HomeMy WebLinkAbout20140300.tiff SITE SPECIFIC DEVELOPMENT PLAN AND USE BY SPECIAL
REVIEW (USR) APPLICATION
FOR PLANNING DEPARTMENT USE DATE RECEIVED:
RECEIPT#/AMOUNT# 1$ CASE#ASSIGNED:
APPLICATION RECEIVED BY PLANNER ASSIGNED: __
Parcel Number 0 4 6 5 - 2 5 - 3 - 0 0 - 0 0 2
(12 digit number-found on Tax I,D.Information,obtainable at the Weld County Assessor's Office,or}vww,co,weId.co.us)
Legal Description Lot B SW 1/4 , Section 25 ,Township 9 North, Range 61 West
Zone District:AG A , Total Acreage:41.376 , Flood Plain:Zone o , Geological Hazard: No ,
Airport Overlay District: NA
FEE OWNER(S)OF THE PROPERTY:
Name:Sterling Energy Investments, LLC
Work Phone# (/20)881-7100 Home Phone# Email
Address: 1200 17th Street, Suite 2850
Address:
City/State/Zip Code Denver, CO 80202
Name:
Work Phone# Home Phone# Email
Address:
Address:
City/State/Zip Code _
Name:
Work Phone# Home Phone# Email
Address:
Address:
City/State/Zip Code
APPLICANT OR AUTHORIZED AGENT(See Below:Authorization must accompany applications signed by Authorized Agent)
Name:Sterling Energy Investments, LLC -Gordon Stevenson
Work Phone if /20-881-1092 Home Phone# Email gstevenson(Nsterlingenergy.us
Address: 1200 17th Street, Suite 2850
Address:
City/State/Zip Code Denver, CO 80202
PROPOSED USE:
Cryogenic facility for the processing of natural gas products.
I (We) hereby depose and state under penalties of perjury that all statements, proposals, and/or plans submitted
with or contained within the application are true and correct to the best of my(our)knowledge. Signatures of all
fee wners of property must sign this application. If an Authorized Agent signs, a letter of authorization from all
fe wne must be included with the application. If a corporation is the fee owner, notarized evidence must be
i ) de i icating that the signatory has to legal authority to sign for the corporation.
i( r�t�� /2-1072-C/S
,Signs ure: Owner or Authorized Agent Date Signature: Owner or Authorized Agent Date
Sterling Energy Investments LLC
CENTENNIAL GAS PLANT
USR Application Package
I. INTRODUCTION
As exploration and production (E&P) companies continue to drill for oil and natural gas, there is a need
for increased infrastructure to gather, process and distribute the natural gas and natural gas liquids
associated with oil well production. Increased natural gas volumes, as well as the siting of recent drilling
facilities, have put a strain on the currently available natural gas gathering and processing systems. To
respond to the need for increased processing and transportation capacity, Sterling Energy Investments
LLC ("Sterling") is proposing to construct, own, and operate the Centennial Gas Plant (CGP) in Weld
County, CO. The plant will treat and process natural gas from existing and new oil wells gathered by
Sterling's Centennial Gas Gathering System.
Applicant's name and Telephone number:
Sterling Energy Investments LLC
Contacts: Gordon Stevenson (720) 881-7092
Applicant Address:
Sterling Energy Investments LLC
1200 17th Street, Suite 2850
Denver, CO 80202
II. USE BY SPECIAL REVIEW QUESTIONNAIRE
The following sections address the requirements of the Use by Special Review (USR) Questionnaire. A
copy of the USR Permit Application Form and Questionnaire Checklist are included in Exhibit A. The
Non-1041 Special Review Permit Application document is provided in Exhibit B, including a complete
description of the Project in Section D.
A. PROPOSED USE OF THE PROPERTY
Sterling's proposed Centennial Gas Plant (CGP) is located approximately one mile north and four miles
west of Keota, in Weld County, CO. Construction will be conducted in phases to achieve maximum
processing capacity. A total of approximately 41.4 acres of pasture land would be affected by the
processing plant site. The proposed use is consistent with the comprehensive county plan to foster
development of the natural resources of Weld County. The land location description is as follows:
Lot B Recorded Exemption No. 0465-25-4 RecX 12-0090
SE/4 SW/4 Section 25 T9N R61W
The CGP processing equipment will treat the natural gas to remove carbon dioxide and to recover
natural gas liquid (NGL) hydrocarbons. The facility will be constructed in phases, subject to availability
of produced natural gas volumes. Phase 1 facilities will process 10 million cubic feet of natural gas per
day (MMCFD). If production volumes warrant, the Phase II facilities will be constructed to treat and
process an additional 25MMCFD o for a total of 35MMCFD at maximum capacity. Dry residue gas
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CENTENNIAL GAS PLANT
USR Application Package
remaining after treating will be compressed and delivered to Southern Star Pipeline or other take away
pipelines for delivery to the national natural gas energy market. Natural Gas Liquids (NGL) recovered
from the gas will be delivered to the Overland Pass Pipeline (OPPL) NGL pipeline for delivery to a
fractionators facility in Bushton, KS, and for subsequent delivery to the national NGL energy market.
A schematic drawing showing equipment layout for both phases of construction/installation is provided
in Exhibit C.
