PROTECTION AGENCY
OFFICE OF ENFORCEMENT
-SO-008
.AEGA-1 LIDAR: DATA ANALYSIS REPORT
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL GENERATING STATION
Gary, Indiana
^80
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
Denver, Colorado
c/EPA
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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF ENFORCEMENT
EPA-330/1-80-008
OMEGA-1 LIDAR: DATA ANALYSIS REPORT
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL GENERATING STATION
Gary, Indiana
October 1980
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
Denver, Colorado
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CONTENTS
I. INTRODUCTION
II. SUMMARY AND CONCLUSIONS
III. METHODS
IV. DATA ANALYSIS PRESENTATION
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I. INTRODUCTION
The National Enforcement Investigations Center (NEIC) conducted an
investigation of visible emissions from two stationary sources at the Mit-
chell Generating Station operated by the Northern Indiana, Public Service
Company (NIPSCO), in Gary, Indiana, during the morning and late afternoon
hours of June 5, 1980. Opacities of observed visible emissions were meas-
*
ured remotely with a new instrumentation method using the NEIC Omega-1
Lidar. Figure 1 depicts the location of the Lidar during the observation.
The Mitchell Station contains four coal-fired boilers equipped with
electrostatic precipitators. Boilers 4, 5, and 6, firing low sulfur coal,
are equipped with flue gas conditioning systems for improving precipitator
performance, and Boiler 11, firing high sulfur coal, is equipped with an
flue gas desulfurization system for S02 control. Units 4, 5, and 6 have a
generating capacity of 131 megawatts each, while Unit 11 has a capacity of
110 megawatts. The emissions from Boilers 4 and 5 are discharged through
Stack I, Boiler 6 through Stack II, and Boiler 11 through Stack III (not
evaluated). Stacks I and II each have a height of 236 feet. Visible emis-
sions from these stacks are alleged to be in violation of the applicable
opacity limits of the Indiana State Implementation Plan (SIP).
On April 21, 1980, the Enforcement Division of EPA, Region V, Chicago,
Illinois, requested assistance from NEIC in documenting the opacity of
emissions from the Mitchell Station during both early morning and late af-
ternoon time periods.
* This method has been proposed in the Federal Register, Vol. 45, No.
128, Tuesday, July 1, 1980, pages 44329 through 44351, as an alternate
method to Reference Method 9.
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28
23
Light
5s.
29
1000
1000
2000
3000
4000
5000
6000
7000 FEET
0
1 KILOMETER
Figure 1. Location Map
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II. SUMMARY AND CONCLUSIONS
SUMMARY OF THE INVESTIGATION
The opacity of visible emissions from the two stationary sources with-
in the Mitchell Generating Station, Northern Indiana Public Service Company
(NIPSCO), Gary, Indiana, were measured during early morning and late after-
noon hours on June 5, 1980. The sources investigated were Stacks I and II.
All measurements were conducted remotely from off the plant site.
Opacities were measured remotely with the NEIC Omega-1 Lidar which is
a new instrumentation method. This method has been proposed in the Federal
Register as Alternate Method 1 to Reference Method 9.
Eight sets of opacity measurements were made, the total of which was
about 2.25 hours of observation and about 830 individual measurements. The
sets of measurements ranged in length from 15 to 30 minutes. Measurements
were made at a temporal frequency range from once about every 9 to 11 sec-
onds.
All opacity measurements were subsequently analyzed and reduced with
the NEIC laboratory computer using the methods given in Alternate Method 1
(proposed).
The results of the lidar observations are summarized in Table 1 ac-
cording to the official designation of each stationary source.
CONCLUSIONS
The visible emissions from Stack I exceeded the maximum allowable lim-
it of the Indiana State Implementation Plan (40% for a 6-minute average)
during the fifth run [Table 1]. The opacity of the emissions exceeded the
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Table 1
NIPSCO, MITCHELL GENERATING STATION
Gary, Indiana
Source
Designation
Stack 11
Stack I
Stack I
Stack I
Stack I
Stack I
Stack I
Stack II
Applicable
Opacity
Limit (%)
40'
40
40
40
40
40
40
40
Date
June 1980
5
5
5
5
5
5
5
5
Time Interval Approx. length of
(hr:min: sec) Observation (rain)
7:28:50
7:43:39
8:02-00
8:16:49
8:20-59
8:35:59
8-56-08
9-11:09
9.16-48
9.31:49
9.33:48
9.48 21
15-58:05
16-12:38
16:18:09
16:48:38
15
15
15
15
15
15
15
30
Approx. Time
Exceeding
Limit (mm)
0
0
0
0
13
0
0
0
% of Time
in Excess
of limit
0
0
0
0
87
0
0
0
± Max. Lidar Calibration
Peak Opacity Error Mag. (%)
(6-min avg.) [From 0% to 80%]
13
31
31
26
48
35
36
17
-0.2,
-0.9,
-0.9,
-0.9,
-0 9,
-0.9,
-0.6,
-0.6,
+0.3
+0.2
+0.2
+0.2
+0.2
+0.2
+0.2
+0.2
-------
To provide the requested assistance to Region V, NEIC conducted the
investigation with the following objectives:
I. Document the opacity of visible emissions from Stacks I and
II.
2. Evaluate the compliance of the observed emissions with the
Indiana SIP.
3. Evaluate if emissions from the Mitchell Station were greater in
early morning hours than during the late afternoon period.
-------
limit for 13 minutes or 87% of the observation time. The data showed that
the early morning emissions were somewhat greater than those of late after-
noon during only the above mentioned run.
The emissions from Stack II were observed through two observation per-
iods, one 15 minutes and the other 30 minutes in length. The emissions did
not exceed the SIP opacity limit (40% for a 6-minute average) during these
times. The opacity values during the early morning and late afternoon
hours were nearly equal.
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III. METHODS
LIDAR OPACITY MEASUREMENTS
Alternate Method 1 (proposed) employs a lidar (lasar radar) which is
an optical system installed in a truck-mounted van enclosure. This mobile
lidar is specifically designed and fabricated for measuring the opacity of
visible emissions from a given stationary source during both day and night-
time ambient lighting conditions. The laser transmitter within the lidar
emits a short pulse of light. The lidar receiver collects the laser light
backscattered from the atmospheric aerosols before and beyond the visible
plume as well as that from the aerosols (particulates) within the plume.
The lidar receiver converts the backscattered optical signals to electronic
signals or data. The Lidar has an inherent data processing capability that
calculates the opacity values from the backscatter data from just before
and beyond the plume. It subsequently records these opacity values in hard
copy form, and also records the original lidar receiver data (signal ampli-
tude vs range) on magnetic tape for future reference or use.
