-------
PB©i?©SEIB SUSIES
process control' atone. The
cost for caustic addition to the scrubber
Ss small where the casistic is not part of
•fche make-up in the kraft causticlzing
system. Accordingly, the proposed stand-
ard of 5 ppm TRS, four-hour average,
would require both the best process con-
&rols for lime kiln operation and caustic
addition to the scrubber, or an equivalent
system.
In developing the proposed standards,
KPA carried out six tests for participate
emissions from lime kilns. In each case
the control device for participate matter
was a medium pressure drop scrubber,
She most widely used control technique in
4he domestic industry. However, one do-
mestic kraft pulp mill controls particu-
late emissions with an electrostatic pre-
cipltator. Based on design parameters
and emission data supplied by the opera-
tor of this ESP, this system achieves an
emission level significantly below that
determined by EPA for medium pressure
drop scrubbers. However, the waste gases
from the digester system and multiple-
effect evaporator system, which could
more economically be incinerated in the
lime kiln, are processed in a separate
incinerator at this facility to control TRS
(emissions. The cost and energy penalties
tor the separate incinerator are relative-
ly large. The Industry has commented
that it may not be feasible to incinerate
the waste gases from other sources in a
kiln controlled by an ESP, because gases
may explode in the ESP when flameouts
occur in the kiln. Solutions to this poten-
tial problem, such as automatic diverting
of inlet gases away from the kiln when
& flameout occurs, have been considered,
but there is at this time no demonstrated
technology that will ensure that explo-
. sions would not occur.
In arriving at the proposed standard
for particulate matter emissions from
lime kilns, EPA considered the alterna-
tives of a medium pressure drop scrubber
alone, an ESP alone, and both particulate
control systems operated In series. A
separate incinerator to control TRS
emissions from digester systems, mul-
tiple-effect evaporator systems, and con-
tSensate stripper systems was included in
4he two alternative ESP systems. EPA
concluded that the relatively large in-
crements In cost and energy usage asso-
ciated with the ESP alternatives were
aot justified by the additional particulate
control gained beyond that achievable
.With a medium pressure drop scrubber
cJone. Consequently, the proposed par-
Uculate matter standard would require
a medium pressure drop scrubber (ap-
proximately 30 Inches water gauge), or
equivalent.
EPA has determined that an oxygen
concentration in the gas stream meas-
ured after the lime Win control device
to excess of 10 percent represents exces-
sive air inleakage; therefore, the pro-
BHwed standards require (Siat all meas-
urements of particulate matter and TRS
Siat, have an oxygen concentration in
(szoizss of 20 percent be corrected to 10
percent osiygen.
SMELT DISSOLVING TAPTK
Smelt dissolving tanks discharge par-
ticulate matter comprised of -finely
divided smelt particles that are entrained
in the steam emitted from the tank. On
an uncontrolled basis, the quantity of
particulate emissions is small in com-
parison with that from recovery furnaces
and lime kilns. TRS emissions can be
generated in the dissolving tank or in a
scrubbing device that collects particulate
matter, depending primarily on the sul-
flde content of water used to dissolve the
smelt and to perform the scrubbing.
Standards in terms of concentration of
pollutants are not considered appropri-
ate for smelt dissolving tanks because the
effluent stream is primarily ah- and no
correction for oxygen content and dilu-
tion air is possible to ensure effective en--
forcement.
Particulate emissions from smelt dis-
solving tanks are controlled by using wire
mesh demister pads or low energy
scrubbers. The scrubbers remove particu-
late matter much more- effectively,
though the energy requirements and op-
erating costs are higher than for
demisters. The proposed particulate
standard for smelt dissolving tanks
would require the use of low energy
scrubbers, or equivalent systems, and is
supported by four EPA tests on two types
of low energy scrubbers. The proposed
TRS standard for smelt dissolving tanks
would prevent the use of water highly
contaminated with sulndes for dissolving
the smelt and for particulate scrubbing
systems.
OTHER SOURCES
Approximately one-quarter of the total
uncontrolled TRS emissions from a typi-
cal kraft pulp mill are generated by the
digester system, brown stock washer
system, black liquor oxidation system,
multiple-effect evaporator system, and
condensate stripper system. Ineffective
control of these facilities could have a
large impact on localized odor problems.
The effluent streams can be incinerated
in the recovery furnace, the lime kiln, or
a separate incinerator to oxidize most
of the TRS. The quantity of auxiliary
fuel required for incineration is greatly
reduced if incineration is performed in
the recovery furnace and the lime fclin.
If the noncondensable gases from the
brown stock washer system and the black
liquor oxidation system are Incinerated,
for example, in the recovery furnace,
some auxiliary fuel may be required.
However, the noncondensable gases from
the digester system, multiple-effect evap-
orator system, and condensate stripper
system would not require additional fuel
if Incinerated in the lime kiln as part of
the primary ah* feed to the kiln. The pro-
posed standard of 5 ppm TRS, four-hour
average, for each of these five affected
faculties would require incineration in
the recovery furnace and the lime kiln,
or equivalent.
OPACITY STANDARD
An opacity standard is proposed for
recovery furnace systems to ensure
proper operation and maintenance of the
partclulate control device. No opacity
standards are proposed for lime kilns
and smelt dissolving tanks, which fre-
quently generate persistent plumes of
condensed water vapor. The effluent
plume is so greatly dispersed by the time
the vapor plume disappears that the ob-
served-opacity would not be as effective
an indicator of the performance of the
patriculate control system as other
parameters. .Monitoring the operating
parameters of the control system would
be more effective.
STATE IMPLEMENTATION PLANS
It should be noted that standards of
performance for new sources established
under section 111 of the Clean Air Act
reflect emission limits achievable with
the best adequately demonstrated sys-
tems of emission reduction considering
the cost of such systems. State imple-
mentation plans (SIP's) approved or
promulgated under section 110 of the'Act.
on the other hand, must provide for the
attainment and maintenance of national
ambient air quality standards (NAAQS)
designed to protect public health and
welfare. For that purpose SIP's must in
some cases require greater emission re-
ductions than those required by stand-
ards of performance for new sources.
In addition, States are free under sec-
tion 116 of the Act to establish more
stringent emission limits than those es-
tablished under section 111 or those
necessary to attain or maintain the
NAAQS under section 110. Thus, new
and existing sources may in some cases
be subject to limitations more stringent
than EPA's standards of performance
under section 111.
TESTING, MONITORING, AND
RECORDKEEPDJG
Under the proposed standards, per-
.formance tests for TRS emissions ac-
cording to Reference Method 16 pro-
posed herein would be required for all
affected facilities. Performances-tests for
particulate matter emissions from re-
covery furnace systems, lime kilns, and
smelt dissolving tanks would also be
required. Particulate matter emissions
would be measured by Reference Meth-
ods 1 through 5. Method 17 (in-stack
filter) is being proposed as an alterna-
tive method to measure particulate emis-
sions from the recovery furnace. It is
being proposed in Appendix A, Refer-
ence Methods, because the Agency in-
tends to also propose Method 17 as a
reference method to measure particu-
late matter from grain elevators.
The proposed standards include pro-
visions for continuously monitoring the
opacity of visible emissions discharged
from recovery furnaces. To ensure
proper operation and maintenance of
scrubbers Installed on lime kilns and on
smelt dissolving tanks, provisions are in-
cluded for monitoring the pressure drop
across the 'scrubber and the scrubbing
fluid supply pressure to the scrubber.
Where emissions from the
-------
multiple-effect evaporator oycSssn, black
ffiouor oxidation sysJwa. or condensate
stripper are incinerated m a device other
$han a Bme kfln or recovery furnace, it
is proposed that the firebox temperature
of the device be monitored.
A requirement for the continuous
monitoring of TRS emissions from the
recovery furnace and lime kiln is also
proposed. The specifications for continu-
ous TRS monitors are not being proposed
at this time because they have not been
completely developed. However, the de-
velopment of these specifications are
imminent and they are expected to be
promulgated at the time that the kraft
pulp m^i standards of performance are.
promulgated,
A requirement to monitor the oxygen
concentration of the gas stream on a
dry.basis after the control device is be-
ing proposed for the lime kiln and re-
covery -furnace. The montorlng of oxy-
gen concentrations is necessary to cor-
rect the TRC and particulate concen-
trations for the lime kiln and recovery
furnace when the oxygen concentrations
in the respective gas streams are in ex-
cess of 10 percent and 8 percent oxygen.
Records of performance testing meas-
urements, continuous monitoring system
measurements, and monitoring device
measurement would have to be retained
for at least two years following the date
of the measurement* by owners or
operators subject to the provisions of
this subpart. This requirement is in-
cluded under. 8,60.7 (d) of. the regulation.
PUBLIC PARTICIPATION
As prescribed by section 111, this pro-
posal of standards of performance has
been preceded by the Administrator's
determination that kraft pulp mills con-
tribute significantly to air pollution
which causes or contributes to the en-
dangerment of public health or welfare
and by his publication of this determi-
nation in this issue of the FEDERAL
REGISTER. In accordance with section 117
ot the Act, publication of these proposed
standards was preceded by consultation
with appropriate advisory committees,
Independent experts, and Federal de-
partments and agencies.
Interested persons may participate in
this rulemaklng by submitting written
comments (in triplicate) to the Emission
Standards and Engineering Division,
U.S. Environmental Protection Agency,
Research Triangle Park, North Carolina
27711, Attention: Mr. Don R. Goodwin.
The Administrator will welcome com-
ments on all aspects of the proposed.
regulations, including the designation
of kraft pulp mills as a significant con-
tributor to air pollution which causes or
contributes to the endangerment of
public health or welfare, economic and
technological Issues, and the proposed
test methods. All relevant comments re-
ceived on or before November 22, 1976
will be considered. Comments received
will be available for public inspection
and copying-mi the EPA Public Informa-
tion Reference "Unit, Room 2922 <£PA
X&raxy), 401 M Street B.W,
ton. D.C. 20460.
Background information on these pro-
posed standards of performance has
been published In a document entitled
"Standards Support and Environmental
Impact Statement: Standards of Per-
formance for Kraft Pulp Mills, Volume
1." This report presents the factors
considered in the development of the
proposed standards, including alterna-
tive emission control systems, emission
test data, environmental Impact, costs,
and economic considerations. Copies of
the document may be obtained free of
charge by writing to the Public Informa-
tion Center (PM-215), U.S. Environ-
mental Protection Agency, Washington,
DC. 20460 (specify "Standards Support
and Environmental Impact Statement:
Standards of Performance for Kraft
Pulp Mills, Volume 1").
AUTHORITY: This notice of proposed
rulemaking is issued under the authority
of sees. Ill, 114, and 301 (a) of the Clean
Air Act, as amended (42 U.6.C. 1857C-6,
1857c~9,1857g(a)).
Dated: September 16, 1976.
JOHN QCABLKS,
Acting Administrator,
It is proposed to amend Part 60 of
Chapter I of Title 40 of the Code of Fed-
eral Regulations as follows:
1. By adding subpart BB as follows:
Subpart BB—Standards of Performance for
Kraft Pulp MHI*
Sec.
60.280 Applicability and designation of af-
fected facility.
60.281 Definitions.
60.282 Standard for particulate natter.
60.283 Standard for total reduced. sulfur
(TBS).
60.284 Monitoring of emissions and.opera-
tions.
60.285 Test methods and procedures.
AUTHORITY: Sees. Ill, 114, and 801 (a) of
. the Clean Air Act, as amended by aec. 4(a) of
Pub. L. 81-604. 84 8tat. 1678 and by aec. 15
(c) (2) of Pub. L. 91-604. 84 Stat. 1713 (43
UJS.C. 1857C-6,1857C-6. and 1857g(a)).
Subpart BB—Standards of Performance for
Kraft Pulp Mills
§ 60.280 Applicability and designation
of affected facility.
The provisions of this subpart are ap-
plicable to the following affected facili-
ties in kraft pulp mills: digester system,
brown stock washer system, multiple-
effect evaporator system, black liquor
oxidation system, recovery furnace, smelt
dissolving tank, lime kiln, and conden-
sate stripper system. In pulp mills in
which kraft pulping is combined with
neutral sulfide semlchemlcal pulping, the
provisions of this subpart are applicable
when any portion of the material charged
to an affected facility is produced by the
kraft pulping operation.
§ 60.281 Definitions.
As used in this subpart, an terms not
defined herein shall have the same mean-
Ing given them in the Act and m Sub-
part A.
(a) "Kraft pulp mill" mparu: any sta-
tionary source which produces pulp from
wood by cooking (digesting) wood chips
to a water solution of sodium hydroxide
and sodium sulflde (white liquor) at high
temperature and pressure. Regeneration
of the cooking chemic'als through a re-
covery process is also considered part of
the kraft pulp mm.
tt>) "Neutral sulfite semlchemlcal
pulping operation" means any operation
in which pulp is produced from wood by
cooking (digesting) wood chips in a solu-
tion of sodium sulfite and sodium bicar-
bonate, followed by mechanical defl-
brating (grinding).
(c) "Total reduced sulfur (TRS)"
means the sum of the sulfur compounds,
primarily hydrogen sulfide, methyl mer-
captan, dimethyl sulfide, and dimethyl
dlsulfide, that are released during the
kraft pulping operation and measured by
Method 16.
(d) "Digester system" means each con-
tinuous digester or each batch digester
used for the cooking of wood in white
liquor, and associated flash tank(s), blow
tank(s), chip steamer(s), and con-
denser (s).
(e) "Brown stock washer system"
means knotters, vacuum pumps, and fil-
trate tanks used to wash the pulp fol-
lowing the digester system.
(f) -"Multiple-effect evaporator sys-
tem" means the multiple-effect evapora-
tors tend associated condenser(s) and
hotweU(s) used to concentrate the spent
cooking liquid that'is separated from the
pulp (black liquor).
(g) "Black liquor oxidation system"
means the vessels used to oxidize, with
air or oxygen, the black liquor, and as-
sociated storage tank(s).
(h) "Recovery furnace" means the
unit used for burning black liquor to. re-
cover chemicals consisting primarily of
sodium carbonate and sodium sulfide.
The recovery fumance Includes the di-
rect-contact evaporator for a conven-
tional furnace.
(i) "Smelt dissolving tank" means a
vessel used for dissolving the smelt col-
lected from the recovery furnace.
(j) "Lime kiln" means a unit used to
calcine lime mud, which consists pri-
marily of calcium carbonate, Into quick-
Ume, which is calcium oxide.
(k) "Condensate stripper system"
means a column, and associated conden-
sers, used to strip, with ah- or steam.
TRS compounds from condensate
streams from -various processes within a
kraft pulp mm.
§'60.282 Standard for particular mat-
" **!.
(a) On and after the date on which
the performance test required to be con-
ducted by S 60.8 is completed, no owner
or operator subject to the provisions .of
this subpart shall cause to be discharged
to to the atmosphere:
(1) From any recovery furnace any
cases which:
(1) Contain particulate matter ta ex-
cess of 0.10 g/dscxn (0.044 gr/dscf).
(11) Exhibit K percent opacity or
.greater.
KDEKM iHWSTH. VOL -41. MO. ItT—HHOAY, SEHKMMt 14. Wo
V-BBrsS,
-------
(2) 3from any smelt dissolving tank
any gases which contain particulate
matter in excess of 0.15 g/Kg ADP (0.3
lib/ton ADP).
