The scale and effectiveness of investment activity is mainly associated with the creation of an attractive investment climate in the region, which reflects a combination of factors that allow the investors to safely invest in order to provide the materials, resources and get guaranteed benefits with high material output. Construction has always been distinguished by capital and material consumption, cycle time, the use of special equipment and technologies, as well as a special management system to attract and implement investments. But even with the correct calculations, investments may not bring the expected results due to lack of business and entrepreneurial resources, including those at the regional level. But on the other hand, investment processes in general, and in construction in particular, form the business activity of the region and business entities. The purpose of the study is to clarify the methodology for assessing the investments impact (general and in construction) on the business activity level in the region. The tasks of identifying the level of investments’ influence on the parameters of business activity in the region and conducting testing of the proposed developments on the Crimean region example were solved. As a result, a definition of business activity in the region was developed with the allocation of the regional socio-economic system parameters’ blocks with a justification of the investment activity characteristics, including in construction. An approach to assessing the business activity of the region is proposed, within the framework of which the correlation dependence of the investments influence on the regional business activity level is calculated using the example of the Crimean regional complex. The identified parameters of the investments’ impact flows both in construction, material production, and in innovation, can serve as the basis for developing a set of measures to stimulate the investors regarding the required indicators of the socio-economic development of the territory.

The environmental threats and risks assessment is carried out on the basis of various anthropogenic criteria analysis. It’s reasonable to assess certain environmental indicators for each type of technogenic danger. The problems of the maximum permissible environmental load assessment and the development of the regional environmental security assessment methods have been actual. Therefore, the aim of the article is to develop the basics of the regional environment security level assessment methodology. It’s expedient to assess certain partial environmental indicators for each type of technogenic hazard. Such partial indicators were analyzed by statistical methods. The integration method was used to develop partial and integral indicators for assessing the regional environmental security level. The result of the research is proposition to assess the regional environmental security level by two groups of environmental factors: 1) antropogenic substances ingress into the environment and 2) natural systems change, caused by natural resources consumption and spatial planning factors. Application of the regional environmental security assessment methodology will allow to formalize environmental management problems by using the following indicators: integral environmental security indicator of reducing the anthropogenic substances ingress into the environments (II1) and integral environmental security indicator of reducing natural system change, caused by natural resources consumption and spatial planning factors (II2).

The purpose of implementing energy saving measures is to reduce the amount of energy resources used in the production of the required volume of production, works, and services by, first of all, implementing a set of organizational, technical, technological, and economic measures. An approach to the formation of energy-saving measures at the enterprise is presented, which involves taking into account information about the values of energy-saving targets at the regional level, as well as factors for improving energy efficiency at the enterprise.

A construction company management improving urgency is determined by the need to solve the complex problems of providing the construction process with materials and other resources to raise its material capacity. The article describes different approaches to logistics management definition, as well as its goals, structural elements and their interrelationship.

The article studies the territorial features of the formation of a dangerous process - mudflows. The factors of mudflow hazard formation are described, the classification and characteristics of mudflows formed in the Crimea are given. The methods of studying mudflows are considered, the parameters of the mudflow are calculated on the example of the Shelen River, on the basis of which options for the reconstruction of existing mudflow protection structures are proposed. The purpose of the article is to substantiate environmental engineering solutions for the reconstruction of anti-mudflow hydraulic structures in mudflow-prone Crimean river basins. The object of research is the basin of the Shelen River typical for the South-Eastern rural area. The purpose of the research is to substantiate technical solutions for the reconstruction of anti-mudflow structures in the Shelen River basin. Research objectives: to study the conditions for the formation of Crimean mudflows, the history of research and classification; consider existing methods for studying mudflow hazard and calculation methods for determining the parameters of mudflows; to characterize the current state of anti-mudflow structures on the example of the Shelen river basin; justify decisions on the reconstruction of anti-mudflow structures and develop recommendations for their restoration. In the article, on the basis of field studies, hydrological flood flow rates, annual runoff volumes, water flow rates and volumes in years of different water content and average monthly water flow rates using the Shelen River basin as an example, the mudflow parameters are calculated. Anti-mudflow structures were identified and their condition was analyzed. Based on the results of the study, proposals and environmental engineering technical solutions for the reconstruction of existing anti-mudflow structures were developed