PA DCNR, Tuscarora State Forest , requires services to deliver, paver-place, and compact approximately 6,500 tons of limestone Driving Surface Aggregate (DSA) to West Licking Creek Drive in Mifflin and Huntingdon Counties. Passive Sieve Low Percentage High Percentage 1 ½ inch 100% -- ¾ inch 65% 97% #4 30% 65% #16 15% 30% #200* 11% 15% The fines passing the #200 sieve must be rock material. No clay or silt soil may be added. Limestone material passing the #200 sieve may be used to make up a deficit in the distribution of sandstone aggregate rock, and vice versa. All added material passing the #200 sieve must be derived from rock material that conforms to program specifications. The amount of particles passing the #200 sieve will be determined using the washing procedures specified in PTM No. 100.