The nominal data gathering rate of the lidar is an opacity measurement
or determination once every 10 seconds. This data rate can be maintained
in continuous operation for minutes or even hours. The lidar method is
intended for use during nighttime, as well as during the day.
The Omega-1 Lidar is internally calibrated in the field periodically
over the opacity values of 0, 10, 20, 40, 60, and 80%.
DATA ANALYSIS AND REDUCTION
The lidar data were analyzed in accordance with Section 2 of Alternate
Method 1 (proposed) using the NEIC PDP-11-70 laboratory computer. The
-------
individual opacity values were calculated using the backscatter data re-
corded on magnetic tape, with the opacity equation given in Section 2.4.1.
The associated statistics which includes the standard deviation, S , of
each individual opacity value, were calculated using the appropriate equa-
tions in Section 2.4.1. The running- or sliding-average, Op, of the indi-
vidual opacity values was calculated over the 6-minute averaging interval,
given in the Indiana State Implementation Plan (SIP), according to the re-
quirements of Section 2.4.2.
The number of opacity values included in the running-average is nomi-
nally 36 (six measurements/minute for 6 minutes according to the SIP). The
6-minute interval remains constant although the number of opacity values
may vary above or below the nominal. In accordance with the Opacity Data
Acceptance/Rejection Criterion in Section 2.4.3, if the standard deviation,
S , for a given opacity value is greater than 8% (full scale) then that
value is discarded from the running-average set decreasing the total number
by one. The number of opacity values in the 6-minute interval may be
greater than 36 which is caused by the lidar data rate being set faster
than six opacity measurements/minute (one opacity measurement every 10 sec-
onds).
DATA PRESENTATION
The opacity values are presented in two separate formats in Section IV
of this data analysis report. For each data run the values are given in
tabular form followed by graphic plots. An identification header is locat-
ed across the top of the tabular form which provides the following informa-
tion:
EPA-NEIC identification block.
EPA-NEIC Omega control number (evidentiary parameter).
Official designation for the stationary source.
Facility name.
Facility location.
Location of the lidar during tests.
Length of the running average interval.
-------
This tabular presentation provides the applicable data in columns identified
as follows:
Date of data run.
Time of the opacity measurement (nearest second).
Opacity values as calculated in %.
Standard deviation SO (S in Alternate Method 1) in %.
Individual violation flags, not applicable in Indiana.
Average opacity (%) calculated over the running-average interval.
Average standard deviation (%) calculated over the running-aver-
age interval.
Average opacity violation flag, applicable in Indiana.
Number of opacity values discarded due to the Opacity Data
Acceptance/Rejection Criterion (§ 2.4.3 of the Alternate
Method 1).
In the average opacity violation column, any violations that occurred over
and above the 40% (SIP) average opacity limit are indicated with a flag of
four asterisks.
Referring to the first sheet of the tabular data output, Section IV,
for the fifth data run, (Omega-0049), the average opacity violation flag
(column 8 in the tabular format) does not show up until 6 minutes of data
has been averaged. If the average opacity is greater than 40% then the
first violation flag occurs at the end of the first 6-minute interval and
continues until the average opacity drops below the regulation limit or the
data run is completed. This data run began at 9:16:48 and the individual
opacity values were all above 40% (column 3). The average opacity (column
6) reads zero until 6 minutes of data has been recorded. At the end of the
first 6-minute interval (9:16:48 to 9:22:32) the average opacity was calcu-
lated to be 47% and the first average opacity violation flag is indicated.
The running-average permits one to easily locate the 6-minute inter-
val(s) which has the highest average opacity. In the example of the fifth
-------
data run (Omega-0049), the highest average occurred for the 6-minute inter-
val ending at 9:23:26 (sheet one). However, the first violation occurred
for the 6-minute time interval ending at 9:22:32. The next violation does
not occur until 6 minutes after 9:22:32 or 9:28:34 which had an average
opacity of
The computer graphical plots, located in Section IV immediately after
each respective tabular data set, show the individual opacity values (col-
umn 3 of the tabular data set) along with their respective standard devia-
tions as error bars (column 4 of the tabular data set). The standard devi-
ation gives an indication of the magnitude of the error associated with
each opacity value due to atmospheric noise along the lidar line-of-sight.
The magnitude of the average opacity established in the SIP is indicated on
each plot by the dashed line at the 40% value. Each graphical plot is
fixed in time along the horizontal axis, being 10 minutes in length.
The lidar internal calibration data are presented in Table 1 of Sec-
tion II for each respective observation period as the extreme values that
occurred throughout the opacity range given above. A negative value indi-
cates that the lidar was determining opacity low or below the respective
standard while a positive value indicates a high value with respect to the
standard.
-------
IV. DATA ANALYSIS PRESENTATION
-------
OMEGA-0048
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL STATION
Stack II
June 5, 1980, 7:28:50 to 7:43:39
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0048, STACK 2,
DATE
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5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
NIPSCO 1
TIME OPACITY
7
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33
33
33
33
33
34
34
34
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34
35
35
35
35
35
35-
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36
36
36
36
36:
37:
37:
50
0
10
21
31
41
52
2
22
32
43
53
3
13
23
32
42
51
1
10
19
30
40
51
1
12
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9
19
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9
16
9
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19
16
19
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7
11
11
14
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7
14
16
14
14
0
17
12
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14
12
7
10
16
1
14
11
14
8
17
4
21
15
28
14
8
15
12
12
5
MITCF
SO
1
1
2
2
1
2
2
1
2
1
1
1
1
1
2
2
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1
1
2
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1
1
1
2
2
1
1
2
2
1
2
2
2
1
1
2
2
2
1
1
ELL STATION, GARY, IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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12
12
12
12
12
12
11
12
12
12
12
12
12
12
12
12
0
O
0
0
O
O
O
O
0
O
0
0
O
0
O
0
0
O
O
O
O
0
O
0
O
O
O
0
0
O
O
O
0
1
1
1
1
2
2
2
2
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0
0
0
0
0
34
35
36
36
36
36
36
36
36
36
36
37
37
37
37
37
37
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-004B, STACK 2. NIPSCO MITCHELL STATION. GARY. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
DATE TIME OPACITY SO VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
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6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
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6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/dO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
7 37 20
7 37 30
7 37 41
7 37 51
7 38 1
7 38 10
7 38 20
7- 38 29
7 38.39
7 38 48
7 38. 58
7 39. 7
7 39- 17
7 39.27
7 39.38
7 39-48
7 39- 58
7 40- 8
7 40" 19
7-40 29
7 40 39
7 40:49
7 41. 0
7 41 10
7.41.20
