Jansen Inc 6/10/2019 - Laserfiche WebLink

I I1 ii. The proposed elevation of soil surface receiving the wastewater for 2 infiltration and the anticipated phreatic surface (i.e., saturated soil). I 3 4 •iii. The source of the water used to produce the slurry. 5 6 iv. The estimated total volume of wastewater to be infiltrated. I7 8 v. The accepted flocculant to be used (if any). 9 1 10 vi. The controls or methods used to prevent surface wastewater runoff from 11 leaving the infiltration location. 12 I13 vii. The strategy for removing slurry wastewater from the shaft and 14 containing the slurry wastewater once it has been removed from the 15 shaft. I 16 111 17 viii. The strategy for monitoring infiltration activity and adapting methods to 18 ensure compliance. I19 20 ix. A contingency plan that can be implemented immediately if it becomes 21 evident that the controls in place or methods being used are not 22 adequate. 23 24 x. The strategy for cleaning up the infiltration location after the infiltration 25 activity is done. Cleanup shall include stabilizing any loose sediment on I26 the surface within the infiltration area generated as a byproduct of 27 suspended solids in the infiltrated wastewater or soil disturbance 28 associated with BMP placement and removal. I29 30 2. Shaft drilling mineral slurry, synthetic slurry, or slurry with polymer additives not 31 allowed for infiltration shall be contained and disposed of by the Contractor at an ▪ 32 accepted disposal facility in accordance with Section 2-03.3(7)C. Spoils that have ▪ 33 come into contact with mineral slurry shall be disposed of in accordance with 34 Section 6-19.3(4)F. I35 36 8-01.3(1)C4 Management of Off-Site Water 37 This section is revised to read: I 38 39 Prior to clearing and grubbing, the Contractor shall intercept all sources of off-site surface 40 water and overland flow that will run-on to the project. Off-site surface water run-on shall be 41 diverted through or around the project in a way that does not introduce construction related I42 pollution. It shall be diverted to its preconstruction discharge location in a manner that does 43 not increase preconstruction flow rate and velocity and protects contiguous properties and 44 waterways from erosion. The Contractor shall submit a Type 2 Working Drawing consisting I45 of the method for performing this Work. 46 47 8-01.3(1)E Detention/Retention Pond Construction I48 This section is revised to read: 49 50 Whether permanent or temporary, ponds shall be constructed before beginning other 1 51 grading and excavation Work in the area that drains into that pond. Detention/retention City of Everett Page AM-71 Amendments Everett Downtown Streetscape Improvement March 22, 2019