For well over two decades, Green Engineering has completed numerous projects in environmental and waste management, both locally, in the wider Caribbean and South America. Our clients include major industrial and manufacturing companies, Government Ministries and organisations, corporate entities, and private residents. Below are a few examples of the projects we have fulfilled over the past 20 years.
September 2018 – March 2020
Green Engineering was contracted by Zhen Jiang Construction No. 2 (Zhen Jiang) to remove asbestos containing floor tiles, mastic, vent pipes and insulated hot water lines from Floor 5, 4 ,3, 2 and 1 of the ACADEMISCH ZIEKENHUIS PARAMARIBO Hospital Building, Paramaribo, Suriname
January – May 2016
Green Engineering was contracted by Home Construction Limited (HCL), to conduct contaminated soil remediation works at the CROSSINGS Residential Housing Community, Arima. Historically, lead slag and other hazardous waste types were deposited on the land from nearby battery and metal-plating activities. Remediation works were completed on the site prior to its development as a housing estate. The remedial design included the excavation and encapsulation of contaminated soil in a lined engineered cell, just outside the boundary of the residential housing area, approximately 15ft west from the Arima River. In May 2012, the containment area was breached in two areas in response to storm water management activities releasing contaminated soil into the surrounding environment During the period January 18 2016 to May 26 2016, works were conducted to remediate and restore the compromised cell and surroundings including:
- The disposal of approximately 3300 cu m of uncontaminated soil to the Guanapo Landfill Site
- Extension and repair of the lead containment cell
- Treatment and encapsulated of lead contaminated soil
- Restoration of the cell surface
Operational practices and engineering controls for environmental works were adopted in accordance with ASTM and USEPA guidelines and regulations. Verification soil samples results were within the USEPA regulatory limits of 400ppm.
September 2011 – February 2012
The Brechin Castle Sugar Factory in Couva has been an integral part of the Sugar Industry in Trinidad since the mid nineteenth century. The government of Trinidad & Tobago took a decision to discontinue the production of sugar in 2003, and in 2011 a project was designed to decommission and dismantle the sugar factory. Green Engineering was contracted to work within the demolition team to remove and dispose of asbestos materials contained on boilers, evaporator pans, boiling pans, and associated piping and vessels. The project also included the abatement of equipment and piping associated with the Brechin Castle Sugar Factory Power Plant. During this project 2,200 cu yards or approximately 2,000 tons of asbestos materials were removed and abated for disposal. The Sugar Factory was restored in a condition to be mothballed for future use as a Sugar Museum.
June – September 2006
The Environmental Management Authority (EMA) of Trinidad & Tobago in an emergency response to a major public health hazard arising from a chemical plant explosion in Debe, South Trinidad, invited Green Engineering to conduct remedial and mitigation activities at the site which housed unknown industrial chemicals, stored in drums in various conditions of integrity. After the explosion unknown chemical contaminants were spread over a wide area of the site and onto adjacent residential lots. Green Engineering was mandated to characterize the explosion site and to fully delineate and clean up the site to satisfy local and international standards. Phase 1 and Phase 11 environmental Site assessments were done in accordance with the ASTM Standards E1527-05 & E1903-97. During the remediation phase of the project, more than 600 burnt drums containing 21 different hazardous chemicals in various stages of reaction or decomposition were identified for management under the scope of this project. Some 40 cu yd of contaminated soil was treated by Stabilization and Solidification (SS) and removed for landfill disposal as part of this project.
May – June 2008
Green Engineering was retained by the Environmental Management Authority (EMA) to conduct lead-contaminated soil remediation works at the Demerara Road Community Pond Area. This area is located on Moonlight Circular Road in the vicinity of the Demerara Road in Arima. GENIVAR provided technical assistance which included project safety, environmental quality and control (SEQ), documentation and reporting.
Based on the high levels of contamination at the site the EMA embarked on immediate steps to restore the area to its original condition in order to safeguard human health and protect the local and regional environment. Preliminary investigations undertaken by other parties contracted by the EMA have indicated that the lead-contaminated soil was confined to the north-western part of the pond area. Preliminary volumetric estimates prepared by others indicated that the volume of lead-contaminated materials was approximately 400 m3. A further site assessment conducted by the EMA and Green Engineering between 15-19 May 2008, determined the actual volumes of contaminated soils for remediation was 490 m3. Consequently 446 bulk bags, each with a capacity of 1m3 ±10%, containing lead-contaminated soils were removed from the site and treated for disposal.
The Cathedral of Our Lady of Fair Haven, located on Virgin Lane in the capital city Roseau, Dominica, was built between the years 1800 and 1916. In the 1960s, the roof was replaced through a donation by the Government of Canada. A Cathedral Renovation Project was initiated in 2008 to replace the deteriorating roof board and rafters, composed of asbestos-containing roof tiles (15% Chrysotile). During the period July 9, 2012 to July 29, 2012, approximately 52,000 sq ft of asbestos cement roof tiles were removed from the cathedral roof and disposed at the Fond Cole Landfill site. An additional 6 cu yd of asbestos tiles were removed from its storage in the Cathedral South-West Tower and disposed along with the tiles removed at roof level
2005 / 2014 / 2016 / 2017
The President’s House located at St. Ann’s Circular Road, Trinidad built between 1873 and 1876 contained some structural components constituting asbestos roof sheets, floor tiles, louvres and rope.
As part of the Government of Trinidad & Tobago’s effort to rehabilitate historic sites in the country, the Urban Development Corporation of Trinidad and Tobago Limited (UDeCOTT) enlisted Green Engineering to conduct abatement activities in 2005, 2014, 2016 and 2017 from the Gardener’s Hut, Attic, Main Building, Laundry, Connector Corridor and Female Quarters.
2009 – 2016
From 2009 to 2016, Green Engineering has played an integral role in the removal of all Asbestos containing materials from the Red House, Port of Spain, Trinidad. Asbestos containing materials removed during that time included roof shingles (North East Wing, North South Connector & Ridge, East & West Wing and North Chamber) air condition ducting (first floor), wall panels and decorative ceiling (North Chamber).