Demolition Project at 3200 S. Kedzie and 3315-45 W. 31st Street
Air Quality Monitoring and Reporting


True North Consultants, Inc. has been retained on behalf of Chicago Southwest Development Corporation to provide independent third-party air quality monitoring during the demolition of structures located at the southwest corner of W. 31st Street and S. Kedzie Avenue. Air quality monitoring is being performed to evaluate the levels of airborne particulates present during demolition-related activities. The gathered data has been collected and reviewed to verify that adequate controls are in place to protect the surrounding community and to evaluate compliance with applicable regulatory requirements. The results of monitoring will be documented in the daily summary reports and provided at the following link: https://www.consulttruenorth.com/services/csdc-air-quality-reporting/

Air quality monitoring will be performed at a total of four (4) locations during active demolition activities representative of both upwind and downwind particulate matter concentrations. One (1) monitor will be located along the north site perimeter, one (1) monitor will be placed along the south site perimeter, one (1) monitor will be placed along the east site perimeter, and one (1) monitor will be placed along the west site perimeter. The exact monitoring locations will be adjusted along each of the perimeters to ensure that we are continuously monitoring at least one upwind and downwind location.

Equipment Used: Air quality monitoring will be performed at a total four (4) locations during active demolition activities representative of both upwind and downwind particulate matter concentrations. One (1) monitor will be located along the north site perimeter, one (1) monitor will be placed along the south site perimeter, one (1) monitor will be placed along the east site perimeter, and one (1) monitor will be placed along the west site perimeter. The exact monitoring locations will be adjusted along each of the perimeters to ensure that we are continuously monitoring at least one upwind and downwind location.

Air quality monitors will be programmed with a visual alarm which will notify onsite personnel if PM10 concentrations exceed 100 micrograms per cubic meter over a 15-minute period. The contractor will be notified within 15 minutes of the event taking place. The contractor will be responsible for taking mitigating action to reduce PM to a level below 150 micrograms per cubic meter at the downwind monitoring location within one hour.

PM10 data from monitors will be recorded using one-minute monitoring intervals. Monitoring will be performed for the duration of active demolition and excavation activities and monitoring data will be downloaded daily. A daily summary report of data will be uploaded to a community-accessible web page on a daily basis. Data download reports will be maintained for the duration of the project and will be provided to the CDPH, upon request, in excel or CSV within 1 day of sampling including upwind, downwind, wind speed, direction, and timestamp listed for each hour.

In the event of instrumentation outage, the consultant will notify CDPH by emailing CDPHpermits@cityofchiago.org within 2 hours of outage’s discovery. If CDPH personnel are onsite, the consultant will notify CDPH personnel.

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