DAQ-2024-012153

333 W. Center Street . Nonh Salt Lake Utah 84054 . 801 .296.7700. www.bigwestoil.com
Septanber 11,2024
CERTIFIED MAIL
RETURN RECEIPT NO.9589 0710 527013183714 52
Bryce Bird, Director
Division of Air Quality
Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144820
Salt Lake city, utah 84114-4820
RE: MACT Subpart CC Periodic Report- I't Half 2024 (January
Dear Mr. Bird,
15,2024-July 14,2024)
In compliance with the reporting requirements of 40 CFR 63 Subpart CC, the following constitutes the
periodic report required by $63.655 applicable to Big West Oil, LLC (BWO). This submittal covers the
period from January 15,2024 - July 1,4,2024.
Should you have any questions regarding the contents ofthis report, please contact Faithe
Schwartzengraber at (80 I ) 296-77 63.
Sincerely,
Faithe Schwartzengraber
Environmental Manager
CC: CERTIFIED MAIL
RETITRN RECEIPT NO.9589 0710 52701318 3714 69
USEPA Region VIII
Mail Code SENF-AT
1595 Wynkoop Street
Denver, CO 80202-1129
Jerany Marsigli, UDAQ - Electronic Copy
UTAH DEPARTIUETT Or
sEP 1 7 202t,
DMSION OF AIR OI,IAUTY
B-2-10122
$63.655(e) MACT CC Reporting Requirements
I. Wastewater Provisions - $63.655(a)
In accordance with $63.655(a), BWO complies with the annual reporting requirements in $61,357(c). The total
annual benzene (TAB) quantity from facility waste is less than l0 Mg/yr, but equal to or greater than I Mg/yr. A
separate updated TAB report is submitted separately each year. There are no additional reporting requirements for
wastewater per 40 CFR 63.655(a).
II. Gasoline Loading Rack Provisions - $63.655(b)
In accordance with $63.428(h), excess emissions for the BWO bulk gasoline distribution are submitted in separate
Quarterly CEM Excess Emissions Reports. The quarterly reports were submitted on April 29,2024, and July 29,
2024.T\ere were no deviations from temperature operating parameters ($63.428(hxl) during the reporting period.
BWO complies with the reporting requirements for equipment leaks required in $63.428(h)(a) in a separate
semiannual report for equipment leaks. The l$ Semiannual2024M{CT CC - Equipment Leaks Report was
submitted on July 15,2024.
BWO utilizes a terminal automation system to prevent gasoline cargo tanks that do not have valid cargo tank vapor
tightness documentation from loading (e.g., via a card lock-out system). In compliance with the periodic reporting
requirements of 963.655(b), the table directly below summarizes exceptions to the vapor tightness provision for bulk
gasoline distribution at the facility.
[2] Each iretance ofa nonvo,por-tight g$oline cargo taak loading at lhe lacility in which the owner or operatorfailed to takc steps to asswe that
such cargo tank would not be reloaded at the facilig before vapor tighness doaunenlatlonfor that cargo lank was obtained.
13) Each reloading of a nonyapor-tight gasoline cargo tank dt the Jhcility before vapor tightness dmentationfor thot clrgo tank is obtained by the
facility in accotdance with !j63.422(cX2).
BWO does not include a loading rack in an emissions average therefore no additional reporting requiremants for
gasoline loading racks are required under subpart CC.
III. Marine Tank Vessel Loading Operation Standards - $63.655(c)
Not applicable. BWO does not have a marine vessel loading operation regulated under 40 CFR 63 Subpart Y and
Subpart CC.
IV. Equipment Leaks Standards - $63.655(d)
BWO is an existing source subject to the provisions of $63.648 for equipment leaks and has elected to comply with
the provisions 40 CFR 60 Subpart Wa in lieu of complying with Subpart H. In accordance with the reporting
requirements of 963.655(d)(l), BWO submits a separate semiannual report for equipment leaks subject to 40 CFR
63 Subpart CC. The lst Semiannual2024 MACT CC - Equipment Leaks Report was submitted on July 15,2024.
ll) Each loadinq ofa guoline cargo tankfor which vapor tighness dodlmentation hod not been previotsly obtained by the
V. Storage Vessels Periodic Report - $63.655(g)(1)
The following section contains applicable storage vessel information required in Periodic Reports. BWO is an
existing source complying with the Storage Vessel Provisions of $63.646 or $63.660. Therefore, in accordance with
63.655(gXl), information related to gaskets, slotted membranes, and sleeve seals is not required for storage vessels
that are part of existing sources and that are complying with $63.646.
a. Q63.646Internal Floatine Roof flFR) Storase Vessel Insnections - S63.655(eX2)
IFR Annual Tank isual with Failures Detected -
with 563.65Nd!(2)(l)(A)(l), alailure is d4iied 6 any tine in *hich the intemlflmtng mlis rct r.tting on the ilrlace of the liquid lrcide the stomge
ve$el snd is Mt restingoa the leg vpp*: or thoe is liquid on the/utingmf; or thesal is detrchedfrcn thc intmlfutngmf: or there are holes, tean, or
other openings in the sal or salfabic: or there ue visible gops bet*eq the sal and ,he wll of the samge vssel.
l2lIfanqreilionisutlizedinrccordanceriththeprcisioreof $63.120(a)(1)ofsubpnG, lheertry"E teuionUtlifrd'itrc,edin,heNatureof RepairColw.
fhe nat Pqiodic Repon will identily ,he v6el: irclude the dwilranon sprilied in 563.120(a)(1) ol tubpan G: and detcib. the dote the storuge vessel w
mpried with the date and mrure of the repair of repair.
