2400 33RD ST CONTRACT AGREEMENT 2016-01-01 MF Import

ATTACHMENT A TO SECTION 01900 REVISIONS TO THE STANDARD PLANS AND SPECIFICATIONS agency and the cost ihereof shall, if necessary, be withheld from the final payment to the Coniractor. 6. Violation of these requirements will result in fines and will lay the Contractor liable tor damage suits because of malfunctioning of damaged tire hydrants, in the event of fire. BALLAST AND CRUSHED SURFACING Description Section 4-04.1 is supplemented with the (oliowing: This work shall also consist ot placing and compacting crushed surfacing base course and/or crushed surfacing top course to be used as driveway maintenance material. Crushed surfacing shall be placed to a minimum depth of 3" or as directed by the Resident Engineer. ASPHALT TREATED SASE Construction Requirements Section 4-06.3 is supplemented with the following: The Contractor may propose to the Resident Engineer the use of asphalt treated base to provide a solid surtace tor hauling and other construction activities. In wet weather, the existing soils may not support a paving operation. Aspha�t treated base for temporary working or staging areas, it elected by the Coniractor, shali be insta�led, maintained, and removed when no longer needed, at no addi�ional cost to the Owner. If weather permits and it is acceptable to ihe Resident Engineer, ihe Coniractor may install asphalt treated base in lieu of crushed suriacing base course. If this method is elected, ihe subgrade shall be prepared per Standard Specification Section 2-06 and prooi-rolled in the presence of the Resident Engineer. The subgrade elevation shall be adjusted so that ihe finished elevation oi the ATB malches the original planned finish elevation of the crushed suriacing base course. The iollowing replacement deplh conversions shall apply: e" Crushed Surfacing Base Course = 5" of Asphalt Treated Base AII underground utilities shall be installed, inspected and approved prior to ihe construction of the asphalt treated base course. HOT MIX ASPHALT Description Section 5-04. t is supplemented with the following: HMA for this work shall be Commercial HMA and design of mix, liquid asphalts, and asphalt concrete aggregate acceptance will be by Manu(acturer's Certificate of Compliance. Construction Requirements 5-04.3(7)A Mix Design Section is deleted and replaced with: 1. General. Priur to the production o( HMA, the Contractor shall determine a design aggregate structure and asphalt binder content in accordance with WS'JOT Standard Operating Procedure 732. Once the design aggregate structure and asphaN binder content have been determined, the Capital Project� Commuter Rail Attachment A to Section 01900 - 11 IFB No. RTA/CP 21-06 � Everett S�ation Phase 2REVISIONS TO THE STANDARD PLANS AND SPECIFICATIONSAddendum No.4