Granite Construction Company 5/1/2018

11 1 vi. The controls or methods used toP revent surface wastewater runoff 2 from leaving the infiltration location. 3 4 vii. The strategy for removing slurry wastewater from the shaft and 5 containing the slurry wastewater once it has been removed from the 6 shaft. 111 7 8 viii. The strategy for monitoring infiltration activity and adapting methods 9 to ensure compliance. I 10 11 ix. A contingency plan that can be implemented immediately if it 12 becomes evident that the controls in place or methods being used are 13 not adequate. 14 15 x. The strategy for cleaning up the infiltration location after the infiltration 16 activity is done. Cleanup shall include stabilizing any loose sediment 17 on the surface within the infiltration area generated as a byproduct of 18 suspended solids in the infiltrated wastewater or soil disturbance 19 associated with BMP placement and removal. I 20 21 2. Shaft drilling mineral slurry, synthetic slurry, or slurry with polymer additives not 22 approved for infiltration shall be contained and disposed of by the Contractor at 23 an approved disposal facility in accordance with Section 2-03.3(7)C. Spoils 24 that have come into contact with mineral slurry shall be disposed of in 25 accordance with Section 6-19.3(4)F. 26 27 8-01.3(1)C4 Management of Off-Site Water 28 This section is revised to read: 29 30 Prior to clearing and grubbing, the Contractor shall intercept all sources of off-site 31 surface water and overland flow that will run-on to the project. Off-site surface water 32 run-on shall be diverted through or around the project in a way that does not introduce 33 construction related pollution. It shall be diverted to its preconstruction discharge 34 location in a manner that does not increase preconstruction flow rate and velocity and 35 protects contiguous properties and waterways from erosion. The Contractor shall submit 36 a Type 2 Working Drawing consisting of the method for performing this Work. 37 38 8-01.3(1)E Detention/Retention Pond Construction I 39 This section is revised to read: 40 41 Whether permanent or temporary, ponds shall be constructed before beginning other 42 grading and excavation Work in the area that drains into that pond. Detention/retention 43 ponds may be constructed concurrently with grading and excavation when allowed by 44 the Engineer. Temporary conveyances shall be installed concurrently with grading in 45 accordance with the TESC Plan so that newly graded areas drain to the pond as they 46 are exposed. 47 I 48 8-01.3(2)F Dates for Application of Final Seed, Fertilizer, and Mulch 49 In the table, the second column heading is revised to read: 50 51 Eastern Washington' 52 (East of the Cascade Mountain Crest) 53 54 Footnote 1 in the table is revised to read: I HOT MIX ASPHALT OVERLAY-2018 PAGE 30 OF 53 March 6,2018 WORK ORDER#3667 I AMENDMENTS TO STANDARD PROVISIONS