In addition, details for any failures identified during the annual inspections, as applicable, can be found in
Attachment B - $63.655(gX2)(i)(A). See Attachment C for extension requests, if applicable -
$63.6ss(eX2Xi)(AX3).
IFR Internal (Out-of-Service)with Failures Detected -
lll Pwsunt with 963.655(9(2Xi)(B)(l), A failwe is defined as any time in which the internalJlMting roof has defects; or the primary seal has
holes, tears, or otheropenings in the seal or lhe sealfabric: or the secondary seal (ifone has been installed) has holes, tears, or other opening
in the sedl or the seal fabric: or, for a storage ves.tel that is parl ofa new source, tlc gaskets no longer close ofthe liquid surfacefrom the
atmosphere: or,for a storage vessel thal b part ofa nN sowce, lhe slolled membrane has more than a l0 percent open area,
b. $63.646 External Floatine Roof Storase Vessel Inspections - Q63.655(eX3)
EFR Seal with Detected Failures -xi)
lll Primry Seal Gap Faihues ocau when lhe acanilaled area of gaps between the yessel wall and the primary seal aceed 2 l2 sqrmre
centimeters per meter ofvessel diameter and the width ofany portion ofany gap shall exceeds 3.81 centimeters (!i6j.120(b)(i)) and where a
metallic shoe seal is in rce, and one end ofthe metallic shoe does nol 6rend into lhe slored liquid and lhe other end extend a minimt m veilical
distance of6l centimelers above the stored lQuid svfrce: or where otherfailwes such as holes, tears, ot olher openings in the shoe, seal
fabric, or seal envelope were delecled.
l2l Ifan utercion is utilked in accordance with the provisiou of{63.120(b)(7)(ii) or (b)(8) ofSubpart G, the entry "Ertewion Utilized' is
noted in the Nafire of Repair Column. The next Periodic Report will identfu the vessel: inchtde the doamentation specilied in !i63.120(a)(4) of
subpart G: and describe lhe date lhe storage veEsel wN emptied with the date and nanae ofthe repair ofrepair.
)
ii. EFR Seconda Seal Ga with Detected Failures -
Ul Secondary Seal Gap Faihtes ocar when the acaundated area ofgaps between the vessel wall and the secondary seal *ceed 2 1.2 square
centimeters per meter of vessel diameter and the width of any ponion of any gap exceeds 1.27 centimeters (i63.l20AXaD md when secondary
seab are fowd that do not complelely cover the sgnce fuweet the roof edge or are fotnd to have holes teus, or oth* openings in the seal of
seal fobric (P 6 3. I 2 0(b)(6)).
l2l Ifan extension is utilized in accordance with the provbions of{63.120(b)(7)(ii) or (b)(8) ofSubpart G, the entry "Extension Utilized' is
noted in the Nahre ofRepair Cohmn, The net Periodic Repoil will identify the vessel: inchde the doanmentalion specifred in i63. I 20(a)(4) of
nbpart G; and describe lhe date the storage vessel was emptied with the date dnd ndfioe of the reryir of rcpait.
In addition, the Seal Gap Calculations can be found in Attachment B, if applicable, when failures were
detected during the Seal Gap Measurements - $63.655(g)(3X0(A). See Attachment C for extension requests,
if applicable - $63.6ss(g)(3xi)(B).
c. 863.660 Floating Roof (EFR & IFR) Inspections (initial fill. annual tank-top. internal) with
Detected Failures - Q63.655(eX2Xii) & (3Xii)
U\ Ptrcunt with 563.1063(d)(l)(i) through (d)(l)(iv) of subpart lflf, insryction failwes are defined as stored liquid on the floating root: holes
or tears in the primary or secondary seal (ifone is present); Jlmting roofdech deckfltings, or rim seals that are notfinctioning as designed:
failwe to comply with the operational requirments in $63.1063(b): Gaps of more than 0.32 centimeters ( th inch) between any deckftting
gasket, seal, or wiper and any surldce that it is intended to seal.
l2l lfan extewion is utilized in accordance with the provisions ofi63.1063(e)(2) ofsubpart WW, the entry "Exteraion Utilized' is noted in the
Nanrre of Repair Cohmn. The next Periodic Report will inchde the doa.menldtion specifred in S6l.1063(eX2) ofsubpart WW.
ln addition, a copy of the inspection record required by$63.1065(b)of subpart WW is included in
Attachment B, if applicable, when an inspection failure occurs in accordance with the reporting provision in
$63.6ss(eX2XiO(B) or (3Xi0(A).
d. $63.655(g)(5) - Storage Vessels complying by installing a Closed Vent System and Control Device
BWO does not utilize closed vent system and control devices for compliance with the Group I Storage
Vessel provisions of $63.646 or 963.660. Therefore, periodic reporting requirements for this provision are
not applicable for the current reporting period.
