3. "For the past 30 years, zinc ore (Zn) has been exploited from the Padaeng deposit in Mae Sot District, Tak Province, Northwestern Thailand. Two Zn mines were operated; the first is no longer active, while the second is owned and operated by the Padaeng Industry Public Company Limited. It is the largest Zn mine in Southeast Asia, with an overall production capacity of 110,000 metric tons of Zn metal per year. The mining activities generated a large amount of waste and tailings, resulting in heavy metal contamination of the soils and water. Since 2003 it was found that paddy fields receiving irrigation from the Mae Tao and Mae Ku creeks passing through the Zn deposit area contained elevated Cd and Zn levels [5]. It was reported that 1,600 m2 of paddy fields at the Mae Sot District were contaminated with Cd and Zn [3]. Soil total Cd and Zn in Thailand ranges from 0.01 to 1.3 mg Cd kg-1 [12] and 5 to 158 mg Zn kg1 [13] with a mean value of 0.03 mg Cd kg-1 and 45 mg Zn kg-1 , respectively [12, 13]. However, soil samples from agricultural areas around the Pha Te village, the Mae Sot District, have total soil Cd and Zn concentrations ranging from 0.63 to 30.4 mg Cd kg-1 and 14.4 to 594 mg Zn kg-1 , respectively. The upperpaddy soils that receive irrigation water through a canal from the Mae Tao creek and that flow into the lower-paddy soils showed high Cd and Zn concentrations (5.93 to 30.4 mg Cd kg-1 and 286 to 594 mg Zn kg-1 , respectively) [10]. Mae Tao creek originates in the mountains of Northwestern Thailand and is directly influenced by mining activities. (Akkajit, 2015)"According to this information, if you are environmental scientist who is in charge of the soil pollutants assessment project in this area 1,600 m2, what are your plans for planning, sampling, and conducting in the lab? What results do you expect? Explain step by step and details. (8%)