(3) From -any lime kiln any gases
which:
(1) Contain particulate matter in ex-
cess of 0.15 g/dscm (0.067 gr/dscf) when
gaseous fossil fuel Is burned.
(11) Contain particulate matter in ex-
eess of 0.30 g/dscm (0.13 gr/dscf) when
Kquid fossil fuel Is burned.
8 60.283 Standard for total reduced sul-
fur (TRS).
(a) On and after the date on which
t&e performance test required to be con-
ducted by § 60.8 is completed, no owner
or operator subject to the provisions of
Oils subpart shall cause to be discharged
into the atmosphere:
(1) Prom any digester system, brown
stock washer system, multiple-effect
evaporator system, black liquor oxida-
tion system, or condensate stripper sys-
tem any gases which contain TRS in ex-
cess of 5 parts per minion (ppm) by
volume, except as provided under para-
graph (b) of this section.
(2) From any recovery furnace any
gases which contain TRS in excess of 5
ppm by volume.
(3) From any smelt dissolving tank
any gases which contain TRS In excess
Of 0.025 g/Kg ADP (0.0125 Ib/ton ADP).
(4) From any lime kiln any gases
which contain TRS in excess of S ppm
by volume.
(b) The Administrator may exempt any
new, modified, or reconstructed black liq-
'isor oxidation system or brown stock
washer system at an existing kraf t pulp
mill provided the owner or operator dem-
onstrates that incinerating the exhaust
Bases from such system in an existing
recovery furnace is technologically and
economically not feasible. Any exempt
system will become subject to the pro-
visions of this subpart if the recovery
furnace is changed so that the gases can
b* incinerated.
§ 60.284 Monitoring of emissions and
operations.
(a) Any owner or operator subject to
the. provisions of this subpart shall In-
stall, calibrate, maintain, and operate
the following continuous monitoring
systems:
(1) A continuous monitoring system
to monitor and record the opacity of the
gases discharged into the atmosphere
from any recovery furnace. The span of
Eh is system shall be set at 50 percent
opacity.
(2) A continuous monitoring system,
except as provided In paragraph (b.) <1)
of Oils section, to monitor and record
the-concentration of TRS emissions dis-
charged Into the atmosphere from any
ifligester system, brown stock washer sys-
tem, multiple-effect evaporator system,
black liquor oxidation system, recovery
furnace, lime Mln. or condensate strip-
par system. The span shall be set at &
TRS concentration of 30 ppm.
(3) A eontmuoBs monitoring system
feo monitor sad accord 4he percent es£
oxygen by volume in &he gasss «3is-
charged from any recovery furnace or
lime kiln. The continuous monitoring
system shall be located downstream of
the control device (s) for the recovery
furnace or lime fc"". and all measure-
ments shall be made on a dry basis. The
span of this system shall be set at 20 per-
cent oxygen.
(b) Any owner or operator subject to
the provisions of this subpart shall in-
stall, calibrate, maintain, and operate
the following continuous monitoring
devices:
(1) A monitoring device which meas-
ures the combustion temperature at the
point of incineration of effluent gases
which are emitted from any digester sys-
tem, brown stock washer system, multi-
ple-effect evaporator system, black liq-
uor oxidation system, or condensate
stripper system and which are com-
busted in a power boiler or separate in-
cineration unit. The monitoring device
is to be certified by the manufacturer to
be accurate within ±2° C (±3.6° F).
(2) For any lime kiln or smelt dis-
solving .tank using a scrubber emission
control device:
(1) A monitoring device for the con-
tinuous measurement of the pressure
loss of the gas stream through the con-
trol equipment. The monitoring device
is to be certified by the manufacturer
to be accurate to within a gage pressure
of ±250 pascals (ca. ±1 inch water gage
pressure).
(11) A monitoring device for the con-
tinuous measurement of the scrubbing
liquid supply pressure to the control
equipment. The monitoring device is to
be certified by the manufacturer to be
accurate within ±5 percent of design
scrubbing liquid supply pressure. The
pressure sensor or tap is to be located
close to the scrubber liquid discharge
point. The Administrator may be con-
sulted for approval of alternative
locations."
(c) Any owner of'operator subject to
the provisions of this subpart shall cal-
culate and record on a daily basis:
(1) Four-hour average TRS concen-
trations for the six consecutive four-
hour periods of each operating day. Each
four-hour average shall be determined
as the arithmetic mean of the appro-
priate four contiguous one-hour average
total reduced sulfur concentrations pro-
vided by each continuous monitoring
system Installed under paragraph (a) (2)
of this section.
(2) Four-hour average oxygen con-
centrations for the six consecutive four-
hour periods of each operating day for
the recovery furnace and lime Min
These four-hour averages shall corre-
spond to the four-hour average TRS con-
centrations under paragraph (c)(l) of
this section and shall be determined as
an arithmetic mean of the appropriate
four contiguous one-hour average oxy-
gen concentrations provided by each
continuous monitoring system installed
under paragraph (a) (3) of this section.
(d) Any owner or operator of a re-
covery furnace or lime telm subject to
•Qie provisions of this subpart shall:
• <1) Correct oay tour-hour average
TRS concentration corresponding to a
four-hour average oxygen concentration
that is In excess of 8 volume percent
for the recovery furnace. The concentra-
tion shall be corrected to 8 volume per-
cent oxygen.
<2) Correct any four -hour average
TRS concentration corresponding to a
four-hour average oxygen concentration
that is in excess of 10 volume percent for
the lime kiln. The concentration shall be
corrected to 10 volume percent oxygen.
(3) Calculate the corrections required
in paragraphs (d) (1) and (2) of this
section according to the following equa-
tion:
r -r
»--«orr — I'tneao
01 _ V
where:
C«o«i
th« four-hour TRS concentration correclvd for
oxygen.
Coi,.,=tn« four-hour average measured TBS concentra-
tion nncorrected lor oiygen.
X=tbe volumetric oxygen concentration in percent-
age to be corrected to (8 percent for the recovery
furnace and 10 percent for the lime kiln) .
y=tbe measured bur-hour average volumetric
oxygen concentration above 8 volume pwccnt
to the recovery furnance and above 10 volume
percent for tbe lime kiun.
(e) For the purpose of reports re-
quired under § 60.7(c) , any owner or op-
erator subject to the provisions of this
subpart shall report periods of excess
emissions as follows:
(1) For emissions from the recovery
furnace:
(i) All four-hour averages of TRS
concentrations above 5 ppm.
(ii) All six-minute average opacities
that exceed 35 percent, except that 5 per-
cent of the averages may exceed 35 per-
cent opacity. The exception does not ap-
ply to excess emissions due to malfunc-
tions, startups, or shutdowns of the facil-
ity or control device.
(2) For emissions from the lime kiln:
All four-hour average TRS concentra-
tions above 5 ppm, except that 6 percent
of all four -hour averages of TRS con-
centrations are not considered to be ex-
cess emissions if they are less than 10
ppm. The exception does not apply to
excess emissions due to malfunctions,
startups, or shutdowns of the facility or
control device.
(3) For emissions from the digester
system, brown stock washer system, mul-
tiple-effect evaporator system, black liq-
uor oxidation system, or condensate
stripper system where the gases are in-
cinerated in a device other than a re-
covery furnace or lime kiln: All four-
hour average TRS concentrations above
5 ppm, unless the requirements of para-
graph (b) (1) of this section are met.
§ 60.285 Test methods and procedures.
(a) Reference methods in Appendix A
of this part, except as provided under
§ 80.8 (b) , shall be used to determine com-
pliance with | 60.282 (a) as follows:
(1) Method 5 for the concentration
of particulate matter and the associated
moisture content,
(2) Method 1 for sample and velocity
traverses,
(3) When determining compliance
tTlth 1 60.282 (a) (2) , Method 2 for velocity
end volumetric Sow rate,
W34. 41, WO.
24,
V-BB-6
-------
auiis
- (4) Method 3 for gas analysis, and
(S) Method 9 for visible emissions.
(b) For Method 5, the sampling time
for each run shall be at least 60 minutes
and the sampling rate shall be at least
0.85 dscm/hr (0.53 dscf/min) except
that shorter sampling times, when neces-
sitated by process variables or other fac-
tors, may be approved by the Adminis-
trator. Water shall be used as the cleanup
solvent instead of acetone in the sample
recovery procedure outlined in Method 5.
(c) Method 17 (in-stack filtration)
may be used as an alternate method for
Method 5 for determining compliance
with $ 60.2o2(a) (1) (i): Provided, That
a constant value of 0.009 g/dscm (0.004
gr/dscf) is added to the results of Method
17 and the stack temperature is no
greater than 205° C (ca. 400° F). Water
shall be used as the cleanup solvent in-
stead of acetone in the sample recovery
procedure outlined in Method 17.
(d) For the purpose of determining
compliance with § 60.283(a) (1), (2), (3),
and (4), the following reference methods
shall be used:
(1) Method 16 for the concentration
of TRS,
(2) Method 3 for gas analysis, and
(3) When determining compliance
with ! 60.283(a) (3), Method 2 for veloc-
ity and volumetric flow rate.
(e) All concentrations of particulate
matter and TRS from the lime kiln and
recovery furnace that are measured as
required by this section shall be corrected
to 10 volume percent oxygen and 8 vol-
ume percent oxygen, respectively, when
the oxygen concentrations exceed these
values.
APPENDIX A—REFERENCE METHODS
2. Method 16 and Method 17 are added
to Appendix A as follows:
• * * • •
METHOD 16—SEMICONTINTJOTJS DETERMINA-
TION or STJUTJB EMISSIONS FEOM STATION-
ART SOURCES
1. Principle and applicability
1.1 Principle. A gas sample Is extracted
from the emission source and diluted with
clean dry air. An aliquot of the diluted sample
Is then analyzed for gaseous sulfur com-
pounds b; gas chromatographlc (QC) sepa-
ration and flame photometric (FPD) detec-
tion. . Two GC/FPD analytical systems
equipped with suitable columns are used for
resolution of both low and high molecular
weight TBS compounds.
.1.2 Applicability. This method IB applica-
ble for determination of TBS compounds
when specified by an applicable subpart.
2. Range and sensitivity
3.1 Range. The maximum limit of the
FPD for each sulfur compound Is about 1
ppm. This limit Is expanded by dilution of
the sample gas before analysis. Kraft mill
gas samples are normally diluted tenfold
(10:1), resulting In an upper limit of about
10 ppm for each compound.
2.2 Sensitivity. The minimum detectable
concentration of the FPD is less than 50 ppb.
3. Interferences
3.1 Moisture condensation. Moisture con-
densation in the sample delivery system, the
analytical column, or the FPD burner block
can cause losses or Interferences. This poten-
tial is eliminated by heating the sample line,
and by conditioning the sample with dry
dilution air to lower its dew point below the
operating temperature of the OC/FFD ana-
lytical system prior to analysis.
3.2 Carbon monoxide and carbon dioxide.
CO and CO, have a substantial desensitizing
effect on the detector even after 10:1 dilu-
tion. This potential Interference is eliminated
by elutlng CO and CO, with the "air peak"
prior to elution of any sulfur compound.
8.3 Particulate matter. Particulate matter
In gas samples can cause Interference by
eventual clogging of the analytical system.
This interference is eliminated by use of a
filtered probe described in Section 5.1.1.
4. Precision
4.1 Calibration precision. A series of three
consecutive injections of the same calibra-
tion gas, at any dilution, should produce
results which do not vary by more than
±3% from the mean of the three Injections.
4.2 Calibration drift. The calibration
drift determined from the mean of three
Injections made at the beginning and end
of any 8-hour period should not exceed :t3 Tc.
6. Apparatus
5.1.1 Probe. Figure 16-1 illustrates the
probe used in lime kilns and other sources
where significant amounts of particulate
matter are present. The probe is designed
with the deflector shield placed between the
sample and the gas inlet holes and the glass
wool plugs to reduce clogging of the niter
and possible adsorption of sample gas. The
exposed portion of the probe between the
sampling port and the sample line Is heated
with heating tape.
FILTER
luusmoi)
n U/FTD uuvzm
tt:l
MM.E
IKE
1
namvt
•OflACEKOH
nw
„.*£
KMKATIM I
TUK *•
UlllMTUM
1
*
WRACM 1
r<
* ««T
'^~ ° — "
—
J-
lm
-*.
t
-^3
"^^*-
~^WE«T
' OaUEWTAIR
1
1
1
1
1
.
'
1
y
1
1
1
1
I
^.3 -WAV
VAlVt ^
X j
I
1
I
""tStJ-ii
1 t
Cl ~\
i i
U ul
V
25 Kl
CUM
our AIM
MATED
110* HEATED
TOIWE
Figure 16- 2. Sampling and dilution apparatus.
8.1.2 Sample line—He Inch inside diameter
Dekoron FEP Teflon1 tubing, heated to 120*
C. Thla temperature is controlled by a ther-
mostatic heater.
5.1.3 Sample pump—Leakless Teflon
coated diaphragm type or equivalent. The
pump head is heated to 120* C by enclosing
It in the sample dilution box (52.4 below).
6.2 Dilution system—A schematic diagram
of the dynamic dilution system Is given in
Figure 16-2. The dilution system is con-
of trade names or specific prod-
ucts does not constitute an endorsement by
the Environmental Protection Agency.
structed such that all sample contacts are
made of inert materials. The dilution eas-
tern which Is heated to 120* C, must be capa-
ble of a minimum of 10:1 dilution of sample.
Equipment used in the dilution system is
listed below:
5.2.1 Dilution pump—Model A-150
Komhyr Teflon positive displacement type,
non-adjustable 150 cc/mln. ±2.0^, or equiv-
alent, per dilution stage. A 10:1 dilution of
sample Is accomplished by combining 150
cc of sample with 1350 cc of clean dry air as
shown in Figure 16-2.
5.2.2 Valves—Three-way Teflon solenoid
or manual type.
KDEtAL IEOISTEI, YOU 41, NO. 167—RIMY, ISPTEMBEt '14, 1976
V-BB-7
-------
HtOPOSED ItULES
Finvre V-1. Hvbc used for gas containing high oarticulate loadings.
DESCRIPTION or FIGCBE 16-1
1. %" male connector ys" pipe size.
2. A Gelman1 filter—this filter has glass
wool inside.
3. 1" pipe cap which Is drilled out and
welded on the end of the Gelman filter.
4. %" stainless steel tubing with four
%e" boles drilled all the way through both
sides. These holes are Vi" apart. The tubing
Is also packed with glass wool Inside.
6. 14" cap for capping end of tubing.
6/1" stainless steel pipe thread at both
ends, four H" holes or drilled all the way
through both sides. These boles are 1" apart.
7. 1V4" clamps.
8. A V-type deflector.
9. 1" pipe cap.
6.2.3 Tubing—Teflon tubing and fittings
are used throughout from the sample probe
to the OC/FPD to present an Inert surface
for sample gas.
5.2.4 Box—Insulated box, heated and
Ttvfiint.ffjrtA^ at 120* C, of sufficient dimensions
to bouse dilution apparatus.
6.2.6 Flowmeters—Rotameters or d]ulva-
lent to measure flow from 0 to 1SOO ml/mln
±1 % per dilution stage.
6.3 Gas Chromatograph Columns—Two
types of columns are used for separation of
low and high molcular weight sulfur com-
pounds :
5.3.1 Low Molecular Weight Sulfur Com-
pounds Column (GC/FPD-1).
