONCRETE PIPE
ASSOCIATION GUIDELINES.
2.ALL STORM DRAINAGE CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE
LATEST CITY OF WILMINGTON STANDARDS.
3.ALL CONCRETE SHALL MEET A MINIMUM 3000 PSI COMPRESSIVE STRENGTH.
4.ALL PIPE IN STORM DRAIN STRUCTURES SHALL BE STRUCK EVEN WITH INSIDE
WALL.
5.ALL PIPE JOINTS SHALL BE MADE WITH PREFORMED JOINT SEALER, WHICH
CONFORMS TO AASHTO SPECIFICATION M-198 FOR TYPE B FLEXIBLE PLASTIC
GASKETS UNLESS OTHERWISE NOTED.
6.THE INTERIOR SURFACES OF ALL STORM DRAINAGE STRUCTURES SHALL BE
POINTED UP AND SMOOTHED TO AN ACCEPTABLE STANDARD USING MORTAR
MIXED TO MANUFACTURER'S SPECIFICATIONS.
7.ALL BACKFILL SHALL BE NON-PLASTIC IN NATURE, FREE FROM ROOTS,
VEGETATION MATTER, WASTE CONSTRUCTION MATERIAL OR OTHER
OBJECTIONABLE MATERIAL. SAID MATERIAL SHALL BE CAPABLE OF BEING
COMPACTED BY MECHANICAL MEANS AND SHALL HAVE NO TENDENCY TO FLOW
OR BEHAVE IN A PLASTIC MANNER UNDER THE TAMPING BLOWS OR PROOF
ROLLING.
8.MATERIALS DEEMED BY THE OWNER'S REPRESENTATIVE AS UNSUITABLE FOR
BACKFILL PURPOSES SHALL BE REMOVED AND REPLACED WITH SUITABLE
MATERIAL.
9.BACKFILLING OF TRENCHES SHALL BE ACCOMPLISHED IMMEDIATELY AFTER PIPE IS
LAID. THE FILL AROUND THE PIPE SHALL BE THOROUGHLY COMPACTED TO 95%
OF THE MAXIMUM DRY DENSITY OBTAINABLE WITH THE STANDARD PROCTOR
TEST. THE TOP EIGHT (8) INCHES SHALL BE COMPACTED TO 100 PERCENT
STANDARD PROCTOR.
10.UNDER NO CIRCUMSTANCES SHALL WATER BE ALLOWED TO RISE IN
UNBACKFILLED TRENCHES AFTER PIPE HAS BEEN PLACED.
11.IF THE USE OF WAFFLE BOXES ARE ALLOWED AT THIS SITE, ALL PENETRATIONS FOR
STORM DRAINAGE PIPES MUST BE MADE WITHIN THE KNOCK-OUT PORTION OF
THE BOX AND NOT AT THE CORNERS WHERE THE STRUCTURAL INTEGRITY MAY BE
COMPROMISED.
CONTRACTOR SHALL NOTIFY "NC811" (811) OR (1-800-632-4949) AT
LEAST 3 FULL BUSINESS DAYS PRIOR TO BEGINNING CONSTRUCTION
OR EXCAVATION TO HAVE EXISTING UTILITIES LOCATED.
CONTRACTOR SHALL CONTACT ANY LOCAL UTILITIES THAT PROVIDE
THEIR OWN LOCATOR SERVICES INDEPENDENT OF "NC811".
REPORT ANY DISCREPANCIES TO THE ENGINEER IMMEDIATELY.
R
GRADING, STORM DRAINAGE
& EROSION CONTROL LEGEND
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361. 5000
fax 919. 361. 2269
license number: C-0293, C-187
www.mcadamsco.com
M:
\
P
r
o
j
e
c
t
s
\
P
i
e
d
m
o
n
t
N
G
a
s
\
P
N
G
-
2
0
0
0
0
\
0
4
-
P
r
o
d
u
c
t
i
o
n
\
E
n
g
i
n
e
e
r
i
n
g
\
C
o
n
s
t
r
u
c
t
i
o
n
D
r
a
w
i
n
g
s
\
C
u
r
r
e
n
t
D
r
a
w
i
n
g
s
\
P
N
G
2
0
0
0
0
-
D
1
.
d
w
g
,
12
/
4
/
2
0
2
0
8
:
5
2
:
3
2
A
M
,
Sh
e
a
r
e
r
,
K
i
r
k
SITE & STORM DRAINAGE DETAILS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361. 5000
fax 919. 361. 2269
license number: C-0293, C-187
www.mcadamsco.com
M:
\
P
r
o
j
e
c
t
s
\
P
i
e
d
m
o
n
t
N
G
a
s
\
P
N
G
-
2
0
0
0
0
\
0
4
-
P
r
o
d
u
c
t
i
o
n
\
E
n
g
i
n
e
e
r
i
n
g
\
C
o
n
s
t
r
u
c
t
i
o
n
D
r
a
w
i
n
g
s
\
C
u
r
r
e
n
t
D
r
a
w
i
n
g
s
\
P
N
G
2
0
0
0
0
-
D
2
.
