Kamins Construction Inc Pacific Ave to Interurban Trail Bicycle Safety

1 1 technologies webpage for construction treatment. Infiltration is permitted if the 2 following requirements are met: 3 4 a. Wastewater shall have a pH of 6.5— 8.5 prior to discharge. 5 6 b. The amount of flocculant added to the slurry shall be kept to the minimum 7 needed to adequately settle out solids. The flocculant shall be thoroughly 8 mixed into the slurry. 9 10 c. The slurry removed from the shaft shall be contained in a leak proof cell or 11 tank for a minimum of 3 hours. 12 13 d. The infiltration rate shall be reduced if needed to prevent wastewater from 14 leaving the infiltration location. The infiltration site shall be monitored 15 regularly during infiltration activity. All wastewater discharged to the ground 16 shall fully infiltrate and discharges shall stop before the end of each work 17 day. 18 19 e. Drilling spoils and settled sediments remaining in the containment cell or 20 tank shall be disposed of in accordance with Section 6-19.3(4)F. 21 22 f. Infiltration locations shall be in upland areas at least 150 feet away from 23 surface waters, wells, on-site sewage systems, aquifer sensitive recharge 24 areas, sole source aquifers, well head protection areas, and shall be marked 25 on the plan sheets before the infiltration activity begins. 26 27 g. Prior to infiltration, the Contractor shall submit a Shaft Drilling Slurry 28 Wastewater Management and Infiltration Plan as a Type 2 Working Drawing. 29 This Plan shall be kept on-site. adapted if needed to meet the construction 30 requirements, and updated to reflect what is being done in the field. The 31 Working Drawing shall include, at a minimum, the following information: 32 33 i. Plan sheet showing the proposed infiltration location and all surface 34 waters, wells, on-site sewage systems, aquifer-sensitive recharge 35 areas, sole source aquifers, and well-head protection areas within 150 36 feet. 37 38 ii. The proposed elevation of soil surface receiving the wastewater for 39 infiltration and the anticipated phreatic surface (i.e., saturated soil). 40 41 iii. The source of the water used to produce the slurry. 42 43 iv. The estimated total volume of wastewater to be infiltrated. 44 45 v. The accepted flocculant to be used (if any). 46 47 vi. The controls or methods used to prevent surface wastewater runoff 48 from leaving the infiltration location. 49 50 vii. The strategy for removing slurry wastewater from the shaft and 51 containing the slurry wastewater once it has been removed from the 52 shaft. CITY OF EVERETT AMENDMENTS PACIFIC AVENUE TO INTERURBAN TRAIL BICYCLE SAFETY PROJECT 8/12/2019 STATE FUND#HLP PB17(014); COE#PW3688 Page AM-74