6.3.1.1 Separation Column—11 m by 2.16
mm (36 ft by 0.085 in) inside diameter Teflon
tubing packed with 30/60 mesh Teflon coated
with 5% polyphenyl ether and 0.06% ortho-
phosphoric acid, or equivalent (see Figure
16-3).
6.3.1.2 Stripper or Precolumn—0.6 m by
2.16 mm (2 ft by 0.085 rn) mslde diameter
Teflon tubing packed as in 5.3.1.
6.3.13 Sample Valve—Teflon ten-port gas
sampling valve, equipped with a 10 ml sample
loop, actuated by compressed air (Figure
16-3).
5.3.1.4 Oven—For containing sample
valve, stripper column and separation ool-
umm. The oven should be capable of main-
taining an elevated temperature ranging
from ambient to 100' C, constant within
f LAM PHOTOMETRIC BCUCTM
CINAUXT
FSBEBAI
t. Gai ctvontatoprophfe-ftafnc photomstrfe ans)yzcf%
TOU n, KG. 1S7=-miDflT, SOTMa 24,
V-BB-8
-------
nOPOSEO filiES
6.8.1.5 Temperature Monitor—Thermo-
oouple pyrometer to measure column •ven.
detector, and exhaust temperature ±1" C.
6.3.1.6 Flow System—Gas metering system
to measure sample flow, hydrogen flow, oxy-
gen flow and nitrogen curler gas flow.
63.1.7 Detector—Flame photometric. de-
tector.
5.3.1 £ . Electrometer—Capable of full scale
amplification of linear ranges of 10-* to 10-«
amperes full scale.
6.3.1.9 Power Supply—Capable of deliver-
ing up to 760 volts.
6.8.1.10 Recorder—Compatible with the
output voltage range of the electrometer.
6.8.2 High Molecular Weight Compounds
Column (GC/FPD-n).
TO INSTRUMENTS
AND
DILUTION SYSTEM
£.3.2.1 Separation Column— 3.05 m by 2.16
mm (10 ft by 0.085 In.) Inside diameter Teflon
tubing packed with 30/60 mesh Teflon coated
with 10 percent Triton X-305, or equivalent.
£3.2.3 •Sample Valve— Teflon six-port gas
•Bampl^e valve equipped 'with a 10 ml •am-
ple loop, actuated by compressed air
-------
systems. The concentration In parts per mfl-
lion generated by a -tube containing o spe-
cific permeant can be calculated as follows:
C=K
Pr
ML
Equation 16-1
where:
C= Concentration of permeant produced in ppm.
Pr= Permeation rate of the tube in uglmin.
M= Molecular weight of the permeant
L= Flow rate, 1/min, of air over permeant ©20°C, 760 nun
Hg.
ir=Gas constant at 20°C and 760mm Hg=24.04 Us mole
8.4 Operating Conditions for QC/FPD
Systems.
8.4.1 Low-Molecular. Weight Sulfur Com-
pounds — The operating parameters for the
QC/FPD system used for low molecular
weight compounds are as follows: nitrogen
carrier gas flow rate of 50 cc/mlnute, exhaust
temperature of 110° C, detector temperature
of 105° C, ,oven temperature of 40* C, hy-
drogen flow rate of 80 cc/mlnute. oxygen
flow rate of 20 cc/mlnute, and sample flow
rate between 20 and 80 cc/mlnute. '
8.4.2 High -Molecular Weight Sulfur Com-
pounds — The operating parameters for the
QC/FPD system for high molecular weight
compounds are the same as In 8.4.1. except:
oven temperature of 70' C, and nitrogen
carrier gas flow of 100 cc/mlnute.
8.5 Calibration of QC/FPD Analysis Sys-
tems. Generate a series of three or more
known concentrations spanning the linear
range of the FPD (approximately 0.05 to 1.0
ppm) for each sulfur compound anticipated
to be present In the gas stream analyzed.
Bypassing the dilution system, Inject these
standards Into the GC/TPD analyzers and
monitor the responses. Three injects for each
concentration must yield the precision de-
scribed In Section 4.1. Failure to attain this
precision is an Indication of a problem in
the calibration or analytical system. Any
such problem must be Identified and cor-
rected before proceeding. Peak heights.
rather than Integrated areas, have proven
satisfactory; however, Integrated areas may
be required for alternate columns or instru-
mentation.
8.5. Calibration Curves — Plot the GC/
FPD responses in current (amperes) versus
their causative concentrations in ppm on
log-log coordinate graph paper for each sul-
fur compound calibrated.
8.6 Calibration of Dilution System. Gen-
erate a known concentration of hydrogen
sulfide using the permeation tube system.
Adjust the flow rate of diluent air for the
first dilution stage so that the desired level
of dilution is approximated. Inject the
diluted is approximated. Inject the diluted
calibration gas Into GC/FPD-I and monitor
Its response. Three Injects for each dilution
must yield the precision described in Section
4.1. Failure to attain this precision in this
step Is an Indication of a problem in the
dilution system. Any such problem must be
Identified and corrected before proceeding.
Using the calibration curve for ILS (de-
veloped under 8.4.1) determine the diluted
calibration gas concentration In ppm. Then,
calculate the dilution factor as the ratio of
the calibration gas concentration before
dilution to the diluted calibration gas con-
centration determined under this paragraph.
Repeat this procedure for each stage of dilu-
tion required.
9. Sampling and analysts procedure
9. Sampling. Insert the sampling probe
Into the test port making certain that no
dilution air enters the stack through the
port. Begin sampling .and dilute the sample
approximately 10:1 -using the dilution sys-
tem shown In Figura 16-9. Note that the
prectea dilution factor to that which Is deter-
mined In paragraph 8.5. Condition the en-
tire system with sample for a minimum of 15
minutes prior to commencing analysis.
9.2 Analysis. Allquots of diluted sample
care Injected simultaneously Into both GC/
PPD analyzers for analysis. GC/FPD-I Is used
to measure the low-molecular weight reduced
sulfur compounds. The low molecular weight
compounds Include hydrogen sulfide, sulfur
dioxide, methyl mercaptan, ethyl mercap-
tan, and dimethyl sulfide. GC/FPD-n is used
to resolve the high-molecular weight com-
pounds. The high molecular weight com-
pounds Include propyl mercaptan, butyl mer-
captan, dimethyl disulfide, dlpropyl sulfide,
and dibutyl sulfide.
9.2.1 Analysis of Low-Molecular Weight
Sulfur Compounds—The sample valve is ac-
tuated for one to three minutes In which
time an aliquot of diluted sample Is injected
Into the stripper column and analytical
column. The valve is then de-actuated for
approximately fifteen minutes in which time,
the analytical column continues to be fore-
flushed, the stripper column Is backflushed,
and the sample loop Is refilled. Monitor the
responses. The elutlon time for each com-
pound will be determined during calibra-
tion.
8.2.2 Analysis of High-Molecular Weight
Sulfur Compounds—The procedure Is essen-
tially the same as above except that no
stripper column Is needed.
9.2.3 Sample Run—A sample run is com-
posed of 16 individual analyses (injects) per-
formed over a period of not less than 3 hours
or more than C hours.
9.2.4 Observation for Clogging of Probe—
If reductions In sample concentrations are
observed during.a sample run that cannot be
explained by process conditions, the sam-
pling must be Interrupted to determine if
the sample probe Is clogged with partlculate
matter. After each run, the sample probe
must be Inspected and, if necessary, dis-
mantled and cleaned.
10. Post-Test procedures
10. Recallbration. After each run, or after
a series of runs made within a 24-hour pe-
riod, perform a partial recalibration using the
procedures In Section 8. Only HjS (or other
permeant) need be used to recalibrate the
GC/FPD analysis system (8.4) and the dilu-
tion system (8.6).
10. Determination of Calibration Drift.
Compare the calibration curves obtained
prior to the runs, to the calibration curves
obtained under paragraph 10.1. The calibra-
tion drift must not exceed the limits set
forth in paragraph 4.2. If the drift exceeds
this limit, the Intervening run or runs shall
be considered not valid.
11. Calculations
11.1 Determine the concentrations of each
reduced sulfur compound detected directly
from the calibration curves.
11.2 Calculation of TRS. Total reduced
sulfur will be determined for each analysis
made by summing the concentrations of each
reduced sulfur compound resolved during a
given analysis.
2S) MeSH, 2DMS, x)d
Equation 16-2
where
T.KS
H;S
MeSH
DMS
DMDS
11.3
Total reduced sulfur in ppm, we! basis.
= Hydrogen sulfide, ppm.
Methyl mercaptan, ppm.
Dimethyl sulfide. ppm.
Dimethyl disulfide. ppm.
Other reduced sulfur compounds.
-Dilution factor, dimensionl'-ss.
Average TRS. The average TRS will be determined as follows:
Avg. TRS =
N (1-Bwo)
Equation 16-3
Avg. TRS = Average total reduced sulfur in ppm. dry basts.
I7JS,=Total reduced sulfur in ppm as determined by Equation 16-2.
A"= Number of analyses performed.
ltoo=t Fraction of volume of water vapor in the gas stream as determined by Method 4—Determination of
Moisture in Stack Gases (36 FR 24S87).
12. Bibliography.
12.1 O'Keeffe, A. E. and Ortman, G. C.,
"Primary Standards for Trace Gas Analysis."
Anal. Chem. 38,760 (1966).
12.2 Stevens, R. K., O'Keeffe, A. E., and
Ortman, G. C., "Absolute Calibration of a
Flame Photometric Detector to Volatile Sul-
fur Compounds at Sub-Part-Per-Milllon Lev-
els," Environmental Science and Technology,
3:7 (July, 1969).
12.3 Mulick, J. D., Stevens, R. K., and
Baumgardner, R., "An Analytical System De-
signed to Measure Multiple Malodorous Com-
pounds Related to Kraft Mill Activities,"
presented at the 12th Conference on Methods
In Air Pollution and Industrial Hygiene Stu-
dies, University of Southern California, Los
Angeles, CA, April 6-8, 1971.
12.4 Devonald, R. H., Serenius, R. S., and
Mclntyre, A. D., "Evaluation of the Flame
Photometric Detector for Analysis of Sulfur
Compounds," Pulp and Paper Magazine of
Canada, 73, 3 (March, 1972).
12.5 Grlmley, K. W., Smith, W. S., and
Martin, R. M., "The Use of a Dynamic Dilu-
tion System in the Conditioning of Stack
Gases for Automated Analysis by a Mobile
Sampling Van," presented at the 63rd An-
nual APCA Meeting In St. Louis, Mo., June
14-19, 1970.
12.6 General Reference. Standard Methods
of'Chemical Analysis Volume m A and B
Instrumental Methods. Sixth Edition. Van
Nostrand Reinhold Co.
METHOD 17 — DETERMINATION or
EMISSIONS PBOM STATIONARY SOURCES (IK-
STACK FILTRATION METHOD)
introduction. Participate matter is not an
absolute quantity; rather It Is a variable
which is a function of temperature and pres-
sure. For this reason, paniculate matter
emission regulations and/or associated test
methods must define or take cognizance of
the temperature and pressure at which par-
ticulate matter Is to be measured. If tempera-
ture is not defined, and If the effect of tem-
perature upon the quantity of partlculate In
an effluent gas Is unknown, then the par-
ticulate emission regulation may be variable.
The range of pressure which exist from source
to source is of negligible importance.
In Method 5, 250* F is established as a
nominal reference temperature. Thus, where
Method 5 is specified under an applicable
subpart, paniculate matter Is defined with
respect to temperature. In order to maintain
this Indicated temperature, Method 6 In-
cludes a heated glass sample probe and a
heated filter holder. This equipment is cum-
bersome and requires care In Its operation.
Therefore, where particulate matter concen-
trations (over the normal range of tempera-
ture associated with a specified source cate-
gory) are known to be Independent of tem-
perature, it is desirable to eliminate the glass
FEDEBAl QECISTER, VOL 41, NO. 107—FRIDAY, SEPTEMBER 24, 1976
-------
ond heating -oystem, end sample o&
stack temperature.
This method describes an in-eteck sampling
system and sampling iwoosdures for use
where particulate matter concentrations era
independent of temperature. It may be used
to conduct performance tests under 40 CFB
00.8 within specified conditions, or when ap-
proved by the Administrator.
1. Principle tm& applicability
1.1 Principle. Particulate matter Is with-
drawn lEOklnetically from a gas stream and
collected on o gloss fiber filter maintained at
stack temperature. The particulate matter
mass is determined gravimetrically after re-
moval of uncomblned water.
12 Applicability. This method applies to
the measurement of particulate matter emis-
sions from stationary sources and is used to
IN STACK
FILTER
HOLDER
determine compliance with new source per-
formance standards, when specifically pro-
vided for in .an applicable subpart of the
standards. This method is not applicable
•when stack gases are saturated with water
vapor or ^rhen the projected cross-sectional
ore of the probe extension-filter holder
assembly (when inserted halfway Into the
stack) covers more than 3% of the stack
cross-sectional area (see Section 4.12).
2. Apparatus .
2.1 Sampling train. A schematic of the
sampling train used in this method is shown
to Figure 17-1. Construction details for
many, but' not all, of the train components
are given In AFTD-0581; for changes from the
AFTD-0581 document and for allowable mod-
ifications to Figure 17-1,'consult with the
Administrator.
C9PINGER TRAIN OPTIONAL. BAY BE REPLACED
BY AN EQUIVALENT CONDENSER
THERMOMETER
.CHECK
'AWE
'ACUUM
GAUGE
MAIM.VALVE
DRY GAS METER
Figure 17-1. Paniculate-sampling train, equipped wiih in slack filter.
The operating and maintenance procedures
for many of Che sampling train components
ore described m APTD-0576. Since correct
usage is Important in obtaining valid re-
sults, oil users should read the APTD-0576
document and adopt the operating and maln-
tenace procedures outlined in it, unless oth-
erwise specified herein.
2.1.1 Probe nozzle—Stainless steel (316)
with sharp, tapered leading edge. The angle
of taper shall be £30° and the taper shall be
on the outside to preserve a constant in-
ternal diameter. The probe nozzle shall be of
the button-hook or elbow design, unless oth-
erwise approved by the Administrator. ISie
nozzle shall ba constructed from seamless
stainless steel, tubing. Other configurstions
and construction material may be used sub-
ject to approval from the Administrator.
A range of sizes suitable for Isoklnetle
campling should be available, e.g., 032 cm
(% in.) up to 1.27 cm (Vi in.) (or larger if
higher volume sampling trains are used) in-
side diameter (ID) nozzles in Increments of
0.16 em (Ms in.). Each mozzle shall be cali-
brated according to the procedures outlined
in the calibration section.
• 3.13 Filter Bolder. The in-stack filter
holder shall he constructed of boroslllcate or
quartz glass or stainless steel; if a gasket
is used, it shall be made of slllcone rubber,
teflon, or stainless steel. Other holder and
gasket materials may be used with approval
from the Administrator. The filter holder
shall be designed IS) provide a positive csal
against leakage from the outside or around
«S»o filter.
2.13 Probe Extension—Any suitable rigid
probe extension may be used after the filter
holder. Flexible tubing may. also be used be-
tween the probe extension and the con-
denser.
