Exhibit 10.18

2011 Executive Incentive Plan Targets

Senior Manager	2011 Executive Incentive Plan Target as a Percent of 2011 Base Salary
Gary D. Blackford	100	%
Rex T. Clevenger	75	%
Diana Vance-Bryan	70	%
Timothy W. Kuck	70	%
Jeffrey L. Singer	70	%
Walter T. Chesley	65	%

Target Achievement*	Bonus Multiplier
110%	150	%
105%	125	%
100%	100	%
99%	95	%
98%	90	%
97%	85	%
96%	80	%
95%	75	%
94%	70	%
93%	65	%
<93%	Zero

* The target is set by the compensation committee

Scale Methodology

Directionally, every 1% variance to Target has a 5 times multiplier, with bookends at 110% and 93%, subject to the discretion of the compensation committee