Langan International Oil & Gas Qualifications

Confidential Refinery Modernization Project

OVERVIEW
The multi-billion dollar modernization effort involves fast-tracked geotechnical and seismic engineering studies for the modernization of this large refinery located on the Pacific coast. The ground motions and tsunami microzonation studies performed by Langan and our subconsultant were consistent with the definitions of the levels of earthquake “shaking” in the Peruvian code. The team performed both probabilistic seismic hazard analysis (PSHA) and deterministic analysis to develop the spectral acceleration estimates and tsunami wave runups required as part of the microzonation study. Langan performed an extensive two phased geotechnical study consisting of more than 100 test borings to 30-meter deep and 100 25-meter deep cone penetrometer tests. An array of geophysical testing was also performed to complement the borings and evaluate the subsurface conditions.

Location
Peru

Client
Confidential

Services
Geotechnical
Earthquake/Seismic


Antero Clearwater Facility

OVERVIEW
Langan provided environmental permit services for Antero's Clearwater Facility (ACF), a new state-of-the-art centralized water treatment facility, which included assisting Antero in obtaining an individual National Pollutant Discharge Elimination System (NPDES) permit.  As part of the NPDES application package, the Langan team provided GIS mapping of stormwater outfall locations, prepared a comprehensive and site-specific Stormwater Pollution Prevention Plan (SWPPP)/Groundwater Protection Plan (GPP) and conducted NPDES training for Antero personnel and facility operators.

Location
Greenwood, WV

Client
Antero Resources

Service
Environmental Compliance


Former Gas Plant Remediation & Ecological Restoration

OVERVIEW
Langan developed and gained regulator agreement on a final remedy for a former major oil corporation gas plant site located in Southern California. The agreed upon path to closure utilized a background analysis and risk assessment to identify attainable remedial cleanup standards for constituents of potential concern. By taking a face-to-face approach with regulators (DTSC, Region 9 EPA, Central Coast RWQCB, County of Santa Barbara) and presenting a strong argument for a risk-based strategy to closure, Langan was able to achieve an agreed upon 1 to 2 year path to closure that was 27 years (case opened in 1988) in the making with two previous consultants.

Location
Santa Barbara, CA

Client
Confidential

Service
Environmental


Majorsville to Hopedale Pipeline

OVERVIEW
The project consisted of installing 45 miles of ten-inch diameter pipe connecting MarkWest's Majorsville, West Virginia processing plant to a fractionator line in Hopedale, Ohio. The majority of the pipeline was installed using open-trench methods; HDD method was used to install the pipeline at four crossing locations. Langan developed, coordinated and implemented geotechnical investigations, performed trenchless feasibility analyses and designs, and prepared bid packages for various crossings.

Location
West Virginia and Ohio

Client
MarkWest Liberty Midstream & Resources, LLC

Service
Geotechnical


Gas Compressor Stations

OVERVIEW
Langan provides integrated services to multiple clients for compressor station sites. As a part of assessing site feasibility, the Langan team provides site layout and grading analyses along with stream and wetland delineations. After site selection, final construction documents are prepared by Langan including site layout, grading and drainage design, erosion and sediment control, and stormwater management design. Additionally, our geotechnical team evaluates subsurface conditions and our transportation team permits driveways and access roads. Langan also obtains air quality permits and other environmental compliance permits.

Location
Multiple Locations

Client
Confidential

Services
Site/Civil
Geotechnical
Natural Resources & Permitting
Environmental Compliance


Multiple Marcellus Shale Gas Production Well Pads

OVERVIEW
Langan successfully designed and permitted multiple natural gas production well pad sites located throughout West Virginia.  We provided the following integrated services at these pad sites: natural resource survey and permitting for wetlands waterways, threatened and endangered species impact resolutions, civil design and erosion and sediment control permitting, geotechnical investigation and design, environmental water quality (pre-drill) investigations, well plat preparation, site survey, and transportation design and permitting.

Location
West Virginia

Clients
EQT Production Company
Seneca Resources Corporation
EXCO Resources
Mountaineer Keystone

Services
Site/Civil
Geotechnical
Natural Resources & Permitting
Traffic & Transportation
Traditional Surveying


Freshwater Impoundments for Natural Gas Production

OVERVIEW
Langan supports multiple clients in the design and permitting of freshwater impoundments storing water to be used for hydrofracing natural gas production wells. Langan's team completes field and desktops reviews to evaluate site conditions and to develop the most efficient permitting strategy possible. Designs are created with the goal to maximize storage capacity without triggering the need for dam permits. Langan also designs site layouts, earthwork, and stormwater control for the sites and secures needed erosion and sediment control permits.

Location
Multiple Locations

Client
Confidential

Services
Site/Civil
Geotechnical
Natural Resources & Permitting


Gathering & Transmission Pipelines

OVERVIEW
Langan's integrated services aid clients in the successful design and permitting of gathering and transmission pipelines. Langan provides boundary surveys along pipeline routes and survey stakeouts of each route's limits and centerline. Langan's environmental team also provides wetland/stream delineation for the pipeline routes and submits permit applications for the U.S. Department of Environmental Protection's approval. Langan's geotechnical team performs extensive testing of subsurface conditions along routes.

Location
Multiple Locations

Client
Confidential

Services
Natural Resources & Permitting
Geotechnical
Traditional Surveying


Mariner West Pipeline Construction

OVERVIEW
Langan provided site/civil and geotechnical engineering design and construction services for a 4.4-mile section of an ethane pipeline. This section is located between the north and south shores of the Ohio River near Vanport Station. Langan provided services for horizontal directional drilling (HDD) design and conventional installation as well as for the construction of the pipeline and several access roads. Langan also provided boundary surveys of all properties that will contain the pipeline right-of-way.

Location
Beaver County, PA

Client
Sunoco Logistics (SXL)

Services
Site/Civil
Geotechnical
Traditional Surveying


Natural Gas Production Facilities

OVERVIEW
Langan provides integrated site/civil, natural and cultural resource, environmental, geotechnical, and survey services for major natural gas producers with production, gathering, and transmission facilities throughout Pennsylvania and West Virginia. Specific services include erosion and sediment design/permitting, wetland and waterway survey and permitting, threatened and endangered species conflict resolution, pre-drill water testing, well plat surveying, and geotechnical design for pipeline crossings.

Location
Multiple Locations in PA and WV

Client
Confidential

Services
Site/Civil
Geotechnical
Natural Resources & Permitting
Traditional Surveying


Natural Gas Production Well Site

OVERVIEW
Langan designed and permitted this natural gas production facility which consisted of a permanent access road, production well pad, aboveground storage tank pad and a freshwater impoundment.

Location
Amwell Township, Washington County, PA

Client
Confidential

Services
Site/Civil
Natural Resources & Permitting
Data Management


Tennessee Gas Pipeline – Wetland Mitigation Projects

OVERVIEW
Langan performed wetland delineations at each proposed wetland mitigation site and coordinated with the US Army Corps of Engineers and Pennsylvania Department of Environmental Protection to determine existing wetland/upland boundaries. Langan utilized GIS based mapping tools to prepare and submit Wetland Mitigation Plans to the regulatory agencies for review and approval.

Location
Bradford and Wayne Counties, PA

Client
Evergreen Environmental

Services
Natural Resources & Permitting
Data Management


Selected Projects