KLB Construction Inc 11/20/2018 - Laserfiche WebLink

I 1 the field. The Working Drawing shall include, at a minimum, the following 2 information: I 3 4 i. Plan sheet showing the proposed infiltration location and all surface 5 waters, wells, on-site sewage systems, aquifer-sensitive recharge 6 areas, sole source aquifers, and well-head protection areas within 7 150 feet. 8 9 ii. The proposed elevation of soil surface receiving the wastewater for 10 infiltration and the anticipated phreatic surface (i.e., saturated soil). 11 12 iii. The source of the water used to produce the slurry. I 13 14 iv. The estimated total volume of wastewater to be infiltrated. 15 I 16 v. The accepted fioccuiant to be used (if any). 17 18 vi. The controls or methods used to prevent surface wastewater runoff I 19 from leaving the infiltration location. 20 21 vii. The strategy for removing slurry wastewater from the shaft and 22 containing the slurry wastewater once it has been removed from the I 23 shaft. 24 25 viii. The strategy for monitoring infiltration activity and adapting methods I 26 to ensure compliance. 27 28 ix. A contingency plan that can be implemented immediately if it I 29 becomes evident that the controls in place or methods being used are 30 not adequate. 31 I 32 x. The strategy for cleaning up the infiltration location after the infiltration 33 activity is done. Cleanup shall include stabilizing any loose sediment 34 on the surface within the infiltration area generated as a byproduct of I 35 suspended solids in the infiltrated wastewater or soil disturbance 36 associated with BMP placement and removal. 37 38 2. Shaft drilling mineral slurry, synthetic slurry, or slurry with polymer additives I 39 not allowed for infiltration shall be contained and disposed of by the Contractor 40 at an accepted disposal facility in accordance with Section 2-03.3(7)C. Spoils 41 that have come into contact with mineral slurry shall be disposed of in I 42 accordance with Section 6-19.3(4)F. 43 44 8-01.3(1)C4 Management of Off-Site Water 111 45 This section is revised to read: 46 47 Prior to clearing and grubbing, the Contractor shall intercept all sources of off-site I 48 surface water and overland flow that will run-on to the project. Off-site surface water 49 run-on shall be diverted through or around the project in a way that does not introduce 50 construction related pollution. It shall be diverted to its preconstruction discharge 51 location in a manner that does not increase preconstruction flow rate and velocity and WEST MARINE VIEW DRIVE UTILITIES PAGE 33 OF 60 August 2018 I WORK ORDER#3588 WSDOT AMENDMENTS Rev 4/2/18 I