LASSEN COUNTY AIR POLLUTION CONTROL DISTRICT
APPENDIX C - AIR TOXIC CONTROL MEASURES
BENZENE EMISSIONS FROM RETAIL SERVICE STATIONS
To comply with Health & Safety Code Section 93101, by reducing airborne benzene emissions from retail service
- ARB - Certified Vapor Recovery System
A vapor recovery system which has been certified by the state board pursuant to Section 41954.
Exposure to view by digging.
Any organic liquid (including petroleum distillates and methanol) having a Reid vapor pressure of four pounds or
greater and used as a motor vehicle fuel or any fuel which is commonly or commercially known or sold as gasoline.
- Hold-Open Latch
A device, approved by the ARB, that allows hands-off refueling of a vehicle.
- Motor Vehicle
The same meaning as defined in Section 415 of the Vehicle Code.
- Owner or Operator
An owner or operator of a retail service station.
- Phase I Vapor Recovery System
A gasoline vapor recovery system which recovers vapors during the transfer of gasoline from delivery tanks into
stationary storage tanks.
- Phase II Vapor Recovery System
A gasoline vapor recovery system which recovers vapors during the fueling of motor vehicles form stationary storage
- Retail Service Station
Any new or existing motor vehicle fueling service station subject to payment of California sales tax gasoline sales.
- Existing Retail Service Station
Any retail service station operating, constructed, or under construction as of January 15, 1989.
- New Retail Service Station
Any retail service station which is not constructed or under construction as of January 15, 1989.
- Tank Replacement
Replacement of one or more gasoline stationary storage tanks at an existing retail service station or excavation
of 50 percent or more of an existing retail service station's total underground liquid piping from the stationary
storage tanks to the gasoline dispensers.
The volume of gasoline dispensed at a retail service station.
- Leak Free
A liquid leak of no more than three drops per minute.
- Topping Off
To attempt to dispense gasoline to a motor vehicle fueled tank after a vapor recovery dispensing nozzle has shut
off automatically. The filling of those vehicle tanks which, because of the nature and configuration of the fill
pipe, cause premature shut off of the dispensing nozzle, and which are filled only after the seal between the fill
pipe and the nozzle is broken, shall not be considered topping off.
- Vapor Tight
A leak of less than 100 percent of the lower explosive limit on a combustible gas detector measured at a distance
of 2.5 cm (1 inch) from the source or no visible evidence of air entertainment in the sight classes of liquid delivery
C. Compliance Schedule
- After January 15, 1989, the owner or operator of any new retail service station subject to this Rule shall
comply with its provisions at the time gasoline is first sold from the station.
- The owner or operator of any existing retail service station without ARB-certified Phase I and II vapor recovery
systems shall notify the control officer in advance of an intended tank replacement and shall secure all necessary
permits and other approvals for the installation of Phase I and II vapor recovery systems. The owner or operator
of an existing retail service station shall comply with the provisions of this rule upon completion of the tank
- The owner or operator of an existing retail service station who has not earlier complied in accordance with
C.2., shall, by April 1, 1990, secure all permits and other approvals necessary for installation of the equipment
required by this Rule. The owner or operator shall comply with the provisions of this rule by January 1, 1991.
- Excluding those existing retail service stations subject to this Rule as a result of tank replacement, the
owner or operator of a previously exempt stationary source tank or retail service station where the operation or
annual throughput has changed such that the exemption form either the Phase I or II requirements or both is no
longer applicable, shall comply with this Rule's provisions within 12 months of loss or said exemption.
- Any owner or operator of a retail service station not exempt by D.2.a, D.2.b., or D.2.c., and which does not
have a vapor recovery system, shall by July 1, 1990:
- install and maintain in good working order hold-open latches on all gasoline dispensers.
- conspicuously post in the gasoline dispensing area a reasonable facsimile of the following:
(Letters shall be a minimum of 1-inch high)
Gasoline vapors can be hazardous to your health. Ask attendant how hold-open latches can reduce
D. Phase I Vapor Recovery System Requirements
- No owner or operator shall transfer, permit the transfer, or provide equipment for the transfer of gasoline,
and no other person shall transfer gasoline from a gasoline delivery tank at a retail service station unless an
ARB-certified Phase I vapor recovery system is installed on the stationary storage tank and used during the transfer.
- The provisions of D.1. shall not apply to:
- a stationary storage tank with a capacity of less than 260 gallons.
- a stationary storage tank used the majority of the time for the fueling of implements of husbandry.
- A stationary storage tank used exclusively to fuel motor vehicles with a fuel capacity of five gallons or less.
- an existing retail service station with an annual throughput of 480, 000 or fewer gallons during the 1988 calendar
year. If during any calendar year thereafter the gasoline throughput from such tanks at the existing retail service
station exceeds 480,000 gallons, this exemption shall cease to apply commencing with the first day of the following
- a transfer to a stationary storage tank an existing retail service station which receives gasoline exclusively
from delivery tanks that are not required to be equipped with vapor recovery systems.
