RFB-85-27 26007AMLBAML, MUHLENBERG COUNTY

***ONLY ONLINE BIDS WILL BE ACCEPTED FOR THIS RFB.*** Emailed and hard copies delivered by any method WILL NOT BE ACCEPTED. On this line, Bidders must enter $0.00 for Contract Amount in the e-procurement system. Actual Contract Amount must be entered on "Official Bid Document" and submitted as an attachment in the e-procurement system.

Vendors should review and update, if necessary, all addresses and contact persons for their account prior to bid submission. This information will carry forward to a contract if awarded, therefore please ensure all information is correct. ** Entire Official Bid Document and Bid Bond (if required) should be combined as one PDF and uploaded**

The work will consist of an exploratory pit and exploratory drilling to verify the #9 seam coal mine and location of rooms and pillars. During the exploratory drilling phase, AML employees will utilize a downhole camera to verify current conditions in the mine and to determine the extents of the rock and shale fracturing from the mine subsidence. Approximately 400 gallons of water will be required to flush each hole after drilling is complete to improve the performance of the downhole camera.

The contractor should utilize a 400 -500 gallon water buffalo to ensure adequate water is available and can be used to flush the hole in 10-15 minutes. AML staff will make any necessary adjustments to the proposed hole locations for grouting the coal seam. Six-inch plus diameter holes will be drilled to the #9 coal seam in the specified order.

The hole will be cased through the soil horizon into solid competent rock with 6-inch diameter PVC pipe. A box utility trailer with sufficient volume capacity, Non-Woven, Polyethylene Geotextile Sediment Filter Bags or an equivalent system shall be used to capture all cuttings from all drill holes to minimize sediment deposits in the yards. Methane monitoring is the responsibility of the contractor, and if methane is encountered, the contractor must immediately implement a plan to secure the area.

This may require the contractor to plug the hole or insert 3-inch diameter PVC casing to a minimum of 10 ft above the ground elevation.

Responses due: 10/14/2026 9:30 AM Public bid opening: 10/14/2026 11:00 AM

NIGP codes: 912 RFB-85-27 26007AMLBAML, MUHLENBERG COUNTY