NCG140119_DMR_20211026 (2)

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
0 Orig — Stale
CERTIFICATE OF COVERAGE NO. NCG14 0 1 1 9 SAMPLE COLLECTION YEAR: 2021 0 Copy— State
FACILITY NAME: Chandler Concrete Piedmont - Salisbury #114 SAMPLING PERIOD: ❑July -December ❑January -June 0 Copy — Plant
PERSON COLLECTING SAMPLES: Matt Daniel COUNTY Rowan 0 Copy — File
CERTIFIED LABORATORY:Pace Analytical Lab #633 PHONE NO. [phone]
OPTIONAL INFO: :Corrected Outfall desienation OF3 is SW ADD TO LISTSERVE? []YES ®NO EMAIL: _
DISCHARGING TO CLASS: ❑❑❑ SA HQW PNA ❑Trout ®Other: WS-V B
Part A: Stormwater Monitoring Requirements
Outfall No.
Date Sample
Collected
(mm/dd/yrOR
NO FLOW)'
PH
(Standard Units)
TSS
(mg/L)
Total
Rainfall°
(in)
In Tier 2
Monthly Monitoring?
IY/n)
riofMonths in
Tier
Sampling
-
-
6-92
1001"
-
-
-
3
NQD7/8/21
7.3
77.7
0.
N
N/A
Discharge due to storm event. -
NUV U5 ZU21
' If wastewater systems have not discharged in this quarter —report "No Flow" or "No Discharge' here. Please make sure to mark the sample quarter above.
2 Reportthe abbreviation forthetype of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning(VE), Raw Material Stockpiles(RM), Mixing Drum Cleanout(MD). Report more than
one type if the waste -stream is commingled.
3 If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DEMLR RO.staff notifies you to continue
monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwater
5 TSS limits are 20 mg/L for wastewater discharges to HOW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VIVA areas. TPH does not have a limit for wastewater, but instead is subject to
benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
7 Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HOW waters shall be set to 50%of the Summer 7Q10 Flow as per 15A NCAC 02B .0224. Permittees
who discharge wastewater to HOW waters shall obtain a Summer 7Q10 flow and report this information to DEMLR. If the permittee cannot obtain a Summer 7Q10 flow for the receiving waters at the
discharge location, the permittee shall notify DEMLR, and the DEMLR Regional Office may require an annual flow report on a case -by -case basis.
Permit Date:8/1/2017-06/30/2022 Last Revised 07/27/17
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month —averaged over a calendar Year.
Non -Polar Oil &
Outfall
Date Sample
pH
Grease using
Total Suspended
Event
Total
New Motor Oil
In Tier 2
Monthly
q of Months in
(Standard
method
Solids
Duration
Rainfall <
Usage
Tier 2
No.
Collected
Units)
1664SGT-HEM
(mg/L)
(minutes)
(in)
(gal/month)
Monitoring?
Sampling'
(mo/dd/Yr)'
(mg/L)
(Y/n)
6-92
152
1002"
1
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copy of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period in
case of "No Flow") 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 Walties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
of Permittee)
Permit Date: 8/1/2017- 6/30/2022
Last Revised 7/27/18
Page 2 of 2