The environment protection legislation form a broadly coherent system of national park protection. An important problem is the need to protect the special natural values of the Polesie National Park in connection with the planned business activities involving the hard coal mining outside the protected area. The most crucial element designed to protect the national park is the need to carry out an environmental impact assessment of the planned project as provided for in the Act on providing information about the environment and its protection, public participation in environmental protection and environmental impact assessments. The analysis of the procedure for issuing decisions on the environmental conditions of the planned project leads to the conclusion that the possibility of obtaining a real effect on its content and the right to appeal against it to the administrative court is conditional on obtaining the right of a party to this proceeding. The National Park Director will be capable to be a party to the proceedings if he demonstrates that the area of the park is within the range of significant impact of the project, which may impose restrictions in the development of the real estate in accordance with its current intended purpose. These conditions are difficult to fulfil under the currently applicable legislation. Two solutions may be proposed for the law as it should stand. First one is granting the director of the national park the right to consult on environmental conditions in the event of possible negative impacts of the planned project on the nature of the national park. The second solution involves the widening of the catalogue of participants to the proceedings on the issuance of a decision on the environmental conditions by adding the director of the national park in case of possible adverse impacts of the planned project on the park’s natural assets.