NCG210420_DMR_20220120

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina DEMLR General Permit No. NCG210000
Date submitted January20,2022
CERTIFICATE OF COVERAGE NO. NCG210 4 2 0 SAMPLE COLLECTION YEAR 202'
FACILITY NAME Enviva Pellets Ahoskie, LLC SAMPLE PERIOD ❑ Jan -June Q July -Dec
COUNTY Hertford or ❑ Monthly' (month)
PERSON COLLECTING SAMPLES Joe Harrell ] �� C 1`��UCHARGING TO CLASS ❑ORW ❑HQW [—]Trout❑PNA
LABORATORY Lab Cert. # I� 1 ❑Zero -flow ❑Water Supply [:]SA
Comments on sample collection or analysis: JAN 2 6 Z022 ❑Other QNSW, Ahoskie creek
-i=KfRAL FILES PLEASE REMEMBER TO SIGN ON THE REVERSE 4
-WR SECTION
Part A: Stormwater Benchmarks and Monitoring Results (Monitoring is required only if the facility stores exposed accumulations of sawdust, wood chips,
bark, mulch, or other similar material on site for longer than seven (7) days.)
No discharge this period?2
outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches'
Chemical Oxygen Demand
Total Suspended Solids
Benchmarks =__>
_
-
120 mg/L
100 mg/L or 50 mg/L
t
2
3
4
5
' Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
2 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.
° See General Permit text, Table 3, 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 mg/L". where XX is the numerical value of the
detection limit, reporting limit, etc. in mg/L.
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.
Permit Date: 8/1/2018-7/31/2023 SWU-245, last revised 8/6/2018
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Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month.
Q No discharge this period?z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Non -polar O&G by EPA
1664 (SGT-HEM)
Total Suspended Solids
Benchmarks =__>
_
-
15 mg/L
100 mg/L or 50 mg/L
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 9.
TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES ❑ NO M
IF YES, HAVE YOU CONTACTED THE DEMUR REGIONAL OFFICE? YES ❑ NO [f
REGIONAL OFFICE CONTACT NAME:
Mail an original and one
in the case of "No Discha
Attn: DWR Central Files
this
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
to:
all "No
within 30
lab results (or at end
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."
) as 'oZv ad,
(Da(e)
Permit Date: 8/1/2018-7/31/2023
SWU-245, last revised 8/6/2018
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