Section 10.12.110 Testing and Permitting of Applicants for Certified Emissions Testers and/or Certified Emission Repair Technicians.
Prior to the adoption of Ord. 03-2002 on 10/01/2002, Section 10.12.110 read as follows.
A. General Requirements. The Division shall comply with all the requirements
of
USEPA’ s Technical Guidance Document #EPA-AA-EPSD-IM-93-1, April 1994, adopted by
reference, pertaining to equipment, personnel, testing procedures, etc as determined to be
applicable by the Division. The Division shall also comply with all the related requirements of 40
CFR Part 51 VII, which is incorporated by reference, as determined by the Division.
1. The inspector shall reject from inspection
a vehicle which has not had repairs performed
as required by an emissions related recall notice, as specified in subsection KK of this section.
2. Unless a fast pass procedure is used, once
an official test is initiated, the inspector shall
conduct the test in its entirety.
3. If a vehicle stalls during a test, the inspector
shall void the test.
4. The inspector shall repeat a test which is
void for a reason other than unsafe condition,
except that if a vehicle stalls more than three times, the inspector shall reject the vehicle from
inspection.
5. The inspector shall check the vehicle registration
date to insure that a valid test for
registration purposes can be performed unless a referee test is being performed.
B. Vehicle Preparation.
1. Prior to vehicle inspection, the inspector
shall visually check the vehicle for a condition
which has potential to cause injury, damage the enhanced I/M program station or the test
equipment, or invalidate the inspection, including, but not limited to: overheating; leaks of
coolant, oil, or fuel; excessively worn or deflated tires; the use of a space saver spare tire on a
drive axle; visible tailpipe emissions other than steam; or a missing, damaged, or leaking exhaust
system. If the Division administers a Utah State Safety Inspection to the vehicle, the provisions
of this section are deemed satisfied.
a. The inspector shall check the vehicle for
exhaust system leaks by a procedure approved by
the Division.
b. If an unsafe condition is found, the inspector
shall reject the vehicle from testing.
c. If an unsafe condition develops during a test,
the inspector shall abort the inspection.
C. Vehicles capable of being operated on both
gaseous and liquid petroleum fuels shall be
tested for both fuels.
D. The inspector shall on 1984 and newer vehicles,
visually inspect for the presence and
apparent operability of the AIR system, catalytic converter, fuel restrictor, EGR system,
evaporative control system, PCV system, and gas tank cap in accordance with Division
procedures and record the information in the emissions analyzer. If these parts or systems have
been removed or are inoperable, the owner shall repair or replace the parts or systems before the
emissions test may be continued.
1. 1983 or older model year vehicles may receive
a test deemed appropriate by the Division,
but those vehicles found to be tampered shall not qualify for a waiver until the tampering is
repaired and the other requirements for a waiver are met.
E. The inspector shall direct the vehicle operator
to shift the transmission to park or neutral
and to set the parking brake, and request that all vehicle occupants exit the vehicle and proceed
to the customer waiting area. If the vehicle engine has been shut off, the inspector shall ensure
that the engine is restarted as soon as possible and is running at least thirty (30) seconds prior to
the initiation of inspection procedures. The inspector shall ensure that all vehicle accessories are
turned off and precondition the vehicle as specified by the Division.
F. The inspector shall ensure that the vehicle
is at normal operating temperature. A touch-test of the upper radiator hose or a visual check of the
vehicle dashboard temperature gauge is
acceptable.
G. Exhaust Emissions.
1. Dynamometer.
a. The inspector shall check the dynamometer
and CVS to ensure that they are in a warmed
up condition for official testing, safety monitoring equipment is functional and that all data links
are up and functional.
b. The inspector shall maneuver the vehicle onto
the dynamometer, position the drive wheels
on the dynamometer rolls, and rotate the rollers until the vehicle stabilizes laterally on the
dynamometer. Wet drive wheel tires will be dried to prevent slippage as necessary.
c. The inspector shall position and activate
the cooling equipment to direct air to the vehicle
cooling system, but not at the vehicle catalytic converter.
d. The inspector shall activate the vehicle restraint
system and restrain the vehicle.
e. The inspector shall position the exhaust gas
collection system to ensure complete capture
of the entire exhaust stream.
f. The inspector will test the vehicle with dynamometer
power absorption and inertia weight
settings automatically determined by the test equipment from a look-up table based on the
vehicle information in the database.
i. Except as provided in subsection (G)(1)(f)(v)
of this section, the inspector will test a
vehicle not listed in the look-up table using the applicable default power absorption and inertia
weight settings specified in subsections (G)(1)(f)(ii) or (G)(1)(f)(iii) of this section.
ii. Default power absorption and inertia weight
settings for passenger vehicles:
|
Number
of
Cylinders
|
Actual Road
Load
Horsepower
|
Test
Inertia
Weight
(Pounds)
|
|
3
|
8.3
|
2,000
|
|
4
|
9.4
|
2,500
|
|
5
|
10.3
|
3,000
|
|
6
|
10.3
|
3,000
|
|
8
|
11.2
|
3,500
|
|
10
|
11.2
|
3,500
|
|
12
|
12.0
|
4,000
|
iii. Default power absorption and inertia weight
settings for vehicles with gross vehicle
weight rating of ten thousand (10,000) pounds or less, excluding passenger vehicles:
|
Number
of
Cylinders
|
Actual
Road Load
Horsepower
|
Test
Inertia
Weight
|
|
3
|
8.3
|
2,000
|
|
4
|
9.4
|
2,500
|
|
5
|
10.3
|
3,000
|
|
6
|
10.3
|
3,000
|
|
8
|
12.0
|
4,000
|
|
10
|
12.7
|
4,500
|
|
12
|
13.4
|
5,000
|
iv. The Division will maintain a record of the
number of vehicles tested with a default
setting, the type of setting, and the test lane.
v. The Division may use additional default settings
as deemed necessary.
H. Ambient Conditions. The Division will record
the ambient temperature, absolute
humidity, and barometric pressure either continuously during the driving cycle or as a single set
of readings no more than four minutes before the start of the driving cycle.
I. Background Sample.
1. The Division shall sample, measure, and record
background concentrations of
hydrocarbons, carbon monoxide, oxides of nitrogen, and carbon dioxide in the enhanced I/M
program station.
a. The background concentrations will be sampled
as specified in subsection (V)(3)(e) of
this section, for a minimum of fifteen (15) seconds, within one hundred twenty (120) seconds of
the start of the driving cycle.
b. The background concentrations shall be measured
with the analyzers used to measure
tailpipe emissions.
c. The background concentrations of each pollutant
shall be recorded in the test record as
average readings over fifteen (15) seconds.
2. The Division shall suspend official testing
if the background concentration of a pollutant
exceeds both the outside ambient air level of the pollutant and the following applicable level:
a. Twenty (20) ppm hydrocarbons;
b. Thirty-five (35) ppm of carbon monoxide; or
c. Two ppm of oxides of nitrogen.
3. The Division shall not resume official testing
suspended under subsection (I)(2) of this
section until the background concentration of the pollutant is equal to or below the specified
level.
