Energy Consumption. The Project will be powered by a set of eleven 600 kVA diesel generators. All eleven generators will be required during plant startup and thereafter 5/6 generators will be required to operate the plant. The annual energy consumption is estimated to be 9,600 MWh. This estimated energy consumption translates to 46kWh/ton of cement which is within the benchmark range provided in the WBG EHS Guidelines for Cement and Lime Manufacturing. As noted, the company plans to connect to the grid electricity from 2024 onwards. Clinker grinding is via a ball mill.
Air Emissions. Baseline ambient air quality (SOx, NOx, PM10 and PM2.5) monitoring was undertaken as part of the ESIA at the Project site and each of the four commercial installations adjacent to the site. The baseline concentrations of these parameters are aligned with that defined in the WBG General EHS Guidelines.
During Project operation fugitive emissions from materials storage and transfer, the grinding process, as well as clinker transportation from the Port to the site will contribute to Project related air emissions. In addition, there are point source emissions from the generators. The plant design has included the installation of dust collectors at various material transfer points and dedusting equipment with the storage of clinker, gypsum, and cement in closed sheds with hard standing surfaces. Clinker will be transferred from vessels via grabbers located on cranes and then loaded onto trucks. Fouta will ensure trucks contracted for clinker transportation are covered to mitigate against dust during truck movement.
Manufacturer emission specifications for the generators are within WBG General EHS Guideline values. As part of the Project ESIA, an air quality modeling for point source and fugitive emission was undertaken and the findings indicate that ambient air quality (PM, SO2 and NOX) is complaint with that defined in WBG General EHS Guidelines (highest concentrations for PM10 for the 24 hr averaging period being 5.05 µg/m3 and 4.28 µg/m3 for PM2.5). However, given potential inconsistencies with the methodology applied to the air quality modelling as identified by IFC, the Company will engage a suitably qualified specialist to conduct a new air dispersion modelling exercise for the Project to confirm the findings defined above. Based on the associated findings the company will agree with IFC on additional mitigation measures if deemed applicable and an ambient air quality monitoring program. (ESAP #6).
Greenhouse gas (GHG) emission from the Project is estimated at 10,132 CO2 eq annually from logistics operations and diesel fuel to be consumed at the Project and hence not significant per the General WBG EHS Guidelines. Due to the lower weight associated with importing (transporting) clinker as opposed to cement, the Project will result in a GHG emission reduction of 3,172 CO2 eq annually.
Noise: From the baseline noise monitoring conducted as part of the ESIA, the current noise levels are within the WBG EHS Guideline requirements for industrial/commercial areas. To confirm Project related noise impacts are aligned with the guideline requirements referenced, the Company will undertake noise modeling prior to operations commencing and define mitigation measures if applicable. In addition, a noise monitoring program will be implemented to ensure ongoing compliance with the WBG General EHS Guidelines. The Company will submit monitoring results to IFC every three months for the first year of operation (ESAP #7).
Water Consumption. The Project is expected to consume some 35,000 cubic meters of water annually for general use such as sanitary, office and equipment cleaning, and irrigation purposes. Water will be sourced from a borehole, already drilled within the site. This will be supplemented by rainwater (to be collected within the site) as appropriate. There is no notable risk to other water users from this consumption due to the distance from the communities and the generally high water table in the area for most of the year. Drinking water at the offices will be supplied separately by contracted vendors.
Solid Waste Management / Wastewater Treatment. The main solid wastes to be generated by the Project include wooden pallets, scrap metal, e-waste, paper, waste from material/equipment packaging materials, vehicle and equipment parts, and raw material residues from milling operations. These wastes will be reused/recycled as appropriate and where this cannot be achieved, disposal will be via contracted companies. These waste management measures, including measures on waste minimization, segregation and quantification will be included in the Environmental Risk Management Procedure per ESAP#2.
Sewerage will be collected in an underground septic tank which will be emptied regularly by a contracted waste transporting company. Each building will be connected via the sewerage system to the septic tank. The site has been designed with a concrete drainage structure around key installations to collect and discharge stormwater from the premises. The stormwater drains will have oil / grit separation equipment to retain oils, grease, and grit (dust) at various points prior to discharge into the neighboring open land (also part of the Company’s leased land). Regular water quality tests will be undertaken at discharge points to confirm compliance with local regulatory requirements, as applicable. These measures will be documented in the Environmental Risk Management Procedure.
The main hazardous materials in the project will be diesel for power generation, laboratory materials, engine oils, and lubricants. Diesel will be stored in two 100,000 litre above-ground storage tanks within the site. These tanks will be in a bunded area with sufficient containment capacity for spills. The Environment Risk Management Procedure (ESAP #2) will provide adequate measures for handling and transportation of hazardous materials in the operations, including requirements for adequate bunding and secondary containment of hazardous materials, and contracting of a licensed waste management company for the collection of hazardous wastes e.g. used oils.