Standard》（GB3838-2002）, Ant and Peony River followed Class III Surface Water 《Ground Environment Quality Standard》（GB3838-2002） In 2009, Fangzheng Environment Survey Station monitored the water quality at the Entrance of Mayi River, getting the results as in the table follow: Mayi River Water Quality Survey Results in 2009 Table (mg/l) Potassium Biochemical Chemical Statistical Dissolved Ammonia Volatile PH Permanganate Oxygen Oxygen Items Oxygen Nitrogen Phenols Index Demand Demand Not Quarter 1 7.9 9.65 4.06 3.51 11.4 0.25 checked Not Quarter 2 7.9 10.9 4.1 4.25 10.3 0.17 checked Quarter 3 Not 7.3 7.36 6.8 2.00 13.07 0.32 checked Quarter 4 Not 7.70 10.4 5.84 1.42 12.3 0.37 checked Arithmetic Not 7.7 9.5775 5.2 2.795 11.7675 0.2775 mean checked Standard 6~9 5 6 4 20 1.0 0.005 Clall Ⅲ The table revealed that the water quality at Mayi River all met the ground water environment quality standard Class III. Yilan Survey Station monitored the water quality in , getting the results as in the table follow: Table Mudan River Water Quality Survey Resuls (mg/l) Potassium Biochemical Chemical Volatile Statistical Dissolved Ammonia PH Permanganate Oxygen Oxygen Items Oxygen nitrogen Index Demand Demand Phenols Jan. 7.46 11.62 4.59 2.39 11.3 0.128 0.001 Feb. 7.36 9.69 4.32 1.00 12.12 0.162 0.001 Arithmetic 7.41 10.655 4.455 1.695 11.71 0.145 0.001 mean Standard 6~9 5 6 4 20 1.0 0.005 Clall Ⅲ The revealed that the water quality in all met the ground water environment quality standard Class III. Invesigation and Aanlysis on the Sewage Pollution Source at each Station 1. General The project involved one old station, Jimusi Station, the old Eastern Jiamusi Project closed Old
Standard》（GB3838-2002）, Ant and Peony River followed Class III 《Ground Surface Water Environment Quality Standard》（GB3838-2002） In 2009, Fangzheng Environment Survey Station monitored the water quality at the Entrance of Mayi River, getting the results as in the table follow: Table Mayi River Water Quality Survey Results in 2009 (mg/l) Statistical Items PH Dissolved Oxygen Potassium Permanganate Index Biochemical Oxygen Demand Chemical Oxygen Demand Ammonia Nitrogen Volatile Phenols Quarter 1 7.9 9.65 4.06 3.51 11.4 0.25 Not checked Quarter 2 7.9 10.9 4.1 4.25 10.3 0.17 Not checked Quarter 3 7.3 7.36 6.8 2.00 13.07 0.32 Not checked Quarter 4 7.70 10.4 5.84 1.42 12.3 0.37 Not checked Arithmetic mean 7.7 9.5775 5.2 2.795 11.7675 0.2775 Not checked Standard Clall Ⅲ 6~9 5 6 4 20 1.0 0.005 The table revealed that the water quality at Mayi River all met the ground water environment quality standard Class III. Yilan Survey Station monitored the water quality in , getting the results as in the table follow: Table Mudan River Water Quality Survey Resuls (mg/l) Statistical Items PH Dissolved Oxygen Potassium Permanganate Index Biochemical Oxygen Demand Chemical Oxygen Demand Ammonia nitrogen Volatile Phenols Jan. 7.46 11.62 4.59 2.39 11.3 0.128 0.001 Feb. 7.36 9.69 4.32 1.00 12.12 0.162 0.001 Arithmetic mean 7.41 10.655 4.455 1.695 11.71 0.145 0.001 Standard Clall Ⅲ 6~9 5 6 4 20 1.0 0.005 The revealed that the water quality in all met the ground water environment quality standard Class III. Invesigation and Aanlysis on the Sewage Pollution Source at each Station 1. General The project involved one old station, Jimusi Station, the old Eastern Jiamusi Project closed Old