7:41 30
7:41.40
7-41 50
7-42: 0
7 42 9
7 42. 19
7 42 29
7.42 39
7-42.49
7 42- 59
7 43 9
7 43 19
7.43 29
7-43 39
18
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18
15
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2
2
2
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2
2
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0 OF
0 OF
0 OF
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37
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36
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37
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36
36
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37
-------
oz
Q_
CD
100
90
80
70
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1
50
40
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_____ _ . ._
25
CRLCULRTED OPRCITY PLUS OR
MINUS ONE STflNDflRD DEVIRTION
RVERRSE OPflCITY STRNDRRD
£
1 i i
7:27
7:29 7:31
CENTRRL TIME
7:33
7:35
STflCK 2. NIPSCO MITCHELL STRTION, GRRY, INDIRNR
-------
DflTE: 6/ 5/80
CRLCULRTED OPRCITY PLUS OR
MINUS ONE STflNDRRD OEVIRTION
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CENTRRL TIME
7:43
7:45
5TRCK 2, NIPSCQ MITCHELL 5TRTION, GRRY, 1ND1RNR
-------
OMEGA-0049
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL STATION
Stack I
June 5, 1980, 8:02:00 to 8:16:49
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMECA-0049. STACK 1,
DATE
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TIME
8
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B
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9
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9
10
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NIPSCO
OPACITY
0
10
20
30
40
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0
10
20
30
39
49
59
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38
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7
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9
19
29
39
49
59
9
19
30
40
51
1
12
22
32
43
S3
4
14
24
0
20
2
20
30
19
9
18
12
19
21
36
42
48
25
27
27
14
24
13
16
20
26
12
16
84
27
58
34
20
12
23
28
21
IB
23
25
32
32
8
24
34
16
49
64
64
80
24
27
11 TCh
SO
4
2
2
1
2
2
2
2
1
2
2
1
4
3
1
2
2
0
2
1
1
1
2
1
1
2
1
1
1
1
1
2
2
1
1
2
2
1
1
2
1
ELL STATION. GARY. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
0
0
0
o
o
0
0
0
o
0
0
0
o
0
0
0
0
o
0
0
0
0
o
0
0
0
0
o
0
0
0
0
0
0
0
24
24
24
25
25
25
25
26
26
27
28
30
31
31
30
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
O
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
2
2
2
2
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0 OF
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0
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0
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0
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0
0
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0
0
0
0
0
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0
0
0
0
0
0
0
0
0
0
0
0
o
36
37
37
37
37
37
36
36
36
36
36
36
36
36
36
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO B0225
OMEGA-0049, STACK 1, NIPSCO MITCHELL STATION, GARY, IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
DATE TIME OPACITY SO VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/8O
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/8O
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80 -
6/ 5/80
B 10 24
B 10 35
B 10 45
B 10 56
B 11 6
B 11 15
8 1 1 . 24
8 11 33
8 11 42
B 11 51
8 12 0
8 12 10
8 12 19
8 12 29
8 12 39
B. 12 49
8 12 59
8 13 B
8 13 IB
8 13 28
8 13:38
8 13 48
8 13 58
8 14 9
8 14- 19
8 14 29
8 14-39
8 14.49
8 14. 59
8 15 9
8 15 19
8 15 29
8 15 39
8. 15 49
8 15 59
8 16 9
8 16. 19
8 16 29
8 16 39
8 16 49
26
25
19
27
2O
26
18
5
17
14
30
23
24
15
8
7
5
5
24
12
11
2
17
9
7
11
20
17
13
7
25
5
14
6
15
10
4
0
30
33
1
1
1
1
1
2
2
2
2
1
1
1
2
1
2
2
2
2
2
1
2
1
2
1
1
2
1
2
1
2
1
2
2
1
1
1
1
2
2
1
30
30
30
30
30
30
30
30
30
29
30
30
28
28
27
26
25
25
25
25
24
24
24
23
23
22
22
22
22
21
22
20
19
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16
15
15
14
14
15
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
0 OF
0 OF
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36
36
36
36
36
36
36
36
36
36
36
36
36
36
36
36
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
-------
C_J
en
Q_
CD
100
98
80
78
60
5B1
40
3d
20
10
0
I CHLCULRTED OPRCITY PLUS OR
DRTE: 6/ 5/80 1 MINUS ONE STRNDRRD DEVIflTION
RVERRGE OPRCITY STRNDRRD
-I 1 1 1 1 1 T
T 1 T
T 1 1 1 1 1 T
J *
T
I I I1
i
s
s1 i
-10
8:
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8: 2
8: 4 8: 6
CENTRRL TIME
S: 8
8: Iffl
STRCK 1. NIPSCO MITCHELL STRTION, GRRY, INDIRNR
-------
LJ
cn
Q_
o
100
90
80
70
• 60
50
40
30
20
10
DRTE: e/ s/ea
-1©
8: 10
CRLCULRTED OPRCITY PLUS OR
MINUS ONE STRNDRRD DEVIRTION
RVERRSE OPRCITY STRNDRRD
ll
!i »
i
8: 12
8: 14
8: 16
8: IS
8:20
CENTRflL TIME
STRCK 1, NIPSCO MITCHELL STflTION, GflRY, INDIRNn
-------
OMEGA-0049
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL STATION
Stack I
June 5, 1980, 8:20:59 to 8:35:59
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0049, STACK 1. NIPSCO
DATE TIME OPACITY
STATION, GARY. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
SO VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
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6/
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6/
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6/
bf
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/8O
5/80
5/80
5/80
5/80
5/80
5/80
5/8O
5/8O
5/8O
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/8O
5/80
5/80
5/80
8
B
B
B
8
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8
8
8
8
8.
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8
8
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8
8
8
8
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8
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8
8
8
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8
8
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8
8
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8
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8
8
8
8
8
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8
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21
21
21
21
22
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22
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23
23.
23
23
23
23
24
24
24
24
24.
25
25
25
25
25
25
26
26
26
26
26-
26
26
27
27
28
28
28-
28
28
29-
29-
29
29-
29
30
30.
59
9
18
28
37
47
56
6
16
26
36
55
5
15
26
36
47
53
9
20
30
41
52
2
12
22
31
41
51
0
10
20
30
40
49
59
29
48
B
29
39
49
59
9
19
29
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0
10
29
25
27
24
19
16
22
16
22
31
33
34
36
28
34
27
35
28
38
23
31
35
20
31
34
39
35
38
27
26
29
28
37
17
13
24
32
38
14
33
30
24
28
32
36
40
21
41
23
25
1
1
1
2
1
2
1
1
1
1
1
1
2
1
2
1
1
1
1
2
1
1
1
1
2
1
2
2
2
1
1
1
2
1
2
3
1
5
1
3
4
2
2
2
3
1
2
1
1
1
O
O
O
O
O
0
0
0
0
0
0
0
0
O
0
0
0
O
0
0
0
0
O
O
0
O
0
0
0
0
0
0
0
29
28
28
28
29
30
30
30
30
29
29
30
30
30
30
30
29
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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0
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0
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0
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2
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2
2
2
2
2
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2
2
2
0 OF
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0
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0
0
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0
0
0
0
0
0
0
0
0
0
0
0
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O
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0
0
0
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0
0
0
0
34
35
36
33
32
31
30
30
31
31
31
31
31
31
31
31
31
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0049, STACK 1.
