Date Location

Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5

STEL (Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily

Max

(Instantaneous)

Units Notes

5/6/2020 East Perimeter 0:11:27 0.017 0.029 0.102 0.019 0.037 0.140 mg/m3

5/6/2020 North Perimeter 0:11:26 0.014 0.036 0.089 0.020 0.053 0.139 mg/m3

5/6/2020 South Perimeter 0:11:01 0.012 0.017 0.122 0.014 0.024 0.184 mg/m3

5/6/2020 West Perimeter 0:11:04 0.012 0.021 0.047 0.014 0.027 0.071 mg/m3

5/6/2020Firehouse 109

(Northeast-Offsite)0:11:27 0.004 0.008 0.017 0.005 0.009 0.018 mg/m3

5/6/2020Firehouse 34 (South-

Offsite)0:11:12 0.016 0.192 0.702 0.018 0.195 0.707 mg/m3

5/6/2020Firehouse 38 (North-

Offsite)0:11:33 0.000 0.001 0.017 0.001 0.002 0.020 mg/m3

5/7/2020 East Perimeter 0:11:53 0.024 0.069 0.192 0.039 0.127 0.375 mg/m3

5/7/2020 North Perimeter 0:11:57 0.012 0.029 0.074 0.016 0.036 0.127 mg/m3

5/7/2020 South Perimeter 0:12:01 0.003 0.006 0.029 0.004 0.010 0.048 mg/m3

5/7/2020 West Perimeter 0:11:58 0.044 0.094 0.371 0.071 0.161 0.626 mg/m3

The 15-min max for PM10 at the

West Perimeter station

exceeded the NAAQS. The 15-

min max took place from 09:04

to 09:19.

5/7/2020Firehouse 109

(Northeast-Offsite)0:09:43 NA NA NA 0.023 0.031 1.060 mg/m3

5/7/2020Firehouse 34 (South-

Offsite)0:12:20 0.016 0.062 0.190 0.018 0.064 0.192 mg/m3

5/7/2020Firehouse 38 (North-

Offsite)0:11:18 0.012 0.018 0.036 0.014 0.019 0.038 mg/m3

5/8/2020 East Perimeter 0:09:12 0.012 0.025 0.133 0.017 0.041 0.191 mg/m3

5/8/2020 North Perimeter 0:11:13 0.034 0.063 2.380 0.039 0.076 2.810 mg/m3

5/8/2020 South Perimeter 0:10:54 0.004 0.008 0.028 0.006 0.012 0.035 mg/m3

5/8/2020 West Perimeter 0:11:03 0.010 0.029 0.210 0.017 0.052 0.366 mg/m3

5/8/2020Firehouse 109

(Northeast-Offsite)0:11:45 0.001 0.006 0.021 0.001 0.007 0.022 mg/m3

5/8/2020Firehouse 34 (South-

Offsite)0:11:06 0.002 0.005 0.026 0.003 0.007 0.038 mg/m3

5/8/2020Firehouse 38 (North-

Offsite)0:11:48 0.003 0.005 0.055 0.003 0.007 0.068 mg/m3

5/9/2020 East Perimeter 0:11:48 0.009 0.026 0.012 0.016 0.038 0.019 mg/m3

5/9/2020 North Perimeter 0:11:47 0.018 0.044 0.704 0.024 0.085 0.861 mg/m3

5/9/2020 South Perimeter 0:11:59 0.017 0.034 0.335 0.019 0.047 0.441 mg/m3

5/9/2020 West Perimeter 0:09:02 0.011 0.017 0.089 0.017 0.032 0.188 mg/m3

5/9/2020Firehouse 109

(Northeast-Offsite)0:11:38 0.004 0.010 0.025 0.005 0.011 0.029 mg/m3

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

May 2020

Page 1 of 35

Date Location

Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5

STEL (Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily

Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

May 2020

5/9/2020Firehouse 34 (South-

Offsite)0:11:39 0.005 0.016 0.373 0.006 0.017 0.373 mg/m3

5/9/2020Firehouse 38 (North-

Offsite)0:11:40 0.006 0.016 0.119 0.007 0.017 0.155 mg/m3

5/11/2020 East Perimeter 0:12:16 0.011 0.015 0.037 0.013 0.020 0.080 mg/m3

5/11/2020 North Perimeter 0:11:42 0.016 0.021 0.038 0.019 0.030 0.058 mg/m3

5/11/2020 South Perimeter 0:11:58 0.008 0.014 0.020 0.009 0.015 0.020 mg/m3

5/11/2020 West Perimeter 0:12:08 0.013 0.040 0.080 0.024 0.086 0.177 mg/m3

5/11/2020Firehouse 109

(Northeast-Offsite)0:11:44 0.008 0.012 0.042 0.009 0.012 0.042 mg/m3

5/11/2020Firehouse 34 (South-

Offsite)0:12:18 0.020 0.347 3.250 0.021 0.349 3.260 mg/m3

The 15-min max for both PM2.5

and PM10 at the Firehouse 34

station exceeded the NAAQS.

The 15-min max for both

parameters took place from

18:38 to 18:53. A grill was being

used at Firehouse 34 when the

monitoring station was broken

down. This breakdown occurred

at 18:53, i.e. contemporaneously

with the 15-min max at that

location.

5/11/2020Firehouse 38 (North-

Offsite)0:11:18 0.009 0.018 0.124 0.009 0.019 0.133 mg/m3

5/12/2020 East Perimeter 0:11:57 0.021 0.030 0.086 0.029 0.049 0.173 mg/m3

5/12/2020 North Perimeter 0:12:02 0.022 0.032 0.065 0.030 0.047 0.129 mg/m3

The 15-min max for PM10 at the

North Perimeter station

exceeded the NAAQS. The 15-

min max for PM10 took place

from 15:07 to 15:22.

5/12/2020 South Perimeter 0:12:02 0.004 0.010 0.046 0.006 0.012 0.075 mg/m3

5/12/2020 West Perimeter 0:12:04 0.030 0.050 0.164 0.053 0.094 0.380 mg/m3

5/12/2020Firehouse 109

(Northeast-Offsite)0:11:50 0.016 0.053 0.272 0.018 0.074 0.415 mg/m3

5/12/2020Firehouse 34 (South-

Offsite)0:11:51 0.015 0.031 0.116 0.016 0.032 0.118 mg/m3

The 15-min max for both PM2.5

and PM10 at the Firehouse 34

station exceeded the NAAQS.

The 15-min max for both

parameters took place from

16:00 to 16:15.

Page 2 of 35

Date Location

Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5

STEL (Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily

Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

May 2020

5/12/2020Firehouse 38 (North-

Offsite)0:12:00 0.023 0.034 0.050 0.024 0.035 0.051 mg/m3

5/13/2020 East Perimeter 0:12:51 0.022 0.032 0.103 0.031 0.054 0.181 mg/m3

5/13/2020 North Perimeter 0:12:34 0.032 0.144 1.410 0.056 0.328 3.340 mg/m3

The 15-min max for PM10 at the

North Perimeter station

exceeded the NAAQS.  The 15-

min max for PM10 took place

from 15:07 to 15:22.

5/13/2020 South Perimeter 0:12:11 0.010 0.040 0.026 0.013 0.042 0.053 mg/m3

5/13/2020 West Perimeter 0:12:14 0.024 0.040 0.268 0.039 0.081 0.567 mg/m3

5/13/2020Firehouse 109

(Northeast-Offsite)0:11:57 0.018 0.091 0.419 0.020 0.092 0.420 mg/m3

5/13/2020Firehouse 34 (South-

Offsite)0:12:31 0.061 0.579 2.180 0.064 0.583 2.190 mg/m3

The 15-min max for both PM2.5

and PM10 at the Firehouse 34

station exceeded the NAAQS.

The 15-min max for both

parameters took place from

16:00 to 16:15.

5/13/2020Firehouse 38 (North-

Offsite)0:11:29 0.016 0.020 0.035 0.019 0.023 0.040 mg/m3

5/15/2020 East Perimeter 0:11:11 0.014 0.027 0.044 0.016 0.031 0.058 mg/m3

5/15/2020 North Perimeter 0:11:23 0.019 0.039 0.154 0.024 0.066 0.284 mg/m3

5/15/2020 South Perimeter 0:11:14 -0.001 0.005 0.020 0.000 0.006 0.024 mg/m3

The max 8-hour TWA for both

PM2.5 and PM10 at the South

Perimeter station were negative.

This is indicative of sensor drift,

and the results for this location

represent instrument

malfunction.

5/15/2020 West Perimeter 0:11:37 0.020 0.036 0.066 0.024 0.042 0.130 mg/m3

5/15/2020Firehouse 109

(Northeast-Offsite)0:11:09 0.013 0.027 0.110 0.014 0.027 0.134 mg/m3

5/15/2020Firehouse 34 (South-

Offsite)0:10:59 0.020 0.161 0.731 0.020 0.162 0.733 mg/m3

The 15-min max for both PM2.5

and PM10 at the Firehouse 34

station exceeded the NAAQS.

The 15-min max for both

parameters took place from

12:01 to 12:16.

5/15/2020Firehouse 38 (North-

Offsite)0:10:47 0.012 0.023 0.139 0.012 0.023 0.140 mg/m3

5/18/2020 East Perimeter 0:12:15 0.024 0.040 0.059 0.027 0.041 0.089 mg/m3

Page 3 of 35

Date Location

Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5

STEL (Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily

Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

May 2020

5/18/2020 North Perimeter 0:12:06 0.031 0.042 0.101 0.035 0.054 0.194 mg/m3

5/18/2020 South Perimeter 0:11:41 0.013 0.033 0.010 0.015 0.036 0.011 mg/m3

5/18/2020 West Perimeter 0:11:49 0.024 0.039 0.150 0.027 0.044 0.155 mg/m3

5/18/2020Firehouse 109

(Northeast-Offsite)0:11:27 0.022 0.033 0.067 0.023 0.033 0.068 mg/m3

5/18/2020Firehouse 34 (South-

Offsite)0:12:22 0.021 0.030 0.049 0.022 0.031 0.053 mg/m3

5/18/2020Firehouse 38 (North-

Offsite)0:12:27 -0.019 0.005 0.009 -0.018 0.006 0.012 mg/m3

The max 8-hour TWA for both

PM2.5 and PM10 at the

Firehouse 38 station were

negative.  This is indicative of

sensor drift and the results for

this location represent

instrument malfunction. 

