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Subsurface Utility Clearance Management Program 2.9 • For excavations, all utilities need to be marked and then exposed by hand following the protocols in this program. Pre-clearing for excavations may be performed by the "moat' technique (i.e., soft digging around the perimeter). In these cases, dig in small lifts (<12"for first 5 feet) using a dedicated spotter.) For Tolerance Zone work, unless otherwise agreed upon with the Utility Operator, work within the tolerance zone requires verification by means of hand-dug test holes performed to expose the utility. Once structures have been verified a minimum clearance of two feet must be maintained between the utility and any powered equipment. • In addition, the following activities should be conducted: — Review the work scope to be performed with the site owner/tenant to determine if it may impact any utilities; — Attempt to procure any utility maps or historic drawings of subsurface conditions of the site; — Determine the need for utility owner companies to be contacted or to have their representatives on site; — Where mark-outs terminate at the property boundary, consider the use of private utility locating / GPR / geophysical-type services which may be helpful in locating utilities. Use of private utility locating firms, however, does not eliminate the legal requirement for the Excavator firm to submit a request for Public Utility Mark-outs. Also, the information provided by the service may be inaccurate and unable to locate subsurface utilities and structures in urban areas, landfills, urban fill areas and below reinforced slabs, etc. They should not be relied upon as the only means of performing utility clearance; — Documented description of the dig site which is included in the projects Health and Safety Plan (HASP) and one call report will be maintained in the field and distributed amongst Roux personnel its contractors and subcontractors; and — Documentation of the actual placement of mark outs in the field shall be collected using dated pictures, videos and/or sketches with distance from markings to fixed objects. All documentation shall be maintained within the project file. 3.2 During Intrusive Activities The PM, field team lead or personnel performing oversight is to: • Ensure the mark-out remains valid. (In certain states there are limits regarding the duration of time after the mark-out was applied to the ground surface work can be started or interrupted.) Additionally, the mark-outs must be maintained, documented, and in many cases refreshed periodically to be considered valid, this will be accomplished through calls to the one call center. • Ensure intrusive activities are only performed within the safe boundaries of the mark-out as detailed in the One-Call Report. • Halt all work if intrusive activities have resulted in discovery of an unmarked utility. Roux personnel shall notify the facility owner/operator and the one call center. All incidents such as this will be reported as per Roux Incident Investigation and Reporting Management Program. • Halt all work if intrusive activities must take place outside of the safe boundaries of a mark-out and only proceed after new mark-outs are performed. • Halt the intrusive activities and immediately consult with the PP if an unmarked utility is encountered. • Completing any subsurface utility clearance incident reports that are necessary. 1/2019 Corporate Health and Safety Management Program I ROUX 12