J. Exhaust Emissions Test.
1. Driving Cycle.
a. Except as provided in subsections (J)(1)(b)
and (J)(1)(c) of this section, the inspector shall
drive the vehicle over the following transient driving cycle, where time is in seconds and speed is
in miles per hour:
|
Time
|
Speed
|
Time
|
Speed
|
Time
|
Speed
|
Time
|
Speed
|
Time
|
Speed
|
|
0
|
0.0
|
48
|
25.7
|
96
|
0.0
|
144
|
24.6
|
192
|
54.6
|
|
1
|
0.0
|
49
|
26.1
|
97
|
0.0
|
145
|
24.6
|
193
|
54.8
|
|
2
|
0.0
|
50
|
26.7
|
98
|
3.3
|
146
|
25.1
|
194
|
55.1
|
|
3
|
0.0
|
51
|
27.5
|
99
|
6.6
|
147
|
25.6
|
195
|
55.5
|
|
4
|
0.0
|
52
|
28.6
|
100
|
9.9
|
148
|
25.7
|
196
|
55.7
|
|
5
|
3.0
|
53
|
29.3
|
101
|
13.2
|
149
|
25.4
|
197
|
56.1
|
|
6
|
5.9
|
54
|
29.8
|
102
|
16.5
|
150
|
24.9
|
198
|
56.3
|
|
7
|
8.6
|
55
|
30.1
|
103
|
19.8
|
151
|
25.0
|
199
|
56.6
|
|
8
|
11.5
|
56
|
30.4
|
104
|
22.2
|
152
|
25.4
|
200
|
56.7
|
|
9
|
14.3
|
57
|
30.7
|
105
|
24.3
|
153
|
26.0
|
201
|
56.7
|
|
10
|
16.9
|
58
|
30.7
|
106
|
25.8
|
154
|
26.0
|
202
|
56.3
|
|
11
|
17.3
|
59
|
30.5
|
107
|
26.4
|
155
|
25.7
|
203
|
56.0
|
|
12
|
18.1
|
60
|
30.4
|
108
|
25.7
|
156
|
26.1
|
204
|
55.0
|
|
13
|
20.7
|
61
|
30.3
|
109
|
25.1
|
157
|
26.7
|
205
|
53.4
|
|
14
|
21.7
|
62
|
30.4
|
110
|
24.7
|
158
|
27.3
|
206
|
51.6
|
|
15
|
22.4
|
63
|
30.8
|
111
|
25.2
|
159
|
30.5
|
207
|
51.8
|
|
16
|
22.5
|
64
|
30.4
|
112
|
25.4
|
160
|
33.5
|
208
|
52.1
|
|
17
|
22.1
|
65
|
29.9
|
113
|
27.2
|
161
|
36.2
|
209
|
52.5
|
|
18
|
21.5
|
66
|
29.5
|
114
|
26.5
|
162
|
37.3
|
210
|
53.0
|
|
19
|
20.9
|
67
|
29.8
|
115
|
24.0
|
163
|
39.3
|
211
|
53.5
|
|
20
|
20.4
|
68
|
30.3
|
116
|
22.7
|
164
|
40.5
|
212
|
54.0
|
|
21
|
19.8
|
69
|
30.7
|
117
|
19.4
|
165
|
42.1
|
213
|
54.9
|
|
22
|
17.0
|
70
|
30.9
|
118
|
17.7
|
166
|
43.5
|
214
|
55.4
|
|
23
|
14.9
|
71
|
31.0
|
119
|
17.2
|
167
|
45.1
|
215
|
55.6
|
|
24
|
14.9
|
72
|
30.9
|
120
|
18.1
|
168
|
46.0
|
216
|
56.0
|
|
25
|
15.2
|
73
|
30.4
|
121
|
18.6
|
169
|
46.8
|
217
|
56.0
|
|
26
|
15.5
|
74
|
29.8
|
122
|
20.0
|
170
|
47.5
|
218
|
55.8
|
|
27
|
16.0
|
75
|
29.9
|
123
|
20.7
|
171
|
47.5
|
219
|
55.2
|
|
28
|
17.1
|
76
|
30.2
|
124
|
21.7
|
172
|
47.3
|
220
|
54.5
|
|
29
|
19.1
|
77
|
30.7
|
125
|
22.4
|
173
|
47.2
|
221
|
53.6
|
|
30
|
21.1
|
78
|
31.2
|
126
|
22.5
|
174
|
47.2
|
222
|
52.5
|
|
31
|
22.7
|
79
|
31.8
|
127
|
22.1
|
175
|
47.4
|
223
|
51.5
|
|
32
|
22.9
|
80
|
32.2
|
128
|
21.5
|
176
|
47.9
|
224
|
50.5
|
|
33
|
22.7
|
81
|
32.4
|
129
|
20.9
|
177
|
48.5
|
225
|
48.0
|
|
34
|
22.6
|
82
|
32.2
|
130
|
20.4
|
178
|
49.1
|
226
|
44.5
|
|
35
|
21.3
|
83
|
31.7
|
131
|
19.8
|
179
|
49.5
|
227
|
41.0
|
|
36
|
19.0
|
84
|
28.6
|
132
|
17.0
|
180
|
50.0
|
228
|
37.5
|
|
37
|
17.1
|
85
|
25.1
|
133
|
17.1
|
181
|
50.6
|
229
|
34.0
|
|
38
|
15.8
|
86
|
21.6
|
134
|
15.8
|
182
|
51.0
|
230
|
30.5
|
|
39
|
15.8
|
87
|
18.1
|
135
|
15.8
|
183
|
51.5
|
231
|
27.0
|
|
40
|
17.7
|
88
|
14.6
|
136
|
17.7
|
184
|
52.2
|
232
|
23.5
|
|
41
|
19.8
|
89
|
11.1
|
137
|
19.8
|
185
|
53.2
|
233
|
20.0
|
|
42
|
21.6
|
90
|
7.6
|
138
|
21.6
|
186
|
54.1
|
234
|
16.5
|
|
43
|
23.2
|
91
|
4.1
|
139
|
22.2
|
187
|
54.6
|
235
|
13.0
|
|
44
|
24.2
|
92
|
0.6
|
140
|
24.5
|
188
|
54.9
|
236
|
9.5
|
|
45
|
24.6
|
93
|
0.0
|
141
|
24.7
|
189
|
55.0
|
237
|
6.0
|
|
46
|
24.9
|
94
|
0.0
|
142
|
24.8
|
190
|
54.9
|
238
|
2.5
|
|
47
|
25.0
|
95
|
0.0
|
143
|
24.7
|
191
|
54.6
|
239
|
0.0
|
b. The inspector shall follow a driving trace
which is an electronic, visual depiction of the
time/speed relationship of the driving cycle.
c. Beginning with second thirty (30) of the driving
cycle, if the vehicle meets fast pass
criteria for hydrocarbons, carbon monoxide, and oxides of nitrogen, the inspector may terminate
the test as per the requirements of the Division.
d. The Division may use alternate testing criteria
for vehicles with gross vehicle weight
ratings over ten thousand (10,000) pounds.
e. Shift Schedule.
i. Except as provided in subsection (J)(1)(e)(ii)
of this section, the inspector shall shift the
gears of a vehicle with manual transmission according to the following schedule over the driving
cycle, so that the shift occurs at the point in the driving cycle where the specified speed is
attained, and using only the shifts applicable to the number of gears:
|
Shift
Sequence
(gear)
|
Speed
(miles
per
hour)
|
Approximate
Cycle Time
(seconds)
|
|
1-2
|
15
|
9.3
|
|
2-3
|
25
|
47.0
|
|
Declutch
|
15
|
87.9
|
|
1-2
|
15
|
101.6
|
|
2-3
|
25
|
105.5
|
|
3-2
|
17
|
119.0
|
|
2-3
|
25
|
145.8
|
|
3-4
|
40
|
163.6
|
|
4-5
|
45
|
167.0
|
|
5-6
|
50
|
180.0
|
|
Declutch
|
15
|
234.5
|
ii. The Division may use alternate shift schedules
if deemed necessary.
K. Exhaust Emissions Measurement.
1. The CVS shall automatically initiate exhaust
emissions measurement at the start of the
driving cycle.
2. The CVS shall sample and record dilute exhaust
hydrocarbon, carbon monoxide, carbon
dioxide, and oxides of nitrogen emissions over the driving cycle by the following procedure:
a. Sample the analyzer voltage responses, constant
volume sampler pressure, constant
volume sampler temperature, dynamometer speed and dynamometer power at a frequency of no
less than five Hertz, and average the analyzer voltage levels over one-second intervals;
b. Properly time-correlate each analyzer signal
and the constant volume sampler signals to
the driving trace;
c. Convert the one-second average analyzer voltage
levels to concentrations, correct the
concentrations by subtracting the pre-test background concentrations, and convert the corrected
concentrations to grams for each second of the driving cycle; and
d. If multiple analyzers are used:
i. Simultaneously integrate each analyzer, using
as the official measurements the integrated
values from the analyzer which is lowest in range, except if the cumulative total duration of
emissions concentrations exceeding the low range scale is more than 5 seconds, then use as the
official exhaust emissions measurements the integrated values from the analyzer highest in range,
and
ii. Read background concentrations by each analyzer,
and use the reading made by the
analyzer used to determine the official exhaust emissions measurements as the official
background reading.
3. The Division will integrate and record negative
second-by-second values as zero.
4. Alternative Ways to Pass. If a vehicle meets
the composite exhaust emissions standard, or
the composite fast pass exhaust emissions standard for oxides of nitrogen, but does not meet a
composite exhaust emissions standard, or composite fast pass exhaust emissions standard for
hydrocarbons or carbon monoxide, as specified in Section 10.12.260, the Division may apply the
Phase 2 exhaust emissions standards, and Phase 2 fast pass exhaust emissions standards when
applicable, specified in Section 10.12.260.
5. Second Chance Testing. For an initial inspection
performed, the Division may
immediately conduct a second chance exhaust emissions test on a vehicle if the vehicle:
a. Fails the exhaust emissions test, and the
exhaust emissions of hydrocarbons, carbon
monoxide, and oxides of nitrogen are not greater than 1.5 times the applicable exhaust emissions
standards; and
b. Had been waiting in the test lane queue for
more than twenty (20) minutes.
L. Fast Pass Procedures.
1. The Division may apply fast pass exhaust emissions
standards as specified in Section
10.12.260 for passenger vehicles of model year 1983 and newer. The Division may make a fast
pass determination if the vehicle meets the composite fast pass exhaust emissions standard for
oxides of nitrogen and meets the:
a. Composite fast pass exhaust emissions standard
for both hydrocarbons and carbon
monoxide;
b. Phase 2 fast pass exhaust emissions standard
for both hydrocarbons and carbon monoxide;
c. Phase 2 fast pass exhaust emissions standards
for hydrocarbons and the composite fast
pass exhaust emissions standard for carbon monoxide; or
d. Composite fast pass exhaust emissions standard
for hydrocarbons and the Phase 2 fast
pass exhaust emissions standard for carbon monoxide.
2. The Division will continue to measure exhaust
emissions until either a fast pass
determination is made as specified in this subsection, or until the end of the driving cycle.
M. On-Board Diagnostics Interrogation Procedure.
1. On-Board Diagnostics Interrogation. For an
inspection performed after December 31,
1996, a model year 1994 or newer vehicle equipped with on board diagnostics shall be subject to
interrogation of the on-board diagnostics system.
a. The inspector shall reject a vehicle from
inspection if a component of the on board
diagnostics system is missing or damaged.
b. Except as provided in subsection (M)(1)(a)
of this section, the inspector shall interrogate
the on board diagnostics system following the test procedures specified by the Division and
detailed in Section 10.12.290.