5/19/2020 East Perimeter 0:08:37 0.027 0.043 0.093 0.029 0.044 0.094 mg/m3

5/19/2020 North Perimeter 0:08:35 0.025 0.037 0.099 0.028 0.048 0.137 mg/m3

5/19/2020 South Perimeter 0:08:30 0.024 0.037 0.040 0.026 0.040 0.043 mg/m3

5/19/2020 West Perimeter 0:08:33 0.025 0.036 0.083 0.027 0.041 0.085 mg/m3

5/19/2020Firehouse 109

(Northeast-Offsite)0:08:40 0.020 0.028 0.031 0.021 0.028 0.035 mg/m3

5/19/2020Firehouse 34 (South-

Offsite)0:08:42 0.025 0.035 0.036 0.026 0.037 0.038 mg/m3

5/19/2020Firehouse 38 (North-

Offsite)0:08:41 0.026 0.032 0.040 0.026 0.033 0.042 mg/m3

5/20/2020 East Perimeter 0:12:03 0.013 0.017 0.032 0.016 0.021 0.056 mg/m3

5/20/2020 North Perimeter 0:12:01 0.015 0.030 0.121 0.021 0.036 0.126 mg/m3

5/20/2020 South Perimeter 0:12:00 0.011 0.016 0.064 0.012 0.019 0.074 mg/m3

5/20/2020 West Perimeter 0:12:10 0.015 0.030 0.074 0.022 0.059 0.163 mg/m3

5/20/2020Firehouse 109

(Northeast-Offsite)0:11:56 0.009 0.016 0.066 0.009 0.017 0.067 mg/m3

5/20/2020Firehouse 34 (South-

Offsite)0:11:48 0.011 0.018 0.115 0.012 0.019 0.116 mg/m3

5/20/2020Firehouse 38 (North-

Offsite)0:12:00 0.007 0.009 0.121 0.008 0.010 0.167 mg/m3

5/21/2020 East Perimeter 0:12:10 0.014 0.022 0.063 0.018 0.033 0.108 mg/m3

5/21/2020 North Perimeter 0:12:10 0.022 0.033 0.109 0.034 0.054 0.220 mg/m3

5/21/2020 South Perimeter 0:12:03 0.011 0.015 0.003 0.012 0.018 0.006 mg/m3

5/21/2020 West Perimeter 0:12:08 0.015 0.029 0.084 0.020 0.070 0.241 mg/m3

5/21/2020Firehouse 109

(Northeast-Offsite)0:11:45 0.009 0.023 0.129 0.010 0.024 0.131 mg/m3

Page 4 of 35

Date Location

Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5

STEL (Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily

Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

May 2020

5/21/2020Firehouse 34 (South-

Offsite)0:12:22 0.015 0.031 0.270 0.017 0.033 0.277 mg/m3

5/21/2020Firehouse 38 (North-

Offsite)0:11:27 0.010 0.019 0.051 0.011 0.020 0.052 mg/m3

5/22/2020 East Perimeter 0:11:59 0.031 0.054 0.087 0.035 0.060 0.098 mg/m3

5/22/2020 North Perimeter 0:12:08 0.037 0.083 0.328 0.048 0.149 0.611 mg/m3

5/22/2020 South Perimeter 0:11:24 0.029 0.055 0.105 0.033 0.066 0.187 mg/m3

5/22/2020 West Perimeter 0:11:34 0.032 0.059 0.107 0.041 0.076 0.262 mg/m3

5/22/2020Firehouse 109

(Northeast-Offsite)0:07:14 0.104 0.235 0.267 0.108 0.241 0.282 mg/m3

The 15-min max for PM2.5 and

PM10 at the Firehouse 109

station exceeded the NAAQS.

The 15-min max for both

parameters occurred between

13:31 and 13:46. At 14:21,

evidence of landscape work and

grass mowing near the

monitoring location was

observed.

5/22/2020Firehouse 34 (South-

Offsite)0:12:24 0.032 0.075 0.196 0.033 0.077 0.199 mg/m3

5/22/2020Firehouse 38 (North-

Offsite)0:11:38 0.025 0.041 0.048 0.026 0.042 0.053 mg/m3

5/26/2020 East Perimeter 0:12:27 0.017 0.028 0.038 0.021 0.033 0.056 mg/m3

5/26/2020 North Perimeter 0:12:31 0.031 0.066 0.431 0.050 0.132 0.977 mg/m3

5/26/2020 South Perimeter 0:12:10 0.025 0.044 0.067 0.037 0.077 0.130 mg/m3

The DustTrak at CP-S read

negative (indicative of sensor

drift) until around 8:20 when the

unit was zeroed and restarted

the run.

5/26/2020 West Perimeter 0:12:31 0.029 0.050 0.163 0.045 0.098 0.455 mg/m3

5/26/2020Firehouse 109

(Northeast-Offsite)0:07:47 NA 0.024 0.118 NA 0.025 0.122 mg/m3

DustTrak at FD-109 read

negative (indicative of sensor

drift) until around 10:45 when the

unit was zeroed and restarted

the run. Only data from after

10:45 was included in these

analyses.

5/26/2020Firehouse 34 (South-

Offsite)0:12:28 0.017 0.039 0.105 0.018 0.041 0.106 mg/m3

Page 5 of 35

Date Location

Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5

STEL (Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily

Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

May 2020

5/26/2020Firehouse 38 (North-

Offsite)0:11:32 0.010 0.023 0.039 0.012 0.025 0.042 mg/m3

5/27/2020 East Perimeter 0:11:40 0.017 0.029 0.086 0.023 0.038 0.196 mg/m3

5/27/2020 North Perimeter 0:11:40 0.029 0.062 0.260 0.044 0.104 0.456 mg/m3

5/27/2020 South Perimeter 0:11:36 0.059 0.075 0.087 0.065 0.090 0.128 mg/m3

5/27/2020 West Perimeter 0:11:36 0.033 0.102 0.319 0.054 0.214 0.752 mg/m3

5/27/2020Firehouse 109

(Northeast-Offsite)0:11:43 0.016 0.038 0.068 0.017 0.039 0.069 mg/m3

5/27/2020Firehouse 34 (South-

Offsite)0:10:56 0.019 0.028 0.089 0.020 0.031 0.090 mg/m3

5/27/2020Firehouse 38 (North-

Offsite)0:09:08 0.024 0.029 0.071 0.025 0.031 0.084 mg/m3

5/28/2020

Monitoring not conducted

5/28/2020 due to weather

conditions.

5/29/2020 East Perimeter 0:12:02 0.014 0.022 0.064 0.022 0.042 0.137 mg/m3

5/29/2020 North Perimeter 0:12:15 0.011 0.016 0.066 0.015 0.025 0.127 mg/m3

5/29/2020 South Perimeter 0:12:30 0.005 0.011 0.024 0.008 0.016 0.060 mg/m3

5/29/2020 West Perimeter 0:12:32 0.021 0.030 0.142 0.035 0.064 0.355 mg/m3

5/29/2020Firehouse 109

(Northeast-Offsite)0:12:15 0.009 0.017 0.065 0.010 0.018 0.066 mg/m3

5/29/2020Firehouse 34 (South-

Offsite)0:11:56 0.009 0.016 0.079 0.010 0.018 0.081 mg/m3

5/29/2020Firehouse 38 (North-

Offsite)0:11:54 0.012 0.017 0.025 0.015 0.020 0.028 mg/m3

Notes:

mg/m3 = milligrams per cubic meter

NA = Not Applicable

NAAQS = National Ambient Air Quality Standards

STEL = Short-term exposure limit (15-minute duration)

TWA = Time-weighted average

Page 6 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

6/1/2020 East Perimeter 0:06:03 NA 0.030 0.217 NA 0.058 0.411 mg/m3

6/1/2020 North Perimeter 0:05:50 NA 0.044 0.168 NA 0.096 0.360 mg/m3

6/1/2020 South Perimeter 0:05:28 NA 0.032 0.042 NA 0.055 0.074 mg/m3

6/1/2020 West Perimeter 0:05:37 NA 0.039 0.209 NA 0.068 0.339 mg/m3

6/1/2020 Firehouse 109

(Northeast-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/1/2020 Firehouse 34

(South-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/1/2020 Firehouse 38

(North-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/2/2020 East Perimeter 0:08:00 NA 0.015 0.103 NA 0.037 0.235 mg/m3

6/2/2020 North Perimeter 0:07:52 NA 0.029 0.079 NA 0.053 0.166 mg/m3

6/2/2020 South Perimeter 0:07:56 NA 0.029 0.041 NA 0.043 0.069 mg/m3

6/2/2020 West Perimeter 0:07:58 NA 0.045 0.079 NA 0.069 0.156 mg/m3

6/2/2020 Firehouse 109

(Northeast-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/2/2020 Firehouse 34

(South-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/2/2020 Firehouse 38

(North-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/3/2020 East Perimeter 0:06:14 NA 0.024 0.042 NA 0.030 0.078 mg/m3

6/3/2020 North Perimeter 0:04:18 NA 0.022 0.052 NA 0.032 0.095 mg/m3

6/3/2020 South Perimeter 0:06:28 NA 0.015 0.022 NA 0.019 0.030 mg/m3

6/3/2020 West Perimeter 0:06:27 NA 0.042 0.054 NA 0.090 0.109 mg/m3

6/3/2020 Firehouse 109

(Northeast-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/3/2020 Firehouse 34

(South-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/3/2020 Firehouse 38

(North-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/4/2020 East Perimeter 0:08:07 0.022 0.041 0.110 0.030 0.064 0.204 mg/m3

6/4/2020 North Perimeter 0:08:08 0.020 0.035 0.055 0.026 0.052 0.098 mg/m3

6/4/2020 South Perimeter 0:07:46 NA 0.036 0.072 NA 0.046 0.114 mg/m3

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

Page 7 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

6/4/2020 West Perimeter 0:07:48 NA 0.183 1.000 NA 0.309 1.560 mg/m3 The 15-min max for

PM2.5 and PM10

exceeded the

NAAQS. The 15-

min max for both

parameters

occurred between

13:47 and 14:02.

