Service: MTBE Remediation

The Reynolds Group is actively cleaning up the gasoline additive MTBE - methyl teriary butyl ether -for gas station clients throughout California.

Groundwater Monitoring (5542)

Client: BARTHELEMY DAIRY
Proj Mgr: Daniel Nunez
 Completed: In Progress
Industry: Real Estate Managers/owners
 Service: Mtbe Remediation
The subject site is a dairy facility that once contained 7 single walled steel underground storage tanks (UST's) and dispensers that served fueling operations. In September 1998, two 8,000 gallon, two 6,000 gallon, one 3,000 gallon and two 450 gallon tanks that contained either diesel or gas were removed from the site by another contractor. In September 1998, analytical lab results suggested high concentrations of gasoline and diesel impacted soils beneath the northern most 450 gallon USTs and beneath the former, southernmost dispenser island. The project involved quarterly groundwater monitoring of 8 wells where the depth to groundwater was 42 feet. Concentrations of benzene ranged from non-detect (ND) to 12,032 parts per billion (ppb). Concentratons of MTBE ranged from ND to 7,161 ppb. The Reynolds Group interacted with the State of California Clean Up Fund to make sure all work was re-imbursable to the client.

MTBE Remediation (6111)

Client: STRAUB DISTRIBUTING
Proj Mgr: Angel Cardoza
 Completed: 09/13/2002
Industry: Gas Station/ Underground Storage Tank Owners
 Service: Mtbe Remediation
One of Californias major beverage distributors engaged TRG to close all fueling facilities in its Southern California locations. One site in particular had widespread gasoline and MTBE contamination in the soils and groundwater across a wide area, including the surrounding neighborhood. After fully characterizing the extent and spread of the groundwater contamination throughout the neighborhood, TRG designed, permitted, constructed and operated an air sparging and soil vapor extraction system that significantly reduced the plume size. The Reynolds Group demonstrated that conditions in the soils beneath the site were sufficient for natural attenuation to degrade the remaining low amounts of gasoline, and site closure was granted in 2002.

Service Station Soil/Groundwater Clean Up (5299.VII)

Client: GREENWOOD
Proj Mgr: Daniel Nunez
 Completed: 08/06/2010
Industry: Gas Station/ Underground Storage Tank Owners
 Service: Mtbe Remediation
Soil Vapor Extraction
Groundwater Remediation
Operations And Maintenance Of Remediation Systems
This case involves gasoline (BTEX and MTBE) impact to soil beneath the site and groundwater beneath and off site. Site assessment was accomplished with a network of 12 groundwater monitoring wells distributed across the site, in city streets and on neighboring properties. The site is located very near city of Tustin drinking water wells. The gasoline plume extended 80 feet to groundwater. Remediation was accomplished with the installation and operation of soil vapor extraction and groundwater pump and treat systems. Because of the predominately sandy soil matrix at the site, the soil and groundwater cleanup was accomplished with a system of four soil vapor extraction wells and three pumping wells. Active remediation of the 80 foot deep soil plume and groundwater contamination was accomplished in four years. Closure was received from the Orange County Health Care Agency.

Soil Vapor Extraction and Air Sparge (5672)

Client: ARCO POWER GAS
Proj Mgr: Daniel Nunez
 Completed: 08/05/2009
Industry: Gas Station/ Underground Storage Tank Owners
 Service: Mtbe Remediation
Operations And Maintenance Of Remediation Systems
TRG manages the cleanup of three sites for this client. This is the second of the three to achieve closure. Following complete assessment of gasoline impact in soil and groundwater on and off site, a soil vapor extraction and air sparge system was installed and operated at the site. The remediation system employed at the site consisted of 12 air sparge wells connected to a sparge blower and 16 vapor extraction wells connected to an all-electric catalytic oxidizer.

Over the course of 18 months of operation, the technician assigned to the project ensured that the project team received relevant and necessary data to analyze the progress of the cleanup and adjust the operational strategy at the site. The technician also ensured the remediation system was operational well over 90% of the time. Following 12 months of post remediation groundwater monitoring, the site was closed by the Los Angeles Regional Water Quality Control Board. TRGs operations and maintenance group is a key component to implementing strategies that lead to site closures.

