NCS000598_Application_20190625

Airgas.
an Air Uquide company
June 18, 2019
State of North Carolina Department of Environmental Quality,
REOF-
Energy, Mineral and Land Resources
"191)
1612 Mail Service Center,
JUN 5 2019
Raleigh, NC 27699-1612
DENR-LAND QUALITY
Attention: Suzanne McCoy
STOtRI'VIA'ATER PCERPil i TING
Stormwater Program Assistant
Subject: The application for an NPDES Permit for Stormwater Runoff
Discharges Associated with
Industrial Activities
Airgas USA, LLC — Mebane, NC ASU
Mebane, Alamance County, North Carolina
Dear Ms. McCoy:
Airgas ITSA, i,I C (Airgas) is submitting the enclosed application for a new individual National Pollutant
Discharge Elimination System (NPDES) permit for stormwater runoff discharge associated with
industrial activities at the above referenced site. The permit application package includes:
1. EPA Form 1 with a topographic map;
2. EPA Form 2F with a site drainage map; and
3. Permit application fee in the amount of $860 payable to "NCDEQ"
Please note that as instructed, an electronic copy of the permit application package is separately emailed
to your attention at [e-mail].
General Planned Activities and Anticipated Production Date:
Airgas is in the process of constructing an Air Separation Unit (ASU) plant facility (SIC 2813) in
Mebane, Alamance County, North Carolina and is scheduled to begin its production on September 30,
2019 and supply products to its customers in the region.
Airgas will use the atmospheric air as the raw material and separate it into liquid Nitrogen, liquid Oxygen
and liquid Argon (SIC 2813) at the ASU plant. The products will be stored in the cryogenic tanks prior to
distribution to the customers via tank trucks. Trucks will be parked at the facility and maintained indoors
in a maintenance shop.
Because it is anticipated that the production begins on September 30, 2019, we would like to receive the
permit before the end of September 2019. In accordance with our communications with a staff member in
your office prior to this application submission, it is understood that the permitting process typically takes
two to three months. Thus, we trust that this application is submitted to your office in a timely manner
and that the information presented in the permit application is sufficient for issuance of the permit.
Stormwater RunoffManaQement System and Outfalls:
In accordance with the facility's design drainage plan, all the stormwater runoff from the industrial
activity areas will flow into the onsite wet pond first and the onsite wet pond effluent will be discharged

Airgas Mebane ASU
June 18, 2019
Page 2 of 7
to a surface water, a tributary (Tinnis Creek) to Moadams Creek via a 18" HDPE pipe provided with a
riprap apron at the pipe outlet and will follow the drainage pattern in the area. This wet pond effluent
pipe outlet is Outfall 001 for the NPDES permit application.
There is another outfall via a 6" HDPE pipe. The rainwater collected in the infiltration area at the south
end of the facility is discharged through this pipe. The infiltration area is largely covered with grass
where no industrial activities are expected to occur. This 6" HDPE pipe outlet is identified as Outfall 002
for the reporting purpose in the permit application.
Discharge Information —Analytical Data in Section VII ofform 2F.-
The enclosed NPDES permit application is for a new facility that is being constructed. Therefore, there
are not sampling and analysis for pollutants listed in Part A of Section VII of Form 2F. The values
reported for Outfall 001 in Part A of Section VII of Form 2F are some values observed in similar ASU
operations at different locations of Airgas. No values are reported for Outfall 002.
If you need an additional information and/or have any questions, please contact Mr. Stephen Kim, our
consultant, at [phone] or at genesisenviromnental(a,comcast.net or me at [phone] or at
rod.st.i ohn(&airgas.com.
Sincerely,
Rodne t. Joh
Project Manager
cc: File
Enclosures: As Noted