DATE
bf
bf
bf
bf
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5/80
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5/80
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5/80
5/80
5/80
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5/8O
5/80
5/80
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NIPSCO 1
TIME OPACITY
8
8
8
8
8
8
8
B
8
8
B-
8
8
8
8
B
8
8
8
8
8
8
8
8
8
8
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8
8
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30
30
30
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31
31
31
31
31
32:
33
32
32.
32.
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33
33
33
33
33
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34
34
34
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51
12
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41
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0
10
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9
19
29
38
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58
8
18
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59
41
28
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51
30
41
29
29
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32
32
31
23
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11
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23
35
29
27
35
44
30
33
34
23
MI TO
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2
1
1
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2
2
1
1
1
1
1
1
1
1
1
1
1
ELL STATION. GARY. IN. FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
30
30
30
30
31
31
31
31
30
30
30
30
30
30
31
0
31
30
30
30
29
29
0
29
29
29
29
29
29
29
29
29
29
29
2
2
2
2
2
2
2
2
2
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2
2
2
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2
2
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2
2
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2
2
2
2
2
2
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1
1
1
1
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32
32
32
32
31
31
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31
31
30
30
30
30
31
30
0
31
32
32
33
33
34
0
35
36
36
36
36
36
36
36
36
36
36
-------
CJ
0=
Q_
CD
100
90
80
70
' 60
50
40
30
20
10
DRTE: 6/ s/eo
I CRLCULRTED OPHCITY PLUS OR
I MINUS ONE STRNDRRD DEVIR1ION
RVERRGE OPRCITY STRNDRRD
•10
3:20
f
6:22
8:24 8:26
CENTRRL TIME
8:28
8:30
STRCK \. NIPSCQ MITCHELL STRTION, GRRY, IND1RNR
-------
II
DRTE: 6/ 5/80
CHLCULRTED OPRCITY PLUS OR
MINUS ONE STRNDRRD DEVIRTION
RVERRGE OPRCITY STRNDRRD
CJ
OZ
O_
90
80
70
60
50
40
. 30
20:
10
0
-10
8
I I
I I
39
8:32
8:34 8:36
CENTRflL TIME
8:38
STRCK 1. NIPSCO MITCHELL STRTION, GRRY, IND3RNR
-------
OMEGA-0049
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL STATION
Stack I
June 5, 1980, 8:56:08 to 9:11:09
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCV
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER, COLORADO 80225
OMEGA-0049. STACK I, NIPSCO MITCHELL STATION, GARY. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
DATE TIME OPACITY SO VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/BO
6/ 5/BO
6/ 5/BO
6/ 5/BO
6/ 5/BO
6/ 5/80
6/ 5/BO
6/ 5/BO
6/ 5/60
6/ 5/BO
6/ 5/80
6/ 5/BO
6/ 5/BO
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/8O
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/SO
6/ 5/80
6/ 5/8O
6/ 5/8O
6/ 5/80
6/ 5/8O
6/ 5/8O
6/ 5/8O
&/ 5/80
6/ 5/80
i/ 5/8O
6/ 5/8O
67 5/8O
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
8 56 8
8 56 23
8 56 33
8 56 43
8 56 53
8 57 3
8 57 13
B 57 23
8 57:33
8 57.43
B 57 52
B 58. 1
B 58 10
8 58 19
B 58 28
8 58 38
8 58 47
8 58 56
B 59. 5
8 59. 14
8 59-23
8- 59-32
8- 59.42
8 59 51
9. 0 0
9 0- 10
9 0 20
9 0 29
9- 0 39
9- 0 49
9. 0 58
9 1:8
9 1. 18
9 1.28
9 , 1 38
9 1. 48
9 1-58
9 2: 8
9- 2 18
9- 2.28
9 2 38
9 2 48
9 2- 58
9 3. 8
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9 3 29
9 3 39
9 3 49
9 3 59
9 4: 8
80
44
32
31
38
31
37
33
23
31
28
30
22
29
26
23
33
24
6
27
27
25
17
23
20
18
11
20
35
27
32
25
19
15
7
9
14
13
10
21
17
33
11
10
15
23
37
19
13
8
2
1
1
1
2
1
1
1
2
1
1
1
1
2
2
2
1
1
1
2
2
2
2
1
1
1
2
1
2
2
1
2
2
2
2
2
3
2
2
3
2
1
1
3
2
2
1
1
2
2
0
O
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0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
O
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0
O
0
0
0
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0
0
0
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0
26
26
24
24
23
23
22
22
21
21
21
21
21
20
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0
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0
0
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0
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2
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2
2
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0
0
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0
0
0
0
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0
0
O
0
O
O
0
0
37
38
38
38
38
38
38
38
38
38
38
38
38
38
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-O049. STACK 1.
DATE
6/
6/
6/
6/
6/
6/
6/
6/
&/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6/
6X
6/
6/
6/
6/
6/
6/
6/
6/
6/
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/BO
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/BO
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/BO
5/80
5/80
TIME
9
9
9
9
9
9
9-
9-
9
9
9
9-
9
9
9
9
9
9
9
9
9
9
9.
9
9.
9
9-
9.
9
9
9
9
9
9
9-
9
9
9.
9
9
4
4
4
4
4
5
5
5
6
6.
6-
6
6:
6
7
7
7
7-
7
7
B
Q.
8-
8.
8
8
9
9
9
9
9
9
10
10
10
10.
10
10-
10.
