(C)

1. (1) Each utility that has any underground utility facilities in the area of the proposed excavation site shall notify the developer or the designer employed by the developer of the locations and description of the utility's underground utility facilities located at the proposed excavation site in accordance with division (C)(2) of this section. The utility shall make this notification within ten working days of receiving a notice under division (B) of this section or by a later date acceptable to the developer or designer and utility. In the case of an interstate hazardous liquid pipeline or an interstate gas pipeline, the utility also shall provide written notice to the developer or designer of any special notification requirements.

2. (2) If requested by the developer or the designer employed by the developer, each utility shall do one of the following in order to comply with the notification requirements of division (C)(1) of this section:

   1. (a) Mark the location of the underground utility facilities, other than those facilities serving single-family or two-, three-, or four-unit dwellings, at the proposed excavation site in accordance with the marking standards described in division (C) of section 3781.29 of the Revised Code;

   2. (b) Provide digital or paper drawings, or both, that meet both of the following requirements:

      1. (i) They are drawn to scale and include locatable items. Locatable items may include poles, pedestals, back of curb, sidewalk, edge of pavement, centerline of ditch, property lines, and other similar items.
      2. (ii) They depict the location of the underground utility facilities. Compliance with division (C)(2) of this section does not relieve a utility from compliance with the marking requirements of section 3781.29 of the Revised Code.

(E)

1. (1) Based on the information provided pursuant to division (C) of this section, the developer or the designer employed by the developer shall indicate the approximate locations of underground utility facilities either on or with the plans prepared for the project. The developer or designer shall include with the plans the names, addresses, and telephone numbers of utilities with underground facilities at the excavation site, indicating which utilities are limited basis participants; the name and telephone number of any appropriate protection service; and any required adjustments as described in division (D) of this section, including the reasonable time necessary for the utility to make those adjustments. In the case of an interstate hazardous liquid pipeline or an interstate gas pipeline, the developer or designer also shall include any special notification requirements.

2. (2)

   1. (a) Except as otherwise provided in division (E)(2)(b) of this section, the developer or designer shall provide the plans to the commercial excavator prior to entering into a contract that involves such excavation. If the developer does not prepare written plans or have any written plans prepared, the developer shall otherwise provide the approximate locations, identifying information on the utilities, information on required adjustments, and any special notification requirements to the commercial excavator before excavation begins.
   2. (b) When the developer is a utility, the utility shall provide either the plans or the approximate locations, identifying information on the utilities, information on required adjustments, and any special notification requirements to the excavator before excavation begins.
3. (3) The developer or designer shall design the project taking into account the approximate location of existing underground utility facilities in order to prevent, as far as is practicable, disturbance or interference with those facilities.
4. (4) When a project includes installation of new underground utility facilities, the developer or designer shall attempt to design the installation so that at least a twelve-inch clearance is provided between the facilities. No facility shall be installed with less than a twelve-inch clearance unless the owners of existing facilities are notified, in writing, prior to installation.

(F)

1. (1) This section does not apply in the case of a utility making emergency repair to its own underground utility facility.
2. (2) This section does not apply in the case of the owner of the types of real property identified in divisions (C)(1) to (4) of section 3781.25 of the Revised Code, unless the owner employs a designer to make written plans for work that will involve excavation. If the owner employs a designer, the designer shall contact a protection service and utilities that are limited basis participants in accordance with divisions (A) and (B) of this section, and shall include in or with the plans the information required under division (E) of this section. The owner shall provide that information to the excavator.