Carter Carburetor Weekly Air Monitoring & Sampling Report February 08, 2016 - February 14, 2016 Carter Carburetor Daily Weather Conditions Monday 2/08/2016 Tuesday 2/09/2016 Wednesday 2/10/2016 Thursday 2/11/2016 Friday 2/12/2016 Saturday 2/13/2016 Sunday 2/14/2016 Temperature (range)1 40-23 26-19 24-15 32-23 33-18 24-11 31-22 Wind Speed (peak & average)2 38.9/18.3 31.1/14.5 28.0/8.5 15.0/5.8 29.1/10.3 23.0/7.6 28.0/11.4 Wind Direction (predominant) W NW NW SE NW N SE Precipitation (total)3 Trace 0.01 0.06 Trace 0.03 0.00 0.16 Carter Carburetor Daily Work Activities Site Activity Monday 2/08/2016 Tuesday 2/09/2016 Wednesday 2/10/2016 Thursday 2/11/2016 Friday 2/12/2016 Saturday 2/13/2016 Sunday 2/14/2016 Collection of scrap metal and rebar X X X X X Dewatering of the excavation area X Die Cast area material hauled off site X Excavation of Die Cast area X Processing of building rubble X X 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 2/08/2016 Tuesday 2/09/2016 Wednesday 2/10/2016 Thursday 2/11/2016 Friday 2/12/2016 Saturday 2/13/2016 Sunday 2/14/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 14.9 20.2 20.5 27.0 31.5 17.4 26.8 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 Wednesday, 2/10/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report February 08, 2016 - February 14, 2016 Air Monitoring / Sampling Results - Station 2 LINC126 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/08/2016 Tuesday 2/09/2016 Wednesday 2/10/2016 Thursday 2/11/2016 Friday 2/12/2016 Saturday 2/13/2016 Sunday 2/14/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 7.2 10.7 10.9 17.0 18.7 9.5 16.6 Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0527 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 Wednesday, 2/10/2016. Air Monitoring / Sampling Results - Station 3 LINC 123 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/08/2016 Tuesday 2/09/2016 Wednesday 2/10/2016 Thursday 2/11/2016 Friday 2/12/2016 Saturday 2/13/2016 Sunday 2/14/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 10.5 14.3 14.0 20.3 24.1 12.1 21.1 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 Wednesday, 2/10/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report February 08, 2016 - February 14, 2016 Air Monitoring / Sampling Results - Station 4 LINC128 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/08/2016 Tuesday 2/09/2016 Wednesday 2/10/2016 Thursday 2/11/2016 Friday 2/12/2016 Saturday 2/13/2016 Sunday 2/14/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 3.8 6.8 6.7 12.7 14.6 5.7 11.5 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 Wednesday, 2/10/2016. Air Monitoring / Sampling Results - Station 5 LINC 133 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/08/2016 Tuesday 2/09/2016 Wednesday 2/10/2016 Thursday 2/11/2016 Friday 2/12/2016 Saturday 2/13/2016 Sunday 2/14/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 21.4 26.8 27.2 35.5 38.4 26.3 35.7 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 Wednesday, 2/10/2016. 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) iag/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 08, 2016 - February 14, 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| ------- |