2021-08-06 Callimanis 1
Comments regarding DEIR Section 4.15 Utilities and Service Systems
In the CVWD Water Assessment, Coral Mountain surf pool replenishment is listed at 39 million gallons yearly.
CVWD does not have knowledge of coefficients to account for evaporation due to Wave Action at the time of their
Water Assessment. In addition, the increasing number of days of wind action in the Coachella Valley will cause
additional evaporation. (If required, Alena Callimanis can provide additional information on the number of high wind
days in Coachella Valley). Water evaporation calculations by CVWD are based on a standard factor of 1.2 for moving
water and pan evaporation numbers from 2005. In 2005, when these calculations concluded, we only had 99 days
over 100 degrees.
Therefore, in order to determine the amount of water required, the DEIR must look at the following
information:
1) The World Surf League, which purchased Kelly Slater wave technology, wrote that on very hot days at Lemoore
Surf Ranch, the pool lost 250,000 gallons a day. It is valid to accept this as a minimum number to be used for La
Quinta, because Lemoore is in Kings County where the evapoTranspiration rate is lower than our area. Since the La
Quinta evapoTranspiration Rate would dictate a higher rate of evaporation than Lemoore, we are actually looking at
higher than 250,000 gallons per day of evaporation.
Lemoore had 27 days over 100 degrees in 2020 with hottest temperature of 107 degrees. La Quinta had 143 days
over 100 degrees in 2020. The first part of a new calculation can use 250,000 gallons a day times 143 hot days. This
equals 36 million gallons lost to evaporation in 143 days. This does not account for an additional 222 days of the
year. But considering we had 56 days over 110 degrees in 2020, it should be reasonable to expect that on the days
over 110 degrees, evaporation should be higher than 250,000 gallons. Should we calculate that at 300,000 gallons?
Especially considering our ETo is higher than Lemoore.
What about the rest of the 222 days of the year? We had 51 days over 90 degrees as part of that 222 days.
The DEIR must use numbers that reflect actual wave pool evaporations and not outdated evaporation methods. It
must include calculations based on known evaporations from wave pools.
2) The DEIR must account for the additional windy days which add to evaporation. Many sites on line provide ways
to account for actual wind evaporation. This must be included.
Respectfully,
Alena Callimanis
81469 Rustic Canyon Drive
La Quinta, CA 92253
919 606-6164
acallimanis@gmail.com