VI. Miscellaneous Process Vents Periodic Report- $63.655(gX6)
For miscellaneous process vents (MPVs) tbr rvhich continuous pararrleter ntonitors are required by this subpart,
periods olexcess emissions are identitled in this section of the Periodic Report and are used to determine compliance
with the emission standards.
For purposes of f 63.655(g)(6)(iii), the fbllorving table provides the required intbrmation tbr which a Group I MPV
stream was detected in the bypass line or diverted from the required control device either directly to the atmosphere
or to a control device that does not comply rvith the requirentents in 5163.643,ur.
Forpurposesof ts63.65r,*)(6),thefbllowingtableprovidestherequiredinlbnnationtbrGroup I MPVexcess
entissions events, if applicable, for the current reporting period. BWO complies with N63.643(a) fbr Group I MPVs
and voluntarily routes most Group 2 MPVs to a tlare meeting the requirements of $s\63.670 and 63.67 l. BWO
reports flare infonnation as specified in rs03.65,t,*r( I l) in this periodic report.'I'herefbre. e.xcess emissions reporting
tbr a nunrber of the operating parameters in-l'able l0 olsubpart CC for Group I Miscellaneous Process Vents do not
apply to the f-acility.
l2l .lt opt'tttttIq lttu uho all pilot llon.'s ol o llur! ok'dlrs.'ttt.
wluu trtottitorinq dttla \'!r. ilol uiltclttl.sholl be incltulul ir tltL' Periodic Rrlitil't.
4
MACT CC - Group I Miscellaneous Process Vent - Diverted Flow from Required Controls - $63.655(gxQ(iii)
Date Time Duretion Estimate of the
Volume of Gas
Organic HAP
Concentration
in the Gas
Mass Emissions of Organic
HAP that Bypassed the
Control Device
Nonc kr Rcpotl NA NA NA NA NA
MACT CC - Group I MPV
Excess Emissions Periodic Reporting
$63.5ss(sx6xi) & (iD
For miscellaneous process venls, excess emissions are reporred for the operating pmmeters spccified in table l0 ofsubpart CC unless other site-specific paramete(s)
have been approved by the operating permit authority.
Group I MPV
ldendlicrtlon
Strr
t
Date
Start
Time
End
Drte End Tlme
Norc to Rcport N,\NA N,\NA
Cbeck lhe ADoroorlate Bor (lfeoolicrble)
Groupl MPV
ID
monitored
parameters
out of range
tlt
all pilot
IIames
rbrent
for a
flarel2l
<75Y" of
bourly
monitoring
data
avaitablel3l
data
compressio
n with
insuflicient
data l'l
Ilow
diverted to
atmosphere
from the
control
devlce
flow
diverted to a
non-
compliant
control
devlce
bypess flow
Indicator
not
operating
bypass
valve found
not closed
or seal
changed
$63.655
GX6)(ixA)
$63.655
GX6)(ixB)
063.655
GX6)(ixc)
$63.655
GX6)(iXD)
$63.655
GXO)(ii)
$63.655
GX6)(ii)
$63.655
(eXo)
(ii)
!61.644
(cX2)
Notrc lo
Rcporl
NN NA NA NA NA NN NA NA
VII. Periodic Report of Performance Tests for Determination of Compliance - $63.655(g)(7)
No performance tests were conducted during the reporting period that demonstrated a change from Group 2 to
Group I nor for demonstrating compliance of a new emission point subject to Subpart CC.
YIII. Heat Exchange Systems Periodic Report - $63.655(gX9)
The periodic reporting requirements for Heat Exchange Systems are summarized in the table below. Monitoring
is conducted monthly in accordance with 963.654(c)(a)(i); therefore, the total strippable hydrocarbon leak
action level is 6.2 ppmv.
!53.65(rXeXv)
For crcb ddeycd reprlr, Hcn00crdoo ofttc nonlbrllg hcrdon rrrodrtcd
wltt tbo h* br rhlch rGp.lr b ddryr4 lhc drb wtco rle d&y of rcprlrb{r!,ttc&tG th€ rqdr f crpccaa !o bceonplcd 0lthch.l(b mt
rcprtftd durlrytte npordagphdl thc ffid rr[prbh ]ydrocrrtor
celccltrrdoo eld drto of *h uooltorlo3 cvcnt condoc&d on thc d&yod
rrgdr durlag ttc rqordry pcrlod ud el cr{nrta of tlc pobntld rtrlpprbh
bydrocerbon oobrlor ovcr &c rcporflgperlod.raodrtcd ittt Gcddsycd
rcpdr.