2. On-Board Diagnostics Interrogation Standards.
After December 31, 1995, the on board
diagnostics system of a model year 1994 or later vehicle equipped with on board diagnostics
shall not contain any fault codes related to the emissions control equipment or to the power train
for the interrogation specified in this chapter, If the vehicle does contain a fault code it shall be
failed and the appropriate repair made prior to continuing with the test or other appropriate
action will be taken as detailed in Section 10.12.290.
N. Failed Vehicle and Reinspection Procedures.
1. Failed Vehicle. The inspector shall provide
the vehicle owner/operator with a report
which documents the failure and provides information about possible causes of the failure.
2. Reinspection.
a. The inspector shall reject from reinspection
a vehicle for which the documentation
required in subsection LL of this section is not provided.
b. The inspector shall collect the documentation
required in subsection LL of this section
from the operator of each vehicle which is reinspected.
c. For reinspection, the inspector shall perform
the same inspection procedures as the initial
inspection and apply the same inspection standards, including the exhaust emissions, and the on
board diagnostics interrogation, regardless of the reason for initial failure.
O. Dynamometer System Specifications.
1. General Requirements. The Division will use
a dynamometer system which operates
reliably during all ambient and climatic conditions that may be experienced in the inspection
area.
2. Automatic Setting Selection.
a. The Division may use a dynamometer system
capable of automatically selecting the
proper horsepower and inertia settings based on vehicle parameters contained in or entered into
the test system.
b. The Division will maintain look-up or equivalent
tables for horsepower and inertia
settings for tested vehicles.
3. Range and Curve of Power Absorber.
a. For vehicles up to ten thousand (10,000) pounds
gross vehicle weight rating, the Division
will use a dynamometer with a range of power absorption at fifty (50) miles per hour of four
horsepower to at least forty (40) horsepower, adjustable in 0.1 horsepower increments, and
accurate to +2 percent of point, whichever is greater.
b. If vehicles over ten thousand (10,000) pounds
gross vehicle weight up to twenty-six
thousand (26,000) pounds gross vehicle weight rating are tested on a dynamometer, the Division
may use a dynamometer with a range of power absorption at fifty (50) miles per hour of 4
horsepower to at least seventy-five (75) horsepower, adjustable in 0.1 horsepower increments,
and accurate to +0.25 horsepower or +2
percent of point, whichever is greater or devise an
alternate testing scenario for those vehicles.
4. Rolls. The Division will use dynamometers
equipped with twin rolls which:
a. Are coupled side to side and front to rear;
b. Are of diameter between 8.5 inches and 21.0
inches;
c. Are spaced to comply with the following equation
to within +0.5 inches and -0.25 inches,
where all units are in inches: Roll spacing = (24.375 + roll diameter) x sin (31.5153).
d. Accommodate tires with radii of eleven (11)
inches through twenty (20) inches.
e. Accommodate an inside track width of thirty
(30) inches and an outside track width of one
hundred eight (108) inches; and
f. Are of size, surface finish, and hardness
to minimize tire slip on initial acceleration under
all weather conditions, maintain accuracy of distance measurements, and minimize tire wear and
noise.
P. Inertia.
1. The Division will use a dynamometer system
with selectable inertia weight.
2. Except as provided in subsection (P)(3) of
this section, the Division will ensure that a
dynamometer employing mechanical inertia simulation meets the following requirements:
a. A dynamometer accommodating vehicles up to
ten thousand (10,000) pounds gross
vehicle weight rating is equipped with mechanical inertia weights providing test inertias of two
thousand (2,000) pounds through five thousand five hundred (5,500) pounds in increments no
greater than five hundred (500) pounds;
b. If the Division uses a dynamometer accommodating
vehicles up to twenty-six thousand
(26,000) pounds gross vehicle weight rating, The dynamometer will be equipped with
mechanical inertia weights providing test inertias of two thousand (2,000) pounds through
nineteen thousand five hundred (19,500) pounds in five hundred (500) pound increments;
c. The tolerance on the base inertia weight and
each flywheel is +1 percent of the specified
test weight; and
d. A method independent from the inertia weight
selection system identifies which flywheels
are actually rotating and the actual inertia during the driving cycle.
3. The Division may use a dynamometer employing
electrical inertia simulation, or a
combination of electric and mechanical simulation.
Q. Test Distance and Vehicle Speed.
1. The Division will use the total number of
dynamometer roll revolutions to calculate the
vehicle distance traveled, by measuring the actual roll distance for the composite driving cycle
and for each phase of the driving cycle with a tolerance of +0.01 mile. Pulse counters may be
used to calculate the distance directly if there are at least sixteen (16) pulses per revolution.
2. The testing equipment will measure the roll
speed with a tolerance of +0.1 miles per hour
using a roll speed measurement system capable of accurately measuring a 3.3 miles per hour per
second acceleration rate over a two-second period with a starting speed of ten (10) miles per
hour.
R. Vehicle Restraint. The Division will use a
vehicle restraint system which:
1. Minimizes vertical and horizontal forces on
the drive wheels such that exhaust emissions
levels are not significantly affected;
2. Is automatically or semi-automatically deployed
and stowed upon inspector initiation;
3. Permits unobstructed vehicle ingress and egress;
and
4. Safely restrains the vehicle under all operating
conditions without damaging the vehicle.
S. Vehicle Cooling. The Division will use a cooling
system which prevents vehicle
overheating during the inspection and which:
1. Directs air at five thousand four hundred
(5,400) +300 (three hundred) standard cubic feet
per minute to the cooling system of the vehicle as measured within twelve (12) inches of the
intake of the vehicle cooling system;
2. Is manually, automatically or semi-automatically
positioned; and
3. Avoids cooling the catalytic converter.
T. Full-time Four Wheel Drive Vehicles. The Division
will use equipment for testing full-time four wheel drive vehicles which:
1. Accommodates all vehicles up to ten thousand
(10,000) pound GVW of all wheel base
lengths;
2. Maintains speed synchronization between the
front and rear wheel rolls to within 0.2
miles per hour;
3. Applies the correct vehicle loading for the
driving cycle; and
4. Does not damage the four wheel drive system
during testing.
U. Augmented Braking.
1. If augmented braking is used, the Division
will use a system which is fully automatic and
automatically interlocked so that actuation is allowed only while the vehicle brakes are applied
and simultaneous engine acceleration is prevented.
2. Augmented braking may only be used from seconds
eighty-five (85) through ninety-five
(95), and after second two hundred twenty-three (223) of the driving cycle.
V. Constant Volume Sampler, Analysis System,
and Inspector Control Specifications.
1. Constant Volume Sampler.
a. General Requirements. A constant volume sampler
of the critical flow venturi type or the
sub-sonic venturi type will be used to collect vehicle exhaust samples. The Division shall use a
constant volume sampler system which conforms to the specifications of 40 CFR Section 86.109-90, which
is incorporated here-in by reference, and which:
i. Prevents condensation in the dilute sample
over the range of ambient conditions
experienced during testing. If heated lines are used to prevent condensation, the sample line and
components will be heated to a minimum of one hundred twenty (120) degrees Fahrenheit and a
maximum of two hundred fifty (250) degrees Fahrenheit. The temperature will be monitored
during the driving cycle;
ii. Has sufficient flow capacity to maintain
proper flow in the main venturi; and
iii. Uses materials which come into contact with
exhaust gas which are unaffected by, and do
not affect, the exhaust sample, such as stainless steel, silicon rubber, Teflontm,
or Tedlartm.
2. Sample System. The testing equipment will
use a sample system which:
a. Continuously collects a correctly proportioned
volume of sample for analysis;
b. Automatically detects deterioration or malfunction
of the exhaust sample collection
system; and
c. Is continuously purged when not taking samples.
3. Mixing Tee. The testing equipment will use
a mixing tee for diluting the vehicle exhaust
with ambient air which:
a. Is placed at the vehicle tailpipe exit as
specified in 40 CFR Section 86,109-90(a) (2) (iv);
b. Collects all of the exhaust from the exhaust
systems of all types of tested vehicles;
c. Does not cause static pressure variations
in the tailpipe greater than +5.0 inches of water;
d. Employs a device to positively locate the
tee with respect to distance from the tailpipe so
that the exhaust stream remains in the center of the mixing tee flow area, even if the vehicle
moves laterally from one extreme position on the dynamometer to the other extreme position;
e. Collects the background sample within twelve
(12) lateral feet and twelve (12)
longitudinal feet of the tee’ s position during the driving cycle, and within approximately four
vertical feet of the ground;
f. Collects a continuous dilute exhaust sample
for integration in a manner equivalent to the
procedures for collecting bag samples as described in 40 CFR Section 86.109-90; and
g. Collects all of the exhaust from each tailpipe
of vehicles equipped with dual exhaust
systems, and maintains equal flow from each tailpipe.
