This announcement is to amend the solicitation to post the questions/answers, Addendum to the Project Specifications, and the Revised Specifications for all interested parties for the Trail Replacement project at Indiana Dunes National Park. The solicitation and any amendments can be found and retrieved on SAM.gov. Please complete the SF Form 1442 as instructed. All amendments must also be read - SF 30 can be signed and returned once downloaded from SAM.gov or acknowledged that it was reviewed in block #19 on the SF 1442.