Visit our Tetra Tech booth #7 at Coastal GeoTools February 6-9 in Charleston, SC. Refer to for additional information.

Our Geomatic Technologies Staff will be attending the International LiDAR and Mapping Forum (ILMF) in Denver, CO February 13-15. Please visit for additional information.

NOAA Coastal Geospatial Services

The National Oceanic and Atmospheric Administration (NOAA) selected Tetra for a multiple-award, indefinite delivery, indefinite quantity contract to support the Office for Coastal Management’s (OCM) Digital Coast program. Tetra Tech will use innovative collection methods to acquire, analyze, and process geospatial data to address critical coastal issues such as sea level rise, coastal resiliency, sustainable land use, and marine planning. Tetra Tech also will provide technical GIS support services to support green infrastructure development ad creation of sustainable solutions to reduce the impact of rising seas and climate change on coastal shorelines ($49M ceiling over 5 years).

ASPRS UAS Symposium

Tetra Tech Geomatics staff will be attending the ASPRS UAS Mapping Symposium in Palm Springs, CA September 12-14. The symposium will provide participants with opportunities to get up close and in person with the latest in UAS (Unmanned Aerial Systems) technology for professional mapping applications. Our Geomatics team now includes a UAS Operator and we are embracing the new UAS platforms and technology.

ESRI International User Conference

Tetra Tech will be exhibiting at the ESRI International User Conference in San Diego June 27-July 1. Come stop by our booth #2424. 16,000 GIS users, managers and developers. 300 moderated sessions. 450 hours of technical training. 300 software vendors. Inspirational keynotes. Competitions to test your skills. One-on-one sessions with Esri technical and professional support staff. All of this in one place for one week. Plan to attend and learn what's new in GIS technology and data, network with your peers, and stay connected to the pulse of this innovative industry.

Sujoy Roy made a presentation at the Department of Water Resources DSM2 User Group Meeting on “Evaluating Salinity Trends in the Delta Using Data from 1922-2012.”

The location of the low salinity zone in San Francisco Bay where the bottom salinity is 2 parts per thousand (ppt) (termed as X2 and reported as the distance in kilometers from Golden Gate), has been used as the basis for outflow management in the estuary. There is great interest in understanding how the low salinity zone in general, and the X2 position in particular, has changed over time under different conditions of hydrology, exports, and development. This work presents a compilation and analysis of X2 of data over a nine-decade period. Contact Sujoy Roy for additional information.

2014 Bay Delta Science Conference. Phil Bachand and colleagues moderated a session on the Agriculture and Food Research Initiative (AFRI) Rice Project in the Delta.

A regional solution is needed to mitigate or reverse the problem of island subsidence in the Delta, and to support the sustainability and water supply reliability. The primary goal of this project is to demonstrate rice-based cropping systems as an agricultural solution in the Delta. Rice is expected to result in important environmental benefits: concurrently mitigating greenhouse gas (GHG) emissions, soil loss, and subsidence while also reducing risks to California water supply and protecting water quality. Please see the project description for additional information.

Karen Summers recently presented at the “Groundwater Monitoring and Corrective Action Workshop” for the Utilities Solid Waste Activities Group (USWAG) in Washington, D.C. on July 8, 2014.

The focus of the workshop was on the proposed US EPA requirements for groundwater monitoring at surface impoundments and landfills containing coal combustion residuals. The workshop was attended by over 30 utility representatives and 20 additional participants by Webcast. In June, 2010, the US EPA proposed regulations for managing coal combustion residuals (CCR) as either hazardous waste under RCRA Subtitle C or non-hazardous waste under RCRA Subtitle D. The regulations have not been finalized, but the Subtitle D option is thought to be the more likely option. A key component of the proposed Subtitle D option is the use of groundwater monitoring to protect human health and the environment from potential impacts of releases to surface- or groundwater from CCR disposal sites. At the USWAG workshop, Karen presented a summary of the required statistical testing of the monitoring results and on statistical testing methods that are most appropriate for the anticipated monitoring results at CCR sites where the required measurements of trace-substance concentration data will exhibit a high percentage of non-detect values and varying detection limits. Contact Karen Summers for additional information.

Tetra Tech conducted simulations of potential plant, pipeline, and post-project subsurface releases

US Department of Energy approves $167 million in cost-shared funding for NRG’s W.A. Parish Plant post-combustion CO2 Capture and Sequestration Project. The project includes post-combustion capture of 90 percent of the CO2 (1.6 million tons per year) from a 250-MWe equivalent slip stream from a coal-fired unit using an advanced amine technology, compression and dehydration of the CO2 for transport in an 80-mile pipeline to an existing oil field in southeast Texas for enhanced oil recovery. Tetra Tech conducted simulations of potential plant, pipeline, and post-project subsurface releases for the health and safety section of the Environmental Impact Statement.

Ernest Moniz, newly appointed head of the US Department of Energy, is supportive of CCS and CO2 utilization

Tetra Tech conducted simulations of potential post-project, plant, and pipeline subsurface releases

Wide local support expressed for the FutureGen Alliance’s FutureGen 2.0 project in central Illinois at the public hearing held on the Draft Environmental Impact Statement on May 21, 2013. This project includes repowering an existing coal-fired plant with a 168 MWe oxy-fuel combustion unit, capture of about 90 percent of the CO2 (1.2 million tons per year), compression and dehydration of the CO2 for transport in a 30-mile pipeline, and geologic storage using horizontal wells in the Mt. Simon Formation in Illinois. Tetra Tech conducted simulations of potential plant, pipeline, and post-project subsurface releases for the health and safety section of the Environmental Impact Statement.

Tetra Tech staff presented a poster on “Use of Experiments to Improve Modeling of CO2 Pipeline Rupture Hazards” at the 12th Annual CCUS Conference.

12th Annual CCUS Conference held in Pittsburgh, PA showed that interest in CCUS by US and international government and industry partners is high, in spite of recent economic challenges. Tetra Tech staff presented a poster on “Use of Experiments to Improve Modeling of CO2 Pipeline Rupture Hazards”. The scoping study showed that few experiments have been conducted using CO2, and that most were not under supercritical conditions. None of the experiments were at a large-enough scale to represent the near-field phase changes that can occur from a pipeline rupture.