4. Analysis System.
a. General Requirements. The Division will use
an analysis system which:
i. Automatically samples, integrates, and records
dilute exhaust hydrocarbons, carbon
monoxide, carbon dioxide, and oxides of nitrogen upon initiation of the transient driving cycle;
ii. Automatically determines the vehicle pass/fail
status;
iii. Automatically prints a pass/fail report;
iv. Meets performance requirements, with respect
to accuracy, precision, drift, interferences,
and noise described for test instruments in 40 CFR Section 86 Subparts B, D, and N, 1992
edition, which is incorporated by reference, in the full range of operating conditions experienced
in the enhanced I/M program station;
v. Uses materials which come into contact with
exhaust gas which are unaffected by, and do
not affect, the exhaust sample, such as stainless steel, silicon rubber, Teflontm,
or Tedlartm;
vi. Is capable of reading a small volume sample
bag, and may employ a portable pump for
sampling the bag; and
vii. Has a filter element which is easily replaceable,
ensures reliable sealing after a filter
element change, and is heated if the sample line is heated.
b. Detection Methods and Instrument Ranges. The
analysis instrument ranges of this
subsection are based on the use of a constant volume sampler with flow capacity of seven
hundred (700) standard cubic feet per minute. The Division will adjust the ranges given in this
subsection before the use of a constant volume sampler with flow capacity other than seven
hundred (700) standard cubic feet per minute may be used.
i. The Division will use a flame ionization detector
with an analysis range of at least zero
ppm carbon to two thousand (2,000) ppm carbon to determine hydrocarbon emissions.
ii. The Division will use a non-dispersive infrared
analyzer with an analysis range of at least
zero ppm to ten thousand (10,000) ppm (one percent) to determine carbon monoxide emissions.
If two analyzers are used, the Division will use one analyzer for the range of zero ppm to one
thousand (1,000) ppm, or zero ppm to two thousand (2,000) ppm, and will use another analyzer
for the range of zero to one percent carbon monoxide.
iii. The Division will use a non-dispersive infrared
analyzer with an analysis range of at least
zero ppm to forty thousand (40,000) ppm (four percent) to determine carbon dioxide emissions.
iv. The Division will use a chemiluminescent
analyzer with an analysis range of at least zero
ppm to five hundred (500) ppm to determine oxides of nitrogen emissions. The nitrogen oxide
(NO) and nitrogen dioxide (NO2) measurements will be summed
to determine the oxides of
nitrogen measurement.
5. System Response. The Division will use an
analysis system which meets the following
system response requirements:
a. Vehicle emissions measured by the integration
system and from a bag sample
simultaneously collected over the same integration period will agree within +5
percent.
b. The system response time between a step change
at the sample probe and a reading of
ninety (90) percent of the step change will be less than ten (10) seconds. An alternative response
time may be used by the Division.
6. Integration. The Division will use an analysis
system which meets the following
integration requirements:
a. The analyzer voltage responses, constant volume
sampler pressure, constant volume
sampler temperature, clynamometer speed and dynamometer power will be sampled at a
frequency of no less than five Hertz; and the analyzer voltage levels will be averaged over one-second
intervals.
b. Each analyzer signal and the constant volume
sampler signals will be properly time-correlated to the driving trace.
c. The one-second average analyzer voltage levels
will be converted to concentrations, the
concentrations corrected by subtracting the pre-test background concentrations, the corrected
concentrations converted to grams for each second, and negative second-by-second values
integrated and recorded as zero.
d. If multiple analyzers are used:
i. The integration system will simultaneously
integrate each analyzer, and the official
measurements will be the integrated values from the analyzer which is lowest in range, except if
the cumulative total duration of emissions concentrations exceeding the low range scale is more
than five seconds, then the integrated values from the analyzer highest in range shall be the
official measurements.
ii. Background concentrations will be read by
both analyzers, and the official background
reading will be the reading made by the analyzer used to determine the official measurements.
W. Inspector Controls. The Division will use
inspector controls which are convenient to
operate from the driver’ s seat of the test vehicle, and provide for the inspector to:
1. Maneuver the vehicle onto and off the dynamometer
without damage to the vehicle or
console;
2. Activate and deactivate the vehicle restraint
system;
3. Override the cooling system, if automatically
activated;
4. Initiate the driving cycle, if not automatically
initiated;
5. Observe and verify the test vehicle identification
parameters and inertia weight and power
absorption settings;
6. Observe the driving trace which:
a. Is an electronic, visual depiction of the
time versus speed relationship of the driving cycle,
b. Is of sufficient magnitude and detail so that
the inspector may accurately track the driving
trace and anticipate upcoming speed changes, and
c. Clearly indicates gear shifts as specified
in subsection (J)(1)(e) of this section;
7. Observe indicated horsepower and vehicle speed;
8. Observe test time and coast-down time if not
part of the video drivers aid; and
9. Abort a test.
X. On-Board Diagnostics Interrogation Equipment
Specifications.
1. On-Board Diagnostics Interrogation Equipment.
To perform the on-board diagnostics
interrogation, the Division will use testing equipment which is compatible with data collection,
processing and other testing equipment.
Y. Quality Assurance and Maintenance -- General
Requirements.
1. The Division will develop, maintain, and modify
a comprehensive quality assurance plan
complying with the provisions of this chapter, and will implement the quality assurance plan
after approval of the plan.
2. The Division will include the following information
in the quality assurance plan:
a. Test assurance procedures to be conducted
by the Division for each test.
b. Periodic quality assurance check procedures
and precision check procedures to be
conducted by the Division on the test equipment.
c. For each test assurance procedure, periodic
quality assurance check, and precision check
conducted by the Division:
i. The primary standard to which each instrument,
device, or material used for a week is
traceable;
ii. The acceptable tolerance for each check;
iii. The corrective action to be taken for a
check result outside of the acceptable tolerance;
and
iv. The recheck procedure to follow corrective
action;
d. Maintenance procedures to be conducted by
the Division on the test equipment; and
e. Record keeping practices to be conducted by
the Division.
3. If a test assurance procedure is failed, the
Division will record the event and void the test.
4. If a periodic quality assurance check or precision
check is failed, the Division will record
the event, automatically prevent official testing, and take immediate corrective action.
5. Maintenance Log.
a. The Division will keep a maintenance log for
each test system and record each
maintenance event in the log.
b. The Division will keep each maintenance log
for the duration of the vehicle emissions
inspection program.
6. Blind Sample Program Participation. The Division
will participate in a blind gas sample
program, and should:
a. Analyze four samples each year;
b. Analyze a sample once each year in each test
lane; and
c. Ensure that the blind sample vendor makes
the results directly available to the Division.
7. The Division will perform quality assurance
audits.
Z. Test Assurance Procedures.
1. Speed Excursions From the Driving Cycle.
a. Exceptions. A speed excursion from the driving
cycle which is outside of the limits
specified in subsection (Z)(2)(b) of this section is acceptable if the excursion is:
i. No more than two seconds in duration;
ii. Below the required speed during an acceleration,
if the vehicle is operated at maximum
available power until the vehicle speed is within the specified limits; or
iii. Does not exceed four miles per hour, and
occurs during one of the following
decelerations:
(A) Between seconds eighty-five (85) to ninety-five
(95), inclusive, or
(B) Between seconds two hundred twenty-five (225)
through two hundred thirty-nine (239),
inclusive.
b. Except as provided in subsection (Z)(2)(a)
of this section, the Division shall automatically
void a test if an excursion from the driving cycle exceeds:
i. An upper limit of two miles per hour higher
than the highest point on the driving trace at
the given time, within one second of the given time; or
ii. A lower limit of two miles per hour lower
than the lowest point on the driving trace at the
given time, within one second of the given time.
2. Speed Variations From the Driving Cycle. The
Division will employ a method to ensure
that excessive speed variations are avoided, including criteria for automatically voiding a test in
which an excessive speed variation occurs.
3. Distance Criteria.
a. The Division will measure that actual distance
traveled by the vehicle for the test and the
equivalent vehicle speed.
b. The Division will void a test if the difference
between the measured distance traveled and
the theoretical distance traveled exceeds +0.05 miles.
4. Dynamometer Controller Check.
a. For each test vehicle, the Division will compare
the measured horsepower integrated over
seconds fifty-five (55) to eighty-one (81) of the driving cycle and divided by twenty-six (26)
seconds, and the measured horsepower integrated over seconds one hundred eighty-nine (189) to
two hundred one (201) of the driving cycle and divided by twelve (12) seconds, to the theoretical
horsepower calculated based on the observed speed over the same portion of the test.
b. The Division will void a test if the difference
between theoretical horsepower and
measured horsepower exceeds one of the following limits:
i. +0.5
horsepower for vehicles of eight thousand five hundred (8,500) pounds or less gross
vehicle weight rating; or
ii. +2
horsepower for vehicles of greater than eight thousand five hundred (8,500) pounds
gross vehicle weight rating, if applicable.
c. Alternate dynamometer controller checks may
be used after approval by the Division.
5. Inertia Weight Selection.
a. The Division will verify operation of the
inertia weight selected for each test vehicle as
specified in subsection (P)(2)(d) of this section. If a system using electrical inertia simulation is
used, the Division will employ an algorithm to identify the actual inertia force applied during the
driving cycle.
b. The Division shall void a test if the difference
between the observed inertia and the
required inertia exceeds +1.0 percent.
