NCG080259_DMR_20201130

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Energy, Mineral and Land Resources General Permit No. NCGO80000
CERTIFICATE OF COVERAGE NO. NCG08 0 2 5 9
FACILITY NAME Epes Transport System, Inc.
COUNTY Guilford
PERSON COLLECTING SAMPLES Jeff Gerlock
LABORATORY Meritech
Date submitted November 2020
Lab Cert. # 165
Comments on sample collection or analysis:
SAMPLE COLLECTION YEAR 2020
SAMPLE PERIOD ❑ Jan -June Q July -Dec
RE�or ❑ Monthly' (month)
�'r7Q RGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
DEC 21 2070 ❑Zero -flow ❑Water Supply [:]SA
*Other c
CiEN i t":AL h'iLt
0WR SECTION PLEASE REMEMBER TO SIGN ON THE REVERSE 4
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new oil per month? ❑■ yes ❑ no (if yes, complete Part A)
Part A: Vehicle & Equipment Maintenance Areas Monitoring Requirements (If applicable) ❑ No discharge this periodz
Outfall No.
Date Sample Collected'
(mo/dd/yr)
24-hour rainfall amount,
Inches3
Non -Polar Oil & Grease
mg/L
Total Suspended Solids,
mg/L
New Motor or Hydraulic Oil Usage,
gal/mon
Benchmarks
_
-
15
100 or 504
-
Parameter Code
-
46529
00552
C0530
NCOIL
OF-1
11 /12/2020
1.80
<5
158
100
' Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
z For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
'The total precipitation must be recorded using data from an on -site rain gauge. Unattended sites may be eligible for a waiver of the rain gauge requirement.
a See General Permit text, Table 1, identifying the especially sensitive receiving water classifications where the more protective benchmark applies.
Note: Results must be reported in numerical format. For example, do not report Below Detection Limit, BDL, <PQL, Non -detect, ND, or other similar non -
numerical format. When results are below the applicable limits, they must be reported in the format, "<XX me/L", where XX is the numerical value of the
detection limit, reporting limit, etc. in mg/L. Conversely, where fecal coliform results exceed the dilution upper limit, report the result as ">XX".
Permit Date: 11/1/2018-5/31/2021 SWU-248, last revised 11/1/2018
Page 1 of 2

Part B: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable) ❑ No discharge this period'
©utfall
No.
Date Sample
Collected"
(mo/dd/yr)
24-hour rainfall
amount,
Inches'
Sample Collected'
ma/dd/yr
Total Suspended
Solids,
mg/L
pH,
Standard units
Non -Polar Oil &
Grease,
mg/L
Permit Limit
_
-
_
100 or SO4
6.0=- 9.0
15
Parameter Code
- "
46S29
-
COS30
00400
0QSS2
OF-1
11/12/2020
1.80
11/12/2020
158
6.10
<5.0
Footnotes from Part A also apply to this Part B
Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text.
FOR PART A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES Q NO
IF YES, HAVE YOU CONTACTED THE DEMLR REGIONAL OFFICE? YES Ej NO Q
REGIONAL OFFICE CONTACT NAME:
Mail an original coov of this DMR, includina all "No Discharge" reports, within 30 days of receipt of the lab_ results for at end of monitoring period in the
case of "No Discharge" reports) to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
of Permittee
12,1?112,;9 26--)
Date
Permit Date: 11/1/2018-S/31/2021 SWU-248, last revised 11/1/2018
Page 2 of 2

EC November 30, 2020 2��ryt " 1 Z020
r
Mr. Mike Glynn �� `s�CT� DES
Epes Transport System, Inc.
O�
3400 Edgefield Court
Greensboro, North Carolina 27409
Subject: Report of Semi -Annual Stormwater Inspection/Sampling — Second Half 2020
Epes Transport System, Inc.
3400 Edgefield Court, Greensboro, North Carolina
NCDEQ Certificate of Coverage #NCG080259
Dear Mike:
As requested and authorized by Epes personnel, Blue Ridge Geological Services, Inc. (Blue Ridge)
performed a semi-annual site inspection and stormwater sampling event at the subject site. The work was
performed in general accordance with the Stormwater Pollution Prevention Plan (SWPPP) prepared for the
subject site as well as the requirements of NPDES General Permit. Outlined below is a summary of the
field activities, laboratory results, and our conclusions and recommendations.
Field Activities
On November 12, 2020 Blue Ridge personnel mobilized to the site during a measureable storm event and
performed a stormwater inspection / sampling event. As shown on the attached inspection form, no
environmental issues were observed at the outfall or around the site during our inspection. Rainfall data was
obtained from the nearest weather station using Weather Underground. According to the website, the area in
the vicinity of the subject site received approximately 1.80 inches of rainfall during the storm event.
Blue Ridge personnel observed the stormwater discharge at one outfall (designated as OF-1). Field personnel
completed a stormwater discharge outfall (SDO) qualitative monitoring report form for the outfall. A copy of
the form is attached; the form should be placed in the back of the SWPP Plan or in a file at the facility. The
form should remain on site and does not need to be submitted to the NCDEO
Blue Ridge personnel collected a stormwater sample from Outfall OF-1. The pH of the sample was
measured in the field using an Oakton pH meter and recorded. The pH of the OF-1 sample was 6.10. The
sample was placed into laboratory -prepared containers (some with preservatives), labeled with sample
information, placed into a cooler containing ice, and transported to Meritech, Inc. Environmental Laboratory
in Reidsville, North Carolina for analysis. A completed chain of custody form was submitted with the
sample.
7356 Belmont Drive, Trinity, NC 27370 * Phone: [phone]

Report of Semi -Annual Stormwater Inspection/Sampling — Second Half 2020 November 2020
Epes Transport System, 3400 Edgefield Ct, Greensboro, NC page 2
Laboratory Results
The sample was analyzed for total suspended solids (TSS) by standard method 2540D and non -polar oil and
grease total petroleum hydrocarbons (TPH) by EPA Method 1664 (SGT HEM). As shown in Table 1 and the
attached laboratory report, the TSS of the OF-1 sample was 158 milligrams per liter (mg/L). No oil and
grease was detected in the sample. The results of the outfall sample (OF-1) were placed on the NCDEQ
Discharge Monitoring Report (DMR) form - see attached.
Conclusions and Recommendations
Blue Ridge personnel compared the analytical results to the benchmark values established in the Permit.
As shown in Table 1, TSS was detected in the stormwater sample from OF-1 at a concentration
above its benchmark value (100 mg/L). Since TSS was detected in the sample from Outfall OF-1 at a
concentration above the benchmark value, we recommend that an inspection of the outfall be conducted
as soon as possible to determine the possible cause(s) of the exceedance and engineering controls and/or
physical improvements be put in place to reduce the concentrations to within the benchmark ranges (Tier
One response). However, this exceedance is due to the high rainfall and flow during the sampling
event.
We recommend that two copies of the attached Discharge Monitoring Report form be submitted to the
NCDEO office in Raleigh by December 18 2020. We will perform the next semi-annual inspection event
(qualitative monitoring and stormwater sampling and analysis) at the facility before June 30, 2021.
We appreciate the opportunity to continue to assist you on this project. Please contact the undersigned if
you have any questions regarding this report or the project.
Sincerely,
Jeffrey L. Gerlock, L.G.
NC Licensed Geologist #1141
Attachments — Inspection Form, SDO Qualitative Monitoring Report Form, DMR Form, Summary Table,
Lab Report
7356 Belmont Drive, Trinity, NC 27370 * Phone: [phone]