The budget for this project can be estimated based on the scope of work and the requirements of the solicitation. The project involves the replacement of three helicopter pads, construction of concrete pier footings, and provision of aluminum stairways. The estimated cost of the project can be broken down into several components, including labor, materials, equipment, and incidentals. Assuming an average cost of $500,000 per helicopter pad replacement, the total cost for the three pads would be $1,500,000. Additionally, the cost of constructing concrete pier footings and providing aluminum stairways can be estimated at $200,000 and $100,000, respectively. Other costs, such as labor, equipment, and incidentals, can be estimated at $500,000. Therefore, the total estimated budget for the project can be estimated at $2,300,000. However, this is a rough estimate and the actual budget may vary depending on the contractor's bid and the final scope of work.