1. (a) Shallow saturated zone encountered. If a saturated zone is encountered above the depth where groundwater was anticipated, drilling shall cease and the following actions taken:

   1. (1) note on the borehole lithologic sample log, the initial depth at which the shallow zone was encountered;
   2. (2) install and screen a piezometer in the shallow zone; and
   3. (3) drill a new boring, to the original proposed total depth, within ten feet of the piezometer.

2. (b) Additional shallow zones encountered. If a shallow saturated zone is encountered in the next three adjacent borehole locations in the approved drilling plan:

   1. (1) the drilling plan and preliminary landfill design shall be revised to take into consideration the shallow water table;
   2. (2) the subsurface investigation shall be updated and revised as hydrogeologic information becomes available; and
   3. (3) a revised drilling plan shall be submitted to the DEQ for approval, with explanation of any changes made to the original plan.

Added at 20 Ok Reg 1151, eff 6-1-03