Not applicable, there were no
delayed repairs for the
rcporting period.
IX. Quarterly Reports for Emission Points - $63.655(g)(8)
Not applicable. BWO does not utilize the emissions averaging provisions of 963.652.
X. Pressure Relief Devices (PRD) Periodic Reporting - $63.655(gX10)
a. S63.655(sX10Xi) - PRD with instrument readinss of 500 pom or greater (863.648(iXl))
For pressure relief devices in organic HAP gas or vapor service, pursuant to $63.648(i)(l), BWO is required to
comply only with paragraphs $63.648(iXl) and $63.6a8(X2) for the pilot discharge vents and bonnet vents that
are not routed through a closed vent system to a control device, back into the process, or to the fuel gas system
as described in $63.648(i)(4). For the above-described vents, BWO did not detect any instrument reading of 500
ppm or greater during the reporting period.
b. S63.655(exl0)(ii) - PRD Monitorine Demonstratine Compliance (863.648(iX2))
BWO is compliant with the applicable operating requirements in $63.648(i)(l) and pressure relief requirements
in $63.648CI)(2) for potential leaks from pilot-operated PRD discharge vents and balanced bellows PRD bonnet
vents. Routine instrument monitoring is conducted as specified in $60.a85(b) or $63.180(c), and as applicable,
no later than 5 calendar days after the pressure reliefdevice returns to organic HAP gas or vapor service
following a pressure release to demonstrate that the pressure relief device is operating with no detectable
emissions (instrument reading of less than 500 ppm).
c. Q63.655(sxl0Xiii) - Pilot-Operated PRDs Atmos. Release of 72 lbs. of VOC/dav or sreater
For pilot-operated pressure relief devices in organic HAP service, there were no pressure releases to atmosphere
through the pilot vent that equals or exceeds 72 pounds of VOC per day during the reporting period. The
duration of pressure releases through the pilot vent with the estimate of the mass quantity of each organic HAP
released will be reported if the limit is exceeded.
d. S63.655(sXl0Xiv) - PRDS Subiect to 863.648(iX3) - Release reportins il RCA & CA
The primary release valves for all applicable pilot-operated and balanced bellows PRDs at the faciliry are routed
through a closed vent system to a control device, back into the process, or to the fuel gas system as described in
$63.648(i)(4). Therefore, BWO is not required to comply with the new provisions for pressure release
management as provided in paragraph $63.648(iX3).
XL Periodic Report for Flares subject to $63.670 - $63.655(gX11)
a. Q63.655(sXl lXi) - Each l5-minute block durine which there was at least one minute when regulated
material is routed to a flare and no oilot flame is present.
b. S63.655(e)(ll)(ii) - Visible emission records as specilied in parasraph (iX9XiiXC) of this section for each
period of 2 consecutive hours durins which visible emissions exceeded a totsl of 5 minutes.
Abrence of Pllot Flemc &
> I Mln Flow Regulrted Meterlrl
Abccncc ofPllot Fleno &
> I Mla Flow Rcauhed Mrtcrld
!;rceeoatrce
Drte & Tlme
(2 Hr Blocks)
Esdmrtcd Vblble Emlcslonr > 5
Mln for eech perlod of 2
comecudve hours
Ercceducc
Drtc & Tlue
OErBlockr)'
Drdrrcd Yblblc Eubdooe > 5
Mh for crch pcrlod of 2
eorrecndvc hourr
31612024 l8:00-20:00 l0 min 5/2912024 l2:00-14:00 20 min
3/1112024 8:00-10:00 6 min 512912024 l4:00-16:00 7 min
5ll5/2024 12:45-14:45 5 min 5/29n024 l6:00-18:00 5 min
5/1512024 l4:45-16:45 6 min 5130n024 l6:30-18:30 l5 min
5126/2024 l0:00-12:00 8 min 513012024 l8:30-20:30 6 min
512612024 l2:00-14:00 9 min 6/4/2024 7:30-9:30 l0 min
5129/2024 l0:00-12:00 l4 min 6/4/2024 9:30-l l:30 6 min
Esdmated Vblble Emlsslonr > 5
Mln for eech pertod of 2
consecudve hours
Ertlmrtcd Vklblc Enlrrlorr > 5
Mla for erch perlod of2
"713/2024 1 I :00-13:00 'l/llD024 l7:00-19:00
c. SO3.6ss(eXllXiii) The l5-minute block periods for which the applicable operatins limits
specified in Q63.670(d) throueh (fl are not met.
i. Flare Tip Velocitv Limit Exceedances - Q63.670(d)
For purposes of 963.655(gXl lXiii), the following table provides periods when the Flare Tip Velocity
operating limits in $63.670(d) were not met.
ii. Combustion Zone Ooeratine Limit Exceedances - $63.670(e)
For purposes of the periodic reporting requirements of $63.655(gXl lXiii), the following table provides
periods when the combustion zone operating limits in $63.670(e) were not met.