2.1.4 Pltot tube—Type S, or other-device
approved by the Administrator, attached to-
probe extension to allow constant monitoring-.
of the stack gas velocity. The face openings
of the pilot tube and the probe nozzle shall
be adjacent and parallel to each other, not.
•necessarily in the same plane, during sam-
pling. The free space between the nozzle and
5>ltot tube (sea Figure 17-1) shall be at least
1.8 cm {0.76 In.). The free space, shall be
oet based on o 1.8 cm (0.5 in.) ID nozzle; If
the sampling train is designed for sampling
at higher flow rates than that, described; In
APTD-0581, thus necessitating the use of
larger sized nozzles, the largest sized nozzle -
shall be used to set the free space. In addi-
tion, to iriiTUTniM> aerodynamic interactions
between the pitot tube and filter holder,
there shall be a distance of at least 3 Inches
between the center line of the pitot tube Im-
pact openings and the leading edge of the
alter holder (see Figure 17-1).
The pitot tube must meet the criteria
specified in Method 2, and be calibrated sepa-
rately (I.e., apart from Its assembly configu-
ration) according to the procedures outlined
in that method for the calibration of Isolat-
ed Type S pitot tubes.
2.1.6 Differential pressure gauge—Inclined
manometer capable of measuring velocity
head xrtthln 10% of the minimum measured
volus or ±0.013 pum (0.0008 in.), whichever
is greater. Selow a differential pressure of
1.3 mm (O.OS in.) water guage, mlcromanom-
eters with sensitivities of 0.013 mm (0.0005
In.) should be used. However, mlcromanom-
etere are not easily adaptable to field condi-
tions and are not easy to use with pulsating
flow. Thus, methods or other devices accep-
table to the Administrator may be used when
conditions warrant.
2.1.6 Condenser—Any system that cools
the sample gas stream (e.g., implngers con-
nected in series, as In Method 5) and allows
measurement of both the water condensed
and the moisture leaving the condenser, each
to within 1 ml or 1 g. The moisture leaving
the condenser can be measured either by:
(1) monitoring the temperature and pres-
sure at the exit of the condenser and using
Dalton's law; or (2) passing the sample gas
stream through a silica gel trap with exit
gases kept below 20' C («8° F) and determin-
ing the weight gain.
If means other than silica gel are used'
to determine the amount of moisture leav-
ing the condenser, it is recommended that
silica gel still be used between the condenser
system and pump to prevent moisture con-
densation in the pump and metering devices.
2.1.7 Metering system—Vacuum gauge,
teak-free pump, thermometers capable of
measuring temperature to within 3° C (5.4°
F), dry gas meter with 2% accuracy, and re-
lated equipment, or equivalent, as required
to maintain an Isoklnetic sampling rate and
to determine sample volume. Sampling trains
VACuuvutuizing metering systems designed for
UNE higher flow rates than that: described in
AFTD-0581 or APTD-O576 may be used pro-
Tided that the specifications in section 2 of
this method are met. When the metering
system- Is used in conjunction with a pitot
tube, the system shall enable checks of iso-
kinetic rates.
2.1.8 Barometer—Mercury, aneroid, or
other barometers capable of measuring at-
mospheric pressure to within 2.5 mm Hg (0.1
In. Hg). In many cases, the barometric read-
ing may be obtained from a nearby weather
bureau station, in which -case the station
value (which Is the absolute barometric pres-
sure) shall be requested and an adjustment
for elevation differences between the weather
station and sampling point shall be applied
at a rate of minus 2.5 mm Hg (0.1 in. Hg)
per 30 m (100 ft) elevation Increase or vice
versa'for elevation decrease.
2.1.9; Gas density determination equip-
ment—Temperature and pressure gauges and
gas analyzer as described In Methods 2 and
3.
2.1.10 Temperature and. pressure gauges—
If Dalton's law is used, to monitor tempera-
ture- and. pressure at condenser outlet. The
temperature, gauge/shall, have an accuracy
of 1° C' (2° F). The pressure gauge shall be
capable of measuring, pressure to within 2.5
mm. Hg- (0.1 in. Hg). If silica gel is used in
the condenser system the temperature and
pressure must be measured before the silica.
gel component.
22. Sample recovery:
32.1 Probe nozzle brush—Nylon bristles
with stainless steel wire handle. The brush
shall be properly sized and shaped to brush
out the probe nozzle.
222 Glass wash bottles—Two.
22.3 Glass sample storage containers—
Chemically resistant, boroslllcate glass bot-
tles, for acetone washes, 500-ml or 1,000 ml.
Screw cap closures shall be teflon rubber-
backed liners or of such construction so as
to be leak free and prevent chemical attack
from the acetone. (Narrow mouth glass' bot-
tles have been found to be less prone to
leakage.) Other types of containers must be
approved by the Administrator.
22.4 Petrt dishes—For filter samples;
glass or polyethylene, unless otherwise speci-
fied by the Administrator.
KSESUAIL QE6tS7SJ,
. D3O. TO7— FBJDAY,
24, .1976
-------
PROPOSED RULES
2.2.5 Graduated cylinder - and/or bal-
ance—To measure condensed water to within
1 ml. or 1 g. Graduated cylinders shall have
subdivisions no greater than 2 ml. Most lab-
oratory balances are capable of weighing to
the nearest 0.5 g or less. Any of these balances
are suitable for use here and In section 2.3.4.
2.2.6 Plastic storage containers—Air tight
containers to store silica gel.
2.2.7 Funnel and rubber policeman—To
aid in transfer of silica gel to container; not
necessary If silica gel Is weighed in the field.
2.3 Analysis.
2.3.1 Glass weighing dishes.
2.3.2 Desiccator.
2.3.3 Analytical balance—To measure to
within 0.1 mg.
2.3.4 Balance—To measure to within 0.5
g.
2.3.5 Beakers—250 ml.
2.3.6 Hygrometer—To measure the rela-
tive humidity of the laboratory environment.
2.3.7 Temperature gauge—To measure the
temperature of the laboratory environment.
3. Reagents
3.1 Sampling.
3.1.1 Filters—The In-stack filters shall be
glass mats or thimble fiber filters, without
organic binders, and shall exhibit at least
99.95% efficiency (£0.05% penetration) on
0.3 micron dioctyl phthalate smoke particles.
The filter efficiency tests shall be conducted
In accordance with ASTM standard method
D 2986-71. Test data from the supplier's qual-
ity control program is sufficient for this pur-
pose.
3.1.2 Silica gel—Indicating type, 6-16
mesh. If previously used, dry at 175* C
(350° F) for 2 hours. New silica gel may be
used as received.
3.1.3 Crushed ice.
3.1.4 Stopcock grease—Acetone insoluble,
heat stable sllicone grease. This is not neces-
sary if screw-on connectors with Teflon
sleeves, or similar, are used.
3.2 Sample recovery.
3.2.1 Acetone—Reagent grade, =£0.001 Tc
residue, in glass bottles. Acetone from metal
containers generally has a high residue biank
and should not be used. Sometimes, suppliers
transfer acetone to glass bottles from metal
containers. Thus, acetone blanks shall be run
prior to field use and only acetone with low
blank values (^0.001%) shall be used.
3.3 Analysis.
3.3.1 Acetone—Same as 3.2.1.
3.3.2 Deslccant—Anhydrous calcium sul-
fate, indicating type.
4. Procedure
4.1 Sampling. The sampling shall be con-
ducted by competent personnel experienced
with this test procedure.
4.1.1 Pretest preparation. All the compo-
nents shall t>e maintained and calibrated
according to the procedure described In
APTD-0576, unless otherwise specified herein.
Weigh approximately 200-300 g of silica gel
In air tight containers to the nearest 0.5 g.
Record the total weight, both silica gel and
container, on each container. Larger portions
of silica gel may be used, but care should
be taken during sampling that the gel Is not
entrained and carried out of Its holder. As
an alternative, the silica gel may be weighed
directly In its Implnger or sampling holder
Just prior to train assembly.
Check niters visually against light for
Irregularities and flaws or pinhole leaks. La-
bel filters of proper size on the back side near
the edge using numbering machine Ink. As
an alternative, label the shipping containers
(glass or plastic petrl dishes) and keep the
filters In these containers at all times except
during sampling and weighing.
Desiccate the filters at 20±6.6° C (68*10*
F) and ambient pressure for at least 24 hours
and weigh at 6 or more hour intervals to a
constant weight, i.e., 0.5 mg change from
previous weighing, and record results to the
nearest 0.1 mg. During each weighing the
filter must not be exposed to the laboratory
atmosphere for a period greater than 2 min-
utes and a relative humidity above 50S~C.
4.1.2 Preliminary determinations. Select
the sampling site and the minimum number
of sampling points according to Method 1 or
as specified by the Administrator. Make a
projected area model of the probe extension-
filter holder assembly, with the pltot tube
impact openings positioned along the center-
line of the stack, as shown in Figure 17-2. If
PROBE EXTENSION
FILTER HOLDER
ASSEMBLY
.the estimated cross-section blockage, cal-
culated as shown in Figure 17-2, exceeds 3
percent of the duct cross sectional area, then
either one of the following shall be done: (1)
a suitable out-stack filtration method can be
used instead of In-stack filtration; or (2) a
special in-stack assembly, designed to mini-
mize blockage effects, can be used. For de-
tails concerning the latter approach, consult
with the Administrator.
Determine the stack pressure, temperature.
and the range of velocity heads using Meth-
od 2; determine the moisture content using
Approximation Method 4 or its alternatives
for the purpose of making isoklnetic sam-
pling rate calculations. Estimates may be
used. However, final results will be based on
actual measurements made during the test.
STACK OR DUCT
J
TEMPERATURE
,SENSOR
ESTIMATED
CROSS-SECTION =
BLOCKAGE
X100
Figure 17-2. Projected-area model of cross-section
blockage (approximate average for a sample traverse)
caused by in-stack filter holder-probe extension
assembly.
FEDERAL REGISTER VOL 41, NO. U7—FRIDAY, SEPTEMBER 24, 1976
V-BB-12
-------
PROPOSED HOES
Select a nozzle slzeiased on tlte range of
velocity beads such Oat it to not necessary
to change the nozzle iBlae in order to main-
tain isokinettc sampling rates. During the
ran, do not change the nozzle size. Ensure
that the differential pressure gauge Is capa-
ble of measuring the minimum velocity iread
value to within 10%, or as specified by the
Administrator.
•Select a probe extension length such that
•11 traverse points can be sampled. Consider
sampling from opposite sides for large stacks
to reduce the length of probes.
Select a total sampling time greater than
or equal to the minimum total sampling
tune specified in the test procedures for the
specific Industry such that the sampling time
per point Is not less than 2 mln. (or some
greater time Interval if specified by the Ad-
ministrator) and the sample volume taken.
•will exceed the required minimum total gas
«amp]« volume specified in the test pro-
cedures for the specific industry. The latter
to based on an approximate average sampling
imte. Note also that the minimum total sam-
ple volume Is corrected to standard condl-
It Is recommended that half-integral or
Integral numbers of minutes be sampled at
each point In order to avoid timekeeping er-
In some circumstances, e.g., batch cycles,
tt may be necessary to sample for shorter
tJmea at the traverse points and to obtain
•nailer gas sample volumes. In these cases,
tte Administrator's approval must first be
ebtalned.
4.1.8 Preparation of collection train. Dur-
ing preparation and assembly of the sam-
pling train, keep all openings where con-
tamination can occur covered until Just prior
to assembly or until sampling is about to
begin. ^ -• . . •
If implngers are used to condense stack
gas moisture prepare them as follows: place
TOO ml of water In each of the first two 1m-
plngerr. leave the third tmplnger empty;-
and transfer approximately 200-300 g or more,
tf necessary, of preweighed silica gel from
Its container to the fourth Implnger; alter-
natively, if a balance is available in the field,
the silica gel can be weighed out in a tared
Implnger. and Its weight gain determined In
tbe field. Place the sOlca gel container in a
dean place for later use in the sample re-
covery. If some means other than tmplngere
to used to condense moisture, prepare the
•oodenser (and. if appropriate, silica gel for
condenser outlet) for use.
Using * tweezer or clean disposable surgi-
cal gloves, place a labeled (identified) and
weighed filter In the filter holder. Be sure
that the filter is properly centered and the
gasket properly placed co as not to allow
the sample gas stream to circumvent the
filter? Check filter for tears after assembly Is
completed. Mark the probe extension with
beat resistant tape or by some other method
to denote the proper distance into the stack
or duct for each sampling point.
Unless otherwise specified by the Adminis-
trator, attach a temperature sensor to the
probe extension so that the sensor extends
beyond the leading edge of the probe exten-
sion and does not touch any metal. The sen-
ear should be positioned at least 1.9 cm
(0.75 tn.) from both the pltot tube and probe
nozzle to avoid interference with the gas
" «DW (see Figure 17-1).
Assemble the train as In Figure 17-1, using
.(tt applicable) a very light coat of sllicone
grease on all ground glass Joints and greasing
only the outer portion (see APTD-0576) to
avoid possibility of contamination by the
•nicone grease. Place crushed Ice around the
tmptngen (if applicable).
4.1.4 Leak check procedure—After the
has been assembled, a teak
•check of the filter holder shall be conducted
as follows: Plug the Inlet to the probe noa-
Ete with a material that will be able to with-
stand the stack temperature;' Alternatively,
the proble nozzle can be removed and the In-
let to the filter holder plugged. Insert the
holder into the stack and wait approximately
6 minutes (or longer, if necessary) to allow
the system to come to equilibrium with the
temperature of the stack gas stream. Turn
on the pump and draw a vacuum of at least
380 mm Hg (16 In. Hg). Determine the leak-
age rate, If any. A leakage .rate In excess of
4% of the average sampling rate or 0.00067
m'/mln. (0.02 cfm), whichever is less, is un-
acceptable.
The' following leak check instructions for
the sampling train described in APTD-0576
and AFTD-0681 may be helpful. Start the
pump with by-pass valve fully open and
coarse adjust valve completely closed. Par-
tially open the coarse adjust valve and
slowly close the by-pass valve unto 880 mm
Hg (16 in. Hg) .vacuum is reached. Do not
•reverse direction of by-pass valve. If 880 mm
Hg (15 in. Hg) is exceeded, either leak check
at this higher vacuum or end the leak check
as shown below and start over.
When the leak check IB completed, first
slowly remove the plug from the Inlet to the
probe nozzle and immediately turn off the
vacuum pump. This prevents the water In
the condenser from being forced backward
and keeps silica gel from being entrained
backward.
Leak checks shall be conducted as de-
scribed whenever the train is disengaged, e.g.,
for silica gel or filter changes during the test.
prior to each test run, and at the comple-
tion of each test run. If leaks are found to be
in excess of the acceptable rate, the test will
be considered invalid. To reduce lost time due
to leakage occurrences, it is recommended
that leak checks be conducted between port
changes at the highest vacuum reading
drawn during that sampling traverse.
D»U
• •o..
Muni KUHO._
•CUHMIIO
MTUAHf
CtUTM
MMItm TdK RATURC _
Mraw rmt nrosmt _
(OI«>ISTVM.*_
HUM tnttOXm LEMTM. • Ml _
M221E UiniUCATIM M
MIUCI CAIIMUTEO nine DUUKT[R.O»&O_
If M K«l!.»)ta« Icta) '
mof ran ntrFKsm. c, .
