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Item Environmental impact assessment for the construction and setup of a sewerage system in Baarah Island, Haa Alif Atoll, Maldives(2017-09) Water SolutionsThis report discusses the findings of an environmental impact study undertaken by Water Solutions Pvt. Ltd in order to fulfill obligatory requirements of the National Environment Protection and Preservation Act, Law No. 4/93 for the proposed setup of the sewerage system (hereafter referred to as the project) in Baarah island, Haa Alifu Atoll, Maldives. The purpose of this EIA is to identify and minimize potential adverse environmental impacts related to this project and enhance the overall quality of the project. By examining the project location, the legal framework and the existing environmental components such as marine ecology and the socio-economic aspects, this EIA provides useful information regarding the extent, nature and the magnitude of impacts that are likely to occur. The EIA will also help to identify the long term socio-economic benefits to the community after implementing this project. It also provides a framework for future monitoring of the environment, so that changes can be monitored and corrective measures can be undertaken. The proposed project aims to establish a sewerage collection and disposal system in the island of Baarah in Haa Alifu Atoll. The concept designed for Barrah is a gravity type wastewater collection and disposal system. The existing systems are mainly based on septic tanks and small bore sewers. Without proper maintenance these systems are prone to damage and contamination of groundwater can occur. The contamination of the groundwater has occurred to the extent that it cannot be utilized for any potable use. Therefore, the current setup is not environmentally acceptable nor suitable. The sewerage system for Ha. Baarah will be a gravity sewerage system where sloping pipelines will allow waste water from the entire island to flow to three zonal pumping stations. The sewage will be pumped from the pumping station to the treatment plant where it will be treated and discharged via a sea outfall pipeline into the sea. The sewerage system will comprise of elements of a given specification for sewer mains, cleanouts, manholes, vents, pump stations, outfall pipeline and diffuser that will ensure a 30 year design flow The sewerage system therefore comprises of the following components: a) Household inspection chambers. b) A gravity sewerage reticulation network. c) Reticulation pumping stations and pressure main system. d) Construction of a sea outfall to discharge the sewage into deep sea. The proposed project will ensure that the groundwater of the island does not get contaminated through improper sanitation systems. It will also ensure that the surrounding marine environment will improve in terms of environmental quality and will ensure pollution from sewage does not occur on the near shore environments. The project is expected to bring several positive impacts on the environmental quality of the island and the surrounding reef. Particularly, the most significant benefit would be achieved through improvement in the bacteriological quality of the groundwater. The health benefits of the project are worthy of noting as the improvement in water quality are going to bring significant health benefits to the community. Environmental & social impacts and the mitigation measures Several environmental impacts of this proposed project have been examined through a number of processes. These include consultations with the project development team, field surveys, observations and assessment, and field experience gained from similar development projects implemented throughout the country. Potential positive and negative impacts on the environment have been considered. The assessment indicates environmental impacts, both during the construction and operation stage. During the construction period, impacts are likely to occur on the marine and terrestrial environment (groundwater). Most of the impacts during the construction period are impacts related to construction waste, dewatering, disruptions to the local traffic, dust emission, damage to the reef during sea outfall construction and noise. During the operational stage of this project, there will be both positive and negative impacts. Positive impacts include the improvement of the ground water quality of the island. Negative impacts include the increased in extraction of groundwater for toilet flushing that may increase the chances of groundwater salinization at a much accelerated rate. This project does foresee some negative impacts even during the construction stage but is geared towards improving the overall environmental quality of the island, most notably the environmental health. The project is presently planned to lay the sewer pipeline along the centre of the exiting road. During this process, dewatering and construction pose some challenges. Previous experience of sewer construction in the Maldives has indicated that excavation depths more than 3.5m are not recommended for conventional dewatering methods to avoid the risk of undermining and trench collapses as well as loss of structural integrity of the surrounding earth. For the purpose of the Baarah design, the maximum depth of excavation will not exceed 3.5m as per the Design criteria and technical specifications