Environmental problems of rehabilitation of degraded sites on the Yamal peninsula

The results of the qualitative characteristics of waste production and consumption in the territory of the Bovanenkovo field exploration are given. The aim of research was to determine the areas of agricultural land (reindeer pastures) Yamal area of disturbed and contaminated in the course of exploration in the development of gas and gas condensate fields group Bovanenkovo on the Yamal Peninsula. Qualitative characteristics of contamination carried out on the territory of 100 exploration wells in the area of the Bovanenkovo, Bovanenkovo-North, East and the Bovanenkovo field and Nerstinskoe deposit of total area of 3 633 sq. km. At the well site waste is found mainly IV and V classes of hazard, as well as a small amount of waste hazard class III. In accordance with the data revealed that 87,6 % (or 11035,54 m) of the total mass of waste belonged to the V class of hazard or essentially non-hazardous waste; 12,3 % (or 1546,07 m) belonged to the IV hazard class or low-hazard waste; 0,1 % (or 17,85 m) - class III hazard or moderately hazardous waste. Over half wellsites refers to type 1 and 2 wells, i. e. virtually empty is (38 % of the total number of wells) and a little cluttered wellsite (26 % of the total number of wells). By type of medium 3 cluttered well sites is 16 % of the drilling sites and they accounted for 12 % of the total mass of waste (1 500,71 m). Type 4 share sites (highly cluttered) is 12 % of the total, however, the contribution to the total weight of wastes thrown quite large is 31 % of the total amount (3 873,27 m). The smallest set of drill sites belongs to the type 5 (extremely cluttered area) is only 8 % of the total number of well sites, but the mass of waste abandoned on the grounds of type 5 is more than half the total amount of waste is 51 % (6 432,65 m). Inventory of waste production and consumption will allow to plan the direction of technical land reclamation on the Yamal Peninsula.