6/4/2020 Firehouse 109

(Northeast-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/4/2020 Firehouse 34

(South-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/4/2020 Firehouse 38

(North-Offsite)

-- -- -- -- -- -- -- -- Not Monitored

6/5/2020 East Perimeter 0:09:29 0.021 0.035 0.162 0.033 0.060 0.312 mg/m3

6/5/2020 North Perimeter 0:09:15 0.019 0.038 0.122 0.027 0.052 0.256 mg/m3

6/5/2020 South Perimeter 0:01:26 NA 0.006 0.002 NA 0.013 0.007 mg/m3

6/5/2020 West Perimeter 0:09:01 0.028 0.050 0.116 0.045 0.107 0.275 mg/m3

6/5/2020 Mobile Monitor 1

(Pump House)

0:09:19 0.016 0.037 0.076 0.023 0.060 0.208 mg/m3

6/5/2020 Mobile Monitor 2

(Haul Road-East)

0:08:46 0.019 0.054 0.317 0.027 0.095 0.681 mg/m3

6/5/2020 Mobile Monitor 3

(Haul Road-North)

0:08:38 0.032 0.093 0.406 0.051 0.161 0.925 mg/m3 The 15-min max for

PM 10 exceeded

the NAAQS from

07:24 to 07:39.

6/8/2020 East Perimeter 0:08:40 0.008 0.021 0.112 0.013 0.035 0.225 mg/m3

6/8/2020 North Perimeter 0:08:38 0.019 0.029 0.111 0.036 0.053 0.238 mg/m3

6/8/2020 South Perimeter 0:08:36 0.010 0.019 0.041 0.014 0.031 0.074 mg/m3

6/8/2020 West Perimeter 0:08:38 0.024 0.071 0.232 0.044 0.162 0.566 mg/m3 The 15-min max for

PM 10 exceeded

the NAAQS from

11:14 to 11:29.

Page 8 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

6/8/2020 Mobile Monitor 1

(Pulaski and

Turbine Room

Corner)

0:03:25 NA 0.099 0.184 NA 0.222 0.428 mg/m3 The 15-min max for

PM 10 exceeded

the NAAQS from

14:18 to 14:33.

6/8/2020 Mobile Monitor 2

(Pump House)

0:08:45 0.010 0.017 0.308 0.015 0.031 0.438 mg/m3

6/8/2020 Mobile Monitor 3

(Haul Road-North)

0:08:26 0.025 0.092 0.640 0.048 0.200 1.450 mg/m3 The 15-min max for

PM 10 exceeded

the NAAQS from

10:40 to 10:55.

6/9/2020 East Perimeter 0:07:58 NA 0.030 0.060 NA 0.055 0.126 mg/m3

6/9/2020 North Perimeter 0:08:00 NA 0.104 0.411 NA 0.227 0.807 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 12:25

to 12:40.

6/9/2020 South Perimeter 0:07:22 NA 0.005 0.014 NA 0.011 0.031 mg/m3

6/9/2020 West Perimeter 0:07:23 NA 0.120 0.824 NA 0.236 1.530 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 9:58

to 10:13.

6/9/2020 Mobile Monitor 1

(Pulaski and

Turbine Room

Corner)

0:06:31 NA 0.026 0.045 NA 0.036 0.061 mg/m3

6/9/2020 Mobile Monitor 2

(Pump House)

0:06:27 NA 0.414 4.170 NA 0.774 8.200 mg/m3 The 15-min max for

PM2.5 and PM10

exceeded the

NAAQS from 8:07

until 8:22.

6/9/2020 Mobile Monitor 3

(Haul Road-North)

0:10:55 0.034 0.065 0.304 0.053 0.121 0.561 mg/m3

Page 9 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

6/10/2020 East Perimeter 0:10:55 0.029 0.046 0.150 0.045 0.085 0.200 mg/m3

6/10/2020 North Perimeter 0:10:49 0.030 0.045 0.055 0.045 0.072 0.113 mg/m3

6/10/2020 South Perimeter 0:10:28 0.025 0.043 0.029 0.034 0.068 0.031 mg/m3

6/10/2020 West Perimeter 0:10:46 0.016 0.031 0.044 0.026 0.059 0.075 mg/m3

6/10/2020 Mobile Monitor 1

(Pump House)

0:10:38 0.030 0.047 0.120 0.048 0.092 0.258 mg/m3

6/10/2020 Mobile Monitor 2

(Pulaski and

Turbine Room

Corner)

0:11:35 0.054 0.126 0.956 0.083 0.212 1.690 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 11:32

to 11:47.

6/10/2020 Mobile Monitor 3

(Haul Road-North)

0:10:55 0.034 0.065 0.304 0.053 0.121 0.561 mg/m3

6/11/2020 East Perimeter 0:08:35 0.007 0.010 0.023 0.010 0.017 0.040 mg/m3

6/11/2020 North Perimeter 0:08:36 0.018 0.087 0.363 0.035 0.119 0.385 mg/m3

6/11/2020 South Perimeter 0:08:50 0.006 0.013 0.048 0.010 0.027 0.119 mg/m3

6/11/2020 West Perimeter 0:08:34 0.031 0.073 0.379 0.081 0.182 0.703 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 09:15

to 09:30.

6/11/2020 Mobile Monitor 1

(Pump House)

0:09:00 0.016 0.132 0.089 0.030 0.173 0.210 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 14:55

to 15:10.

6/11/2020 Mobile Monitor 2

(Pulaski and

Turbine Room

Corner)

0:08:43 0.056 0.732 1.800 0.088 0.833 1.960 mg/m3 The 15-min max for

PM2.5 exceeded

the NAAQS from

15:01 to 15:16. The

15-min max for

PM10 exceeded the

NAAQS from 15:03

to 15:18

Page 10 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

6/11/2020 Mobile Monitor 3

(Haul Road-North)

0:08:50 0.017 0.074 0.905 0.033 0.177 2.310 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 10:10

to10:25.

6/12/2020 East Perimeter 0:08:42 0.020 0.101 0.266 0.030 0.126 0.302 mg/m3

6/12/2020 North Perimeter 0:08:27 0.011 0.030 0.267 0.016 0.045 0.432 mg/m3

6/12/2020 South Perimeter 0:06:56 NA 0.020 0.046 NA 0.030 0.090 mg/m3

6/12/2020 West Perimeter 0:07:28 NA 0.065 0.213 NA 0.148 0.528 mg/m3

6/12/2020 Mobile Monitor 1

(Downwind-

Bioswale Area)

0:07:35 NA 0.039 0.214 NA 0.079 0.453 mg/m3

6/12/2020 Mobile Monitor 2

(Bastard Bay and

East Haul Road)

0:07:32 NA 0.173 0.503 NA 0.320 1.130 mg/m3 The 15-min max for

PM2.5 and PM10

exceeded the

NAAQS. Both

exceedances

occurred from

07:55 to 08:110.

6/12/2020 Mobile Monitor 3

(Upwind-Heneghan

Work Trailer)

0:07:37 NA 0.068 1.030 NA 0.149 1.970 mg/m3

6/15/2020 East Perimeter 0:07:35 NA 0.017 0.109 NA 0.027 0.194 mg/m3

6/15/2020 North Perimeter 0:08:05 0.011 0.017 0.072 0.018 0.032 0.144 mg/m3

6/15/2020 South Perimeter 0:08:26 0.008 0.033 0.136 0.009 0.035 0.140 mg/m3

6/15/2020 West Perimeter 0:08:17 0.011 0.038 0.126 0.021 0.092 0.269 mg/m3

6/15/2020 Mobile Monitor 1

(Pump House)

0:08:27 0.016 0.048 0.069 0.024 0.090 0.134 mg/m3

Page 11 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

6/15/2020 Mobile Monitor 2

(Downwind-

Heneghan Work

Trailer)

0:08:37 0.016 0.069 0.323 0.029 0.133 0.704 mg/m3

6/15/2020 Mobile Monitor 3

(Upwind-North

Access Road)

0:08:40 0.014 0.051 0.432 0.024 0.107 0.935 mg/m3

6/16/2020 East Perimeter 0:08:22 0.017 0.028 0.122 0.021 0.043 0.259 mg/m3

6/16/2020 North Perimeter 0:08:07 0.024 0.039 0.071 0.032 0.059 0.152 mg/m3

6/16/2020 South Perimeter 0:08:30 0.020 0.075 0.150 0.025 0.097 0.213 mg/m3

6/16/2020 West Perimeter 0:08:03 0.030 0.084 0.324 0.046 0.176 0.825 mg/m3 The 15-min max for

PM10 exceeded

NAAQS at from

7:09 to 7:24.

6/16/2020 Mobile Monitor 1

(Downwind-

Heneghan Work

Trailer)

0:08:17 0.021 0.050 0.174 0.028 0.065 0.381 mg/m3

6/16/2020 Mobile Monitor 2

(Bastard Bay and

East Haul Road)

0:08:43 0.037 0.083 0.763 0.058 0.162 1.630 mg/m3 The 15-min max for

PM10 exceeded

NAAQS at from

13:54 to 14:09.

