Cortech Engineering treats 'bad' water and makes it useable.
Cortech Engineering is the premier distributor for pumps and process equipment
for Southern California, Central California, and Southern Nevada since 1987.
tank and 4.0 MG tank located at the southeast and northwest portions
of the system, respectively.
Distribution: Main Abandonments and
Installations for Continuous Flow
The distribution system developed in phases, starting in the late
1800s and saw significant development and expansion post World
War II, followed by systematic slow growth since the 1960s. Through
the years, new subdivisions required upsized distribution mains, and
often new mains were added to the system while other pipes remained
to serve adjacent areas. Today, growth is almost exclusively limited to
infill and redevelopment within the city limits. Areas of the system
with redundant mains and water quality challenges were identified
for main abandonment. Abandoning one of the redundant mains
and transferring services to the other main eliminated split flow and
increased the demand on the remaining pipe, thereby facilitating
increased flow and reduced water age.
Another area that consists of residential areas with large residential
parcels intermixed with vast vineyard agricultural parcels was identified
as having insufficient demands in the winter while the 12-inch pipe
feeding the area was required to meet peak summer irrigation demands.
This area was problematic under Stage 2 because, although it had very
low DBPs during the summer, sampling in the winter months indicated
concentrations that would have been too high to be offset to maintain
compliance under the locational running annual average requirement.
This area borders a pressure zone and the city was able to install a three
quarter-inch pipe connecting the higher pressure zone 4 to the lower
pressure zone 3 to back-feed a continuous flow of water into the lower
zone. The continuous flow moves approximately 40,000 gallons of
water per day, which is enough to prevent stagnation of water and the
formation of DBPs in this former trouble spot.
Another area of the system has exhibited high levels of DBPs and
brings inherent challenges due to location, which is plumbed off of
the transmission main approximately three miles north of the city
extending down a quiet country lane. Most demands off this pipe are
residential homes that are not occupied full-time, thereby making
demands inconsistent and nearly non-existent for periods of time.
This is particularly challenging during the winter months, when there
are typically no irrigation demands to move water through the pipe.
The area is flat, with little drainage, and hydrant flushing is challenging
due to NPDES discharge requirements and the presence of nearby
creeks. During the first year of Stage 2 implementation, this location
exceeded the running locational average for Haloacetic Acids (HAAs)
with an average of 62 ppb, just over the 60 ppb compliance limit. The six
customers that were affected were notified in accordance with California
Department of Public Health requirements.
The city has maintained compliance with Stage 2 of the DBPR in every
aspect, with the exception of the aforementioned area that affected six
customers. However, due to the higher DBP levels that occur in winter
months when the source water is rich in organics, the DBP annual
averages are not far below the compliance levels of 80 ppb THMs and 60
ppb for HAAs, so more action must be taken. The city plans to perform
tank cleaning of the Hennessey Treatment Plant clearwell and install a
tank mixer and aeration system. In addition, an aeration system will be
added to the 4.0 MG tank in the northwest side of the system, in order
to remove the DBPs that have increased post-treatment while traveling
through the transmission system. Localized problem areas will continue
to be studied for low-cost solutions and strategic flushing as well as
pipeline configuration changes to decrease water age in these areas. S
We turn your water problems into water solutions.
• Well water treatment
• Nitrogen and Nutrient removal
• Iron & Manganese removal
• Selenium treatment
• Heavy Industrial Waste Water Treatment
• Water Reuse
• Produced Water Treatment
• Ozone and UV Treatment Systems
• Complete Pumping Packages and Systems
CORTECH ENGINEERING, LLC
22785 Savi Ranch Parkway, Yorba Linda, CA 92887
Phone: (714) 779-0911 or (661) 322-9800 | E-Mail: firstname.lastname@example.org