HM Pacific Northwest Inc. 5/18/2023

I 1 amount of material on the pavement surface, stop and correct the operation to eliminate I 2 the excess material. 3 4 5-04.3(4)A2 Crack Sealing Areas Prior to Paving 5 In areas where HMA will be placed, use sand slurry to fill the cracks. 6 I 7 5-04.3(4)A3 Crack Sealing Areas Not to be Paved 8 In areas where HMA will not be placed, fill the cracks as follows: 9 10 A. Cracks '/4 inch to 1 inch in width - fill with hot poured sealant. 11 B. Cracks greater than 1 inch in width —fill with sand slurry. 12 I13 5-04.3(4)B Vacant 14 I 15 5-04.3(4)C Pavement Repair 16 The Contractor shall excavate pavement repair areas and shall backfill these with HMA 17 in accordance with the details shown in the Plans and as marked in the field. The I 18 Contractor shall conduct the excavation operations in a manner that will protect the 19 pavement that is to remain. Pavement not designated to be removed that is damaged as 20 a result of the Contractor's operations shall be repaired by the Contractor to the 21 satisfaction of the Engineer at no cost to the Contracting Agency. The Contractor shall I 22 excavate only within one lane at a time unless approved otherwise by the Engineer. The 23 Contractor shall not excavate more area than can be completely finished during the 24 same shift, unless approved by the Engineer. 25 26 Unless otherwise shown in the Plans or determined by the Engineer, excavate to a depth I 27 28 of 1.0 feet. The Engineer will make the final determination of the excavation depth required. The minimum width of any pavement repair area shall be 40 inches unless 29 shown otherwise in the Plans. Before any excavation, the existing pavement shall be 30 sawcut or shall be removed by a pavement grinder. Excavated materials will become the 31 property of the Contractor and shall be disposed of in a Contractor provided site off the 32 Right of Way or used in accordance with Sections 2-02.3(3) or 9-03.21. 33 I34 Asphalt for tack coat shall be required as specified in Section 5-04.3(4). A heavy 35 application of tack coat shall be applied to all surfaces of existing pavement in the 36 pavement repair area. 37 38 Placement of the HMA backfill shall be accomplished in lifts not to exceed 0.35-foot I 39 40 compacted depth. Lifts that exceed 0.35-foot of compacted depth may be accomplished with the approval of the Engineer. Each lift shall be thoroughly compacted by a 41 mechanical tamper or a roller. I 42 43 5-04.3(5) Producing/Stockpiling Aggregates and RAP 44 Aggregates and RAP shall be stockpiled according to the requirements of Section 3-02. I 45 Sufficient storage space shall be provided for each size of aggregate and RAP. Materials 46 shall be removed from stockpile(s) in a manner to ensure minimal segregation when I 2023 FEDERAL OVERLAY FEDERAL AID#STBGUL-2715(011) IWO#3788 March 2,2023 SP-79