- Notwithstanding D.2.d., at the time of tank replacement at any existing retail service station, ARB-certified
Phase I vapor recovery systems shall be installed and used thereafter on all the station facilities, except those
which are exempt by D.2.a., D.2.b., D.2.c., or D.2.e.
E. Phase II Vapor Recovery System Requirements
- No owner or operator shall transfer, permit the transfer or provide equipment for the transfer of gasoline
from a stationary storage tank at a retail service station into a motor vehicle fuel tank unless an ARB-certified
Phase II vapor recovery system is installed and used during the transfer.
- The provision of E.1. shall not apply to:
- a stationary storage tank which is exempt from Phase I requirements under D.2.a., D.2.b, or D.2.c.
- an existing retail service station which is exempt from Phase I requirements under D.2.d.
- Notwithstanding E.2.b., at the time of tank replacement at an existing retail service station, ARB-certified
Phase II vapor recovery systems shall be installed and used thereafter on all of the station facilities, except
those which are exempt by E.2.a.
F. Correction of Defects
No owner or operator shall use or permit the use of any Phase II system or any component thereof containing
a defect identified in Title 17, California Code of Regulations, Section 94006 until it has been repaired, replaced,
or adjusted, as necessary to remove the defect, and, if required under Health and Safety Code Section 41960.2,
district personnel have reinspected the system or have authorized its use pending reinspection. Nothing in this
subdivision shall excuse compliance with subdivision E.1.
Sources subject to this rule shall pay an annual fee to the District based on the number of gasoline dispensers
in accordance with the following schedule:
|Number of Dispensers
|Less than 5
|5 or greater but less than 10
|10 or greater but less than 20
|20 or greater
G. Operating and Maintenance Requirements
The operator of each retail facility using a Phase II vapor recovery system shall conspicuously post operating
instructions for the system in the gasoline dispensing area. The instructions shall clearly describe how to fuel
vehicles correctly with vapor recovery nozzles used at the station, and shall include a warning that topping off
may result in spillage or recirculation of gasoline and is prohibited. Additionally, the instructions shall include
a prominent display of the Lassen County Air Pollution Control District's or the ARB's toll-free telephone number
All Phase I and Phase II gasoline vapor recovery equipment shall be installed as required by ARB certification
and operated as recommended by the manufacturer and shall be maintained to be leak free vapor tight, and in good
AERATION OF CONTAMINATED SOIL
To limit the emission of organic compounds from contaminated soil and to describe an acceptable soil aeration
- Active Storage Pile
A pile of contaminated soil to which soil is currently being added or from which soil is currently being removed.
Activity must have occurred or be anticipated to occur within one hour to be current.
Exposure of excavated contaminated soil to the air.
- Aeration Depth
The smaller of the following: the actual average depth of contaminated soil; or 6 inches multiplied by the daily
frequency with which soil is turned. The exposed surface area includes the pile of excavated soil unless the pile
- Aeration Volume
The volume of soil being aerated shall be calculated as follows: the exposed surface area in square feet shall
be multiplied by the aeration depth.
- Contaminated Soil
Soil which has an organic content exceeding 50 ppm (weight).
- Organic Compound
Any compound of carbon, excluding methane, carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or
carbonates and ammonium carbonate.
- Organic Content
The concentration of organic compounds measured in the composite sample collected and analyzed using the procedures
specified by this Rule.
C. Excavation of Contaminated Soil
The person responsible for aeration of any contaminated soil shall provide the District with the following
information no less than 24 hours prior to spreading or heating of any contaminated soil. The District shall be
notified within 24 hours if any of the parameters change.
- Estimated maximum quantity of soil to be aerated.
- Estimated maximum quantity of soil to be aerated per day.
- Estimated maximum degree of contamination, or total organic content of soil.
- Chemical composition of contaminating organic compounds (i.e., gasoline, methylene, chloride, etc.).
- A description of the basis from which these estimates are derived (soil analysis test reports, etc.).
During Excavation and Aeration daily records shall be kept of:
- Total quantity of soil aerated per day.
- Organic content of soil aerated daily.
D. Uncontrolled Aeration
A person shall not aerate contaminated soil at a rate in excess of that specified in Table 1 for the degree
of organic content. The limitations in Table 1 apply to the entire facility, and indicate the volume of contaminated
soil that may be added, on any one day, to soil that is already aerating.
E. Controlled Aeration
Allowable Rate of Uncontrolled Aeration
|RATE OF UNCONTROLLED AERATION
50 - 100
100 - 500
500 - 1000
1000 - 2000
2000 - 3000
3000 - 4000
4000 - 5000
Soil may be aerated at rates exceeding the limitations of Table I provided emissions of organic compounds to
the atmosphere are reduced by at least 90% by weight.
