You Are the Aquatics Manager at H2O Recreation Complex, Responsible

You are the aquatics manager at H2O Recreation Complex, responsible for the recruitment, hiring, and training of the lifeguards and swimming instructors. What suggestions would you make to the H2O Recreation Complex director to ensure that the following job information adequately reflects the responsibilities and KSAOs that the lifeguard/swimming instructor will need to perform the job well? What specific changes should be made to ensure the job description is measurable, valid, reliable, and legally defensible?
LIFEGUARD/SWIM INSTRUCTOR (part-time)
H2O RECREATION COMPLEX-YMCA/YWCA
Northfield, Saskatchewan
H2O Recreation Complex will be offering new swimming, fitness, childcare, day camps, youth leadership, employment, and educational programs beginning this fall. We require part-time lifeguards to join our aquatics team. Lifeguards and swim instructors are the heart of H2O, reporting directly to the aquatic supervisor. Lifeguards and swim instructors will ensure that open, public swim times and swimming programs are fun and operate safely.