Broadbent conducts work throughout the western United States. Environmental projects can include work such as operations and maintenance of remediation systems, in remote parts of Nevada, California, Oregon, and other western states. To ensure the safety of employees, emergency packs are stored in vehicles. Field personnel are trained to utilize the contents of the packs to assist themselves, or others. Vehicle training and defensive driving lessons are provided to field personnel to help prepare drivers for situations such as vehicle malfunction, or facing the ever changing elements of weather. For work at the Leviathan Mine in Alpine County, California, workers under go defensive driver, fatigue management, and mountain driving training programs to prepare them to navigate potentially dangerous, remote mountain Read More »
Posts Categorized: Blog
Case Study: Pump and Treat Remediation
South Lake Tahoe, CA – Broadbent provided third party review and documentation of historical operation and maintenance activities for an existing on-site groundwater pump and treat remediation system, and provided recommendations for system modifications and future operations. Constituents of concern included PCE, TCE, DCA, and vinyl chloride. Recommendations and actions included: Repairing system components, Testing system operations, And modifying the system to address iron fouling problems. Broadbent was retained to operate the system and monitor associated wells. Through a series of repairs and tests, and minimal system operation time, it was determined that the system was no longer needed, as it was no longer extracting impacted water associated with the landfill. The USDA-Tahoe National Forest (TNF) approved to terminate remediation Read More »
Environmental Experience – Total Petroleum Hydrocarbon Impacts
Broadbent managed a project in Sparks, NV, where a diesel fuel release was discovered, emanating from a failed dispenser piping bushing (the facility operates two diesel fuel underground storage tanks (USTs), one 5,000 gallon capacity and one 8,000 gallon capacity). Initial soil sampling assessment activities, conducted via hand sampling at the point of release, found total petroleum hydrocarbon (TPH) diesel impacts present at 1,700 mg/kg and 16,000 mg/kg. Subsequent soil characterization activities were conducted via installation and sampling of two GeoProbe soil borings, found TPH diesel impacts present at 1,100 mg/kg in one boring at ~10.5 feet below land surface (bls), and 2,500 mg/kg in the second boring at ~15 feet bls. Additional site characterization activities were conducted using drilling Read More »
Environmental Experience – Heating Oil and Underground Storage Tanks
Broadbent has been providing professional Certified Environmental Manager (CEM) services to a large Nevada School District, relative to heating oil underground storage tanks, since 1996. This includes work at numerous facilities, within the past five years. Conducted activities include: preparation of tank removal contractor specifications; contractor bid solicitation; contractor selection; oversight of tank cleaning and removal activities; collection of tank closure assessment samples; and preparation of Tank Closure Assessment Reports. Where impacts (primarily diesel range organics and some MTBE) have been discovered, additional site characterization activities have been conducted, including: Work Plan preparation and implementation; soil boring drilling and soil sample collection (using multiple drilling techniques, including GeoProbe, Hollow stem auger, air rotary, and sonic); soil boring completion as groundwater Read More »
Environmental Experience – Groundwater Monitoring, Sampling, and Reporting
As a sub-contractor, Broadbent has been providing services to a nationwide environmental contractor, at numerous sites throughout California, since 2009. Work has taken place throughout Alameda, Butte, Contra Costa, Los Angeles, Monterey, Napa, San Francisco, San Mateo, Santa Cruz, Solano, Sonoma, and Yolo counties. Provided services include quarterly and semi-annual groundwater monitoring and sampling activities and subsequent report preparation and submittal. Additional activities performed for the client include acquisition of encroachment permits assistance in obtaining case closure data management and review historical document review traffic control subcontractor coordination, biogeochemical monitoring, and light non-aqueous phase liquid (LNAPL) gauging and recovery. Â Broadbent is currently working on 34 of these sites for the client throughout California, but primarily in northern California.