F. Storage Piles
Contaminated soil which is not being aerated shall be covered except when soil is being added or removed. Any
uncovered contaminated soil will be considered to be aerated. The soil may be covered with a layer of uncontaminated
soil no less than six inches deep; or it may be covered with a tarp or other covering, provided no head space where
vapors may accumulate is formed.
- Storage Pile
Calculations of aeration volume shall not include storage piles that are covered nor shall they include active
- Excavated Hole
The exposed surface of an excavated hole shall not be included in calculations of aerated volume.
Contaminated soil exposed for the sole purpose of sampling shall not be considered to be aerated. Removal of soil
for sampling shall not qualify a pile as "active".
- Non-volatile Hydrocarbons
The requirements of this Rule shall not apply if the soil is contaminated only by a known organic chemical or petroleum
liquid, and that chemical or liquid has an initial boiling point of 302F or higher, provided that the soil is not
H. Soil Sampling
One composite sample shall be collected and analyzed for every 50 cubic yards of excavated contaminated soil
to be aerated. At least one composite sample shall be collected from each inactive, uncovered storage pile within
24 hours of excavation. Samples are not required if the soil is uncontaminated.
- Each composite sample shall consist of four seperate soil samples taken using the procedures described below
unless other methods are approved by the control officer.
- Samples shall be taken from at least three inches below the surface of the pile using a driven-tube type sampler,
capped and sealed with inert materials, and extruded in the lab in order to reduce the loss of volatile materials;
or by using a clean brass tube (at least three inches long) driven into the soil with a suitable instrument. The
ends of the brass tube shall then be covered with aluminum foil, then plastic end caps, and finally wrapped with
a suitable tape. The samples shall then be immediately placed on ice, or dry ice, for transport to a laboratory.
I. Measurement of Organic Content
Organic content of soil shall be determined by the Regional Water Quality Control Board's Revised Analytical
Methods, Attachment 2, 11/8/85, or other methods approved by the control officer.
HEXAVALENT CHROMIUM EMISSIONS FROM CHROME PLATING
AND CHROMIC ACID ANODIZING OPERATIONS A. PURPOSE
To comply with the California Code of Regulations, Section 93102, by controlling airborne emissions of hexavalent
The integral of electrical curent applied to a plating tank (amperes) over a period of time (hours).
- Anti-mist Additive
A chemical which reduces the emission rate from the tank when added to and maintained in the plating tank.
- Chrome Plating
Either hard or decorative chrome plating.
- Chromic Acid
An aqueous solution of chromium trioxide (CrO3), or commercial solution containing chromic acid, dichromic acid
(H2CrO7), or trichromic acid (H2Cr3010).
- Chromic Acid Anodizing
The electrolytic process by which a metal surface is converted to an oxide surface coating in a solution containing
- Control Equipment
Any device which reduces emissions from the emissions collection system.
- Decorative Chrome Plating
The process by which chromium is electrodeposited from a solution containing compounds of chromium onto an object
resulting in a chrome layer 1 micron (0.04 mil.) thick or less.
- Emission Factor
The mass of chromium emitted during a test conducted in the emissions collection system in accordance with ARB
Test Method 425, divided by the ampere-hours consumed by the tanks in the tested emissions collection system, expressed
as the mass of chromium emitted per ampere hour of electrical current consumed.
- Emissions Collection System
A device or apparatus used to gather chromium emissions from the surface of a chrome plating or chromic acid anodizing
tank or tanks.
A business or businesses engaged in chrome plating or chromic acid anodizing which are owned or operated by the
same person or persons and are located on the same parcel or on contiguous parcels.
- Facilitywide Emissions from Hard Chrome Plating Or Chromic Acid Anodizing
The total emissions from all hard chrome plating or chromic acid anodizing at the facility over a calander year.
Emissions shall be calculated as the sum of emissions from the emissions collection system at the facility. The
emissions from an emissions collection system shall be calculated by multiplying the emission factor for that emissions
collection system by the sum of ampere-hours consumed during that year for all of the tanks served by the emissions
- Hard Chrome Plating
The process by which chromium is electrodeposited from a solution containing compounds of chromium onto an object
resulting in a chromium layer thicker than 1 micron (0.04 mil.).
- Plating Tank
Any container used to hold a chromium or chromic acid solution for the purposes of chrome plating or chromic acid
- Uncontrolled Chromium Emissions From The Hard Chrome Plating Or Chromic Acid Anodizing Facility
The chromium emissions from the emissions collection systems at the facility calculated as if no control equipment
is in use. For the purpose of determining compliance with this rule, the uncontrolled chromium emissions shall
be calculated using an emission factor based on tests conducted in accordance with ARB Test Method 425 or 14 mg/ampere-hour,
whichever is less.
