Geosynthetics August/September 2019 - 39
TG-FCS can accommodate aggressive
settlement due to the high elongation
values of its geomembrane component
(i.e., 300% for LLDPE).
Once dewatering is finalized, the client can simply fill in any areas of aggressive settlement with lightweight fill and
then install a mini-cap over the filled
area, tying the geomembrane into the
existing liner using an extrusion weld
and then covering it with the engineered
synthetic turf, which can also be fusionwelded to the existing turf via a hot-air
gun. Once the geomembrane and turf
are in place, the patch can be infilled
and will blend in effectively with the
surrounding area. An aerial view of the
installation approximately two years
after completion of the cover system,
including the settlement area, can be
seen in Figure 4.
Adoption by
additional owners
The results of the TG-FCS and subsequent performance for the closures
exceeded the client's expectations, resulting in the selection of this method for
additional closures in the U.S. by owners
facing similar challenges at manufacturing facilities having waste with similar
physical characteristics and at coal power
generation utilities' pond closures.
burden of the final installation; and elimination of water quality threats due to
the inherent low turbidity of the system's
runoff water. However, it was the implementation of a design and construction
approach that was as innovative as the
tufted geosynthetic that provided the most
compelling benefits to the projects' stakeholders. By focusing on odor elimination
and choosing to close before dewatering,
this project team differentiated itself in a
meaningful and compelling way. G
FIGURE 4 Settled areas of tufted geosynthetic
final cover system (two years after installation)
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Conclusion
The ongoing development of innovative
technology, such as the TG-FCS, provides
the opportunity to approach traditional
applications in new ways. In this example,
the elimination of the soil burden associated with a traditional final cover system
provided the following direct benefits:
acceleration of project schedule; elimination of tens of thousands of hours of
truck and equipment activity and resulting
carbon emissions; near-zero maintenance
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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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