Specifications include, but are not limited to: a. Pneumatic Tire Retreading for Bus and Truck Tires i. Type of Tread/Selection of Casings All recapping shall be mud, snow or all-weather design, suitable for surface road use and shall comply with federal,state and local noise performance standards. The quality of tread rubber shall be as specified. The contractor shall be responsible for selection of casings. All casings shall be recapped using the pre-cure method. Casings older than five years and/or have been recapped twice previously, will be rejected. However, FCPS may make an exception to this general rule, in writing, on an individual case-by case basis. b. Type of Process For the purpose of this bid, recapping process is classified as pre-cure method. Only a full cap or top-cap recap shall be accepted. c. Undertread The rubber between the base of the tread design and the buffed carcass, known as undertread, shall be equal to or not less than 20% of the tread depth of the retreaded tire. The tread depth of the retreaded tire shall be no less than that specified for the applicable size listed in the attached item specifications.