Description of Work: The applicant proposes the placement of fill material into jurisdictional
waters within 505 linear feet (It) of Fred Creek (FC) and approximately 1,100 If of a low-flow
channel of Joe Creek (JCLFC), both stream channels are within confluence of the Arkansas River
following the left descending bank. Approximately 18.76 acres of earthen fill material would
consist of mixed rock material and sand to be excavated from within the Arkansas River channel
and distributed to project areas as patt of the improvement project (See Figure I, Enclosure 1 0).
|
Location
|
Sand
|
Soil
|
Rock
|
Concrete
|
Total(cvs)
|
Acres
|
|
ARl
|
2
,875
|
611
|
620
|
|
4
,106
|
2.55
|
|
AR2
|
15
,500
|
4,502
|
2
,200
|
|
22,202
|
2.75
|
|
AR3
|
16,500
|
5,490
|
5,490
|
|
27,480
|
1.42
|
|
AR4
|
5,000
|
996
|
3,000
|
|
8,996
|
0.93
|
|
AR5
|
I
00,100
|
39,929
|
4
,000
|
250
|
144,279
|
9.94
|
|
S02B
(JCLFC)
|
12
,063
|
4
,021
|
4,021
|
|
20
,105
|
0.75
|
|
S03 (FC)
|
1
,133
|
2
10
|
550
|
2,333
|
4
,226
|
0.42
|
|
Project Total
|
153
,171
|
55,759
|
1
9,881
|
2
,583
|
231,394
|
18.76
|
The placement of fi ll material within the Arkansas River and the method of removing the
accumulated sediment is a "discharge" of dredged material. This includes the addition, placement,
or redistribution of dredged or excavated materials within waters of the United States. A total of
approximately 231,394 cubic yards (cys) of earthen material would be used to reclaim land to
construct the casino expansion area. The eroded riverbank would be reformed using a combination
of the adjacent river sand, select fill, topsoil and armoring comprised of manmade stone and
natural stone material, and geotextile fabric for stabi lization. A 3,400 If bank stabilization project
would be constructed using vegetated riprap and would tie into the stabilization work of the Joe
Creek Ecosystem Restoration Project to FC right descending bank and from FC left descending
bank to the end of the project boundary. In FC, the concrete lined channel would be extended
250 If using reinforced concrete or large block system or a similar concrete lined trapezoidal
channel.
The proposal includes the construction of two pedestrian bridges, one vehicular bridge over FC, a
proposed overlook, a boat ramp, an observation area, and a new pedestrian and biking trail that
extends from Joe Creek to the southern end of the property. These bridge construction projects
would be authorized under Nationwide Permit 14 for Linear Transportation Crossings.
The applicant has also proposed to use concrete and reinforced concrete around stormwater outfall
structures made of precast reinforced concrete pipes and box structures.
Work would be done using wheeled and tracked excavation equipment (backhoes, track hoes,
dozers, dump trucks, and front-end loaders), drilling rigs, concrete trucks, concrete pumping
equipment, compactors, and graders.