Carter Carburetor Weekly Air Monitoring & Sampling Report May 30, 2016 - June 05, 2016 Carter Carburetor Daily Weather Conditions Monday 5/30/2016 Tuesday 5/31/2016 Wednesday 6/01/2016 Thursday 6/02/2016 Friday 6/03/2016 Saturday 6/04/2016 Sunday 6/05/2016 Temperature (range)1 91-67 85-70 86-69 87-69 79-67 83-69 80-65 Wind Speed (peak & average)2 23.0/3.6 23.0/5.8 19.9/3.8 17.0/4.5 14.1/4.9 17.0/6.3 23.9/11.4 Wind Direction (predominant) S SW SW NE SE W NW Precipitation (total)3 Trace Trace 0.09 0.00 Trace 0.24 0.00 Carter Carburetor Daily Work Activities Site Activity Monday 5/30/2016 Tuesday 5/31/2016 Wednesday 6/01/2016 Thursday 6/02/2016 Friday 6/03/2016 Saturday 6/04/2016 Sunday 6/05/2016 Backfilling Die Cast excavation area X X Making rubble piles X X Memorial Day - no site work X No major site activities X X Processing of building rubble X X Removal of CBI slab 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 5/30/2016 Tuesday 5/31/2016 Wednesday 6/01/2016 Thursday 6/02/2016 Friday 6/03/2016 Saturday 6/04/2016 Sunday 6/05/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0149 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 Thursday, 6/02/2016. Viper real-time air monitoring deployment down at all air stations Monday, 5/30/2016, through Sunday, 6/05/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report May 30, 2016 - June 05, 2016 Air Monitoring / Sampling Results - Station 2 LINC126 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/30/2016 Tuesday 5/31/2016 Wednesday 6/01/2016 Thursday 6/02/2016 Friday 6/03/2016 Saturday 6/04/2016 Sunday 6/05/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0756 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 Thursday, 6/02/2016. Viper real-time air monitoring deployment down at all air stations Monday, 5/30/2016, through Sunday, 6/05/2016. Air Monitoring / Sampling Results - Station 3 LINC 123 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/30/2016 Tuesday 5/31/2016 Wednesday 6/01/2016 Thursday 6/02/2016 Friday 6/03/2016 Saturday 6/04/2016 Sunday 6/05/2016 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 Thursday, 6/02/2016. Viper real-time air monitoring deployment down at all air stations Monday, 5/30/2016, through Sunday, 6/05/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report May 30, 2016 - June 05, 2016 Air Monitoring / Sampling Results - Station 4 LINC128 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/30/2016 Tuesday 5/31/2016 Wednesday 6/01/2016 Thursday 6/02/2016 Friday 6/03/2016 Saturday 6/04/2016 Sunday 6/05/2016 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 Thursday, 6/02/2016. Viper real-time air monitoring deployment down at all air stations Monday, 5/30/2016, through Sunday, 6/05/2016. Air Monitoring / Sampling Results - Station 5 LINC 133 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/30/2016 Tuesday 5/31/2016 Wednesday 6/01/2016 Thursday 6/02/2016 Friday 6/03/2016 Saturday 6/04/2016 Sunday 6/05/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0624 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 Thursday, 6/02/2016. Viper real-time air monitoring deployment down at all air stations Monday, 5/30/2016, through Sunday, 6/05/2016. 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 30, 2016 - June 05, 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| ------- |