GAZETTE NOTICE NO. 8767

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. Management Actions • Construction material sources should be environmentally sustainable (approved accordingly). • Delivery routes and modes of transport should be approved. • Material storage on site not to be internal or external nuisance. • Where required, a Concrete batching plant shall be located more than 20m from the nearest stream/river channel. • Top soil removed from the batching plant site and stockpiled for reuse during reinstatement. • Contaminated storm water and wastewater run- off from the batching area and aggregate stock piles shall not be permitted to enter streams but shall directed to a pit where the water can soak away. • Suitable screening and containment shall be in place to prevent windblown contamination associated with any bulk cement silos, loading and batching. • Cleaning of equipment and flushing of mixers shall not resulting pollution of the surrounding environment. • Construction wastes (residual earth debris and scrap materials) to be removed for safe disposal. • Encourage recycling where possible (concrete debris for access road surfacing). Contaminated organic matter in the work areas to be isolated for safe disposal • Material residuals to be disposed of in accordance with established regulations. • A site waste management plan will be prepared by the contractor prior to commencement of construction works. This should include designation of appropriate waste storage areas, collection and removal schedule and identification of approved disposal site. • Proper solid waste receptacles and storage containers should be provided, particularly for the disposal of lunch and drink boxes so as to prevent littering of the site. • Provide construction workers with personal protective equipment (gloves, gum boots, overalls and helmets). • Provide temporary toilets and bathrooms for the construction workers at the work sites. • Provide onsite first aid kit accessible by the workers on need. • Isolate the site for access by the local communities during the construction for their safety and health. • Contractor to provide a Healthy and Safety Plan prior to the commencement of works to be approved by the Resident Engineer. • The Contractor shall observe laws relating to public health and sanitation. • All temporary/ portable toilets or pit latrines shall be secured to the ground to the satisfaction of the RE to prevent them from toppling over. • A wash basin with adequate clean water and soap shall be provided alongside each toilet .Staff shall be encouraged to wash their hands Potential Impact Concrete/ cement batching plant Wastes generation and disposal Occupational health and safety Sanitation issues resulting from both solid and liquid wastes on site. The proponent, Tana Water Works Development Agency, is proposing to construct a sewerage service for Kerugoya/Kutus towns and a bulk water supply system for Kerugoya, Kagio, Sagana and Kutus towns in Kirinyaga County. The proposed project shall consist of: (I) Reticulation Sewerage Network within Kerugoya and Kutus towns and construction of two main trunk sewers. (2) New Wastewater Treatment Plant at Riambui Village, Kutus location. (3) The wastewater treatment plant will comprise of — (i) inlet works, (ii) two Anaerobic Ponds, (iii) sludge Drying Beds, (iv) two Facultative Ponds; and (v) two Maturation Ponds The following are the anticipated impacts and proposed mitigation measures: Potential Impact Management Actions Construction • Ensure site safety and security. campsites Locate camps on land already cleared where • possible. • Siting to consider availability of accesses for deliveries, services and any future works. • Acquire NEMA license for the contractors camp and auxiliary facilities. Provide notices, signage and information to the public for their safety at all locations. Install barriers along walkways, crossings and public places affected by the works for public safety. • Where there are potential for nuisance from dust generation, ensure earth moving is under dump conditions (consider watering where necessary). • Inform immediate communities or stakeholders of the activities. • Construction activities will be limited to project sites/routes which already exist therefore limited destruction to vegetation cover. • Stock piling of top soil, construction material and wastes should be done only at designated sites approved by the supervising engineer, erosion prevention through berming of loose soil sites should be done in all areas susceptible to agents of erosion. • Notify public the intent to cut sections of the; road for safety precautions. • Provide signage and safety information in all work areas. • Notify other services providers and open small sections that can be reinstated within the shortest period to avoid disruption of public services. • Mark the lines to avoid conflicts with other activities. • The contractor