6. Constant Volume Sampler Operation.
a. The Division will verify constant volume sampler
operation by one of the following
methods:
i. For a subsonic type constant volume sampler,
verify the constant volume sampler
operation throughout the test by monitoring the difference between upstream pressure and throat
pressure; or
ii. For a critical flow type constant volume
sampler, verify the constant volume sampler
operation for each test by measuring the:
(A) Absolute pressure difference across the venturi,
or
(B) The blower vacuum behind the venturi for
minimum levels needed to maintain choke
flow for the venturi design.
b. The Division will establish and use limits
to satisfy the requirements of subsection
(Z)(6)(a) of this section. The Division will void a test if the monitored pressure difference is
outside the limits.
7. Fuel Economy.
a. The Division will determine fuel economy limits
for each test inertia selection by:
i. Using the lowest horsepower setting typically
selected for the inertia weight to determine
an upper test vehicle fuel economy limit;
ii. Using the highest horsepower setting typically
selected for the inertia weight to determine
a lower test vehicle fuel economy limit; and
iii. When the range between the lowest and highest
horsepower setting is greater than five
horsepower, determining two sets of fuel economy limits as specified in subsection (Z)(7)(a)(i)
and (ii) of this section.
b. For each test, the Division will calculate
the fuel economy of the test vehicle and compare
to the upper and lower limits determined in subsection (Z)(7)(a) of this section for the test inertia
and horsepower selected. The Division shall void a test if the measured fuel economy is greater
than 1.5 times the upper limit.
AA. Dynamometer Periodic Quality Assurance Checks.
1. Coast Down Check.
a. The Division should conduct a coast down check
once per week by a procedure equivalent
to that described in 40 CFR Section 86.118-78, which is incorporated by reference, and should:
i. If a vehicle is used to motor the dynamometer
to the initial coast-down speed, lift the
vehicle off the dynamometer prior to the start of the coast down procedure, and conduct the
procedure without a vehicle on the dynamometer;
ii. Check the base dynamometer inertia and the
base inertia plus each prime inertia weight
flywheel;
iii. Use at least two horsepower settings for
each inertia weight, within the normal range of
inertia weight;
iv. Check coast down between the speeds of fifty-five
(55) to forty-five (45) miles per hour
and between the speeds of twenty-two (22) to eighteen (18) miles per hour;
v. Use a clock which is routinely verified to
be accurate to the nearest 0.01 seconds when
summing one thousand (1,000) seconds;
vi. Provide for automatic computation of the
coast down check results;
vii. Automatically record the coast down check
results on electronic media with a date and
time stamp.
b. The Division shall take corrective action
if the difference between the measured coast
down time and the theoretical coast down time exceeds one of the following values:
i. For tests using inertia weights of less than
eight thousand five hundred (8,500) pounds:
(A) +1
second for the fifty-five (55) to forty-five (45) miles per hour coast down check; or
(B) +7
percent on the twenty-two (22) to eighteen (18) miles per hour coast down check.
ii. +10
percent for tests using inertia weights of eight thousand five hundred (8,500) pounds
or more.
2. Roll Speed Check.
a. The Division should check roll speed and roll
counts once each day by a means external to
the dynamometer rolls, such as a photo tachometer, and shall take corrective action for a
deviation exceeding +0.2 miles per hour.
b. As an alternative to the roll speed check,
the Division may use a redundant roll speed
transducer independent of the primary transducer. The Division should check the accuracy of
redundant systems by means external to the dynamometer once each month.
3. Full-time Four Wheel drive Dynamometer. For
a dynamometer accommodating full-time
four wheel drive vehicles, in addition to the checks required in subsections (AA)(1) and (2) of
this section, the Division should check the speed synchronization between the front the rear rolls
once each day, and shall take corrective action for a deviation exceeding +0.2
miles per hour.
BB. Constant Volume Sampler Period Quality Assurance
Checks.
1. Flow Calibration Check. The Division should
calibrate the constant volume sampler flow
at six months after the constant volume sampler is put into official use and once every twelve
(12) months thereafter, and following each repair, and should:
a. Calibrate the flow of a critical flow venturi
at six flow rates, including the nominal, rated
flow rate and a rate below the rated flow rate;
b. Calibrate the flow rate of a subsonic venturi
at six flow rates, including the nominal, rated
flow rate, a rate below the rated flow rate, and a rate above the rated flow rate; and
c. Use flow calibration points which cover the
range of variation in flow experienced in
testing.
2. System Check. The Division should check the
constant volume sampler flow calibration at
the nominal design flow once per day by a procedure that identifies deviations in flow from the
true value and equivalent to the procedure in 40 CFR Section 86.119-90 (c), and shall take
corrective action if a deviation in flow exceeds +4 percent.
3. Flow Passages Check. The Division will check
flow passages to ensure proper sample
flow.
a. The Division will check the sample probe,
and clean it if necessary, once per month.
b. The Division will check critical flow venturi
passages, and clean them if necessary, once
per year.
4. Probe Flow Check. The Division will check
the indicator identifying the presence of
proportional probe flow once per day.
5. Leak Check. The Division will check the vacuum
portion of the sample system for leaks
once per day and following an action which violates the system integrity.
CC. Analysis System Periodic Quality Assurance Checks.
1. Calibration Curve Limit Check. The Division
will use a software algorithm to perform a
zero and span adjustment and subsequent calibration curve adjustment, and will take corrective
action if:
a. The adjustment of an up-scale span point exceeds
a tolerance of +0.4 percent of point; or
b. A cumulative software up-scale, zero, or span
adjustment differs by more than +10
percent from the most recent calibration curve.
2. Daily Calibration Check. The Division will
check the calibration curve for each analyzer
each day prior to official testing by the following procedure:
a. Introduce a zero gas and adjust the analyzer
if necessary to correctly read zero;
b. Introduce an up-scale span gas and adjust
the analyzer if necessary within the tolerance of
subsection (CC)(1)(b) of this section; and
c. Introduce a mid-scale span gas and ensure
that the analyzer reads the gas to within 2.5
percent of point.
3. Spanning Frequency.
a. Except as specified in subsection (CC)(3)(b)
of this section, the Division will check, and
adjust as necessary, the zero and up-scale span points as specified in subsections (CC)(2)(a) and
(b) of this section each day at two-hour intervals following the daily calibration check of
subsection (CC)(2) of this section. Beginning with the first check after the daily calibration
check, the Division shall cease official testing and take corrective action if the:
i. Up-scale span point differs by more than +2.0
percent from the previous check; or
ii. Zero point differs from the previous check
by more than two ppm hydrocarbons, one ppm
oxides of nitrogen, ten (10) ppm carbon monoxide, or forty (40) ppm carbon dioxide.
b. The Division may zero the analyzer prior to
each test as an alternative to the span checks
specified in subsection (CC)(3) of this section.
4. Daily Cross Check. The Division will analyze
a checking sample of gas each day
following the daily calibration check of subsection (CC)(2) of this section.
a. The Division will use a checking sample which
differs from the calibration gas used for
the daily calibration check.
b. The concentration of the checking sample of
gas may be either in the lower end, the
higher end, or near the middle of the range which corresponds to approximately 0.5 to three
times the composite exhaust emissions standards in grams per mile for hydrocarbons, carbon
monoxide, carbon dioxide, and oxides of nitrogen for 1984 and later model year gasoline-powered passenger
vehicles, as specified in Section 10.12.260. The Division will select the
checking sample concentration in a random manner such that an even distribution over the range
is chosen over time.
c. The Division will use the same checking sample
mixture for each analyzer.
d. The Division shall suspend official testing
and take corrective action if the deviation in
analysis of the concentration of the checking sample from the historical mean and standard
deviation for the analyzers at the enhanced I/M program station and for the analyzers at all
stations exceeds three sigma.
5. Oxides of Nitrogen Convertor Check. The Division
should check the convertor efficiency
of the nitrogen dioxide to nitric oxide convertor once each week by a procedure equivalent to 40
CFR Section 86.123-78, which is incorporated by reference, except that the Division shall use
nitric oxide gas with concentration in the range of one hundred (100) ppm to three hundred (300)
ppm.
6. NO/NOx
Flow Balance. The Division should check the flow balance between the nitric
oxide and oxides of nitrogen test modes once per week, and may combine the check with the
oxides of nitrogen convertor check of subsection (CC)(5) of this section.
7. Monthly Calibration Check.
a. The Division will verify the analyzer calibration
curve monthly, and will:
i. Consider the entire range of the analyzer
as one curve, and if the analyzer has more than
one measurement transducer, consider each transducer as an analyzer;
ii. Use at least five calibration points plus
zero in the lower portion of the analyzer range,
corresponding to an approximate average concentration of two grams per mile hydrocarbons,
thirty (30) grams per mile carbon monoxide, three grams per mile oxides of nitrogen, and four
hundred (400) grams per mile carbon dioxide;
iii. If two analyzers are used in conjunction,
one for the low range and the other for the high
range, use at least five calibration points plus zero in the lower portion of the high range scale,
corresponding to approximately one hundred (100) percent of the full-scale value of the low
range analyzer;
iv. Use at least five calibration points to define
the calibration curve above the five lower
calibration points;
v. Use the calibration zero gas to set the analyzer
zero;
vi. Use a curve which is a polynomial of no greater
order than fourth order; and
vii. Except as provided in subsection (CC)(7)(b)
of this section, ensure that the curve fits that
data within +2.0 percent at each calibration point as specified
in 40 CFR Sections 86.121-90,
86.122-78, 86.123-78, and 86.124-78, which are incorporated by reference.
b. For the two lowest calibration points, the
allowable curve fit required by subsection
(CC)(7)(a)(vii) of this section may be five percent if the points are below a value corresponding
to an average concentration of approximately one gram per mile of hydrocarbons, fifteen (15)
grams per mile of carbon monoxide, 1.5 grams per mile of oxides of nitrogen, and two hundred
(200) grams per mile of carbon dioxide.
c. The Division will use a confirming calibration
standard which is between forty (40)
percent and eighty (80) percent of full scale and which is not used for curve generation. The
Division shall take corrective action if the curve cannot be verified with a tolerance of +2.5
percent.
