This study will intend to know how significant the effectiveness of the Ectohydric Moss (Thuidium tamariscellum) as an alternative atmospheric detector of industrialized lead in the three stations along the business center in Dagupan City.
Specifically, it will intend to answer the following:
1. Determine the effectiveness of Ectohydric Moss (Thuidium tamariscellum) as an atmospheric lead detector
2. Determine which station will have the most number of lead particulate in the air
3. Compare the amount of lead particulate in each of the three stations along the business center in Dagupan City.

B. Hypotheses
1. Ha = Ectohydric Moss (Thuidium tamariscellum) will be an effective atmospheric detector of industrialized lead.
H0 = Ectohydric Moss (Thuidium tamariscellum) will not be an effective atmospheric detector of industrialized lead.
2. Ha = There will be a significant difference in the stations that will have the most number of lead
H0 = There will be no significant difference in the stations that will have the most number of lead+
3. Ha = There will be a significant difference in the amount of lead particulate in the three different stations along the business center in Dagupan City
H0 = There will be no significant difference in the amount of lead particulate in the three different stations along the business center in Dagupan City