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A=COM drilling operations. Other indicators of subsurface installations and utilities are the presence of warning tape, pea gravel, sand, non-indigenous material, bentonite, red concrete(indicative of electrical duct banks)and any departure from native soil or backfill. 4.13.2 If unanticipated concrete/debris is encountered and/or if a void is encountered, drilling will be immediately discontinued and the Manager notified. Drilling may only proceed with Manager or SH&E Manager approval. 4.14 Use of Manual Slide Hammer 4.14.1 The following health and safety procedures should be followed when using a manual slide hammer to install shallow injection points, drive point piezometers, and drill tools: • Only use a manual slide hammer that either attaches directly to the point/piezometer being driven or that incorporates a cap on the point/piezometer/drill tool that prevents the slide hammer from slipping off the point/piezometer/drill tool. • Always grasp the manual slide hammer(handles if equipped with handles)with both hands while driving the point/piezometer/drill tool. • Never allow hands or feet to get between the manual slide hammer and the drive plate or anvil. 4.15 Use of Augers 4.15.1 The following general health and safety procedures should be followed when supervising borings with continuous flight hollow-stem augers: • Never place hands or fingers under the bottom of an auger section when it is being hoisted over the top of the auger section in the ground or other hard surfaces such as the drill rig platform. • Never allow feet to get under the auger section that is being hoisted. • When augers are rotating, stay clear of the rotating auger and other rotating components of the drill rig. Never reach behind or around a rotating auger for any reason. • Use a long-handled shovel to move auger cuttings away from a rotating auger. Never use hands or feet to move cuttings away from a rotating auger. • Do not attempt to remove earth from rotating augers.Augers should be cleaned only when the drill rig is in neutral and the augers are stopped from rotating. • Loud noises may occur while driving split spoons. At minimum hearing protection shall be worn when driving split spoons. • When pulling/lifting augers, a clevis pin or other closed device shall be used. Use of J-hooks is prohibited. 4.16 Attaching and Breaking Rods 4.16.1 Do not use manual tools(e.g., pipe wrenches)in combination with rotation of the drill stem. Manual tools are not designed for the load, and may break. • The use of such tools creates a significant impact hazard for those in the work area, because they rotate with the drill stem. Manual tool use in combination with a rotating drill stem to attach or break rods is therefore prohibited. • Manual tools may be used if the drill stem is isolated/positively disengaged. • Mechanical means of rod separation that are permitted include: o Opposing hydraulic controls. o Rod locking devices or machine's power vice. o Hydraulic breakout tools. o Hydraulic foot clamps. Drilling,Boring,&Direct Push Probing(S3AM-321-PR1) Revision 2 July 31,2019 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. Page 8 of 12