8. Bag Sample Check.
a. The Division should collect vehicle exhaust
in a sample bag simultaneously with the
collection of the continuous exhaust sample during an exhaust emissions test once each calendar
quarter, for each of Phase 1 and Phase 2 at a minimum, and analyze the bag sample with the test
equipment at the conclusion of the test.
b. The Division shall take corrective action
if the difference between the bag sample
measurement and the continuous sample measurement exceeds +10
percent.
9. Response Time Check.
a. The Division should check the response time
of each analyzer, including the complete
sample system from the sample probe to the analyzer, once each week, during the check for
compliance with the bag sample check of subsection (CC)(8) of this section, and after a repair or
modification to the flow system.
b. The Division shall suspend official testing
and take corrective action for a system
response time which does not meet the requirements of subsection (V)(5) of this section.
10. Flame Ionization Detector Check.
a. The Division should check the flame ionization
detector for proper peaking and
characterization once each month and after each maintenance event, using the analyzer
manufacturer recommended procedures.
b. The Division should check the methane response
of the flame ionization detector once
each month with a concentration of approximately fifty (50) ppm methane. The Division shall
take corrective action if the methane response is outside the range of 1.0 through 1.3, calculated
by the following equation:
|
Ratio of
methane
=
|
Flame
ionization
detector
response
(ppmC)
|
|
response
Cylinder
methane
(ppmC)
|
11. Integrator Check.
a. The Division should check the integrator once
every three months, by simultaneously
sampling, by the normal integration method and by the bag method, the emissions from a vehicle
with exhaust emissions test values between sixty (60) percent and four hundred (400) percent of
the exhaust emissions standards for a model year 1984 gasoline-powered passenger vehicle, as
established in Section 10.12.260.
b. The Division will store the data from each
of the normal integration and bag methods in a
historical data base for determining normal and deviant performance for each test lane, for each
enhanced I/M program station, and for all enhanced I/M program stations combined.
c. The Division shall take corrective action
if a deviation between the integrator and the bag
readings exceeds +10 percent.
12. Interference. The Division should check the
carbon monoxide, carbon dioxide, and
oxides of nitrogen analyzers for water interference prior to implementation and once each year
under the environmental conditions experienced on a high ambient temperature summer day.
a. For analyzers used with a constant volume
sampler of flow rate seven hundred (700)
standard cubic feet per minute or greater:
i. For the carbon monoxide analyzer:
(A) A gas mixture of four percent CO2
in N2 bubbled through water with a saturated-mixture
temperature of forty (40) degrees Celsius shall produce a response of no greater than ten (10)
ppm at forty (40) degrees Celsius; and
(B) The allowable interference level shall be
adjusted to coincide with the saturated-mixture
temperature used, using a rejection ratio of nine thousand (9,000) to one.
ii. For the carbon dioxide analyzer:
(A) A calibration zero gas bubbled through water
with a saturated-mixture temperature of
forty (40) degrees Celsius shall produce a response of no greater than forty (40) ppm; and
(B) The allowable interference level shall be
adjusted to coincide with the saturated-mixture
temperature used, using a rejection ratio of two thousand (2,000) to one.
iii. For the oxides of nitrogen analyzer:
(A) A calibration zero gas bubbled through water
with a saturated-mixture temperature of
four hundred (400) degrees Celsius shall produce a response of no greater than one ppm; and
(B) The allowable interference level shall be
adjusted to coincide with the saturated-mixture
temperature used, using a rejection ratio of ninety thousand (90,000) to one.
b. For an analyzer used with a constant volume
sampler of flow rate less than seven hundred
(700) standard cubic feet per minute, the Division shall adjust the allowable interference
responses proportionately downward.
DD. On-Board Diagnostics Interrogation Equipment Periodic Quality Assurance
Checks.
1. On-Board Diagnostics Interrogation Equipment.
For the on board diagnostics
interrogation equipment, the Division will follow the quality assurance procedures specified by
the equipment manufacturer.
EE. Overall System Performance Quality Assurance.
1. Emissions Levels.
a. On a monthly basis, the Division should monitor
and record the average, median, tenth
percentile, and ninetieth percentile values of the composite emissions of hydrocarbons, carbon
monoxide, carbon dioxide, and oxides of nitrogen measured for each test lane, for each enhanced
I/M program station, and for all enhanced I/M program stations combined; and
b. If a difference in the monthly average of
a test lane from the enhanced I/M program
station average or from the combined enhanced I/M program station average, or of an enhanced
I/M program station from the combined enhanced I/M program station average, is greater than
+10 percent, the Division shall conduct an investigation to
determine whether the single test lane
of facility has a systematic equipment operating error or difference. Where it can be determined
that the averages of an enhanced I/M program station are offset from the averages of other
enhanced I/M program stations based on the mix of the vehicles tested, the offset shall be
included in the calculation of the difference. If a systematic equipment or operating error or
difference is found, the Division shall suspend official testing, initiate immediate corrective
action, and resume testing when the situation is corrected.
c. The Division will adjust the monitoring period
if necessary, to ensure that a reasonably
random sample of vehicles is tested in each test lane.
2. Pass/Fail Statistics.
a. On a monthly basis, the Division will monitor
and record the average number of passing
vehicles and the average number of failing vehicles for each test lane, each enhanced I/M
program station, and all enhanced I/M program stations combined.
b. If a difference in the monthly average of
a test lane from the enhanced I/M program
station average or from the combined enhanced I/M program station average, or of an enhanced
I/M program station from the combined enhanced I/M program station average, is greater than
+15 percent, the Division shall conduct an investigation to
determine whether the single test lane
or facility has a systematic equipment or operating error or difference. Where it can be
determined that the averages of an enhanced I/M program station are offset from the averages of
other enhanced I/M program stations based on the mix of the vehicles tested, the offset shall be
included in the calculation of the difference. If a systematic equipment or operating error or
difference is found, the Division shall suspend official testing, initiate immediate corrective
action, and resume testing when the situation is corrected.
c. The Division will adjust the monitoring period
if necessary to ensure that a reasonably
random sample of vehicles is tested in each test lane.
FF. Control Charts.
1. General Requirements.
a. The Division will use control charts and statistical
process control theory to determine,
forecast, and maintain performance of the inspection network.
b. The Division will maintain control charts
for each test lane, each enhanced I/M program
station, and all enhanced I/M program stations combined, and will track key system parameters,
as determined by the Division. When a key system parameter approaches control chart limits, the
Division will closely monitor the system and initiate corrective action to prevent the system from
exceeding control chart limits. If a key system parameter exceeds control chart limits, the
Division shall suspend official testing, initiate immediate corrective action, and resume testing
when the situation is corrected.
c. The Division will maintain control charts
for each inspector. The Division will monitor
performance near control chart limits and take corrective action as needed, which may include
retraining or dismissal.
2. Control Charts for a Test Lane. In the test
lane control charts, the Division will include
parameters that permit the cause for abnormal performance of a test lane to be pinpointed to a
system or component, including at a minimum the following information.
a. The number of voided tests, including test
type and reason;
b. The difference between theoretical and measured
coast-down times for the dynamometer;
c. The difference between theoretical and measured
constant volume sampler flow;
d. For the analysis system:
i. Except for the first check of the day, the
up-scale span change from the last up-scale span,
or the software correction to the calibration curve as a result of an up-scale span change;
ii. The difference between the analyzer response
to the daily cross-check and the test gas
concentration;
iii. The difference between the integrated measurements
and the bag measurements,
iv. The system response time,
v. The flame ionization detector methane response
ratio; and
vi. The ambient background concentrations;
e. The emissions levels as required in subsection
(EE)(1) of this section;
f. The pass/fail statistics as required in subsection
(EE)(2) of this section; and
g. The difference between theoretical or measured
values for other parameters measured
during quality assurance procedures.
3. Control Charts for an Enhanced I/M Program
Station. In the enhanced I/M program station
control charts, the Division will include the station averages of the control charts for each test
lane at the enhanced I/M program station.
4. Combined Control Charts for All Enhanced I/M
Program Stations. In the combined
control charts for all enhanced I/M program stations, the Division will include averages of the
control charts for each enhanced I/M program station.
5. Control Charts for Individual Inspectors.
a. In the control charts for individual inspectors,
the Division will include parameters that
will allow the cause for abnormal performance to be evaluated. including the following at a
minimum:
i. The number of voided tests, overall and by
test type and reason;
ii. The number of aborted tests, overall and
by test type and reason;
iii. Data capture errors; and
iv. Record keeping errors, including accountability
for certificates.
b. The Division will use the combined control
charts for inspectors at each enhanced I/M
program station and at all enhanced I/M program stations combined as references for comparison
to control charts for individual inspectors.
GG. Gas Specifications.
