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Drilling and Excavating Health and Safety Guidance Procedures PREP: • Prior to conducting any subsurface work, a markout must ALWAYS be called in (approximately three working days before field work is scheduled-depending on the area). In some areas, not all markouts are performed by the"Call Before You Dig System". A Markout tracking sheet should be used. This will need to get filled out whenever a markout is called in. There will be an area where you will need to fill in the utilities contacted and identify utilities that are not listed. When a utility is not listed,you will need to contact that utility directly and obtain maps and/or get them to markout the property. • Always search the file and request the client search files for an as-built of the station/facility. WHEN ON SITE: • Subcontractors are required to perform an on-site inspection of their heavy machinery each day prior to the start of fieldwork. The Antea Group Site Safety Officer(SSO)will observe the inspection. Any safety concerns identified by the subcontractor must be addressed prior to the use of the equipment. During the inspection, the subcontractor must verify that all rig/vehicle kill switches are working properly. Antea Group employees on-site must be informed of the location of the kill switches and how to operate them. • As part of your on-site health and safety meeting, walk the site with the drillers and identify possible boring locations (make sure the locations shown on the work plan/site plan are in areas free of utilities/subsurface structures). Make sure all utilities have been marked out properly. It is your responsibility for our client to ensure all boring locations are clear of utilities prior to drilling. Often "as-builts"are incorrect or not available. • Attempt to determine how all utilities are running. For the most part, utilities can run anywhere and can bend and twist in any direction but,there are a few basic things to keep in mind. Usually water and sewer lines will run to a bathroom. Electrical will run in between on-site lights, the kiosk and SS building. Storm water drains usually tie into one another and you can get a general idea of how they run by looking into them and seeing what direction the line is going. Obviously any cut outs in the asphalt should be avoided, especially if observed around the USTs (often, leak detection is an afterthought and is added following the completion of the service station rebuild and its location is obvious due to a continuous cut out in the asphalt around the tank field). • WE SHOULD NOT DRILL OR EXCAVATE WITHIN TEN FEET OF THE TANK FIELD, USTs OR PUMP ISLANDS. IN ADDITION, DO NOT DRILL IN BETWEEN THE PUMP ISLAND AND THE TANK FIELD. Should drilling be required within Ten feet of the above noted systems,an"air knife"should be utilized to a depth of at least ten feet below grade surface(bgs). Drilling within five feet of the above noted systems will require the station and tank systems to be shut down. It may be helpful to open up tank field manways and identify the general direction that the product lines are running. • ALWAYS HAND or AIR EXCAVATE (110% the width of the proposed hole) TO AT LEAST FIVE FEET bgs. If you are going in the same location as a previously installed point and the diameter of the new boring/well is larger, you must hand auger. In addition, if you didn't advance the "old" boring yourself, you can't assume that it is a safe drilling location. Refusal may have been encountered in the"old" location. If refusal with the hand auger is encountered prior to five feet, move to a new location. If you make three attempts without success, call office to discuss alternatives. If you can't reach the PM contact your UM for further instruction. • If you encounter pea-gravel while excavating STOP. Call the Antea Group PM for further instruction. Utilities or USTs may be present. • If you hit/damage any utility/subsurface feature IMMEDIATELY contact the office for further instruction. If you can't reach the PM contact your UM for further instruction. Also contact your HSE Sr.Specialists. L.SUBCONTRACTOR SHSPs All subcontractors of Antea Group shall be responsible for the development and implementation of their own SHSP to cover duties and hazards specific to that subcontractor's area of expertise or on-site functions. Subcontractors are given the opportunity to review Antea Group's SHSP,and must sign the document,prior to the start of on-site work. 15