HomeMy WebLinkAbout1.05 Reclamation planDivision of Reclamation Mining & Safety
Permit Application
RTZ INDUSTRIAL
SAND & GRAVEL MINING OPERATION
GARFIELD COUNTY, COLORADO
6.4.1 EXHIBIT E — Reclamation Plan
Intmduntion
The RTZ Industrial mining plan proposes to use 131.558 acres for the gravel
mining activities, of which 40.7 acres will actually be mined. The mining and
reclamation is to proceed in three phases with reclamation of each phase
following closely behind each mining phase. All of the affected land is to be
reclaimed. Reclamation will include (1) contouring and stabilization of slopes, (2)
placement of topsoil and soil amendments, (3) seeding and planting and (4)
follow -up monitoring and management to ensure adequate soil cover and
noxious weed suppression (See attached Exhibit E, Reclamation Plan).
Topsoil Preservation
Topsoil will be removed prior to mining each phase and will be stockpiled in
mounds on the western end of the property. A temporary seed mixture, following
the recommendations of the Natural Resource Conservation Service (NRCA)
(See attached NRCA seed recommendations), will be applied by broadcasting to
help stabilize the soil against wind and water erosion. When broadcast seeding
is used the seeding rate will be doubled per NRCA recommendations. Certified
weed free hay or straw will be used for mulch, except where the slope exceeds
10 percent. In those instances an agronomy blanket is to be used.
Final Contouring
The Reclamation Plan Map, Exhibit F, shows the proposed final contours. Per
Construction Materials Rule 3.1.5 (7), final slopes will be no greater than 3:1
(H:V) for 5 feet above and ten feet below the water table. Most other slopes will
be 2:1. The base of the pit is expected to be at or near bedrock, which in most
areas will be approximately 24 feet below ground surface.
Final grading is to be accomplished by the excavation equipment onsite. All
grading is to be completed in a manner to control erosion and siltation of the
affected lands. All backfilling and grading shall be completed as soon as feasible
after the mining process. Areas that are to be backfilled will be compacted to
provide stable slopes. if farm equipment is to be used for topsoil mixing and for
planting, final contours will be compatible with these activities.
Division of Reclamafion Mining S Safety
Permit Application
Topsoil Redistribution
The fall season is the best planting time to provide optimum plant survival.
Topsoil will be taken from the stockpile and redistributed to disturbed areas after
slope stabilization has occurred and in line with the planting seasons. Three to
six inches of topsoil and soil amendments will be mixed using a disk harrow or
other such equipment.
Seeding and Planting
Seeding of the NRCS- recommended dry land grasses will be undertaken during
prime planting seasons, October 15 through April 34. Seed mixtures
recommended by the NRCS, as stated in the attached letter, will be used. The
letter includes recommendations for rates and methods for seeding and planting.
These recommendations will be followed as closely as possible to provide the
best conditions for maximum plant survival rates.
Seeding of the larger areas will be completed during the first prime planting
season following the completion of mining, contouring and topsoiling of each
phase of the project. Planting may proceed prior to the end a phase of the project
if contouring and topsoiling are completed and it is in line with sound engineering
practices. Seeding will be accompanied by straw or hay mulch or its equivalent.
Planting will be accomplished using a seed drill using a drill spacing of 7 — 10
inches. Planting depth will be '/ to %z inch. If the seed is broadcast the seed
coverage will be twice that shown in the NRCS recommendations and mulched, if
needed.
Follow -up Monitorina and Management
Management of the reclaimed area will proceed according to NRCS guidelines.
RTZ will monitor the plant growth progress and add soil amendments, including
fertilizer, if needed. Grasses will be mowed for at least the first two years after
reclamation of each phase to establish regenerating stands of grasses and to
control weed infestation.
Noxious Weed Control
RTZ Industrial will control noxious weeds using the recommendations of the
Colorado Noxious Weed Management Act and the Garfield County Vegetation
Management Department. Weeds listed by Garfield County as noxious are
shown below:
Common Name Scientific Name
Leafy Spurge (Euphorbia esula)
Russian Knapweed (Acroptilon repens)
Division of Reclamation Mining & Safety
Permit Application
Yellow Starthistle
Plumeless Thistle
Houndstongue
Common Burdock
Scotch Thistle
Canada Thistle
Spotted Knapweed
Diffuse Knapweed
Dalmatian Toadflax
Yellow Toadflax
Hoary Cress
Salt Cedar
Oxeye Daisy
Jointed Goatgrass
Chicory
Musk Thistle
Purple Loosestrife
Russian Olive
(Centaurea solstitalfs)
(Carduus acanthoides)
(Cynoglossum officinale)
(Arctium minus)
(Onopordum acanthium)
(Cirsium arvense)
(Centaurea maculosa)
(Centaurea diffusa)
(Linaria dalmatica)
(Linaria vulgaris)
(Cardaria drabs)
( Tamarix parviflora, Tamarix ramosissima)
(Chrysanthemum leucantheum)
(Aegilops cylindrical)
(Cichorium intybus)
(Carduus nutans)
(Lythrum salicaria)
(Elaeagnus angustifolia)
Management of the weeds will be by physical removal, chemical spraying or by
other means as recommended in the state and county programs. Monitoring and
control of new possible infestations will also be followed according to the
recommendations of Garfield County Vegetation Management Department.