for conventional gravity sewerage systems guideline released by the Water and Sanitation Unit of the Environmental Protection Agency (Environmental Protection Agency, 2015). Strict reference to these criteria will be followed and necessary as the streets are very narrow and congested, leaving limited space for mechanical excavation between buildings for the installation of pipelines. The lack of an established land use plan for the island is also a draw back for Baarah. No land used plan means that future projections rely solely on population statistics rather than the land physically available for future development. The present design is based solely on the existing populated area, centrally located in the island. There are large areas of the island undeveloped and unzoned due to lack of a land use plan. Large areas of the island are used for agriculture and pilot projects have been established with aid agencies to try new agricultural technologies. The island is a potential hot spot for future tourism development due to the vase natural resources (beach, mangroves and thick forests and plenty of land). Different types of developments such as guesthouses and restaurants may require grease traps to prevent large influxes of unwanted material into the sewerage network. Therefore the present design of the system has not considered these future developments and in the event of such developments, the existing system will require upgrading. Requirements may need to be specified at a policy level to counter this issue. Therefore this is a potential risk factor in this project. Despite these shortcomings the project does not pose serious threats to the natural environment (marine and terrestrial) and will directly benefit the environment and the community, both in the short and long term. Minor negative impacts with varying significance will occur as the project is implemented. They include dewatering and localized salinization, disruption to public transport, dust emissions during pipe laying work and reef damage during the process of outfall construction. The pump stations have not been placed around the periphery of the island, instead are located within the population zone. This could pose the issue of foul odour in the event of a system failure whereby the foul odour abatement mechanism is affected. Incorporating the pump stations in the populated areas is a necessity and this design factor will enhance the functioning of the overall system. The project will benefit the community and the island in the long term. It is important to ensure that the project implementation is carried in a sustainable manner and in such the sewerage system can be maintained in a cost effective manner as and when required. It is therefore in the opinion of the consultant that the project does not foresee significant negative environmental impacts and should be allowed. Although the project will benefit the community, the proposed design has a number of disadvantages. Construction of pump stations underground on the streets is seen as a design issue that could have operational difficulties. Instead, the pump stations could be located within the residential block boundary with a small plot of land allocated for the pump station. Selection of sites can be focused on places such as mosque, symmetry and from other public buildings or plots of land. With the present design, a number of operational difficulties are anticipated. Experience from similar systems setup elsewhere in the Maldives have been studied and reviewed for this project. The reviews and experiences from these systems are not infavour of the present design and this is something that needs to be considered before undertaking the project. Sanitation systems must be both environmentally and socially friendly and acceptable. As important as the design is the operation and maintenance. Operation and maintenance should be viewed as a key sustainable aspect of similar projects. No matter how good a design is, the sustainability and acceptability will depend on how good the system functions in the operational period. With the pump stations being located on the road itself, there are a number of such difficulties which are equally as important as the engineering design aspects.Item Environmental impact assessment report development of 100 bed hospital at Addu City(2017-10) Land and Marine Environmental Resources Group1.1 Background The non-technical summary outlines the findings of the Environmental Impact Assessment of the construction and development of a 100 bed tertiary level hospital at Hithadhoo, Addu City. The proponent of this project is the Ministry of Housing and Infrastructure and total estimated cost of the project is approximately MVR 162 million. The proposed project will be developed through redevelopment of the Equatorial Convention Centre which was developed in Addu City to host the SAARC Summit in 2011. Parts of some ponds introduced for aesthetic and flood control purposes within landscaping of ECC development would be backfilled for the construction of the Services and Utilities buildings on the south western and south eastern side of the main building. Once completed, the hospital will be handed over to the Ministry of Health, as the main operator and regulator of the Health sector in the Maldives. The facility will be constructed and developed to provide care in a number of departments and areas, details of which are provided in Section 5.2.1. 