NCG140218 DMR SW (13)

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140218 SAMPLE COLLECTION YEAR: 2015
FACILITY NAME: Thomas Concrete of Carolina -Durham Plant SAMPLING PERIOD: ❑ July -December ® January -June
PERSON COLLECTING SAMPLES Susan Bostian COUNTY Durham
CERTIFIED LABORATORY ESC Lab # ENV 375 PHONE NO. [phone]
Lab # ADD TO LISTSERVE? []YES ®NO EMAIL:
OPTIONAL INFO: June Monitoring event DISCHARGING TO CLASS: [:]SA ❑HQW ❑PNA ❑Trout ®Other,
Part A: Stormwater Monitoring Requirements
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)'
pH
(Standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total
Rainfall ,
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2 Sampling'
-
-
6-92
1002,3
_
_
_
-
001
No Discharge
y
16
CENTRAI
FILES
DWR SK
TION
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HOW, Trout, and PNA waters where they are 50 mg/I.
° For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
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