U.S. Department of Agriculture L2! FINAL RECLAMATION CO -ECS -5
Natural Resources 180.12.11
Conservation Service July 2004
Grass Seeding: Part I - Planned
Planner:
Producer:
MLRA:
Stephen R. Jaouen Date:
Speclos
Critical - South West Exposure - Native
Item Num:
34B
C ontra ctfAq reement #:
Rate
(PLS lblac) I
Seeding Operation;
Acres to be seeded:
Seedbed Prep:
Planting Rates:
Planting Depth (in.):
Drill Type:
Drill Spacin (in.:
10
Cropland: non - irrigated
Oct 15 - April 30
1/4-1/2
grass
1 7 -10"
Fertilizer:
Pounds per acre recommended
(planned and applied pp requires practice standard 590)
Nitrogen (N)
Phosphorus (P)
Potassium (K)
18.0
Bottlebrush squirreltail
Weed Control:
[fates;
Description:
20
(planned and applied requires practice,standard 595)
10.0
Cover:
Amount:
Description:
Application Method.
1x.018.0
18.0
25
Seed Recommendations:
Speclos
Variety
(table B: PMTN 59)
PLS Mates
IrrlNon -Irr
PLSIAc to use
(100 %)
% in mix
Rate
(PLS lblac) I
Acres to be
seeded
Total PLS
Indian ricegrass
8.0- 12.014.0.5.0
12.0
15
1.8
10.0
18.0
Bottlebrush squirreltail
9.014.5
9.0
20
1.8
10.0
18.0
Western wheatgrass
1x.018.0
18.0
25
4,0
1010
40,0
Gaileta grass (caryopsis)
4:012.0
4.0
15
O.B
10.0
6.0
Streambank wheatgrass
11.015.5
11.0
10
1.1
10.0
11.0
Bluebunch wheatgrass
12.01 6.0
17.0
15
1.8
10.0
18.0
Totals 84.0 100.0 11.1 10.0 111.0
Notes: Use adapted improved varieties and cultivars in the following order of preference, when available:
1. certified name varieties, 2. named varieties, 3. common seed
PLS = Pure Live Seed
Do+Mhle drilled seeding rate to obtain broadcast seeding rat.:
For critical area seedings use the Irrigated rate.
Certified Planner: Pate:
U.S. Department of Agriculture CO -EC5 -5
Natural Resources =FOR STOCKPILE STABILIZATION 180 -12 -11
Conservation Service July 2004
Grass Seeding: Part l - Planned
Planner:
Stephen R. Jaouen & Dennis D"dson Date:
Producer:
South West 9 -12in CRITICAL INTRODUCED
MLRA:
34b ContractfA reement # Item Num:
Seeding Operation:
Acres to be seeded:
10
Total PLS
Seedbed Prep:
Cropland: �-
16.018.0
Planting Oates:
Oct 15 - April 30
4.8
Planting Depth tin.}:
1/4-1/2
Siberian wheatgrass
Drill Type:
grass DRILLED
11.0
Drill Spacing (in.):
7 -10"
Fertilizer:
Pounds per acre recommended
(planned and applied requires practice standard 590)
Nitrogen (N)
Phosphorus (P)
Potassium (K)
10
0.4
1010
4.0
Russian wildrye
Weed Control:
Dates:
As Needed
(planned and applied requires practice standard 595)
mechanical orchemical
10.0
Description:
Bottlebrush squirrellail
Cover:
Amount:
minimum 2000 Ibs.lac.
10
0.9
Description:
9.0
Use certif €ed weed free straw with tackafter or crimp disk. On
slopes over 10% use agronomy blanket, follow manafactures
Application Method:
installation directions.
Seed Recommendations:
Species
Variety
(table 6: PMTN 59)
PLS Rates
lrrlNon -Irr
PLS/Ac to use
(100 %)
% in mix
Rate
(PLS Iblac)
Acres to be
seeded
Total PLS
Western wheatgrass
Anriba
16.018.0
16.0
30
4.8
10.0
48.0
Siberian wheatgrass
Vavilov 11 or Vavilov
11.015.5
11.0
30
3.3
10.0
33.0
Orchardgrass
Piaute
4.012.0
4.0
10
0.4
1010
4.0
Russian wildrye
Bozoisky 11 or Bozolsky
10.015.0
10.0
20
2.0
10.0
20.0
Bottlebrush squirrellail
Wapiti or Meeker
9.014.5
9.0
10
0.9
10.0
9.0
Totals 50.0 100.0 11.4 10.0 114.0
Notes: Use adapted improved varieties and cultivars in the following order of preference, when available:
1. certified name varieties, 2. named varieties, 3. common seed
PLS = Pure Live Seed
I.imible drilled seeding late to obtain hrrradcast seeding rate.
For critical area seedings use the irrigated rate.
Certified Planner: Date: