Location: Undeveloped Caltrans excess land adjacent to I-105 Freeway between Birch Street and Wright Road, City of Lynwood, California

Project Overview: Summit successfully undertook the excavation, transportation, and disposal of arsenic-contaminated soil (Type C-1) as part of LA Engineering’s Lynwood Urban Bike Trail project. This crucial remediation project addressed environmental concerns in the City of Lynwood.

Scope of Work: The project involved the meticulous execution of the Excavation Transportation Plan (ETP), covering procedures for excavating, transporting, and disposing of 1,700 cubic yards (y3) of arsenic-contaminated soil. The scope included an excavation schedule by location and date, dust control measures, transportation equipment and routes, spill prevention methods, truck waiting and staging areas, and a spill contingency plan for Type C-1 material.

Key Activities:

  • Transportation and disposal of 1,700 cubic yards of arsenic-contaminated soil.
  • Implementation of the Excavation Transportation Plan (ETP).
  • Dust control measures to minimize environmental impact.

Environmental Compliance: Stringent environmental measures were implemented to ensure the safe handling, transportation, and disposal of arsenic-contaminated soil.

Outcome: Summit successfully completed the excavation, transportation, and disposal of arsenic-contaminated soil, mitigating potential environmental hazards and supporting the development of the Lynwood Urban Bike Trail. This project exemplifies Summit’s dedication to environmental stewardship and responsible construction practices.


Location: Along the inactive railway corridor west of Freeport Boulevard, City of Sacramento, California

Project Overview: Summit, as part of construction activities on the multi-use Del Rio Trail in the City of Sacramento, successfully executed the sampling and analysis and disposal of arsenic-contaminated soil. This crucial remediation project aimed to ensure the environmental safety of the trail, located along the inactive railway corridor from south of Meadowview Road/Pocket Road to the Sacramento River Parkway north of Sutterville Road.

Scope of Work:

  • Temporary locations of stockpiled material
  • Sampling and analysis plans for stockpiles, specifying location, number of samples, and lab analysis
  • Dust control measures
  • Air monitoring
  • Transportation equipment and routes
  • Spill prevention methods
  • Truck waiting and staging areas
  • Example of a bill of lading for trucks transporting arsenic-contaminated material on public roads
  • Spill contingency plan for arsenic-contaminated material
  • Transportation and disposal for contaminated material

Key Activities:

  • Sampling and analysis of arsenic-contaminated soil
  • Implementation of dust control measures and air monitoring
  • Adherence to the Excavation Transportation Plan (ETP)
  • Characterization and waste profiling
  • Compliance with environmental regulations for disposal

Environmental Compliance: Summit prioritized environmental compliance, ensuring the proper handling and disposal of arsenic-contaminated soil. The project’s success can be attributed to the strict adherence to the sampling and analysis plans, dust control measures, and spill contingency planning outlined in the ETP. As a result, the site was safely and effectively managed, free of any environmental hazards.

Project Overview: Summit Environmental Contractors, with Los Angeles Engineering, Inc. (LA Engineering), played a pivotal role in the execution of the Sixth Street Viaduct Park, Arts, and River Connectivity (PARC) Improvements Project. This initiative, led by the City of Los Angeles Bureau of Engineering, aimed to enhance the environmental conditions and public spaces around East 6th Street, 6th Street Viaduct, Los Angeles.

Scope of Work:

  • Preparation of a Health and Safety Plan (HSP), Lead Compliance Plan (LCP), and Excavation Transportation Plan (ETP).
  • Provision of a Final Summary Report upon completion of the environmental remediation.
  • 40hrs of Hazwoper training for all field personnel.
  • X-Ray Fluorescence (XRF) soil screening and soil confirmation sampling, and laboratory analysis.
  • Characterization and profiling of the material using analytical data.
  • Recommendations for disposal options.
  • Air monitoring related to material excavation activities.
  • Transportation and disposal of more than 21k tons of contaminated material.

Environmental Concerns: The project addressed soil contamination with lead, total petroleum hydrocarbons (TPH), volatile organic compounds (VOCs), arsenic, cadmium, antimony, and soil gas impacts at various Areas of Concern (AOC) within the Sixth Street Viaduct PARC Improvements Project.