6/16/2020 Mobile Monitor 3

(Upwind-North

Access Road)

0:08:46 0.025 0.095 1.810 0.037 0.208 4.620 mg/m3

6/17/2020East Perimeter 0:10:01 0.029 0.050 0.143 0.037 0.069 0.316 mg/m3

6/17/2020 North Perimeter 0:09:41 0.024 0.035 0.135 0.033 0.059 0.268 mg/m3

6/17/2020 South Perimeter -- -- -- -- -- -- -- mg/m3

Page 12 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

6/17/2020

West Perimeter 0:09:38 0.034 0.062 0.223 0.048 0.097 0.447 mg/m3

6/17/2020 Mobile Monitor 1

(Downwind-

Heneghan Work

Trailer) 0:09:25 0.020 0.041 0.158 0.028 0.051 0.324 mg/m3

6/17/2020 Mobile Monitor 2

(Pump House) 0:08:53 0.006 0.044 0.546 0.008 0.051 0.979 mg/m3

6/17/2020

Mobile Monitor 3

(Upwind-East

Access Road) 0:09:09 0.029 0.164 2.460 0.050 0.392 7.180 mg/m3

6/18/2020 East Perimeter 0:08:43 0.022 0.039 0.088 0.030 0.051 0.185 mg/m3

6/18/2020 North Perimeter 0:08:33 0.023 0.041 0.131 0.032 0.063 0.256 mg/m3

6/18/2020 South Perimeter 0:06:30 NA 0.026 1:32:10 NA 0:53:46 2:44:10 mg/m3

6/18/2020

West Perimeter 0:08:22 0.033 0.160 0.342 0.050 0.350 0.791

mg/m3 The 15-min max for

PM2.5 and PM10

exceeded NAAQS

from 8:08 to 8:23.

6/18/2020

Mobile Monitor 1

(Downwind-

Heneghan Work

Trailer) 0:07:53 NA 0.169 1.040 NA 0.355 2.340

mg/m3 The 15-min max for

PM2.5 and PM10

exceeded NAAQS

from 8:12 to 8:27.

6/18/2020

Mobile Monitor 2

(Pump House) 0:07:49 NA 0.288 2.850 NA 0.558 5.850

mg/m3 The 15-min max for

PM2.5 and PM10

exceeded NAAQS

from 10:23 to

10:38.

6/18/2020

Mobile Monitor 3

(Upwind-East

Access Road) 0:08:32 0.025 0.127 0.273 0.040 0.241 0.558

mg/m3 The 15-min max for

PM2.5 and PM10

exceeded NAAQS

from 8:07 to 8:22.

6/19/2020 East Perimeter 0:08:34 0.037 0.069 0.144 0.049 0.090 0.287 mg/m3

Page 13 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

6/19/2020 North Perimeter 0:08:13 0.032 0.069 0.106 0.040 0.095 0.181 mg/m3

6/19/2020 South Perimeter 0:07:40 NA 0.054 1:26:24 NA 1:27:50 1:40:48 mg/m3

6/19/2020 West Perimeter 0:07:54 NA 0.088 0.260 NA 0.142 0.556 mg/m3

6/19/2020

Mobile Monitor 1

(Downwind-North

Haul Road) 0:07:24 NA 0.080 0.538 NA 0.165 1.250 mg/m3

The 15-min max for

PM10 exceeded

NAAQS from 11:02

to 11:17.

6/19/2020

Mobile Monitor 2

(Southwest corner

of Superstructure) 0:07:24 NA 0.092 0.692 NA 0.172 1.460 mg/m3

The 15-min max for

PM10 exceeded

NAAQS from 14:39

to 14:54.

6/19/2020

Mobile Monitor 3

(Upwind-Pump

House) 0:07:31 NA 0.373 7.940 NA 0.932 20.500 mg/m3

The 15-min max for

PM2.5 exceeded

the NAAQS from

11:40 to 11:55 and

the 15-min max for

PM10 exceeded

NAAQS from 11:40

to 11:50,

6/22/2020 East Perimeter 0:07:05 NA 0.050 0.099 NA 0.057 0.219 mg/m3

6/22/2020 North Perimeter 0:06:54 NA 0.044 0.094 NA 0.050 0.111 mg/m3

6/22/2020 South Perimeter 0:06:30 NA 0.047 0:08:38 NA 0.054 0:15:50 mg/m3

6/22/2020 West Perimeter 0:06:40 NA 0.058 0.138 NA 0.082 0.275 mg/m3

6/22/2020 Mobile Monitor 1

(Downwind-North

Haul Road) 0:06:57 NA 0.063 0.185 NA 0.088 0.444 mg/m3

6/22/2020 Mobile Monitor 2

(Southwest corner

of Superstructure) 0:06:45 NA 0.055 0.281 NA 0.065 0.437 mg/m3

6/22/2020 Mobile Monitor 3

(Upwind-Pump

House) 0:07:02 NA 0.102 0.392 NA 0.110 0.603 mg/m3

6/23/2020 East Perimeter 0:08:32 0.014 0.022 0.065 0.021 0.039 0.151 mg/m3

6/23/2020 North Perimeter 0:08:19 0.011 0.022 0.044 0.017 0.037 0.078 mg/m3

6/23/2020 South Perimeter 0:06:54 NA 0.016 0.038 NA 0.026 1:30:43 mg/m3

Page 14 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

6/23/2020 West Perimeter 0:08:00 NA 0.024 0.035 NA 0.049 0.064 mg/m3

6/23/2020 Mobile Monitor 1

(Downwind-North

Haul Road) 0:07:35 NA 0.060 0.057 NA 0.117 0.108 mg/m3

6/23/2020 Mobile Monitor 2

(Southwest corner

of Superstructure) 0:07:08 NA 0.041 0.486 NA 0.078 0.966 mg/m3

6/23/2020 Mobile Monitor 3

(Upwind-Pump

House) 0:07:11 NA 0.023 0.101 NA 0.043 0.195 mg/m3

6/24/2020 East Perimeter 0:07:47 NA 0.031 0.076 NA 0.061 0.159 mg/m3

6/24/2020 North Perimeter 0:07:51 NA 0.026 0.057 NA 0.037 0.095 mg/m3

6/24/2020 South Perimeter 0:08:10 0:12:43 0.019 0.034 0:15:30 0.029 1:23:31 mg/m3

6/24/2020 West Perimeter 0:07:54 NA 0.077 0.274 NA 0.187 0.620 mg/m3

6/24/2020 Mobile Monitor 1

(Downwind-North

Haul Road) 0:07:37 NA 0.071 0.305 NA 0.136 0.314 mg/m3

6/24/2020 Mobile Monitor 2

(Southwest corner

of Superstructure) 0:07:46 NA 0.057 0.406 NA 0.105 0.667 mg/m3

6/24/2020

Mobile Monitor 3

(Upwind-Pump

House) 0:07:41 NA 0.094 0.284 NA 0.174 0.631 mg/m3

The 15 min max for

PM10 exceeded the

NAAQS from 13:44

to 13:59

6/29/2020 East Perimeter 0:08:36 0.032 0.042 0.015 0.037 0.054 0.116 mg/m3

6/29/2020 North Perimeter 0:08:18 0.048 0.070 0.029 0.057 0.095 0.267 mg/m3

6/29/2020 South Perimeter 0:08:00 NA 0.041 0.015 NA 0.049 0:00:00 mg/m3

6/29/2020 West Perimeter 0:07:55 NA 0.070 0.023 NA 0.105 0.309 mg/m3

6/29/2020 Mobile Monitor 1

(Downwind-North

Haul Road) 0:07:30 NA 0.072 0.015 NA 0.135 1.390 mg/m3

6/29/2020 Mobile Monitor 2

(Southwest corner

of Superstructure) 0:08:28 0.042 0.060 0.020 0.054 0.086 0.306 mg/m3

6/29/2020 Mobile Monitor 3

(Upwind-Pump

House) 0:08:22 0.045 0.080 0.019 0.059 0.122 0.471 mg/m3

Page 15 of 35

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

June 2020

6/30/2020 East Perimeter 0:08:55 0.025 0.032 0.083 0.029 0.041 0.176 mg/m3

6/30/2020 North Perimeter 0:08:48 0.030 0.051 0.218 0.039 0.087 0.415 mg/m3

6/30/2020 South Perimeter 0:08:26 0.004 0.013 0.053 0.005 0.015 1:20:38 mg/m3

6/30/2020 West Perimeter 0:08:37 0.031 0.042 0.085 0.036 0.050 0.176 mg/m3

6/30/2020 Mobile Monitor 1

(Downwind-North

Haul Road) 0:08:12 0.029 0.049 0.084 0.036 0.068 0.150 mg/m3

6/30/2020

Mobile Monitor 2

(Southwest corner

of Superstructure) 0:08:24 0.047 0.104 0.373 0.062 0.188 0.802 mg/m3

The 15-min max

for PM10

exceeded the

NAAQS from

10:07 to 10:22.

