Geosynthetics April/May 2022 - 31

Summary
The 70 Ranch Raw Water Reservoir is in
a difficult area for water retention with
minimal cohesive soils, overall sandy
soils and bedrock, the latter susceptible
to high seepage rates. The 170-acre (69ha)
reservoir was successfully lined with
a geosynthetic liner system that will hold
valuable irrigation water for many years
in an otherwise dry region of the eastern
Colorado plains.
The liner system was designed and
constructed with large factory-fabricated
fPP-R panels to reduce construction
time in both summer and winter,
reduce wrinkles for soil cover placement,
allow rapid earth cover scheduling in
large areas and reduce on-site CQA/
CQC. The large 45-mil (1.1-mm) fPP-R
panels on the slopes were sized for fulllength
slope placement and tie-in to the
bottom 30-mil (0.8-mm) fPP-R. In addition
to reduction in installation time
and soil placement, on-site CQA/CQC
and NDT, the entire reservoir was tested
using ELL survey for final acceptance of
the liner system.
The 70 Ranch Raw Water Reservoir
is the largest fPP-R prefabricated
geomembrane lined impoundment in
North America.
References
Civil Resources LLC. (2014). " 70 Ranch reservoir-
Preliminary geotechnical investigation and design
alternatives, " Frederick, Colo., March.
Civil Resources LLC. (2016). " 70 Ranch dam and
reservoir-Contract documents and technical
specifications C 2041, " Frederick, Colo., February. G
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31

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Geosynthetics April/May 2022

Table of Contents for the Digital Edition of Geosynthetics April/May 2022

Geosynthetics April/May 2022 - Cover1
Geosynthetics April/May 2022 - Cover2
Geosynthetics April/May 2022 - 1
Geosynthetics April/May 2022 - 2
Geosynthetics April/May 2022 - 3
Geosynthetics April/May 2022 - 4
Geosynthetics April/May 2022 - 5
Geosynthetics April/May 2022 - 6
Geosynthetics April/May 2022 - 7
Geosynthetics April/May 2022 - 8
Geosynthetics April/May 2022 - 9
Geosynthetics April/May 2022 - 10
Geosynthetics April/May 2022 - 11
Geosynthetics April/May 2022 - 12
Geosynthetics April/May 2022 - 13
Geosynthetics April/May 2022 - 14
Geosynthetics April/May 2022 - 15
Geosynthetics April/May 2022 - 16
Geosynthetics April/May 2022 - 17
Geosynthetics April/May 2022 - 18
Geosynthetics April/May 2022 - 19
Geosynthetics April/May 2022 - 20
Geosynthetics April/May 2022 - 21
Geosynthetics April/May 2022 - 22
Geosynthetics April/May 2022 - 23
Geosynthetics April/May 2022 - 24
Geosynthetics April/May 2022 - 25
Geosynthetics April/May 2022 - 26
Geosynthetics April/May 2022 - 27
Geosynthetics April/May 2022 - 28
Geosynthetics April/May 2022 - 29
Geosynthetics April/May 2022 - 30
Geosynthetics April/May 2022 - 31
Geosynthetics April/May 2022 - 32
Geosynthetics April/May 2022 - 33
Geosynthetics April/May 2022 - 34
Geosynthetics April/May 2022 - 35
Geosynthetics April/May 2022 - 36
Geosynthetics April/May 2022 - 37
Geosynthetics April/May 2022 - 38
Geosynthetics April/May 2022 - 39
Geosynthetics April/May 2022 - 40
Geosynthetics April/May 2022 - 41
Geosynthetics April/May 2022 - 42
Geosynthetics April/May 2022 - 43
Geosynthetics April/May 2022 - 44
Geosynthetics April/May 2022 - Cover3
Geosynthetics April/May 2022 - Cover4
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https://www.nxtbook.com/ata/geosynthetics/geosynthetics-february-march-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-december-2023-january-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-october-november-2023
https://www.nxtbook.com/ata/geosynthetics/geoysynthetics-august-september-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-june-july-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-april-may-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-february-march-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-december-2022-january-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-october-november-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-august-september-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-june-july-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-april-may-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-february-march-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-december-2021-january-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-october-november-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-august-september-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-june-july-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-april-may-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-february-march-2021
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https://www.nxtbook.com/ifai/geosynthetics/1020GS
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