PORTFOLIO

Our Work Portfolio

Offshore Subsurface Investigation for Proposed Port Expansion, St. Vincent – Geotechnical Drilling & Testing (Main Contractor: AECON, Sub-Contractor: Intrepid Civil & Marine Grenada Ltd.) July – August 2022

Eight marine boreholes were advanced to a depth of approx. 30 to 45 meters below mudline (sea floor bed). These test boreholes were drilled from a jack up barge, and two additional marine boreholes, advanced to a depth of 6 to 12 meters below mudline to investigate a sewer outflow line. These borings were advanced using mud rotary drilling equipment through the overburden soils in water on average depth of 15m (50 ft.) and total depth of 33-64m (110 to 210 ft.

SOL Caribbean Ltd.. – Phase II Environmental Site Assessments of Fuel Terminals. April – October 2021

Undertook a number of Phase I and II environmental site assessment studies for 13 fuel storage terminal sites across 4 Eastern Caribbean countries, including, Barbados, Grenada, Dominica, and St. Vincent & Grenadine islands, Bequia, Canouan, and Mustique. The project included supervision of drilling of boreholes and the installation of monitoring wells, and carried out associated soil and water testing, in association with WSP – Golder & Associates & KKS CONSULTING.

Geotechnical Investigation & Ground Improvement Grouting Supervision for (2) two X 250 K Gal Barbados Water Authority Reservoir Tanks (Ionics Freshwater) – July 2021

Performed compaction grouting design using geotechnical investigation data, including estimates of in-situ void ratios and relative densities, fines content, target SPT N-values and relative densities (after compaction grouting) to fill any voids and compacted weak zones, required replacement ratio, volume of grout, layout of drill holes, mix design, maximum heave allowance, required monitoring equipment for heave and lateral displacement and methods, and general compaction grouting methods.

Performed inspections, and a record of drilling of injection points, drill rates, material types, rock depth (as encountered), total casing penetration depth, and similar. Recorded measurements of grout quantities, injection rate, injection pressure, grout consistency, grout strength, and similar data.

Ashford Plantation, and Claybury Plantation Wind Turbine Project, Barbados (Pavana Energy Ltd.) March – June 2021

Preliminary Geotechnical Investigations – Drilling No. Eight (8) Boreholes (BHs) to Approx. 40 ft. Depth (320 linear ft. per site) & No. Three Pressure meter (PMT) tests per site. Micro pile Anchor Installation, involving Angular Drilling of approx. 60 Boreholes for Tension Bar Installation for Wind Turbines, 15 Boreholes Per Turbine.

Barbados Water Authority – Bridgetown Sewage Plant (BTSTP), Preliminary Geotechnical Investigation -Proposed Expansion. June 2020

Preliminary Geotechnical Investigation for Proposed Plant Expansion Project – Integrated Sustainability Consultants Ltd.

Barbados Light & Power (BL&P) Geotechnical Investigation Lamberts St. Lucy Wind Turbine Site (Stantec Consulting) May 2020

Geotechnical Investigation, lamberts St. Lucy, wind turbine site.

Geotechnical Investigation of White Hill Road Failure, Scotland District March 2020

Carried out geotechnical field testing based upon a review of the “Scientific Study of the Failure of the Road at White Hill” report by AEC, of a slope failure which occurred in November 2014 along a section of the road cut into the side slope of a hill, at White Hill near Mt. Hillaby, in the Parish of St. Andrew, Barbados.

Private Client – Subsurface Geotechnical Investigations for a Tourism Development in Scotland District, New Castle, St. John, Barbados. January 2020

Geotechnical Investigations of Barbados Water Authority (BWA) Reservoirs at Lodge Hill, Trents, Warliegh, and Spring Garden (Ionics Freshwater) August 2017 – May 2019

Carrying out geotechnical field investigations to inform the design of foundation bases for proposed reservoir upgrade sites.

SOL Barbados Ltd. – Installation of a Deep Injection Dewatering and Abstraction Wells at SOL Terminal. Nov 2018 – Dec 2018

Installation of deep injection dewatering and abstraction wells.

Government of Barbados – HMS Dodds Prison – Effluent Waste Water Effluent Sampling Programme. Apr 2011 – April 2018

Project management and supervision of ongoing monthly, and quarterly waste water sampling and laboratory testing and monitoring of waste water effluent, generated from the facility’s sewerage treatment plant and aeration ponds and settlement lagoons, since 2011 to 2018.

