Carter Carburetor Weekly Air Monitoring & Sampling Report May 02, 2016 - May 08, 2016 Carter Carburetor Daily Weather Conditions Monday 5/02/2016 Tuesday 5/03/2016 Wednesday 5/04/2016 Thursday 5/05/2016 Friday 5/06/2016 Saturday 5/07/2016 Sunday 5/08/2016 Temperature (range)1 80-55 85-64 86-68 85-67 87-67 86-68 77-66 Wind Speed (peak & average)2 21.0/5.8 19.9/7.4 35.1/12.8 28.0/8.5 19.9/6.3 51.0/9.4 25.9/9.2 Wind Direction (predominant) NW SW NW N W NW E Precipitation (total)3 0.00 Trace 0.01 Trace 0.00 Trace 0.30 Carter Carburetor Daily Work Activities Site Activity Monday 5/02/2016 Tuesday 5/03/2016 Wednesday 5/04/2016 Thursday 5/05/2016 Friday 5/06/2016 Saturday 5/07/2016 Sunday 5/08/2016 Backfill Die Cast excavation area X X Dewatering of excavation area X X X X Die Cast area excavation footprint inspection and approval for backfill X X Die Cast area material hauled off site X Excavation of Die Cast area X X X Processing of building rubble X X X Removal of CBI slab X X Scrap metal hauled off site 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 5/02/2016 Tuesday 5/03/2016 Wednesday 5/04/2016 Thursday 5/05/2016 Friday 5/06/2016 Saturday 5/07/2016 Sunday 5/08/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0226 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, 5/04/2016. Viper deployment (real-time air monitoring) down at all air stations Monday, 5/02/2016, through Sunday, 5/08/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report May 02, 2016 - May 08, 2016 Air Monitoring / Sampling Results - Station 2 LINC126 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/02/2016 Tuesday 5/03/2016 Wednesday 5/04/2016 Thursday 5/05/2016 Friday 5/06/2016 Saturday 5/07/2016 Sunday 5/08/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0867 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, 5/04/2016. Viper deployment (real-time air monitoring) down at all air stations Monday, 5/02/2016, through Sunday, 5/08/2016. Air Monitoring / Sampling Results - Station 3 LINC 123 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/02/2016 Tuesday 5/03/2016 Wednesday 5/04/2016 Thursday 5/05/2016 Friday 5/06/2016 Saturday 5/07/2016 Sunday 5/08/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 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, 5/04/2016. Viper deployment (real-time air monitoring) down at all air stations Monday, 5/02/2016, through Sunday, 5/08/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report May 02, 2016 - May 08, 2016 Air Monitoring / Sampling Results - Station 4 LINC128 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/02/2016 Tuesday 5/03/2016 Wednesday 5/04/2016 Thursday 5/05/2016 Friday 5/06/2016 Saturday 5/07/2016 Sunday 5/08/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.00564 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, 5/04/2016. Viper deployment (real-time air monitoring) down at all air stations Monday, 5/02/2016, through Sunday, 5/08/2016. Air Monitoring / Sampling Results - Station 5 LINC 133 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/02/2016 Tuesday 5/03/2016 Wednesday 5/04/2016 Thursday 5/05/2016 Friday 5/06/2016 Saturday 5/07/2016 Sunday 5/08/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.101 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, 5/04/2016. Viper deployment (real-time air monitoring) down at all air stations Monday, 5/02/2016, through Sunday, 5/08/2016. 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 TWA - Time-weighted average (average of data collected from 12:00 AM to 12:00 AM) NAAQS - National Ambient Air Quality Standard Hg/m3 - Micrograms per cubic meter ND - Not detected temperature reported in degrees Fahrenheit PCB - Polychlorinated biphenyl 2 wind sPeed reported in miles per hour PMio - Particulate matter less than 10 microns in size 3 Precipitation reported in inches ------- Carter Carburetor Weekly Air Monitoring & Sampling Report May 02, 2016 - May 08, 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| ------- |