11
NIPSCO 1
OPACITY
18
29
39
49
59
10
20
50
0
10
20
30
40
50
0
10
20
30
40
50
0
10
20
30
40
50
0
10
20
30
40
50
0
10
19
29
39
49
59
9
13
9
14
39
2
12
17
5
17
12
16
23
23
19
36
44
32
23
34
22
31
30
29
25
23
17
18
24
21
14
23
23
20
18
23
17
30
18
32
17
niTCf^
SO
1
1
2
1
2
2
2
1
2
1
1
2
3
3
1
1
2
1
2
1
2
1
2
2
1
1
2
2
2
1
2
1
1
2
1
2
1
1
1
1
ELL STATION. GARY, IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
20
19
19
19
19
19
18
18
18
17
17
17
17
17
17
18
18
IB
19
19
20
20
21
21
21
21
21
21
21
21
21
21
21
21
22
22
22
22
22
23
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
0 OF
0 OF
0 OF
0 OF
0 OF'
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
O OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
38
37
37
37
37
37
37
35
35
35
35
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
35
35
35
35
35
-------
DflTE: 6/ 5/80
CRLCULRTED OPRCITY PLUS OR
MINUS ONE STRNDflRD DEVIfHION
RVERR6E OPflCITY STFIHDflRD
CJ
CD
90
819
78
60
SID
4®
30
20
-10
8:55
8:57
••s-1
ill
i *
8:59 9: 1
CENTRflL TIME
9: 3
9: 5
STflCK 1, NIPSCO MITCHELL STRT30N, GRRY, IND1RNR
-------
I CRLCULRTED OPRCITY PLUS OR
cn
o_
100
90
80
70
' 60
i
50
40
30
20
10
0
DOTE: 6/ 5/80 1 MINUS ONE STRNDRRD DEVIRTION
RVERRGE OPRCITY STRHDRRD
-II
9: 5
I.
J - 1 - 1 - 1 - 1 - 1 - 1
' ' '
J 1 1 1 1 1 L
9: 7
9: 9 9:11
CENTRflL TIME
9: 13
9: 15
STflCK 1, NIPSCQ MITCHELL 5TRTION, GRRY, IND1RNR
-------
OMEGA-0049
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL STATION
Stack I
June 5, 1980, 9:16:48 to 9:31:49
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0049, STACK 1. NIPSCO MITCHELL STATION. GARY, IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
DATE TIME OPACITY SO VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 9/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
9 16.48
9 16 57
9 17 6
9 17 15
9. 17 24
9. 17-33
9. 17:42
9- 17 51
9 18 0
9- IB' 9
9 18 IB
9 IB 27
9 18.36
9 18.45
9- 18- 54
9 19 3
9 19. 12
9 19.32
9 19 31
9 19 40
9 19 49
9 19 58
9 20 7
9. 2O 16
9 3O. 25
9 20 34
9 20- 43
9.20 52
9 21 1
9 21 10
9 21 19
9 21.28
9 21:38
9 21 47
9 21. 56
9 22 5
9 22 14
9 22. 23
9 22 32
9:22 41
9 22 50
9- 22 59
9 23 8
9 23 17
9 23 26
9 23 35
9 23 44
9 23 54
9 24. 3
9 24 12
35
36
32
32
29
62
72
71
84
<80
44
36
54
65
55
49
32
46
31
36
36
32
44
32
52
54
44
47
47
40
48
52
56
58
56
51
37
41
34
47
46
30
44
35
42
33
38
18
23
31
1
1
1
1
3
1
1
1
O
0
2
2
1
1
1
1
1
1
1
2
2
1
2
2
1
1
1
2
1
2
1
1
1
1
1
1
2
2
1
2
1
2
2
1
1
2
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
47
47
47
47
48
48
48
47
46
45
44
42
0
0
0
0
0
0
0
O
0
0
0
0
0
0
0
0
0
0
0
O
0
0
0
0
0
0
0
0
O
0
0
0
0
0
0
0
0
0
*»*«
*»»»
»«*«
«•*»»
#»*»
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
O OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
O OF
O OF
0 OF
0 OF
0 OF
O OF
O OF
O OF
0 OF
0 OF
O OF
O OF
O OF
0 OF
0 OF
0
O
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
O
0
0
0
0
O
0
0
0
0
O
O
0
39
40
40
4O
40
40
40
4O
40
40
40
40
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0049, STACK 1,
DATE
bt
bt
bt
bf
bt
b/
b/
bf
b/
bf
b/
b/
b/
bl
b/
b/
b/
b/
bf
bf
bf
bt
bf
bf
bf
bt
bt
bl
bt
bf
bf
bt
bf
bf
bf
bf
bt
bf
bf
bf
bt
bf
bf
bf
bf
bt
bf
bf
bf
bt
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/8O
5/80
5/8O
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/8O
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
NIPSCO
TIME OPACITY
9
9
9
9
9-
9-
9-
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9.
9
9-
9
9
9-
9-
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
24
24
24
24-
24
25
25
25
25
25
26
26
26
26
26
26
26
27
27
27
27
27-
27-
27:
28
28
28
28.
28
28
29
29
29
29-
29
29
29
30
30
30
30
30
30
30:
31-
31:
31-
31:
31
31-
21
30
39
48
57
6
15
24
33
51
0
9
19
28
37
45
54
3
12
21
30
39
49
58
7
16
25
34
42
51
O
9
18
27
36
45
54
3
11
20
29
38
47
56
5
14
22
31
40
49
40
39
43
29
30
34
47
36
36
46
30
32
28
39
32
34
27
42
56
86
90
57
59
44
42
33
37
42
41
34
43
43
25
27
26
31
28
34
38
32
48
56
45
44
50
50
23
34
32
28
MITCf
SO
1
1
1
2
1
1
1
1
1
1
2
1
1
2
1
2
1
1
1
0
O
1
1
1
1
1
1
2
2
2
2
2
1
1
1
2
1
2
1
2
2
1
2
1
1
2
1
1
2
2
ILL STATION, GARY. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE 50 VIOLATION NUMBER DISCARDED
42
42
42
41
41
40
41
40
40
41
41
41
40
40
40
39
39
39
39
40
41
41
41
41
41
40
40
41
40
40
40
40
40
•40
40
39
39
39
40
40
40
40
40
41
41
42
41
41
41
41
***«
«•*#«•
«*««
«»**
»»»*
**»«
«*««
*#»«
»«»*
««««
»*#«
«*»*
*«««
**«»
»**»
«««*
**««
*»»«
***«
««*«
*»»«
*«»«
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
O OF
0 OF
0 OF
0 OF
O OF
O OF
0 OF
0 OF
4O
4O
40
40
40
40
40
40
40
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
39
40
40
40
4O
40
4O
40
40
4O
40
4O
4O
4O
41
-------
C_J
oz
Q_
CD
1130
90
60
7©
• 60
50
30
20
10
19
I CRLCULRTED OPRCITY PLUS OR
DRTE: 6/ 5/80 I MINUS ONE STRNDRRD DEVIRTION
RVERRGE OPRCITY STRNDRRD
-1®
S: 15
9: 17
i
:!*
9:19 9:21
CENTRflL TIME
9:23
9:25
STflCK 1, NIPSCO MITCHELL STnTION, GFIRY, INDinNR
-------
CJ
oz
Q_
CD
100
so
80
70
' 60
50
40
30
20
10
0
DflTE: 6/ 5/80
-10
9:25
CRLCULFITED OPRCITY PLUS OR
MINUS ONE STANDARD DEVIATION
RVEAAGE OPACITY STANDARD
x I
ll
9:27
9:29 9:31
CENTRRL TIME
9:33
9:35
STflCK 1, NIPSCQ MITCHELL STflTIQN, GRRY, 1NDIRNR
-------
OMEGA-0049
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL STATION
Stack I
June 5, 1980, 9:33:48 to 9:48:21
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMECA-0049.