1.2 Key impacts, mitigation measures and alternatives Impacts on the environment from various activities of the project development work (constructional impacts) and operational impacts have been identified through interviews with the project management team, field data collection and surveys and are also based on past experience of consultant in similar projects. Impacts were analysed for their significance with the aid of a Leopold Matrix. In any development project, major direct impacts to the environment occur mainly during the construction phase. Potential direct or indirect impacts on the environment from the proposed project include: Moderate impacts on pond water and groundwater resource due to backfilling works; Minor impact on vegetation due to the need to cut down vegetation located at the plots allocated for construction of infrastructure; Impact due to air and noise pollution during construction work; Impact due to flooding within vicinity Impact due to waste generation, especially during operational phase Risk of accidents on hospital staff and patients Positive impact on social wellbeing and health due to provision of good quality care Mitigation measures are discussed for the activities which would have potential impacts during the construction and operational phase of the project. In general, during the construction stage it is important to use a method of construction which has the least impact on the environment. Specific measures highlighted include: • Preplanning ways so as to expose backfill material sourced from MRDC, Addu City to rainfall, to decrease its salinity • Proper waste management and disposal to mitigate issues due to domestic waste and hospital related biohazardous waste • Establish Standard Operating Procedures for all departments and facilities at the hospital, so as to avoid accidents which pose risks to the staff and patients Detailed mitigation measures are discussed in Section 11 of the report. Alternatives has been considered with respect to project location, as there is disagreement from the Council regarding proposed location. While proposed location is an existing structure and thus project development would have minor impact on environment, it is also considered by the island community as a site of significance and hence do not want to turn the facility into a hospital. The no-project scenario is also considered, which would mean that all environmental impacts due to the project and disagreements regarding use of ECC for the project would no longer be an issue. However, this means that health care for the population of Addu City will be provided as is now, through the Regional Hospital, which does not offer all of the facilities as proposed in the project. Hence, the community would not benefit from many benefits offered through better health care facilities and services offered through the project. The environmental impacts predicted for the project are minor to moderate, given that the project development is mainly at an existing structure. Hence the benefits of developing the hospital and better health care facilities outweigh the cost to the environment and are seen to be far more beneficial than the cancellation of the project. Therefore the “no-project” scenario is not an ideal solution and it is recommended that the project be continued, but with the proper implementation of all mitigation measures proposed in the report. One key recommendation of the consultant is the formulation and implementation of regulations which regulate the healthcare sector, especially those related to development of healthcare facilities (and criteria) and waste disposal from healthcare facilities. This is crucial for the improvement of the sector through both proper service provision and mitigating environmental impacts.Item First addendum: K. Villimale environment impact assessment to Villimale' west harbour construction project, Kaafu Atoll, Maldives(2017-10) Hussain, FirdousThis is the first Addendum to the Environment Impact Assessment (EIA) for the west harbour project in Villimale’, Kaafu Atoll. The project is proposed by Ministry of Housing and Infrastructure. A Scoping Meeting for EIA addendum was held on 13 July 2017, following the addendum application where main issues related to the proposed change were discussed. This EIA addendum report aims to assess the issues highlighted in Terms of Reference (ToR) agreed between EPA and proponent. Furthermore it is to fulfil the requirement of the Environmental Protection and Preservation Act of the Maldives (Law No. 4/93). Construction of K.Villimale’ West Harbour was contracted with MTCC on 19th May 2015, whereas an environmental assessment was undertaken for this project on November 2015 by MEECO. Construction phase of the project was commenced during November 2016 during the extended period of EIA DS, but it was halted within few days to bring changes to the concept. According to the EIA, condition of the existing harbour has been deteriorated over the years with the existing sand-cement breakwater fallen apart providing no wave protection from the west side. In addition to being used as a harbouring area, west harbour in Villimale’ also serves as a boat beaching and maintenance area. On top of these issues, the project aims to provide a proper landing craft (LC) loading area for waste transportation between Villimale’ and Thilafushi as the island has never had such an area before. Initially waste loading was carried out from a temporary ramp located on the west side of the island near the waste disposal area. The ramp was open to the sea on the west with no protecting seawall or reakwater. Similarly, current ramp used by LC is a temporary rock boulder bed shaped in the form of a ramp which is located at the southern end of the west harbour old breakwater. The area still phase the issues of being open to the predominant wave direction during the southwest monsoon. Considering the issues, Vilimale’ is in urgent need of a south west harbour reconstruction accommodating a better and feasible ramp for LC operation. In the initial harbour concept, LC loading ramp was proposed to be constructed at the southern end of the harbour in such a way that it can be accessed from within the harbour. Consequently, operating LCs would be subjected to move back and forth along a length of about 100m (total length of the harbour and channel) which is a risky task given the size of the landing craft and the anchoring vessels. Maneuvering a LC within the harbour may not be practical as the harbour width is 21m and clearance from all sides may not be available at all times of operation. LCs operated by WAMCO for waste transportation measures around 35m by 10m in size. At present, LC operates to Villamle’ around 2-3 days a week. However, WAMCO is planning to continue operation every day to cater the increasing amount of waste from Villimale’. To continue the operation smoothly on a regular basis without obstruction, a proper loading area with suitable anchoring facilities are needed. Therefore, an amendment to the initial concept has been proposed to dredge a new channel from the south end of the harbour, opening to west which will mostly be used by the LCs in waste transportation between Villimale and Thilafushi. The channel measures 34m by 16m in dimension with its south side proposed to be protected by concrete T-units. A concrete ramp measuring 16m by 12m will be constructed on the eastern side of the channel. The ramp will be reoriented to face the newly proposed channel. This is a much needed amendment as the initial location of the ramp is not feasible for LC operation. Though the channel will be open to the western sea, ramp area will provide proper anchoring facilities with a quay-wall to anchor alongside. In the EIA report the consultant has recommended to consider including culverts in the breakwater to enhance water circulation to prevent water stagnation within the harbour basin. But the newly proposed channel will ensure proper water circulation within the harbour alleviating the need for culverts. This addendum addresses the mentioned modifications to the harbour concept together with its environmental aspects. Thus, Villimale’ West harbour project with the proposed change will alleviate three main issues related to socio-economic development of the island. They are providing a safe and secure harbouring facilities to the vessels together with an easily accessible beaching area and a feasible waste transfer mechanism for the LCs of WAMCO. Environmental impacts of the proposed change were assessed for both construction and operation stage of the project. Most of the identified impacts are positive as they will improve the socio-economic situation of the island. As in all construction projects of this nature and explained in Villimale’ harbour construction EIA, the main negative environmental impact of the project is identified to be the movement and settlement of sediment on the reef and habitat loss during the dredging and breakwater construction. However, the benthic cover of the project area including the proposed channel location is predominantly composed of dead corals, sand and rubble. Hence, combined negative effects are considered to be insignificant compared to the positive effects of the project with the proposed change. Effective impact mitigation measures are to be taken during the construction. It is advised to keep the proposed channel closed until all the dredging is carried out which will prevent the dispersion of suspended sediments. In addition to this, it is strongly recommended to adhere to the mitigation measures proposed in the initial EIA which is sufficient for the project. A special attention should be paid to protect the coral gardening area on the north of the west harbour against sedimentation. Environment monitoring program discussed in 2015 EIA is sufficient and should be followed. Additionally, it is important to visually access and conduct a community consultation to identify whether the harbour basin experiences rough turbulence due to the two channels to an extent where it makes the usage of harbour difficult. In an environmental and technical point of view, the proposed change to the west harbour concept of K.Villimale is justified and beneficial in number of ways.Item Environmental impact assessment reclamation of 15 hectares of land at Thilafushi for development of the regional waste management facility for Zone 3(2017-11) Water SolutionsThis report discusses the findings of Environmental Impact Assessment (EIA) study undertaken by Water Solutions Pvt. Ltd. at the request of Ministry of Environment and Energy for the proposed reclamation of 15 hectares from the shallow lagoon at Thilafalhu, Male’ Atoll. Thilafalhu is the lagoon where