McCann Construction Enterprises Inc 11/7/2018

I 1 1 2 x. The strategy for cleaning up the infiltration location after the infiltration I 3 activity is done. Cleanup shall include stabilizing any loose sediment 4 on the surface within the infiltration area generated as a byproduct of 5 suspended solids in the infiltrated wastewater or soil disturbance 6 associated with BMP placement and removal. I 7 8 2. Shaft drilling mineral slurry, synthetic slurry, or slurry with polymer additives not 9 allowed for infiltration shall be contained and disposed of by the Contractor at 10 an accepted disposal facility in accordance with Section 2-03.3(7)C. Spoils that 11 have come into contact with mineral slurry shall be disposed of in accordance 12 with Section 6-19.3(4)F. I 13 14 8-01.3(1)C4 Management of Off-Site Water 15 This section is revised to read: I 16 17 Prior to clearing and grubbing, the Contractor shall intercept all sources of off-site surface 18 water and overland flow that will run-on to the project. Off-site surface water run-on shall I 19 20 be diverted through or around the project in a way that does not introduce construction related pollution. It shall be diverted to its preconstruction discharge location in a manner 21 that does not increase preconstruction flow rate and velocity and protects contiguous I 22 properties and waterways from erosion. The Contractor shall submit a Type 2 Working 23 Drawing consisting of the method for performing this Work. 24 25 8-01.3(1)E Detention/Retention Pond Construction I26 This section is revised to read: 27 28 Whether permanent or temporary, ponds shall be constructed before beginning other 29 grading and excavation Work in the area that drains into that pond. Detention/retention 30 ponds may be constructed concurrently with grading and excavation when allowed by the 31 Engineer. Temporary conveyances shall be installed concurrently with grading in I 32 accordance with the TESC Plan so that newly graded areas drain to the pond as they are 33 exposed. 34 1 35 8-01.3(2)F Dates for Application of Final Seed, Fertilizer, and Mulch 36 In the table, the second column heading is revised to read: 37 I 38 Eastern Washington' 39 (East of the Cascade Mountain Crest) 40 I 41 Footnote 1 in the table is revised to read: 42 43 Seeding may be allowed outside these dates when allowed or directed by the Engineer. 44 I45 8-01.3(5) Plastic Covering 46 The first sentence of the first paragraph is revised to read: 47 I 48 Erosion Control — Plastic coverings used to temporarily cover stockpiled materials, 49 slopes or bare soils shall be installed and maintained in a way that prevents water from 50 intruding under the plastic and prevents the plastic cover from being damaged by wind. I I