Trans 29.12(3)(a)(a) Facilities appurtenant to pipelines, including manholes, vents, drains, markers, and valve and regulator pits, not located at the department railroad property boundary lines, shall be installed or modified so that their uppermost surfaces are flush and parallel to the adjacent surface. Trans 29.12(3)(b)(b) If a vent pipe is required, it shall be located and constructed so as not to interfere with railroad use or maintenance and shall not be concealed by vegetation. Vent pipes shall be placed as close as practicable to an existing fence or to a department railroad property boundary line. Trans 29.12(3)(c)(c) No drain for a casing, tunnel, or gallery enclosing a carrier of liquids, liquefied gas, or heavy gas may be located upon department railroad property. Trans 29.12(3)(d)(d) A utility shall place readily identifiable markers, conforming to all applicable Wisconsin administrative code requirements, at the location at which any department railroad property line is crossed by one of the utility’s pipelines carrying any flammable, corrosive, expansive, energized or unstable contents. Trans 29.12(4)(a)(a) Casing required. A utility shall place its carrier in casing in the following circumstances: Trans 29.12(4)(a)1.1. Casing is required by the AREA, industry or company codes or policies or by public agency codes, laws or ordinances; Trans 29.12(4)(a)3.3. Future inserting, removing, replacing or maintaining of a carrier may be required and open trench construction is to be avoided; Trans 29.12(4)(b)1.1. A casing shall be designed to support the load of the railroad and of any superimposed loads. Casing shall meet at least minimally applicable design requirements. Trans 29.12(4)(b)2.2. Casing under railroad tracks and across department railroad property shall conform with the AREA. Trans 29.12(4)(b)3.3. If additional tracks are constructed in the future or the railroad operator determines that the roadbed should be widened, the casing shall be extended correspondingly to meet the requirements of subd. 2. The utility shall pay all costs of the extension. Trans 29.12(4)(b)4.4. The casing, when sealed, shall be properly vented. Vent pipes shall conform with the AREA. Trans 29.12(4)(b)5.5. Rigid casing or suitable bridging shall be used where track support would be impaired by a buried flexible carrier pipe. Trans 29.12(4)(b)6.6. The casing when sealed shall be sealed at the ends with a flexible material to prevent water or debris from entering the space between the casing and the carrier. If an end of a casing is below the ground, it shall be suitably sealed to the outside of the carrier pipeline. Trans 29.12(5)(5) Uncased pipelines. Gas lines may be uncased as long as the installation complies with the AREA. An uncased pipeline other than gas lines may be installed or modified beneath a department railroad facility if the installation or modification is made by open trench construction, if the carrier pipeline is not pressurized and if the utility agrees in writing to the following: Trans 29.12(5)(a)(a) To abandon in place, in a manner acceptable to the department, that segment of the pipeline beneath the tracks in which a leak or break develops; Trans 29.12(5)(b)(b) To tunnel, jack or dry bore any required replacement segment; and Trans 29.12(5)(c)(c) To provide for and comply with the following wherever applicable: Trans 29.12(5)(c)1.1. The pipeline shall conform to the material and design requirements of the utility industry, the AREA and of the applicable governmental codes and specifications. The pipeline shall be designed to support the load of the railroad and of any superimposed loads. Trans 29.12(5)(c)2.2. Satisfactory bridging, concrete slabs, enclosures, tunnels, boxing or other appropriate measures shall be used to protect existing uncased pipelines that, because of their shallow burial or their location, may be vulnerable to damage from railroad operations. Trans 29.12(6)(a)(a) Trenched construction of pipelines may be by open excavation or plowing. The construction shall: Trans 29.12(6)(a)3.3. Assure that the trench does not trap excessive moisture or become a drainage channel; and Trans 29.12(6)(b)(b) In all trenched construction, a utility shall conform to the American railway engineering association’s manual for railway engineering standards for earthwork, culverts or other utility work.