[1]

These funds include multiemployer plans for pensions and other employee benefits. The total individually insignificant multiemployer pension costs contributed were $466,000, $299,000 and $37,000 for 2012, 2011, and 2010, respectively, and are included in the contributions to all other funds along with contributions to other types of benefit plans. Other employee benefits include certain coverage for medical, prescription drug, dental, vision, life and accidental death and dismemberment, disability and other benefit costs. Due to our 2011 acquisitions (see Note 2) there has been an increase in the number of Sterling employees that participate in multiemployer plans affecting the comparability between 2012, 2011 and 2010 years. The acquisitions occurred August 1, 2011 and resulted in five months of pension and other retirement expenses in that year. During 2012, the Company incurred the entire year of expenses and there were no pension and other retirement expenses related to the acquisitions during 2010

[2]

Indicates whether the plan has a financial improvement plan ("FIP") or a rehabilitation plan ("RP") which is either pending or has been implemented.

[3]

The most recent PPA zone status available in 2012 and 2011 is for the plan's year-end during 2011 and 2010, respectively. The zone status is based on information that we received from the plan and is certified by the plan's actuary. Among other factors, plans in the red zone are generally less than 65 percent funded, plans in the orange zone are less than 80 percent funded and have an Accumulated Funding Deficiency in the current year or projected into the next six years, plans in the yellow zone are less than 80 percent funded, and plans in the green zone are at least 80 percent funded.

[4]

Lists the expiration date(s) of the collective-bargaining agreement(s) to which the plans are subject.

[5]

The expiration of the collective bargaining agreement related to this pension fund was not available at the time of our filing.