Section 105 IAC 16-1-10 - Directional drillingAuthority: IC 8-23-2-6; IC 8-23-5-10
Affected: IC 8-23-5-10
Sec. 10.
(a) All utility locations near the path of the proposed drill, including the depth of each utility, shall be identified prior to any drilling. All utilities and underground fiber shall be exposed prior to any drilling.(b) The diameter of the drilled hole shall conform to the outside diameter of the conduit or conduits as closely as practical. The operator shall pressure grout to fill any voids which develop during the installation operation.(c) The operator shall be responsible to remove and replace any conduit damaged in the directional drilling operations at no additional cost to the department.(d) The use of water and other fluids in connection with the drilling operation will be allowed only to the extent necessary to lubricate cuttings. Jetting shall not be allowed, and the use of water alone as a drilling fluid shall not be used. The operator shall use a drilling fluid or slurry consisting of at least ten percent (10%) high grade, processed bentonite to consolidate excavated material, seal the walls of the hole, and furnish lubrication for the subsequent removal of material and immediate installation of the conduit.(e) The operator shall use a means of collecting and containing drilling fluid or slurry that returns to the surface, such as a slurry pit. The following procedures shall be utilized: (1) Provide measures to prevent drilling fluids from entering storm sewer systems.(2) Prevent drilling fluid or slurry from accumulating on or flowing onto sidewalks, other pedestrian walkways, driveways, or streets.(3) Immediately remove any slurry that is inadvertently deposited on pedestrian walkways.(4) Transport waste drilling slurry from the site and dispose of it.(5) Protect wetlands from slurry using appropriate soil erosion control measures, as no slurry shall be allowed to enter wetlands.(f) A digital walkover locating system shall be used to track the drill head during the bore. At minimum, the locating system shall be capable of determining the pitch, roll, heading, depth, and horizontal position of the drill head at any point along the bore. During each drilling operation, the drill head shall be located every ten (10) feet along the bore and prior to crossing any underground utility or structure. Upon completion of the drilling operation and conduit installation, the operator shall furnish an as-built profiledrawing and plan drawing for the drilled conduit, showing the horizontal and vertical locations of the installed conduit.(g) The following actions on bridges or its structures shall not be allowed:(1) Attachments to any bridge or structure that reduces the under-bridge clearance for vehicles or vessels passing under the bridge or structure.(2) Drilling or welding of the steel girders.(3) Attaching conduit or hangers to the bridge barrier wall or bridge railing.Indiana Department of Transportation; 105 IAC 16-1-10; emergency rule filed 12/16/2021, 12:43 p.m.: 20211222-IR-105210537ERA, eff Jan 1, 2022