AWARD DESCRIPTION AND AGREEMENT FOR
PERFORMANCE SHARE AWARDS
GRANTED UNDER THE
ARCH CHEMICALS, INC. 1999 LONG TERM INCENTIVE PLAN
The terms and conditions of the Performance Shares (as defined below) are contained in the Award Certificate
evidencing the grant of such shares, this Award Agreement (as defined below) and in the Arch Chemicals, Inc.
1999 Long Term Incentive Plan (the "Plan") and such resolutions, rules and policies previously or hereinafter
adopted by the Compensation Committee of the Board of Directors of Arch Chemicals, Inc. from time to time.
As used herein:
"Award Agreement" means this Award Description and Agreement.
"Measurement Date" means with respect to a Performance Cycle, the last day of the second calendar year of the
Performance Cycle and the last day of the third calendar year of such Performance Cycle.
"Participant" means a Salaried Employee granted an award of Performance Shares under the Plan.
"Payment Schedule" means with respect to a Performance Share, such Performance Share's schedule as set forth
in Exhibit I hereto with respect to the Performance Cycle to govern determination of the Payment Value of such
"Payment Value" means with respect to a Performance Share at any given time, the portion, if any, of such
Performance Share which a Participant has earned at such time under the applicable Payment Schedule during
the Performance Cycle relating to that Performance Share.
"Performance Cycle" means with respect to Performance Shares, a period of three fiscal years (beginning with
the fiscal year in which such Performance Shares are granted) over which such Performance Shares are to be
earned in accordance with the Payment Schedule; provided a Performance Cycle shall end upon full payment of
the Performance Shares relating thereto.
"Performance Goal" means with respect to a particular Performance Share the particular goal established by the