KHUATK o IT ACT cms HCTKM
tuvnsmn
IM»I
ratal
Mm an
». —.
AVtlAfil
suite
IKHUK
•»"«
•»••*•
.
,.-
ttAO
KVUAIU*
«H>
«ei*n
i
vciocm
MAO
!*•»>•
Wfc.M,0
Muna
wunniAL
AOOS
omici
mn»
— Hrf
Ita MjOl
W5MWII
VOUM
->l«>l
US UVU TIVUATUH
Al OH QA9 «m
•Ml
•e I'd
*«•.
OUTUT
•e i««
A-9. .
»».
tunwiuM
t» GAS
HAVING
COMXNSfR CM
UU1 •TWGIM.
•CI«H
Figure 17-3. Parflcutatt fuld dau.
4.1 US Partlculate train operation—During
the sampling run, maintain the tsoklnetic
sampling rate to within 10% (unless other-
wise specified by the Administrator) of true
isoklnetlc.
For each run, record the data required on
the example data sheet shown in Figure 17-8.
Be sure to record the initial dry gas meter
reading. Record the dry gas meter readings
-at the beginning and end of each sampling
time Increment, when changes in flow rates
are made, and when samplylng is halted.
•Take other data point readings at least once
at each sample point during each time incre-
ment and additional readings when signifi-
cant changes (20% variation in velocity bead
readings) necessitate additional adjustments
In flow rate. Level and zero the manometer.
Clean {he portholes prior to the test run
to minimize the chance of sampling the de-
posited material. To begin sampling, remove
the nozzle cap and verify that the pltot tube
and probe extension are properly positioned.
Position the nozzle at the first traverse point
with the tip pointing directly into the gas
stream. Immediately start the pump and ad-
just the flow to isoklnetlc conditions. Nomo-
graphs, which aid In the rapid adjustment
of the laoElnetic sampling rate without ex-
cessive computations, are available lor use
whenever the Type S pltot tube coefficient is
0.85±ti.02. and the stack gas equivalent den-
sity (molecular weight) to 29±4. AFTD-0578
details the procedure for using these nomo-
graphs. If C, and M4 are outside the above
stated ranges, do not use the nomograph un-
less appropriate steps (see Reference 7.7) are
taken to compensate for the deviations.
" When th» stack is under significant nega-
tive pressure (height of Implnger stem), take
care to close the coarse adjust valve before
inserting the probe into the stack. If 'neces-
sary, the pump may be turned on with the
coarse adjust valve closed.
When the probe is in position, block off the
openings around the probe and porthole to
prevent unrepresentative dilution of the gas
stream.
Traverse the stack cross section, as re-
quired by Method 1 or as specified by the
Administrator, being careful not to bump
the probe nozzle into the stack walls when
sampling near the walls or when removing
or Inserting the probe extension through the
portholes, to minimise chance of extracting
deposited material.
FB>EtAi KOUIER, VOL. 41, NO. 117—RIDAY, MPTEMUI M, 1976
-------
fflartog H& *ert raa. tetia tspprcjnioto otepa
' »>if of the filter
holder by rubbing the surfaces with a nylon
bristle brush and rinsing with acetone. Rlnsa
each surface three times or more If needed to
remove visible paniculate. Make a final rinse
of the brush and filter holder. After all ace-
tone washings and paniculate matter ore
collected in the sample container, tighten
the lid on the sample container so that ace-
tone will -not leak out when it is shipped
to the laboratory. Mark the height of the
fiuld level to determine whether or not leak-
age occurred during transport. Label con-
tainer to clearly Identify its contents.
Container No. 3. Note color of indicating
silica gel to determine if tt has bean com-
pletely spent and make a notation of its con-
dition. Transfer the silica eel back to its
original container and eaal. A funnel may
make it easier to pour the silica gel without
spilling, and a rubber policeman may be used
as an aid in removing the silica gel. It is not
necessary to remove the small amount of dust
particles that may adhere to the walls and
are difficult to remove. Since the gain hi
weight is to be used for moisture calcula-
tions, do not use any water or other liquids
to transfer the silica gel. If a balance Is avail-
able in the field, follow the procedure under
-Analysis."
Condenser water. Treat the condenser or
implnger water as follows: make a notation
of any color or film In the liquid catch. Meas-
ure the condensate to within ± 1 ml by using
a graduated cylinder or, if available, to with-
in ±0.6 g by using a balance. Record the
condensate volume or weight. This informa-
tion is required to calculate the moisture
content of the effluent gas. Discard the liquid
after measuring and recording the volume
or weight.
4.3 Analysis. Becord the data required
on the example sheet shown in Figure 17-4.
Handle each sample container as follows:
Container Wo. 1. Leave m chipping con-
tainer or transfer the filter and any tosss
partlculate from the sample container to a
QBSBfEB, VOL 41, CdO. S 87—(FBSfcAV, SEPTSSaQSQ 24, JW6
V-BB-14
-------
Rtoposeo nnis
• tared glass weighing dish and desiccate for
'St hours In 'a desiccator «»v»ifa>tT»ing anhy-
.drous caldufa sulfate. Weight to a constant
Weight and report the results to the nearest
O.I ing. For purposes of this section 43. the
term "constant weight" means * difference
of no more than 0.8 rag or 1 % of total weight
flant.
Date.
lees tare weight, whichever Is greater, be-
tween two consecutive weighings, with no
teas than 6 hours of desiccation time between
weighings and no more than 2 minutes ex-
posure to the laboratory atmosphere, (must
be less than 60% relative humidity)'during
weighing.
Run-No..
Relative Humidity.
Amount liquid lost during transport
Acetone blank volume, ml •
Acetone wash volume, ml
Acetone blank concentration, mg/g (equation 17-4).
Acetone wash blank, mg (equation 17-5)
CONTAINER
NUMBER
1
2 .
TOTAL
WEIGHT OF PARTICULATE COLLECTED.
mg
FINAL WEIGHT
TARE WEIGHT
' Less acetone blank
Weight of particulaie matter
WEIGHT GAIN
.-
-
FINAL
INITIAL
LIQUID COLLECTED
TOTAL VOLUME COLLECTED
VOLUME OF LIQUID
WATER COLLECTED
CONDENSATE
VOLUME,
ml
- •/-
SILICA GEL
WEIGHT,
9
9*1 ml
CONVERT WEIGHT OF WATER TO VOLUME BY DIVIDING TOTAL WEIGHT
INCREASE BY DENSITY OF WATER (1g/ml)
INCREASE, g
1 g/ml
VOLUME WATER, ml
Figure 17-4. .Analytical data.
KDEftAL KGISTH. VOL 41. NO. 1«7—HIOAY, SEFTtMKI 14, If76
V-BB-15
-------
PROPOSED RULES
Container Ho. 2. Note level of liquid In con— the high and low numbers shall not exceed
tainer and confirm on analysis sheet whether 0.1 mm (0.004 In.) .
or not leakage occurred during transport. When nozzles become nicked, dented, or
Measure the liquid to this container either corroded, they shall be reshaped, sharpened,
votumetrlcally to ±1 ml or gravlmetrlcally to Bnd recalibrated before use.
±0.5 g. Transfer the contents to a tared 250 j^^ nozzle ^n ^ permanently and
ml beater, and evaporate to dryness at unlquely ldentlfled.
ambient temperature and pressure. Desiccate ;; ~t t t. K. ™_.- ,«.*,. x^ », n w.
for 24 hours and weigh to a constant weight 6* pltot tube- Tne Pltot tube 8n*u **>
t
-may be conducted In the field. of **>*>•**• Type S pltot tubes.
"Acetone Blank' Container. Measure ace- -B-3 ^7 B*5 naeter and orifice meter. Both
tone In this container either volumetrtcaUy meters shall be calibrated according to the
or gravlmetrlcally. Transfer the acetone to procedure outlined In AFTD-0576. When a
a tared 250 ml beaker and evaporate to dry- diaphragm pump Is used, assure that there
ness at ambient temperature and pressure. ^ no leak.
Desiccate for 24 hours and weigh to a con- 6.4 Temperature gauges. Calibrate dial
Btant weight. Report the results to the near- and liquid filled bulb thermometers and
eet 0.1 mg. thermocouple-potentiometer systems against
K svi»tavitln« mercury-ln-glass thermometers. Ice bath and
o. ooHoriwKm boiling water (corrected for barometric pres-
Malntaln a laboratory log of all calibra- sure) are acceptable reference points. For
toons. other devices, check with the Administrator.
6.1 Probe nozzle. Using a micrometer,
measure the Inside diameter of the nozzle to 6- Calculations
the nearest 0.025 mm (0.001 in.). Make 3 Carry out calculations, retaining at least
separate measurements using different dlam- one extra' decimal figure beyond that of the
eters each -time and obtain, the average of . acquired data. Round off figures after final
the measurements. The difference between calculation. .
4.1 Nomenclature.
A»<=- Cross sectional area of nozzle, m* (ft1).
Bwt= Water vapor in the gas stream, proportion by volume.
C«= Acetone blank residue concentration, xng/g.
c.= Concentration of participate matter in stack gas. dry liasis. cofWl^d lo standard conditions, g/dscm (g
dscf).
7= Percent of isokinetic Sampling.
m»=Total amount of particulate matter collected, mg.
; A/,=Mol«ular weight of water, 18 g/g-mole (18 Ib/lb-mole).
«n.=Mas3 of residue of acetone after evaporation, me.
P*.-— Barometric pressure at the sampling site, mm Hg (in. Dgi.
P.-Absolute stack gas pressure, mm lip (in. Hg).
P,t<=8tandard absolute pressure. 760 mm Be (29.92 in. Hg).
.R= Ideal gas constant, 0.06236 mm Hg-mV°K-g-mole (21.83 In. Hg-ft'^R-lb-mole).
T.= Absolute average dry gas meter temperature (see Figure 17-*). * K (* R).
T.— Absolute average stack gas temperature (see Figure 17-3), • K (° K).
T.u<=> Standard absolute temperature, 293° K (528° R).
V*** Volume of acetone blank, ml.
V«w=" Volume of acetone used in wash, ml.
V.,=Total volume of liquid collected in condenser and silica gel (ae* Figure 17-4), ml.
V««Vo!ume of gas sample as measured by dry gas meter, dcm (dcf).
V.{lM)=Volume of gas sample measured by the dry gas met«r corrected to standard condition*, dacm (dacf).
Vv(aid)a Volume of water vapor in tbe gas sample corrected to standard conditions, scni (acf).
(.-Start gas velocity, calculated by Method 2, Equation 2-7 using data obtained from Method 17, m/ne (ft/see);
IF.= Weight of residue in acetone wash, mg.
AH= Average pressure differential across the orifice meter (we Figure 17-3i. mm HiO On. HiO).
».=> Density of acetone, mg/ml (see label on bottle).
».=Density of water, 1 gym) (0.00220 Hi/ml).
»=Tota) sampling time, min.
13.6 -Sped Be gravity of mercury.
60=sec/min. . . . .
100= Conversion to percent.
8.2 Average dry gas meter temperature and average orifice pressure drop. See data sheet (Figure 17-1).
6J Dry gas volume. Correct the sample volume measured by the dry gas meter to standard condition! (20* C, TOO
mm Hg or 68° F, 29.92 In. Hg) by using Equation 17-1.
r^b.r + Ag/13.6-1
- L - T~. - J
Equation 17-1
Equation 17-t
where:
K =0.8855 °K/mm Hg for metric units
-17.65 "R/in. Hg for English units
(.4 Vohime of water vapor.
F.,.t<1)=V'
vhere "'
K— 0.00134 m'/ml tor metric units
-0.0472 ft'/m) (or Enghsh nnlu
8.5 Moisture content.
B..= V'™ - Equation 17-«
Vm (.td) + V, (.vB
8.6 Acetone blank concentration.
C.=j^=- ' Equation 17-1
r m P»
(.7 AoetotKi wash blank.
W.= C.F«,p. Equation 17-^6
U Total particolat* weight. Determine the total parUcnlate catch from the sum of the weights obtained from
containers 1 and 2 less tbe acetone blank (see Figure 17-4).
6.9 Paniculate concentration.
c.= (0.001 g/mg) (m^Fa(lkn) Equation 17-9
FEOOAL lEOISTIt, VOL 41, NO. U7— fltDAY, SETTEMBH 24, 1976
V-BB-16
-------
MOPOSH) MILES
To
IfnlUply l)y
•Jl Isokioetic variation.
«JL1 Catalations bom raw data.
60 $t>,P,A,
vbere:
K-I.OOJ46 mm Hg-m>/ml-°K for metric units
-0.00267 in. Hg-ft'/mJ-°R lor English unite
s from intermediate values.
8.11.2 Calculations
,
100
T.Vm<
Equation 17-8
where:
K=4.323 for metric units
=0.0044 (or English units
6.12 (Acceptable results. If 90%
110%. the results are acceptable. If the
results are low In comparison to the stand-
ards and I is beyond the acceptable range,
the Administrator may option to accept the
resnlts. Use reference 7.4 to make judgments.
Otherwise, reject the results and repeat the
test-
7. References
7.1 Addendum to Specifications for In-
cinera tor Testing at Federal Facilities. PHS,
NCAPC, Dec. 6, 1967.
- 12 Martin, Robert M., Construction De-
tails of Isokinetlc Source Sampling Equip-
Protection Agency,
7.3 Rom, Jerome J.. Maintenance, Call-
bration, and Operation of Isoklnetic Source
Sampling Equipment. Environmental Protec-
tlon Agency, APTD-0676.
7.4 Smith, W. 8.. R. T. Snlgehara, and W.
p. Todd, A Method of Interpreting Stack
Sampling Data. Paper presented at the 63rd
Annual Meeting of the Air Pollution Control
Association. St. Louis, Mo., June 14-19, 1870.
7.5 Smith. W. 8., et al.. Stack Oas 8am-
pllng Improved and Simplified with New
Equipment APCA paper No. 67-119. 1967.
7-6 Specifications for Incinerator Testing
at Federal Facilities, PHS. NCAPC, 1967.
7.7 Shlgehara, R. T, Adjustments in the
EPA Nomograph for Different Pitot Tube Co-
efflclents and Dry Molecular Weights, Stack
Sampling News 2:4-11. Oct. 1974.
[FRDoc.76-27786 Filed 9-23-76; 8: 45 am]
FEDERAL REGISTER, VOL 41, NO. 187—FRIDAY, SEPTEMBER Z4, 1976
V-BB-17
-------
PROPOSED RULES
ENVIRONMENTAL PROTECTION
AGENCY
[4OCFRPart60]
[FRL 635-4]
KRAFT PULP MILLS
Standards of Performance for New
Stationary Sources; Correction
,In PR Doc. 76-27786 appearing at page
42012 In the FEDERAL REGISTER of Sep-
tember 24, 1976, the following changes
should be made:
1. On page 42012, paragraph 3, line 10
is corrected to read as follows: "0.0125
g/Kg ADP is proposed for smelt."
2. On page 42016, { 60.283(a) (3) Is cor-
rected to read as follows:
§ 60.283 Standard for total reduced sul-
fur (TRS).
3. On page 42020> Equation 16-2 is cor-
rected to read as follows :
TBS=Z(B,S, MeSH, J3MS, SDMDS. z)d
4. On page 42027, Equation 17-7 is corrected to read as follows :
100 r.