6/30/2020 Mobile Monitor 3

(Upwind-Pump

House) 0:08:25 0.024 0.044 0.091 0.027 0.048 0.143 mg/m3

Notes:

mg/m3 = milligrams per cubic meter

NA = Not Applicable

NAAQS = National Ambient Air Quality Standards

STEL = Short-term exposure limit (15-minute duration)

TWA = Time-weighted average

Page 16 of 35

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

A B C D E F G H I J K

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

7/1/2020East Perimeter 0:08:08 0.028 0.036 0.091 0.034 0.047 0.187 mg/m3

7/1/2020 North Perimeter 0:07:51 NA 0.046 0.074 NA 0.071 0.136 mg/m3

7/1/2020 South Perimeter 0:01:22 NA 0.010 0.037 NA 0.013 0:59:02 mg/m3

7/1/2020 West Perimeter 0:08:03 0.035 0.076 0.548 0.045 0.138 1.180 mg/m3

7/1/2020 Mobile Monitor 1

(Downwind-North

Haul Road) 0:05:36 NA 0.060 0.188 NA 0.095 0.343 mg/m3

7/1/2020Mobile Monitor 2

(Southwest corner

of Superstructure) 0:07:53 NA 0.025 0.121 NA 0.049 0.171 mg/m3

7/1/2020 Mobile Monitor 3

(Upwind-Pump

House) 0:08:38 0.026 0.037 0.066 0.030 0.045 0.109 mg/m3

7/2/2020 East Perimeter 0:08:15 0.023 0.046 0.087 0.029 0.064 0.188 mg/m3

7/2/2020 North Perimeter 0:08:33 0.027 0.060 0.436 0.038 0.125 0.993 mg/m3

7/2/2020 South Perimeter 0:08:38 0.020 0.036 0.122 0.022 0.042 5:12:29 mg/m3

7/2/2020 West Perimeter 0:08:43 0.028 0.047 0.127 0.037 0.077 0.302 mg/m3

7/2/2020 Mobile Monitor 1

(Downwind-North

Haul Road)

0:07:49 NA 0.059 0.250 NA 0.098 0.532 mg/m3

7/2/2020 Mobile Monitor 2

(Southwest corner

of Superstructure)

0:07:46 NA 0.108 0.283 NA 0.227 0.602 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 13:31

to 13:46

7/2/2020 Mobile Monitor 3

(Upwind-Pump

House)

0:06:14 NA 0.092 0.303 NA 0.178 0.581 mg/m3

7/6/2020 East Perimeter 0:09:16 0.038 0.064 0.423 0.049 0.114 1.010 mg/m3

7/6/2020 North Perimeter 0:08:59 0.040 0.065 0.178 0.050 0.086 0.309 mg/m3

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

July 2020

6

A B C D E F G H I J K

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

23

24

25

26

27

7/6/2020 South Perimeter 0:08:28 0.035 0.091 0.593 0.041 0.172 6:28:48 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 10:33

to 10:49

7/6/2020 West Perimeter 0:08:45 0.051 0.099 0.230 0.068 0.168 0.474 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 06:42

to 06:57

7/6/2020 Mobile Monitor 1

(Downwind-North

Haul Road)

0:08:22 0.054 0.211 0.753 0.082 0.421 1.650 mg/m3 The 15-min max for

PM2.5 exceeded

the NAAQS from

10:44 to 10:59 and

the 15-min max for

PM10 exceeded the

NAAQS from 10:44

to 10:59

7/6/2020 Mobile Monitor 2

(Southwest corner

of Superstructure)

0:08:36 0.064 0.207 1.250 0.090 0.404 1.820 mg/m3 The 15-min max for

PM2.5 exceeded

the NAAQS from

06:28 to 06:43 and

the 15-min max for

PM10 exceeded the

NAAQS from 06:28

to 06:43

7/6/2020 Mobile Monitor 3

(Upwind-Pump

House)

0:08:11 0.052 0.140 0.485 0.081 0.276 1.210 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS from 07:12

to 07:27

6

A B C D E F G H I J K

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

28

29

30

31

32

33

7/7/2020 East Perimeter 0:10:03 0.058 0.250 0.664 0.086 0.466 1.300 mg/m3 The 15-min max for

PM2.5 exceeded

the NAAQS from

06:12 to 06:27 and

the 15-min max for

PM10 exceeded the

NAAQS from 06:12

to 06:27

7/7/2020 North Perimeter 0:10:08 0.043 0.079 0.127 0.053 0.103 0.214 mg/m3

7/7/2020 South Perimeter 0:10:36 0.048 0.222 1.380 0.060 0.358 14:24:00 mg/m3 The 15-min max for

PM2.5 exceeded

the NAAQS from

14:55 to 15:11 and

the 15-min max for

PM10 exceeded the

NAAQS from 12:07

to 12:23

7/7/2020 West Perimeter 0:09:56 0.079 0.261 0.603 0.124 0.498 1.190 mg/m3 The 15-min max for

PM2.5 exceeded

the NAAQS from

07:03 to 07:18 and

the 15-min max for

PM10 exceeded the

NAAQS from 07:03

to 07:18

7/7/2020 Mobile Monitor 1

(Upwind-Pump

House)

0:09:22 0.066 0.553 5.280 0.107 1.175 11.900 mg/m3 The 15-min max for

PM2.5 exceeded

the NAAQS from

12:03 to 12:18 and

the 15-min max for

PM10 exceeded the

NAAQS from 12:04

to 12:19

7/7/2020 Mobile Monitor 2

(Southwest corner

of Superstructure)

0:09:31 0.048 0.090 1.210 0.060 0.145 2.920 mg/m3

6

A B C D E F G H I J K

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

7/7/2020 Mobile Monitor 3

(Downwind-North

Haul Road)

0:09:39 0.098 0.360 2.280 0.176 0.845 4.780 mg/m3 The 15-min max for

PM2.5 exceeded

the NAAQS from

10:53 to 11:08 and

the 15-min max for

PM10 exceeded the

NAAQS from 10:53

to 11:08

7/8/2020 East Perimeter 0:10:25 0.036 0.048 0.114 0.041 0.063 0.171 mg/m3

7/8/2020 North Perimeter 0:09:44 0.035 0.047 0.073 0.043 0.062 0.115 mg/m3

7/8/2020 South Perimeter 0:11:00 0.010 0.016 0.179 0.011 0.019 6:46:05 mg/m3

7/8/2020 West Perimeter 0:10:37 0.038 0.052 0.111 0.043 0.070 0.186 mg/m3

7/8/2020 Mobile Monitor 1

(Upwind-Pump

House)

0:10:48 0.036 0.050 0.220 0.043 0.079 0.320 mg/m3

7/8/2020 Mobile Monitor 2

(Southwest corner

of Superstructure)

0:10:37 0.048 0.081 0.220 0.062 0.130 0.418 mg/m3

7/8/2020 Mobile Monitor 3

(Downwind-North

Haul Road)

0:10:59 0.034 0.045 0.187 0.038 0.060 0.492 mg/m3

7/9/2020 East Perimeter 0:10:45 0.039 0.069 0.108 0.045 0.081 0.201 mg/m3

7/9/2020 North Perimeter 0:10:29 0.046 0.085 0.188 0.061 0.108 0.373 mg/m3

7/9/2020 South Perimeter -- -- -- -- -- -- -- mg/m3

7/9/2020 West Perimeter 0:10:34 0.046 0.065 0.201 0.057 0.105 0.383 mg/m3

7/9/2020

Mobile Monitor 1

(Upwind-Pump

House) 0:10:20 0.042 0.058 0.150 0.054 0.086 0.304 mg/m3

7/9/2020 Mobile Monitor 2

(Southwest corner

of Superstructure)

0:10:43 0.051 0.540 10.400 0.075 0.942 15.400 mg/m3

The 15-min max for

PM2.5 and PM10

exceeded the

NAAQS at mobile

monitor 2 from

16:21 to 16:36

7/9/2020 Mobile Monitor 3

(Downwind-North

Haul Road)

0:09:57 0.042 0.060 0.229 0.052 0.085 0.489 mg/m3

7/10/2020 East Perimeter 0:05:39 NA 0.031 0.126 NA 0.059 0.242 mg/m3

7/10/2020 North Perimeter 0:05:35 NA 0.022 1.300 NA 0.022 1.330 mg/m3

6

A B C D E F G H I J K

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

7/10/2020 South Perimeter

(North Perimeter)

0:05:20 NA 0:25:36 10:29:17 NA 0:31:19 13:56:38 mg/m3

7/10/2020 West Perimeter 0:05:36 NA 0.018 0.039 NA 0.021 0.049 mg/m3

7/10/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/10/2020 Mobile Monitor 2

(Northeast

Perimeter)

0:05:38 NA 0.018 0.087 NA 0.023 0.110 mg/m3

7/10/2020 Mobile Monitor 3

(Northwest

Perimeter)

0:05:41 NA 0.016 0.063 NA 0.020 0.119 mg/m3

7/13/2020 East Perimeter 0:09:06 0.012 0.030 0.120 0.017 0.044 0.261 mg/m3

7/13/2020 North Perimeter 0:08:55 0.014 0.031 0.113 0.021 0.039 0.164 mg/m3

7/13/2020

South Perimeter 0:08:46 0.014 0.104 1.160 0.020 0.210 2.580 mg/m3

The 15-min max for

PM10 exceeded the

NAAQS from 7:58

to 8:13

7/13/2020 West Perimeter 0:08:51 0.021 0.072 0.348 0.030 0.132 0.735 mg/m3

7/13/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/13/2020 Mobile Monitor 2

(Upwind) 0:08:38 0.022 0.078 0.556 0.034 0.120 0.830 mg/m3

7/13/2020

Mobile Monitor 3

(Downwind) 0:08:51 0.022 0.077 0.843 0.039 0.157 2.020 mg/m3

The 15-min max for

PM10 exceeded the

NAAQS from 7:21

to 7:36

7/14/2020 East Perimeter 0:10:41 0.015 0.029 0.215 0.020 0.045 0.448 mg/m3

7/14/2020 North Perimeter 0:10:27 0.024 0.044 0.197 0.040 0.075 0.325 mg/m3

7/14/2020 South Perimeter 0:10:28 0.018 0.032 0.054 0.023 0.047 0.086 mg/m3

7/14/2020 West Perimeter 0:10:23 0.029 0.058 0.250 0.047 0.125 0.596 mg/m3

7/14/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/14/2020 Mobile Monitor 2

