Carter Carburetor Weekly Air Monitoring & Sampling Report February 15, 2016 - February 21, 2016 Carter Carburetor Daily Weather Conditions Monday 2/15/2016 Tuesday 2/16/2016 Wednesday 2/17/2016 Thursday 2/18/2016 Friday 2/19/2016 Saturday 2/20/2016 Sunday 2/21/2016 Temperature (range)1 42-29 41-33 50-36 61-35 77-49 78-48 59-40 Wind Speed (peak & average)2 12.1/4.3 17.0/6.9 15.0/5.4 33.1/15.0 42.9/14.8 21.9/6.0 23.0/9.6 Wind Direction (predominant) SE NW E SE SW NE N Precipitation (total)3 0.00 0.06 0.00 0.00 0.00 0.02 0.00 Carter Carburetor Daily Work Activities Site Activity Monday 2/15/2016 Tuesday 2/16/2016 Wednesday 2/17/2016 Thursday 2/18/2016 Friday 2/19/2016 Saturday 2/20/2016 Sunday 2/21/2016 Backfilling of Die Cast area excavation X Collection of scrap metal and rebar X X X X Dewatering of excavation area X X Die Cast area base inspected and approved X X Die Cast area material hauled off site X X X Excavation of Die Cast area X X X Processing of building rubble X X X X Scrap metal and rebar hauled off site X X X Daily Air Monitoring and Sampling Results Air Monitoring / Sampling Results - Station 1 LINC127 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/15/2016 Tuesday 2/16/2016 Wednesday 2/17/2016 Thursday 2/18/2016 Friday 2/19/2016 Saturday 2/20/2016 Sunday 2/21/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 89.8 92.4 46.6 41.4 18.8 27.6 26.5 Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1248 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1254 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1260 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Comments Laboratory sample collected on Thursday, 2/18/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report February 15, 2016 - February 21, 2016 Air Monitoring / Sampling Results - Station 2 LINC126 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/15/2016 Tuesday 2/16/2016 Wednesday 2/17/2016 Thursday 2/18/2016 Friday 2/19/2016 Saturday 2/20/2016 Sunday 2/21/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 62.1 64.5 31.3 27.0 13.3 17.7 16.8 Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0828 Aroclor -1248 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1254 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1260 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.00718 Comments Laboratory sample collected on Thursday, 2/18/2016. Air Monitoring / Sampling Results - Station 3 LINC 123 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/15/2016 Tuesday 2/16/2016 Wednesday 2/17/2016 Thursday 2/18/2016 Friday 2/19/2016 Saturday 2/20/2016 Sunday 2/21/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 82.4 85.9 42.0 40.9 17.4 24.1 22.6 Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.129 Aroclor -1248 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1254 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1260 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Comments Laboratory sample collected on Thursday, 2/18/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report February 15, 2016 - February 21, 2016 Air Monitoring / Sampling Results - Station 4 LINC128 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/15/2016 Tuesday 2/16/2016 Wednesday 2/17/2016 Thursday 2/18/2016 Friday 2/19/2016 Saturday 2/20/2016 Sunday 2/21/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 60.5 63.3 27.7 22.8 13.5 Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1248 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1254 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1260 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Comments Laboratory sample collected on Thursday, 2/18/2016. Real-time air monitoring equipment did not record data due to malfunction on Friday, 2/19/2019, and Saturday, 2/20/2016. Malfunction was corrected and real-time air monitoring resumed on Sunday, 2/21/2016. Air Monitoring / Sampling Results - Station 5 LINC 133 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/15/2016 Tuesday 2/16/2016 Wednesday 2/17/2016 Thursday 2/18/2016 Friday 2/19/2016 Saturday 2/20/2016 Sunday 2/21/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 105.1 108.4 56.1 52.5 27.1 35.1 33.6 Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0463 Aroclor -1248 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1254 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Aroclor -1260 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) ND Comments Laboratory sample collected on Thursday, 2/18/2016. Haze and dense fog caused the 1-hour TWA to exceed the action level on Monday, 2/15/2016. Legend: No shading - indicates TWA readings less than the applicable standard/action level Yellow shading - indicates a 1-hour TWA exceeded the applicable standard/action level, but the 24-hour TWA was below the standard/action level; initiate investigation Red shading - indicates the 24-hour TWA exceeded the applicable standard/action level; initiate corrective action Blue shading - indicates no data are available Aroclor - Monsanto mixture of polychlorinated biphenyl (PCB) congeners NAAQS - National Ambient Air Quality Standard ND - Not detected PCB-Polychlorinated biphenyl PMio - Particulate matter less than 10 microns in size TWA - Time-weighted average (average of data collected from 12:00 AM to 12:00 AM) Hg/m3 - Micrograms per cubic meter temperature reported in degrees Fahrenheit 2Wind speed reported in miles per hour 3 Precipitation reported in inches ------- Carter Carburetor Weekly Air Monitoring & Sampling Report February 15, 2016 - February 21, 2016 St. Louis City ir Station 5 Air Station 2 Weather Station m Hi Air Station 1 Legend ® Air station location Weatherstation ^ location Missouri Station Site Locator Station o Site Boundary| ------- |