Carter Carburetor Weekly Air Monitoring & Sampling Report February 29, 2016 - March 06, 2016 Carter Carburetor Daily Weather Conditions Monday 2/29/2016 Tuesday 3/01/2016 Wednesday 3/02/2016 Thursday 3/03/2016 Friday 3/04/2016 Saturday 3/05/2016 Sunday 3/06/2016 Temperature (range)1 70-38 56-28 44-23 49-39 43-37 57-33 63-31 Wind Speed (peak & average)2 21.9/9.6 38.0/13.6 25.9/8.1 21.0/8.7 18.1/6.7 25.9/7.6 23.9/10.5 Wind Direction (predominant) SW W SE N SE N SE Precipitation (total)3 0.00 Trace 0.00 0.05 0.00 0.00 0.01 Carter Carburetor Daily Work Activities Site Activity Monday 2/29/2016 Tuesday 3/01/2016 Wednesday 3/02/2016 Thursday 3/03/2016 Friday 3/04/2016 Saturday 3/05/2016 Sunday 3/06/2016 Backfilling of Die Cast excavation area X X X X Collection of rebar and scrap metal X X Die Cast area excavation footprint inspected and approved for backfill X X X Die Cast material hauled off site X X X X X Decontamination of water treatment storage tanks X X Excavation of Die Cast area X X X X X Processing of building rubble 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 2/29/2016 Tuesday 3/01/2016 Wednesday 3/02/2016 Thursday 3/03/2016 Friday 3/04/2016 Saturday 3/05/2016 Sunday 3/06/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 16.2 21.6 22.6 37.4 76.8 53.7 27.5 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 lllllllllllllllllllllllll llllllllllllllllllllllll Comments Laboratory sample collected Tuesday, 3/01/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report February 29, 2016 - March 06, 2016 Air Monitoring / Sampling Results - Station 2 LINC126 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/29/2016 Tuesday 3/01/2016 Wednesday 3/02/2016 Thursday 3/03/2016 Friday 3/04/2016 Saturday 3/05/2016 Sunday 3/06/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 10.0 12.9 13.2 24.5 52.6 35.9 18.1 Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.133 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 Tuesday, 3/01/2016. Air Monitoring / Sampling Results - Station 3 LINC 123 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/29/2016 Tuesday 3/01/2016 Wednesday 3/02/2016 Thursday 3/03/2016 Friday 3/04/2016 Saturday 3/05/2016 Sunday 3/06/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 13.4 17.7 18.0 33.3 69.2 48.3 24.0 Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.0301 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 Tuesday, 3/01/2016. ------- Carter Carburetor Weekly Air Monitoring & Sampling Report February 29, 2016 - March 06, 2016 Air Monitoring / Sampling Results - Station 4 LINC128 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/29/2016 Tuesday 3/01/2016 Wednesday 3/02/2016 Thursday 3/03/2016 Friday 3/04/2016 Saturday 3/05/2016 Sunday 3/06/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 4.4 8.0 8.5 20.0 52.3 32.7 13.7 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 Tuesday, 3/01/2016. Air Monitoring / Sampling Results - Station 5 LINC 133 Results reported in |ig/m3) Parameter Type of Analysis Standard / Action Level Monday 2/29/2016 Tuesday 3/01/2016 Wednesday 3/02/2016 Thursday 3/03/2016 Friday 3/04/2016 Saturday 3/05/2016 Sunday 3/06/2016 PMio (24-hour TWA) Real- time 150 ng/m3 (NAAQS) 25.5 30.7 32.3 49.3 91.9 65.8 38.2 Aroclor -1242 (in air sample) Lab 30.7 Hg/m3 (EPA Region 7) 0.137 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 Tuesday, 3/01/2016. 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 29, 2016 - March 06, 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| ------- |