Shell Engineering - Ambient Air Monitoring & Modelling Services
We provide turn-key ambient air monitoring and modelling for major source reviews, as well as other types of air quality sensors and use of predictive calculations for a variety of regulatory and operational purposes.
Services Details
Regulatory | Complaint-Driven | Troubleshooting
- Screening “nomographs” to quickly check allowable production with a variety of operating parameters and controls – required for construction industries: quarries, ready-mix, asphalt.
- Dispersion modelling is required for certain major sources and from other regulations.
- Other types of air transport equations are modelled. For example, US EPA and State regulatory codes are beginning to require Fenceline Monitoring for various pollutants, and use of air transport modelling equations for any resulting Root Cause Analysis and Corrective Action Plans.
Typical Air Monitoring Services
- Criteria pollutants – TSP, H2S, SO2, NO2, CO, PM, Ozone, Lead.
- Meteorological Data – Typical parameters include temperature, humidity, rainfall, radiation, evaporation, wind speed, wind direction and Sigma Theta.
- Non-criteria air toxics, metals and volatile organics (TO – 1 through TO -15 methods, NIOSH/OSHA methods)
Specific Air Modelling Services Include
- Determining impact of existing and new sources and assistance in obtaining necessary permits.
- Use of the EPA GEP guidelines to determine best location and height for a new stack.
- Determining possible methods of control and their effect on potential impact.
- Determining impact due to fuel switching (coal/gas/fuel oil).
- Determining impact of changing stack height, flow rates or temperature.
- Determining impact of new standards such as a one hour SO2 standard.
- Statistically correlating monitoring data to modeling data and determining trend analysis (actual data to predicted data).
- Use of dispersion modeling to select monitoring site locations through the execution of EPA guideline models.
- Determining possible site locations for new facilities