B. CONSISTENCY WITH WELD COUNTY CODE, CHAPTER 22 OF THE COMPREHENSIVE PLAN
The Weld County Comprehensive Plan addresses goals and policies for agriculturally zoned properties,
oil and gas deposits, as well as environmental pollutants that the processing plant may emit. The
Comprehensive Plan also addresses the presence of oil and gas deposits in the County and encourages
the extraction of oil and gas resources that conserve the land and minimize the impact on surrounding
land and the existing surrounding land uses. Oil and Gas Policy 2.8 within Chapter 22 of the Code
further states: "Oil and gas activities should be planned to accommodate current and future subdivision
activities to the extent such development can reasonably be anticipated".
The proposed Project meets the objectives outlined in the Comprehensive Plan without changing the
use of the land surrounding where it is built.
C.CONSISTENCY WELD COUNTY CODE,CHAPTER 23(ZONING)
Pursuant to Section 23-3-20, oil and gas production facilities are allowed as a use by right in A
(Agricultural) Zone Districts. The Project is located entirely within an Agricultural Zone District, and such
zoning allows oil and gas support and service operation such as gas processing plants and compressor
stations. Any impacts to actively cultivated land near the Project will be temporary, and agricultural
operations can return once the facility is operational. Sterling does not expect any impacts to actively
cultivated land due to the Project.
Section 22-2-10 (D) emphasizes the extraction of natural resources as an important part of the
economy of the County. Constructing a gas processing plant contributes to the expansion of the
county's industrial economic base by providing increased capacity to an essential function in the
production of natural gas in the County. Oil and gas facilities are allowed as a use by right in the A
(Agricultural) Zone District. However, oil and gas support and service operations such as a gas
processing plant Site require the approval of a Use by Special Review Permit.
D. CONSISTENCY WITH SURROUNDING LAND USES
The proposed site is located in unincorporated Weld County in an Agricultural Zone District. The area
surrounding the site is dry land pasture. The Project is consistent and compatible with the surrounding
land uses as a use allowed by right under Weld County Code Section 23-3-20.
The compression, treatment, and processing of natural gas produced in Weld County is a necessary
component of marketing this valuable resource. Providing the required treatment will foster the
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USR Application Package
development of an important economic base. The CGP will contribute to the County's tax base with
little or no adverse impact in terms of additional roads or other governmental expenditures
E. PROJECT DETAILS
1. Number of people who will use this site.
The site will be manned by a staff of two to four people on a daily basis. The site will be manned at least
8 hours a day, 7 days a week, and may be manned on a 24 hour basis during initial operations.
2. Number of people proposed to be employed at this site.
Sterling anticipates that the Project will require two to four new permanent employees.
3. Hours of operation.
The Centennial Gas Plant will operate 24 hours a day, 7 days a week, 365 days a year.
4.Type and number of structures to be erected (built)on this site.
Please refer to Exhibit B, Section D.1 for a detailed site description. Please see site plot plans provided in
Exhibit C.
5.Type and number of animals,if any,to be on this site.
There will be no animals associated with the Project site.
6. Kind of vehicles (type,size, weight)that will access this site and how often.
Staff vehicles will include sedans, %-ton pickups, and one-ton pickups, visiting the site once or twice a
day. A bobtail trailer will access the site two to four times a month to haul condensate or water from
the site. NGL trucks may visit the site to offload NGL products if/when the ONEOK Overland Pass
Pipeline is out of service (rarely). NGL trucks (tractor-trailers) may visit the site to deliver NGL products
into storage for delivery to the ONEOK pipeline —Sterling anticipates two trucks per day from Sterling's
Venter facility, and possibly one additional truck per day from third party NGL providers. Approximately
10 vehicles a day total are the anticipated traffic volume following construction.
7.Who will provide fire protection to the site?
The Pawnee Fire District would be dispatched to handle any emergencies at the Centennial Gas Plant
site. The Project will have a water well but no commercial water source; therefore, water or other fire
retardants would be transported to the station if necessary. Sterling will consult with Pawnee Fire
District representatives to address emergency response and fire suppression related concerns.
8.Water source on the property.
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USR Application Package
During construction, bottled water will be provided for construction personnel. Water may also be used
for dust suppression. If dust suppression is required, the water will come from a municipal water
source, and will be transported by water truck to the area where dust control is needed.
A non-potable well will be drilled and used for a septic system. A well permit has been submitted and
approved for this purpose (Exhibit D).
Bottled water will be supplied for staff during operations. Process water will be brought in from
commercial sources and will be stored in a 1,000 gallon tank. Truck traffic for water supply is included in
the anticipated 10 truck per day traffic levels following construction
9.Sewage disposal system on the property.
During construction, the contractor will supply portable sewage disposal units. During construction, a
septic system will be installed for staff use once the Project has been placed in service. Sterling has
engaged an engineering company to design the septic system. Septic system design and permit
application preparation are underway. A sanitary septic system permit will be applied for and obtained
prior to construction (Exhibit E).
10. If storage or warehousing is proposed,what type of items will be stored?
Materials will be stored inside buildings or, in the case of spare piping and valves, neatly staged in
graveled areas.
F. PROPOSED LANDSCAPING FOR THE SITE
No landscaping is planned. The site will be partially graveled inside the fence line and re-vegetated with
native grass in some areas inside the fenced area.
G. PROPOSED RECLAMATION PROCEDURES
Upon successful completion of construction, various disturbed areas will be seeded with native grasses
to encourage vegetation growth and soil stabilization as per County requirements. A site specific
reclamation plan is under development in coordination with Weld County reclamation staff. See Section
D.13 of the Non-1041 Special Review Permit for information on the Project's Decommissioning Plan.
