Selected Coring Projects
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| September 1991 |
TEG Oceanographic Services was the sampling contractor for the Port of Los Angeles Phase 1 2020 Worldport expansion project, under sub-contract to Fugro and Toxscan Inc. TEG was responsible for the collection of several hundred sediment core samples for environmental and geotechnical evaluation. |
| February 1992 |
TEG was chosen by AMEC as the sampling contractor for a multi-year Navy CLEAN contract for the sampling and evaluation of proposed dredge material for the US Navy Carrier Homeporting project at the Naval Air Station, North Island in San Diego Harbor and at the Subase Pearl Harbor, HI. The project was part of the TEG and AMEC team, chosen by the Navy, to obtained hundreds of sediment cores for toxicity testing as part of the US EPA "Green book" evaluation protocols for ocean disposal. TEG Oceanographic Services was responsible for the sediment sampling operations as well as the vessel positioning. |
| March 1994 |
In March of 1994 TEG performed a geotechnical investigation for the Voice of America relay station on Sao Tome Island, West Africa. TEG was responsible for investigating the area for the placement of an underwater fuel transfer pipeline. The area was surveyed using TEG divers to find the optimal sediment for the placement of the pipeline anchors. Survey lines were marked using an EDM Theodolite and 5 meter sediment cores were obtained to be taken back to California for testing. TEG personnel and equipment were mobilized from San Diego, CA and flown to Sao Tome, West Africa, core samples were collected, and the crew and equipment returned to the United States in 14 days time. For the final report TEG submitted the geotechnical data as well as plots of the surveyed area with positions marking the optimal placement for the fuel transfer pipeline anchors. |
| March 1995 |
In March of 1995, TEG teamed with AMEC was awarded a two year indefinite delivery/indefinite quantity contract to performed pre-dredge studies for the Port of Los Angeles, CA. TEG was responsible for the collection of sediment cores and DGPS positioning. AMEC was responsible for the toxicity testing to determine if the sediment was suitable for ocean disposal. TEG has performed these services continually through renewed contracts as of 2002. |
| May 1995 |
In May and June of 1995, TEG performed a number of studies for the US ACOE under contract to MEC. Pre-dredge studies were performed along Oakland inner harbor channel and turning basin, Pinhole Shoals Channel, and Redwood City, CA. TEG was responsible for performing all field sampling operations involved in the project including; core sampling/processing, positioning, vessel and tender skiff. The samples were taken to a bioassay laboratory for USEPA "Green book" testing for ocean disposal. |
| June 1995 |
In June of 1995, TEG performed a marine geotechnical investigation at the Cambria Desalination Plant, Cambria, CA. TEG was responsible for the collection of sediment samples and bedrock cores as part of a pipeline placement survey. Six meter core samples were obtained of the top sediment. When the sediment/bedrock interface was reached a diver operated core drill was deployed and bedrock cores were obtained fifteen meters into the bedrock. The samples were then tested for physical characteristics to determine the optimal placement for the pipeline. |
| July 1995 |
In July of 1995, TEG performed a marine sediment sampling project at the Naval Air Station, North Island, CA. TEG was responsible for sampling around a metal slag pile to delineate the radioactive plume around the slag. Ten sediment cores were taken offshore and eighteen sub-tidal samples were obtained using TEG's marine rotary/percussive STRATAPROBET drill. TEG's STRATAPROBET drill was used to collect discreet sediment samples and to set temporary wells for groundwater sampling. |
| September 1995 |
In September 1995, TEG performed a pre-dredge investigation in Glen Cove, New York under contract to CDM Federal for the US ACOE. TEG was responsible for the collection of sediment samples and DGPS positioning to determine the toxicity of the proposed dredge material as part of the Li Tungsten Superfund project. |
| June 1995 |
In June of 1995, TEG performed a marine geotechnical investigation at the Cambria Desalination Plant, Cambria, CA. TEG was responsible for the collection of sediment samples and bedrock cores as part of a pipeline placement survey. Six meter core samples were obtained of the top sediment. When the sediment/bedrock interface was reached a diver operated core drill was deployed and cores were obtained fifteen meters into the bedrock. The samples were then tested for physical characteristics to determine the optimal placement for the pipeline. |
| June 1995 |
In July of 1995, TEG performed a marine sediment sampling project at the Naval Air Station, North Island, CA. TEG was responsible for sampling around a metal slag pile to delineate the radioactive plume around the slag. Ten sediment cores were taken offshore and eighteen sub-tidal samples were obtained using TEG's marine rotary/percussive STRATAPROBET drill. TEG's STRATAPROBET drill was used to collect discrete sediment samples and to set temporary wells for groundwater sampling |
| July 1996 |
