Table 1 Community Continuous Air Monitoring Results East Palestine Derailment Site East Palestine, Columbiana County, Ohio Monitoring Period: 03/09/2023 00:00 through 03/10/2023 11:27 Air Monitering Instrument: Serial Number Analyte Screening Level1 Screening Level Exceeded? 8-hour Period Concentration Range Average of All 8-hour Periods 8533230503 PM2 5 (mg/m3) 0.035 mg/m3 No 0.009 to 0.019 0.013 PM10 (mg/m3) 0.035 mg/m3 No 0.012 to 0.03 0.021 8533230504 PM2 5 (mg/m3) 0.035 mg/m3 No 0.001 to 0.028 0.01 PM10 (mg/m3) 0.035 mg/m3 No 0.003 to 0.029 0.012 8533230702 PM2 5 (mg/m3) 0.035 mg/m3 No 0.005 to 0.031 0.014 PM10 (mg/m3) 0.035 mg/m3 No 0.011 to 0.034 0.021 W01A00002173 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01A00002175 VOC (ppm) 0.5 ppm No 0.00 to 0.01 0.00 CO (ppm) 9 ppm No 0.00 to 0.41 0.12 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01A00002181 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 3.16 1.27 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01A00002182 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01A00002185 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm Yes 0.00 to 9.27 3.17 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01B00002162 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01B00002164 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01B00002170 VOC (ppm) 0.5 ppm No 0.00 to 0.0 0.00 CO (ppm) 9 ppm No 0.00 to 0.01 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 HCN (ppm) 1 ppm No 0.00 to 0.00 0.00 ------- Table 1 Community Continuous Air Monitoring Results East Palestine Derailment Site East Palestine, Columbiana County, Ohio Monitoring Period: 03/09/2023 00:00 through 03/10/2023 11:27 Air Monitering Instrument: Serial Number Analyte Screening Level1 Screening Level Exceeded? 8-hour Period Concentration Range Average of All 8-hour Periods W01B00002172 VOC (ppm) 0.5 ppm No 0.00 to 0.0 0.00 CO (ppm) 9 ppm No 0.00 to 0.02 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 HCN (ppm) 1 ppm No 0.00 to 0.00 0.00 W01B00002181 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01B00002183 VOC (ppm) 0.5 ppm No 0.00 to 0.01 0.00 CO (ppm) 9 ppm No 0.00 to 0.0 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.28 0.09 HCN (ppm) 1 ppm No 0.00 to 0.00 0.00 W01B00002206 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01B00002208 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01B00002220 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 W01B00002221 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 W01B00002222 VOC (ppm) 0.5 ppm No 0.00 to 0.04 0.01 CO (ppm) 9 ppm No 0.00 to 0.01 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 LEL (%) >5% No 0.00 to 0.00 0.00 HCN (ppm) 1 ppm No 0.00 to 0.00 0.00 W01B00002223 VOC (ppm) 0.5 ppm No 0.00 to 0.00 0.00 CO (ppm) 9 ppm No 0.00 to 0.00 0.00 H2S (ppm) 0.1 ppm No 0.00 to 0.00 0.00 ------- Table 1 Community Continuous Air Monitoring Results East Palestine Derailment Site East Palestine, Columbiana County, Ohio Monitoring Period: 03/09/2023 00:00 through 03/10/2023 11:27 Notes: Site-Specific Action Level stated in the Tetra Tech Air Monitoring and Sampling Plan. Air monitoring measurements have been averaged over a 8-hour time period and summarized above. Air monitoring is not performed during inclement weather conditions/rain and thunderstorms. Abbreviations: < - Less than > - Greater than % - Percent CO - Carbon Monoxide H2S - Hydrogen Sulfide HCN - Hydrogen Cyanide LEL - Lower Explosive Limit 02 - Oxygen ppm - Parts per million S/N - Serial number VOC - Volatile organic compound We are in the process of ensuring this document is accessible to all audiences. If you need assistance accessing this document, or any materials on the EPA East Palestine, Ohio emergency response webpages, please contact the Region 5 Public Information Officer on-call r5_eastpalestine@epa.gov ------- x Gould ¦ Pond W01B00Q02223 WOIBOOO •W01'B00002208 W01A00002181 W01B00.002206 W01'A00002'185: 853323P503fc( W01B00002220 ltW01A00002175; :woi'AgoooW8a 8513280505! WO®00g2Jg^f^Q1AOQQg2173^. W01B000022|i M B - 8533i^702-«" X WMMMMMM WO"i'BM002WO W01B00002l8i Plot for [YNG1 YOUNGS-OWN Generated: 10 Mar 2023 East Palestine ^ i ~ Cemetery E PalS M Jfat yd j. tm QE I j 1 s nm %.x,s & fU K 1 I Jimtown 1 Summary Obs Used; 35 Obs Without Wind: 2 Avg Speed: 7.3 mph Reference Map Legend 0 Continuous Air Monitoring Locations with DustTrak [¦"] Continuous Air Monitoring Locations h Derailment Location One Mile Radius Miles East Palestine Derailment ER Site East Palestine, Columbiana County, OH 44413 Figure 1 Continuous Air Monitoring Community Stations TETRA TECH Prepared For: EPA Prepared By: TetraTech Inc. Date Saved: 3/10/2023 ------- |