DATE
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/60
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
STACK 1.
TIME
9 33 48
9 33 57
9 34 5
9 34 14
9 34 23
9 34-31
9 34-40
9 34-48
9 34. 57
9 35 6
9 35 15
9 35 23
9 35 32
9 35 41
9 35- SO
9 35-59
9 36 8
9 36 17
9 36 26
9 36 35
9 36 44
9 36 52
9 37 1
9 37 10
9 37 18
9 37:27
9 37 36
9 37 44
9 37:53
9 38 2
9 38 11
9 38 19
9 38 28
9 38 37
9 38 46
9 38 54
9.39 3
9 39 12
9 39.20
9-39 29
9 39 38
9 39 47
9 39 55
9 4O 4
9 40 13
9 40 21
9 40.30
9 40:39
9 40- 48
9 40. 57
NIPSCO r
OPACITY
17
22
19
25
28
31
35
39
24
33
40
47
32
46
49
28
37
36
34
43
48
71
56
33
35
43
37
42
46
31
33
26
28
37
40
28
31
30
29
23
28
25
24
28
26
17
19
23
25
36
1ITCK
SO
2
1
3
2
2
1
1
2
2
1
2
2
2
1
1
2
2
4
2
4
1
1
1
2
2
1
2
1
1
2
1
2
2
1
2
1
2
2
2
1
1
2
1
1
2
2
1
2
2
1
iLL STATION. GARY. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o
o
0
0
0
o
35
35
35
35
35
35
35
35
35
34
34
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o
2
2
2
2
2
2
2
2
2
2
2
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0
0
O
O
O
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o
0
0
0
0
0
0
0
0
o
0
0
0
0
0
0
0
0
0
0
40
41
42
42
42
42
42
42
42
42
43
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0049, STACK 1.
DATE
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
&/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/8O
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/8O
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
NIPSCO 1
TIME OPACITY
9 41 6
9-41 15
9.41 24
9 41 33
9 41 42
9 41 51
9 42 0
9.42 9
9 42 17
9 42 26
9 42 35
9 42 44
9 42 52
9 43 1
9 43 10
9 43 19
9 43 28
9 43 37
9 43 46
9 43 54
9 44 3
9 44 12
9 44 21
9 44 29
9 44 38
9 44 47
9.44 56
9 45 5
9 45 13
9 45 22
9 45-31
9 45 40
9. 45-49
9 45 58
9 46 7
9 46 16
9 46 25
9 46' 34
9 46 43
9 46 52
9-47 1
9.47 10
9 47' 19
9. 47 27
9- 47 36
9 47 45
9.47-54
9 48- 3
9- 48 12
9 48 21
31
39
31
34
26
26
30
24
24
23
26
27
42
72
40
32
36
41
36
86
33
41
35
35
40
39
28
16
35
34
39
38
30
34
43
28
35
33
31
29
30
16
12
30
28
27
38
34
24
35
MITCI-
50
2
1
1
2
2
2
1
1
2
1
2
2
1
1
1
1
1
1
1
0
1
2
1
1
2
1
1
1
1
1
1
1
2
1
1
2
1
1
1
2
1
2
1
2
2
2
2
1
2
2
^LL STATION. GARV. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
35
35
34
34
34
33
33
33
33
32
32
32
32
33
31
31
31
31
31
32
32
32
32
33
33
33
33
32
32
33
33
33
33
34
34
34
34
35
35
35
35
35
34
34
34
34
34
34
34
34
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
2
1
1
2
1
1
1
1
1
0 OF
0 OF
o or
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
42
42
41
41
41
41
41
41
42
42
42
42
42
42
42
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
-------
I CRLCULRTED OPRCITY PLUS OR
DRTE: e/ s/so I MINUS ONE STRNDRRD DEVIRTION
RVERRSE OPfiCIir STRNDRRD
o=
o_
CD
90
80
70
60
50
40
30
20
10
0
-10
9:30
1 I
9:32
9:34 9:36
CENTRflL TIME
9:38
9:413
STfiCK 1, NIPSCO MITCHELL STRT]ON, GRRY, 1NDIRNR
-------
CJ
oz
Q_
CD
1190
90
80
70
• 60
50
40
30
20
10
0
____
CRLCULRTED OPRCITY PLUS OR
MINUS ONE STRNDflRD OEVIRTION
RVERRGE OPRCITY STRNDflRD
-10
9:40
:I I1 . , »""« "
!i IJI*1
i !
i
I i
9:42
9:44 9:46
CENTRflL TIME
9:48
9:50
5TRCK 1, NIPSCQ MITCHELL STRTION, GRRY, INDIRNR
-------
OMEGA-0050
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL STATION
Stack I
June 5, 1980, 15:58:05 to 16:12:38
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0050. STACK 1, NIPSCO MITCHELL STATION, GARY. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
DATE TIME OPACITY SO VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
b/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
b/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/8O
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ S/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
15 58 5
15 58 13
15 58 22
15 58 31
15 58 40
15 58 49
15 58 58
15 59 7
15 59 15
15. 59.24
15 59 33
15 59 42
15 59 51
16 0 0
16 0 9
16 0 18
16. 0-27
16 0 36
16 0 45
16 0 54
16 3
16 : 11
16 20
16 29
16 38
16 .47
16 56
16 2 5
16 2. 14
16 2 22
16 2 31
16 2 40
16 2 49
16 2 58
16 3 7
16 3 16
16 3 25
16 3 34
16 3- 43
16. 3 51
16: 4. 0
16. 4 9
16 4 IB
16- 4 27
16- 4 36
16: 4 45
16. 4 54
16 5 3
16 5 11
16 5- 2O
36
26
32
28
27
27
3O
21
25
30
22
23
18
24
O
22
17
23
28
67
55
80
38
67
63
82
35
50
50
33
31
24
23
35
17
21
37
42
29
34
34
23
25
23
18
21
26
18
33
7
1
1
1
1
1
1
1
1
1
4
O
1
2
2
3
1
2
1
1
1
2
0
1
1
1
1
1
2
1
1
1
2
0
O
0
O
O
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
O
0
0
0
0
O
O
0
0
0
O
O
. 0
0
0
0
O
O
34
34
33
33
33
33
33
33
32
33
32
0
0
0
O
0
0
O
O
0
O
0
0
0
0
0
0
0
0
0
O
0
O
0
0
0
O
0
0
0
0
0
0
0
0
0
0
0
O
O
1
1
1
1
1
1
1
1
1
1
1
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
O
O
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
40
41
41
41
41
41
41
41
41
41
41
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OKEGA-0050, STACK. 1.