H. STORMWATER DRAINAGE
Sterling's construction contractor will follow a Stormwater Management Plan (SWMP) as guidance to
implement Best Management Practices (BMPs) to minimize soil erosion and water runoff. During
construction, temporary BMPs (e.g., hay bales and silt fences) will be installed to stabilize the disturbed
right-of-way and workspaces. The processing plant site will be properly graded to provide water
maintenance structures and appropriate drainage. Drainage patterns around the site will not be
altered.
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USR Application Package
I. CONSTRUCTION SCHEDULE
Typical plant construction methods will be implemented to construct the Project. The sequence of
events during construction includes:
• Survey—The station workspace limits will be identified and clearly marked prior to construction
activities;
• Clearing and grading as per the site grading plan;
• Install perimeter erosion control/storm water runoff BMP's as per the site SWMP;
• Graveling of travel surfaces and parking areas;
• Equipment (Equipment buildings, process train skids, tank, piping) positioning and lay out;
• Trenching—pipeline trenches will be excavated for necessary interconnect piping;
• Building foundations/supports poured;
• Installation of onsite equipment and piping;
• Facility inlet tie-in to gathering system supply and processed gas take-away pipelines;
• Reclamation or stabilization of disturbed areas;
• Re-seeding of non-graveled areas;
• Perimeter fence and gate installation and seeded to encourage revegetation;
• Facility piping pressure testing as per DOT pressure standards to insure functionality and
integrity.
Construction of Phase I of the CGP is scheduled to begin in the 4th Quarter of 2013 and take
approximately 6 months to complete. Subject to available natural gas volumes, Phase II equipment
installation would begin in the 1st Quarter of 2014, for completion by the 3rd Quarter of 2014.
J. STORAGE AND/OR STOCKPILE OF WASTES
During construction, all liquid and solid waste will be stored and removed for disposal according to
applicable regulations. Temporary sewage disposal units will be placed in areas of active construction,
and will be maintained regularly to prevent water or soil contamination. Any leaks from equipment or
vehicles will be cleaned up in accordance with BMPs, and disposed of at appropriate disposal facilities.
Used lube oil will be transported away from the site using certified transporters to approved disposal.
III. ACCESS INFORMATION
Access to the site for construction activities will utilize CR 100 via WCR 392 off of CO HWY 14. An access
road map is included in Exhibit F. Permanent access to the site will be needed off of WCR 100. The
access permit for the proposed access is included in Exhibit F.
Access driveways to the Centennial Gas Plant (CGP) will be constructed from WCR100 to accommodate
vehicles that are anticipated to access the site during construction and operation of the plant. Sterling's
plant construction contractor will build the access driveways. Contractors will follow safety
recommendations advised by Weld County Public Works Department.
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USR Application Package
Contractors will follow guidelines to ensure the safety of other drivers using any public roadways
including:
• Construction on the access driveways will occur only during the day.
• Appropriate signage will be placed 500 ft. from the construction to warn drivers from both
directions of upcoming construction.
• As a general guideline, vehicles and equipment will not block County roads. If equipment is
expected to temporarily obstruct traffic, cones (and personnel if needed) will be used to direct
traffic around the obstruction.
IV.WATER SUPPLY
See Section II.E.8 of this application.Water for consumption will be supplied by:
Deep Rock Water Co.
2640 California St., Denver, CO 80205
(800) 695-2020
Water for dust suppression and piping testing will be trucked in by the construction contractor from a
municipal water source.
V.SEWAGE DISPOSAL
Portable Sewage disposal services during construction will be provided by:
The construction contractor once the work is awarded -TBD
Sterling will obtain needed sanitary septic permits (Exhibit E).
VI. DEED/LAND OWNERSHIP INFORMATION
See Exhibit G for land ownership for the site. Sterling has completed a recorded exemption process for
creating a new lot for the site and has purchased the lot. The site is located on Lot B, Recorded
Exemption No.0465-25-4 Recx12-0090.
VII.AFFIDAVIT OF INTERESTED LAND OWNERS
See Exhibit H for the listing of surrounding land owners and mineral interests, including affidavits.
VIII. CERTIFICATE OF CONVEYANCE
See Exhibit I for certified certificate of conveyance.
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IX. EMERGENCY CONTACT
Sterling 24 hour Emergency Contact Line 1-877-838-9381
OPPL 24 hour Emergency Contact Line thru Williams Field Services 1-800-635-7400
Southern Star Pipeline 24 hour Emergency Contact Line 1-800-324-9696
See Exhibit J for additional emergency contact information.
X. INTERGOVERNMENTAL AGENCY(IGA) BOUNDARY STATEMENT
The Centennial Gas Plant (CGP) site is not located within a defined IGA Boundary. According to IGA
boundary maps located in Exhibit 19 of the Weld County Code, the closest IGA Boundary, as defined in
Exhibit 19-G, surrounds the city of Eaton, and is approximately 38 miles southwest from the plant
location.
XI. DRAINAGE REPORT
Water quality control structures and drainage across the site are indicated on the site plot plan in Exhibit
C. The site soils and drainage reports are included in Exhibits K and L respectively.
XII.TRAFFIC STATEMENT
The Centennial Gas Plant (CGP) project is planned to begin construction in October, 2013. Construction
activities are expected to last for 6 months, and end by March of 2014. Traffic due to construction would
involve a temporary increase in traffic on CO-392 and Weld County Road 100. It is not anticipated that
dirt will be required to be delivered to site, but some heavy equipment is to be expected, as well as
trucks delivering materials and equipment.
