NCS000329_MRO Copy MONITORING REPORT_20210513

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May 10, 2021
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Division of Energy Mineral and Land Resources
Attn: Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
Central Files: Tier 2 Monthly Monitoring -April 2021
lATI
P.O. Box 5030
2020 Ashcraft Avenue
Monroe, NC 28111-5030
Phone: [phone]
Fax: [phone]
Email: mike.mcmanusOatimetals.com
Attached, please find stormwater monitoring data for Permit No NCS000329. The originals and
one copy are included. The monitoring data is for the following monitoring schedule:
Analytical monitoring includes:
• Outfall #01 (B), commingled stormwater
• Outfall #02 (B), non -commingled stormwater
• Outfall #03 (B), non -commingled stormwater
If you have any questions or need additional information, please contact me at 704-289-4511
x3800. Thank you.
Sincerely,
2
Michael McMan
EHS Coordinator

-OATI
specialty Materials
ATI (Allvac) — Bakers Campus (BNO)
Stormwater Monitoring Report Form
Sample Date:
Sample Time:
Sample Location: e),,4
Stormwater Discharge Outfall # 01 (Commingled)
Drainage Area= 2,915,470 sq. ft. = 69 Acres
Impervious= 34%
Person Collecting Samples:
Laboratory Performing Analysis:
Analytical Techniques and Methods:
40 CFR Part 136
Results of Sample Analysis:
Parameter
Results (mg/1)
Benchmark Values (mg/I)
TSS
100
BOD
30
COD
1,7 0
120
Cadmium
0.003
Chromium
0.905
Total Calcium
915
Total Copper
0.01
Total Nickel
0.335
Total Zinc
0.126
pH
(std units)
6-9
Temperature
Deg. Celsius
Total Residual Chlorine
.017
Oil and Grease
15
Storm Date: Storm Duration: (Hrs.) Inches of Rainfall:
Duration of time preceding rain event exceeding 0.1": (Hrs.)
Estimated Flow Calculation:
Q=CIA
Q (Total) = Q (Pervious Area) + Q (Impervious Area)
Rev. 01
Date of Rev.: 1/22/2020

-'"I
Specialty Materials
ATI (Allvac) — Bakers Campus (BNO)
Stormwater Monitoring Report Form
Q (Tot., cfs) _ (A x inches rain/12 inches/ft. x 69 acres x .66) + (.9 x inches rain/12 inches/ft. x 69 x .34)
Q (Total, cfs) = 1.15180 x (Inches of rain) + 1.7595 x (Inches of rain)
cfs
Rev. 01
Date of Rev.: 1/22/2020

�I
Specialty Materials
ATI (Allvac) — Bakers Campus (BNO)
Stormwater Monitoring Report Form
Sample Date:
Sample Time:
lg�y
Sample Location: -
Stormwater Discharge Outfall # 02 (Non-
o
Commingled)
0
Drainage Area= 212,952 sq. ft. = 4.9 Acres
Impervious= 12%
�� o
Person Collecting Samples:
Laboratory Performing Analysis:
Analytical Techniques and Methods:
40 CFR Part 136
Results of Sample Analysis:
Parameter
Results (mg/1)
Benchmark Values (mg/1)
TSS
100
BOD
30
COD
120
Cadmium
, ^ , • 7-2,
0.003
Chromium
0.905
Total Calcium
915
Total Copper
0.01
Total Nickel
0.335
Total Zinc
0.126
pH
(std units)
6-9
Temperature
Deg. Celsius
Storm Date: Storm Duration: (Hrs.) Inches of Rainfall:
Duration of time preceding rain event exceeding 0.1": (Hrs.)
Estimated Flow Calculation:
Q=CIA
Q (Total) = Q (Pervious Area) + Q (Impervious Area)
Q (Tot., cfs) = (.4 x inches rain/12 inches/ft. x 4.9 acres x .88) + (.9 x inches rain/12 inches/ft. x 4.9 x .12)
Rev. 01
Date of Rev.: 1/22/2020

riAt,�%'I
spociiilty Materials
ATI (Allvac) — Bakers Campus (BNO)
Stormwater Monitoring Report Form
Q (Total, cfs) = 0.1437 x (Inches of rain) + 0.0441 x (Inches of rain)
cfs
Rev. 01
Date of Rev.: 1/22/2020

�"�I
Spucialt' Materials
ATI (Allvac) — Bakers Campus (BNO)
Stormwater Monitoring Report Form
Sample Date:
Sample Time:���
Sample Location: -
Stormwater Discharge Outfall # 03 (Non-
Commingled)
7o
d00%
Drainage Area= 336,580 sq. ft. = 7.8 Acres
Impervious= 15%
Person Collecting Samples:
Laboratory Performing Analysis:
Analytical Techniques and Methods:
40 CFR Part 136
Results of Sample Analysis:
Parameter
Results (mg/I)
Benchmark Values (mg/1)
TSS
100
BOD
30
COD
120
Cadmium
0.003
Chromium
0.905
Total Calcium
%
915
Total Copper
0.01
Total Nickel
0.335
Total Zinc
0.126
pH
(std units)
6-9
Temperature
Deg. Celsius
Storm Date:
Storm Duration:
Duration of time preceding rain event exceeding 0.1":
Estimated Flow Calculation:
(Hrs.) Inches of Rainfall:
(Hrs.)
Q=CIA
Q (Total) = Q (Pervious Area) + Q (Impervious Area)
Q (Tot., cfs) = (.4 x inches rain/12 inches/ft. x 7.8 acres x .85) + (.9 x inches rain/12 inches/ft. x 7.8 x .15)
Rev. 01
Date of Rev.: 1/22/2020

�,�%I
Specialty Materials
ATI (Allvac) — Bakers Campus (BNO)
Stormwater Monitoring Report Form
Q (Total, cfs) = 0.2210 x (Inches of rain) + 0.0878 x (Inches of rain)
cfs
Rev. 01
Date of Rev.: 1/22/2020

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