(Upwind) 0:10:13 0.020 0.041 0.242 0.029 0.066 0.477 mg/m3

7/14/2020 Mobile Monitor 3

(Downwind) 0:09:47 0.017 0.029 0.709 0.024 0.042 1.270 mg/m3

7/15/2020 East Perimeter 0:10:14 0.037 0.100 0.255 0.062 0.138 0.458 mg/m3

7/15/2020 North Perimeter 0:10:07 0.031 0.044 0.082 0.052 0.074 0.183 mg/m3

7/15/2020 South Perimeter 0:09:46 0.024 0.036 0.052 0.034 0.053 0.078 mg/m3

7/15/2020 West Perimeter 0:09:57 0.034 0.058 0.450 0.054 0.116 1.060 mg/m3

7/15/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

6

A B C D E F G H I J K

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

7/15/2020 Mobile Monitor 2

(Upwind) 0:09:43 0.033 0.058 0.519 0.047 0.099 0.744 mg/m3

7/15/2020

Mobile Monitor 3

(Downwind) 0:09:44 0.033 0.085 1.310 0.053 0.192 3.550 mg/m3

The 15-min max for

PM10 exceeded the

NAAQS from 14:49

to 15:04

7/16/2020 East Perimeter -- -- -- -- -- -- -- mg/m3

7/16/2020 North Perimeter 0:10:44 0.017 0.025 0.063 0.020 0.033 0.154 mg/m3

7/16/2020 South Perimeter 0:10:44 0.023 0.041 0.058 0.025 0.045 0.073 mg/m3

7/16/2020 West Perimeter 0:10:06 0.031 0.258 0.849 0.041 0.387 1.270 mg/m3

7/16/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/16/2020 Mobile Monitor 2

(Upwind) 0:10:08 0.016 0.027 0.125 0.018 0.027 0.210 mg/m3

7/16/2020 Mobile Monitor 3

(Downwind) 0:10:31 0.028 0.090 0.213 0.034 0.112 0.307 mg/m3

7/17/2020 East Perimeter 0:09:49 0.030 0.069 0.145 0.037 0.073 0.251 mg/m3

7/17/2020 North Perimeter 0:10:16 0.028 0.052 0.065 0.041 0.074 0.103 mg/m3

7/17/2020 South Perimeter 0:10:23 0.022 0.032 0.054 0.028 0.037 0.064 mg/m3

7/17/2020 West Perimeter 0:09:45 0.027 0.066 0.123 0.041 0.116 0.266 mg/m3

7/17/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/17/2020 Mobile Monitor 2

(Upwind) 0:10:04 0.021 0.036 0.094 0.028 0.044 0.147 mg/m3

7/17/2020 Mobile Monitor 3

(Downwind) 0:10:10 0.026 0.046 0.224 0.038 0.069 0.416 mg/m3

7/20/2020 East Perimeter 0:10:41 0.015 0.046 0.120 0.022 0.081 0.253 mg/m3

7/20/2020 North Perimeter 0:10:01 0.010 0.016 0.024 0.016 0.029 0.048 mg/m3

7/20/2020 South Perimeter 0:06:30 NA 0.013 0.039 NA 0.019 0.070 mg/m3

7/20/2020 West Perimeter 0:09:53 0.021 0.041 0.169 0.031 0.059 0.292 mg/m3

7/20/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/20/2020 Mobile Monitor 2

(Upwind) 0:09:46 0.017 0.040 0.137 0.022 0.053 0.294 mg/m3

7/20/2020 Mobile Monitor 3

(Downwind) 0:09:53 0.001 0.004 0.036 0.002 0.009 0.075 mg/m3

7/21/2020 East Perimeter 0:09:04 0.014 0.028 0.117 0.020 0.043 0.248 mg/m3

7/21/2020 North Perimeter 0:08:54 0.016 0.025 0.082 0.026 0.039 0.153 mg/m3

7/21/2020 South Perimeter 0:08:40 0.008 0.018 0.021 0.009 0.020 0.025 mg/m3

6

A B C D E F G H I J K

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

7/21/2020

West Perimeter 0:09:00 0.035 0.184 0.637 0.044 0.196 0.649 mg/m3

The 15-min max for

PM2.5 and PM10

exceeded the

NAAQS from 13:52

to 14:07.

7/21/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/21/2020 Mobile Monitor 2

(Upwind) 0:08:42 0.020 0.045 0.142 0.027 0.065 0.232 mg/m3

7/21/2020 Mobile Monitor 3

(Downwind) 0:08:48 0.015 0.033 1.250 0.022 0.051 1.860 mg/m3

7/22/2020 East Perimeter 0:08:40 0.021 0.030 0.109 0.025 0.039 0.238 mg/m3

7/22/2020 North Perimeter 0:08:27 0.018 0.026 0.045 0.022 0.030 0.088 mg/m3

7/22/2020 South Perimeter 0:08:14 0.015 0.023 0.030 0.018 0.029 0.040 mg/m3

7/22/2020 West Perimeter 0:08:34 0.025 0.033 0.101 0.036 0.053 0.185 mg/m3

7/22/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/22/2020 Mobile Monitor 2

(Upwind) 0:08:27 0.021 0.041 0.172 0.025 0.054 0.262 mg/m3

7/22/2020 Mobile Monitor 3

(Downwind) -- -- -- -- -- -- -- mg/m3

7/23/2020 East Perimeter 0:09:45 0.011 0.026 0.097 0.017 0.041 0.168 mg/m3

7/23/2020 North Perimeter 0:09:34 0.009 0.018 0.100 0.013 0.032 0.213 mg/m3

7/23/2020 South Perimeter 0:09:40 0.011 0.035 0.031 0.014 0.055 0.059 mg/m3

7/23/2020 West Perimeter 0:09:50 0.020 0.048 0.143 0.033 0.083 0.327 mg/m3

7/23/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/23/2020 Mobile Monitor 2

(Upwind)

0:09:41 0.030 0.099 0.426 0.044 0.175 0.863 mg/m3 The 15-min max for

PM10 exceeded the

NAAQS at Mobile

Monitor 2 from 8:34

to 8:49.

7/23/2020 Mobile Monitor 3

(Downwind)

0:09:33 0.021 0.071 0.205 0.035 0.128 0.449 mg/m3

7/24/2020 East Perimeter 0:10:03 0.018 0.029 0.084 0.025 0.047 0.203 mg/m3

7/24/2020 North Perimeter 0:10:01 0.016 0.022 0.056 0.021 0.039 0.124 mg/m3

7/24/2020 South Perimeter 0:09:48 0.018 0.029 0.100 0.022 0.041 0.176 mg/m3

7/24/2020 West Perimeter 0:09:53 0.020 0.025 0.055 0.025 0.036 0.112 mg/m3

7/24/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/24/2020 Mobile Monitor 2

(Upwind)

0:09:55 0.027 0.055 0.385 0.039 0.099 0.832 mg/m3

7/24/2020 Mobile Monitor 3

(Downwind)

0:09:45 0.025 0.057 0.377 0.036 0.112 0.921 mg/m3

6

A B C D E F G H I J K

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

7/27/2020 East Perimeter 0:09:26 0.019 0.040 0.252 0.023 0.053 0.354 mg/m3

7/27/2020 North Perimeter 0:09:52 0.015 0.020 0.032 0.018 0.026 0.062 mg/m3

7/27/2020 South Perimeter 0:09:34 0.015 0.030 0.040 0.018 0.034 0.045 mg/m3

7/27/2020 West Perimeter 0:09:42 0.021 0.028 0.043 0.027 0.040 0.069 mg/m3

7/27/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/27/2020 Mobile Monitor 2

(Upwind)

0:09:46 0.019 0.035 0.082 0.021 0.038 0.083 mg/m3

7/27/2020 Mobile Monitor 3

(Downwind)

0:09:34 0.025 0.060 0.112 0.033 0.097 0.247 mg/m3

7/28/2020 East Perimeter 0:09:46 0.015 0.030 0.157 0.027 0.073 0.356 mg/m3

7/28/2020 North Perimeter 0:09:53 0.014 0.024 0.124 0.025 0.047 0.289 mg/m3

7/28/2020 South Perimeter 0:09:44 0.012 0.030 0.183 0.017 0.050 0.342 mg/m3

7/28/2020 West Perimeter 0:09:44 0.019 0.046 0.237 0.030 0.091 0.422 mg/m3

7/28/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/28/2020 Mobile Monitor 2

(Upwind) 0:09:41 0.016 0.048 0.384 0.024 0.092 0.806 mg/m3

7/28/2020 Mobile Monitor 3

(Downwind) 0:09:30 0.027 0.064 0.397 0.057 0.143 0.912 mg/m3

7/29/2020 East Perimeter 0:09:09 0.021 0.044 0.091 0.035 0.078 0.195 mg/m3

7/29/2020 North Perimeter 0:09:42 0.013 0.020 0.084 0.019 0.035 0.170 mg/m3

7/29/2020 South Perimeter 0:10:20 0.013 0.023 0.059 0.016 0.027 0.105 mg/m3

7/29/2020 West Perimeter 0:09:54 0.022 0.076 0.484 0.036 0.192 1.310 mg/m3

7/29/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/29/2020 Mobile Monitor 2

(Upwind) 0:09:46 0.013 0.027 0.414 0.017 0.045 0.543 mg/m3

7/29/2020 Mobile Monitor 3

(Downwind) 0:10:07 0.016 0.029 0.165 0.027 0.057 0.369 mg/m3

7/30/2020 East Perimeter 0:08:57 0.018 0.030 0.191 0.027 0.054 0.376 mg/m3

7/30/2020 North Perimeter 0:09:31 0.022 0.072 0.220 0.036 0.141 0.440 mg/m3

7/30/2020 South Perimeter 0:10:00 0.016 0.034 0.081 0.023 0.056 0.145 mg/m3

7/30/2020 West Perimeter 0:09:48 0.029 0.056 0.283 0.056 0.125 0.683 mg/m3

7/30/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/30/2020 Mobile Monitor 2

