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B Abandoned borings shall be backfilled in the presence of the EHD inspector with neat <br />cement within two days. <br />C Settlement of abandoned boring(s) shall be backfilled again with neat cement to <br />adjacent ground surface. <br />PART IV. SOIL GAS WELL INSTALLATION <br />4.01 GENERAL <br />A Contractor shall install the soil gas wells in the presence of the EHD inspector. <br />B Any boring that collapses during well installation shall be re -drilled to the specified <br />depth at no additional cost to the County. <br />4.02 PROBE PIPE ASSEMBLY <br />A Measure the depth of the well drilled from surrounding grade in the presence of the <br />Engineer and EHD inspector before probe pipe installation. <br />B Couplings shall not be used to join probe pipe. All joints shall be flush threaded. <br />C Contractor shall complete assembly of the probe pipe with the perforated sections per <br />the dimensions shown on the well schedule. <br />D Maintain the probe pipe identification throughout the work. Identify each probe pipe by <br />placing required colored duct tape per color code on top of the probe pipe. <br />E Place a PVC end cap on the top end of probe pipe and secure it by screwing SS No. 6 <br />screws. <br />F Insert each probe pipe carefully into the well borehole. <br />G Do not bend or kink the probe pipe. <br />H Probe pipes shall be installed to a near -straight position in the borehole. Check the <br />straightness of the probe pipe in the borehole with a flashlight. <br />I Probe pipe color schedule: Shallow -Red, Intermediate -Blue, Deep -Yellow. <br />FH-LFG System Upgrade Phase 1 Section 01730 Page 25 <br />Technical Specifications Soil Gas Well <br />