C. REQUIREMENTS OF DECORATIVE CHROME PLATING FACILITIES
- No person shall operate a decorative chrome plating tank unless an anti-mist additive is continuously maintained
in the plating tank, or control equipment is installed and used, in a manner which has been demonstrated to and
approved by the Control Officer as reducing chromium emissions by 95% or more relative to chromium emissions when
an anti-mist additive is not maintained, or control equipment is not installed and used.
D. REQUIREMENTS FOR HARD CHROME PLATING AND CHROMIC ACID ANODIZING FACILITIES.
- The owners or operators of all hard chrome plating and chromic acid anodizing facilities shall maintain a continuous
record of current integrated over time (ampere-hours) for all plating tanks for each collection system used in
the hard chrome plating or chromic acid anodizing operations and shall, upon request, submit information to the
- No person shall operate a plating tank for hard chrome plating or chromic acid anodizing unless the tank has
an emissions collection system whose design and whose operational parameters are approved by the APCO.
- No person shall operate a hard chrome plating or chromic anodizing tank unless:
- the chromium emissions from the emissions collection system serving the plating tank have been reduced by 95%
or more of the uncontrolled chromium emissions or
- the chromium emissions from the emissions collection system serving the plating tank have been reduced to less
than 0.15 milligrams (mg) of chromium per ampere-hour of electrical charge applied to the plating tank.
- No person shall operate a hard chrome plating or chromic acid anodizing tank at a facility if facilitywide
chromium emissions from hard chrome plating or chromic acid anodizing are greater than 2 pounds per year, but less
than 10 pounds per year, unless:
- the chromium emissions form the emissions collection systems serving the plating tanks have been reduced by
at least 99% of the uncontrolled chromium emissions from the hard chrome plating or chromic acid anodizing facility
- the chromium emissions from the emissions collection systems are reduced to less than 0.03 mg. of chromium
per ampere-hour electrical charge applied to the tanks.
- No person shall operate a hard chrome plating or chromic acid anodizing tank at a facility if facilitywide
chromium emissions from hard chrome plating or chromic acid anodizing are 10 pounds per year or greater, unless:
- the chromium emissions from the emissions collection systems serving the plating tanks have been reduced by
at least 99.8% of the uncontrolled chromium emissions from the hard chrome plating or chromic acid anodizing facility
- the chromium emissions from the emissions collection systems are reduced to less than 0.006 mg. of chromium
per ampere-hour electrical charge applied to the tanks.
E. COMPLIANCE SCHEDULE
The owner or operator of any facility subject to this rule shall comply with its provisions at the time the facility
HEXAVALENT CHROMIUM EMISSIONS FROM COOLING TOWERS
To comply with the California Code of Regulations, Section 93103, by controlling airborne emissions of Hexavalent
Hexavalent chromium. A substance identified as a toxic air contaminant by the California Air Resources Board.
- Cooling Tower
A device which evaporates circulating water to remove heat from a process, building or refrigerator and transfers
the heat to the ambient air.
A business or businesses which employs the use of a cooling tower that is owned or operated by the same person
or persons and is located on the same parcel or on contiguous parcels.
- No person shall operate at any facility a cooling tower in which Hexavalent Chromium has been added to the
circulating water of the cooling tower.
- The concentration of Hexavalent Chromium in the circulating water of the cooling tower shall not exceed:
- 0.15 milligrams per liter (mg/L) in any non-wooden cooling tower;
- 8.0 mg/L in any wooden cooling tower; and 0.15 mg/L, effective one year after the adoption of this regulation,
in any wooden cooling tower.
- Every person who operates a cooling tower shall determine by American Public Health Association Test Method
312B the concentration of Hexavalent Chromium in the circulating water every six months in non-wooden cooling towers
and every month in wooden cooling towers. Records of Hexavalent Chromium concentration testing shall be kept on
file by the cooling tower operator for two years and shall be made available to the APCD upon request.
- Testing may be discontinued if two consecutive required tests show that Hexavalent Chromium concentrations
are less than 0.15 mg/L. The Air Pollution Control District (APCD) may require testing of the circulating water
at any time to confirm that the circulating water does not contain Hexavalent Chromium concentrations in excess
of 0.15 mg/L.
- Every person who operates a cooling tower shall submit to the APCD within 90 days after the adoption of this
rule a compliance plan stating the following:
- The name, address and phone number of the cooling tower operator;
- The cooling tower site specific location;
- Whether or not any Hexavalent Chromium is used in the circulating water of the cooling tower.
- The date on which the use of Hexavalent Chromium in the circulating water of the cooling tower will be discontinued.