(/>»., +Ag/13.'6)l
wet. P. A.
Dated: October 21, 1976.
EDWARD F. TOERK,
Acting Assistant Administrator
tor Air ana Waste Management.
[PR Doc.76-81553 Filed 10-28-78:8:46 am]
(a) • • •
(3) From any smelt dissolving tank
any gases which contain TRS in excess of
0.0125 g/Kg ADP (0.025 Ib/ton ADP).
FEOEftAL .REGISTER. VOL. -41. MO. 210—FRIDAY. OCTOBEt 29. 1976
[40CFRPart60]
|PRL 048-8)
KRAFT PULP MILLS
Standards of Performance for New Station-
ary Sources; Extension of Comment
Period
On September 24, 1976 (41 FR 42012),
the Environmental Protection Agency
(EPA) proposed standards of perform-
ance for the control of emissions from
kraft pulp mills. The notice of proposal
requested public comments on the stand-
ards by November 22,1976. Due to a delay
in the printing and shipping of the
Standards Support and Environmental
Impact Statement, sufficient copies of the
document have not been available to all
interested parties in time to allow their
meaningful review and comment by No-
vember 22. The public comment period is
therefore being extended to allow addi-
tional time for all interested parties to
participate in this rulemaking. EPA has
received a request from the industry to
extend the comment period by 45 days
through January 7,1977. An extension of
this length does not. however, seem
justified because the printing and ship-
ping delay has resulted in only a two-
week delay in processing requests for the
document. EPA has therefore determined
that the comment period will be ex-
tended by three weeks and all comments
postmarked by December 13,1976, will be
considered. Comments should be sub-
mitted (in triplicate) to the Emission
Standards and Engineering Division
(MD-13), U.S. Environmental Protec-
tion Agency, Research Triangle Park,
North Carolina 27711, Attention: Mr.
Don R. Goodwin.
Dated: November 19,1976.
ROGER STRELAW,
Assistant Administrator for
Air and Waste Management.
[FR Doc.76-34661 Piled 11-22-76:8:45 am]
FEDERAL REGISTER,/VOL 41, NO. 227—TUESDAY, NOVEMBER 23, 1976
V-BB-18
-------
ENVIRONMENTAL
PROTECTION
AGENCY
GRAIN ELEVATORS
Standards of Performance for
New Stationary Sources
SUBPART DD
-------
ENVIRONMENTAL PROTECTON
AGENCY
[FRL 661-1]
STANDARDS Of PERFORMANCE FOR
NEW STATIONARY SOURCES
Grain Elevators
Notice is hereby given that under the
authority of section 111 of the Clean Air
Act, as amended, the • Administrator is
proposing standards of perfprmance for
new, modified, and reconstructed grain
elevators.
PROPOSED STANDARDS
- The proposed standards would limit
emissions of particulate matter from
eight affected facilities and the air pollu-
tion control devices on these facilities at
grain elevators. The standards apply to
farm elevators, country elevators, termi-
nal elevators, and commerical rice dryers
which have grain leg capacities greater
than 352 cubic meters per hour (mVh)
(ca. 10,000 bushels hr> and to storage
elevators at wheat flour mills, wet corn
mills, dry corn mills (human consump-
tion) , rice mills, or soybean extraction
plants. The standards are: (1) 0.023
gram per standard cubic meter dry basis
(g/std. m! dry basis.) and zero percent
opacity from control devices on any af-
fected facility except grain dryers; (2)
zero percent opacity from any truck un-
loading station, grain handling operation,
railroad hopper car loading station, or
railroad boxcar loading station; (3) no
visible emissions from any railroad hop-
per car unloading station or railroad box-
car loading station ; '.4.' ten percent opac-
ity from any truck loading station; (5)
ten percent opacity, except that the opac-
ity may not exceed fifteen percent dur-
ing topping -off operations, from any
barge or ship loading station; (6) zero
percent opacity from any grain dryer
(column dryers would be considered in
compliance with the standard provided
the diameters of all column plate per-
forations do not exceed 2.1 millimeters
[mm] [ca. 0.084 inch], and rack dryers
would be considered in compliance pro-
vided all exhaust gases pass through a
50 or finer mesii screen filter) ; (7) op-
eration of a leg which is enclosed from
the top (including the receiving hopper)
to the center line of the bottom pulley,
and ventilation of at least 32.1 actual
cubic meters per cubic meter of grain
handling capacity (ca. 40 ftVbu) to a
particulate control devict on both sides
of the leg and the grain receiving hopper,
at any barge or ship unloading station.
ENVIRONMENTAL AND ECONOMIC IMPACT
The proposed standards would reduce
the uncontrolled particulate matter
emissions from new grain elevators by
more than 9S percent. Estimates for vari-
ous model grain elevators show that the
standards woold reduce particulate mat-
ter emissions to a level that is 67 to 94
percent less than the level required by
typical Stave standards. This reduction
In emissions resii&s in a significant re-
duction of embJEnt concentrations of
particulate matter in the vicinity of grain
elevators. The maximum 24-hour average
concentration at a distance of 0.3 kilom-
eter (km) from the model facilities would
be reduced to a level that is 52 to 76 per-
cent lower than the maximum concen-
tration that results from control to the
level of typical State standards. By 1981,
the proposed standards would reduce the
total amount of particulate matter emis-
sions into the atmosphere by 21,000
megagrams per year (ca. 23,000 tons/yr).
The secondary environmental impacts
of the proposed standards would be
minor. There would be no Impact on
water pollution because only dry type col-
lectors would be used to control particu- <
late emissions. Minimal additional solid
waste handling or disposal problems
would be caused by the standard. Cur-
rently, approximately 68 percent of the
grain dust collected by emission control
devices at elevators is returned to the
grain, 30 percent is sold for use In feed
manufacturing, and 2 percent is disposed
of as solid waste. The additional grain
dust collected by a more efficient control
device would either be sold for feed or
landfilled. The proposed standards would
have minimal adverse impacts on noise
and land-use considerations. A relatively
minor amount of particulate matter, sul-
fur dioxide, and nitrogen oxides would
be discharged into the atmosphere from
power plants supplying the additional
electrical power tfcat would be required to
operate the control device needed to
achieve the proposed standards.
The incremental energy required,
above the typical State standard require-
ments, by the proposed standards to
control all new, modified, or recon-
structed grain elevators constructed by
1981 is equivalent to about 2700 m' per
year (ca. 17,000 barrels per year) of
Number 6 fuel oil. This indicates that the
proposed standards would have a minor
impact on the imbalance between na-
tional energy demand and domestic sup-
ply. The energy requirements of the pro-
posed standards result from the use of
fabric filter control instead of the exist-
ing cyclone control requirements. The
total air pollution control energy that
would be required to meet the proposed
standards represents approximately 23
percent of the total process energy re-
quirements of new grain elevators. This
is an increase of about 5 percent above
the energy presently needed to meet
typical State standard requirements for
new grain elevators.
The proposed. standards would affect
approximately 500 grain elevators in the
next five years. The incremental control
costs of the proposed standards over
typical State control requirements is
estimated to be $26 million in capital cost
in this five-year period and $5.5 million
in annual costs in the fifth year. The
proposed standards would result in a
total added production cost of 0.5 percent
based on a selling price of $68.20 per mj
(ca. $2.40 per bushel) for corn. This cost
includes the cost imposed by the pro-
posed standards on grain production
from the farm to the port terminal ele-
vator. The maximum cost added to the
grain as a result of the proposed stand-
ards at an individual grain elevator
would be less than one cent per bushel.
The effect that the proposed standards
would have on supply arid demand of
grain and grain products and on the
future growth of the grain industry is
considered negligible. In the judgment
of EPA, these costs are considered rea-
sonable for new, modified, and recon-
structed sources.
EPA has determined that this docu-
ment does not contain a major proposal
requiring preparation of an Inflation Im-
pact Statement under Executive Order
11821 and OMB Circular A-107.
SELECTION OF SOURCE CATEGORY AND
AFFECTED FACILITIES
Section 111 of the Clean Air Act di-
rects the Administrator to establish
standards of performance for stationary
sources that may contribute significantly
to air pollution which causes or contrib-
utes to the endangerment of public
health or welfare. Also, under section
109 of the Act, particulate matter has
been designated as a criteria pollutant,
and National Ambient Air Quality
Standards (NAAQS) have been set for
particulate matter.
It is estimated that the grain elevator
industry, which consists of about. 7,900
grain elevators located nationwide, emits
550,000 megagrams per year (ca. 606,000
tons/yr) of particulate matter. In a
study performed for EPA by The Re-
search Corporation of New England,1
significant sources of particulate matter
were identified and ranked in order of
total emissions. Four grain handling
operations were shown to be significant
sources of particulate: processing was
ranked fifth, transfer was ranked
seventh, cleaning and screening was
ranked tenth, and drying was ranked
number thirty-three among all known
sources of particulate emissions. In ad-
dition, the report of the Committee on
Public Works of the United States
Senate * listed grain elevators as a source
for which standards of performance
should be developed.
Growth in the grain elevator and grain
processing industries is expected to be
slow since the per capita consumption
of grain products is remaining constant
or decreasing. The total number of grain
elevators is expected to decrease; how-
ever, the total throughput of grain is
expected to increase slightly. Of the
processing plants, only soybean process-
ors have significant incentive to invest in
new storage capacity. Soybean produc-
tion has increased over twenty-fold in
the United States in less than 34 years.
Approximately 500 new, modified, or
reconstructed grain elevators are ex-
1 Hopper, T. G., and W. A. Man-one. Im-
pact of New Source Performance Standards
on 1985 National Emissions from Stationary
Sources, Volume I. Environmental Protec-
tion Agency, Research Triangle Park, N.C.
Contract Number 68-02-1382, October 24.
1975. pp. 52-59.
'Report of the Committee on Public
Works, U.S. Senate Report No. 91-1196. Sep-
tember 17. 1970. pp. 15-17.
RSDEBAL BEGISTER, VOL 42, NO. 9—THURSDAY, JANUABY 13, 1977
V-DD-2 .
-------
$ected to be constructed by 1981. This
growth rate of about 100 grain elerators
per year is considered to be significant.
EPA has determined that participate
emissions from grain elevators contrib-
ute significantly to air pollution which
causes or contributes to the endanger-
ment of the public health. For this rea-
son, the source category of grain eleva-
tors has been selected for establishing
new source performance standards.
' The proposed standards would apply
to affected facilities that handle wheat,
corn, soybeans, milo, rice, rye, oats, or
barley. These grains were selected to be
subject to the standards because they
ore the primary grains produced in the
United States. There are several other
grains (e.g., millet), but these crops'are
Crown and handled in small quantities.
'therefore, the handling^ of these grains
is not considered a significant source of
particulate matter at this time.
Animal pet food, and cereal manufac-
turers; breweries; and feedlots also han-
dle and process whole grain. These in-
dustries were beyond the scope of the
backgornud industry studies. Conse-
quently, no data are available on these
sources and they are not subject to the
proposed standards. In addition, there
are relatively few plants in these periph-
eral industries.
Consideration was given to classifying
an entire grain elevator, including all its
various functions, as the affected facility.
If this were done, however, modification
-------
This gives a significant capital and oper-
ating cost advan&age to the column
• dryer. EPA believe the majority of new,
modified, or reconstructed dryers will be
column dryers; however, new rack dryers
may be installed In high throughput ele-
vators because maintenance costs appear
to be less for rack dryers in these
applications.
Emissions from grain dryers are dis-
charged from an exhaust area that is
usually very large. Therefore, it is not
technologically or economically feasible
to apply the usual particulate source test
methods designed for measuring stack
emissions to this source. Several attempts
to carry out source tests were made by
EPA and by operators of grain elevators.
The data collected, however, can only be
used as a guide in developing a standard
due to the numerous difficulties encoun-
tered in the measurement technique. The
accuracy and precision of the technique
are not sufficient for determining com-
pliance. EPA has concluded that methods
for measuring mass particlate matter
emissions from grain dryers are not
available at t&is time. The only practical
and feasible method of measuring par-
ticulate matter emissions from grain
dryers is visible emission determinations.
EPA considered several alternate con-
trol systems for grain dryers in develop-
ing the proposed standards. The alterna-
tives considered for column dryers were
no screen filter with a perforation size
range of 1.25 to 2.1 mm (ca. 0.050 to
0.084 inch) and a vacuum-cleaned screen
filter (50 mesh and 100 mesh screen
size). The alternatives considered for
rack dryers were a screen filter (24-30
mesh screen size) and a vacuum-cleaned
screen filter (50 mesh and 100 mesh
screen size). The factors evaluated in
considering these alternatives included
the amount of emissions (visible and
mass), capital costs, annual costs, energy
requirements, operating and mainte-
nance problems, and trends in the indus-
try to use certain types of equipment.
After considering all of these factors,
EPA concluded that the best system of
emission reduction (considering costs) is
a column dryer equipped with column
plate perforation diameters of 2.1 mm
(ca. 0.084 inch) or less and a rack dryer
equipped with a 50 mesh screen filter.
Both of these systems are considered
economically reasonable and compa-
rable in control of particulate matter
emissions.
A zero percent .opacity standard (based
on six-minute averages) is proposed for
all grain dryers. The owner or operator
of any column dryer would be consid-
ered in compliance with the standard
provided the diameters of all column
plate perforations do not exceed 2.1 mm
(ca. 0.084 inch) and the owner or opera-
tor of any rack dryer would be considered
in compliance provided all exhaust gases
pass through a 50 or finer mesh screen
filter. EPA observed five column dryers,
of two different designs, with perfora-
tion plate diameters ranging from 1.25 to
2.1 mm (ca. 0.050 to 0.084 inch). A total
of 126 six-minute opacity averages were
obtained. EPA observed two rack dryers,
one equipped with a 50 mesh vacuum-
cleaned screen filter and the other with
no screen filter. A total of 5 six-minute
opacity averages were obtained at the
dryer equipped with the 50 mesh screen.
Based on the available data, EPA con-
cluded that a standard of zero percent
opacity can be achieved by the best sys-
tem of emission reduction (considering
costs) for grain dryers.
AIR POLLUTION CONTROL DEVICES
EPA separately considered the capture
systems at various grain operations and
the air pollution control devices used to
remove the captured particulate matter
from the gas stream before discharge to
the atmosphere. The proposed standards
would require air pollution control de-
vices on all affected facilities at a grain
elevator, except grain dryers and some
types of dust-tight grain handling op-
erations. EPA measured particulate mat-
ter emissions according to Reference
Method 5, except that the probe was not
heated, from eleven grain processes con-
trolled with fabric filters. EPA did not
measure emissions from cyclones, but
estimates that emissions from grain op-
erations controlled by cyclones average a
factor of 10 times those from fabric filter
control devices. Based on these data,
EPA has determined that the best dem-
onstrated air pollution control device
(considering costs) for grain operations
is a fabric filter.
EPA considered both mass and con-
centration units for the proposed stand-
ards. The basic difference is that a
standard which restricts the mass rate of
emissions would limit the total mass
emitted, whereas a standard with con-
centration units would allow the mass
rate to increase in direct proportion to
the volume of gas exhausted through the
control device. This is an advantage for
concentration units for grain elevators
since a standard with concentration
units does not discourage use of large
volumes of ventilation air. As one might
surmize, adequate capture velocity at the
• collection hood is necessary for complete
capture of the particulate matter gen-
erated by the process. Another advantage
of concentration units is that the emis-
sion test provides all information neces-
sary for enforcement (determination of
mass emissions per volume of gas dis-
charged through the control device).
