Following is a description of the valuation methodologies used for primary plan assets measured at fair value.

Cash – Cash is valued at cost which approximates fair value, and is classified as level 1 of the fair value hierarchy.

Common Collective Trusts – Common collective trusts are pools of investments within cash equivalents, equity and fixed income that are benchmarked relative to a comparable index. They are valued on the basis of the relative interest of each participating investor in the fair value of the underlying assets. The underlying assets are valued at net asset value ("NAV") and are classified as level 2 of the fair value hierarchy.

Equity Securities – Equity securities are common stocks and preferred stocks valued based on the price of the security as listed on an open active exchange and classified as level 1 of the fair value hierarchy, as well as warrants and preferred stock that are valued at a price, which is based on a broker quote in an over-the-counter market, and are classified as level 2 of the fair value hierarchy.

Private Equity – Private equity is composed of interests in private equity funds valued on the basis of the relative interest of each participating investor in the fair value of the underlying assets and/or common stock of privately held companies. There are no observable market values for private equity funds. The valuations for the funds are derived using a combination of different methodologies including (1) the market approach, which consists of analyzing market transactions for comparable assets, (2) the income approach using the discounted cash flow model, or (3) cost method. Private equity funds also provide audited financial statements. Private equity investments are classified as level 3 of the fair value hierarchy.

Corporate Bonds – Corporate bonds are valued at a price which is based on observable market information in primary markets or a broker quote in an over-the-counter market, and are classified as level 2 of the fair value hierarchy.

Government, Municipal Bonds and Mortgaged Backed Securities – Government and municipal securities are valued at a price based on a broker quote in an over-the-counter market and classified as level 2 of the fair value hierarchy. Mortgage backed securities are valued at a price based on observable market information or a broker quote in an over-the-counter market and classified as level 2 of the fair value hierarchy.

Real Estate – Real estate is comprised of public and private real estate investments. Real estate investments through registered investment companies that trade on an exchange are classified as level 1 of the fair value hierarchy. Investments through open end private real estate funds that are valued at the reported net asset value "NAV" are classified as level 2 of the fair value hierarchy. Private real estate investments through partnership interests that are valued based on different methodologies including discounted cash flow, direct capitalization and market comparable analysis are classified as level 3 of the fair value hierarchy.

Other Fixed Income – Other fixed income is composed of futures contracts, option contracts, swap contracts, and other fixed income derivatives and are based on broker quote in an over-the-counter market and are classified as level 2 of the fair value hierarchy.