NCG210303_DMR_20210716

Semi-annual Stormwater Discharge Monitoring Report jrC��v O
for North Carolina DEMLR General Permit No. NCG210000
Date submitted 8/16/2021 �G
CERTIFICATE OF COVERAGE No. NCG210303
FACILITY NAME Mackev's Ferry Sawmill Inc.
COUNTY Washington
PERSON COLLECTING SAMPLES N/A
LABORATORY Pace Analytical Services Lab Cert. # 381
Comments on sample collection or analysis:
SAMPLE COLLECTION YEAR 2021 (!cNFIERPER �T��NG
SAMPLE PERIOD ❑ Jan -June ®July -Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply ❑SA
®Other WS-V: SW
PLEASE REMEMBER TO SIGN ON THE REVERSE 4
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?'
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Chemical Oxygen Demand
Total Suspended Solids
Benchmarks =__>
-
-
120 mg/L
100 mg/L or 50 mg/L°
1
07/28/21
1.50
55.1 mg/L
6.0 mg/L
2
07/28/21
1.50
52.8 mg/L
6.5 mg/L
1 Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
' For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
3The 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.
`-A sample was unable to be collected during the sampling period.
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: 8/1/2013-7/31/2018 SWU-245, last revised 7/31/2013
Page 1 of 2

Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month.
® No discharge this period ?2
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/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 rer 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 ANYONE OUTFALL? YES ❑ NO Ej
IF YES, HAVE YOU CONTACTED THE DEMLR REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an orlainal and one coov of this DMR. including all "No Discharae" reports, within 30 days of receipt of the lab results for at end of monitorina period
in the case of "No Discharae" 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 r sponsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware t4ai-jheT ag ' n icant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of ermittee) (Date)
Permit Date: 8/1/2013-7/31/2018 SWU-245, last revised 7/31/2013
Page 2 of 2