Please print or type in the unshaded areas only.
Form Approved. OMB No. 2040-0086.
ws ►2v
FORM
U.S. ENVIRONMENTAL PROTECTION AGENCY
I. EPA I.D. NUMBER
=rEPA GENERAL INFORMATION
a ]IA C
Consolidated permits Program
F "C 000 D
S �Q�
GENERAL
(h�iead the "en6i'al lnsit uc tiom" belbl e sta) ang.)
i 2 13 14 15
LABEL ITEMS GENERAL INSTRUCTIONS
j� If a preprinted label has been provided, affix it in the
0designated
�'°"�" i _, space. Review the information carefully; if any of It
I. EPA I.D. NUMBER is incorrect, cross through it and enter the correct data in the
appropriate fill-in area below. Also, if any of the preprinted data
C" Is absent (the area to the left of the label space lists the
III. FACILITY NAME PLEASE PLACE IN ht� in that should appear), please provide it in the proper
fill-in area(s) below. If the label is complete and correct, you
V. FACILITY MAILING D(j-LAND QUALITY need not complete Items I, III, V, and VI (except VI-B which
be Complete items if
ADDRESS must completed regardless). all no label
p nL I"�
STQRMWATER PERMITTING has been provided. Refer to the instructions for detailed item
VI. FACILITY LOCATION descriptions and for the legal authorizations under which this
data is collected.
II. POLLUTANT CHARACTERISTICS
INSTRUCTIONS: Complete A through J to determine whether you need to submit any permit application forms to the EPA. If you answer "yes" to any questions, you must
submit this farm and the supplemental farm listed in the parenthesis fallowing the question. Mark "X" in the box in the third column if the supplemental form is attached. If
you answer "no" to each question, you need not submit any of these forms. You may answer "no" if your activity is excluded from permit requirements; see Section C of the
instructions. See also, Section D of the instructions for definitions of bold-faced terms.
Mark
"X"
Mark
"X"
ves
No
FORM
ATTACHED
SPECIFIC QUESTIONS
ves
No
FORM
ATTACHED
SPECIFIC QUESTIONS
A. Is this facility a publicly owned treatment works which
B. Does or will this facility (either existing or proposed)
results in a discharge to waters of the U.S.? (FORM 2A)
X
include a concentrated animal feeding operation or
X
aquatic animal production facility which results in a
16
17
1s
s
20
21
discharge to waters of the U.S.? (FORM 2B)
C. Is this a facility which currently results in discharges to
waters of the U.S. other than those described in A or B
�/
X
D. Is this a proposed facility (other than those described in A
or B above) which will result in a discharge to waters of
X
above? (FORM 2C)
2L
23
&
the U.S.? (FORM 2D)
20
25
27
E. Does or will this facility treat, store, or dispose of
F. Do you or will you inject at this facility industrial or
hazardous wastes? (FORM 3)
X
municipal effluent below the lowermost stratum
X
containing, within one quarter mile of the well bore,
underground sources of drinking water? (FORM 4)
31
32
33
23
29
30
G. Do you or will you Inject at this facility any produced water
H. Do you or will you Inject at this facility fluids for special
or other fluids which are brought to the surface in
processes such as mining of sulfur by the Frasch process,
connection with conventional oil or natural gas production,
X
solution mining of minerals, in situ combustion of fossil
X
inject fluids used for enhanced recovery of oil or natural
fuel, or recovery of geothermal energy? (FORM 4)
gas, or inject fluids for storage of liquid hydrocarbons?
(FORM 4)
34
35
36
37
1 38
1 39
I. is this facility a proposed stationary source which is one
J. Is this facility a proposed stationary source which is
of the 28 industrial categories listed in the instructions and
X
NOT one of the 28 industrial categories listed in the
X
which will potentially emit 100 tons per year of any air
instructions and which will potentially emit 250 tons per
pollutant regulated under the Clean Air Act and may affect
year of any air pollutant regulated under the Clean Air Act
40
4,
42
43
44
45
or be located in an attainment area? (FORM 5)
and may affect or be located in an attainment area?
(FORM 5)
III. NAME OF FACILITY
c
1 SKIP I Airgas USA, LLC
15
16 - 29
30 69
IV. FACILITY CONTACT
A. NAME & TITLE (last, first. & bile) B. PHONE (area code & no.)
c
2
Rodney St. John, Project Manager ( 3 ) 4 4-1 30
15
16 45 46 48 1 49 51 1 52- 55
V. FACILTY MAILING ADDRESS
A. STREET OR P.O. BOX
J3c 314 Lake Latham Road
5 16 45
B. CITY OR TOWN
C. STATE D. ZIP CODE
C 2 302
41 42 47 51
Jc
4
Mebane
15
16 40
VI. FACILITY LOCATION
A. STREET, ROUTE NO. OR OTHER SPECIFIC IDENTIFIER
C5 2025 Deve opment Center Drivee
5 16 45
B. COUNTY NAME
Alamance
46 ]0
C. CITY OR TOWN
D. STATE
I E. ZIP CODE
F. COUNTY CODE (ifknown)
c
6
M b ne
C 1
2 3 2
1'u
16 40
41 42
4] 51
52 -54
EPA Form 3510-1 (8-90) CONTINUE ON REVERSE