DATE
bf
bl
bt
bf
bt
bl
b/
bl
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bl
bf
b/
bf
bf
bf
bf
bf
bf
bf
bf
5/80
5/80
5/80
5/BO
5/80
5/80
5/80
5/80
5/eo
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/BO
5/BO
5/80
5/BO
3/80
5/BO
5/80
5/80
s/ao
5/80
5/80
5/BO
5/80
5/80
5/80
5/80
5/80
5/BO
5/BO
5/BO
5/BO
5/80
5/BO
5/BO
5/80
NIPSCO
TIME OPACITY
16
16
16
16
16
16
16
16
16
16-
16
16-
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16-
16
16
16
16
16
16
5.
5
5
5
6
6
6
6
6
6-
6
7
7
7.
7
7
7.
a-
8
8
8
8
B
8
9.
9
9
9
9
9
9
10
10
10
10-
10.
10.
10
11
11.
11.
11
11
11-
12
12
12
12
12
29
38
47
56
5
14
23
32
40
49
SB
7
16
25
34
43
52
1
10
19
28
37
45
54
3
12
21
30
39
49
57
6
15
24
33
42
51
59
B
17
26
35
44
53
2
11
20
29
38
39
21
16
36
26
38
36
38
24
31
38
44
39
26
36
38
27
27
37
45
47
28
40
27
26
23
24
25
34
34
22
41
65
56
38
29
30
33
64
46
36
31
31
23
35
30
35
44
84
MI TO
SO
1
1
3
1
2
1
1
2
1
1
1
I
1
1
1
1
1
1
1
2
1
1
O
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
0
ELL STATION. GARY. IN FROM SOUTHWEST OF PLANT BIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
32
32
32
33
33
34
35
35
35
35
35
34
33
33
32
32
3O
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
31
32
32
32
33
33
34
34
35
35
35
35
35
35
35
35
36
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 DF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
-------
_. ____
CRLCULRTED OPflCITY PLUS OR
MINUS ONE STRNDflRD DEVIRTION
RVERR&E OPflCITY STRNDflRD
en
CL-
90
80
70
6©
50
4©
. 30
20
10
©
-1©
I I
I
I I
15:55 15:5? 15:59 16: 1
CENTRflL TIME
16: 3
16: 5
STRCK 1. NIPSCO MITCHELL STFITION, GRRY, INDIRNR
-------
0=
Q_
CD
100
90
80
70
' 60
4
50
40
. 30
20
10
0
-10
DRTE: e/ s/eo
CRLCULRTED OPRCITY PLUS OR
MINUS ONE STRNDRRD DEVIRTION
RVERRGE OPfiCITY STRNDRRD
\ i i
"i «,* r * x* *
16: 5 16: 7 16: 9 16:11
CENTRflL TIME
16: 13
16: 15
STflCK 1. NIPSCO MITCHELL SinTION, GfiRY, INDIRNn
-------
OMEGA-0051
NORTHERN INDIANA PUBLIC SERVICE COMPANY
MITCHELL STATION
Stack II
June 5, 1980, 16:18:09 to 16:48:38
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0051, STACK 2,
DATE
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/BO
6/ 5/BO
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/80
6/ 5/BO
6/ 5/80
6/ 5/80
6/ 5/80
NIPSCO
TIME OPACITY
16 18- 9
16 18 18
16 18 27
16 18 36
16 18 44
16 18 53
16 19 2
16 19 11
16. 19 20
16 19 29
16 19 38
16 19 47
16 19 56
16-20. 4
16 20 13
16 21 18
16 21 27
16 21 36
16 21 45
16 21 54
16 22 2
16 22: 11
16 22-20
16.22.29
16.22-38
16 22 47
16 22 56
16 23- 5
16 23 14
16 23 23
16 23:31
16 23 40
16 23 49
16-23- SB
16 24 7
16 24 16
16 24 25
16 24 33
16 24 42
16 24 51
16 25 0
16 25 9
16.25 18
16 25 27
16.25.36
16-25 45
16 25.54
16-26. 2
16 26 11
16 26 20
18
12
18
17
19
2O
22
21
17
14
22
17
16
18
18
16
18
16
15
22
21
15
17
19
20
15
13
18
16
20
14
14
17
13
15
11
19
9
7
21
21
21
19
16
19
19
16
16
17
13
MITCF
SO
1
2
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
1
2
2
2
1
1
1
1
1
2
1
1
1
1
1
ILL STATION. GARY, IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
0
0
0
O
O
O
0
O
O
0
0
0
0
O
O
O
O
0
0
0
O
O
0
O
O
O
0
0
O
0
0
0
O
.17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
0
0
O
0
0
O
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
O OF
O OF
0 OF
0 OF
O OF
0 OF
0 OF
O OF
0 OF
O OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
O
O
O
0
0
0
0
0
O
O
O
O
0
O
0
0
O
O
0
O
O
O
0
0
0
0
0
0
0
0
O
0
0
34
35
35
35
35
35
35
35
35
35
35
35
35
35
35
35
0
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0051. STACK 2.
DATE
bf
bt
bf
bf
bf
bf
bf
bt
k>l
bt
bf
bf
bf
bf
bt
b/
bf
bt
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bt
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
5/80
5/80
5/80
5/80
5/BO
5/80
5/80
5/80
5/80
5/BO
5/80
5/80
5/80
5/80
5/80
5/80
5/BO
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/8O
5/80
5/80
5/BO
5/80
5/80
5/80
5/8O
5/80
5/80
5/80
5/80
5/80
5/BO
5/80
5/80
5/80
5/80
5/80
5/80
NIPSCO
TIME OPACITY
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16.
16
16
16
16.
16
16
16
16
16
16
16
16
16
16
16
16
16
16.
16
16
16
16
16
16
16
16
16-
26
26
26
26
27
27
27
27-
27-
27
37-
28
28-
28
28
28
28
29
29
29.
29
29
29.
29
30
30
3O
30
30
30
30
31-
31
31
31
31-
31
31
32
32
32
32
32
32
33
33.
33
16-33:
16
16
33.
