GROUNDS KEEPING SERVICES TILL

Amendment 0004: 002.06.2024 Clarification on the Statement of Work and the BID DUEDATE IS NOW FEBRUARY 12, 2024 @ 2:00 CT: Please see additional information about power washing of the courthouse, interpretive Center and sidewalks. The courthouse and surrounding walkways will be accessed to full height using an aerial work platform or scaffolding to ensure comprehensive cleaning.

The contractor will perform test(s) using the minimal psi and max fan tip to successfully remove dirt while maintaining the original historic fabric and to reduce or eliminate any building material loss. Test size, material type, and location to be confirmed by NPS POC. Once confirmed by NPS POC, the method of cleaning is approved for implementation. The cleaning of the building will consist of pre-soaking the building and sidewalks with potable water and then applying D2 Biological cleaner on the surface.

After the appropriate dwell time has elapsed, the surface of the stone will be scrubbed using soft bristle nylon brushes. The stone and brick surfaces of the structure and sidewalk will be power washed or scrubbed using heated, potable water delivered at a max psi of 1000 while using a 25 to 40 degree fan tip. Once the building has been washed, an additional application of D2 will be applied to all surfaces to deter new biological growth.

The contract calls to service/maintain all three locations including Graball Landing. For the immediate future, the selected contractor will only need to maintain what's currently cleared which is less than an acre. The park may decide to clear additional acreage up to the entire 4.3 acres. At that time, the expectation will be to maintain the entire area.