d
w
g
,
12
/
4
/
2
0
2
0
8
:
5
2
:
3
8
A
M
,
Sh
e
a
r
e
r
,
K
i
r
k
EROSION CONTROL DETAILS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone 919. 361. 5000
fax 919. 361. 2269
license number: C-0293, C-187
www.mcadamsco.com
M:
\
P
r
o
j
e
c
t
s
\
P
i
e
d
m
o
n
t
N
G
a
s
\
P
N
G
-
2
0
0
0
0
\
0
4
-
P
r
o
d
u
c
t
i
o
n
\
E
n
g
i
n
e
e
r
i
n
g
\
C
o
n
s
t
r
u
c
t
i
o
n
D
r
a
w
i
n
g
s
\
C
u
r
r
e
n
t
D
r
a
w
i
n
g
s
\
P
N
G
2
0
0
0
0
-
D
3
.
d
w
g
,
12
/
4
/
2
0
2
0
8
:
5
2
:
4
9
A
M
,
Sh
e
a
r
e
r
,
K
i
r
k
EROSION CONTROL DETAILS
NCG01 GROUND STABILIZATION AND MATERIALS HANDLING EFFECTIVE: 04/01/19
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCG01 CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCG01 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority having jurisdiction. All details and specifications shown on this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1.Select flocculants that are appropriate for the soils being exposed during
construction, selecting from the NC DWR List of Approved PAMS/Flocculants.
2.Apply flocculants at or before the inlets to Erosion and Sediment Control Measures.
3.Apply flocculants at the concentrations specified in the NC DWR List of Approved
PAMS/Flocculants and in accordance with the manufacturer's instructions.
4.Provide ponding area for containment of treated Stormwater before discharging
offsite.
5.Store flocculants in leak-proof containers that are kept under storm-resistant cover
or surrounded by secondary containment structures.
HAZARDOUS AND TOXIC WASTE
1.Create designated hazardous waste collection areas on-site.
2.Place hazardous waste containers under cover or in secondary containment.
3.Do not store hazardous chemicals, drums or bagged materials directly on the ground.
EQUIPMENT AND VEHICLE MAINTENANCE
1.Maintain vehicles and equipment to prevent discharge of fluids.
2.Provide drip pans under any stored equipment.
3.Identify leaks and repair as soon as feasible, or remove leaking equipment from the
project.
4.Collect all spent fluids, store in separate containers and properly dispose as
hazardous waste (recycle when possible).
5.Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6.Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products
to a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1.Never bury or burn waste. Place litter and debris in approved waste containers.
2.Provide a sufficient number and size of waste containers (e.g dumpster, trash
receptacle) on site to contain construction and domestic wastes.
3.Locate waste containers at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4.Locate waste containers on areas that do not receive substantial amounts of runoff
from upland areas and does not drain directly to a storm drain, stream or wetland.
5.Cover waste containers at the end of each workday and before storm events or
provide secondary containment. Repair or replace damaged waste containers.
6.Anchor all lightweight items in waste containers during times of high winds.
7.Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8.Dispose waste off-site at an approved disposal facility.
9.On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1.Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2.Locate paint washouts at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
3.Contain liquid wastes in a controlled area.
4.Containment must be labeled, sized and placed appropriately for the needs of site.
5.Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1.Install portable toilets on level ground, at least 50 feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocation of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags.
2.Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3.Monitor portable toilets for leaking and properly dispose of any leaked material.
Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace
with properly operating unit.
HERBICIDES, PESTICIDES AND RODENTICIDES
1.Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2.Store herbicides, pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
accidental poisoning.
3.Do not store herbicides, pesticides and rodenticides in areas where flooding is
possible or where they may spill or leak into wells, stormwater drains, ground water
or surface water. If a spill occurs, clean area immediately.
4.Do not stockpile these materials onsite.
CONCRETE WASHOUTS
1.Do not discharge concrete or cement slurry from the site.
2.Dispose of, or recycle settled, hardened concrete residue in accordance with local
and state solid waste regulations and at an approved facility.
3.Manage washout from mortar mixers in accordance with the above item and in
addition place the mixer and associated materials on impervious barrier and within
lot perimeter silt fence.
4.Install temporary concrete washouts per local requirements, where applicable. If an
alternate method or product is to be used, contact your approval authority for
review and approval. If local standard details are not available, use one of the two
types of temporary concrete washouts provided on this detail.
5.Do not use concrete washouts for dewatering or storing defective curb or sidewalk
sections. Stormwater accumulated within the washout may not be pumped into or
discharged to the storm drain system or receiving surface waters. Liquid waste must
be pumped out and removed from project.
6.Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
can be shown that no other alternatives are reasonably available. At a minimum,
install protection of storm drain inlet(s) closest to the washout which could receive
spills or overflow.
7.Locate washouts in an easily accessible area, on level ground and install a stone
entrance pad in front of the washout. Additional controls may be required by the
approving authority.
8.Install at least one sign directing concrete trucks to the washout within the project
limits. Post signage on the washout itself to identify this location.
