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I <br /> 1 c. The slurry removed from the shaft shall be contained in a leak proof cell or <br /> 2 tank for a minimum of 3 hours. <br /> 3 <br /> 4 d. The infiltration rate shall be reduced if needed to prevent wastewater from <br /> 5 leaving the infiltration location. The infiltration site shall be monitored <br /> 6 regularly during infiltration activity. All wastewater discharged to the ground <br /> 7 shall fully infiltrate and discharges shall stop before the end of each work <br /> 8 day. <br /> 9 <br /> 10 e. Drilling spoils and settled sediments remaining in the containment cell or <br /> 11 tank shall be disposed of in accordance with Section 6-19.3(4)F. <br /> 12 <br /> 13 f. Infiltration locations shall be in upland areas at least 150 feet away from111 <br /> 14 surface waters, wells, on-site sewage systems, aquifer sensitive recharge <br /> 15 areas, sole source aquifers, well head protection areas, and shall be <br /> 16 marked on the plan sheets before the infiltration activity begins. <br /> 17 <br /> 18 g. Prior to infiltration, the Contractor shall submit a Shaft Drilling Slurry <br /> 19 Wastewater Management and Infiltration Plan as a Type 2 Working <br /> 20 Drawing. This Plan shall be kept on-site, adapted if needed to meet the <br /> 21 construction requirements, and updated to reflect what is being done in the <br /> 22 field. The Working Drawing shall include, at a minimum, the following <br /> 23 information: • <br /> 24 <br /> 25 i. Plan sheet showing the proposed infiltration location and all surface <br /> 26 waters, wells, on-site sewage systems, aquifer-sensitive recharge <br /> 27 areas, sole source aquifers, and well-head protection areas within 150 <br /> 28 feet. <br /> 29 <br /> 30 ii. The proposed elevation of soil surface receiving the wastewater for <br /> 31 infiltration and the anticipated phreatic surface (i.e., saturated soil). <br /> 32 <br /> 33 iii. The source of the water used to produce the slurry. <br /> 34 <br /> 35 iv. The estimated total volume of wastewater to be infiltrated. <br /> 36 <br /> 37 v. The accepted flocculant to be used (if any). <br /> 38 <br /> 39 vi. The controls or methods used to prevent surface wastewater runoff <br /> 40 from leaving the infiltration location. <br /> 41 <br /> 42 vii. The strategy for removing slurry wastewater from the shaft and <br /> 43 containing the slurry wastewater once it has been removed from the <br /> 44 shaft. <br /> 45 <br /> 46 viii. The strategy for monitoring infiltration activity and adapting methods to <br /> 47 ensure compliance. <br /> 48 <br /> 49 ix. A contingency plan that can be implemented immediately if it becomes <br /> 50 evident that the controls in place or methods being used are not <br /> 51 adequate. <br /> 1 <br />