(Upwind) 0:09:37 0.015 0.023 0.117 0.021 0.036 0.216 mg/m3

7/30/2020 Mobile Monitor 3

(Downwind) 0:09:59 0.044 0.214 0.621 0.088 0.490 1.390 mg/m3

7/31/2020 East Perimeter 0:10:29 0.014 0.028 0.133 0.021 0.041 0.272 mg/m3

7/31/2020 North Perimeter 0:09:53 0.013 0.022 0.042 0.022 0.042 0.082 mg/m3

7/31/2020 South Perimeter 0:09:28 0.011 0.029 0.035 0.014 0.036 0.043 mg/m3

7/31/2020 West Perimeter 0:09:51 0.028 0.097 0.915 0.057 0.243 2.540 mg/m3

6

A B C D E F G H I J K

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

158

159

160

161

162

163

164

165

166

167

7/31/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

7/31/2020 Mobile Monitor 2

(Upwind) 0:09:47 0.010 0.019 0.086 0.013 0.023 0.117 mg/m3

7/31/2020 Mobile Monitor 3

(Downwind) 0:09:32 0.021 0.061 0.232 0.039 0.110 0.539 mg/m3

Notes:

mg/m3 = milligrams per cubic meter

NA = Not Applicable

NAAQS = National Ambient Air Quality Standards

STEL = Short-term exposure limit (15-minute duration)

TWA = Time-weighted average

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

8/1/2020 East Perimeter 0:03:54 NA 0.022 0.065 NA 0.032 0.127 mg/m3

8/1/2020 North Perimeter 0:04:34 NA 0.017 0.042 NA 0.022 0.091 mg/m3

8/1/2020 South Perimeter 0:03:02 NA 0.014 0.029 NA 0.016 0.037 mg/m3

8/1/2020 West Perimeter 0:03:22 NA 0.032 0.110 NA 0.048 0.290 mg/m3

8/1/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/1/2020 Mobile Monitor 2

(Downwind)

0:03:09 NA 0.026 0.195 NA 0.037 0.351 mg/m3

8/1/2020 Mobile Monitor 3

(Upwind)

0:04:16 NA 0.026 0.144 NA 0.049 0.313 mg/m3

8/3/2020 East Perimeter 0:09:46 0.009 0.017 0.033 0.012 0.026 0.064 mg/m3

8/3/2020 North Perimeter 0:09:52 0.009 0.056 0.433 0.013 0.094 0.754 mg/m3

8/3/2020 South Perimeter 0:09:30 0.011 0.016 0.030 0.013 0.020 0.036 mg/m3

8/3/2020 West Perimeter 0:09:46 0.011 0.018 0.038 0.015 0.032 0.067 mg/m3

8/3/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/3/2020 Mobile Monitor 2

(Downwind)

0:09:46 0.012 0.033 0.261 0.013 0.034 0.285 mg/m3

8/3/2020 Mobile Monitor 3

(Upwind)

0:09:28 0.012 0.018 0.053 0.017 0.031 0.153 mg/m3

8/4/2020 East Perimeter 0:09:37 0.008 0.049 0.358 0.013 0.091 0.646 mg/m3

8/4/2020 North Perimeter 0:10:07 0.005 0.011 0.054 0.007 0.020 0.083 mg/m3

8/4/2020 South Perimeter 0:10:06 0.010 0.016 0.043 0.014 0.024 0.082 mg/m3

8/4/2020 West Perimeter 0:09:39 0.008 0.018 0.060 0.012 0.034 0.110 mg/m3

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

8/4/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/4/2020 Mobile Monitor 2

(Downwind)

0:10:05 0.015 0.054 0.732 0.024 0.106 1.540 mg/m3

8/4/2020 Mobile Monitor 3

(Upwind)

0:09:31 0.006 0.012 0.134 0.010 0.018 0.396 mg/m3

8/5/2020 East Perimeter 0:08:46 0.017 0.041 0.087 0.027 0.064 0.153 mg/m3

8/5/2020 North Perimeter 0:10:05 0.015 0.043 0.062 0.022 0.066 0.093 mg/m3

8/5/2020 South Perimeter 0:09:48 0.015 0.042 0.096 0.019 0.060 0.162 mg/m3

8/5/2020 West Perimeter 0:10:08 0.022 0.044 0.197 0.034 0.078 0.427 mg/m3

8/5/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/5/2020 Mobile Monitor 2

(Downwind)

0:09:40 0.016 0.060 0.409 0.022 0.099 0.838 mg/m3

8/5/2020 Mobile Monitor 3

(Upwind)

0:09:18 0.020 0.046 0.239 0.032 0.099 0.341 mg/m3

8/6/2020 East Perimeter 0:09:20 0.018 0.036 0.084 0.026 0.055 0.197 mg/m3

8/6/2020 North Perimeter 0:10:19 0.015 0.025 0.042 0.020 0.034 0.095 mg/m3

8/6/2020 South Perimeter 0:10:02 0.014 0.020 0.063 0.016 0.027 0.112 mg/m3

8/6/2020 West Perimeter 0:10:00 0.024 0.044 0.219 0.034 0.099 0.579 mg/m3

8/6/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/6/2020 Mobile Monitor 2

(Downwind)

0:10:07 0.015 0.027 0.382 0.018 0.036 0.664 mg/m3

8/6/2020 Mobile Monitor 3

(Upwind)

0:09:59 0.018 0.030 0.101 0.025 0.042 0.208 mg/m3

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

8/7/2020 East Perimeter 0:09:01 0.028 0.052 0.148 0.038 0.077 0.316 mg/m3

8/7/2020 North Perimeter 0:10:07 0.032 0.066 0.084 0.041 0.089 0.114 mg/m3

8/7/2020 South Perimeter 0:09:46 0.021 0.034 0.039 0.023 0.038 0.041 mg/m3

8/7/2020 West Perimeter 0:09:54 0.044 0.097 0.870 0.073 0.221 2.310 mg/m3 The 15-min max

for PM10

exceeded the

NAAQS from

12:58 to 13:13

8/7/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/7/2020 Mobile Monitor 2

(Downwind)

0:09:56 0.029 0.051 0.667 0.036 0.063 1.340 mg/m3

8/7/2020 Mobile Monitor 3

(Upwind)

0:09:49 0.029 0.076 0.233 0.039 0.103 0.352 mg/m3

8/8/2020 East Perimeter 0:06:20 NA 0.037 0.278 NA 0.062 0.627 mg/m3

8/8/2020 North Perimeter 0:05:57 NA 0.023 0.054 NA 0.035 0.109 mg/m3

8/8/2020 South Perimeter 0:06:06 NA 0.016 0.022 NA 0.021 0.042 mg/m3

8/8/2020 West Perimeter 0:06:24 NA 0.028 0.170 NA 0.050 0.304 mg/m3

8/8/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/8/2020 Mobile Monitor 2

(Downwind)

0:06:03 NA 0.066 0.284 NA 0.110 0.525 mg/m3

8/8/2020 Mobile Monitor 3

(Upwind)

0:06:08 NA 0.037 0.154 NA 0.070 0.343 mg/m3

8/10/2020 East Perimeter 0:09:54 0.035 0.055 0.080 0.039 0.059 0.146 mg/m3

8/10/2020 North Perimeter 0:09:41 0.039 0.048 0.143 0.048 0.077 0.294 mg/m3

8/10/2020 South Perimeter 0:09:28 0.033 0.046 0.076 0.038 0.059 0.121 mg/m3

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

8/10/2020 West Perimeter 0:09:22 0.041 0.056 0.258 0.055 0.096 0.588 mg/m3

8/10/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/10/2020 Mobile Monitor 2

(Downwind)

0:09:01 0.039 0.051 0.104 0.045 0.062 0.156 mg/m3

8/10/2020 Mobile Monitor 3

(Upwind)

0:09:30 0.038 0.059 0.108 0.048 0.078 0.227 mg/m3

8/11/2020 East Perimeter 0:09:13 0.009 0.023 0.122 0.011 0.024 0.183 mg/m3

8/11/2020 North Perimeter 0:11:13 0.012 0.022 0.058 0.017 0.040 0.121 mg/m3

8/11/2020 South Perimeter 0:10:38 0.010 0.023 0.024 0.012 0.024 0.037 mg/m3

8/11/2020 West Perimeter 0:11:09 0.015 0.032 0.092 0.023 0.057 0.213 mg/m3

8/11/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/11/2020 Mobile Monitor 2

(Downwind)

0:10:48 0.011 0.028 0.146 0.013 0.031 0.250 mg/m3

8/11/2020 Mobile Monitor 3

(Upwind)

0:10:37 0.014 0.031 0.058 0.020 0.038 0.123 mg/m3

8/12/2020 East Perimeter 0:09:14 0.015 0.045 0.084 0.020 0.060 0.123 mg/m3

8/12/2020 North Perimeter 0:09:59 0.023 0.059 0.092 0.033 0.082 0.157 mg/m3

8/12/2020 South Perimeter 0:09:44 0.018 0.064 0.106 0.022 0.090 0.163 mg/m3

8/12/2020 West Perimeter 0:09:38 0.013 0.032 0.176 0.020 0.074 0.489 mg/m3

8/12/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/12/2020 Mobile Monitor 2

(Downwind)

0:09:19 0.016 0.049 0.058 0.019 0.058 0.083 mg/m3

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

8/12/2020 Mobile Monitor 3

(Upwind)

0:09:39 0.025 0.115 0.427 0.037 0.168 1.070 mg/m3

8/13/2020 East Perimeter 0:09:51 0.018 0.027 0.055 0.024 0.040 0.113 mg/m3

8/13/2020 North Perimeter 0:10:27 0.024 0.042 0.082 0.034 0.070 0.132 mg/m3

8/13/2020 South Perimeter 0:09:56 0.015 0.025 0.031 0.017 0.028 0.038 mg/m3

8/13/2020 West Perimeter 0:10:29 0.025 0.038 0.112 0.037 0.074 0.306 mg/m3

8/13/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/13/2020 Mobile Monitor 2

(Downwind)