Erceodence Drte & TIme
(15 Mh Blockc)
Erceedrnce Dste & Tlme
(15 Min Blockr)
Exceedrnce Dete & Tlme
(15 Mln Blocks)
< 270 btn/scf
(15 Mln Blocks)
Ercedmce Dete & Tlme
(I5 MIa Blocls)
< 270 btdrcf
(15 Mla Blockr)
2ll2l2o24 08 15 l9l 313112024 06:30 145
211212024 08:30 t29 ll3l/2024 06:45 l4l
2t13t2024 08:00 20't 3l3l/2o24 O7:M)l4l
2ll3/2024 08:15 232 3131D024 07:15 143
211412024 05:45 258 313l/2024 07:30 t47
2/14/2024 06:00 265 3131t2024 07:45 148
3/3lDO24 O6:15 155 3131D024 08:00 t46
Exceedrnce Drte & Tlme
(15 Min Blocks)
< 270 btu/scf
(15 Mln Blocks)
Ercccdrncc Dete & Tlmc
(15 MIn Blocb)
< 270 btuficf
(15 Mh BlocLr)
311712024 06:15 5117t2024 O5:15
4l14/2024 06:15 5ll7/2024 05:30
4/1412024 06:30 5/17 t2024 05:45
iii.
BWO does not have a flare with perimeter air assist so the dilution operating limits and reporting
provisions in $63.670(0 do not apply to the facility.
d. Q63.655(sXllXiv) For Flarine events meetins the criteria in $63.670(oX3)
e. S63.655(eXllXiv)fl)) Results of RCA and Corrective Action
Alternative Test Methods
BWO uses both ALT-124 and ALT-13l for monitoring the net heating value on the monitoring systems
associated with both flares (X-913 and X-1800). These methods are included in Attachment A.
Performance Evsluation for Flare NHV:
Not applicable for the current reporting period.
XII. Delayed Coking Unit Periodic Report - $63.655(gXl2)
Not applicable; BWO does not operate a delayed coking unit.
XIII. Maintenance Vents Periodic Report - S63.655(gX13)
Pursuant to the maintenance vents periodic reporting requirements in $63.6a3(c), the following table will provide
any releases during the reporting period exceeding the applicable limits in 963.643(c)(l). The table below also
fu lfi lls reporting requirements established in $ 63. 65 5 (gX I 3 ).
g.
Root Ceure Andwfu & Correcdve Acdon
The South Flare smoking event did not exceed the flare's smokeless capacity. No root cause analysis rcquired.
The South Flare smokine event did not exceed the flare's smokeless caoaciw. No root cause analvsis reouired.
The South Flare exceeded smokeless capacity from 5D212423:00 to 5123/24 00:30 and maintained compliant flare tip velocity.
Presence of visible emissions could not be determined due to lack of ambient
063.555
G)(l3Xr)
163.655
kXl3X!)
t63.655
GXl3xii)
963.6s5
GXt3XD
!6r.655
GXt3x|ti)
ldcedicrdoo oftho
MrhtcnraccVcot (MIV)
Equlpmairorvcd
bytf. MV
D.ioOpced
bAbo.DL.rs
TlnoOpcrcd
to Atuo.Dtcrc
LEJ.%
@.trrt ofAbo'. wodng
T466 Butamer Stabilizer Tower zil5t2024 l5:00 0o/o
T407 Crude Preflash Tower Fractionator 242/2024 l9:30 0o/o
D-402 Crude Desalter 2fi3t2024 3:30 0o/o
D42t Cas Plant Deisobutanizer Accumulator 2/14/2024 4:25 0o/o
T420 Gas Plant Depropanizer Tower zil4t2024 22:32 0Y"
T-61I Reformer Unifiner Stripper Tower 2/t'7t2024 0:00 0o/o
T-621 Reformer Platformer Stabilizer Tower 2/t7/2024 l:30 0%
D6l5 Reformer Naphtha Splitter Accumulator 2^8t2024 I :15 0%
R-600 Reformer Unifiner Reactor 2trcr2024 20:00 0%
R-601 Reformer Platformcr Reactor No. I 2^5t2024 2l:00 0o/o
R-602 Reformer Platformer Reactor No. 2 2n5t2024 2l:00 0%
R-603 Reformer Platformer Reactor No. 3 2^st2024 2l:00 0o/o
T-613 Reformer Naphtha Splitter Tower 2n7t2024 I l:00 0o/o
T-621 Reformer Unifiner Stabilizer Tower 2n7D024 5:30 0o/o
TK-90 Wastewater Equalization Tank 7/tDO24 8:00 0%
BWO has not utilized the options in $63.6a3(c)(l)(iv) or $63.643(cXlXv). Therefore, there are no additional
reporting requirements for the Maintenance Venting provisions.
