NCG140087_DMR_20220124

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE NO. NCG14 O 0 8 7
FACILITY NAME: Chandler Concrete Piedmont- SILER CITY Pit #109
PERSON COLLECTING SAMPLES: RECEI�/�tl�
CERTIFIED LABORATORY: Lab # D
LIMIT VIOLATIONS? YES ❑ NO
Part A• Wastewater N
R."
JAN 311 202C
CENTRAL FILES
DUdR SE(TInNI
4 QTR
N, 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: CHATHAM336 PHONE NO. () 226-1181
ADD TOLISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HOW ❑PNA []Trout ®Other. C
OPTIONAL INFO:
„b,�yw
Non -Polar
Date Sample
p
Type of Wastewater
pH
Total Suspended
Settleable
Oil & Grease
Discharge
Total Flow
Outfall No.
Collected'
(VE, RM, MD)
(standard)
Solids
Solids
using method
Duration
g y) allons/da '
(gallons/day)'
(mm/dd/yr)
(mg/L)
(mL/L)
16645GT-HEM"
(minutes)
(mg/L)
-
-
-
6-93.4
303.s
53
(15)6
-
-
1
NO FLOW
VE RM MD
N/A
N/A
N/A
No Discharge this Period -
' If wastewater systems have not discharged in this quarter— report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter aoove.
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,
PH limits are6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
' 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.
` 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 beset 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/l/2017-06/30/2022 Last Revised 07/27/17
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