Once construction is complete, CGP traffic level is anticipated to be approximately 10 vehicles per day. .
The plant will send NGL's out via OPPL. Sterling plans to truck approximately 20,000 gallons of NGL's
each day from the Sterling Venter facility to CGP. This would equate to 2 trucks per day. In addition to
this, it is possible that 1 truck per week of 3r° party NGL's would off load to put into Centennial storage
for injection into the liquids pipeline. The only other long term trucking expected at this site is to handle
NGL offload during possible force majeure outages of the OPPL (very rare - possibly once every 2 to 3
years for short periods).
The trucks to/from site will be directed to take CO-392 to County Road 100 in order to mitigate the
effects of trucking on other county roads in the vicinity. A site access map is included in the Weld
County Access Road Information in Exhibit F.
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XIII. WASTE HANDLING PLAN
During construction, all liquid and solid waste will be stored and removed for disposal according to
applicable regulations. Any leaks from equipment or vehicles will be cleaned up in accordance with
BMPs, and disposed of at appropriate disposal facilities. Sterling has contracted with the following
waste handler for haul-away services:
Waste Management
18211 Iris Dr.
Sterling, CO 80524
(970) 384-6300
Temporary sewage disposal units will be placed in areas of active construction, and will be maintained
regularly to prevent water or soil contamination. See Section V of this application for the name and
address of Sterling's sewage disposal contractor.
Sterling Energy containerizes all waste and contracts for its disposal with a government permitted
facility for all wastes that will be generated through operation of the CGP. Sterling will develop a plan
that details waste management and disposal for the site.The plan will outline the operational chemicals
to be stored on-site which may require future disposal.
This plan will ensure wastes generated at CGP are managed according to all local, state and federal
regulations. Further, this plan defines operational chemicals used or stored on site which require
specific disposal methods.This plan is written to provide guidance to site workers to ensure all materials
are properly handled and disposed.
The following materials will be stored at the facility to support operations and have specific disposal
requirements:
• Amine Storage Tank: 1—300 BBL (200 BBL; 12'OD x 10' H)
• Condensate Storage: 1-40,000 Gallons (12' OD x 48' OAL)
• NGL Storage: 5—30,000 Gallons(9' OD x 67' OAL)
• Hot Oil: 1—300 BBL(200 BBL; 12' OD x 10' H)
• Propane: 1—300 BBL(9200 Gallons; 7' OD x 35' OAL)
• Amine: 1-300 BBL (200 BBL; 12' OD x 10' H)
• Lube Oil for Compressors: 1-1,000 Gallons (2000 gallon; 5'-4"x 12' H)
• Cooling Water Makeup: 1-1,000 Gallons(2000 gallon; 5'-4" x 12' H)
• Atmospheric Produced Water: 1-400 BBL(Two 400 BBL; 12' OD x 20' H)
• Used Oil: 1—500 Gallons (2000 gallon; 5'-4" x 12' H)
Sterling will also develop a CGP Spill Prevention, Containment, and Countermeasures Plan (SPCCP) to
outline appropriate actions in the event of a spill.The plan will be specifically developed for CGP prior to
initiation of start-up activities. It will cover secondary containment requirements, response actions, and
waste disposition and disposal in the event of a spill or release. Sterling has procedures in place that will
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USR Application Package
be applied to the specifics of any spill or release resulting from operations. Sterling's SPCC plan will be in
accordance with requirements set forth by the Environmental Protection Agency.
XIV. DUST ABATEMENT PLAN
The Colorado Department of Public Health and Environment (CDPHE) requires an Air Pollution Emission
Notice (APEN) to be filed for projects that disturb 25 or more acres of land. If CGP construction
disturbance will reach this acreage threshold, Sterling will file an APEN with the CDPHE for dust
abatement prior to the start of construction. Common practices during construction include use of
water trucks to sprinkle disturbed ground for dust suppression. Also, a storm water management plan
will be followed to mitigate soil erosion and sediment transport during the construction phase.
Once construction is complete, the site will be stabilized using native vegetation inside the fenced area,
as necessary. Other areas within the fenced boundary will be graveled along with any roadways. If
necessary, a water truck will be used to control dust after construction.
XV. FLOOD HAZARDS
The project is not located in a Flood Zone area.
XVI. GEOLOGICAL HAZARDS
The proposed site is not located within a defined geological hazard area according to the Weld County
Department of Planning Service's Geologic Hazard Area Map of Potential Ground Subsidence Areas in
Weld County.
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I.APPLICATION FOR SPECIAL REVIEW PERMIT
Section 23-2-370 of the Weld County Code requires an Application for a Special Review Permit to
construct a MAJOR FACILITY OF A PUBLIC UTILITY OR PUBLIC AGENCY. The following sections address
the requirements set forth in Section 23-2-370.