XfV. Notification of Compliance Status Changes - $63.655(g)(14) & 563.655(0
^. Updated NOCS - Storase Yessels Q63.655(fl(1Xi)
For purposes of $63.655(0(6) and $63.6400X3), BWO provides the following updates to the Notification
of compliance status report.
b. Updated NOCS - Miscellaneous Process Vents MPY) Q63.655(O(l)Oi)
For purposes of $63.655(0(lxi0, BWO provides an updated Notification of Compliance Status for
Miscellaneous Process Vents if applicable for the reporting period in the following table.
lll Group I miscellaneorc prxus vent mw a mbellaneout procest vatfor which the total orgmic HAP concentration is grutil thm or
eqwl to 20 parts per million by voltne, and the total volatile otgattic compotud emissions are grcalet than or eqwl to j3 kilograns per dayfor
sisting sowces and 6.8 kilograns per dayfor nu sowca al lhe oullet ofthe final recovery device 6fany) and prior to any control daice and
prior lo dbcharge to lhe dtmospherc.
l2l Group 2 niscelhneorc process vent mearu a miscellaneovt prccess venl that does not meet the defrnition ofa GrotE I miscellareorc
process vent.
ll The date indicated b lhe month and year of the firsl degusing and cleaning activity Jbr an existing floating roof storage vessel not atrently
complianl These lanl(s will achieve compliance the n6t time the tank b removedlrom snice prior to starfi.p.
UTAH DEPARTMENI OF
ENVIRONMENTAL QUALITY
sEP 1 1 2024
DIVISION OF AIR QUALITY
Attachment A
Net Heating Value Alternative Test Methods ALT-I24 & ALT-l3l
n"*.H*,o
LYJ
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
RESEARCH TRIANGLE PARK. NC 27711
Mr. Chuck DeCarloMarketingManager ttU 0 5 20i3
Extrel CMS. t-t-('
575 Epsilon Drive, Suite 2
Pittsburg. PA I 5238-2838
N'lr.'l'ony Slapikas
Product Manager tbr Mass Spectrometry
AMETEK. Energy & Process Division
150 Freeport Road
Pittsburgh. PA 15238
Dear Mr. DeCarlo and Mr. Slapikas.
OFFICE OF
AIR OUALITY PLANNING
AND STANDARDS
I am writing in response to your letter dated August I 8. 201 7. requesting approval flor usc of
process mass spectrometers as part of an alternative to testing proccdures utilizing calorimeters
or gas chromatographs to measure Net Hcating Value (NIIVvri) in f'lare vent gas as required
under 40 CFR Part 63. Subpart CC - National Emission Standards fbr f{azardous Air Pollutants
lrom Petrolcum Refineries. The owner or operator of tacilities subject to Subpart CC must
measure flare vent gas composition to determine NHVvr; in units of British Thermal Llnits per
standard cubic tbot (BTU/SCF). This BTLI/SCF determination may be performed using a
calorimeter capable of continuously measuring. calculating, and recording NHVv6 at standard
conditions (40 CFR 63.670 (iX3)) or equipment that determines the concentration of individual
components in the flare vent gas (40 C['R 63.670 (iXl)), such as a gas chromarograph, an<j, if
desired. may directly measure the hydrogen concentration in the flare vent gas ftillowing the
mcthods provided in'10 CFR 63.670 (iX4). All monitoring equipment must meet rhe applicable
nlinimunt accurac). calibration and quality control requirements spc.citied in Table l3 and
$63.671 of Subpart CC.
In your letter. you propose to use a process mass spectrometer analyzer and the tbllowing
nleasurement approach as an alternative to nteasure NHVvr;:
I ) 'l'he ou'ner or operator of the affected facility will perform a pre-survey to determine the list
and concentratiott ol'components that are present in flare vent gas f'eed. This pre-survey will
be used in parl to:
a) Determine an appropriate analysis method lbr the site-specitic refinery flare vent gas;b) Create a list of vent gas components to bc included in calibration gas cylinders to be usecl
to evaluate the quality of the measurement procedure used to determine N[lVvr;;c) Definc calibration standards to be prepared by a vendor at a certified accuracy of 2
percent and traceahle to NIST: and
d) Perfbrrn an initial calibration to identifly mass liagment overlap and response factors lbr
the target compounds.
lntemet Address (URL) r htp l/v4,'1r.€pa.gov
H.cycl.d/Becycl.bl. . Prlnlod wlth Vegetable Oil Basod lnks on Recycl€d Papor (Mlnlmum 25% Postconsurner)
2
2l The process mass spectronreter will be calibrated using calibration gas standards consisting
of a mix of the contpounds identifled in the site specifrc flare gas pre-survcy.3) During flare gas analysis. compounds that are not identified during the pre-.survey and that
have mass lragments identical to the compounds found during the pre-survey w.ill be
included in the calculation of NI-lVvr;.