0:10:10 0.022 0.035 0.212 0.028 0.044 0.402 mg/m3

8/13/2020 Mobile Monitor 3

(Upwind)

0:10:31 0.025 0.050 0.145 0.038 0.103 0.339 mg/m3

8/14/2020 East Perimeter 0:08:58 0.020 0.044 0.116 0.029 0.073 0.241 mg/m3

North Perimeter 0:11:05 0.024 0.046 0.084 0.037 0.068 0.127 mg/m3

8/14/2020 South Perimeter 0:10:40 0.016 0.028 0.055 0.018 0.033 0.073 mg/m3

8/14/2020 West Perimeter 0:10:52 0.040 0.133 0.400 0.074 0.280 1.040 mg/m3

8/14/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/14/2020 Mobile Monitor 2

(Downwind)

0:10:48 0.020 0.038 0.366 0.026 0.051 0.792 mg/m3

8/14/2020 Mobile Monitor 3

(Upwind)

0:10:29 0.022 0.047 0.167 0.033 0.064 0.261 mg/m3

8/17/2020 East Perimeter 0:09:11 0.015 0.025 0.082 0.021 0.039 0.182 mg/m3

8/17/2020 North Perimeter 0:11:10 0.015 0.026 0.088 0.022 0.047 0.159 mg/m3

8/17/2020 South Perimeter 0:10:38 0.016 0.033 0.166 0.021 0.052 0.299 mg/m3

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

8/17/2020 West Perimeter 0:10:54 0.024 0.048 0.197 0.040 0.090 0.438 mg/m3

8/17/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/17/2020 Mobile Monitor 2

(Downwind)

0:10:36 0.015 0.022 0.071 0.019 0.028 0.140 mg/m3

8/17/2020 Mobile Monitor 3

(Upwind)

0:10:48 0.024 0.064 0.390 0.040 0.128 0.892 mg/m3

8/18/2020 East Perimeter 0:09:26 0.007 0.013 0.044 0.010 0.020 0.090 mg/m3

8/18/2020 North Perimeter 0:11:06 0.014 0.030 0.122 0.027 0.057 0.262 mg/m3

8/18/2020 South Perimeter 0:10:06 0.007 0.013 0.073 0.010 0.024 0.153 mg/m3

8/18/2020 West Perimeter 0:10:57 0.020 0.091 1.050 0.042 0.215 2.550 mg/m3 The 15-min max

for PM10

exceeded the

NAAQS from

15:05 to 15:20.

8/18/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/18/2020 Mobile Monitor 2

(Downwind)

0:10:47 0.011 0.022 0.358 0.019 0.042 0.747 mg/m3

8/18/2020 Mobile Monitor 3

(Upwind)

0:10:36 0.010 0.020 0.150 0.017 0.039 0.287 mg/m3

8/19/2020 East Perimeter 0:09:33 0.006 0.012 0.025 0.009 0.019 0.047 mg/m3

8/19/2020 North Perimeter 0:10:21 0.016 0.045 0.078 0.027 0.065 0.163 mg/m3

8/19/2020 South Perimeter 0:09:28 0.011 0.029 0.129 0.014 0.036 0.250 mg/m3

8/19/2020 West Perimeter 0:10:06 0.007 0.019 0.086 0.011 0.042 0.235 mg/m3

8/19/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

8/19/2020 Mobile Monitor 2

(Downwind)

0:10:09 0.015 0.054 0.102 0.021 0.067 0.187 mg/m3

8/19/2020 Mobile Monitor 3

(Upwind)

0:09:26 0.016 0.066 0.786 0.027 0.128 1.960 mg/m3

8/20/2020 East Perimeter 0:09:39 0.005 0.016 0.054 0.007 0.018 0.111 mg/m3

8/20/2020 North Perimeter 0:10:59 0.027 0.048 0.401 0.046 0.091 0.955 mg/m3

8/20/2020 South Perimeter 0:10:14 0.006 0.023 0.034 0.011 0.040 0.059 mg/m3

8/20/2020 West Perimeter 0:10:36 0.032 0.058 0.148 0.052 0.113 0.289 mg/m3

8/20/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/20/2020 Mobile Monitor 2

(Downwind)

0:10:24 0.020 0.048 0.101 0.028 0.067 0.206 mg/m3

8/20/2020 Mobile Monitor 3

(Upwind)

0:10:49 0.023 0.048 0.119 0.036 0.069 0.229 mg/m3

8/21/2020 East Perimeter 0:09:01 0.022 0.066 0.129 0.035 0.104 0.311 mg/m3

8/21/2020 North Perimeter 0:11:19 0.024 0.064 0.125 0.037 0.104 0.303 mg/m3

8/21/2020 South Perimeter 0:10:44 0.019 0.051 0.057 0.024 0.070 0.098 mg/m3

8/21/2020 West Perimeter 0:11:11 0.050 0.183 1.020 0.090 0.406 2.500 mg/m3The 15-min max

for PM2.5

exceeded that

NAAQS from

10:51 to 11:06,

and the 15-min

max for PM10

exceeded the

NAAQS erimeter

from 13:20 to

13:35.

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

8/21/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/21/2020 Mobile Monitor 2

(Downwind)

0:10:53 0.024 0.062 0.384 0.035 0.093 0.772 mg/m3

8/21/2020 Mobile Monitor 3

(Upwind)

0:11:21 0.026 0.069 0.093 0.039 0.107 0.166 mg/m3

8/22/2020 East Perimeter 0:08:20 0.024 0.060 0.062 0.028 0.069 0.066 mg/m3

8/22/2020 North Perimeter 0:08:08 0.026 0.061 0.096 0.033 0.074 0.141 mg/m3

8/22/2020 South Perimeter 0:08:08 0.020 0.050 0.056 0.022 0.052 0.094 mg/m3

8/22/2020 West Perimeter 0:08:01 NA 0.069 0.212 NA 0.092 0.503 mg/m3

8/22/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/22/2020 Mobile Monitor 2

(Downwind)

0:08:13 0.025 0.062 0.224 0.030 0.071 0.367 mg/m3

8/22/2020 Mobile Monitor 3

(Upwind)

0:08:11 0.030 0.159 2.120 0.045 0.418 5.860 mg/m3 The 15-min max

for PM2.5 and

PM10 exceeded

the NAAQS

from 12:29 to

12:44.

8/24/2020 East Perimeter 0:09:04 0.053 0.100 0.177 0.077 0.184 0.442 mg/m3

8/24/2020 North Perimeter 0:10:50 0.045 0.082 0.329 0.059 0.115 0.700 mg/m3

8/24/2020 South Perimeter 0:10:22 0.017 0.053 0.109 0.021 0.075 0.211 mg/m3

8/24/2020 West Perimeter 0:10:46 0.056 0.106 0.354 0.072 0.137 0.489 mg/m3

8/24/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

8/24/2020 Mobile Monitor 2

(Downwind)

0:10:34 0.043 0.110 0.356 0.052 0.150 0.684 mg/m3 The 15-min max

for PM10

exceeded the

NAAQS from

6:01 to 6:16.

8/24/2020 Mobile Monitor 3

(Upwind)

0:10:41 0.046 0.080 0.539 0.059 0.106 1.130 mg/m3

8/25/2020 East Perimeter 0:08:01 0.055 0.131 0.191 0.067 0.143 0.318 mg/m3

8/25/2020 North Perimeter 0:09:40 0.023 0.047 0.216 0.039 0.093 0.547 mg/m3

8/25/2020 South Perimeter 0:09:38 0.017 0.048 0.153 0.023 0.079 0.265 mg/m3

8/25/2020 West Perimeter 0:10:24 0.032 0.083 0.244 0.049 0.156 0.513 mg/m3 The 15-min max

for PM10

exceeded the

NAAQS from

6:16 to 6:31.

8/25/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/25/2020 Mobile Monitor 2

(Downwind)

0:09:41 0.027 0.100 0.752 0.042 0.159 1.710 mg/m3 the 15-min max

for PM10

exceeded the

NAAQS from

6:33 to 6:48.

8/25/2020 Mobile Monitor 3

(Upwind)

0:10:19 0.021 0.047 0.091 0.031 0.081 0.188 mg/m3

Date Location Duration

(days:hours:

minutes)

PM 2.5 8-Hr

TWA

PM 2.5 STEL

(Max)

PM 2.5 Daily Max

(Instantaneous)

PM 10 8-Hr

TWA

PM 10 STEL

(Max)

PM 10 Daily Max

(Instantaneous)

Units Notes

CRAWFORD POWER PLANT DEMOLITION

DAILY AIR MONITORING

August 2020

8/26/2020 East Perimeter 0:08:13 0.136 0.257 0.534 0.182 0.356 1.250 mg/m3

The 15-min max

for PM2.5

exceeded the

NAAQS from

8:08 to 8:23. The

8-hr max and 15-

min max for

PM10 exceeded

the NAAQS from

6:37 to 14:37

and 14:01 to

14:16,

respectively.

8/26/2020 North Perimeter 0:10:26 0.048 0.060 0.120 0.065 0.083 0.189 mg/m3

8/26/2020 South Perimeter 0:09:40 0.046 0.060 0.067 0.054 0.073 0.097 mg/m3

8/26/2020 West Perimeter 0:10:45 0.053 0.071 0.165 0.069 0.104 0.226 mg/m3

8/26/2020 Mobile Monitor 1 -- -- -- -- -- -- -- mg/m3

8/26/2020 Mobile Monitor 2

(Downwind)

0:11:30 0.045 0.058 0.120 0.052 0.068 0.226 mg/m3

8/26/2020 Mobile Monitor 3

(Upwind)

0:09:44 0.050 0.087 0.138 0.064 0.122 0.271 mg/m3

Notes:

mg/m3 = milligrams per cubic meter

NA = Not Applicable

NAAQS = National Ambient Air Quality Standards

STEL = Short-term exposure limit (15-minute duration)

TWA = Time-weighted average