NCG140138 DMR WW 20210811

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PROCESS WASTEWATER —Discharge Monitoring Report
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140138 SAMPLE COLLECTION YEAR.
FACILITY NAME: Gre stone Concrete Products Inc. SAMPLE PERIOD: ❑July -December January -June
SAMPLE COLLECTOR:/���N/�[� REGE 14 SAMPLE FREQUENCY: Quarterly ❑ emitannually ❑
CERTIFIED LABORATORY:�i Lab # 9 Z j9UNTY: Vance
PIS-vZ4 Lab# PHONE NO.: 252-438-5144
% C'rN j R AL. EIUM TO LISTSERVE? ❑YES FIND EMAIL:
LIMIT VIOLATIONS? YES ❑ NO ❑ C;+,,<IR ScCTIUNCHARGING TO CLASS: ❑SA ❑HQW ❑PNA []Trout ❑Other(
L*121114Wt1Rf01410;
Part A: Wastewater Monitoring Requirements
Outfall No.
Date Sample
Collected 1
(mm/dd/yr)
Type of Wastewater
(VE, RM, MD) ,
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
Non -Polar
Oil & Grease
using method
1664SGT-HEM6
(mg/L)
Discharge
Duration
(minutes)
Total Flow
(gallons/day)'
6_93.4
303$
53
(IS)6
_
-
-
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.
z 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.
Permit Date: 8/1/2017-06/30/2022 Last Revised 08/09/17
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A pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
S 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.
Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall beset 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.
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 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 s . nib' nt penalties for su mitting false information, including the possibility of fines and imprisonment for knowing
violations."
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