NCG140095_DMR_20210128

PROCESS WASTEWATER — QuarterlyDischarge Monitoring Report 0 Copy State
g g p Copy —State
GENERAL PERMIT NO. NCG140000 0 Copy — Plant
4 QTR 0 Copy - File
CERTIFICATE OF COVERAGE NO. NCG14 0 0 9 5 SAMPLE COLLECTION YEAR: 2020
FACILITY NAME: Chandler Concrete Company - DURHAM Pit# 603 SAMPLE QUARTER: ❑Jan -March ❑April -June ❑Jul -Sept ❑Oct -Dec
PERSON COLLECTING SAMPLES: Woods I�COUNTY: DURHAM
CERTIFIED LABORATORY:PACE ANALYTICAL Lab #37738 R CoC C EI V E L! HONE NO. [phone]
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
LIMIT VIOLATIONS? YES ❑ NO ® FEB 0 g P021 DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA []Trout ®Other: WS-IV NSW
Part A: Wastewater Monitoring Requirements
CENTRAL FILES OPTIONAL INFO:
DWR SFCTtnnl
Outfall No.
Date Sample
Collected'
(mm/dd/yr)
Type of Wastewater
(VE, RM, MD)z
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
Nan -Polar
Oil&Grease
using method
1664SGT-HEM c
(mg/L)
Discharge
Duration
(minutes)
Total Flow
(gallons/day)'
-
6-93.4
303.5
53
(15)6
-
1
11/13/19
VE RM MD
7.8
ND
N A
N/A
120
N/A
2
11/13/20
VE
7.8
ND
N/A
N/A
120
N/A
Discharge was result of rain event. - SW comingles
with Process Water
'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.
' Report the abbreviation for the type 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.
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 saltwaters.
6TSS 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.
' 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 HQW 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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MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR AT END
OF MONITORING PERIOD IN CASE OF "NO FLOW") TO:
Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUSTSIGN 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 subm tong false information, including the possibility of fines and imprisonment for knowing violations."
of Permittee)
Permit Date:8/1/2017-06/30/2022
( te)
Last Revised 07/27/17
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