Remedial Disciplines
PROJECT SUMMARY
SOIL EXCAVATION & RESTORATION
Upstate New York
Client: Confidential
Date: September 2019 – December 2019
Project Highlights
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Excavation, transport, and disposal via rail of 2,400 tons of impacted soil.
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Management of 21,000 gallons of groundwater.
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Surface restoration with concrete, asphalt, and vegetation.
Overview
Terra Nova Solutions was tasked with removing chlorinated impacted soil and groundwater from survey defined locations at the site. Each defined area was excavated to 10-13 feet below grade using a slide rail shoring system for excavation support. A total of 2,400 tons of soil was removed from the excavation stockpiled, tested and subsequently transported off-site. A total of 100 tons of soil was segregated for hazardous off-site disposal. During the excavation, Terra Nova handled 21,000 gallons of water which was pre-treated and disposed of in the on-site water treatment system. Following excavation we installed a demarcation fabric and restored the site with imported backfilled compacted and tested in 12-inch lifts. Surface restoration included concrete, asphalt and grass seed. All work was performed in accordance with New York State Department of Remediation regulations (NYS DER-10).
PRB PILOT STUDY SOIL EXCAVATION & SITE WORK
Southeastern Massachusetts
Client: Confidential
Date: July 2019 – December 2019
Project Highlights
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Excavation, transport, and disposal via rail of 3,100 tons of impacted soil and sediment.
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Management, treatment, and disposal of 135,000 gallons of groundwater.
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Supporting and assisting deep trenching PRB contractor.
Overview
Terra Nova was tasked with site preparation and support for the installation of a permeable reactive barrier (PRB) along the Acushnet River. The site preparation included the installation of sheeted water tight shoring to 35 feet, excavation of 3,100 tons of hazardous impacted soil within the shoring, and management of 135,000 gallons of ground water. Site restoration prior to the PRB installation included backfilling with low permeable soil and general fill, compaction testing and sheeting removal. Terra Nova assisted the PRB contractor with equipment assembly and loading, materials management and decontamination. Following PRB installation Terra Nova restored the site using an asphaltic hydraulic barrier. Challenges to the site work included working in close proximity to the Acushnet River with tidal fluctuations. Terra Nova worked diligently to maintain and enhance the Erosion controls devices through out the Project.
FOCUSED SOIL EXCAVATION & RESTORATION
Upstate New York
Client: Confidential
Date: June 2019 – November 2019
Project Highlights
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Remediation in accordance with New York State Department of Remediation (NYS DER-10) regulations.
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Excavation, transport, and disposal of approximately 9,600 cubic yards of metals impacted soil.
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Restoration of six properties with stone, clean fill, topsoil, and decorative landscape features.
Overview
Terra Nova Solutions was tasked with the focused removal of metals impacted soil from commercial and residential properties. Terra Nova had to work closely with the client, engineer and property owners to successfully removed impacted soil located around sensitive areas. Terra Nova excavated and managed 9,600 cubic yards of soil from six properties. The soil was transported to a private landfill where Terra Nova managed and graded the soil. Following the excavation services Terra Nova restored the site with imported common fill and top soil. During the course of the excavation work Terra Nova managed landscaping details including relocation of porches, sheds, walkways and flower beds.
STORM SEWER DRAINAGE SYSTEM
Southeastern Massachusetts
Client: Confidential
Date: June 2019
Project Highlights
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Approximately 1,600 linear feet of sewer drainage pipe, ranging from 6” to 36” in diameter, inspected and cleaned, along with 8 catch basins and 4 manholes
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CCTV to inspect before and after stages of remediation
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High pressure jets to dislodge, move, and clean sediment and debris, which was removed by vacuum truck
Overview
Tasked with removing PCBs from a storm sewer system, Terra Nova Solutions mobilized its resources to clean the site. Prior to decontamination, an inflatable pipe plug was installed into the drainage pipe for the purpose of containment. Cleaning was performed with a high pressure jet to dislodge and move debris and sediment toward the working manhole, where it was subsequently collected with a stainless steel vacuum truck. In total, 12 manholes and catch basins were cleaned using high pressure jets. Sampling, manifesting, transportation, and disposal of waste were conducted in accordance to all regulations.
