The extenuation of adverse impacts on the environment is the main focus of the environmental impact process. There are lots of mitigation methods that are proposed in the statement f environment impact but in order to address these environmental impacts they must be successfully implemented. Under the planning system of the English the measures for environmental protection implementation can only be secured by thorough planning obligations and conditions.

For the planning control formulation the only factor is EIS. All the measures of mitigation proposed an EIS is likely being converted into obligations and conditions. The details of graphical and statistical studies from almost 40 planning applications over fiver counties access the measures of mitigation conversions to the planning controls. A large proportion of these measures are not implemented potentially as they were uncovered by obligations and conditions.

Many other factors shown high responsibility in the formulation of planning controls. Usually the practices vary between development types and counties. It was affected by the study of the environment and the mitigation guidance as well as the planning had not affected the process significantly. To enhance the measures of mitigation various recommendations are made recently and it even includes the use of management plans of the environment.

Almost more than 50% of the mitigation measures are found to be uncovered and it leads to the doubt that whether they could be potentially implemented or not. Variations of mitigation coverage were discovered  between different counties and aspects of the environment thus making the issues more complex. Lack of available data is obstructing the analysis in a smooth manner. The presence of an array of extra obligations and conditions that are not based on the EIS’ ensure other factors like expert judgement, consultations important in the planning controls. Among the various development types  variations have been found.