Carter Carburetor Weekly Air Monitoring & Sampling Report July 25, 2016 - July 31, 2016 Carter Carburetor Daily Weather Conditions Monday 7/25/2016 Tuesday 7/26/2016 Wednesday 7/27/2016 Thursday 7/28/2016 Friday 7/29/2016 Saturday 7/30/2016 Sunday 7/31/2016 Temperature (range)1 90-74 93-78 91-76 88-73 87-71 92-73 Wind Speed (peak & average)2 49.0/7.4 18.1/4.9 23.0/6.7 18.1/5.6 18.1/5.6 15.0/3.4 Wind Direction (predominant) W S NW NW NW E Precipitation (total)3 1.21 Trace 0.00 0.00 0.00 0.06 Carter Carburetor Daily Work Activities Site Activity Monday 7/25/2016 Tuesday 7/26/2016 Wednesday 7/27/2016 Thursday 7/28/2016 Friday 7/29/2016 Saturday 7/30/2016 Sunday 7/31/2016 Sub-slab sampling of CBI building by HRP for PCBs X X X X Sub-slab sampling of CBI building by HRP for VOCs X Daily Air Monitoring and Sampling Results Air Monitoring / Sampling Results - Station 1 LINC124 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 7/25/2016 Tuesday 7/26/2016 Wednesday 7/27/2016 Thursday 7/28/2016 Friday 7/29/2016 Saturday 7/30/2016 Sunday 7/31/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 20.7 22.7 26.7 23.1 16.8 15.9 19.3 Comments Air Monitoring / Sampling Results - Station 2 LINC 126 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 7/25/2016 Tuesday 7/26/2016 Wednesday 7/27/2016 Thursday 7/28/2016 Friday 7/29/2016 Saturday 7/30/2016 Sunday 7/31/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 9.0 10.1 12.1 10.3 5.9 5.5 7.7 Comments Air Monitoring / Sampling Results - Station 3 LINC 123 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 7/25/2016 Tuesday 7/26/2016 Wednesday 7/27/2016 Thursday 7/28/2016 Friday 7/29/2016 Saturday 7/30/2016 Sunday 7/31/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 8.2 9.8 12.1 10.1 5.7 5.0 6.8 Comments 30286492 ------- Carter Carburetor Weekly Air Monitoring & Sampling Report July 25, 2016 - July 31, 2016 Air Monitoring / Sampling Results - Station 4 LINC128 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 7/25/2016 Tuesday 7/26/2016 Wednesday 7/27/2016 Thursday 7/28/2016 Friday 7/29/2016 Saturday 7/30/2016 Sunday 7/31/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 10.0 11.5 13.8 11.7 6.1 6.3 8.3 Comments Air Monitoring / Sampling Results - Station 5 LINC 133 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 7/25/2016 Tuesday 7/26/2016 Wednesday 7/27/2016 Thursday 7/28/2016 Friday 7/29/2016 Saturday 7/30/2016 Sunday 7/31/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 41.8 43.5 48.7 44.8 36.0 36.4 38.7 Comments 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 NAAQS - National Ambient Air Quality Standard PCB-Polychlorinated biphenyl PM io — Particulate matter less than 10 microns in size TWA - Time-weighted average (average of data collected from 12:00 AM to 12:00 AM) VOC - Volatile organic compound Hg/m3 - Micrograms per cubic meter 1 Temperature reported in degrees Fahrenheit 2Wind speed reported in miles per hour 3 Precipitation reported in inches ------- Carter Carburetor Weekly Air Monitoring & Sampling Report July 25, 2016-July 31, 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| ------- |