33
29
38
47
56
4
13
22
31
40
49
58
7
16
25
34
43
51
0
9
18
27
36
45
54
3
13
20
27
38
47
56
5
14
23
32
41
50
58
7
16
25
34
43
52
1
10
28
36
45
54
19
22
18
20
13
12
16
10
17
15
14
15
12
16
13
13
16
19
7
8
13
13
17
IS
16
16
13
18
13
21
15
14
16
12
17
12
13
11
11
13
13
13
9
9
1 1
14
12
17
14
11
MITCt
SO
1
1
2
2
2
1
2
2
1
2
2
2
2
1
1
1
1
1
2
2
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
ELL STATION, GARY. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
0
0
0
0
17
17
17
16
16
16
16
16
16
16
16
16
16
16
16
15
15
15
15
15
15
IS
15
15
15
16
16
15
15
15
15
15
15
15
15
15
15
14
14
14
14
14
14
14
14
14
O
0
0
0
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
O OF
0 OF
O OF
O OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
O OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0
0
0
0
40
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
40
40
40
40
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO SO325
OMEGA-OO51, STACK 2.
DATE
bf
bf
t>f
bf
bf
bf
bt
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bl
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
5/BO
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/BO
5/80
5/80
5/80
5/80
5/BO
5/80
5/BO
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/BO
5/BO
5/BO
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/SO
5/80
5/80
5/80
NIPSCO
TIME OPACITY
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
34
34
34
34
34
34
34
35-
35
35-
35
35
35-
35
36-
36
36
36
36.
36-
36
37-
37
37
37
37
37
38
38
38:
38
38
38
38
39
39-
39-
39-
39
39
39:
40.
40
4O
40
40
40.
41:
41:
41:
3
12
21
29
38
47
56
5
14
23
32
40
49
58
7
16
25
33
42
51
51
0
9
18
27
44
53
2
11
20
29
38
47
55
4
13
22
31
40
48
57
6
15
24
33
42
51
0
9
17
16
16
14
14
19
9
14
11
13
16
16
6
9
11
15
15
12
15
17
17
17
17
21
IS
18
17
17
22
13
11
18
11
11
12
14
13
10
25
17
21
16
15
13
14
19
15
20
24
13
20
MI TCI
SO
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
2
1
1
1
1
I
1
1
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
ELL STATION, GARY, IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
14
14
14
14
14
14
14
14
14
14
14
14
14
13
13
13
13
13
13
13
13
13
14
14
14
14
14
14
14
14
14
14
14
•14
14
14
14
15
15
15
15
15
15
15
15
15
15
15
15
16
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
O OF
O DF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
O OF
O DF
O OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
41
41
41
41
41
4O
40
40
40
40
40
40
40
40
40
40
41
41
41
41
41
41
41
41
41
41
41
41
41
41
-------
UNITED STATES ENVIRONMENTAL. PROTECTION AGENCY
NATIONAL ENFORCEMENT INVESTIGATIONS CENTER
DENVER. COLORADO 80225
OMEGA-0051, STACK 2,
DATE
bt
bf
bf
bf
bf
bf
bf
6/
6/
bf
bf
bf
6/
6/
bf
bf
bl
b/
b/
bf
b/
b/
b/
bf
b/
bf
bf
bf
bf
bf
bf
b/
bf
bf
bf
b/
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
bf
5/80
5/80
5/80
5/80
5/80
5/80
5/BO
5/8O
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/8O
5/80
5/80
5/80
5/80
5/80
5/80
5/8O
5/80
5/8O
5/80
5/80
5/80
5/80
5/80
5/80
5/8O
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
5/80
NIPSCO
TIME OPACITY
16
16
16
16
16
16
16
16.
16
16
16
16
16
16
16
16
16
16
16
16.
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
41
41
41-
41-
42
42
42
42-
42
42
42
43.
43.
43-
43-
43
43
43
44
44
44.
44
44-
44.
44.
45
45-
45:
45:
45.
45.
46
46-
46
46-
46-
46
47
47
47.
47.
47
47
47
48
48
48
48
48'
26
35
44
53
2
11
20
28
37
46
55
4
13
21
30
39
48
56
5
14
23
32
40
49
58
7
15
33
42
51
59
B
17
26
35
43
52
1
10
18
27
36
45
54
2
11
20
29
38
21
17
11
17
19
13
9
14
7
16
12
12
10
10
23
15
27
17
16
24
19
33
21
18
29
21
13
21
12
16
13
16
17
11
16
13
9
14
14
12
14
17
14
19
14
15
23
17
12
MI TCI
SO
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
ELL STATION. GARY. IN FROM SOUTHWEST OF PLANT SIX MINUTE AVERAGES
VIOLATION AVERAGE OPACITY AVERAGE SO VIOLATION NUMBER DISCARDED
16
16
16
16
16
16
16
16
16
16
16
16
15
15
15
15
16
16
15
16
16
16
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
16
16
16
16
16
16
16
16
16
16
17
17
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
O OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
0 OF
41
41
41
41
41
41
41
41
41
41
40
40
40
40
40
41
41
41
41
41
41
41
41
41
41
41
41
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
41
41
41
40
40
-------
DflTE: 6/ 5/88
CflLCULRTED OPflCITY PLUS OR
MINUS ONE STRNDRRD DEVIRTION
RVERRGE OPflCITY STRNDflRD
LJ
01
CL-
90
80
70
60
50
40
. 30
20
10
0
-1®
16:15 16:17 16:19 16:21
CENTRflL TIME
16:23
16:25
STRCK 2, NIPSCO MITCHELL STRTION, GRRY, INDIRNR
-------
CJ
oz
Q_
CD
100
90
80
70
' 60
50
. 30
s
20
10
0
-10
DflTE: 6/ 5/80
CRLCULRTED OPRCITY PLUS OR
MINUS ONE STRNDRRD DEVIRTION
RVERRGE OPRCITY STRNDRRD
16:25
16:27
16:29
16:31
16:33
16:35
CENTRRL TIME
STRCK 2, NIPSCO MITCHELL STflTION, GflRY, INDIRNR
-------
DRTE: e/ s/ao
11319
LJ
0=
Q_
90 -
SO
70 -
60 -
50
40
I 30
20
10
0
-10
16:35
CRLCULRTED OPflCITY PLUS OR
MINUS ONE STRNDRRD DEVIRTION
RVERRGE OPRCITY STRHDRRD
16:37
16: 39
16:41
16:43
16:45
CENTRRL TIME
STRCK 2. NIPSCO MITCHELL STRTION, GRRY, 1NDIRNR
-------
DOTE: 6/ 5/80
CRLCULHTED OPRCITY PLUS OR
MINUS ONE STRNORRD OEVIRTION
RVERR6E OPRCITY STRNDRRD
LJ
OZ
Q_
90
80
70
60
50
40
. 30
20
10
0
-10
-X I
16:45 16:4? 16:49 16:51
CENTRRL TIME
16:53
16:55
STRCK 2, NIPSCO MITCHELL STRTION, GflRY, INDIRNR
------- |