Alternate Techniques. 1. For the circuit rider system, an instrumental system such as the DustTrak by TSI could be used for continuous particle data for PM2.5 and PM10. These systems provide optical light scattering measurements of the concentration in mg/m3 and cost about $5,000 per point including an environmental shelter.
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Samples: Protection Agency, www.govinfo.gov, www.epa.gov