1. Flame Ionization Detector.
a. The Division will use propane for the flame
ionization detector gas. A multi-component
gas may also be used under circumstances determined by the Division.
b. The Division will use fuel for the flame ionization
detector which is forty (40) percent +2
percent hydrogen, and the balance helium.
c. The Division will use zero grade air as the
oxidizer for the flame ionization detector,
which is artificial air containing eighteen (18) to twenty-one (21) mole percent oxygen and the
balance nitrogen.
2. Calibration Gas. To generate and check a calibration
curve, the Division will use a gas
traceable to a National Institute of Standards and Technology standard reference material or
certified reference material, to within one percent of the standard by gas comparison methods.
3. Calibration Zero Gas.
a. The Division will ensure that impurities in
calibration zero gas do not exceed 0.1 ppm
carbon, 0.5 ppm carbon monoxide, one ppm carbon dioxide, and 0.1 ppm oxides of nitrogen.
b. The Division will use calibration zero grade
air for the calibration zero gas for the flame
ionization detector.
c. For the calibration zero gases for the carbon
monoxide, carbon dioxide, and oxides of
nitrogen analyzers, the Division will use calibration zero grade nitrogen or calibration zero grade
air.
4. Span Gas.
a. For an up-scale span adjustment, cross check,
or mid-scale span check, the Division will
use a gas which is traceable to a National Institute of Standards and Technology standard
reference material or certified reference material, to within two percent of the standard by gas
comparison methods.
b. The Division will use zero span gas for the
working zero gas.
i. Working zero grade air or calibration zero
grade air will be used for the flame ionization
detector zero span gas.
ii. Working zero grade nitrogen or air will be
used for the carbon monoxide, carbon dioxide,
and oxides of nitrogen analyzers zero span gases. Calibration zero grade nitrogen or air may also
be used.
c. The Division will use an up-scale span gas
with concentration corresponding to
approximately eighty (80) percent of full scale.
d. The Division will use a mid-scale span gas
with concentration corresponding to
approximately fifteen (15) percent of full scale.
e. The Division will verify a span gas concentration
before the gas is placed into service and
immediately after a monthly calibration curve check. If the reading on the span gas exceeds the
tolerance given in subsection (GG)(4)(a) of this section, the Division shall remove the system or
gas from service until corrective action is taken.
5. Working Zero Gas. The Division will ensure
that impurities in working zero grade gas do
not exceed one ppm carbon, two ppm carbon monoxide, four hundred (400) ppm carbon dioxide,
and 0.3 ppm oxides of nitrogen.
HH. Enhanced I/M program station.
1. General Requirements.
a. The Division shall operate each enhanced I/M
program station.
b. The Division will perform quality assurance
checks, program evaluation functions, and
referee inspections.
c. The Division will collect and maintain inspection
data and enhanced I/M program station
operation data in compliance with the provisions of this chapter.
d. Any person employed by the Division for enhanced
I/M program station operation, may
not engage in any business or function which is a conflict of interest as defined in Davis County
personnel policies.
2. Test Lanes.
a. The Division will ensure each test lane accommodates
all tested vehicles up to and
including ten thousand (10,000) pounds gross vehicle weight rating, other than full-time four
wheel drive vehicles.
b. The Division may provide a minimum of one
test lane at each enhanced I/M program
station accommodating all tested vehicles over ten thousand (10,000) pounds GVW up to and
including twenty-six thousand (26,000) pounds gross vehicle weight rating and may devise an
alternate testing requirement for those vehicles.
c. The Division will ensure a minimum of one
test lane at each enhanced I/M program
station accommodates all tested vehicles with full-time four wheel drive up to ten thousand
(10,000) pounds gross vehicle weight.
3. Inspectors.
a. The Division will provide training which meets
the provisions of this chapter to each
inspector before the inspector may perform inspections.
b. The Division will provide periodic in-service
inspector training, over a period established
by the Division.
c. The performance of an inspector may be periodically
reviewed by the Division, either
overtly or covertly. The Division shall ensure that any failure of an inspector to adequately
implement the provisions of this chapter is corrected. Correction may include retraining or
dismissal of the inspector.
d. The Division may develop, maintain, and modify
an inspector training program, to include
both classroom and hands-on training, with provisions for initial and periodic in-service training.
e. Inspectors or other employees of the Division
who fraudulently test vehicles, provide
safety inspections, provide certificates of compliance, waivers, vehicle registrations, registration
stickers, and/or any other function, service and/or commodity governed by this chapter are in
violation of this chapter and any other applicable laws. They are also liable for the costs of the
functions, services and/or commodities which are fraudulently provided. They are also subject to
termination in accordance with the Davis County Personnel Ordinance.
4. Record Keeping. The Division will maintain
the following records, separately and in
chronological order, for a minimum of three years:
a. Inspection records stored on computer readable
media in a format established by the
Division;
b. Equipment maintenance records in compliance
with the provisions of this chapter; and
c. Results of periodic quality assurance checks
in compliance with the provisions of this
chapter, including:
i. The test lane number, date, and start time,
ii. The concentration values of the calibration
gases used to perform gas characterization,
and
iii. Corrective action taken.
5. Fees.
a. The Division shall collect the fee established
in Section 10.12.250 from the vehicle owner
for an initial inspection or a second or subsequent reinspection.
b. The Division shall accept payment of safety
inspection, inspection, reinspection, permit
fees, late fees and any other fees or charges for services or parts in cash or personal check, or
with a major credit card if approved for use by the Division.
c. If a certificate is lost or damaged, a vehicle
owner may obtain a duplicate certificate from
the Division. The vehicle owner shall pay the fee established in Section 10.12.250.
II. Technicians Vehicle Report.
1. The Division will issue a report containing
information on test results of a vehicle which
has failed an emissions inspection to a person seeking to have repairs performed on the vehicle.
2. The Division may make the report available
electronically to repair facilities, providing
read-only, convenient, and standardized access.
3. The Division may include the following information
in the report:
a. The information specified in subsection (MM)(2)
of this section;
b. For an exhaust emissions failure, second-by-second
emission levels in grams per second
for each pollutant, and the corresponding average values for passing vehicles of the same model
year, manufacturer, and engine family;
c. For an on-board diagnostics interrogation
failure, fault codes stored in the vehicle on-board diagnostics system related to the emissions control
equipment and to the power train.
JJ. Feedback Reports.
1. The Division may make information electronically
available on vehicles which have
received emissions related repairs and have been submitted for reinspection, providing at a
minimum, the information specified in subsection (JJ)(2) of this section.
2. The Division may provide a quarterly feedback
report to certified emissions repair
facilities which have performed emissions related repairs on vehicles submitted for reinspection.
The report should include, for the reporting period, the following statistics on vehicles submitted
for reinspection:
a. The total number;
b. The number failing the first reinspection;
c. The number receiving waivers after the first
reinspection;
d. The reinspection failure rate;
e. The reinspection waiver rate; and
f. The multiple reinspection rate.
3. The Division may provide information on emissions
reductions and energy savings on
vehicles which have received emissions related repairs and have been submitted for reinspection
on a monthly, quarterly and annual basis:
a. The quantity (tons or pounds) of hydrocarbon,
carbon monoxide, and oxides of nitrogen
emission reductions, for:
i. All emissions related repairs;
ii. Repairs to passing vehicles;
iii. Repairs to waived vehicles; and
iv. Repairs to failed vehicles.
b. The fuel economy savings for each initial
inspection failure type, for the categories of
repairs specified in subsection (JJ)(3)(a) of this section.
KK. Compliance With Emissions Related Recalls.
1. The owner of a vehicle scheduled for inspection
under this chapter shall have vehicle
repairs performed as required by any emissions related recall notice before presenting the vehicle
for inspection.
2. A vehicle found not to have had repairs performed
as required by an emissions related
recall notice will be rejected from inspection. The vehicle owner shall demonstrate compliance to
the satisfaction of the Division before the vehicle is inspected.
LL. Reinspection. The owner of a vehicle which has failed an inspection
shall present the
vehicle for reinspection after emissions related repairs have been performed on the vehicle.
1. The vehicle owner shall provide documentation,
in a form prescribed by the Division,
indicating all of the following information for the vehicle:
a. The repairs which were performed;
b. By whom the repairs were performed; and
c. Any emissions related repairs recommended
by the technician which were not performed.
2. A vehicle presented for reinspection without
the documentation required in subsection
(LL)(1) of this section will be rejected from reinspection.
MM. Certificates for Enhanced Emissions Testing.
1. General Requirements. A certificate of compliance
may be issued by the Division.
2. A vehicle inspected at an enhanced I/M program
station and found to meet or exceed the
requirements of this chapter shall be issued a vehicle inspection report (VIR) which contains the
following information:
a. The enhanced I/M program station number, test
lane number, and inspector identification
number;
b. The date of inspection;
c. The exhaust emissions test start time and
the time final exhaust emissions scores are
determined;
d. The vehicle identification number (VIN);
e. The license plate number, if applicable;
f. The gross vehicle weight rating, for a vehicle
other than a passenger vehicle;
g. The vehicle model year and vehicle make;
h. Indication that the vehicle has full-time
four wheel drive, if applicable:
i. The odometer reading;
j. The category of inspection performed (initial
inspection, first reinspection, or subsequent
reinspection);
k. Indication if a second-chance emissions test
was performed, as provided in subsection
(K)(5) of this section, if applicable;
l. The fuel type of the vehicle;
m. The overall pass/fail status for the inspection;
n. The exhaust emissions test pass/fail status
for hydrocarbons, carbon monoxide, oxides of
nitrogen, and carbon monoxide plus carbon dioxide;
o. The exhaust emissions measurements and the
applicable standards for hydrocarbons,
carbon monoxide, oxides of nitrogen, and carbon monoxide plus carbon dioxide, carried out to
the appropriate number of significant digits as specified in Section 10.12.260.
p. The pass/fail status for the on board diagnostics
interrogation and the applicable standard
if applicable;
q. The valid through date; and
r. Any other information the Division may specify.
