NCG130091_COC_20190417

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL AND LAND RESOURCES
GENERAL PERMIT NO. NCG130000
CERTIFICATE OF COVERAGE No. NCG130091
STORMWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215 1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
JML Energy Resources LLC
is hereby authorized to discharge stormwater from a facility located at
JML Energy Resources LLC
327 Old Hebron Road
Charlotte
Mecklenburg County
to receiving waters designated as Kings Branch Creek, a class C water in the Catawba River
Basin, in accordance with the effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III, and IV of General Permit No. NCG130000 as attached,
and as amended on page 2 of this Certificate of Coverage.
Amended conditions
1. This Certificate of Coverage is an enforceable part of the permit.
2. In accordance with 1SA NCAC 02H .0114(b)(1), the monitoring program in Part II
Section B Table 1 Analytical Monitoring Requirements of this permit is amended
as follows:

Table 1: Analytical Monitoring Requirements, REGARDLESS OF VEHICLE MAINTENANCE ACTIVITIES
OR GALLONS OF MOTOR OIL HYDRAULIC OIL USED AT THIS SITE.
Discharge'
Measurement
Stormwater
Sample'
Sample
Characteristics
Units
Fre uenc 1
Benchmarks
Type2
Location3
Total Suspended Solids (TSS)
mg/1
semi-annual
100
Grab
SDO
Chemical Oxygen Demand (COD)
mg/1
semi-annual
120
Grab
SDO
Copper (Cu), Total Recoverable
m I
semi-annual
0.010
Grab
SDO
Total Rainfa114
inches
semi-annual
N/A
Rain
-
gauge
Additional parameters for vehicle maintenance areas in which more than 55 gallons of motor
oil and or hydraulic oil are used per month
Non -Polar Oil & Grease by
mg/1
semi-annual
1s
Grab
SDO
EPA Method1664(SGT-KFM)
New Motor Oil/Hydraulic Oil Usage
gal/month
semi-annual
N/A
Estimate
-
Footnotes:
1 Measurement Frequency: Twice per year, during a measurable storm event
2 Sample collection must begin within the first 30 minutes of discharge.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless
representative outfall status (ROS) has been granted by NC Division of Energy, Mineral, and Land
Resources (DEMLR). A copy of the DEMLR letter granting ROS must be kept on site. DEMLR's ROS letter
remains in effect through the subsequent reissuance of this permit and as long as the pertinent site
conditions and operations remain unchanged, unless the ROS letter provides for other conditions or
duration.
4 For each sampled measurable storm event the total precipitation must be recorded from an on -site rain
gauge. (Where isolated sites are unmanned for extended periods, a local rain gauge reading may be
substituted for an on -site gauge, upon prior DEMLR written approval.)
S The permittee shall compare monitoring results to the benchmark values. Exceedances of the benchmarks
require the permittee to increase monitoring, increase management actions, increase record keeping,
and/or install stormwater best management practices (BMPs) in accordance with the Tiered Response
actions outlined in Part II, p. 7 of 9 in the General Permit (Tier One, Tier Two, and Tier Three). The pH
values should be within the range of 6.0-9.0 S.U. and must be measured in the field in accordance with
NPDES test procedure requirements in 40 CFR §136 (See Part III, Section D of the General Permit).
This certificate of coverage shall become effective April 16, 2019.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this 16th day April 2019.
(a%_4:zC\N\
for S. Daniel Smith
Interim Director, Division of Energy, Mineral and Land Resources
By the Authority of the Environmental Management Commission