D. COMPLIANCE SCHEDULE
- Every person subject to this rule shall discontinue the use of Hexavalent Chromium in the circulating water
of cooling towers no later that 180 days after the adoption date of this rule.
- Except as provided in C.2.b., every person subject to this rule shall meet the 0.15 mg/L Hexavalent Chromium
concentration limit in the circulating water of cooling towers no later than 180 days after the adoption date of
DIOXIN EMISSIONS FROM MEDICAL WASTE INCINERATORS
To comply with the California Code of Regulations, Section 93104, by controlling airborne emissions of Dioxins
from Medical Waste Incinerators.
State of California Air Resources Board.
- ARB Test Method 2
The test method specified in Title 17, California Code of Regulations, Section 94102.
- ARB Test Method 428
The test method specified in Title 17, California Code of Regulations, Section 94139.
- Control Equipment
Any device which reduces emissions from medical waste incinerators.
Dibenzo-p-dioxins and dibenzofurans chlorinated in the 2,3,7 and 8 positions and containing 4,5,6, or 7 chlorine
atoms and expressed as 2,3,7,8,tetrachlorinated dibenzopara-dioxin equivalents using current California Department
of Health Services toxic equivalency factors.
Every building, structure, appurtenance, installation, or improvement located on land which is under the same or
common ownership or operation, and is on one or more contiguous or adjacent properties.
- Medical Facilities
Medical and dental offices, clinics and hospitals, skilled nursing facilities, research facilities, research laboratories,
clinical laboratories, all unlicensed and licensed medical facilities, clinics and hospitals, surgery centers,
diagnostic laboratories, and other providers of health care.
- Medical Waste Incinerators
All of the furnaces or other closed fire chambers that are located at a facility and used to dispose of waste generated
at medical facilities by burning.
C. REQUIREMENTS FOR MEDICAL WASTE INCINERATORS
The following requirements shall apply only to medical waste incinerators that incinerate more than 25 tons
of waste per year.
- No person shall operate a medical waste incinerator unless the dioxins emissions have been reduced to 10.00
nanograms or less per kilogram of waste burned.
- No person shall operate a medical waste incinerator unless the control equipment is installed and used in a
manner which has been demonstrated to and approved by the district air pollution control officer to meet the following
- The flue gas temperature at the outlet of the control equipment shall not exceed 300 degrees ahrenheit, unless
it has been demonstrated to, and approved in writing by, both the ARB and the district air pollution control officer
that lower emissions are achieved at a higher outlet temperature; and
- For a single chamber incinerator, the combustion chamber shall be maintained at no less than 1800 degrees (+
or - 200 degrees) Fahrenheit. For a multiple chamber incinerator, the primary combustion chamber shall be maintained
at no less than 1400 degrees Fahrenheit, and the secondary chamber shall be maintained at no less than 1800 degrees
(+ 200 degrees) Fahrenheit. The furnace design shall provide for a residence time for combustion gas of at least
one second. Residence time shall be calculated using the following equation:
V = the volume, as expressed in cubic feet, from the point in the incinerator where the maximum
temperature has been reached until the point where the temperature has dropped to 1600 F.
Qc = the combustion gas flow through V expressed in actual cubic feet per second, which is measured according to
ARB Method 2, after adjusting the measured flow rate to the maximum furnace temperature (Tmax) by using Tmax instead
of Tstd in the Method 2 calculation for Qc, as follows:
The volumetric flow rate measured at the sampling points must be adjusted to chamber pressures.
Alternative methods may be used if conditions for determining the combustion gas flow rate by Method 2 are unacceptable.
The determination shall be within the guidelines of Method 2 and at the discretion of the Air Pollution Control
Officer. One such alternative is to calculate the flow rate from combustion stoichiometry according to following
|Lb aux. fuel
|Lb aux. fuel
Eawf = The excess air ratio (Lbs excess air
--- Lbs theoretical air) for the waste feed expressed as a percentage
EAaf = The excess air ratio (Lbs excess air --- Lbs theoretical
air) for the auxiliary fuel expressed as a percentage
Tc = The maximum temperature, in degrees Fahrenheit, that
has been reached in the incinerator
In order to estimate Qstoiwf and EAwf, a representative sample of the waste must be characterized by chemical analysis.
If chemical analysis is not performed, the applicant must provide evidence to substantiate claims of representativeness
of any proposed empirical method to estimate Qstoiwf and EAwf, since determining these parameters empirically can
result in less accurate values.
- No person shall operate a medical waste incinerator unless the bottom ash, fly ash and scrubber residuals are
handled and stored in a manner that prevents entrainment into ambient air.
