HomeMy WebLinkAbout4-203.E.18 Reclamation PlanArticle 4-203.E.18
Reclamation Plan
Encana Oil & Gas (USA) Inc
K19NE Storage Facility
(Laydown Yard)
OA Project No. 014-2797
encana
Encana Oil and Gas (USA) Inc.
Operator # 100185
K19NE Lavdown Yard
Surface Reclamation Plan
Location ID: 335338
NESE Section 19 T6S R92W
Garfield County
Site Description:
The existing well pad is a 5.3 acre disturbance. The land surface is fee (Encana), with fee minerals
(Encana). The dominant vegetation community in the lease area can be characterized as sagebrush
shrublands. The average annual temperature for Rifle, CO is 47.75 F, with an average precipitation
accumulation of 11.61 inches, with somewhat similar averages expected for this site. The existing
surrounding land use is rangeland, and the site elevation is 5,500 feet.
Soils Description:
The USDA National Soils Cooperative website was used to identify boundaries of soils mapping units.
The site resides within the Arvada loam mapping unit, which averages 6-20% slopes; the Potta loam
unit, which averages 3-6% slopes; the Potts-Ildefonso complex, which averages 12-25% slopes; and the
Torriothents-Rock outcrop complex, which is classified as steep.
Pre -Disturbance Vegetation Composition:
Ocular assessment for canopy cover on near -by undisturbed land is 35%.
Known weed infestations:
There are no known or identified Colorado List A or B weed infestations at this location
Management of Waste Material:
Before reclamation earthwork is initiated, qualified Environmental personnel will complete a site -
assessment for the purpose of identifying soil impacts resulting from current and historic activities on
the pad. The site -assessment includes collection of field notes and a photographic record of site
conditions. Soil samples are collected from the footprint of removed production equipment, from any
visibly stained soil, and wherever stormwater accumulations may concentrate contaminants. Collected
soil samples are analyzed for compliance with Colorado Oil and Gas Conservation Commission (COGCC)
Table 910-1 constituents of concern.
If laboratory analysis identifies hydrocarbon contaminated soil, impacted material will be excavated
using heavy equipment and transported to an offsite facility for disposal. All remediation and disposal
activities will be directed by qualified Environmental personnel using field screening techniques, verified
by laboratory analysis, and in compliance with COGCC 900 Series Rules. Removal of contaminated
material will be reported to the landowner and the COGCC.
Access Road:
There are no existing well pads or public permitted access beyond this well. The access road associated
with this pad is the entrance on the West side. It will be decommissioned and is included in the
reclamation area. Pre-existing roads to the West and North will remain in place.
Recontouring:
Re -contouring will start with pulling the fill material back to the cut and blending with the natural slope
of the area. Micro drainages will be re-established to allow natural flow. The surface cover and size
distribution of exposed rock will not exceed pre -disturbance site conditions. Any gravel will be removed
from the working surface prior to re -contouring.
If the topsoil pile is present, it will be spread evenly across the reclaimed pad. If a topsoil stockpile is not
present, we will use the soil at the bottom of the fill side of the location. On older pads, prior to topsoil
storage practices, all topsoil was pushed to the bottom of the pad and covered with fill. We will make
every effort to save and distribute any available topsoil found.
Re-establish and stabilize drainage features:
The goal for stormwater management on this location will be to stabilize soils on the reclaim and to
prevent excessive erosion, such as slope or soil instability, subsidence and or slumping. All structural
BMPs, such as culverts and ditches, will be removed during final reclamation. The site will be
maintained to keep the location free of any trash or construction debris.
Seedbed Preparation and Seeding:
All seed beds will be prepared by contour ripping to 6-10" in depth. Contours will be shaped to natural
repose of the reclaim surface. Seeding will take place within 24 hours of completion of the dirt work.
Seed depth will be drilled to a minimum depth of 0.25" and a maximum of 0.50". Soil amendments
that are recommended by the BAR will be applied.
Encana will drill where possible or broadcast and drag on steeper slopes where drilling is not safe.
Encana also would like to keep all available options open such as Hydro -seeding, seeded wattles and
erosion blankets along with new technology to improve on the success of re -vegetation of the site.
Establish desired self-perpetuating plant community:
The anticipated seed mix for this location is listed below. The recommended application rate is 24
lbs/acre at drill rate. Double rate will be used for broadcast seeding. However, based upon the soil
conditions determined by the BAR soil analysis, another seed mix may be better suited for the location if
needed.
Common Name
Scientific Name
Variety
Pounds Pure Live Seed
(PLS) per acre
Grasses
Slender Wheatgrass
Elymus trachycaulus
Revenue
3.49
Pubescent Wheatgrass
Thinopyrum intermedium
Luna
2.96
Western Wheatgrass
Pascopyrum smithii
Rosana
2.97
Sideoats Grama
Bouteloua curtipendula
El Reno
2.44
Thickspike wheatgrass
Elymus lanceolatus
Critana
1.91
Intermediate Wheatgrass
Thinopyrum intermedium
OAHE
1.90
Galleta
Pleuraphis jamesii
Viva
1.91
Russina Wildrye Bozoisky
Psathyrostachys juncea
VNS
1.10
Idaho Fescue
Festuca idahoensis
VNS
0.80
Perennial Ryegrass
Lolium multiflorum
VNS
0.86
Indian Ricegrass
Achnatherum hymenoides
Rimrock
0.56
Alkali Sacaton
Sporobolus airoides
VNS
0.33
Total PLS
21.23
Fencing:
If needed, Encana will install BLM standard wildlife friendly fence installed at perimeter of reclaim
disturbance, to reduce the potential for herbivory impacts to the germinating and establishing desired
species.
Manage Invasive Plants:
Through the annual site visits, noxious and invasive weeds will be identified, inventoried and treated by
licensed contracted herbicide applicators. Encana will monitor, control and reduce the spread of
noxious and invasive weed species within Encana's disturbances as determine in the Colorado Noxious
Weed Act and rules pertaining to the administration and enforcement of the Colorado Noxious Weed
Act.
Reclamation Monitoring and Reporting:
State regulations and Encana's Best Management Practices require routine site visits and active
management over construction activities, along with annual reclamation reporting requirements. At a
minimum, the location will be visited every 14 days during active construction and monthly thereafter
until the vegetation has reached 70% cover of pre -disturbance levels. Once final reclamation has been
reached, vegetation establishment is 80% cover of pre -disturbance levels, and Encana has received the
approved Final Abandonment Notice (FAN) from COGCC, any wildlife friendly fence present will then be
removed.
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COGIS - Surety Detail
COMPANY DETAIL REPORT for Surety ID: 2009-0011
ENCANA OIL & GAS (USA) INC - #100185
370 17TH ST STE 1700
DENVER , CO 80202-5632
USA
SURETY DETAIL INFORMATION
Surety ID:
2009-0011
Status:
ACTIVE
Operator Number:
100185
Bond Amount:
$25,000.00
Instrument:
INSURANCE
Instrument Number:
105189968
Coverage:
BLANKET
Bond Type:
SURFACE
Limitation:
0
Deposit Number:
PDPA Number:
Received Date:
2/12/2009
Approved Date:
3/12/2009
Maturity Expire Date:
FA Provider Number:
200097
FA Provider Name:
TRAVELERS CASUALTY AND SURETY COMPANY OF AMERICA
Deposit Date:
Release Request Date:
N/A
Release Date:
N/A
http://cogcc.state.co.us/[1/13/2015 3:34:15 PM]