In July of 1996, TEG was contracted to perform a marine drilling and sediment sampling operation for Naval Research and Development (NRaD), San Diego, CA. Two drainage canals were sampled using TEG's marine STRATAPROBE drill and TEG's portable drill barge. Twenty locations were sampled along the canals to determine the extent of groundwater contamination. |
November 1996
April 1997 |
From August, 1996 through April, 1997 TEG was contracted to perform emergency action vibrocore services for Waste Management at the Heckathorn Superfund Site. The project objective was to collect cores in grid areas that had been dredged to verify that all DDT laden sediment had been removed to specifications. TEG was often required to mobilize on site within several hours' notice, as it was necessary to work around the schedule of the dredging operations. |
| May 1997 |
In May of 1997, TEG Ocean Services performed a Van Veen grab and vibrocore sediment sampling project at the Naval Station Treasure Island for PRC as part of the US Navy CLEAN II program. TEG was responsible for the vessel and support tender operations, sediment sampling, DGPS positioning, and all logistics for the five-week project. |
| December 1997 |
TEG Oceanographic Services performed an offshore core drilling project at the Fort Kamehameha Sewage Treatment Plant in Honolulu, HI for the US Navy. The project focus was to investigate potential offshore pipeline routes to extend the existing effluent pipe further offshore. Hydrographic surveys, circulation studies and diver surveys were performed to determine the optimal route for the pipeline and to determine the optimal depth to place the diffuser. TEG's submersible rotary core drill was employed to collect incremental cores in coral reef and sediment overburden to 50 feet below the seafloor. TEG was selected for this project because previous attempts by another firm to collect deep sediment cores in this area had been unsuccessful. TEG's innovative approach to performing this project using a diver operated, submersible drill as opposed to a conventional land based drill mounted on a barge with support tug, saved the Navy many thousands of dollars. |
| March 1998 |
TEG was contracted by Woodward Clyde (URS/Greiner) to collect geotechnical data along a proposed cooling water intake route at the Rosarito Beach Power Plant in Mexico. Geophysical data was collected including sub-bottom profiles, side-scan sonar and bathymetry to determine the optimal route to place the pipeline. TEG then mobilized a dive crew to jet-probe 10 locations along the pipeline route. The geophysical and jet-probe data was reviewed and core site locations were chosen. TEG's diver-operated rotary drill was then mobilized to sample 4 locations to 30-feet below the sediment along the selected pipeline route. Standard Penetration Tests (SPT) samples were collected at 5-foot increments at each boring and taken to a laboratory for geotechnical testing. The hydrographic data as well as the hard-hat diving/drilling operations were performed during heavy (El Nino) winter swell conditions with only minimal weather stand-by and without injury. |
| September 1998 |
TEG was contracted by Oceaneering to collect and analyze geotechnical cores in several small groundwater recharge reservoirs operated by Orange County Water District to assess permeability problems in the basin sediments. TEG employed its submersible rotary drill deployed from our portable drill barge, to collect undisturbed cores in highly compacted and cemented sand strata where other sampling methods had failed to obtain samples. The laboratory results provided data required to redesign a multi-million dollar remotely operated (ROV) submersible system built to reduce silting and increase permeability of the basins lake beds. |
| October 1999 |
TEG was contracted by the US Geologic Survey (USGS) to collect vibrocore samples up to twenty feet in length at numerous suspected ancient river bed locations (200-330 ft. depths) offshore from Santa Cruz to Davenport CA. TEG utilized its heaviest electric vibrocore system in a fixed frame mode, to collect these cores in 6-10 ft. swells and moderate winds under "live boat" conditions with 100% success. No cores were bent, broken off, or lost due to the efficient operation of the support frame under these difficult conditions. |
| July 2000 |
TEG performed a vibrocore sampling project of reef-front sediment around Oahu Island, Hawaii as part of a US Geological Survey (USGS) beach replenishment survey study. Most cores were twenty feet in length and were collected under "live boat" conditions at depths varying from 100-300 ft. To assured the success of this sampling program TEG utilized its heaviest electric vibrocore system mounted in a fixed frame assisted by an underwater video camera system. |
| September 2000 |
TEG was contracted by LA deWit to obtain deep sediment core samples for the California State Lands Commission with its largest pneumatic vibrocore system. Vibrocore samples up to thirty feet in length were successfully collected from each of the four abandoned oil and gas production platform shell mounds located in the eastern portion of Santa Barbara Channel, CA. Four core samples from each of the four platform sites were collected and characterized using both environmental and geotechnical methods. |
| September 2000 |
TEG was contracted by SANDAG and Noble Consultants, Inc. to conduct an offshore coring survey of selected potential sand borrow sites along the entire San Diego County coastline in support of planned beach replenishment and restoration efforts. Sediment samples were collected with TEG's largest pneumatic vibrocore system and reached maximum penetrations of 20 ft. at most locations. |
