Environmental

Cerrudo Services has performed ecologically sensitive remediation projects in salt marsh and other wetlands locations, and has considerable experience in lead and asbestos abatement.

COMPREHENSIVE TACTICAL INFRASTRUCTURE MAINTENANCE AND REPAIR, AREA 1, CALIFORNIA – ENVIRONMENTAL ISSUES

  • Environmental-CTIMR
  • Environmental-CTIMR2
  • Client: Department of Homeland Security
  • Location: 130 Miles along the California / Mexico Border
  • Date: 2015
  • Contract #: HSBP1012-C-00007
  • Value: $24,188,870

Project Details

Cerrudo Services, as prime contractor, won the award of this Comprehensive Tactical Infrastructure Maintenance and Repair (CTIMR) contract.

As part of our work on this project, several ecological and environmental concerns arose that required mitigation.  Along the Tijuana River Basin we performed vegetation clearing in critical habitat areas for the Least Bell’s Vireo, (State endangered species).  Cerrudo employed a certified biologist to perform a pre-activity survey and marking of the Vireo’s critical habitat to be protected, and provide full time oversight of operations to ensure compliance.

At the Otay Mesa Port of Entry Channel, Burrowing Owls were discovered.  We employed a Biologist to conduct a pre-activity survey of the project area and prepare nest survey report.

Bureau of Land Management land in the El Centro project area is subject to the Flat Tailed Horned Lizard (FTHL) Range-Wide Management Strategy.  Cerrudo employed a FTHL Monitor to conduct a pre-activity survey of all roads within the project scope and to provide oversight of road work operations to ensure compliance with the FTHL Protection Plan.

HAMILTON ARMY AIR FIELD – DEMOLITION OF BUILDING 82, SMALL ARMS RANGE, UTILITY POLE SITE AND TRANSMITTER SITE

  • DEMOLITION-OF-BUILDING-82
  • Client: US Army Corps of Engineers
  • Location: Novato, CA
  • Date: 2008
  • Contract #: W912P7-08-C-0007
  • Value: $603,975

Project Details

Cerrudo Services removed all the remaining structures located on the Hamilton Army Air Field.  Hazardous material surveys were commissioned prior to demolition of the structures.  The surveys determined the presence of both lead and asbestos that required abatement.

Cerrudo demolished a 15,000 SF metal building, two wood frame structures and three concrete masonry buildings including the concrete foundations of each structure.  Soil was excavated to a depth of 6” within the footprint of each building and stockpiled.  The material was then characterized for lead contaminated waste disposal. Also removed were approximately 30 utility poles, 1,000 LF of chain link fencing, electrical transformers and miscellaneous debris throughout the property.  A portion of the work was performed in an unexploded ordinance area requiring a specialized subcontractor to clear the areas where work was to be completed.

               


LAWRENCE LIVERMORE NATIONAL LABORATORY, PIT 7 STORM WATER DIVERSION, SITE 300

  • Client: Lawrence Livermore National Laboratory
  • Location: Livermore, CA
  • Date: 2008
  • Contract #: B567188
  • Value: $804,987

Project Details

Cerrudo Services designed a drain water diversion network to reduce the infiltration of rainwater into a landfill located at a U.S. Department of Energy owned experimental test facility.  The design was challenging due to the varying soil composition of the hills in addition to various exposed and hidden bedrock.  The approved design consisted of a series of French drains on the south hillside and a roadside V-ditch at the base of the east hillside.  Existing drainage systems to the north and west of the landfill were to be upgraded and re-armored with rip rap and vegetation.  The construction phase of the project was challenging due to the remote location of the jobsite in addition to strict security procedures.  There were elements of the design that needed to be revised during construction to “field fit” actual conditions and the slope of the south hillside required precise heavy equipment operation along with innovative material placement methods.

INBOARD BRAC REMEDIAL ACTIONS

  • INBOARD-BRAC-REMEDIAL
  • Client: US Army Corps of Engineers
  • Location: Novato, CA
  • Date: 2008
  • Contract #: W91238-04-C-0033
  • Value: $1,801,886

Project Details

Cerrudo Services conducted Base Realignment and Cleanup (BRAC) remedial actions inboard of the bay front levee at the former Hamilton Army Airfield, Novato, California.

Cerrudo Services excavated soil contaminated with DDT, heavy metals and petroleum hydrocarbons from eight remote locations.  Excavations ranged from six inches to over 10 feet in depth with areas extending a few square feet to over an acre.

Cerrudo excavated, stockpiled and characterized for disposal 13,446 cubic yards of contaminated soil.  The stockpiles were divided into 100 cubic yard grids and discrete samples were taken for each grid.  Discrete samples were analyzed to more specifically identify the Class I waste and as a result reduced the overall cost of disposal.  Cerrudo loaded, weighed, transported and disposed of 17,380 tons of waste to approved landfills.

All work was conducted from the inboard side of the levee because of ecological considerations regarding coastal salt marsh habitat.  Tidal and wave action creating a breach was another consideration because one area of contamination was well within the outboard half of the levee. Excavation into the levee was conducted during a low tidal cycle and required immediate backfill and backstopping so that the levee could be later repaired to new construction design specifications.

 

HAMILTON ARMY AIRFIELD COASTAL SALT MARSH EXCAVATION

  • SALT-MARSH-EXCAVATION2
  • SALT-MARSH-EXCAVATION1
  • SALT-MARSH-EXCAVATION3
  • Client: US Army Corps of Engineers
  • Location: Novato, CA
  • Date: 2006
  • Contract #: W912P7-05-C-0003
  • Value: $5,223,998

Project Details

The Coastal Salt Marsh at the former Hamilton Army Airfield required remediation to address elevated levels of contaminants by removing contaminated soil from the marsh.  Soil was excavated in the outboard marsh from several specific sites ranging in size from a few hundred square feet to several acres and as much as three hundred feet outboard of the bay front levee.

Minimization measures were implemented to protect the salt marsh harvest mouse, the California clapper rail and other fauna and flora from the effects of remedial actions.  A contract biologist kept daily notes of the mouse relocation, vegetation removal and barrier fence erection work at each site documenting minimization measures taken.  A total of 31 salt marsh harvest mice were successfully relocated

Bay water tidal influences into the excavation areas were a major concern.  Control measures such as sediment traps and a barrier placed at the downstream end of the drainage ditch were devised to eliminate migration of contaminants into the bay by receding tide water.  The barrier also eliminated the potential of fish entering the excavation sites.

Cerrudo Services excavated, stockpiled and disposed 33,208 cubic yards of contaminated soil from a total of 10 separate sites located within the coastal salt marsh tidal zone.

HAMILTON WETLANDS RESTORATION – BUILDING DEMOLITION, ASBESTOS AND LEAD ABATEMENT

  • ASBESTOS-AND-LEAD-ABATEMENT
  • Client: California State Coastal Conservancy/US Army Corps of Engineers
  • Location: Novato, CA
  • Date: 2004
  • Contract #: W912P7-04-C-0002
  • Value: $394,820

Project Details

Cerrudo Services prepared the Hamilton Air Field for wetlands restoration by demolishing and disposing of many buildings and incidental facilities over an area covering approximately 1,000 acres.  Work included hazardous material surveys, lead and asbestos abatement and demolition of numerous structures.  Work plans were implemented that stressed environmental protection for the ecologically sensitive site.

Prior to demolition all utilities were terminated safely.  Lead and asbestos was abated from the structures prior to demolition.  Water misting was used as a dust suppressant during demolition.  Structures ranged in age and complexity including CMU, steel frame and wooden construction.