Carter Carburetor Weekly Air Monitoring & Sampling Report May 16, 2016 - May 22, 2016 Carter Carburetor Daily Weather Conditions Monday 5/16/2016 Tuesday 5/17/2016 Wednesday 5/18/2016 Thursday 5/19/2016 Friday 5/20/2016 Saturday 5/21/2016 Sunday 5/22/2016 Temperature (range)1 59-50 54-49 69-49 72-48 73-58 78-52 84-55 Wind Speed (peak & average)2 21.9/9.2 21.9/9.0 19.9/5.6 16.1/4.5 21.0/5.6 21.9/6.5 15.0/4.0 Wind Direction (predominant) S NE N E E N NE Precipitation (total)3 0.37 0.51 0.00 0.00 0.01 0.00 0.00 Carter Carburetor Daily Work Activities Site Activity Monday 5/16/2016 Tuesday 5/17/2016 Wednesday 5/18/2016 Thursday 5/19/2016 Friday 5/20/2016 Saturday 5/21/2016 Sunday 5/22/2016 Asbestos abatement of pipe in CBI slab X X X Backfilling of excavation area X X X Decontamination of franc tank X Dewatering pipe conduit to access ACM X X X Die Cast area and slab material hauled off site X Making rubble piles for sampling X Processing of building rubble X X X X Removal of CBI slab X X X X Slug testing of monitoring wells 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 5/16/2016 Tuesday 5/17/2016 Wednesday 5/18/2016 Thursday 5/19/2016 Friday 5/20/2016 Saturday 5/21/2016 Sunday 5/22/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0151 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, 5/19/2016. Real-time air monitoring deployment was down Monday, 5/16/2016, through Sunday, 5/22/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report May 16, 2016 - May 22, 2016 Air Monitoring / Sampling Results - Station 2 LINC126 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/16/2016 Tuesday 5/17/2016 Wednesday 5/18/2016 Thursday 5/19/2016 Friday 5/20/2016 Saturday 5/21/2016 Sunday 5/22/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.124 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, 5/19/2016. Real-time air monitoring deployment was down Monday, 5/16/2016, through Sunday, 5/22/2016. Air Monitoring / Sampling Results - Station 3 LINC 123 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/16/2016 Tuesday 5/17/2016 Wednesday 5/18/2016 Thursday 5/19/2016 Friday 5/20/2016 Saturday 5/21/2016 Sunday 5/22/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0214 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, 5/19/2016. Real-time air monitoring deployment was down Monday, 5/16/2016, through Sunday, 5/22/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report May 16, 2016 - May 22, 2016 Air Monitoring / Sampling Results - Station 4 LINC128 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/16/2016 Tuesday 5/17/2016 Wednesday 5/18/2016 Thursday 5/19/2016 Friday 5/20/2016 Saturday 5/21/2016 Sunday 5/22/2016 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, 5/19/2016. Real-time air monitoring deployment was down Monday, 5/16/2016, through Sunday, 5/22/2016. Air Monitoring / Sampling Results - Station 5 LINC 133 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 5/16/2016 Tuesday 5/17/2016 Wednesday 5/18/2016 Thursday 5/19/2016 Friday 5/20/2016 Saturday 5/21/2016 Sunday 5/22/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0639 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, 5/19/2016. Real-time air monitoring deployment was down Monday, 5/16/2016, through Sunday, 5/22/2016. 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 ACM - Asbestos containing material TWA - Time-weighted average (average of data collected from 12:00 AM to 12:00 AM) Aroclor - Monsanto mixture of polychlorinated biphenyl (PCB) congeners Hg/m3 - Micrograms per cubic meter NAAQS - National Ambient Air Quality Standard temperature reported in degrees Fahrenheit ND - Not detected 2 Wind speed reported in miles per hour PCB-Polychlorinated biphenyl 3 Precipitation reported in inches PM io — Particulate matter less than 10 microns in size ------- Carter Carburetor Weekly Air Monitoring & Sampling Report May 16, 2016 - May 22, 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| ------- |