Injection and Monitoring (5671)

Client: ARCO POWER GAS
Proj Mgr: Daniel Nunez
 Completed: 08/27/2007
Industry: Gas Station/ Underground Storage Tank Owners
 Service: Regulatory Response & Negotiation
Mtbe Remediation
Groundwater Monitoring
Groundwater Remediation
Located on the border of Los Angeles and Culver City, this site lies within the Charnock sub-basin, from which the City of Santa Monica has historically obtained drinking water. The City's production wells in the Charnock sub-basin were shut down in 1996 when MtBE was discovered to have impacted the deep aquifer. Because of its location within the Charnock sub-basin, strict scrutiny was applied to this site by the Los Angeles Regional Water Quality Board, the US EPA and the City of Santa Monica. The gasoline released at this site had impacted the groundwater. The gasoline plume was assessed with a network of 15 groundwater monitoring wells. The remedial approach consisted of air sparging, soil vapor extraction and injection of a chemical oxidant to "polish" the groundwater concentrations and achieve the stringent closure concentrations. Closure was granted by the Los Angeles Regional Water Quality Control Board. The Reynolds Group provided Cleanup Fund approved assessment and remediation services for this project.

Gasoline Plume Assessment (6066)

Client: STRAUB DISTRIBUTING
Proj Mgr: Al Fuan
 Completed: 09/17/2010
Industry: Not Assigned Service: Mtbe Remediation
Groundwater Remediation
Working for Straub Distributing, The Reynolds Group assessed and remediated gasoline (including MTBE) impact to shallow soils and groundwater at the site of a former distribution center. During the completion of vertical and horizontal assessment of the gasoline plume, a groundwater pump and treat system was installed and operated at the site as an Interim Remedial Action to control the off site migration of the gasoline plume in the groundwater. While gasoline (BTEX and MTBE) concentrations decreased significantly in the groundwater, a high pressure air sparge and soil vapor extraction system was installed and operated to address the remaining gasoline impact at the site. The air sparge and soil vapor extraction systems were operated continuously for 26 months and intermittently in a "pulsing mode" for approximately 12 months. TRG petitioned for closure from the Orange County Health Care Agency, the Santa Ana Regional Water Quality Control Board and the California Water Quality Control Board. Closure was obtained, and the clients real assets' value was restored.

Heavy Metals Contamination Cleanup (7637.X)

Client: RICHLINE PROPERTIES
Proj Mgr: Daniel Nunez
 Completed: 08/23/2011
Industry: Metal Finishers
 Service: Hexavalent Chromium Clean-up
Mtbe Remediation
TRG assisted a property management company in the wrap up of a tenant lease in Beverly Hills. The former occupant operated a metal plating business in the leased space. As part of the wind down of the lease, the tenant was required to return the property to its original condition. The property manager had been working with another environmental consultant who had identified metals in the soil beneath the former plating operation. However, the property manager retained TRG to perform the cleanup of the property and obtain case closure from the Los Angeles County Fire Department HAZMAT Division.

Concentrations of contaminants such as chromium, copper, lead, nickel and zinc in the soil exceeded allowable limits and necessitated the physical excavation of the soils in order to clean up the site. Unfortunately, the impacted soils were beneath the building and below a shallow basement. Approximately 50 cubic yards of soil needed to be dug up, manifested and properly disposed of. TRG was able to mobilized specialized equipment to the site in order to excavate the contamination from the basement level and load it into bins for transport to an appropriate disposal facility. Confirmation sampling showed pockets of contamination still in place after the initial excavation, and additional spot excavation was performed. TRG reported on the excavation activities which confirmed the metals at the site are now below concentrations negotiated with the County Fire Department. Case closure is eminent.
Environmental Consulting & Environmental Contracting
Environmental Consulting & Environmental Contracting
Environmental Consulting & Environmental Contracting
Environmental Consulting & Environmental Contracting