Key Achievements:

  • Implementation of rigorous health and safety protocols for construction activities.
  • Successful operation and monitoring of soil vapor extraction systems.
  • Utilization of XRF soil screening and confirmation sampling techniques for efficient soil analysis.
  • Comprehensive characterization and profiling of contaminated material for disposal recommendations.
  • Strict air monitoring to ensure the safety of material excavation activities.
  • Efficient transportation and disposal of contaminated material adhering to environmental regulations.
  • Successful interaction with multiple government agencies in order to receive No Further Action Site Closure.

Community Impact: The Sixth Street Viaduct PARC Improvements Project exemplifies Summit Environmental Contractors’ commitment to environmental stewardship and community well-being. By addressing soil contamination and implementing effective remediation measures, the project contributes to the creation of a safer and more sustainable urban environment. This is a small step towards the end goal which will result in community parks and recreation areas for all to enjoy.

Summit Environmental Contractors will be providing environmental consulting and contract services for the Pershing Drive Bikeway Project located in San Diego, California. The Pershing Drive Bikeway Project will feature a modernized road by improving bikeway and roadway lane safety by resurfacing and widening them and also the addition of a roundabout and median that will significantly reduce the chance of vehicle and pedestrian collisions.

The work includes hazardous soil handling and profiling, lead awareness training, excavation and transportation planning, water pollution control and air monitoring. By removing contaminated soil that build up from leaded gasoline and emissions, we prevent any toxins from infecting nearby bodies of water and also prevent the toxins from migrating into the groundwater supply.  Summit’s lead awareness training and air monitoring prepares and protects construction workers from health hazards and ensures a safer environment for the community during the project and future.


Summit Environmental Contractors provided environmental and contracting services as part of the Rail Trail Segment 7 project. The purpose of this project is to create a safer and more efficient pedestrian trail for the public. Summits’ part in achieving this, was the removal and disposal of over 8,000 Tons of contaminated and hazardous material produced from the railroad that runs parallel to the pedestrian trail. Fieldwork included geotechnical surveyance, sampling and testing, hazardous material, and lead training. An excavation and transportation plan (ETP) was also provided to outline proper handling and transportation of the jobsite and to increase worker safety.


Summit provided both environmental contracting and consulting services as part of the 47th Avenue pedestrian and bicycle improvements project in Sacramento. Services included the preparation of a transportation and disposal plan outlining the requirements for the handling of contaminated material and sampling and analysis plan. Field work included soil sampling and testing over several contaminated locations that run along the side of the CA-99. The levels of ADL were the primary concern and as a result, summit transported and disposed of hundreds of approximately 1,000 tons of hazardous material at a class I landfill


Summit Environmental Contractors provided environmental and contracting services as part of the SANDAG Bayshore Bikeway Improvements Project. The project included the construction of a new pedestrian and bike path and the reconstruction of a security wall for the San Diego Naval Base.

Services included plan preparation for Transportation and Disposal, Excavation and Safety, and Soil Management. Summit also provided waste characterization and air monitoring. The primary chemicals of concern (COC) were petroleum hydrocarbons, heavy metals, PCBs, and pesticides. Upon further testing, Summit removed and disposed of over 2,000 tons of hazardous material at a Class I landfill.


Summit Environmental Contractors provided transport and disposal of contaminated and hazardous soils. The construction job involved soil excavation and restoration from the future Horton Landing Park and surrounding vicinity. The primary chemicals of concern were heavy metals, petroleum hydrocarbons, pesticides and polychlorinated biphenyls (PCBs). To date, Summit has removed and disposed 12,500 tons of material at a Class I landfill and 7,500 tons of material at a Class II landfill. Summit’s contribution supported the city’s objective to install a bridge connecting the Emeryville Greenway located on the east side to the Bay Trail located on the west. The 230-foot span provides pedestrians and bicyclists safe passage over the Union Pacific Railroad tracks from Central Emeryville to the Bay Street Center. The project is scheduled to be completed in the Fall of 2021 and has an estimated price tag of $21.4 million.