4) Calibration error (C'E) fbr each component in the calibration blend will be calculated using
the lbllorving equation: r _ rcE="^= "u xloo
\\'herc , 'u
Cn, - Al'crage instrument response. (ppm)
C. : C.""linder gas value or lag value. (ppm)
5) The arerage instrument CE for each calibration compound at any calibration concentration
must not diffbr by more than l0 percent tiom the cylinder gas value or tag value.6) For each set of triplicate injcctions at each calibration concentration fbr eich calibration
compound. anv onc introduction shall not deviate more than 5 percent from the averagc
conccntration measured at that level.
Your supporting inlbmration included Method 301 calculations that showed acceptable bias ancl
precision w'hen vou nreasured a mixture of gases from a vendor certified gas cylinder. your
request also includes refercncc to facilities needing to monitor flare gas composition
continuously to effectively maintain f'lare etlicicncy rvhile compensating lbr changes in the flare
gas composition.
'*'ith this letter. r,re are approving your request to substitute continuous process massspectromctry firr continuous gas chromatography as allowed in 40 cFR 63.670 and 63.671predicated on both your proposed use of these process mass spectrometers as described aboveand the additional provisos listed below:
l) Youmustmeettherequirementsin40CFR63.6Tl (eXl)and(2)includingT'able l3requirenrents lbr Net Heating Value by Gas Chromatograph.2l You mal' use thc alternative sanrpling line temperature aliow,ed in 40 CF R 63. Subpart CC.Tablc 13. under Net Heating Value by Gas Chromatograph.:i) You must meet applicable Perfbrmance Specilication-9 (40 CFR parr 60. appendix B)requirenlents tbr initial continuous monitoring system acceptanceinclucling. but not limited
to:
o Perlbrming a multi-point calibration check at three concentrations following thcproccdure in Section 10. I : ando Pcrfbrming periodic process mass spectrometer calibrations as directed for gas
chromatographs in 40 CFR 63. Subpar-t CC. Table 13.4) You ntal'augment the minimum list of calibration gas components found in 40 CpR63.671(e) with compounds fbund during the pre-survey as needed to develop a site-specificanall'sis rnethod.
J
5 ) F'or unknown gas components that have similar analytical mass fragments to calibrationcompounds. you may report the unknowns as an increase in the ovJrlapped calibration gascompound.
6) For unknown compounds that do not producc mass fragments that overlap calibrationcontpounds. you may use the response fhctor tirr the nearest molecular weight hydrocarbon inthe calibration mix to quantify the unknown component's NHVv<;. This req"uirement parallelsthe requirements in 40 cFR part 63.671 (e)(3) foi gas chromatographs.7) You may use thc response factor for n-pentane to quantity ony ,rkno*n componentsdetected with a higher molecular weight than n_pentane.
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8) You must meet all other applicable generic requirem.nts of (ig63.670 and 63.671 fbrmeasurement of NHVvc (i.e., measurement requirements not ipecifically targeted to gaschromatographs).
9) A copl'of this approval lettcr must be included in the report lbr each testing program wherethese alternative testing procedures are applied.
Since this alternative-test method approval undcr 40 CFR 63.7 (f) is appropriate fbr use at alllacilities subject to 40 cFR 63, Subpart CC, we w.iil announce on EpA;s web site(hltp's:/rwww.epa.got"/emc/broudly-appliccthle-approved-ulternarive-test-methocls) that thealtemative method is broadly applicable to determination of NHVr,<; under this subpart.
If I'ou have any questions regzrrding this approval or need further assistance, please coltact RayMerrillat [phone] or merrill.rul,montl{a1epa.go\,.or Robin Segallar (9lq) 541-0g93 or
:; e ga| l. ro h i n(Qepa. got,.
Sincerely,
41.r| , ) r i nA /\lR-- i l r/,-^II t-*'- S M ]-
)
Stetfan M. Johnson. Group Leader
Measurement Technology Group
Geni Garw.ood, EPA/OAQPS/SPPD
Maria Malave. EPA/OECA/OC
Brcnda Shine, EPA/OAQPS/SPPD
trPA Regional Testing Contacts
,"*'X*,,-
tYs
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
RESEARCH TRIANGLE PARK, NC 27711
lvlr. Tim Goedeker
Senior Principal Environmental Consultant
Phillips 66
2331 CityWest lllvd. 5685
flouston. TX 77012
Dear Mr. Goedcker:
OFFICE OF
AIR OUALITY PLANNING
AND STANDARDS
I am u.riting in response to your letter dated September 26.2018. requesting approval tbr
alternatives to requirements in 40 CF'R 63, Subpart CC - National Emission Standards lbr
Hazardous Air Pollutants lrom Petroleum Retlneries (Subpart CC). and by retbrence. 40 CIrR 60.
Appendix B. Perlbrmance Specification 9 (PS 9) fbr determining Net Heating Value (NHV).
