Refinery Property. In 1913, Amoco began working adjoining to the Midwest and Franco
properties. Eventually, Midwest Oil Company took management of Franco and by 1928, Midwest was
purchased by and integrated into Amoco. The former Amoco Refinery operated until 1991 and
in 1998 Amoco Corporation merged with British Petroleum to develop into BP Corporation North
America Inc., hereinafter referred to as BP.
The early course of models at the refinery consisted of mainly batch and coke stills that separated
crude oil into useable merchandise. Different batch processes produced and treated lube oils and
finished waxes, and removed sulfur odor from gasoline. These models and processes together with
boiler homes, pump homes, and the railroad automotive loading facility, constituted the majority of the early
operations. Within the late 1940, a fluid catalytic cracking unit was constructed, adopted within the mid-
1950s by the ultraformer and alkylation models. The pipestill, central boiler house and lube
refining units have been constructed in the early 1960s and were repeatedly upgraded as new
technologies developed. At the peak of production (circa 1987) the former refinery processed
a median of roughly 48,000 barrels of oil per day. In its final year in operation, output
from the previous refinery included: fuel fuel (1450 barrels per day (BPD)); liquid propane gasoline
(300 BPD); motor/aviation gasoline (14,seven-hundred BPD); fluid cracking unit coke (780 BPD); heavy
gasoline oil (four hundred BPD); kerosene and distillates (eleven,300 BPD); asphalt (500 BPD) and residuum
(1800 BPD).
ENVIRONMENTAL Considerations
Hydrocarbon and metals contamination from refinery operations has been recognized in the soils
and groundwater in and round the previous refinery. Twelve models have been recognized where
past wastes were managed, and there are an additional fifteen areas recognized the place
environmental impacts may be current. The closest natural water body is the North Platte River,
which bisects the north and south properties. The previous refinery additionally discharged process water
to the Soda Lake inlet basin from 1957 by way of 1990. Soda Lake is positioned 2 to three miles
northeast of the Refinery Property.
CORRECTIVE Motion
BP regulatory history at the former Amoco Refinery in Casper, Wyoming began in 1980 when
BP submitted a RCRA Half A permit application designating the property as an interim status
facility under federal hazardous waste facility laws with the EPA. In 1998, the WDEQ assumed
the responsibility for requiring BP to maneuver forward with corrective motion at the location. A
collaborative course of was used to make investigation, danger assessment and cleanup choices for
the positioning. This collaborative course of allowed the local authorities, the WDEQ and BP to have
open technical discussions and required the WDEQ to make corrective action choices in
consideration of public comments. This also supplied a forum for each party to grasp and
handle each other issues and particular wants during every step of the corrective motion
course of, slightly than WDEQ and BP reaching decisions and presenting them for public evaluate
and remark after the very fact.
In January 2002, the WDEQ and BP signed a Remedy Settlement after reaching cleanup
agreements with neighborhood buy in and assist. The Remedy Agreement includes treatment
choices developed for three separate areas; Treatment Choice #1 South Properties Space
(which includes the Refinery Property); Remedy Decision #2 North Properties Area and the
North Platte River; and Remedy Choice #three Soda Lake Area.
The remedy decisions outline the cleanup necessities for each of the properties intimately;
highlights embody:
Set up of a six thousand foot lengthy steel sheet pile (subsurface) barrier wall and
hydraulic properly system to contain and take away subsurface contaminants that had the
potential to migrate and influence the North Platte River;
Source Elimination together with removing of the subsurface pipe, waste items, soils which have the
potential to impression groundwater, and removal of free part hydrocarbons from
groundwater;
Removing of contaminated soils that exceed threat-primarily based standards protecting of site users
and animals;
Development of a Corrective Action Administration Unit (CAMU) as a permanent
engineered containment system for remediation wastes;
An elaborate groundwater restoration system including a water treatment system that
makes use of wetlands to take away contaminants; and
A demonstration venture designed to increase the likelihood that a expertise suitable for
remediation of localized persistent source areas shall be obtainable within the event the
treatments chosen don’t perform according the performance criteria.
Since signing the Treatment Agreement, the WDEQ and BP have continued to collaborate on
design, operation, monitoring and maintenance work plans and completion reports required by
the remedy choices utilizing a work group idea developed while doing the formal
collaborative process. The oversight work group has met frequently to discuss and resolve
technical issues.
VOLUNTARY REMEDIATION PROGRAM and REUSE
In 2000, BP was the first facility accepted into WDEQ Voluntary Remediation Program (VRP).
Collaborating in the VRP allows volunteers to obtain liability assurances corresponding to a ovenant not
to suefrom the WDEQ, and likewise allows the WDEQ to contemplate future land use when making
cleanup selections with the proviso that the native authorities is willing to institutionalize the
property as a Use Control Area (UCA). A UCA is an institutional management developed underneath
WDEQ VRP legislation that restricts the long run use of a property. The city of Casper and Natrona
County were prepared to designate BP properties as a part of a UCA, giving the WDEQ the
flexibility to contemplate a cleanup based on risk to industrial/commercial and recreational users of
the property. The treatment selections also mandate other institutional controls in order to prevent
exposure to subsurface soils (during cleanup) in areas (Soil Administration Overlay District) that
exceed danger based mostly requirements and to forestall water use (Groundwater Use Restriction Area) till
the groundwater meets drinking water standards.
All through the corrective action course of and each time doable, BP has integrated cleanup
systems and remediation necessities with reuse. Examples of this integration is a kayak course
within the North Platte River that bolsters the hydraulic containment system on the Refinery
Property, building of wetlands and therapy ponds as water features on an 18 hole golf
course, and property growth in the Platte River Commons and Salt Creek Enterprise Park.
Remediation activities have been initiated and accomplished in the North Properties Area, South
Properties Space and within the Soda Lake Space. A few of these activities embody the installation of
the barrier wall and operation of the groundwater elimination system along the wall (to make sure
hydraulic gradient and stop releases to the river from the South Properties Space), removing of
source supplies together with subsurface pipe, waste items, and contaminated soil, construction of
the CAMU, operation of the groundwater restoration system and completion of the
demonstration challenge (use of surfactants to target localized source areas).
In the North Properties Space, the only pending remedial implementation activity is the
implementation of a biosparge remedy system positioned within the Eastern Terrace. The
implementation of the biosparge system is on hold pending an analysis of its
effectiveness. The analysis and path ahead proposal shall be accomplished in 2014.
In the South Properties Area, there are several pending remedial actions. The
construction of a Passive Bioventing system and two protective barrier zones are nonetheless
being discussed between BP and the WDEQ. These discussions will lead to an
implementation of an effective remedial various that can guarantee residual hydrocarbon
targets are met in a timely method.
In the Soda Lake Area all remedial activities have been constructed.
ENVIRONMENTAL INDICATORS
Environmental Indicators (EIs) are an EPA measure used to find out if contamination is being
mitigated at or from services. RCRA authorized States, such as Wyoming, make the
dedication whether or not a facility has met the EIs, and that data is reported to EPA.