rr rrn2wIllK.618S110211111110SIZ1111
VII. SIC CODES 4-dt it, in order of riorit
A. FIRST
B. SECOND
c
(specify) industrial Activities
7
(specify)
7
15
2813
16 19
NA
15 iG 19
C. THIRD
D. FOURTH
(specify)
c
(specify)
7
15
NA
16 19
NA
15 116 19
VIII. OPERATOR INFORMATION
A. NAME
B.Is the name listed In Item
c
Airgas USA, LLC
VIII-A also the owner?
8
© YES ❑ NO
,5
16 55
66
C. STATUS OF OPERATOR (Enter the appropriate letter into the answer box. i( "Other, "specify.)
1D.. PHONE (area code & no.)
F = FEDERAL
M =PUBLIC (other than federal or state)
P
(specify)
S = STATE
P = PRIVATE O = OTHER (sper.�)
H.6
19 19 21 22 28
E. STREET OR P.O. BOX
2 A Development Center I Drive
26 55
F. CITY OR TOWN
G. STATE
I H. zip CODE
IN, INDIAN LAND
i❑tYESfacility located
g
Mebane
NC
27302
©nNnOdianlands?
sz
15
16 40
Al 4z
bT - 51
X. EXISTING ENVIRONMENTAL PERMITS
A. NPDES Dischar es to Stafare Water
D. PSD Air Emissions from Pro osed Sources
c
g
r
N
i
NA
c
g
r
p
i
�18
NA
15
16
i]
18 30
15
16
17
30
B. UIC Under 'oundhs'ecttono Fluids
E. OTHER (specify)
c
r
NA
c
r
i
NA
(Spec if}}�)
9
U
9
,5
i6
17
18 30
15
1 16
17 118
30
C. RCRA Hazardous Wastes
_
E. OTHER s ecifv
C
r
c r i (specify)
g
R
NA
g 1 NA
15
1 Is
17
11. 30
15 16 17 10 30
XI. MAP
Attach to this application a topographic map of the area extending to at least one mile beyond property boundaries. The map must show the outline of the facility, the
location of each of its existing and proposed intake and discharge structures, each of its hazardous waste treatment, storage, or disposal facilities, and each well where it
injects fluids underground. Include all springs, rivers, and other surface water bodies in the map area. See instructions for precise requirements.
XII. NATURE OF BUSINESS (provide a brief description)
Airgas USA, LLC (Airgas) will separate the stomospheric air, produce liguid Nitrogen, liquid Oxygen and liquid
Argon (SIC 2813), and distribute products to its customers in the region via tank trucks. Airgas will have
truck maintenance operations inside a maintenance shop at the site location.
C G 1\1F-
DENR-LAND QUALITY
STORMWATER PERMITTING
XI II. CERTIFICATION (see instructions)
1 certify under penalty of law that I have personally examined and am familiar with the information submitted in this application and all attachments and that, based on my
inquiry of those persons immediately responsible for obtaining the information contained in the application, I believe that the information is true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, includiN the possibility of fine and imprisonment.
A. NAME & OFFICIAL TITLE (iyne orprint)
B. SIGNATU
C. DATE SIGNED
Thomas Strigner, Vice President,
Production & Project Execution AMG
r�i Z40 p
COMMENTS
FOR OFFICIAL USE ONLY
JCC
15
i6 �i5
EPA Form 3510-1 (8-90)

ATTACHMENT TO EPA FORM 1
TOPOGRAPHIC MAP
(USGS MAP Mebane Quadrangle, North Carolina, 7.5 Minute Series, 2016)

rY�491?�,ST p W CEWER 5-
t� fl�l�' �*�xr
L J l I
Airgas Site Location a ,
Tovvji
p wdY . - r f Hurdle
REST
0. 44+ cvsV.1
Dri
w
f
SCALIE 1:24 000
IyE 1 U.5 0 KILOVErMS I 2
4!' %
*'S7NILS ° Gk low 5w fl 1dIE:f'ER5 Ow 7M
4 an' 0.5 0 i
� 1HILES
inua a 1000 20100 3000' 4000 "go 6w . - 7w � MW 4000 Iom
UTNIGRIDAND 201; IWAGWT1C MUN FEET
DP. [1INA11.0N AT CENTER ar 'FLEET —
Source : Figure 1 TOPOGRAPHIC MAP
USGS Topo Map — Mebane Quadrangle, Airgas USA, LLC
NC 2016 2025 Development Center Drive, Mebane, NC 27302