A.APPLICANT'S NAME AND TELEPHONE NUMBER
Sterling Energy Investments LLC
(720) 781-7100
B.APPLICANTS ADDRESS
Sterling Energy Investments LLC
Attn: Gordon Stevenson
Executive Vice President- Engineering and Operations
1200 17th Street, Suite 2850
Denver, CO 80202
C. SUMMARY STATEMENT OF THE PROJECT
Sterling Energy Investments LLC ("Sterling") is proposing to construct, own, and operate the Centennial
Gas Plant (CGP) in Weld County, CO to process up to 35 million cubic feet per day (MMCFD) of natural
gas at maximum capacity. The addition of the CGP facility is necessary for processing and delivery of
additional volumes of natural gas and natural gas liquids to the national energy market.
This Project will help to increase the revenues to Weld County by enhancing natural gas production vs.
flaring gas from wells.
C.1. Source,capacity,destination and type of facilities,support structures, lines involved.
See section D.1, below,for a complete description of the Project.
C.2. Number and description of alternative locations or routes considered, with a summary
emphasizing reasons for favoring a particular site or route.
Due to gathering system connections and close access to take-away pipeline locations, the processing
facility is optimally located at its current site. Because of the Landowner's willingness to sell the land for
the approximately 41.4 acre lot on which to build the site, no alternative site locations were pursued.
C.3. Procedures, including reclamation measures, landscaping, buffering techniques or multiple uses,
to be employed in efforts to mitigate any adverse impacts.
See Section II.F, G, and H of the USR Application.
C.4. Size of anticipated workforce, both temporary and permanent.
See Section II.E.1 and 2 of the USR Application. The site will be manned by two to four full time staff.
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C.5. A summary of the proposed water requirements, if any, to include the quality and quantity
needed for each USE, source, storage facilities, points of diversion, treatment system and distribution
system.
See Section II.E.8 of the USR Application.
C.6. A summary of the proposed fuel requirements, if any, to include the type and quantity needed,
source and storage facilities.
Construction equipment and vehicles will receive fuel from mobile fuel trucks as needed. Fuel trucks
and construction equipment will be equipped with spill kits and fire extinguishers, and personnel will be
trained in spill prevention, control, and countermeasures to mitigate any spills that may occur during
refueling operations. Equipment and vehicles will not receive regular maintenance at the construction
site. Any leaks from equipment or vehicles will be cleaned up in accordance with BMPs, and disposed of
properly. The main generator sets will run on natural gas which will be piped to the generators from
the residue gas system.
C.7.A description of the location and method of disposal of all forms of waste.
See Sections II.E.9 and XII in the USR Application.
D. A DETAILED REPORT SHALL BE SUBMITTED WHICH INCLUDES INFORMATION ON THE FOLLOWING
ITEMS:
D.1. A complete description of the facilities, including the source, capacity, destination, and type of
structures.
The CGP will initially process up to 10 MMCFD. The site processing equipment can be expanded to 35
MMCFD of natural gas at maximum capacity, subject to market demand. The CGP will receive
unprocessed gas from existing gas gathering systems and deliver treated natural gas to the Southern
Star natural gas pipeline and natural gas liquids to the Overland Pass Pipeline (OPPL) for delivery to the
national energy market. The site will be manned full time by two to four employees.
The location of the proposed gas processing plant is in Lot B Recorded Exemption No. 0465-25-4
RecX12-0090, Weld County, CO. The approximately 41.4 acre facility site and equipment layout is
shown in Exhibit C of this application.
Natural gas is transported to the facility via a pipeline gathering system through inlet compression
engines. The gas stream is then sent to an amine unit to remove carbon dioxide (CO2). The gas is then
sent to a glycol dehydration unit prior to entering a molecular sieve dehydration unit for removal of
water. The dried gas is then cooled through a propane refrigeration system followed by a cryogenic
natural gas liquid (NGL) recovery skid for removal of NGL products. The NGL products will be sent to
pressurized above ground storage tanks. NGL products will be injected into the nearby OPPL pipeline
system. The residue gas will be metered through a pipeline for offsite sales to the Southern Star Pipeline
system.
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Most natural gas in the Niobrara and adjacent formations requires some form of processing/treating to
render the natural gas marketable for use. This is because certain types of hydrocarbon molecules
entrained in a gaseous form in the majority of Niobrara natural gas, are considered to be contaminates
to most, if not all natural gas transmission pipelines. However,the hydrocarbon molecules considered
to be contaminates to natural gas pipelines, are in fact,very valuable products in other areas of the
energy value chain in a liquid form. Therefore,the overall purpose of a "gas plant" is to produce an
acceptable form of natural gas and liquid hydrocarbon products which will yield a higher market value as
compared to the raw natural gas stream from the wellhead.
A"Conventional" gas plant can take many forms. "Cryogenic" is simply a form of conventional gas plant
and refers to the temperature at which the plant operates. A gas plant of virtually any type, is usually a
combination of a number of"unit operations" to achieve given outputs for a set of inputs. When
selecting technologies to utilize,the composition and present "state" of the inlet stream provides a clue
to the available outlet products available. Through an iterative process utilizing modern modeling
software, a range of technologies are evaluated and a selection is made based upon initial and ongoing
investment costs, operating and maintenance costs, product yield, product markets and corresponding
product prices. The vast majority of gas plants built and in operation today are based upon a distillation
process where the inlet feedstock is cooled and distilled in a trayed or packed column/tower. In
simplest terms, cryogenics refers to the magnitude of cooling that is accomplished in the process prior
to introduction to the distillation tower. The distillation tower separates light hydrocarbons, like
methane and ethane, from heavier hydrocarbons like propane and butane. This distillation tower has
two primary outlets, a gaseous"residue"gas, primarily composed of methane and ethane, and a liquid
product, called "natural gas liquids", or NGLs, whose primary components are ethane, propane and
butane. The natural gas liquids condense during the process of being cooled and are separated from the
methane/ethane stream in the distillation tower.