| November 2000 |
TEG was contracted to collect vibrocore and site water samples to support a dredging program for the US Naval Station, Guam |
| June 2001 |
TEG provided two complete vessels and sampling teams including DGPS positioning vibrocoring systems and Van Veen grabs and boxcores on both vessels. The two teams operated simultaneously, collecting sediment and water samples from the bay over a 20 day period in support of a facility-wide offshore sediment validation study. |
| July 2001 |
TEG was contracted by Noble Consultants to perform a vibrocoring survey of potential sand sources offshore Goleta, California in support of beach restoration efforts. TEG collected cores to 20 ft. in length utilizing it's largest pneumatic vibrocoring system. |
| October 2001 |
Vibrocore and water sampling in support of a proposed Navy dredge project for West Loch Basin, Pearl Harbor, Hawaii. |
| November 2001 |
TEG collected cores and grab samples to determine bioavailability of lead pellets in near-surface bay sediments from an old Navy Skeet Range Site. Replicate cores were collected simultaneously and sliced vertically at 4 cm. intervals to determine very precise concentrations of lead pellets in the upper bay sediments. TEG had previously performed several sediment investigations using gravity and vibrocoring methods at numerous locations around the Alameda Naval Air Station. |
| February 2002 |
TEG was contracted by Group Delta Inc. and the U.S. Navy to obtain five rotary borings offshore of San Nicholas Island, CA., as part of a geotechnical survey for construction of an open ocean pier at Daytona Beach. Rock core samples and SPT data were collected using TEG's Submersible Rotary Core Drill. |
| March 2002 |
Upper Newport Bay, CA. USACE Project. TEG performed the collection of potential dredge sediments to support a extensive wetlands restoration project and improve circulation and tidal flow in Upper Newport Bay. TEG performed deep (20-30 ft.) vibrocoring and rotary drill sampling from our portable drilling barge at 50-60 locations; salt & fresh water, marsh, mud flats, open water areas and tidal channel. |
| May 2002 |
State Lands Commission, Santa Barbara Vibrocore samples up to thirty feet in length were successfully collected from each of the four abandoned oil and gas production platform shell mounds located in the eastern portion of Santa Barbara Channel, CA. Four core samples from each of the four platform sites were collected and characterized using both environmental and geotechnical methods. |
| June 2003 |
United Heckathorne Superfund Site, Richmond Harbor, CA. TEG has performed bathymetric surveys, vibrocore and Van Veen grab and Diver core sampling services to provide confirmatory data on the success of the dredging and cleanup of DDT laden sediments in Lauritzen channel. These services have been provided to Battelle and Waste Management Inc. over a six-year period. 1997-2003. |
| October 2003 |
Hunters Point Shipyard Site, San Francisco Bay, CA. TEG was contracted to mobilize two of its vessels and its highest electric vibrocore systems along with boxcore, gravity core, and Van Veen grab sampler. TEG's biggest pneumatic system was also used for some sampling locations along the shoreline, this system was deployed via a crane. TEG Survey Vessel was on site for the entire project with a very high precision DGPS insuring precision at all core locations. |
| October 2004 |
TEG Ocean Services was contracted by URS to provide a vessel and coring system to the Presidio Mountain Lake in San Francisco. TEG was able to mobilize its drill barge without disturbing the surroundings and used it's most powerful electric vibrocore to collect the samples. The project was performed with complete satisfaction. |
| December 2004 |
MOTSU terminal, Southport, North Carolina. TEG was contracted to deploy six current meter moorings to complete a current study at the terminal. A report was submitted to the highest satisfaction of its clients. |
| March 2005 |
TEG Ocean Services was contracted to perform a multi-phase study at a LNG future site in Ensenada, Mexico. TEG first deployment consisted of a diver inspection and jet probing of future sampling sites, each site visited was log according to standard method, and this was made possible by the highest technology in two-way communication between the diver and the deck personal on the R/V Secret Island. Jet Probing phase was followed by core collecting phase, during which TEG used its heaviest pneumatic vibrocore system to core in sand up to 20ft. |
| April 2005 |
US Environmental Protection Agency and CH2MHILL contracted TEG Ocean Services to mobilize its drill barge with heaviest electric vibrocore system and support vessel to the Upper Columbia River in Washington for a month long coring program starting close from the Canadian border and extending to the Grand Coulee Dam. All core samples needed to be vertical at all time and maintained at a specific temperature, special modifications were made to accomodate these requirements. |
| August 2005 |
TEG Ocean Services was awarded the US Army Corps of Engineers Dredge Maintenance Program for both Sacramento and Stockton Deep Water Ship Channels. TEG was responsible to mobilize the R/V Shearwater and its 6 hp electric vibrocore system. This high profile project was completed with success. |