You request using *10 percent agreement of the totalcalibration cylinder NI-lV as an alternative
to the PS 9 requirement that specifies calibration and calibration check individual compound
agreement of + l0 percent with cylinder certified tag values. You are requesting this alternative
tbr broad application to af lected thcilities u'hich use Gas Chromatograph (GC) and/or Mass
Spectrometer (tv{S) technology for composition and corresponding NHV determinations required
under Subpart CC.
In your letter. you request the tbllowing specific alternatives to the quality assurance procedures
required in PS 9 and $$63.671(eX2) and (e)(3 ) when you demonstrate compliance with Subpart
CC:
l) Single daill' mid-level calibration check error to be calculated based on the total N[{V ot'
a ce(itred calibration gas mixture. The instrument response tbr NHV shall not vary by
more than l0 percent from the total Nt{V of the certitied calibration gas mixture.
2) Quarterll' multi-point calibration (see Table l3 of Subpart CC) error to be calculated
against the total NHV of the certitjed calibration gas mixtures (i.e.. low-. mid-. high-
level). The average instrument response tbr total NHV shall not vary by more than I0
percent tiom the total Nt{V of any of the certified gas mixtures.
Your rationalc tbr proposing thesc altcmative procedures is based on the tenant that NI{V is the
lactor utilized to determine compliance with the Subpart CC flare combustion efliciency
re'quirement. -lhese alternative procedures also simplily the calibration procedures fbr sites that
elect to use them. You provided calibration check data fbr both GC and MS NHV determinations
that show the comparability of quality control on a per compound basis r,r'ith quality control on a
total NIIV basis.
lntemet Address (URL) ' htQ://www'epa gov
Recycled/R.cyclabl. . pdnted wnh Veg€lable Oil Basod lnks on Rocycbd Pap6r (Minlmum 259i, Poslconsumer)
You request these alternative procedures fbr use at Phillips 66 BP tacilities subject to Subpart
CC and provitle example faciiities including: Billings Refinery located at 401 S 23"1Street.
Billings. MT-. 59101: Ponca City Refinery located at 1000 S Pine Street. Ponca City, OK, 74601:
and the Wood River Refjnery located at 900 S. Central Avenue, Roxana. IL. 62084.
With this letter. w,e are approving your request to use the relative percent error of total NttV
measured versus the certified cylinder tag value fbr total NI IV as the measure of agreement tbr
both the daily calibration and quarterly multi-point audits when using GC or MS tbr f'lare f uel
tl'ed NHV requirements in Subpart CC with the tbllowing provisos:
I ) Certifjed gas standards must be prepared consistent with the requirements in
$63.67 I (e)(2 ).
2) You must use certilied calibration gases that meet the requirement in Section 7.1 ot'PS 9
for daily calibration checks.
3) You must use performance audit gases that nreet the requirements in Section 7.2 of PS 9
tbr y'our quarterly multi-point calibration audits.
4) I'hc measured NHV relative error lbr quarterly multi-point calibration audits must be
rvithin l0 percent of the certified cylinder gas tag value lbr NHV. NHV calculations must
be based on the individual component properties in Table l2 of Subpart CC. This
requirement replaces the compound-specific relative error requirement fbr performance
audits in Section 7.2 of PS 9.
5) Ivlid-leveldaily calibration standard measurements mLrst also be w,ithin l0 percent of the
certitied of the cylinder gas tag value fbr NHV. This requirement replaces the compound-
specific relative error requirement for daily calibration in Section 10.2 of PS 9.
You must include a copy of this approval letter in the report lbr each testing program or periodic
reporting pcriod where these altcrnative testing procedures are applied.
Since this alternative test method approval under 40 CFR 63, Subpart CC, is appropriate tbr use
at all tacilities subject to Subpart CC that must determine flare combustion efticiency, we will
announce on EPA's website (at https://v'v'u'.epu.govt'emc/hroudll'-upplicuble-approved-
alternutiye-te:;t-rnethods) that our approvalof this alternative is broadly applicable to 40 CFR 63.
Subpart CC. Should the alternative approvals authorized in this letter be superseded by tbrmal
actions to revise 40 CI'-R 63. Subpart CC, this approval may'be rescinded.
Ifyou have any questions regarding this approval or need turther assistance. please contact Ray
MerriII at (9I9) 54l-5225 or memi\[e-mail]'.
Steffan M. J
Sincerely.,.
Measurement'l'echnology Group
3
Jennifer Ahlskog, Phillips 66 Rodeo Refinery
Gerri Carwood, EPA/OAQPS/SPPD
Sri Kanukolanu, Phillips 66 Wood River Refinery
Maria Malave, EPA/OECA/OC
Dave Pavlich, Phillips 66 Principal Environmental Consultant
Ray Pilapil, Illinois Environmental Protection Agency
Brenda Shine, EPA/OAQPS/SPPD
EPA Regional Testing Contacts
DIVISION OFAIR OUALTTY