- The owner or operator of a medical waste incinerator shall maintain the following:
- A continuous data recording system which provides for each day of operation continuous recording of the primary
and secondary combustion chamber temperatures; carbon monoxide emissions; the key operating parameters of the air
pollution control equipment, as specified by the district air pollution control officer; the hourly waste charging
rates; and the opacity of stack emissions or other indicator of particulate matter which is approved by the district
air pollution control officer;
- Maintenance records for the incinerator, control equipment, and monitoring equipment; and calibration records
for the monitoring equipment; and
- Equipment for determining and recording the weight of waste charge to the incinerator.
- For purposes of demonstrating compliance with subsection (c)(1) of this rule the owner or operator of a medical
waste incinerator shall conduct a minimum of two annual source tests every year for the dioxins stack emissions
using the high resolution mass spectrometry option of ARB Test Method 428. For purposes of determining compliance
with subsection (c)(l) of this rule, the source testing shall be conducted at the stack. The information regarding
the composition (moisture content, and amount of the total waste that is infectious, pathological, hazardous, or
radioactive) and feed rate of the fuel charged during the source test shall be provided with the test results.
The district air pollution control officer can require additional necessary information regarding the composition
of the waste. Source testing shall be conducted at the maximum waste firing capacity (+ 10 percent) allowed by
the air district permit. A copy of all source test results conducted for purposes of demonstrating compliance with
this rule shall be provided to the ARB at the same time that it is provided to the local air pollution control
- Any violation, malfunction, or upset condition on the incinerator, the air pollution control equipment, or
the continuous data recording system shall be reported to the district within 1 hour of occurrence or by 9:OO a.m.
the next business day if the malfunction occurs outside normal business hours and the district does not maintain
a radio room or an answering machine.
- No person shall operate a medical waste incinerator unless each individual who operates or maintains the incinerator
obtains either a certificate of training in medical waste incineration issued by the American Society of Mechanical
Engineers within nine months of the commencement of the training program, or equivalent training as determined
by the Air Pollution Control Officer. Copies of the training certificates for the operators and maintenance engineers
shall be submitted to the districts and the original certificates shall be available for inspection at the facility
with the permit to operate.
D. REQUIREMENTS FOR MEDICAL INCINERATORS
The following requirements shall apply to incinerators that incinerate 25 tons or less or waste per year:
- No person shall operate a medical waste incinerator that incinerates 25 tons or less of waste per year unless
the requirements specified in subsections (c)(3), (c)(4)(C), and (c)(7) are met.
- The owner or operator of a medical waste incinerator that incinerates more than 10 but less than 25 tons of
waste per year shall conduct one initial source test at the incinerator stack as specified in subsection (c)(5).
E. COMPLIANCE SCHEDULE
- No later than 90 days after district adoption of regulations enacting this control measure, the owner or operator
of a medical waste incinerator that incinerates more than 25 tons of waste per year shall submit to the district
air pollution control officer an application for an authority to construct the equipment necessary to meet the
requirements of sections (c)(l) or (c)(2), and no later than 15 months after district adoption of regulations enacting
this control measure, the owner or operator of a medical waste incinerator shall be in compliance with this regulation.
- The owner or operator of a medical waste incinerator who intends to permanently shut down operation of the
incinerator shall notify the district of the shutdown date within iO days after district adoption of regulations
enacting this control measure. The shutdown date shall be no later than six months after district adoption of regulations
enacting this control measure.
- The owner or operator of a medical waste incinerator that incinerates 25 tons or less of waste per year who
intends to remain in operation shall notify the district within 9O days after district adoption of regulations
enacting this control measure. The owner or operator of a medical waste incinerator shall be in compliance with
this regulation no later than 15 months after district adoption of regulations enacting this control measure.
- This control measure shall not apply to those incinerators which are exclusively crematoria of human or animal
ETHYLENE OXIDE EMISSIONS
FROM STERILIZERS AND AERATORS
A. Purpose. To comply with the California Code of Regulations Section 93108, by controlling airborne
emissions of Ethylene Oxide.
B. Definitions. For the purposes of this section, the following definitions shall apply:
- "Acute care facility" means any facility currently licensed by the California Department of Health
Services as a general acute care hospital (as defined in Title 22, CCR, Section 70005), or any military hospital.
- "Aeration" is the process during which residual ethylene oxide dissipates, whether under forced air
flow, natural or mechanically assisted convection, or other means, from previously sterilized materials after the
sterilizer cycle is complete.
- "Aeration-only facility" means a facility which performs aeration on materials which have been sterilized
with ethylene oxide at another facility.
- "Aerator" means any equipment or space in which materials previously sterilized with ethylene oxide
are placed or remain for the purpose of aeration. An aerator is not any equipment or space in which materials that
have previously undergone ethylene oxide sterilization and aeration can be handled, stored, and transported in
the same manner as similar materials that have not been sterilized with ethylene oxide.
- "Aerator exhaust stream" means all ethylene oxide contaminated air which is emitted from an aerator.
