As used in this article, the following definitions apply: (a) âActive subsurface installationâ means a subsurface installation currently in use or currently carrying service. (b) âBoardâ means the California Underground Facilities Safe Excavation Board, also known as the âDig Safe Board.â (c) âArea of continual excavationâ means a location where excavation is part of the normal business activities of agricultural operations and flood control facilities. (d) âDelineateâ means to mark in white the location or path of the proposed excavation using the guidelines in Appendix B of the âGuidelines for Excavation Delineationâ published in the most recent version of the Best Practices guide of the Common Ground Alliance. If there is a conflict between the marking practices in those guidelines and other provisions of this article, this article shall control. âDelineationâ also includes physical identification of the area to be excavated using alternative marking methods, including, but not limited to, flags, stakes, whiskers, or a combination of these methods, if an excavator makes a determination that standard delineation may be misleading to those persons using affected streets and highways, or be misinterpreted as a traffic or pedestrian control, and the excavator has contacted the regional notification center to advise the operators that the excavator will physically identify the area to be excavated using alternative marking methods. (e) âElectronic positive responseâ means an electronic response from an operator to the regional notification center providing the status of an operatorâs obligations under subparagraph (A) of paragraph (1) of subdivision (a) of Section 4216.3. (f) (1) âEmergencyâ means a sudden, unexpected occurrence, involving a clear and imminent danger, demanding immediate action to prevent or mitigate loss of, or damage to, life, health, property, or essential public services. (2) âUnexpected occurrenceâ includes, but is not limited to, a fire, flood, earthquake or other soil or geologic movement, riot, accident, damage to a subsurface installation requiring immediate repair, or sabotage. (g) âExcavationâ means any operation in which earth, rock, or other material in the ground is moved, removed, or otherwise displaced by means of tools, equipment, or explosives in any of the following ways: grading, trenching, digging, ditching, drilling, augering, tunneling, scraping, cable or pipe plowing and driving, or any other way. (h) Except as provided in Section 4216.8, âexcavatorâ means any person, firm, contractor or subcontractor, owner, operator, utility, association, corporation, partnership, business trust, public agency, or other entity that, with their own employees or equipment, performs any excavation. (i) âHand toolâ means a piece of equipment used for excavating that uses human power and is not powered by any motor, engine, hydraulic, or pneumatic device. (j) âHigh priority subsurface installationâ means high-pressure natural gas pipelines with normal operating pressures greater than 415kPA gauge (60psig), petroleum pipelines, pressurized sewage pipelines, high-voltage electric supply lines, conductors, or cables that have a potential to ground of greater than or equal to 60kv, or hazardous materials pipelines that are potentially hazardous to workers or the public if damaged. (k) âInactive subsurface installationâ means either of the following: (1) The portion of an underground subsurface installation that is not active but is still connected to the subsurface installation, or to any other subsurface installation, that is active or still carries service. (2) A new underground subsurface installation that has not been connected to any portion of an existing subsurface installation. (l) âLegal excavation start date and timeâ means two working days, not including the date of notification, unless the excavator specifies a later date and time, whi
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