NCG120101 DMR SW (2)

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Qu lity��t7L5_
eneral Permit No. NCG120000
Date submitted sZ.�
CERTIFICATE OF COVERAGE NO. NCG120101
FACILITY NAME Mayo Steam Plant Monofill
COUNTY Person
PERSON COLLECTING SAMPLES Ronald Easley
LABORATORY Pace Lab Cert. # 667,633,40 & 12
Comments on sample collection or analysis:
* 42 hour rainfall event = 1.30"
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2015
SAMPLE PERIOD ❑ Jan -June E�July-Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply [:]SA
® Other Bowes Branch Class C
PLEASE REMEMBER TO SIGN
No discharge this period?2
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall Chemical Oxygen Demand
amount,
Inches3
Fecal Coliform
Total Suspended Solids
Benchmarks =__>
-
- 120 mg/L
1000 count per 100 mL
100 mg/L or 50 mg/L4
001
10/28/2015
* 1.30" <12.5
54.7
4.9
002
10/28/2015
* 1.30" 19.0
69.8
12.1
003
10/28/2015
* 1.30" 15.0
38.2
7.0
1 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.
4 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 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".
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: 11/1/2012-10/31/2017 SWU-248, last revised 10/25/2012
Page 1 of 5

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG120000
Date submitted �!E
CERTIFICATE OF COVERAGE NO. NCG120101
FACILITY NAME Mayo Steam Plant Monofill
COUNTY Person
PERSON COLLECTING SAMPLES Ronald Easley
LABORATORY Pace Lab Cert. # 667,633,40 & 12
Comments on sample collection or analysis:
* 42 hour rainfall event = 1.30"
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2015
SAMPLE PERIOD ❑ Jan -June ❑x luly-Dec
or ❑ Monthly) (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply ❑SA
Fx]Other Bowes Branch Class C
PLEASE REMEMBER TO SIGN 4
No discharge this period?z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches
Arsenic
Selenium
Boron
Benchmarks =__>
-
-
mg/L
mg/L
mg/L
001
10/28/2015
* 1.30"
0.00083
0.00028
<0.0250
002
10/28/2015
* 1.30"
0.00041
0.00017
0.0255
003
10/28/2015
* 1.30"
0.00380
0.00044
0.1120
1 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.
4 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 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".
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: 11/1/2012-10/31/2017 SWU-248, last revised 10/25/2012
Page 2 of 5

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG120000
Date submitted // Lxo
CERTIFICATE OF COVERAGE NO. NCG120101
FACILITY NAME Mayo Steam Plant Monofill
COUNTY Person
PERSON COLLECTING SAMPLES Ronald Easley
LABORATORY Pace Lab Cert. # 667,633,40 & 12
Comments on sample collection or analysis:
* 24 hour rainfall event = 1.30"
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2015
SAMPLE PERIOD ❑ Jan -June x❑luly-Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply [_]SA
❑x Other Bowes Branch Class C
PLEASE REMEMBER TO SIGN 4
F-1 No discharge this period?'
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
inches pH
Conductivity
(Mayo Plant Lab)
Conductivity
(Pace Lab)
Benchmarks =__>
-
- S.U.
S/m
S/m
001
10/28/2015
* 1.30" 8.12
0.007384
0.00836
002
10/28/2015
* 1.30" 6.93
0.007811
0.00838
003
10/28/2015
* 1.30" 7.95
0.020710
0.02400
1 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.
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.
4 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 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".
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: 11/1/2012-10/31/2017 SWU-248, last revised 10/25/2012
Page 3 of 5

Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month.
F-1 No discharge this Period?z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
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 — 9.0 SU
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 ❑ NO®
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original and one copy of this DMR including 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."
(Signature of
Permit Date: 11/1/2012-10/31/2017
11/141185
(Date)
SWU-248, last revised 10/25/2012
Page 5 of 5