The plant we seek to construct utilizes an "expander/compressor" and associated equipment, to cool
the gas to less than minus 100 degrees Fahrenheit (-100 F). This degree of cooling promotes a higher
level of recovery of NGLs from the inlet stream. Other types of cooling technology include refrigeration
and Joules-Thompson, or JT. Gas plants can utilize one or all of these various technologies in the course
of cooling/distilling the gas stream. Our plant, in addition to an expander, will also have supplemental
refrigeration to aid in cooling and a JT valve in the event the expander is out of service.
Natural gas-fired compressor engines are used for the facility inlet compression, refrigeration system
and to compress the residue gas from the NGL recovery skid.
The facility will store produced condensate in one (1) pressurized 400-barrel (bbl) tank and produced
water will be stored in two (2) 400-bbl atmospheric storage tanks.
A thermal oxidizer (TO) will be used as primary control for emissions from the amine unit and
dehydration unit. As a backup these emissions can be controlled through a process flare in the event
the TO is not operational.
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An elevated process flare will be installed at the CGP facility to handle process upsets or during
maintenance periods. Under normal operating conditions there will be no process streams routed to
the flare.The flare stack would be approximately 100 feet high.
A communications tower will be installed at the CGP facility to handle communications with the facility.
This communications tower is expected to be less than 35 feet high.
Phase I equipment and buildings will include the following:
• One (1) Amine Unit
• One (1) Dehydration Unit
• Two (2) natural gas fueled Generator Engines
• Two (2) Inlet Compression Engines
• Two (2) Residue Compressor Engines
• One (1) Propane Compressor Engine
• Valves, Flanges and Associated Equipment
• One (1) Propane Refrigeration Unit
• One (1) Cryogenic Processing Unit
• One (1) Slug Catcher
• One (1) Production Scrubber
• One (1) Filter Separator
• One (1) NGL Stabilizer Unit /Electric Bath Reboiler
• One (1) Hot Oil Heater
• One (1) Amine Reboiler
• One (1)TEG Dehy Reboiler
• One (1) Pressurized Condensate Storage Tank
• Two (2) Water Storage Tanks
• Five (5) Pressurized NGL Storage Tanks
• One (1) Thermal Oxidizer
• One (1) Flare
• PLC/Controls/Communications and Power Equipment
• Truck Loading/Unloading Rack
• Internal access roads
• Water well (non-potable)
• Leach Field/Septic System
• Office Building
• Warehouse/Shop Building
The site has been designed with the provision for additional processing equipment to increase
the capacity to 35MMCFD if needed in the future (by adding equipment to handle an additional
25MMCFD of processing capacity).
Phase II will include the additional following equipment:
• One (1) Amine Unit
• One (1) Dehydration Unit
4
• Five (5) Inlet Compression Engines
• Two (2) Residue Compressor Engines
• One (1) Propane Compressor Engine
• Valves, Flanges and Associated Equipment
• One (1) Propane Refrigeration Unit
• One (1) Cryogenic Processing Unit—25MMCFD
• One (1) Hot Oil Heater
• One (1) Amine Reboiler
• One (1)TEG Dehy Reboiler
• Two (2) Water Storage Tanks
• Eleven (11) Pressurized NGL Storage Tanks
D.2.A complete analysis of the alternative routes or sites considered,to include in each case:
N/A. The CGP site is located on lands that were available for purchase and in proximity to gathering
system pipelines and take away pipelines.
D.2.a. Reasons for consideration
N/A
D.2.b.Types of agricultural land and other land use affected
The site is located in AG zoned lands currently used as dry land pasture.
D.2.c. Construction cost of the proposed alternatives
The anticipated cost of construction of the CGP is approximately $30 million for Phase I and
approximately$23 million additional for Phase II.
D.2.d. Impacts on mineral resources
The CGP will enhance production of natural gas associated with oil wells. Sterling anticipates little
impact to other mineral resources.
D.2.e. Impacts on wildlife habitat
Land use at the selected route is dry land pasture. No wetlands or sensitive environmental areas are
proximal to the site. No trees, shrubs, or non-grass vegetation will be impacted. Once construction is
complete, the area surrounding the gas processing plant inside the fence boundaries will be restored to
pre-construction conditions. Large wildlife use that was temporarily displaced during construction may
not be able to return due to fencing of the gas processing plant site.
D.2.f. Impacts on historical, archaeological,and scenic resources
5
Sterling does not anticipate encountering undiscovered historical or archaeological artifacts. If artifacts
are discovered during construction, Sterling will alert the appropriate authorities to determine the best
method for protecting the finds. Preliminary observations do not indicate any historical or
archaeological artifacts.
D.2.g.Visual impacts created by aboveground facilities
The facility buildings and above ground structures will be painted to match the landscape. Site lighting
will be shielded and directed towards the ground. Lighting cut sheets are included in Exhibit M.
D.2.h.A description of any geologic or flood hazards which could adversely affect the development
N/A- None anticipated.
