Laserfiche WebLink
total well depth, depth to water, and water quality parameters including temperature, pH, specific <br /> conductance, DO, and ORP will be measured prior to starting development and periodically <br /> thereafter. Development will continue until a minimum of five casing volumes of water are <br /> removed and the water quality parameters stabilize. <br /> 5.2.5 Well Survey <br /> The location, ground surface elevation, and elevation of well MW-9 will be measured by a <br /> California-licensed Professional Land Surveyor in accordance with the requirements for the State <br /> Water Resources Control Board Geotracker database. <br /> 5.3 Notice of Intent <br /> A Notice of Intent (NOI) for the groundwater injections will be submitted in accordance with <br /> RWQCB General WDR Order No. R5-2015-0012. The NOI form and required attachments will be <br /> provided to the RWQCB under a separate cover. The injections will be performed after receiving <br /> approval for the NOI from the RWQCB. <br /> 5.3.1 Injection Boring Permits <br /> Boring permits will be obtained from the San Joaquin County Environmental Health Department <br /> (EHD). Rubik will notify the EHD and RWQCB at least 3 days prior to the field work. <br /> 5.3.2 Health and Safety Plan <br /> A Site-specific Health and Safety Plan (HASP)will be reviewed and signed by all field personnel, <br /> including subcontractors, prior to work initiation. The HASP will identify potential health and safety <br /> hazards for each phase of Site work and will include requirements and procedures for protection. <br /> The plan will remain on-Site during all field work, and daily safety meetings and observations will <br /> be conducted. <br /> 5.3.3 Utility Clearance <br /> Underground Service Alert (USA) will be notified in advance of subsurface activities to identify <br /> underground utilities. A private utility locator will perform a geophysical survey in the vicinity of <br /> each drilling location to identify potential utilities or other subsurface obstructions. <br /> 5.4 Injection Procedures <br /> The temporary injection points upgradient of wells MW-3 and possibly MW-9 will be constructed <br /> using a truck-mounted direct-push drilling rig. At each point, the drilling rods will be advanced to <br /> a total depth of 70 feet bgs and the injections will be completed in three 5-foot intervals between <br /> 55 and to 70 feet bgs, unless field conditions dictate otherwise. At each interval, the rods will be <br /> retracted to expose a 5-foot screen and the solution will be injected under pressure into the <br /> subsurface through the drilling rods and screen. After the injections are completed, the borings <br /> will be tremie grouted with neat cement through the drilling rods to the ground surface. <br /> The solution will be injected into each boring at flow rates up to 20 gallons per minute (gpm). <br /> Pressure up to 50 psi will be applied to ensure maximum distribution of the substrate to the <br /> subsurface without creating preferential flow pathways or flow up the drilling rod. <br /> Nutrien Vernalis, California 4 p <br /> Pilot Test Work Plan <br />