Table 5.

TSP air-Mn^a in Marietta, OH^b: Comparison between traditional dispersion modeling, site-surface area method modeling, and rolling 5-yr long-term measured average

Monitoring Location	Facility-Specific Emissions Model	Site-Surface Area Emissions Method	Long-Termc Measured Average	Ratio of Measured/Facility-Specific Emissions Model Concentration	Ratio of Measured/Site-Surface Area Emissions Method Concentration
WCCCd	0.14	0.16e	0.16e	1.14	1.00
Harmar Village	0.16	0.18	0.11	0.69	0.61

Notes:

^aMn concentration in micrograms per cubic meter air (μg/m³).

^bThe site-surface area method averages shown here were calculated using the Washington Career Center as the reference monitor at this site.

^cThe long-term average includes the average of all monthly composite measurements at each site.

^dWCCC = Washington County Career Center.

^eNote that the site-surface area emissions method is perfectly correlated with the actual measured concentration because the WCCC monitor is the reference location in Marietta.