D.2.i.Advantages and disadvantages of the alternatives considered
N/A
D.2.j. Copy of agreement with mineral owners
Sterling will work with the County to provide notice to all mineral owners pursuant to C.R.S. §24-65.5-
103 and as per county requirements. It is not anticipated that any mineral owners will be affected by
the Project. Appropriate surface use agreements will be negotiated if any mineral owners raise any
objections concerning the Project.
D.2.k. Copy of agreement with owners of any ditch located on or adjacent to the site
N/A-There are no commercial ditches on or adjacent to the lot affected by the proposed gas processing
plant.
D.3 A description of the preferred alternative route or site and reasons for its selection.
The CGP site location was selected due to proximity to existing take away natural gas and natural gas
liquid pipelines and the landowner's willingness to sell the needed site area.
D.4 Procedures to be employed in mitigating any adverse impacts of the proposed routes or sites.
Sterling will implement the following procedures to minimize adverse effects during construction and
operation of the gas processing plant:
• Topsoil if needed will be segregated from subsoil during grading activities for use in future
reclamation;
• Sterling will implement Storm Water Management Plan (SWMP) Best Management Practices
(BMP's) that mitigate erosion and sediment transport off site;
• Travel lanes and parking surfaces at the compressor site will be graveled and/or paved post
construction to help stabilize and control erosion; and
• Sterling has applied for and will secure an Air Permit from the CDPHE—Air Quality Control Board
and will operate under those conditions (Exhibit N).
6
D.5. An outline of the planned construction and operation schedule, to include the number of stages
and timing of each.
See Section 11.1 of the USR Application.
D.6. Information of any public meeting conducted,to include the location, date,time, attendance and
method of advertising.
No public meetings pertaining to this project have been held.
D.7. A description of hazards, if any, of fire, explosion and other dangers to the health, safety, and
welfare of employees and the general public.
Natural gas processing facilities have inherent fire and potential explosion dangers. The Centennial gas
plant will be engineered, designed, and constructed in accordance with current industry safety and
technical codes, rules, procedures, and best available practices. The facility will be built in accordance
with Process Safety Management (PSM) rules and procedures as required for processing and handling of
hazardous materials under OSHA. The goal of a PSM program is to ensure that gas processing plants
(and other oil and gas facilities) operate safely. Sterling employs highly trained operators and
contractors and maintains close working relationships with all emergency response personnel.
D.8. A description of emergency procedures to be followed in case of a reported failure or accident
involving the proposed facility.
Sterling will staff an office at the gas processing plant site with personnel who can provide the
appropriate response to emergency situations and direct safety operations as necessary. After hours
emergency contact numbers for the CGP facility and take away pipelines are the following:
• Sterling 24 hour Emergency Contact Line 1-877-838-9381
• OPPL 24 hour Emergency Contact Line thru Williams Field Services 1-800-635-7400
• Southern Star Pipeline 24 hour Emergency Contact Line 1-800-324-9696
The Centennial Gas Plant will be designed to operate in an automatic mode with very little input from
operations staff. As a consequence, there will be no "gas control" office to "control" activities at the
plant facility. The majority of the activities that will take place at the plant will be maintenance activities
during a daily 8 hour shift. The plant will be unattended for 16 hours during a 24 hour period. There are
a number of process control shutdowns that are beyond the scope of this document. The design of the
process control shutdowns will be accomplished in accordance with industry practice, and will seek to
limit or shutdown processes prior to exceeding process parameters. These process parameters will be
set well short of safety limits to provide a cushion for operations. When a process parameter is
exceeded, a call out system will notify the on-call operator to respond 24 hours a day. Depending on
the particular process limit exceeded, the plant will either reduce capacity or shutdown.
7
Sterling has operated a facility of this type in Logan County near Sterling, Colorado without incident for
over 12 years. This same facility has been in operation continuously for over 40 years. Our engineering
and operations staff have considerable experience in the design and operations of facilities of this type
in Colorado, and across the United States,Canada, and Mexico.
D.9. A description of the method or procedures to be employed to avoid or minimize the impacts on
irrigated agricultural land.
No irrigated agricultural lands are affected by the proposed gas processing plant site location.
D.10. A discussion of how the proposal conforms to the guidelines of Chapter 22 of this Code and any
other applicable code provisions or ordinance in effect.
All properties affected by the Project are located within an Agricultural Zone District. Article II, Division 4
of the Weld County Code permits oil and gas support and service facilities to be constructed in an
Agricultural Zone District. As such, the Weld County Comprehensive Plan in Chapter 22 of the Weld
County Code addresses goals and policies for agriculturally zoned properties and oil and gas deposit
production. Section 22-5-90 of the Comprehensive Plan states: "The most efficient and environmentally
friendly way to transport crude oil is by pipeline, rather than by truck. Transportation of the product by
pipeline has less impact on County roads. Less truck traffic also benefits air quality in the area, another
benefit that comes from more pipeline infrastructure". Oil and Gas Policy 2.8 within Chapter 22 of the
Code further states: "Oil and gas activities should be planned to accommodate current and future
subdivision activities to the extent such development can reasonably be anticipated".
The proposed Project meets the objectives outlined in the Comprehensive Plan without changing the
use of the surrounding land where it is built. While the CGP is operational, agricultural activities may
resume surrounding the fenced area.
D.11. A discussion of the proposal for maintenance of the facility so as to prevent dust, soil erosion
and the growth of noxious weeds.
During construction of the Project, water trucks will be used for fugitive dust suppression as necessary.
