NCG140119_DMR_20210128

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
0 Orig — Stale
CERTIFICATE OF COVERAGE NO. NCG14 0 119 SAMPLE COLLECTION YEAR: 2020 0 Copy— State
FACILITY NAME: Chandler Concrete Piedmont -Salisbury #114 SAMPLING PERIOD: ❑July -December ❑ January -June 0 Copy — Plant
PERSON COLLECTING SAMPLES: COUNTY Rowan 0 Copy— File
alytical CERTIFIED LABORATORY:Pace AnLab #633 ' `Q ADDiECFFO. It336) 226-1181
OPTIONAL INFO: FEB O QQISTSERVE? ❑YES ®NO EMAIL: _
cDFFWlARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other: WS-V B
Part A: Stormwater Monitoring Requirements
CENTko,
Outfall No.
Date Sample
Collected
(mm/dd/yrOR
NO FLOW)'
DW
PH
(Standard Units)
SECT;ON
TSS
(mg/L)
Tota I
Rainfall'
(in)
In Tier 2
Monthly Monitoring?
(Y/n)
# of Months in
Tier
Sampling
6-9z
100-3
1
NQD
N
N/A
NQD-No Qualified Discharge -
1 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 for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum Cleanout (MD). Reportmorethan
one type if the waste -stream is commingled.
3If 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 HQW 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 VMA 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 HQW 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
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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
k of Months in
No.
Collected
(Standard
method
Solids
Duration
4
Rainfall
Usage
Monitoring?
Tier
(mo/dd/yr)'
Units)
1664 SGT-HEM
(mg/L)
(minutes)
(in)
(gal/month)
(y/n)
Sampling2
(rng/L)
6-92
151
1002,3
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" reoorts) 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 penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
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of Permittee)
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Permit Date: 8/1/2017- 6/30/2022 Last Revised 7/27/18
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