NCG140099_DMR_20210429

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG14 0 0 9 9
FACILITY NAME: Chandler Concrete Company - SPARTA #505
PERSON COLLECTING SAMPLES: Sam Thompson
- EIVED
CERTIFIED LABORATORY:BLUE RIDGE Lab #275
MAY 10 2021
LIMIT VIOLATIONS? YES ❑ NO ❑
ILES
Part A: Wastewater Monitoring Requirements
1 QTR
A Orig — State
0 Copy — State
0 Copy — Plant
0 Copy - File
SAMPLE COLLECTION YEAR: 2021
SAMPLE QUARTER: ®Jan -March ❑April -June —]Jul-Sept ❑Oct -Dec
COUNTY: ASH E
PHONE NO. [phone]
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA []Trout ®Other: C
OPTIONAL INFO:
Outfall No.
Date Sample
Collected'
(mm/dd/yr)
Type of Wastewater
(VE, RM, MD)'
pH
(standard)
TotalSuspended
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
303,5
53
(15)6
-
-
1
03/31/21
VE RM MD
6.6
NO
ND
N/A
90
270
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 makes ure 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.
'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.
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 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 7Q10flow for the receiving waters atthe
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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