RESEARCH OF SEASONAL PRESENCE VARIABILITY OF BOD, SUSPENDED MATTERSaNd OIL PRODUCTS IN SURFACE RUNOFF
Using the method of time series analysis there has been estimated the influence of casual, seasonal and trend factors on the variability of BOD, suspended matters and oil products in the surface runoff that appears on the territory of Samara city. It is determined that casual factor influences mostly the variability indexes of BOD and suspended matters (55% and 48% accordingly), seasonal factor influences mostly the variability indexes of oil products (70%). There is little influence of trend factor (less than 11%).