Thilafushi is located. The reclamation and coastal protection project is the first step to establish a Regional Waste Management Facility for Zone III at Thilafushi to manage and dispose waste which is generated from islands in the central 4 atolls of the Maldives. The reclamation project involves reclamation 15 hectares of shallow lagoon at Thilafalhu, Thilafushi to height of +1.7 m above mean sea level. Sand is proposed to be borrowed from the lagoon of Thilafushi near the reclamation area located on northern side of the proposed site. It is estimated that total of 525,000 cbm of sand will be required for this reclamation. The sand would be dredged using Cutter Suction Dredger and dredged sand will be pumped to the reclamation area from the dredger. The reclaimed land would be protected using 510 m rock boulder revetment on southern side and 475 m revetment on northern side. Ministry of Environment and Energy would undertake a detail design using their engineer based on observations, issues, and concerns raised during the EIA process. Environmental impacts of this project were assessed and most of the environmental impacts of the project have been identified as resulting from the dredging and reclamation works. Dredging to borrow sand for the reclamation work will be undertaken using Cutter Suction Dredger and this is particularly a method that creates lot of sedimentation. Reclamation work for filling and levelling work would be undertaken using excavators and bulldozer which will have an impact on the marine environment during the initial stage of the project. It is anticipated that impacts of this projects will be felt on the marine environment of the Thialfushi reef system. Mitigation measures for the negative impacts have been identified and outlined in the report. Sedimentation control methods have been specifically focused to reduce its impact on the surrounding marine environment. An important mitigation measure is the use of bund walls in the reclamation area to contain sedimentation and reduce its impact on the marine environment. In addition, completing the dredging and filling works in the shortest time frame, during north east monsoon is also a significant mitigation measure to minimize the impact of sedimentation on the marine environment. The proposed mitigation measures shall be followed in order to minimize environmental damage. The measures proposed to mitigate environmental impacts is considered to be appropriate, thereby minimizing the impact by about 90%. The negative environmental impacts of the proposed project would be sedimentation and destruction of the lagoon and damage to some areas of the reef, which will cause death of corals in the direct impact zone and partial death of corals in other areas of the coral reef. During dredging works, the sedimentation will also affect the fish species in the vicinity of the project area. Several alternatives to the proposed project were considered, all of these alternatives cannot be implemented for various reasons including issues related to regulations, cost, and environment factors. The present project design seems to be feasible option in terms of costs, durability and safety. It is inevitable that there would be negative environmental impacts of this project. It will not be possible to avoid environmental damage entirely, but ways to minimize damage are critical factors to consider during implementation. An Environmental Management Plan (EMP) with environmental monitoring has been recommended including important elements that require regular checks. This monitoring component shall be adhered to and will allow the assessment of changes due to the implementation of the proposed project. As the socioeconomic impacts are going to be felt in the long term, monitoring these changes is very essential. The proposed reclamation pose threats to the marine environment of the Thilafushi and its lagoon. There will be direct and indirect damage to marine environment in the vicinity of the project site. Some of the corals patches, mostly in the reclamation area in the shallow lagoon will die due to smothering as well as from construction activities. But these are damages that cannot be entirely avoided. The project involves negative environmental impacts, such impacts are not severe as not to go ahead with this project. The project is justifiable in light of the socio-economic conditions and anticipated benefits resulting from the project, which seem to outweigh the negative environmental impacts.Item Environmental impact assessment report agricultural development project at Hulhidhoo, Vaavu Atoll(2017-11) Land and Marine Environmental Resources Group1.1 Background The non-technical summary outlines the findings of the Environmental Impact Assessment of the proposed agricultural development at Hulhidhoo, Vaavu Atoll by Aarah Investment Pvt Ltd. The capital cost of the project is MVR 10.43 million. 1.2 Project Detail The proposed project involves the development of Hulhidhoo as mix-use island with an agricultural and tourism component. The agricultural component of the project utilizes hydroponics technology with a vertical farming system to cultivate vegetables and herbs. The produce will be supplied to resorts within the Atoll. The tourism component of the project involves the construction of a Water Sports Centre at the western side of the island. This will cater to the resorts, and can also be used by the atoll community, if desired. In addition to the two key components, the project also involves construction of a football court and coffee shops on the island. 