Mass standards, however, are usually
based on a unit of product or raw ma-
terial to the process. They require an
accurate determination of both mass
emissions and product or raw material
weight. Product and raw material weight
are obtainable only from an operator and
are often difficult parameters to measure.
This is particularly true for grain eleva-
tor operations for the following reasons.
1. The weight of grain handled on
conveyor belts, legs, or cleaners is gen-
erally not measured.
2. If more than one process is con-
trolled by a single collector (i.e., head-
house filter), it may be impossible to
determine the process weight during per-
formance testing. When a standard with
concentration units is applicable to each
process, compliance for any number of
processes can be determined only by
measuring the concentration from the
control device.
The average concentration of particu-
late matter emissions from all the grain
processes tested, excluding one which
had high emissions due to process irreg-
ularities, was 0.007 g/std. m' dry basis.
Most of the individual test results were
below 0.023 g/std. m' dry basis. There-
fore, EPA selected 0.023 g/std. m' dry
basis as the emission limit for the pro-
posed standards. To meet this emission
limit, it would be necessary for grain
operations to install and properly oper-
ate fabric filter control systems rather
than less effective control systems such
as high efficiency cyclones.
A zero percent opacity standard (based
on six-minute averages) is also proposed
for air pollution control devices. EPA ob-
served two fabric filter systems on grain
processes, and all of the individual read-
ings, a total of 56 six-minute averages,
were no visible emissions. EPA believes
that the proposed standard of zero per-
cent opacity would ensure the proper
operation and maintenance of the air
pollution control device.
TRUCK AND RAILCAR UNLOADING STATIONS
The demonstrated methods for con-
trolling particulate matter emissions
from truck and railcar unloading opera-
tions include a collection hood in the re-
ceiving hopper ventilated to an air pol-
lution control device and a protective
enclosure around the facility to reduce
the interfering effect of winds. Generally,
enclosures or sheds are used to protect
the grain and workers from inclement
weather. In some locations, however,
where the weather is consistently dry,
unloading stations do not have sheds. In
developing the proposed standards, EPA
determined that a protective enclosure
is required to prevent wind from inter-
fering with the effectiveness of particu-
late capture by the hopper ventilation
system. Three alternatives were evalu-
ated by EPA concerning protective en-
closures of the unloading station: (1) a
shed with two open ends, (2) a shed with
one open end, and (3) a totally enclosed
shed. A shed with two open ends was
determined to be least effective because
it allows the wind -to blow directly
through and over the receiving hopper.
A sned with one open end and a totally
enclosed shed were found to diminish the
effects of wind upon the ventilation
system.
The totally enclosed shed has been
demonstrated in railcar (hopper and box-
car) unloading operations, where the
two ends of the shed are equipped with
quick-operating doors. However, all of
the truck unloading facilities inspected
by EPA were designed so that the front
end of the truck extends out from the
open end of the shed. Some reduction in
particulate-emissions could be achieved
by totally enclosing the truck unloading
operation; however, EPA knows of no
elevators that use this method. In order
to totally enclose the operation, the shed
would have to be increased in both
FSDEtlAi. QE6ISTSQ, VOL 42, WO.
-------
length and height because the front ends
of the trucks are raised considerably to
aJlow the grain to flow out the rear of the
truck. This would increase the cost of the
abed substantially. In addition, truck un-
loading operations are located at all
small country elevators. Greatly in-
creased costs would be incurred, espe-
cially At'small elevators, from the use
of a completely enclosed shed on truck
unloading operations. Therefore, EPA
has concluded that the best demon-
strated system of emission reduction
(considering costs) for truck unloading
stations is a shed with one open end
and for rallcar unloading stations it is
a totally enclosed shed.
The system for railcar unloading would
Include a receiving hopper equipped with
baffles and ventilated at a rate of approxi-
mately 420 to 710 actual cubic meters per
minute (act mVmin) (ca. 15,000 to 25,000
cfm) depending on the size of the fa-
cility. The system for truck unloading
would Include a receiving hopper
equipped with baffles and ventilated at a
rate of approximately 340 act mVmin
(ca. 12,000 cfm).
An emission standard of zero percent
opacity (six-minute average) is proposed
for truck unloading operations at grain
elevators. A total of 138 six-minute opac-
ity averages were gathered by EPA. The
range for these six-minute averages is
no visible emissions to one percent. A
total of 120 six-minute averages were no
visible emissions and 17 six-minute aver-
ages were zero percent opacity. Based on
the available data, EPA concluded that
a standard of zero percent opacity can
be achieved by the best demonstrated:
system of emission reduction (consider-
ing costs) for truck unloading.
The proposed standard for railcar un-
loading (boxcars and hopper cars) is no
visible emissions. A total of two hours of
visible emission/opacity data were
gathered by EPA on a boxcar unloading
operation. Every data point, taken at 15-
eecond Intervals, indicated no visible
emissions. Data to substantiate the pro-
posed standard were not collected for
hopper car unloading operations. How-
ever, EPA has observed that unloading
of boxcars is a dustier operation than
unloading of hopper cars. Therefore, the
proposed standard applies to both hop-
per cars and boxcars. Based on the avail-
stole data, EPA concluded that a stand-
ard of no visible emissions can be
achieved by the best system of emission
reduction (considering costs) for railcar
unloading.
BARGE AND SHIP UNLOADING STATIONS
An equipment standard is proposed for
barge and ship unloading operations.
EPA observed the levels of visible emis-
sions at a barge unloading station. The
resulting data showed an extremely wide
range of visible emissions, with some six-
minute averages above 65 percent opac-
ity. EPA concluded that an opacity
standard could not be established that
would ensure the installation of the best
system of emission reduction (consider-
ing costs) because of this wide range of
visible emissions.
All of the bucket elevators (legs) ob-
served by EPA at barge and ship unload-
ing stations during the development pf
the proposed standards had various types
of enclosures and were ventilated. A fa-
cility with the leg enclosed from the top
(including the receiving hopper) to the
center line of the bottom pulley appeared
to .perform with the least emissions. This
facility was observed in operation with
and without the ventilation system in
operation. Visible emissions were ob-
served to be significantly lower when the
ventilation system was operating than
when it was not. EPA concluded that this
system represents tiie best demonstrated
system of emission reduction (consider-
ing costs) and proposes an equipment
standard based on the design of this
system.
GRAIN HANDLING OPERATIONS
Particulate matter emissions from
grain handling operations can be mini-
mized through the use of totally enclosed
equipment, by handling the grain at a
slower rate, or by using ventilated hood-
ing systems designed to capture emis-
sions.
Separate data were not obtained on
each item of grain handling equipment
included under grain handling opera-
tions. However, during observation of the
headhouse, the items included under this
affected facility were in operation. An ex-
terior conveyor and a headhouse were
observed and all data recorded were no
visible emissions. A zero percent opacity
standard has been proposed instead of no
visible emissions because zero percent
opacity (six-minute average) allows the
possibility of slight emissions from the
headhouse. EPA has concluded that the
best demonstrated- systems of emission
reduction (considering costs) for grain
handling operations are totally enclosed
equipment or hooding systems ventilated
to air pollution control devices.
TRUCK AND RAILCAR LOADING STATIONS
During the development of the pro-
posed standards, EPA could not locate a
truck loading operation in the grain in-
dustry that used what was considered to
be the best system of emission reduction
that could be applied. Therefore, other
industries such as lime, and flour and
grain processing were studied in an at-
tempt to find well-controlled truck load-
ing operations in these industries. EPA
located and observed a soybean meal
truck loading operation. This operation is
well controlled; however, it does not have
what is considered to be the best system
of emission reduction. Loading soybean
meal into trucks was determined by EPA
to be as dusty an operation as loading
grain into trucks; therefore, a direct
transfer of technology to grain loading
operations is possible. The ten percent
opacity limit is based on data gathered
at .this facility. EPA believes that a bet-
ter control system can be designed than
the one observed; however, this is the
best system that has been demonstrated
for truck loading operations which are
very similar to grain loading operations.
EPA has concluded that the best system
of emission reduction (considering costs)
for truck loading stations is a shed with
one open end, equipped with a loading
spout with a canvas sleeve and a hood-
ing system ventilated at a rate of about
260 to 350 .act mVmin (ca. 10,000 to
12J250 cfm).
Particulate matter emissions which
result from the loading of grain into
hopper cars is controlled in the grain
industry by a hooding system, ventilated
to an air pollution control device, located
at the end of the loading spout. The
loading operation is usually enclosed in
a shed with two open ends. This control
method is the only effective demon-
strated particulate control system used
for loading grain into hopper cars. The
type of hooding and the ventilation rates
are the only variables. Several hopper
car grain loading systems were studied
by EPA by reviewing the manufacturer's
.designs of the systems and through com-
munications with grain elevator opera-
tors and plant engineers. EPA gathered
data from the operation which was de-
termined to be the most effective system.
The individual 15-second opacity data
collected were all zero percent opacity
or no visible emissions. There was no
appreciable wind during this observation
period. Therefore, EPA was proposed a
zero percent opacity limit to allow for
possible slight particulate emissions dur-
ing other than ideal conditions. EPA has
concluded that the best system of emis-
sion reduction (considering costs) for
railroad hopper car loading stations is
a shed with two open ends, and a hood-
ing system located next to the loading
spout which is ventilated at a rate of
about 280 act m'/min (ca. 10,000 cfm).
The grain industry has essentially only
one demonstrated particulate control
system for loading boxcars. The entire
operation is usually enclosed in a shed
with two open ends. EPA took opacity
observations on the best controlled fa-
cility which was found. The data ranged
from three to five percent opacity. The
operation observed, however, was not
considered to employ the best control
technology that could be applied. The
.facility could have been maintained in
better condition and higher ventilation
rates could have been used.
Hopper car loading and boxcar load-
ing operations are similar and best tech-
nology requires a shed with two open
ends and a hooded loading spout venti-
lated to an air pollution control device
on both facilities. The grain Sows
through a loading spout and is deposited
in a receiving vessel (the railcar) at each
facility. Fugitive particulate matter
emissions are also generated in a simi-
lar manner. The stream of grain and
induced air flowing into the railcar dis-
turbs and displaces the air in the railcar.
Also, when the gram impacts against the
receiving vessel, turbulence is created in
the surrounding air. Particulate matter
can be entrained in the turbulent air
currents and flow out of the railcar with
the displaced air. EPA IE proposing a
zero percent opacity standard on boxcar
loading stations based on a transfer of
KBEOAl 02GISTGQ, VOL 42, WO. 9—7WUBSDAY, JANUARY 18, 1977
V-DD-5
-------
technology , from hopper car loading
stations.
EPA has concluded that the best sys-
tem of emission reduction (considering
costs) for railroad boxcar' loading sta-
tions is a shed with two open ends. A
loading spout enclosed by a small build-
ing-like structure which extends to
within 150 mm (ca. 6 inches) of the side
of the boxcar and hinged doors about 200
mm (ca. 8 inches) wide, equipped with
rubber flaps, which seal the sides of the
enclosure to the boxcar are part of this
best control system. This building-like
structure is ventilated at a rate of about
280 act m'/min (ca. 10,000 cfm).
BARGE AND SHIP LOADING STATIONS
EPA considered two systems for con-
trolling particulate matter emissions
from barge and ship loading. The first
consists of a telescoping loading spout
that is adjusted to the elevation of the.
grain surface as loading proceeds.
Ventilation is applied at the end of the
spout and then vented to a fabric filter.
Two variations of this system were ob-
served by EPA. The second system con-
sidered was to cover the hold with canvas
or plastic sheeting except where the load-
ing spout enters. However, no system of
this type was observed in operation. EPA
believes both control systems can achieve
the proposed opacity standards.
Data were gathered from a ship load-
tag operation employing the first control
approach mentioned. These data revealed
that during topping-off operations, re-
corded opacities were greater than dur-
ing general loading operations. EPA,
therefore, has proposed a two-level opac-
ity standard for barge and ship loading
operations. General loading operations
have a ten percent opacity limit and
topping-off operations have a fifteen per-
cent opacity limit.
EPA has no data on loading grain into
barges. However, J2PA has visited barge
loading operations and believes the op-
erations to be similar to ship loading
operations; therefore, the proposed
standards apply to barge loading as well
as to ship loading.
TESTING AND RECORDKEEPING
Under the proposed standards, per-
formance tests for particulate matter
emissions would be required for air pollu-
tion control devices on all affected facili-
ties. Particulate matter would be meas-
ured by Reference Methods 1 through 5
and 17. EPA Reference Method 17 was
proposed in the Standards of Perform-
ance for Kraft Pulp Mills on Septem-
ber 24,1976 (41 FR 42012).
The definition of particulate matter
has been revised to allow measurement
by the reference method specified under
each applicable subpart. This definition
has been revised because Method 17 has
•been proposed as a reference method for
particulate matter.
Records of performance testing meas-
urements would have to be maintained
and retained for at least two years fol-
lowing the date of the measurements by
owners or operators subject to the pro-
posed regulations. This requirement is
included under section 60.7 (d) of the
regulations.
PUBLIC PARTICIPATION
As prescribed by section 111, this pro-
posal of standards of performance has
been preceded by the Administrator's
determination that grain elevators con-
tribute significantly to air pollution
which causes or contributes to the en-
dangerment of public health or welfare
and by his publication of this determina-
tion in this issue of the FEDERAL REGISTER.
In accordance with section 117 of the Act,
publication of these proposed standards
was preceded by consultation with appro-
priate advisory committees, independent
experts, and Federal departments and
agencies.
Interested persons may participate in
this rulemaking by submitting comments
(in triplicate) to the Emission Standards
and Engineering Division, U.S. Environ-
mental Protection Agency, Research Tri-
angle Park, North Carolina 27711, At-
tention: Mr. Don R. Goodwin. The Ad-
ministrator will welcome comments on
all aspects of the proposed regulations,
including the designation of graip eleva-
tors as a significant contributor to air
pollution which causes or contributes to
the endangerment of public health or
welfare, economic and technological is-
sues, and on the proposed test methods.
Comments are invited specifically on
the proposed standard for railcar un-
loading stations and its effect on the un-
loading of unit trains. A number of in-
terested parties have expressed concern
that the uncoupling of railcars, which
would be required when operating a
totally enclosed unloading shed would
have an adverse economic impact. Com-
ments on this issue should contain speci-
fic information and data pertinent to an
evaluation of the magnitude of this im-
pact and its severity.
In addition, EPA is interested in re-
ceiving comments on the selection of the.
best system of emission reduction, con-
sidering costs, for grain dryers. The com-
ments should address the factors EPA
used in evaluating the alternative emis-
sion control systems.
All relevant comments-received on or
before March 14, 1977 will be considered.
Comments received will be available for
public inspection and copying at the Pub-
lic Information Reference Unit, Room
2922 (EPA Library), 401 M Street, S.W.,
Washington, D.C. 20460.
Background information on these pro-
posed standards of performance has been
published in a document "Standards
Support and Environmental Impact
Statement, Volume 1: Proposed Standr
ards of Performance for the Grain Eleva-
tor Industry." This report presents the
factors considered in the development of
the proposed standards, including al-
ternative emission control systems, emis-
sion test data, environmental impact,
costs, and economic considerations.
