NCG160226_MONITORING INFO_20180716

MRD
STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT N0.
/V
DOC TYPE
❑HISTORICAL FILE
er-NIONITORING REPORTS
DOG DATE
❑ � t% � � d -7
YYYYMMDD

July 6, 2018
Division of Water Quality JUL 16 2018
Attn: DWQ Central Files CE-NTl-AL i=li t
1617 Mail Service Center n+,r; f� ;� -' ioN'
Raleigh, NC 27699 - 1617
Re: Stormwater Discharge Outfall Monitoring Report (DMR)
Year 4, Period 2, Sample 8, 2018
Blythe Brothers Asphalt Company, LLC — North Plant (Mecklenburg County)
General Permit NCG160000; Certificate of Coverage Number NCG160226
Dear Stormwater Permitting Unit;
We respectfully submit the enclosed original and one copy of the Stormwater Discharge Outfall
Monitoring Report for Blythe Brothers Asphalt Company, LLC — North Plant under General
Permit Number NCG] 60000, Certificate of Coverage NCG160226. This submission is for
stormwater discharge sampling for Year 4, Period 2, Sample 8, 2018 (.January 1, 2018 —.tune 30,
2018) as outlined in Part I1, Section B of our stormwater discharge permit.
If you have any questions or comments regarding this Stormwater Discharge Outfall Monitoring
Report (DMR), please contact us at your convenience.
Sincerely,
�� ate, //�
Alec Blythe, Project Manager
Blythe Brothers Asphalt Company. LLC
Enclosures: Stormwater Discharge Outfall Monitoring Report (DMR), 1 original & 1 copy

Semi-annual Stormwater Discharge Monitoring Report DMR
for North Carolina DEMLR General Permit No. NCG160000 - Asphalt
Date submitted 07/06/2018
CERTIFICATE OF COVERAGE NO. NCG16 0 2 2 6
FACILITY NAME Blythe Brothers Asphalt Co., LLC - North Plant
COUNTY Mecklenburg
PERSON COLLECTING SAMPLES Ryan R. Osborne (INENCO. INC.)
LABORATORY PACE Analytical Services Inc. Lab Cert. # 40, 37712
Comments on sample collection or analysis:
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2018
SAMPLE PERIOD ❑X Jan -tune ❑ Juiy-Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
[]zero -flow ❑Water supply ❑SA
OOther C
PLEASE REMEMBER TO SIGN ON THE REVERSE •->
No discharge this period:
Outfall No.
Date Sample
Collected
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Total Suspended Solids
Benchmarks ===>
-
-
100 mg/L or 50 mg/L
SDO-001
06/26/2018
0.11
30.0
SDO-002
06/26/2018
0.11
49.6
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_rng/L", where XX is the numerical value of the
detection limit, reporting limit, quantitation 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: 10/1/2014-9/31/2019 SWU-252, last revised 9/17/2014
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,
Inches'
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 1, or Tier 3 responses. See General Permit text.
FOR PART A AND PART B MONITORING RESULTS:
+ A SINGLE BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDANCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES ❑ NO
IF YES, HAVE YOU CONTACTED THE DEMLR REGIONAL OFFICE AS REQUIRED BY THE PERMIT? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail an oriainol and one copv of this OMR, includina all "No Discharae" reports, within 30 days of receipt of the lob results (or at end of monitoring period
in the case of "No Discharae" reports) to:
Division of Water Resources
Attn: DWR 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 Permittee)
Permit Date: 10/1/2014-9/31/2019
7/9//S'
(Date)
SWU-252, last revised 9/17/2014
Page 2 of 2 ;`