If the 25 acre disturbance acreage threshold is met, Sterling will prepare and file a Fugitive Dust Control
Plan for Land Development and APEN with the CDPHE. Sterling will not commence construction of the
Project until the required permits are obtained.
Sterling and its contractors will follow the SWMP to prevent soil erosion during construction, and will
install permanent BMPs and will gravel the site once construction is finished to encourage soil
stabilization during operation of the Project. Graveling the site will also help to reduce the risk of
noxious weed infestation. Should noxious weeds be identified on the ROW, Sterling will implement
control measures.
D.12. A drainage report outlining the method of preventing surface runoff from exceeding the
historical flow.
8
During construction of the Project, BMPs will be installed in accordance with the SWMP to prevent
surface water runoff from eroding soils and exceeding the historical flow. After construction, during
operation of the Project, the surface will have been returned to preconstruction contours, and
permeability will not change. Surface runoff is expected to remain identical to historical flow, and
Sterling will install water quality control structure(s) to help control run off from the historical flows.
D.13. A Decommissioning Plan. Adequate financial assurance to cover the decommissioning of the
facility may be required as a condition of approval of the Decommissioning Plan.
Sterling has adequate financial resources to construct, operate, and, following use, decommission the
CGP. Upon decommissioning, the CGP equipment will be removed and the site reclaimed in accordance
with all federal,State (i.e. Colorado Oil &Gas Conservation Commission), and local regulations.
9
WELD COUNTY ACCESS PERMIT
7�° c°�ti
Weld County Public Works Dept. v .l Phone: (970) 304-6496
1111 H Street After Hours: (970) 356-4000
P.O. Box 758 -o• ` o: Emergency Services: (970) 304-6500 x 2700
Greeley, CO 80632 t Nit, Inspection: (970) 304-6480
Permit Number: AP12-00388
Issuance of this permit binds applicant and its contractors to all requirements,provisions,and ordinances of Weld County,Colorado,
Project Name: RECX12-0090 Expiration date: 04/29/2013
Applicant Information: Property Owner Information:
Name: Stuart Asselin, EVP Name:
Company: Sterling Energy Investments, LLC Company:
Phone: 720-881-7098 Phone:
Email: sasselin@sterlingenergy.us Email:
Location: Proposed Use:
Access is on WCR: 100 Temporary:
Nearest Intersection WCR: 100 &WCR: 89 Single Residential:
Distance From Intersection: 15840 Industrial:
Number of Existing Accesses: Small Commercial:
Planning Process: RE RECX12-0090 Oil&Gas: D
Large Commercial:
Road Surface Type&Construction Information: Subdivision:
Road Surface: Gravel Field(Agricultural
Culvert Size&Type: Only)/Exempt:
Start Date: 01/01/2013 Finish Date: 03/31/2013
Materials to Construct Access: Gravel &Cattle Guard
Required Attached Documents Submitted: Access Pictures:
Traffic Control Plan: Yes Certificate of Insurance: Yes
A copy of this permit must be on site at all times during construction hours
Daily work hours are Monday through Friday DAYLIGHT to%HOUR BEFORE DARK(applies to weekends if approved)
Approved MUTCD traffic control/warning devices are required before work begins and must remain until completion of work
Special Requirements or Comments
Please utilize the existing access for Lot A.The two new access points are conditional approval of the USR for the gas plant
site.
Approved by: C Janet Carter,Weld County Public Works Date: 10/31/2012 tact Print Date-Time: 10/31/2012 10:55:02AM Report ID: PW00008v002 Page 1 of 1
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STERLING ENERGY INVESTMENTS LLC
TRAFFIC ROUTING
gNIAL GAS PLANT-WELD COUNTY,COLORADO
DATE: 7-6-2012 I REV: 0
FOR COMMERCIAL SITES, PLEASE COMPLETE THE FOLLOWING INFORMATION
BUSINESS EMERGENCY INFORMATION:
Business
Name: CENTENNIAL GATHERING SYSTEM Phone: (970) 522-5101
Address: 17528 CR 21 City, ST, Zip: Sterling, CO 80751
Business
Owner: Sterling Energy Investments LLC Phone: 720-881-7100
Home Address: 1200 17th Street, Suite 2850 City, ST, Zip: Denver, CO 80202
List three persons in the order to be called in the event of an emergency:
NAME TITLE ADDRESS PHONE
Randy Barton Operations Superintendent 17598 CR 21, Sterling, CO 80751 970-520-3288
Martin Hill Plant Manager 17598 CR 21, Sterling, CO 80751 970-520-3286
Sterling Emergency Number(24 hours) 877-838-9381
Business
Hours: 24 hours Days: 7 days a week
Type of Alarm: None Burglar Holdup Fire Silent Audible
Name and address of Alarm Company: N/A
Location of Safe: N/A
MISCELLANEOUS INFORMATION:
Number of entry/exit doors in this building: N/A Location(s):
Is alcohol stored in building?N/A Location(s):
Are drugs stored in building?N/A Location(s):
Are weapons stored in building?N/A Location(s):
The following programs are offered as a public service of the Weld County Sheriff's Office. Please indicate the
programs of interest. Physical Security Check Crime Prevention Presentation
UTILITY SHUT OFF LOCATIONS:
Main Electrical: N/A
Gas Shut Off: N/A
Exterior Water Shutoff: N/A
Interior Water Shutoff: N/A
EXHIBIT M
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