NCG140461_DMR_20210709

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Resources General Permit No. NCG140000
Date submitted 07109l21
CERTIFICATE OF COVERAGE NO. NCG140 4 0 1 SAMPLE COLLECTIO YEAR 2021
FACILITY NAME Carolina Ready Mix SAMPLE PERIOD ■ .Jan -June 11 July -Dec
COUNTY Union or LJ Monthly' monk
PERSON COLLECTING SAMPLES Matt Synder DISCHARGING TO CLASS EORW HQW Trout EjPNA
LABORATORYSGS North America Inc. Lab Cert. # 57-3 C C� Zero -flow [Water Supply �SA
Comments on sample collection or analysis: RECEIVE -Li Other
JUL 19 2-0 PLEASE REMEMBER TO SIGN ON THE REVERSE 4
Did this facility perform Vehicle Maintenance Activities using more than(5lxkbi c�4 �knotor oil per month?[] yes ✓❑no
(if yes, report your analytical results in the table immediately below) DWR SECT
Part A: Vehicle Maintenance Areas Monitoring Requirements (If applicable) NOT APPLICABLE
dNo discharge this period'
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
pH,
Standard units
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6.0 -- 9.0
15
-
Part S: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (if applicable)
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
pH,
Standard units
Permit Limit
-
15
50 or 100 see permit
6.0-9.0
S©O-1
07102/21
Not Applicable
29.1
6.72
Measured pH
8.50
t For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April N, 2013
Page I of 2

STORM EVENT CHARACTERISTICS:
Date 07/02/21 (first event sampled)
Total Event Precipitation (inches): 1.5 inches
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches):
Note. If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text.
FOR PART A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART 11 SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES ❑ NO Q
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original and one copy of this DMR, Including all "No Discharge" reports, within 30 days of receipt of the lab results (or at end
In the case of "No Discharge" reports) to:
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
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 r 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
significan enalties for suJ miijng false information, including the possibility of fines and imprisonment for knowing violations."
re of
n-� z
(Date)
Additional copies of this form may be downloaded at: http:/(portal.ncdenr.org/web/wci/wsjsufnpdessw#tab-4
SWU-250
last revised April 11, 2013
Page 2 of 2

. ,:1rn•ar•e-..ti,.
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit, t �: c7rtal.ncilerir.cJ3/�veb�lr/tilyde5 stogy iti�1 a[rr/
Permit No.: N/c/ .!Ld/ 1 /4 / 0 / 0 /0 /0 / or Certificate of Coverage No.: N/C/G/!
Facility Name: CAROLINA READY MIX
County: UNION Phone No. [phone]
Inspector: r-N,-AA-S_,,Ac.• - �T
Date of Inspection: c ? 1-
Time of Inspection: 71 3
Total Event Precipitation (inches): I . S
Was this a "representative Storm Event" or "Measureable Storm Event" as defined by the permit?
(See information below.)
[Yes ❑ No
Please verify whether Qualitative Monitoring must be performed during a "representative storm
event" or "measureable storm event" (requirements vary, depending on the permit).
Qualitative monitoring requirements vary. Most permits require qualitative monitoring to be
performed during a "representative storm event" or during a "measureable storm event." However,
some permits do not have this requirement. Please refer to these definitions, if applicable.
A "representative storm event" is a storm event that measures greater than 0.1 inches of rainfall
and that is preceded by at least 72 hours (3 days) in which no storm event measuring greater than
0.1 inches has occurred. A single storm event may contain up to 10 consecutive hours of no
precipitation.
A "measurable storm event" is a storm event that results in an actual discharge from the
permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval is representative for local storm events during the sampling period, and the permittee
obtains approval from the local DWQ regional Office.
By this signature, I Fertify th* th# report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
Page 1 of 2
SWU-242, Last modified 7/31/2013

1. Outfail Description:
Outfall No. SDO-1 Structure (pipe, ditch, etc.)
Receiving Stream: EAST FORK TWELVE MILE CREEK
Describe the industrial activities that occur within the outfall drainage area:
MANUFACTURING OF CONSTRUCTION CONCRETE MATERIALS
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: 1-: +"-\
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil,
weak chlorine odor, etc.): l"s - e> `'' n"-
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is
clear and 5 is very cloudy:
1 2 (D 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in
the stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
(__) 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended
solids in the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
0 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes ON
8. is there an oil sheen in the stormwater discharge? Yes 5No
9. Is there evidence of erosion or deposition at the outfall? Yes �Ea-)
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition
may be indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242, Last modified 7/31/2013