NCG140156_2021 DMR_20210802

PROCESS WASTEWATER — Semi -Annual Discharge Monitoring Report
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140156
FACILITY NAME: Southern Concrete Materials
SAMPLE COLLECTOR: Jeff Lamm
CERTIFIED LABORATORY: ETS Lab # 600
Lab #
LIMIT VIOLATIONS? YES []NO
Part A: Wastewater Monitoring Reauirements
SAMPLE COLLECTION YEAR: 2021
SAMPLE PERIOD: ®July -December January -June
COUNTY: Buncombe
PHONE NO.: ( )
ADD TO LISTSERVE? YES ®NO EMAIL:
DISCHARGING TO CLASS: []SA []HQW []PNA Trout ®Other
OPTIONAL INFO:
Outfall No.
Date Sample
1
Collected
(mm/dd/yr)
Type of Wastewater
Z
(VE, RM, MD)
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
Non -Polar
Oil & Grease
using method
1664 SGT-HEM6
(mg/L)
Discharge
Duration
(minutes)
Total Flow
(gallons/day)
-
-
6-93,4
303,5
53
(15)6
1
7-8-21
VE, RM, MD
6.8
3.1
N/A
<5.0
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 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.
I 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 saltwaters.
Permit Date: 8/1/2017-06/30/2022 Last Revised 07/27/17
Page 1 of 2

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.
e 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 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.
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 significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
Jeff Lamm 8/2/2021
(Signature of Permittee) (Date)
Permit Date: 8/1/2017-06/30/2022 Last Revised 07/27/17
Page 2 of 2