Ariston Pacific, Inc. 5/9/2016 - Laserfiche WebLink

I 1 g. After infiltration activity is complete, loose sediment in the infiltration I 2 location that may have resulted from the infiltration activity or the removal 3 of BMPs used to manage infiltration activity shall be stabilized to prevent 4 mobilization by stormwater runoff. 5 I 6 h. Drilling spoils and settled sediments remaining in the containment cell or 7 tank shall be disposed of in accordance with Section 6-19.3(4)F. 8 9 i. Infiltration locations shall be marked on the on-site temporary erosion and 10 sediment control (TESC) plan sheets before the infiltration activity begins. 11 12 j. Prior to infiltrating water-only shaft drilling slurry or water slurry with 13 approved flocculants, the Contractor shall submit a Shaft Drilling Slurry 14 Wastewater Management and Infiltration Plan as a Type 2 Working Il 15 Drawing. This Plan shall be kept on-site, adapted if needed to meet the 16 construction requirements, and updated to reflect what is being done in the 17 field. The Working Drawing shall include, at a minimum, the following 18 information: 19 20 i. Plan sheet showing the proposed infiltration location and all surface I 21 waters, wells, on-site sewage systems, aquifer-sensitive recharge 22 areas, sole source aquifers, and well-head protection areas within 23 150 feet. 24 1 25 ii. The proposed elevation of soil surface receiving the wastewater for 26 infiltration and the anticipated phreatic surface (i.e., saturated soil). 27 I 28 iii. The source of the water used to produce the slurry. 29 30 iv. The estimated total volume of wastewater to be infiltrated. I 31 32 v. The approved flocculant to be used (if any). 33 111 34 vi. The controls or methods (e.g., trenches, traps, berms, silt fence, 35 dispersion, or discharge metering devices) that will be used to 36 prevent surface wastewater runoff from leaving the infiltration 37 location. The Working Drawing shall include all pertinent design I38 details (e.g., sizing of trenches or traps, placement or height of 39 berms, application techniques) needed to demonstrate the proposed 40 controls or methods are adequate to prevent surface wastewater I 41 runoff from leaving the infiltration location. 42 43 vii. The strategy for removing slurry wastewater from the shaft and I 44 containing the slurry wastewater once it has been removed from the 45 shaft. 46 111 47 viii. The strategy for monitoring infiltration activity and adapting methods 48 to ensure compliance. 49 50 ix. A contingency plan that can be implemented immediately if it 51 becomes evident that the controls in place or methods being used 52 are not adequate. I I AMENDMENTS TO THE 2014 STANDARD SPECIFICATIONS BOOK Revised: 8/3/15