[Antennas] Radials

[Mike Reublin NF4L]

I have a 70' tower with an inverted-L for 160M and a 1/4 w sloper for 80M. The tower base has 8 yards of concrete and a lot of rebar. There are 3 #4 copper wires, with one end attached to each tower leg, then into the concrete, attached to the rebar then exits the concrete just under ground. 

The original plan was to put 3 ground rods along each wire. My electrician told me that as far as safety grounding goes, there was no benefit. The tower/base megged at 4 ohms.

The wires are currently rolled up at the base of the tower. If I straighten them out and staple them to the lawn, do they then act as radials? Would it be feasible to attach more radials to these where they emerge from the concrete, so as to avoid having the top of the concrete pad awash in wire?

73, Mike NF4L