Attached as Exhibit A is the Scope of Services listing major work tasks that may be requested. The City’s usage of the consultants’ services are on an as-needed basis so that if the demand is not there, then the services will not be requested. For each on-call service request, the consultant and the City will agree upon the specific scope of work and cost for that project. The City has the right to retain other consulting firms in its sole discretion when the City believes there will be an economic or other significant advantage for doing so. Services for each contract will be provided on a negotiated fee basis, per work order. No minimum amount of work is guaranteed under these agreements. Compensation will be based on time and materials with a not-to-exceed limit agreed upon by both Consultant and City before work begins.