Specifications include, but are not limited to: Furnishing equipment, materials, and labor required to drill and install monitoring wells on the Chino Airport property (Airport). The Airport is located at 7000 Merrill Avenue, Chino, California, in San Bernardino County (the County). Figure 1 presents a general vicinity map, and Figure 2 shows the site plan. Up to up to six (6) borings will be advanced using hollow-stem auger (HSA) drilling equipment at depths to approximately 120 feet bgs, and a monitoring well will be installed within each borehole. Up to six (6) proposed monitoring wells will be installed in Area of Concern (AOC) HH near Building A340 and AOC J-K (Figures 3 and 4). Tetra Tech, Inc. (Tetra Tech) will mark final drilling locations and provide field supervision, drilling oversight, and sampling and analysis on behalf of the County. Work will not take place without the Tetra Tech field representative on-site. Prior to finalizing any monitoring wells, a final inspection will be conducted by Tetra Tech. For this task, drilling and well installation will include the following general items: Mobilization of equipment and support vehicles to the Airport – all drivers on the Airport must have current Airport driver training and gate access prior to start Managing offsite investigation derived waste (IDW) disposal of drill cuttings and fluids, including delivery/pickup/rental and management of storage containers on the Airport Providing site security during drilling and well installation activities, if necessary Performing equipment cleanup, demobilization, and site restoration and decontaminating all drilling equipment
