NCG120065_DMR_20210120

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG120000
Date submitted January 20, 2021
CERTIFICATE OFCOVERAGE No. NCG12 0 0 6 5
FACILITYNAME Orange County Landfill
COUNTY
PERSON COLLECTING SAMPLES: Lee Clear
LABORATORY ENCO/PACE Lab Cert.#
Comments on sample collection or analysis:
Part A: Stormwater Benchmarks and Monitoring Results
f E LI 0 4 7101
SAMPLE COLLECTION YEAR 2020
SAMPLE PERIOD ❑ Jan -June ❑ July -Dec
or Monthly — December (month)
DISCHARGING TO CLASS[] ORW ❑ HQW❑ Trouo PNA
❑Zero-Flow❑Water Supply❑SA
❑Other
PLEASE REMEMBER TO SIGN ON THIE REVERSE—>
❑ No discharge this period72
Outfall No.
Date Sample
Collected
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Chemical Oxygen Demand
Fecal Colifonn
Total Suspended Solids
Benchmarks =__>
_
-
120 mg/L
1000 count per 100 ml
100 mg/L or 50 mg/L"
C&D
12/14/2020
1.15
-e5.4 mg/L
>_3200 count per 100ml
>_5.1 mg/L
MSW
12/14/2020
1.15
?91 mg/L
<_ 909 count per 100ml
<_ 166 mg/L
' 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.
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.
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 ma/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".
Note: If you report a sample value in excess of the benchmark, you must implement Tier IJ Tier 2.1 or Tier 3 responses. See General Permit text
Permit Date: 11/1/2012-1D/31/2017 SWU-248, last revised 10125/2012
t
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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/ddlyr)
24-hourrainfall
amount,
Inches'
Non -polar O&G/TPH by
EPA 1664 SGT HEM)Total
Suspended Solids
pH
Benchmarks =__>
-
-
15 mg/L
100 mg/L or 50 mg/L4
6.0-9.0SUI
C&D
12/14/2020
1.15
0 mg/L
2:5.1 mg/L
6.8 OSU
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 ATTHESAME OUTFALLTRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PARTII SECTION B.
• TIER3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER ATANY ONE OUTFALL? YES ONO O
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES NO
REGIONAL OFFICE CONTACT
Mail an orieinal and one copv of this DMR. includine all "No Discharee" reports. within 30 days ofreceint of the lab results (or at end of monitorine Deriod
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."
Permit Date: /1/2012-10/31/2017 ) SWU-248, last revised 10/25/2012
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