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July 6, 2017 Monitoring Well Installation Workplan All equipment used for constructing the well must be free of contamination and cleaned to prevent potential cross contamination. Equipment, tools, materials, etc. will be decontaminated prior to the beginning of the work and prior to the well installation. For example, all screens and casings used for monitoring wells should be in a sterile and contaminant-free condition when placed in the ground. Some form of steam cleaning or high-pressure water-spraying technique combined with a low-suds non-phosphate detergent shall be employed followed by rinsing with potable water. The rinseate and drill cuttings will be spread on the ground at the site. Discharge to stormwater drains or surface water features is not acceptable. 1.6. Health and Safety Plan No hazardous constituents or contamination are expected at the project site locations, and all work will be carried out in compliance with Occupational Safety and Health Administration (OSHA) regulations and guidelines. All personnel working at the site during well construction activities shall be familiar with these regulations and guidelines. The primary physical hazards are associated with the use of the drilling rig and supporting vehicles. All drillers performing work must possess required C-57 license, and all drill crew members shall receive site-specific training prior to beginning work. The licensed driller shall be responsible for the safe operation of the drill rig as well as the crew's adherence to all safety procedures. The crew members and other personnel at the site shall wear protective equipment (i.e., hard hat, gloves, and steel toed boots), and be aware of all hazards and control procedures. All personnel working at the site shall participate in the Daily Safety Meetings and be aware of all emergency procedures. Before drilling, the existence and location of underground pipe, electrical equipment and gas lines will be determined. Documentation that nearby utilities have been marked on the ground, and that the drill site has been cleared shall be in the possession of the Field Operations Manager prior to commencement of drilling at the site. If drilling is conducted in the vicinity of overhead power lines, the power to the lines must be shut off or the equipment must be positioned and blocked such that no part, including cables can come within the minimum clearances of the lines. All well sites will be inspected by the driller prior to locating the rig to ensure a stable surface exists. 2. Drilling Details 2.1. Drilling Equipment and Techniques A C-57 licensed well driller will employ an approved mechanical means (i.e., auger, rotary, or cable tool methods) to bore the holes and construct the well to a maximum depth of about 1 foot below the bottom of the designed well screen depth. The borehole diameter will be selected so there is a minimum 2-inch radial thickness of sealing material between the well casing and borehole wall. For the prevailing subsurface conditions encountered in HydroFocus, Inc. 4