; or (B) the expertise of the public health, physical activity, urban planning, land use, and transportation research communities in the United States and abroad. (b) Authorization of appropriations There are authorized to be appropriated such sums as may be necessary to carry out this section. Not to exceed 20 percent of amounts appropriated for each fiscal year under this subsection may be used for the research component of the program under this section. . 1004. Implementation of recommendations by Environmental Protection Agency (a) Inspector general recommendations The Administrator of the Environmental Protection Agency shall, as promptly as practicable, carry out each of the following recommendations of the Inspector General of the Agency as set forth in Report No. 2006–P–00034 entitled EPA needs to conduct environmental justice reviews of its programs, policies and activities : (1) The recommendation that the Agency’s program and regional offices identify which programs, policies, and activities need environmental justice reviews and require these offices to establish a plan to complete the necessary reviews. (2) The recommendation that the Administrator of the Agency ensure that these reviews determine whether the programs, policies, and activities may have a disproportionately high and adverse health or environmental impact on minority and low-income populations. (3) The recommendation that each program and regional office develop specific environmental justice review guidance for conducting environmental justice reviews. (4) The recommendation that the Administrator designate a responsible office to compile results of environmental justice reviews and recommend appropriate actions. (b) GAO recommendations In developing rules under laws administered by the Environmental Protection Agency, the Administrator of the Agency shall, as promptly as practicable, carry out each of the following recommendations of the Comptroller General of the United States as set forth in GAO Report numbered GAO–05–289 entitled