For developing software, how detailed does each proposal need to be as far as scope? Can it generally explain what it's supposed to do?

It is important to provide as much detail as possible, so that reviewers and EPA can understand what is being proposed and assess the applicant’s ability to carry out the proposed work. Additional information, in terms of how project narrative details are scored, can be found in the Solicitation Notice’s Evaluation Criteria (see Solicitation Notice Section 6B). Additionally, applicants are encouraged to review the overview of the project narrative in Appendix E of the Solicitation Notice, Section 5: ‘Technical Solutions and Data Availability’ for more information and guidance.