- "Back-draft valve exhaust stream" is the air stream which results from collection of ethylene oxide-contaminated
air which may be removed from the sterilizer through a back-draft value or rear chamber exhaust system during unloading
of the sterilized materials.
- "Control device" means an article, machine, equipment, or contrivance which reduces the amount of
ethylene oxide between its inlet and outlet and which is sized, installed, operated, and maintained according to
good engineering practices, as determined by the district.
- "Control efficiency" is the ethylene oxide (EtO) mass or concentration reduction efficiency of a
control device, as measured with ARB Test Method 431 (Title 17, CCR, Section 94143) according to the source testing
requirements herein, and expressed as a percentage calculated across the control device as follows:
||100 = % Control Efficiency
- "Date of compliance" means the time from district adoption of regulations enacting this control measure
until a facility must be in compliance with specific requirements of this rule.
- "District" means the local air pollution control district or air quality management district.
- "Ethylene oxide (EtO)" is the substance identified as a toxic air contaminant by the Air Resources
Board in 17 CCR, Section 93000.
- "Facility" means any entity or entities which: own or operate a sterilizer or aerator, are owned
or operated by the same person or persons, and are located on the same parcel or contiguous parcels.
- "Facility-wide pounds of ethylene oxide used per year" is the total pounds of ethylene oxide used
in all of the sterilizers at the facility during a one-year period.
- "Leak-free" refers to that state which exists when the concentration of sterilant gas measured 1
cm. away from any portion of the exhaust system of a sterilizer or aerator, during conditions of maximum sterilant
gas mass flow, in less than:
- 30 ppm for sterilant gas composed of 12% ethylene oxide 88% chlorofluorocarbon-12 by weight and
- 10 ppm for other compositions of sterilant gas, as determined by ARB Test Method 21 (Title 17, CCR, Section
94124) using a portable flame ionization detector of a nondispersive infrared analyzer, calibrated with methane,
or a acceptable alternative method or analytical instrument approved by the district. A chlorofluorocarbon-12 specific
audible detector using a metal oxide semi-conductor sensor shall be considered an acceptable alternative for exhaust
systems carrying a sterilant gas mixture of ethylene oxide and chlorofluorocarbon12.
- "Local medical emergency" means an unexpected occurrence in the area served by the acute care facility
resulting in a sudden increase in the amounts of medical treatments which require a significant increase in the
operation of sterilizer or aerator.
- "Sterilant gas" means ethylene oxide or any combination of ethylene oxide and (an) other gas(es)
used in a sterilizer.
- "Sterilizer" means any equipment in which ethylene oxide is used as a biocide to destroy bacteria,
viruses, fungi, and other unwanted organisms on materials. Equipment in which ethylene oxide is used to fumigate
foodstuffs is considered a sterilizer.
- "Sterilizer cycle" means the process which begins when ethylene oxide is introduced into the sterilizer,
includes the initial purge or evacuation after sterilization and subsequent air washes, and ends after evacuation
of the tidal air wash.
- "Sterilizer door hood exhaust stream" is the air stream which results from collection of fugitive
ethylene oxide emissions, by means of an existing hood over the sterilizer door, during the time that the sterilizer
door is open offer the sterilizer cycle has been completed.
- "Sterilizer exhaust stream" is all ethylene oxide contaminated air which is intentionally removed
from the sterilizer during the sterilizer cycle.
- "Sterilizer exhaust vacuum pump" means a device use to evacuate the sterilant gas during the sterilizer
cycle, including any associated heat exchanger. A sterilizer exhaust vacuum pump is not a device used solely to
evacuate a sterilizer prior to the introduction of ethylene oxide.
C. Applicability. Any person who owns or operates a sterilizer or an aerator must comply with this regulation.
D. Notification. Any person subject to this regulation must provide the district with the following information,
in writing, within 30 days of the date of district adoption:
- the name(s) of the owner and operator of the facility, and
- the location of the facility, and
- the number of sterilizers and aerators at the facility, and
- an estimate of the total pounds of ethylene oxide and sterilant gas used by the facility, in all sterilizers,
during the previous calendar year, as determined by a method approved by the district. A district may exempt a
source from this requirement if the district maintains current equivalent information on the source.
E. Reporting. Any person who owns or operates a sterilizer shall furnish a written report to the district
annually on the date specified by the distrlct, or, at the district's discretion, shall maintain such a report
and make it available to the district upon request. This report shall include one of the following, as determined
by the district:
- the number of sterilizer cycles and the pounds of ethylene oxide used per cycle for each sterilizer during
the reporting period, as determined by a method approved by the district: or
- the total pounds of sterilant gas and the total pounds of ethylene oxide purchased, used, and returned in the
previous calendar year, and determined by a method approved by the district.
