SECTION 252:515-7-56. Shallow saturated zone investigation

(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)   note on the borehole lithologic sample log, the initial depth at which the shallow zone was encountered;

(2)   install and screen a piezometer in the shallow zone; and

(3)   drill a new boring, to the original proposed total depth, within ten feet of the piezometer.

(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)   the drilling plan and preliminary landfill design shall be revised to take into consideration the shallow water table;

(2)   the subsurface investigation shall be updated and revised as hydrogeologic information becomes available; and

(3)   a revised drilling plan shall be submitted to the DEQ for approval, with explanation of any changes made to the original plan.

[Source: Added at 20 Ok Reg 1151, eff 6-1-03]