Geosynthetics August/September 2019 - 13

lot more than just the final steps. Everyone
involved must keep in view the critical
nature of delivering a safe, finished water
supply to constituents' taps and all the
steps that must be taken to keep a large
facility operating in accordance with state
and federal requirements.
The punch list provides a great opportunity for everyone to view the complexity of the work that's been conducted.
The review can provide inspiration for
finding new efficiencies, cost savings, or
design and construction approaches for
future designs.
MWD gathered all relevant project
partners to assess the site and its systems,
review tests and confirm the strategies
used to finish up any remaining items.
For Palos Verdes, no substantial work
was left, but as with other sites in Southern
California's water infrastructure, there was
an emphasis on ensuring that the site met
the stringent requirements of California's
Department of Water Resources and its
Division of Safety and Dams. The on-site
operations and maintenance program,
overseen by MWD, monitors all activities
inside the fence of water storage reservoirs.
This includes not only the systems focused
on in this article series, but also access control, rodent control, erosion control and
general site maintenance. They are all part
of the operations and maintenance effort.
A written plan is to be followed by MWD
employees and all outside contractors.
When these various aspects were
addressed, Raven CLI Construction
(which fabricated and installed the
geosynthetic lining and floating cover
systems) performed its final work: reinspection and cleaning.

A clean finish
The extra cleaning and inspection stage
helped evaluate how the full cover performed during the disinfection fill. While
the filling operation helped the team

FIGURE 3 A view of the installation crew flushing rainwater collection
troughs in the clean-out phase

observe the rise of the cover, this additional inspection enabled the crew to test
components as they carefully reversed
the process.
As the reservoir water level was lowered, the rainwater troughs were flushed
out. Piece by piece, the 14 hatches were
inspected, as were the numerous pumps,
vents and attachments. The process took
a six-person crew five days to complete
(Figure 3). All water used for washing
down and cleaning out debris was supplied from hoses attached to the fire
hydrants at the top of slope.
www.GeosyntheticsMagazine.com

13



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Geosynthetics August/September 2019

Table of Contents for the Digital Edition of Geosynthetics August/September 2019

Geosynthetics August/September 2019 - Cover1
Geosynthetics August/September 2019 - Cover2
Geosynthetics August/September 2019 - 1
Geosynthetics August/September 2019 - 2
Geosynthetics August/September 2019 - 3
Geosynthetics August/September 2019 - 4
Geosynthetics August/September 2019 - 5
Geosynthetics August/September 2019 - 6
Geosynthetics August/September 2019 - 7
Geosynthetics August/September 2019 - 8
Geosynthetics August/September 2019 - 9
Geosynthetics August/September 2019 - 10
Geosynthetics August/September 2019 - 11
Geosynthetics August/September 2019 - 12
Geosynthetics August/September 2019 - 13
Geosynthetics August/September 2019 - 14
Geosynthetics August/September 2019 - 15
Geosynthetics August/September 2019 - 16
Geosynthetics August/September 2019 - 17
Geosynthetics August/September 2019 - 18
Geosynthetics August/September 2019 - 19
Geosynthetics August/September 2019 - 20
Geosynthetics August/September 2019 - 21
Geosynthetics August/September 2019 - 22
Geosynthetics August/September 2019 - 23
Geosynthetics August/September 2019 - 24
Geosynthetics August/September 2019 - 25
Geosynthetics August/September 2019 - 26
Geosynthetics August/September 2019 - 27
Geosynthetics August/September 2019 - 28
Geosynthetics August/September 2019 - 29
Geosynthetics August/September 2019 - 30
Geosynthetics August/September 2019 - 31
Geosynthetics August/September 2019 - 32
Geosynthetics August/September 2019 - 33
Geosynthetics August/September 2019 - 34
Geosynthetics August/September 2019 - 35
Geosynthetics August/September 2019 - 36
Geosynthetics August/September 2019 - 37
Geosynthetics August/September 2019 - 38
Geosynthetics August/September 2019 - 39
Geosynthetics August/September 2019 - 40
Geosynthetics August/September 2019 - 41
Geosynthetics August/September 2019 - 42
Geosynthetics August/September 2019 - 43
Geosynthetics August/September 2019 - 44
Geosynthetics August/September 2019 - 45
Geosynthetics August/September 2019 - 46
Geosynthetics August/September 2019 - 47
Geosynthetics August/September 2019 - 48
Geosynthetics August/September 2019 - 49
Geosynthetics August/September 2019 - 50
Geosynthetics August/September 2019 - 51
Geosynthetics August/September 2019 - 52
Geosynthetics August/September 2019 - Cover3
Geosynthetics August/September 2019 - Cover4
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