Copies of this document may be obtained
by writing to the Public Information
Center (PM-215), Environmental Pro-
tection Agency, Washington, D.C. 20460.
AUTHORITY
(Sec. 111. 114. and 301(a) or the Clean Air
Act, as amended by sec. 4 (a) of Pub. L. 91-
6O4, 84 Stat. 1678 and by sec. 15 (c) (2) of
Pub. L. 91-604, 84 Stat. 1713 (42 TJ.S.C. 1857c-
6, 1857C-9, and 1857g(a)).
Dated: January 4,1977.
JOHN QUARLES,
Acting Administrator.
REFERENCES
1. Hopper, T. O., and W. A. Marrone. Im-
pact of New Source Performance Standards
on 1985 National Emissions from Stationary
Sources. Volume I. Environmental Protection
Agency, Research Triangle Park, N.C. Con-
tract Number 68-02-1382, October 24, 1975.
pp. 52-59. ,
2. Report of the Committee on Public
Works, U.S. Senate Report No. 91-1196. Sep-
tember 17, 1970. pp. 15-17.
PART SO—STANDARDS OF PERFORM-
ANCE FOR NEW STATIONARY SOURCES
It is proposed. to amend Part 60 of
Chapter I of Title 40 of the Code of Fed-
eral Regulations as follows:
Subpart A—General Provisions
1. Section 60.2 is amended by revising
paragraph (v). The revised paragraph
reads as follows:
§ 60.2 Definitions.
00000
(v) "Particulate matter" means any
finely divided solid or liquid material,
other than uncombined water, as meas-
ured by the reference methods specified
under each applicable subpart, or an
equivalent or alternative method.
o o o o o
2. Part 60 is amended by adding sub-
part DD as follows:
Subpart DD—Standards of Performance for
Groin Elevators '
Sec.
60.300 Apllcabillty and • designation of
affected faculty.
60.301 Dennltlons.
60.302 Standard for particulate matter.
60.303 Test methods and procedures.
AUTHORITY: Sees. Ill, 114, and 301 (a) of
the Clean Air Act, as amended by sec. 4(a) of
Pub. L. 91-6O4, 84 Stat. 1678 and sec. 15(c)
(2) of Pub. L. 91-604.
Subpart DD—Standards of Performance
, for Grain Elevators
§ 60.300 Applicability and designation
of affected facility.
The provisions of this subpart apply to
the following affected facilities at any
grain elevator except at farm elevators,
country elevators, terminal elevators,
and commercial rice dryers having a
total leg capacity of less than 352 m'/h
(ca. 10,000 bushels/hr) and at animal,
pet food, and cereal manufacturers,
breweries, and feedlots each truck un-
loading station, each railroad hopper car
and boxcar unloading station, equipment
at each barge and ship unloading station,
all grain handling operations, each grain
dryer, each truck loading station, each
railroad hopper car and boxcar loading
station, and each barge and ship loading
station.
QEOISTEQ, VOL. 42, NO. 9—THURSDAY, JANUAOY 13, 1977
V-DD-6
-------
• g 60.301 Befiniokras.
As used in this subpart, all terms not
denned herein shall nave the meaning
given them in the Act and in subpart A
of this part.
(a) "Grain" includes corn, wheat, milo,
rice, rye, oats, barley and soybeans.
(b) "Grain elevator" means any
operation at which grain is unloaded,
handled, loaded, dried or stored at any
farm elevator, country elevator, terminal
elevator, commercial rice dryer or stor-
age elevator at wheat Sour mills, wet
corn mills, dry corn mills (human con-
sumption) , rice mills, or soybean oil ex-
traction plants.
(c) "Control device" means the air
pollution control equipment used to re-
move particulate matter generated by an
affected facility at a grain elevator.
(d) "Capture system" means the
equipment including sheds, hoods, ducts,
fans, dampers, etc. used to capture or
transport particulate matter generated
by an affected facility at a grain eleva-
tor to the control device.
(e) "Fugitive emission" means the
particulate matter generated by an
affected facility at a grain elevator which
Is not collected by a capture system and
Is discharged to the atmosphere.
(f) "Grain unloading station" means
that portion of a grain elevator where
the grain is transferred from a truck,
rallcar, barge or ship to a receiving
hopper.
(g) "Grain loading station" means
that portion of a grain elevator where
the grain is transferred from the ele-
vator to a truck, railcar, barge or ship.
(h) "Grain handling operations" in-
clude bucket elevators or legs (excluding
legs used to unload barges or ships), scale
hoppers and surge bins (garners), turn
heads, scalpers, cleaners, tripers, and the
headhouse and other such structures.
(i) "Grain'dryer" includes any equip-
ment used to reduce the moisture con-
tent of grain.
(j). "Column dryer" means a grain
dryer in which the grain flows from the
. top to the bottom in one or more con-
tinuous packed columns between two
perforated metal sheets.
(fc) "Rack dryer" means a grain dryer
in which the grain flows from the top
to the bottom in a cascading flow:around
rows of baffles (racks).
•(1) "Topping off" means that portion
of a barge or ship loading operation
which occurs within 1.2 meters (ca. 4
feet) of the top of the hold.
§60.302 Standard for particulate mat-
ter.
(a) On and after the sixtieth day of
operating at the maximum production
rate at which the affected facility will be
operated, but no later than 180 days after
initial start-up, no owner or operator
subject to the provisions of this subpart
shall cause to be discharged into the at-
mosphere from any grain dryer any gases
which exhibit greater than zero percent
opacity (column dryers would be con-
sidered in compliance with the standard
provided the diameters of all column
plate perforations do not exceed 2.1 mm
(ca. 0.084 inch), and rack dryers would
be considered in compliance provided all
exhaust gases pass through a 50 or finer
mesh screen filter).
(b) On and after the^date on which
the performance test required to be con-
ducted by " 60.8 is completed, no owner
or operator subject to the provisions of
this subpart shall cause to be discharged
into the atmosphere from any affected
facility except a grain dryer any gases
which:
(1) Exit from a control device and
contain particulate matter in excess of
0.023 g/std. m" dry basis (ca. 0.01 gr/
dscf).
(2) Exist from a control device and
exhibit greater than zero percent opacity.
(c) On and after the sixtieth day of
operating at the maximum production
rate at which the affected facility will be
operated, but no later than 180 days after
initial start-up, no owner or operator
subject to the provisions of this subpart
shall cause to be discharged into the
atmosphere any fugitive emission from:
(1) Any truck unloading station, rail-
road hopper car loading station, railroad
boxcar loading station, or grain handling
operation which exhibits greater than
zero percent opacity.
02) Any railroad hopper car unload-
ing station or railroad boxcar unloading
station which is visible without the aid
of instruments.
(3) Any truck loading station which
exhibits greater than ten percent opacity.
(4) Any barge or ship loading sta-
tion which exhibits greater than ten per-
ment ' opacity, except that the opacity
may not exceed fifteen percent during
topping-off operations.
(d) The owner or operator of any barge
or ship unloading station shall operate as
follows :
(1) The leg shall be enclosed from the
top (including the receiving hopper) to
the center line of the bottom pulley and
ventilation to a control device shall be
maintained on both sides of the leg and
the grain receiving hopper.
(2) The total rate of air ventilated
shall be at least 32.1 actual cubic meters
per cubic meter of grain handling capac-
ity (ca. 40 ftVbu) .
(3) Rather than meet the require-
ments of subparagraphs (1) and (2) , the
owner or operator may use other meth-
ods of control if demonstrated to the Ad-
ministrator's satisfaction that there
would be less than or equivalent amounts
of particulate matter emissions by using
the alternative methods.
§ 60.303 Test methods and procedures.
(a) Reference methods in Appendix A
of this part, except as provided under
|60.8(b), shall be used to determine
compliance with the standards prescribed
under § 60.302 as follows:
(1) Method 5 or Method 17 for concen-
tration of particulate matter and asso-
ciated moisture content;
(2) Method 1 for sample and velocity
traverses ;
(3) Method 2 for velocity and volumet-
ric flow rate;
(4) Method 3 for gas analysis; and
(5) Method 9 for visible emissions.
(b) For Method 5, the sampling probe
and filter holder shall be operated with-
out heaters. The sampling time for each
run, using Method 5 or Method 17, shall
be at least 60 minutes. The minimum
sample volume shall be 1.7 std. m* dry
basis (ca. 60 dscf).
[PR Doc.77-1097 Filed l-12-77;8:45 am]
FSB5QAI QE6ISTEO, VOL 42, WO. 9—THUBSDAY, JAWUAQY JS.
[40CFRPart60]
[FRL 697-4]
GRAIN ELEVATORS
Standards of Performance for New Station-
ary Sources; Extension of Comment Period
On January 13, 1977, the Environ-
mental Protection Agency (EPA) pub-
lished a notice of proposed rulemaking
under section 111 of the Clean Air Act,
as amended (42 PR 2842). The proposed
regulation would establish standards of
performance for new, modified or recon-
structed grain elevators. The comment
period for this proposed regulation ends
March 14. 1977.
EPA has been requested by the Gov-
ernor of Kansas to extend the comment
period 60 days in order to allow the Kan-
sas Secretary of Health and Environ-
ment, representatives of the State's grain
industry, and other interested parties
additional time to compile, assemble and
submft, comments. Since it appears that
a number of persons would like addi-
tional time to submit comments, the
comment period is being extended 60
days for all parties who may wish to
participate in this rulemaking. All com-
ments postmarked by May 14, 1977, will
be considered and should be submitted
(in triplicate) to the Emission Standards
and Engineering Division (MD-13), U.S.
Environ mental Protection Agency, Re-
search Triangle Park, North Carolina
27711, Attention: Mr. Don R. Goodwin.
Dated: March 7, 1977.
EDWARD F. TUEHK,
Acting Assistant Administrator
for Air and Waste Management.
[FB Doc.77-7359 Filed 3-10-77;8:45 am]
FEDERAL REGISTER, VOL. 42, NO. 46—FRIDAY, MARCH 11, 1977
V-DD-7
-------
TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing)
1 REJW-76-009a
4. TITLE AND SUBTITLE
Environmental Protection Agency
Standards of Performance for New Stationary Source
(Supplement No. 1)
7. AUTHOR(S)
9. PERFORMING ORGANIZATION NAME AND ADDRESS
PEDCo-Environmental Specialists, Inc.
Suite 13, Atkinson Square
Cincinnati, Ohio 45246
12. SPONSORING AGENCY NAME AND ADDRESS
Environmental Protection Agency
Division of Stationary Source Enforcement
Washington, D.C. 20460
15. SUPPLEMENTARY NOTES
3. RECIPIENT'S ACCESSION>NO.
5. REPORT DATE
March 15, 1977
s 6. PERFORMING ORGANIZATION CODE
8. PERFORMING ORGANIZATION REPORT NO.
10. PROGRAM ELEMENT NO.
11. CONTRACT/GRANT NO.
68-02-1375 Task No. 31
13. TY?E OF,REPORT AND PERIOD COVERED
Final
14. SPONSORING AGENCY CODE
16. ABSTRACT
In this supplement for Standards of Performance for New Stationary Sources,
revisions which have appeared in the Federal Register since the publication
of the handbook on August 1, 1976 are presented. The full text of all revisions
and other notices pertaining to the standards are included as well as the full
text of all proposed amendments as of March 15, 1977.
17. KEY WORDS AND DOCUMENT ANALYSIS
a. DESCRIPTORS b.lDENTIFI
Federal Emission Standards New So
EPA Test Methods Standa
Enforcement ' Enforc
18. DISTRIBUTION STATEMENT 19. SECURI
Undo
Release Unlimited 20. SECURI
ERS/OPEN ENDED TERMS C. COSATI Field/Group
urce Performance 13 B
rds
ement 14 D
TY CLASS (This Report)' 21. NO. OF PAGES
ssified 293
TY CLASS (This page) 22. PRICE
EPA Form 2220-1 (9-73)
-------
INSTRUCTIONS
1. REPORT NUMBER
Insert the EPA report number as it appears on the cover of the publication.
2. LEAVE BLANK
3. RECIPIENTS ACCESSION NUMBER
Reserved for use by each report recipient.
4. TITLE AND SUBTITLE
Title should indicate clearly and briefly the subject coverage of the report, and be displayed prominently. Set subtitle, if used, in smaller
type or otherwise subordinate it to main title. When a report is prepared in more than one volume, repeat the primary title, add volume
number and include subtitle for the specific title.
5. REPORT DATE
Each report shall carry a date indicating at least month and year. Indicate the basis on which it was selected (e.g., date of issue, date of
approve/, date of preparation, etc.).
6. PERFORMING ORGANIZATION CODE
Leave blank.
7. AUTHOR(S)
Give name(s) in conventional order (John R. Doe, J. Robert Doe, etc.). List author's affiliation if it differs from the performing organi-
zation.
8. PERFORMING ORGANIZATION REPORT NUMBER
Insert if performing organization wishes to assign this number.
9. PERFORMING ORGANIZATION NAME AND ADDRESS
Give name, street, city, state, and ZIP code. List no more than two levels of an organizational hirearchy.
10. PROGRAM ELEMENT NUMBER
Use the program element number under which the report was prepared. Subordinate numbers may be included in parentheses.
11. CONTRACT/GRANT NUMBER
Insert contract or grant number under which report was prepared.
12. SPONSORING AGENCY NAME AND ADDRESS
Include ZIP code.
13. TYPE OF REPORT AND PERIOD COVERED
Indicate interim final, etc., and if applicable, dates covered.
14. SPONSORING AGENCY CODE
Leave blank.
15. SUPPLEMENTARY NOTES
Enter information not included elsewhere but useful, such as: Prepared in cooperation with, Translation of, Presented at conference of,
To be published in, Supersedes, Supplements, etc.
16. ABSTRACT
Include a brief (200 words or less) factual summary of the most significant information contained in the report. If the report contains a
significant bibliography or literature survey, mention it here.
17. KEY WORDS AND DOCUMENT ANALYSIS
(a) DESCRIPTORS - Select from the Thesaurus of Engineering and Scientific Terms the proper authorized terms that identify the major
concept of the research and are sufficiently specific and precise to be used as index entries for cataloging.
(b) IDENTIFIERS AND OPEN-ENDED TERMS - Use identifiers for project names, code names, equipment designators, etc. Use open-
ended terms written in descriptor form for those subjects for which no descriptor exists.
(c) COSATI FIELD GROUP - Field and group assignments are to be taken from the 1965 COS ATI Subject Category List, Since the ma-
jority of documents are multidisciplinary in nature, the Primary Field/Group assignment(s) will be specific discipline, area of human
endeavor, or type of physical object. The application(s) will be cross-referenced with secondary Field/Group assignments that will follow
the primary posting(s).
18. DISTRIBUTION STATEMENT
Denote releasability to the public or limitation for reasons other than security for example "Release Unlimited." Cite any availability to
the public, with address and price. /
19. &20. SECURITY CLASSIFICATION
DO NOT submit classified reports to the National Technical Information service.
21. NUMBER OF PAGES
Insert the total number of pages, including this one and unnumbered pages, but exclude distribution list, if any.
22. PRICE
Insert the price set by the National Technical Information Service or the Government Printing Office, if known.
EPA Form 2220-1 (9-73) (Reverse)
-------