Specifications include, but are not limited to:. The Standing Stone Township Supervisors are requesting bids for the combined purchase of course black cinders minimum of 500 CU YDS, maximum of 1500 CU YDS and Antiskid minimum of 250 ton, maximum of 750 ton (antiskid is contingent on the ability to deliver course black cinders) for delivery in 2021. Delivery will be to the township building site storage shed at the township supervisors request. Dirt and Gravel Road Projects: The Standing Stone Township Supervisors are requesting bids for the 2021 Dirt and Gravel Road Projects for the following materials 2RC, DSA, 2A, 2A modified, 2B, 4 clean, R4, R5, R6, R7, R8. Delivery will be in the Standing Stone Township at the township supervisors request. Quality of material must meet Standing Stone Township approval.