COMPLANT China National Complete Plant Import & Export Corp Ltd. – Wyndam Sam Lords Hotel Redevelopment Project – Geotechnical Investigations. Jan 2017 – Mar 2018

Geotechnical investigation which required drilling over forty (40) borings drilled within the proposed building limits, to determine the in-situ strength of the site soil/rock and the condition of the underlying rock and possible existence of caves or fissures within the rock, determination of stratigraphy, detection of any cavities/sinkholes, and bearing capacity.

Everclear Water Inc. – Barbados Water Authority: Desalination Monitoring & Test Well Project (North Coast of Barbados) Jun 2017 – Sep 2017

Carrying out feasibility studies for a proposed sea water desalination plant on the north-west coast of the island and as such required some test wells and monitoring wells drilled within the site. This involved drilling and installation of deep abstraction/injection groundwater wells to specification, and pump testing.

Water Technologies Systems Inc. – Barbados Water Authority: Desalination Monitoring & Test Well Project (South Coast of Barbados) Jun 2017 – Sep 2017

Carrying out feasibility studies for a proposed sea water desalination plant in the south-east of the island, and as such required some test wells and monitoring wells drilled within the site. This involved drilling and installation of deep abstraction/injection groundwater wells to specification, and pump testing.

Jada Group – Worthing Service Station Deep Injection Dewatering Wells. Jun 2016 – Jul 2016

Worthing Service Station deep injection dewatering wells.

Golder Associates Inc. – Coastal Zone Management Program (CRMP) Geotech Slope Stability Study Scotland. Jun 2015 – May 2016

Coastal Zone management program.

Golder Associates Inc. – CRMP Cliff Drilling & Geotech Testing Golder Associates Inc. – CRMP Cliff Drilling & Geotech Testing. April 2016

CRMP Cliff Drilling & Geotech testing.

Jada Group – Installation of 6 Monitoring Wells Service Station. May 2015 – May 2015

Installation of 6 monitoring wells.

Barbados Light & Power Generation Plant Effluent WasteWater Sampling Programme. Jan 2011 – Sep 2013

Project management and supervision of an ongoing Wastewater Sampling & Laboratory Testing & Monitoring Programme, on wastewater effluent from the generation plant cooling towers and site runoff.

Hillis -Carnes Engineering Associates Inc. – Barbados Cane Industry Corporation – Andrews Sugar Factory, St. Joseph, Barbados – Carrying Out STP Soil Borings & Testing. Sep 2013 – Sep 2013

Project management and supervision of the installation of approx. twenty seven (27) STP Soil Borings and testing to approx. 30-50 feet deep.

Hillis -Carnes Engineering Associates Inc. – British American Insurance Building – Geotechnical Assessment– Carrying Out STP Soil Borings Testing & Cement Grouting. Aug 2013 – Aug 2013

Project management and supervision of the installation of four (4) STP Soil Borings and testing to approx. 75 feet deep, and cement grouting of 12 boreholes.

Project management and supervision of a number of geotechnical boreholes were carried out, and monitoring wells installed to the specification of the project’s professional geologist. November, 2011

As a follow on study to previous exploration methods carried out by Subsurface in March and August 2009, and Geophysical survey carried out in March 2010 by Subsurface in conjunction with Michael Baker Jr. Inc.

Whereby, a number of standard penetration test (SPT) borings up to 60 to 70 feet through the overlying alluvial sediments were drilled to determine the classification of these sediments, and an electrical resistivity imaging (ERI) performed over the site.

Rotherly Construction – Sandy Lane Property Installation & Testing of Closed Loop Geothermal Abstraction & Injection Wells/Geotechnical Boreholes. Jul 2011

Project management and supervision of the installation of two (2) abstraction wells 200-feet deep, and two (2) injection wells 200-feet deep at the above property, including pump testing of water production and discharge capacity to required engineer’s standards (Stantec Consulting).

Completion of a number of geotechnical test boreholes including split spoon STP sampling and NQ rock core samples, preparation of borehole logs, and carrying out percolation testing to relevant engineering standards.

Stantec Consulting – Barbados Light & Power Co. Ltd. Water Tank Base Boreholes at Generation Plant. May 2011 – May 2011

Project management and supervision of Subsurface drilling of two borehole to 40 feet deep by air rotary method, to be located under the footprint of a proposed water tank located at a generation plant. In addition, driller’s log of boreholes were completed indicating any anomalies during this process and down hole video recording of borehole substratum.

Stantec Consulting – GAIA inc. / Esso – Airport Aviation Fueling Infrastructure Improvement Project -Geotechnical Study – Borehole Drilling Project. May 2011

Project management and supervision of the drilling of approx. 32 geotechnical testing boreholes, along the alignment of a proposed underground fueling hydrant line, to be installed along the aircraft parking ramps and runway apron area, in order to characterize substrata conditions.