will be responsible for ensuring that appropriate authorization to use the proposed borrows pits and quarries have been obtained before commencing activities. • Topsoil shall be stripped prior to removal of borrow and stockpiled onsite. This soil shall be replaced on the disturbed once the operation of the borrow site or quarry is complete. Earth moving and • excavations (vegetation clearance, channeling and site preparations) Materials sourcing, from burrow pits and quarries delivery and storage 30th October, 2020 THE KENYA GAZETTE 4341 Air Emissions • and ambient air quality Management Actions after use of the toilet, in order to minimise the spread of possible disease. • The Contractor shall keep noise level within acceptable limits and construction activities shall, where possible, be confined to normal working hours in the residential areas. • hospitals and other noise sensitive areas shall be notified by the contractor at least 5 days before construction is due to commence in their vicinity. • Any complaints received by the Contractor regarding noise will be recorded and communicated to the RE. • Where possible silenced machinery and instruments should be employed to reduce the impact of noise on the existing residents and workers. • Construction hours should be limited to the hours of 8.00 a.m. and 6.00 p.m. daily. • Provision of appropriate personnel protective equipment to the workers. • The Contractor must adhere to Noise Prevention and Control Rules of April 2005. • Strict use of warning signage and tapes where the trenches are open and active sites. • Employ and train road safety Marshalls who will be responsible for management of traffic on site. • Contractor to provide a traffic management plan during construction to be approved by the resident engineer. Workers shall be trained on management of air pollution from vehicles and machinery. All construction machinery shall be maintained and serviced in accordance with the manufacturer's specifications. • Drivers should be sensitized on driving practices that reduce both the risk of accidents and fuel consumption including driving within safe speed limits. • Machines must not be left idling for unnecessary periods of time; this will save fuel and reduce emissions. • The removal of vegetation shall be avoided until such time as clearance is required and exposed surfaces shall be re-vegetated or stabilized as soon as practically possible. • The contractor shall not carry out dust generating activities (excavation, handling and transport of soils) during times of strong winds. Vehicles delivering soil materials shall be covered to reduce spills and windblown dust. Water sprays shall be used on all earthworks areas within 200metres of human settlement. Valuation of affected assets and compensation. Continuous stakeholder engagement. Management Actions • Maximize hiring skilled and unskilled workers from the host community. • Provide secure barriers to keep off the animals from interfering with the plant operations and safety. • In the event of larger wildlife e.g. hippos and crocodiles, TWWDA and KIRIWASCO will ensure appropriate consultations with the Kenya Wildlife Services (KWS) on appropriate management actions. • The sludge will be temporarily held in sludge drying beds for sludge digestion and the dry cake will be safe for disposal. The dry cake can then be sold off/collected for disposal as organic fertilizer for use in local farms. Alternatively, in the event that uptake by local farmers is low, the dried sludge can be landfilled and covered with lime/earth at an appropriate location. • Ensure proper and periodic maintenance of sewer lines. • Awareness rising among community members not to dump solids in manholes. • Regular cleaning of grit chambers and sewer lines to remove grease, grit, and other debris that may lead to sewer backups. • Storage of screenings and grit in closed containers (dumpsters) instead of on the ground and ensuring that all waste is hauled off-site on a scheduled and timely basis. • Ensure appropriate covering/ventilation of the pre-treatment unit. • The perimeter of the proposed site should be vegetated with trees and plants of varying heights thereby forming windbreaker and reduce dispersion of odour. • Regular inspection of the system to ensure performance is maintained at high levels; • Regular monitoring and sampling of the waste water at influent and effluent points as well as in the receiving water bodies; • Communities living within the river basins where the trunk sewers will be constructed should be enlightened on dangers of using raw sewerage to irrigate farmlands. (a) Principal Secretary, Ministry of Environment and Forestry, NHIF Building, 12th Floor, Ragati Road, Upper Hill, 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, Kirinyaga County. 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. MAMO B. MAMO, Director-General, MR/1320373 National Environment Management Authority.