NCG140332_MONITORING INFO_20191212

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
lu C ILI U 33 a
DOC TYPE
❑ HISTORICAL FILE
C MONITORING REPORTS
DOC DATE
❑
YYYYMMDD

ial`Stormwater ischari a Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG140000
Date Submitted December 5, 2019
CERTIFICATE OF COVERAGE NO. NCG 140332
FACILITY NAME Powell's Ready Mix Concrete
COUNTY HALIFAX
PERSON COLLECTING SAMPLES 1 Frei/ SwSG
LABORATORY Pace Analytical Lab Cert. # 633
Comments on sample collection or analysis: pH measured infield by
Stormwater Services Group (Lab Cent #5054)
SAMPLE COLLECTION YEAR 2019
SAMPLE PERIOD ❑ Jan -June 0 July -Dec
or ❑ monthly'-- (month)
DISCHARGING TO CLASS ❑ORW ❑HCIW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply ❑SA
RECEIVED QOther C
DEC 12 2019 PLEASE REMEMBER TO SIGN ON THE REVERSE 4
'b
Did this facility perform Vehicle Maintenance Activities using more than SS.gaFnllo:0ofFriewimotor oil per month?
(it yes, report your analytical results in Part B below) llvvN 5ECTION
Part A: Stormwater Discharges from Areas of Facility with Concrete production activities
Outfall
No.
Date
Sample Collected,
mo/dd/yr
46529
00530
00400
Total Rainfall,
inches
Total Suspended Solids,
mg/L
pH,
Standard units
Benchmark
100
Within 6.0 — 9.0
001
02/11/19
0.68"
53.4
7.53
001
11/23/19
1 0.77"
503
1 7.62
Dart R• unhirta Maintananrp nranc Mnnitorinp Renuirements (if anolicable)
yes ✓ no
No discharge this period'
Outfall
No.
Date
Sample Collected,
mo/dd/yr
46529
00556
00530
Total Rainfall,
inches
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
Permit Limit
15
100
i For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 Last revised Nov 20• 2017
Page I of 2

STORM EVZiVT CHARACTERISTICS:
•
Date 02/11/19 (first event sampled this reporting period)
Total Event Precipitation (inches): 0.68"
Date 11/23/19 (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches): 0.77"
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 ANYONE OUTFALL? YES ❑ NO 0
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:
NCDEQ/ 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)
(Date)
Additional copies of this form may be downloaded at: http://portal.ncdenr.org/web/wq/ws/su/npdessw#tab-4
S W U-250
Last revised Nov 20, 2017
Page 2 of 2