GAZETTE NOTICE NO. 5273

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, Athi Water Services Board, is proposing to conduct Nairobi Rivers Sewerage Improvement Project (Narsip) Phase II in Nairobi City County. The priority areas of implementation based on the level of development is as follows: Construction of 81 km trunk sewers. This will include: Duplication of Dandora box culvert from Gatharaini Junction to Njiru Junction - 3 km. Reconstruction/Upgrading of Uhuru Highway Trunk Sewer to Mater Hospital - 2km.Duplication of Mombasa Road Enterprise Trunk Sewer - 3km. Extension of Mombasa Road Enterprise Trunk Sewer - 2km. Reconstruction of Kirichwa Kubwa trunk sewer - 4km. Duplication of Nairobi River! Eastleigh Trunk Sewer from Eastleigh to Kariobangi and extend to the confluence of Gitathuru and Nairobi River- 10km. Duplication of Parklands Trunk Sewers - 4km. Extension of Parklands Trunk Sewers - 2km. Extension of Karen Trunk Sewer - 8km. Gitathuru TS extension/duplication to Kitsuru - 4km. Ruiruaka River TS Extension to Ruaka - 3.5km. Old Airport Road (Utawala Area) Trunk Sewer Extension -5km. Upgrading Milimani Chiromo Trunk Sewers - 8km. Extension of Umoja TS from Umoja to Saika -5km. Riruta South Trunk sewer Extension - 3km. Mathare River Trunk Sewer Extension - 3Km. Extension of South Nairobi Dam Trunk Sewer - 2km. Ngara Trunk Sewers - 10km Construction of 190 Km lateral and reticulation sewers. This will include: Karen reticulation - 10km. Dagoretti - 5km. Embakasi reticulation - 10km. Mihango reticulation - 10km. Embakasi reticulation - 20km. Mihango reticulation -10km. Kilimani reticulation - 10km. Kileleshwa reticulation - 10km. Upper hill - 10km. Westlands sewer upgrade - 10km. Eastleigh sewer upgrade - 10km. Tassia I and 2 reticulation - 10km. Umoja Innercore reticulation - 10km. Kariobangi South - Umoja III - 10km. Kangemi reticulation - 5km. Mathare North and Huruma reticulation - 10km. Thome / Garden Estate- 10km. Babadogo / Lucky Summer - 10km. Maili Saba - 10km. Marurui - 10km. Mountain View - 5km. Marura - Kariobangi North - 10km. Satelite reticulation - 5km. Construction of anaerobic, facultative and maturation ponds at DESTP site to convert Kiu River pumping system to ponds. The following are the anticipated impacts and proposed mitigation measures: Impacts Proposed Mitigation Measures Biodiversity loss • Only clear vegetation absolutely necessary for the construction activities. • Avoid the use of Invasive Alien Species in the landscaping activities. • Determine Access roads which are to be used by machinery used in the construction and Site clearance phase development to avoid the unnecessary trampling of vegetation that will be maintained within the development area. • Ensure that green belts' which have been proposed for the STW are large as possible as small patches may not be able to support viable populations of some species and these small patches tend to more susceptible to edge effect. It possible position these green belts in adjacent to existing vegetated areas. In addition species richness tends to increase with area, which would be the desired outcome of the incorporation of green belts. Disturbance of traffic • Provide diversion routes where possible. flow • Give a construction itinerary in advance. • Erect warning signs of ongoing works. • Expedite construction works so as to reduce the times where roads are blocked. • Traffic department should approve crossing plan prior to construction, and should approve obstruction times during construction. • Access of residents should be facilitated by installing appropriate temporary bridges over the pipeline trenches. • Suitable warning signs should be placed at near locations and should be visible at night. • A guard should be available 24 hours to help people access across pipeline trenches. • Alternatives access ways should be communicated to the community. Solid waste • Use an integrated wastes management system observing the following hierarchy of options: Reduction at source Recycling Reuse Combustion Land filling. • Incorporation of waste management commitments contained in the Waste Management Guidelines. • Agreement with suppliers to accept the return of unused materials. • Agreement with and license details of companies to be used for the off-site transport of wastes. • Workforce training programs in waste minimization practices. • Where practical any excess materials will be returned to the supplier. • Waste oil will be collected for transport and off-site disposal littering, specifically of the natural areas, should be prevented. Adequate containers for litter removal should be supplied on site. These containers should be emptied on a regular basis and the contents removed to an appropriate and licensed waste disposal site. • The Contractor shall set up a solid waste control and removal system. • Bins shall be emptied on a daily basis. • Waste and litter shall be disposed of into scavenger - and weather proof bins. The contractor shall then remove the refuse collected from the working areas, from site at least once a week. Adherence to Waste Management Regulations of 2006. Air pollution • Drivers should be instructed on the benefits of driving practices that reduce both the risk of accidents and fuel consumption, including measured acceleration and driving within safe speed limits. 2nd June, 2017 THE KENYA GAZETTE 2653 • Contractors should consider additional ways to reduce potential impacts including implementing a regular vehicle maintenance and repair program. • Recruit staff from the surrounding communities to decrease the travelling distance thus reducing emissions from vehicular traffic. • Ensure that all vehicles involved in the transport of construction material and staff, and machinery involved in the construction is properly maintained and serviced. • Machines must not be left idling for unnecessary periods of time; this will save fuel and reduce emissions. • Use of dust control methods, such as covers water suppression. • Ensure that all trucks carrying aggregate and sand are covered during delivery to the site. • Ensure that all material (sand and aggregate) stockpiled on the site to be used in construction activities are regularly sprayed to reduce the effects of wind whipping. • Care must be taken in the unloading construction materials (aggregate, sand and cement) to prevent spillage. If a spill occurs, this should be cleaned up as soon as possible. • Extra care must be taken to reduce dust in periods