2021-08-06 Callimanis 6
I have significant concerns about the undercalculation of the use of chlorine at the Wave
Basin. With our excessively high temperatures, the risk of warmer water means more
chlorine demand. Both living and non-living contaminants are more prevalent in warmer
water. Algae, bacteria and brain-eating amoebas,
for instance, are living contaminants that chlorine must kill. Warmer water means those
microorganisms can reproduce more rapidly, therefore problems like algae and bacteria are
more prevalent in the summertime. To kill any living organism, chlorine needs a certain
amount of contact time (CT). Hotter days mean more non-living organics in the water, like
sunscreen and body oils. Between these organics and the living contaminants like algae
and bacteria, warm water has a higher chlorine demand than cold water.
For example, dosing at 5ppm/day, chlorine consumption could be 1,100lbs/day of 68%
briquettes.
This is a significant amount of chlorine that needs to be kept on site. What are the
precautions that are being taken to safely house this significant amount of chlorine? To
keep it cool?
I am concerned that the filtration systems will not be able to circulate the water an adequate
amount. In our excessive high temperatures, if full pool circulation through the filtering
system takes significantly longer than once per day, there is a high risk of not properly
removing all contaminants. This poses a danger to the health and safety of surfers and
people in the pool.
I would like to understand more fully in the EIR how the developer will address the chlorine
and filtration required at the excessively hot water temperatures found here (pool
temperatures have been between 93 and 97 degrees, with no cooling relief overnight). This
is a big risk to the health and safety of all surfers/people in the water, that must be
addressed.
Respectfully,
Alena Callimanis
81469 Rustic Canyon Dr
La Quinta, CA 92253
919 606-6164