1 Certified Playground Mulch 1 Cubic Yard 2 Engineered Wood Fiber 1 Cubic Yard 3 Delivery Per Tri-Axel 1 Cubic Yard 4 Total for a Tri-Axel With Delivery 1 Cubic Yard. Mulch Consistency: 1. Use 100% double-shredded hardwood derived from disease-free deciduous trees; 2. In no case shall more than 30% of a hardwood mulch mixture be from softwood evergreen trees (i.e.; Pinus genera). The remaining 70% shall be from disease-free deciduous trees; 3. Free from contaminants such as, but not limited to, leaves, limbs, roots, stumps, pallets, wood chips, sawdust, grass, weeds, yard trimmings, paper, plastic, glass, metal, rock, brick, asphalt, etc.; 4. Hardwood mulch shall complete adequate composting cycles of 140 degrees F so that all viable weed seeds are destroyed and no further decomposition due to nitrification will occur.