when wind speed is greatest and the rainfall amounts are lowest. This will involve extra wetting of the construction area to suppress dust particles. • Retain a buffer area of trees and other vegetation generally around the perimeter of the development site which will serve as a natural windbreaks which may reduce the level of dispersion of dust particles generated during this phases of the development. • All raw materials must be sourced as close as possible to the construction site thus reducing the emissions from vehicular traffic. • All waste must be transported off- site for processing, not burnt or stored for any longer than is absolutely necessary. • Adherence to Air Quality Regulations, 2014. Soil erosion • Only remove vegetation from areas for the STW/sewers construction. • Install appropriate drainage systems to direct water away from slopes. • Avoid as far as possible the traversing of bare soil by vehicles to reduce soil compaction. • Designate a main access route for heavy machinery. • Avoid site preparation in period when wind velocities are highest. • Areas storing hazardous substances such as diesel must be properly contained in a bunded area (With capacity to contain I /z times the amount of substances stored. This area must be situated away from project activities and signs indicating the storage of these substances erected. Care must be taken when handling these hazardous substances to avoid spills. • In the event of an oil spill the contaminated soil must be removed and disposed off. Noise and vibration • Best available work practices will be employed on-site to minimize occupational noise levels. • All construction equipment will be regularly inspected and maintained in good working condition. • Combine noisy operations so that they occur at the same time. The total noise level will not be significantly louder than the level produced if the operations were to be undertaken separately. • Noisy operations will be carried out strictly during the day time. Switch off engines when not in use • Access roads should be cut that are exclusively used for the transportation of workers, goods and materials. These roads should be sited in such a way that the noise from this movement affects as few of the existing residents as possible. • Where possible silenced machinery and instruments should be employed to reduce the impact of noise on the existing residents and workers. • Machinery, vehicles and instruments that emit high levels of noise should be used on a phased basis to reduce the overall impact. • These pieces of equipment such as drills, graders and cement mixers should also be used when the least number of residents can be expected to be affected, for example during periods where most residents are at work or school. • Temporary barriers such as earth berms, zinc fencing and sound dampening fencing such as acoustic screens should be employed to reduce the impact of noise to the existing residents. • Ensure that construction activities for the development of the project are staggered to decrease the levels of noise and vibration in the area. • Construction hours should be limited to the hours of 8.00 am. and 6.00 p.m. Damage of underground Get maps of the underground infrastructure infrastructure from the relevant institutions. • Sensitize workers carrying out Excavations so that they exercise caution to minimize chances of underground infrastructure damage. • Work closely with the responsible institutions so that incase of damage, the services are restored within the shortest time. • Notify affected parties if service needs to be temporarily relocated or was affected by the project works. Structural stability • The geotechnical report should include suitable measures for confining vibrations within project sites. These measures should be tailored according to the proximity of buildings to the project sites and earthwork program. • These recommendations identified in the geotechnical report (such as secant piling or sheet piling or establish cut-off walls) should be implemented by the contractor and supervised by EHS Advisor. • Blasting should not be done near houses or power lines. Spread of HIV and AIDS • Sensitize the migrant workers on dangers of risky sexual behavior. • Have VCT services on site and encourage workers to undergo the same. • Uptake of VCT by project workers and the host community. • Provision of condoms to the workers. • Preference for hiring workers from local community to minimize influx of migrant workers. Occupational health and • Ensuring that the drivers and machine safety operators hired to work on the site are qualified. • Workers on site must be provided with appropriate PPE. • Appropriate signs must be erected on the site to warn workers and visitors. • There should be safety policy clearly displayed on the site. • Machines should be properly maintained. • A first aid kit should be provided and a trained first aider should always be on site. • Fire extinguishers should be provided. • Proper scheduling of activities to avoid workers being overworked. • Machines/equipment for the intended purpose. • No worker should be allowed on site while under the influence of alcohol or other inebriating substances. • Only the Blaster licensed by the Mines and Geology should carry out blasting on the site. • Blasting should only be carried Out as per the provisions of the blasting license away from house and power lines. • All charged holes must be covered with appropriate medium to arrest fly rocks. • Inspection of workers to ensure they are using the PPE at all times when necessary. • Comply with the provisions of OSHA 2007. Displacement of people • Avoid displacement as much as possible. • Prompt and fair compensation of all the PAPs in full prior to beginning of construction works at the site. • Pre and post resettlement counseling's support. • Financial education for the recipients of compensation funds. • Identification and full resettlement assistance for vulnerable PAPs. The full report of the proposed project is available for inspection during working hours at: Director-General, NEMA, Popo Road, off Mombasa Road, P.O. Box 67839-00200, Nairobi. Principal Secretary, Ministry of Environment and Mineral Resources, NHIF Building, Community, P.O. Box 30126- 00100, Nairobi. County Director of Environment, Nairobi City 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 of this project. GEOFFREY WAHUNGU, Director-General, MR/3403 133 National Environment Management Authority.