9.Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sand bags or other temporary structural
components when no longer functional. When utilizing alternative or proprietary
products, follow manufacturer's instructions.
10.At the completion of the concrete work, remove remaining leavings and dispose of
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
caused by removal of washout.
EARTHEN STOCKPILE MANAGEMENT
1.Show stockpile locations on plans. Locate earthen-material stockpile areas at least
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2.Protect stockpile with silt fence installed along toe of slope with a minimum offset of
five feet from the toe of stockpile.
3.Provide stable stone access point when feasible.
4.Stabilize stockpile within the timeframes provided on this sheet and in accordance
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
SECTION E: GROUND STABILIZATION
Required Ground Stabilization Timeframes
Note: After the permanent cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case longer than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintained in a manner to render the
surface stable against accelerated erosion until permanent ground stabilization is achieved.
Site Area Description Timeframe variations
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HQW Zones
-10 days for Falls Lake Watershed unless
there is zero slope
Stabilize within this
many calendar
days after ceasing
land disturbance
7
7
7
14
None
None
(a)Perimeter dikes,
swales, ditches, and
perimeter slopes
(b)High Quality Water
(HQW) Zones
(c)Slopes steeper than
3:1
If slopes are 10' or less in length and are
not steeper than 2:1, 14 days are
allowed
(d)Slopes 3:1 to 4:1
(e)Areas with slopes
flatter than 4:1 14
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
NCG01 SELF-INSPECTION, RECORDKEEPING AND REPORTING EFFECTIVE: 04/01/19
PART III
SELF-INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF-INSPECTION
Self-inspections are required during normal business hours in accordance with the table
below. When adverse weather or site conditions would cause the safety of the inspection
personnel to be in jeopardy, the inspection may be delayed until the next business day on
which it is safe to perform the inspection. In addition, when a storm event of equal to or
greater than 1.0 inch occurs outside of normal business hours, the self-inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
PART III
SELF-INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1.E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The
approved E&SC plan must be kept up-to-date throughout the coverage under this permit.
The following items pertaining to the E&SC plan shall be kept on site and available for
inspection at all times during normal business hours.
2. Additional Documentation to be Kept on Site
In addition to the E&SC plan documents above, the following items shall be kept on the
site and available for inspectors at all times during normal business hours, unless the
Division provides a site-specific exemption based on unique site conditions that make
this requirement not practical:
(a)This General Permit as well as the Certificate of Coverage, after it is received.
(b)Records of inspections made during the previous twelve months. The permittee shall
record the required observations on the Inspection Record Form provided by the
Division or a similar inspection form that includes all the required elements. Use of
electronically-available records in lieu of the required paper copies will be allowed if
shown to provide equal access and utility as the hard-copy records.
PART III
SELF-INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1.Occurrences that Must be Reported
Permittees shall report the following occurrences:
(a)Visible sediment deposition in a stream or wetland.
(b)Oil spills if:
·They are 25 gallons or more,
·They are less than 25 gallons but cannot be cleaned up within 24 hours,
·They cause sheen on surface waters (regardless of volume), or
·They are within 100 feet of surface waters (regardless of volume).
(c) Releases of hazardous substances in excess of reportable quantities under Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S. 143-215.85.
(d)Anticipated bypasses and unanticipated bypasses.
(e)Noncompliance with the conditions of this permit that may endanger health or the
environment.
2.Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact
the appropriate Division regional office within the timeframes and in accordance with the
other requirements listed below. Occurrences outside normal business hours may also be
reported to the Department's Environmental Emergency Center personnel at (800)
858-0368.
3. Documentation to be Retained for Three Years
All data used to complete the e-NOI and all inspection records shall be maintained for a period
of three years after project completion and made available upon request. [40 CFR 122.41]
PART II, SECTION G, ITEM (4)
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT
Sediment basins and traps that receive runoff from drainage areas of one acre or more shall use outlet structures that withdraw water from the surface when these devices need to be drawn down
for maintenance or close out unless this is infeasible. The circumstances in which it is not feasible to withdraw water from the surface shall be rare (for example, times with extended cold weather).
Non-surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met:
(a)The E&SC plan authority has been provided with documentation of the non-surface withdrawal and the specific time periods or conditions in which it will occur. The non-surface withdrawal
shall not commence until the E&SC plan authority has approved these items,
(b)The non-surface withdrawal has been reported as an anticipated bypass in accordance with Part III, Section C, Item (2)(c) and (d) of this permit,
(c)Dewatering discharges are treated with controls to minimize discharges of pollutants from stormwater that is removed from the sediment basin. Examples of appropriate controls include
properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems,
(d)Vegetated, upland areas of the sites or a properly designed stone pad is used to the extent feasible at the outlet of the dewatering treatment devices described in Item (c) above,
(e)Velocity dissipation devices such as check dams, sediment traps, and riprap are provided at the discharge points of all dewatering devices, and
(f)Sediment removed from the dewatering treatment devices described in Item (c) above is disposed of in a manner that does not cause deposition of sediment into waters of the United States.