Continued from the Front
Part C - list each pollutant shown in Table 2F-2, 2F-3, and 2F-4 that you know or have reason to believe is present. See the instructions for additional details and
requirements. Complete one table for each outfall.
Pollutant
and
CAS Number
(ifavailable)
Maximum Values
(include units)
Average Values
(include units)
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
NA
Part D — Provide data for the storm event(s) which resulted in the maximum values for the flow weighted composite sample.
1.
Date of
Storm
Event
2.
Duration
of Storm Event
(in minutes)
3.
Total rainfall
during storm event
(in inches)
4.
Number of hours between
beginning of storm measured
and end of previous
measurable rain event
5.
Maximum flow rate during
rain event
(gallons/minute or
specify units)
6.
Total flow from
rain event
(gallons or specify units)
NA
7. Provide a description of the method of flow measurement or estimate.
NA
EPA Form 3510-2F (1-92) Page VII-2

EPA ID Number (copy from Item 1 of Form 1) Form Approved. OMB No. 2040-0086
Outfall 002 1 Approval expires 5-31-92
VII. Discharge information (Continued from page 3 of Form 2F)
Part A — You must provide the results of at least one analysis for every pollutant in this table. Complete one table for each outfall. See instructions for additional details.
Pollutant
and
CAS Number
(ifavallable)
Maximum Values
(include units)
Average Values
(include units)
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Oil and Grease
NA
N/A
NA
NA
No industrial activities
Biological Oxygen
Demand (BOD5)
NA
NA
NA
NA
No industrial activities
Chemical Oxygen
Demand (COD)
NA
NA
NA
NA
No industrial activities
Total Suspended
Solids (TSS)
NA
NA
NA
NA
No industrial activities
Total Nitrogen
NA
NA
NA
NA
No industrial activities
Total Phosphorus
NA
NA
NA
NA
No industrial activities
pH
Minimum
Maximum
Minimum
Maximum
No industrial activities
Part B — List each pollutant that is limited in an effluent guideline which the facility is subject to or any pollutant listed in the facility's NPDES permit for its process
wastewater (if the facility is operating under an existing NPDES permit). Complete one table for each outfall. See the instructions for additional details and
requirements.
Pollutant
and
CAS Number
(if available)
Maximum Values
(include units)
Average Values
(include units)
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
NA
EPA Form 3510-2F (1-92) Page VII-1 Continue on Reverse

Continued from the Front
Part C - List each pollutant shown in Table 2F-2, 217-3, and 2F-4 that you know or have reason to believe is present. See the instructions for additional details and
requirements. Complete one table for each outfall.
Pollutant
and
CAS Number
(if available)
Maximum Values
(include units)
Average Values
(include units)
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
NA
Part D — Provide data for the storm event(s) which resulted in the maximum values for the flow weighted composite sample.
1.
Date of
Storm
Event
2.
Duration
of Storm Event
(in minutes)
3.
Total rainfall
during storm event
(in inches)
4.
Number of hours between
beginning of storm measured
and end of previous
measurable rain event
5.
Maximum flow rate during
rain event
(gallons/minute or
specify units)
6•
Total flow from
rain event
(gallons or specify units)
NA
7. Provide a description of the method of flow measurement or estimate.
NA
EPA Form 3510-2F (1-92) Page VII-2

ATTACHMENT TO EPA FORM 2F
SITE DRAINAGE MAP

N
O
N
M
v
C
m
y N
n -9 Cj)
* rn M
co
°na
p Z
3 n C)
M m
rr
� D
n
N
4
W
O
N
\
fill
sit
"\ N
CDP
It 'j /lit f t I
1
pq
flit
f f
r ff
,r ff
�� rf flfflr(
i
ffJf
I f l
jr
r r 1 jtl�
a9.4N.
11
1 I i6a �`\ter+
i{ e
\ - i
V
xlraxr� ��`r�-\ ��_+� 1 y�jj+•��1-i"�1 ---I I
Y tw
I Am
r d C)i/i
O CD Cp CJ1 O O O CD CJ1 O \ \ `� `\ '\ %i `v, \� ` '\ , 1 1 �, \ �t ►�1 `
O CD CO O O v O \ \'\ ' ``� \` \\t �� \�t \`} 1} 1 }t t } it t1t�41
v Cn O O Ln W
0 N n N
CD _ (D _
Cn Cn
R I
R f 11
F
P � '
f