3. A vehicle owner shall ensure that the most
recent inspection form copy is carried in the
vehicle for which it was issued at all times.
4. Certificate of compliance. If a vehicle inspected
at a vehicle emissions enhanced I/M
program station meets all applicable standards of this chapter and the applicable standards
specified in Section 10.12.260 during an inspection, the vehicle is considered to be in compliance
for the assigned inspection cycle, and the Division will issue a certificate of compliance if the
vehicle is to be registered at a location other than the enhanced I/M program station, which
includes a statement certifying that the inspection was performed in accordance with the
provisions of this chapter. If the vehicle is registered at the enhanced I/M program station, the
statement shall be included on the VIR.
a. If a vehicle passes a reinspection, the change
in:
i. Fuel economy resulting from emissions related
repairs; and
ii. Exhaust emissions, in pounds of pollutant
per ten thousand (10,000) miles of vehicle
operation, resulting from emissions related repairs will be included on the VIR.
5. Notice of Failing Vehicle.
a. If a vehicle inspected at a enhanced I/M program
station does not meet all applicable
standards specified in this chapter during an inspection, the vehicle is considered not to be in
compliance and the Division shall issue a notice of a failing vehicle which includes the following
information:
i. The type of failure and possible reasons for
failure; and
ii. A statement indicating any availability of
warranty coverage as provided by the Clean Air
Act, 42 USC Section 7541.
b. If a vehicle fails the emissions test, and
is within the time and mileage requirements of the
federal emissions warranty contained in the Federal Clean Air Act, the inspector should inform
the owner/operator that he/she may qualify for warranty coverage of emission related repairs as
provided by the vehicle manufacturer and mandated by the Federal Environmental Protection
Agency. The inspector may provide the owner with a copy or copies of the applicable emissions
warranty pamphlets approved by the Division. The Division will display informational pamphlets
in an area readily accessible to the public in the enhanced I/M program station.
c. A vehicle that fails a Division operated test
shall not use a certificate of compliance or
waiver from and enhanced basic I/M program station or any other I/M Program to register the
vehicle.
6. Certificate of Waiver.
a. A certificate of waiver may be issued to a
1981 or newer vehicle which continues to
exceed the emissions cut points for the enhanced I/M inspection, if all of the following
requirements are met:
i. All applicable warranty coverage has been
used, or the vehicle manufacturer or a dealer
has issued written denial of the warranty coverage provided for vehicles by the Clean Air Act, 42
USC Section 7541;
ii. At least four hundred fifty dollars ($450.00)
or an additional amount as specified in
Section 10.12.250 that is necessary to meet the waiver Rate requirement of the applicable State
Implementation Plan has been spent on acceptable emissions related repair costs performed by a
certified emissions repair technician (certified under Section 10.12.170) for that specific vehicle,
and if proof of repair costs for that specific vehicle have been provided to the Division in the
form of an itemized bill, invoice, work order, manifest or statement in which emissions related
parts are specifically identified.
iii. The vehicle has failed a reinspection;
iv. Air pollution control devices applicable
and specified in Section 10.12.100(J) of this
chapter are in place and operable on the vehicle. If the devices have been removed or rendered
inoperable, they shall be replaced or repaired before a waiver is granted; and
v. A waiver has not been issued for the vehicle
in the previous year.
vi. The owner exhibits satisfactory evidence,
including repair receipts, to the Division that
the minimum amount required by subsection (MM)(6)(a)(ii) of this section has actually been
expended for emissions related repairs within the ninety (90) days following the initial inspection
failure.
b. The vehicle owner shall submit proof of expenditures
for repairs as specified in subsection
(MM)(6)(a) of this section with the waiver application in a form and content acceptable to the
Division. Repair costs, including parts and labor, shall be limited to only those repairs necessary
to bring the vehicle into compliance with applicable emissions standards and may not include:
i. Costs determined to be necessary to correct
tampering with or the removal of an emissions
control device, or to repair damage resulting from misfueling; or
ii. Costs associated with the repair or replacement
of the exhaust system or any of its
components.
iii. Costs associated with the emissions test
or any costs due to lost time, travel or
inconvenience.
iv. Costs of labor performed in other than a
certified emissions repair facility by or under the
supervision of a certified emissions repair technician.
c. The Division shall evaluate each waiver application,
examine the vehicle for verification
of repairs and the presence of required emissions control devices, and may issue a certificate of
waiver if the owner has acted in good faith to bring the vehicle into compliance and has in fact
complied with the provisions of this chapter.
d. The Division may grant a time extension to
a waiver applicant so that additional repairs
may be obtained or to adequately evaluate and verify the contents of the waiver application.
e. A certificate of waiver may be issued only
by the Division.
f. The Division may grant a time extension for
a vehicle registered in the County but
operated in or assigned to an area outside of the County. The vehicle owner shall present the
vehicle for inspection upon its return to the County.
g. The Division may enter into an agreement with
the Utah Auto Dealers Association to
facilitate testing and registration of vehicles recently purchased by Davis County residents from
automobile dealerships outside of Davis County. (Ord. 7-1996 § 1 (part))
A. Permit Required.
1. No person shall perform any part
of the official emissions inspection for the issuance of a
certificate of compliance unless the person possesses a valid certified emissions tester or certified
emission repair technician permit issued by the Division.
2. Applications for a certified emissions
tester or certified emission repair technician permit
shall be made upon a form to be prescribed by the Division. No permit shall be issued unless the
applicant has shown adequate competence by successfully completing the written and practical
portions of the permit requirements as specified in this
chapter Ordinance.
3. An applicant shall comply with
all of the terms stated in the permit application and with
all the requirements of this
chapter Ordinance.
4. An applicant shall complete a Division
approved training course and shall demonstrate
knowledge and skill concerning the performance of emissions inspections and adjustment of
vehicles to manufacturer’ s specifications. Such knowledge and skill shall be shown by passing:
a. A written qualification test including
knowledge of the following:
i. Operation and purposes of emission
control systems;
ii. Relationship of HC, NO
x and CO to timing and carburetor adjustment;
iii. Adjustment to manufacturer’
s and high altitude specifications;
iv. Inspection procedures as outlined
in this
chapter Ordinance;
v. Operation of an exhaust gas analyzer
including the performance of a gas calibration and
leak check;
vi. The provisions of Section 207(b)
warranty provisions of the Federal Clean Air Act; and
vii. Knowledge of the function of
onboard diagnostics, pressure tests and NO
x emission
control equipment functional tests.
viii. The provisions of this
chapter Ordinance and other Division policies and procedures.
b. A performance qualification test
including the following:
i. Visual inspection and knowledge
of the function of the required emission control
equipment;
ii. Demonstration of skill in the
proper use, care, maintenance, and calibration and leak
checking of approved analyzers;
iii. Demonstration of ability to conduct
the emissions inspection including a pressure test
and/or NO
x emissions control equipment functional test if required by the Division;
iv. Demonstration of ability to adjust
the engine system to manufacturer’ s and high altitude
specifications; and
v. Demonstration of ability to accurately
and legibly complete the inspection forms.
5. A signed hands-on performance check
sheet shall be necessary for successful completion
of the performance qualification test. The hands-on performance check sheet shall be signed by
an instructor or other person approved by the Division.
6. The Division may issue the applicable
permit to an applicant upon the applicant's
demonstration that he/she has successfully completed the applicable requirements of Section
10.12.170
of this Ordinance.
7. The permit shall be valid only
at the enhanced basic I/M program station or certified
emission repair facility where the certified emissions tester or certified emission repair
technician is presently employed. If the permittee is later employed at another enhanced basic
I/M program station or certified emission repair facility, he/she shall notify the Division of the
employment change. He/she shall also be required to be permitted there prior to performing any
emissions tests. A separate permit number may be issued for use at the additional enhanced basic
I/M program station as determined by the Division. Also, an additional permit fee may be
charged. That permit will expire on the same date as the original.
B. Requalification requirements for
all certified emissions testers and certified emission
repair technicians.
1. Upon determination, by the Director,
of the necessity of updating the qualifications for
certified emissions testers and certified emission repair technicians, they shall be required to
requalify.
2. Certified emissions testers and
certified emission repair technicians shall requalify
annually. Failure to requalify within the required period of time shall result in suspension or
revocation of the permit as described in this
chapter Ordinance.
C. Permit Expiration.
1. All permits shall be issued annually
and shall expire
one year from the date of issuance
December 31st of the current year. A permit shall be renewable sixty (60) days
prior to the date
of its expiration.
2. It is the responsibility of the
permittee to pursue the renewal of the permit.
(Ord. 7-1996 §
1 (part))