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North Shore at Mandalay Bay
Oxnard, CA
The North Shore at Mandalay Bay project is located in the coastal community of Oxnard, California. It is a 91-acre site that was used as a disposal site by a private land owner. The site is mainly contaminated with sludge materials from oil drilling operations in the area. Envirocon will excavate approximately 650,000 cubic yards of this material and place it in an on-site soil containment area (SCA). The site also contains 15,000 cubic yards of high VOC material that will be treated via soil vapor extraction (SVE) units. After this material has been treated to acceptable levels, it will be placed as part of the cover on the SCA. Additionally, 12,000 cubic yards of PCB-contaminated soil will be excavated by Envirocon and transported for off site management at an approved facility.
Envirocon began the project by stockpiling 150,000 cubic yards of clean material out of the SCA to allow for the placement of the sludge materials. The project then ran two equipment spreads with one excavator removing sludge material and articulating haul trucks transporting it to the SCA, while a second excavator dug clean material out of the SCA to build up the streets and house building pads. A total of 900,000 cubic yards of clean material will be removed and re-compacted over the area of the site. A D-6 Dozer with GPS is being utilized to finish the building pads to final grade. Envirocon is employing a crew of thirty, many of which are veterans of previous projects. Two mechanics are maintaining a fleet that consists of nine articulated trucks, two excavators (including a PC1000), four dozers, four challenger scrapers, and other support equipment.
Notably, one area on-site will remain undisturbed throughout the process. In 1997, during a site investigation, biologists from the Untied States Fish and Wildlife Service discovered a colony of Ventura marsh milk-vetch (a protected species of native plant life). There is a population of approximately 50 plants of Ventura marsh milk-vetch which grows within a 2,800 square foot area in the middle of the SCA. A preservation area has been established with a conservation easement.
The project is currently scheduled to be completed in mid-October. Upon completion of the cleanup, the current owner intends to construct 300 homes.
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