GAZETTE NOTICE NO. 10434

PURSUANT to regulation 21 of the Environmental Management and Co-ordination (Impact Assessment and Audit) Regulations. 2003, the National Environment Management Authority (NEMA) has received an Environmental Impact Assessment Study Report for the above proposed project. The proponent, Kilifi Mariakani Water and Sewerage Company Limited, is proposing to install a 50 cubic meter/per day decentralized waste water treatment facility in Mtondia area, in Kilifi County meant to treat domestic wastewater from Kilifi Town and its environs county. The following are the anticipated impacts and proposed mitigation measures: Possible Impacts Mitigation Measures Air emissions • Decreasing the number of trips carried out by the vehicles will minimize air pollution. • Vehicles to be used during the construction phase are to be kept in good working condition and should not be the source of excessive fumes. Noise pollution • Road traffic movements shall be scheduled to normal working hours (0800 Hrs -1700 Hrs). • All equipment and vehicles on the site should be equipped with noise suppressing measures and kept in proper working order. • Delivery of materials in bulk to avoid repetitive movements of delivery vehicles will be encouraged. • Silencers on equipment such as genet ators will be properly designed. • Temporary noise pollution due to construction works will be controlled by proper maintenance of equipment and vehicles, and tuning of engines and mufflers. • Noise problems during operation phase shall be reduced to normally acceptable levels by incorporating low-noise equipment in the design and/or locating such mechanical equipment in properly acoustically lined buildings or enclosures.- 11th December, 2020 THE KENYA GAZETTE 4939 Possible Impacts Mitigation Measures • Sludge transfer systems such as conveyors, screw pumps, and conduits will be kept clean in order not to generate odours. • Regular cleaning of aeration tank walls and floors, washing weirs, and removing scum regularly, will be done to help in odour reduction. • Where odour emissions could lead to complaints, the provision of covers to the odour sources will be considered, especially for sludge holding tanks and sludge dewatering systems. • Flow regulating chambers, drainage valves, standby pumps, as well as electric standby generators shall be provided to reduce the possibility of wastewater flooding within the wastewater treatment plant site, which results in possible generation of obnoxious smell. • The presence of multiple aeration basins in the plant also reduces overflowing problems. • The current solid waste facility shall be relocated to an ideal location. • When odour becomes an evident public nuisance, synthetic windbreakers (e.g. walls) shall be employed to maintain odour nuisance within each site. Impacts on water • In general, the DTF systems produce a highly treated and well-nitrified effluent that typically meets the required effluent quality standards. Disinfection with chlorine will further suppress bacterial population in the discharged effluent. Thus, the proposed facilities' discharge effluent quality is expected to meet the Minimum Standards contained in Water Quality Regulations, 2006. • The implementation of training recommendations, maintenance plans, and process and effluent monitoring programs will be mandatory. • Sufficient instrumentation and standby equipment (blowers, pumps, and electric generators) shall be provided to ensure an uninterrupted and controlled operation, thus avoid inefficient process performance. • To attain the expected safe effluent discharge, skilled and trained operator will be available for proper process loading, optimization, control, and thus performance. • Continuous sampling and laboratory tests will ensure that the performance of the DTF will be optimized. • The greasy material from the grease trap will be regularly removed and stored in proper barrels and then collected and disposed with the municipal solid waste Impacts on soil • Periodic tests will be done to assure the quality of effluent wastewater, to avoid partially treated wastewater to reach the soils. • Effluent will be appropriately disposed of by ensuring that they meet the required standard prior to discharge taking place. • Effluent quality will be monitored on a continuous basis to avoid partially treated wastewater reaching the soils. • Excavated soil will be utilized for landscaping and then tree planting purposes. Impact on flora • To avoid loss of biodiversity, proper management of DTF outputs will be done. Possible Impacts Mitigation Measures • Limits of construction zones will be identified and marked, and all activity will be kept within marked boundaries. • When detected, sensitive species or habitats shall be conserved. Impacts on the • Tree planting will be done to maintain fauna habitats for avifauna. • No snaring or hunting will be allowed on or around the site. • Contact details for someone who can be called if catching and relocation of snakes, spiders or other unwanted species is needed will be kept at the site. • Labourers will be educated as to the importance of not simply killing all snakes and other fauna that is perceived as dangerous. Health and safety • The contractor shall conform to all the impacts. stipulations of the Occupational Health and Safety Act, 2007. The Act requires the designation of a health and safety representative when more than 20 employees are deployed. • The contractor shall provide ample warning signs, guard rails, warning tape, etc., around open excavations, stacks of material, debris, etc. and shall be held liable for all claims as a result of neglect of such precautions and provisions. • Proper access control shall be enforced to ensure that no u9authorized persons enter the site. • Material delivery vehicles shall be under the control of competent personnel. It will be ensured that persons handling equipment and materials are suitably trained, supervised and adequately instructed. • Railing will be installed around all process tanks and pits. The use of a life line will be required and personal flotation device (PFD) when workers are inside the railing, and it will be ensured that rescue buoys and throw bags are readily available. • A confined spaces entry program that is consistent with applicable national requirements and internationally accepted standards will be implemented. The full report of the proposed project is available for inspection during working hours at: (a) Principal Secretary, Ministry of Environment and Forestry, NHIF Building, Community, P.O. Box 30126-00100, Nairobi. (b) Director-General, NEMA, Popo Road, off Mombasa Road, P.O. Box 67839-00200, Nairobi. (c) County Director of Environment, Kilifi County. A copy of the EIA report can be downloaded at www .nema.go.ke The National Environment Management Authority invites members of the public to submit oral or written comments within thirty (30) days from the date of publication of this notice to the Director-General, NEMA, to assist the Authority in the decision making process regarding this plan. Comments can also be e-mailed to dgnema@nema.go.ke MAMO B. MAMO, Director-General, MR/1421322 National Environment Management Authority. Possible Impacts Noise management Land contamination. • materials and waste management Ecological • management including habitat removal and restoration and soil mitigation