F. Requirements. No person shall operate a sterilizer or aerator after the applicable date shown in column
(d), Table I, unless all of the following requirements are satisfied:
- there is no discharge of sterilizer exhaust vacuum pump working fluid to wastewater streams, and
- the exhaust system including , but not limited to, any piping, ducting, fittings, valves, or flanges, through
which ethylene oxide-contaminated air is conveyed from the sterilizer and aerator to the outlet of the control
device are leak-free, and
- all of the control requirements shown in Table I below for the applicable control category are met; and
- for facilities using more than 600 pounds of ethylene oxide per year, the back-draft valve is ducted to the
control device used to control the sterilizer exhaust stream or the aerator exhaust stream and
- for facilities using more than 5,000 pounds of ethylene oxide per year, the sterilizer door exhaust stream
is ducted to the control device used to control the aerator exhaust stream.
Control and Compliance requirements
| CONTROL CATEGORY
|Facility-wide Pounds of Ethylene OxideUsed per Year
Exhaust Streams to be Controlled
Exhaust Streams to be Tested
Date of Compliance
|less than or equal to 25
|more than 25 and less than or equal to 600
|more than 600 and less than or equal to 5,000
|more than 5,000
Sterilizer Door Hood
| * Not Applicable
- The requirements set forth in subsection (F) above do not apply to any facility which treats material in a
sterilizer and which uses a total of 25 pounds or less of ethylene oxide per calendar year.
- The district hearing board may grant an emergency variance from items (a) and (c) in Table I of subsection(F),
Requirements, to a person who owns or operates an acute care facility if response to a local medical emergency
requires increased operation of a sterilizer or aerator such that the requirements cannot be met. The demonstrated
need for such increased operation shall constitute "good cause" pursuant to Health and Safety Code Section
42359.5. The emergency variance shall be granted in accordance with this section and any applicable district rule
regarding the issuance of emergency variances for such occurrences, including the requirement that the emergency
variance shall not remain in effect longer than 30 days however, the emergency variance shall be granted only for
the period of time during which increased operation of a sterilizer or aerator is necessary to respond to the local
H. Compliance. The facility shall be in compliance with all provisions specified in subsection (F), Requirements.
no later than the date specified in column (d) of Table I.
- For the purpose of determining compliance with the control efficiency requirement shown in column (c) of Table
I, subsection (F), if a reduction in the amount of ethylene oxide across the control device is demonstrated, concentration
of ethylene oxide measured in the outlet of the control device is below 0.2 parts per million ethylene oxide, the
facility shall be considered to be in compliance with this requirement.
I. Alternate Compliance Date. The owner or operator of any facility which uses more than 600 pounds of
ethylene oxide per year may choose this alternate compliance option which addresses the date for compliance with
the requirements of subsection (F). If this compliance option is chosen, the owner or operator shall:
- within 3 months of the date of district adoption of regulations enacting this control measure, comply with
the requirements shown in subsections (F)(1) and (F)(2) and demonstrate a control efficiency of 99.9% for the sterilizer
exhaust stream in accordance with the source testing requirements set forth in subsection (i) and
- within 6 months of the date of district adoption of regulations enacting this measure, submit to the district
a plan to discontinue operation of all sterilizers and aerators or comply with the district subsections (F)(3),
(F)(4), and (F)(5), and
- within 18 months of the date of district adoption of regulations enacting this control measure, do one of the
- demonstrate to the satisfaction of the district that operation of all sterilizers and aerators at the facility
has been permanently discontinued or
- demonstrate compliance with the requirements of subsection (F)(3), (F)(4), and (F)(5), in accordance with the
source testing provisions set forth in subsection (i), below.
J. Source Testing. Source testing shall be conducted according to ARB Test Method 431 (Title 17, CCR,
Section 94143) and the method evaluations cited therein or an acceptable source test method approved by the Executive
Officer of the Air Resources Board. Specific requirements for application are given below:
- The test on a control device for a sterilizer exhaust stream shall be run with a typical load, as approved
by the district, in the sterilizer.
- The test on a control device for an aerator exhaust stream shall be run with a typical load, as approved by
the district, in the aerator.
- The inlet and outlet of the control device shall be sampled simultaneously during testing to measure the control
- The efficiency to each control device shall be determined under conditions of maximum ethylene oxide mass flow
to the device, under normal operating conditions. To measure the control efficiency of the control device on the
sterilizer exhaust stream, sampling shall be done during the entire duration of the first sterilizer evacuation
after ethylene oxide has been introduced. To measure the control efficiency of the control device on an aeretor
exhaust stream with a constant air flow, sampling shall be done during a period of at least 60 minutes, starting
15 minutes after aeration begins. To measure the control efficiency of the control device on an aerator exhaust
stream with a non-constant air flow, sampling shall be done during the entire duration of the first aerator evacuation
after aeration begins.
- There shall be no dilution of the air stream between the inlet and outlet test points during testing.