1.3 Key impacts, mitigation measures and alternatives 1.3.1 Key impacts Impacts on the environment from various activities of the project development works (constructional impacts) and operation of the facility (operational impacts) have been identified through interviews with the resort management, field data collection and surveys and are also based on past experience of consultation in similar development projects, as well as a review of similar projects. Impact analysis was done using the Leopold matrix. The potential direct or indirect impacts on the environment (on land and reef system) from the proposed project include: ➢ Moderate direct impacts on the marine ecosystem quality due to construction of access jetty (piling works) ➢ Major impact on terrestrial environment due to need for vegetation, especially that at the mangrove area ➢ Minor impact on groundwater due to dewatering during construction stage and use of septic tank system during operational stage ➢ Minor impact on seawater quality due to brine discharge during operational phase ➢ Impact on ecosystem and air quality, due to solid waste generation during construction and operational phase Positive impacts due to the project are the positive social impacts, in terms of job availability especially during the operational stage. The training programmes for the Atoll community in the area of hydroponics also opens opportunities for new business ventures. The open access to the water sports centre and football pitch is a major social benefit, as this promotes a more inclusive development. Furthermore, the implementation of the solid waste disposal programme by the proponent as a part of the CSR component of the project, is a major benefit for the community, as it addresses a key issues being faced by all islands communities of Maldives. Overall, the project has a positive impact, on the national economy, and that of the Atoll community. Additional impacts are discussed in Section 9 of the report. 1.3.2 Mitigation measures The severity of impacts is predicted by reviewing the design plans and construction methods. Mitigation measures are formulated in light of the findings by the project engineers (for the different methods to be used during the construction phase). Mitigation measures are discussed for the construction and operational stage of the project. During the construction stage it is important to take measures to minimize impact on the environment due to the various construction methods. A construction method that has the least impact on terrestrial and/or marine environment has to be utilized. Detailed mitigation measures are discussed in Section 11 of the report. 1.3.3 Alternatives Considering the alternatives for the project in terms of location and type of economic activity to be carried out has been decided by the Ministry of Fisheries and Agriculture and the proponent, through lease of the island to the proponent for a specific purpose. Apart from the type of economic activity and location, other aspects for which alternatives have been considered in the report are: ➢ Construction method of jetty ➢ Location of M&E facilities building ➢ Feed water intake method Details of the various alternatives considered and the selected alternatives are shown in Section 10 of the report. Of these, the location of M&E facilities building is of significance, as the alternative location greatly minimizes the impact due to vegetation clearance, as it offers the opportunity to avoid clearance from the mangrove area. Thus, from an environmental aspect the consultant strongly feels the alternative location is the more feasible option and thus this option is selected. The no-project scenario is also considered, which would mean that all environmental impacts due to the project would no longer be an issue. Environmental impacts due to the proposed project are minor to moderate overall, while discontinuation of the project means a loss of income and revenue to the proponent and the national economy, as well as a loss of number of benefits for the Atoll community. Hence, it is concluded that continuation of the project with the implementation of the different mitigation measures to minimize environmental impacts is a feasible option.Item Environmental impact assessment for the construction and setup of a sewerage system in Landhoo Island, Noonu Atoll, Maldives(2017-11) Water SolutionsThis report discusses the findings of an environmental impact study undertaken by Water Solutions Pvt. Ltd in order to fulfill obligatory requirements of the National Environment Protection and Preservation Act, Law No. 4/93 for the proposed setup of the sewerage system (hereafter referred to as the project) in Landhoo island, Noonu Atoll, Maldives. The purpose of this EIA is to identify and minimize potential adverse environmental impacts related to this project and enhance the overall quality of the project. By examining the project location, the legal framework and the existing environmental components such as marine ecology and the socioeconomic aspects, this EIA provides useful information regarding the extent, nature and the magnitude of impacts that are likely to occur. The EIA will also help to identify the long term socio-economic benefits to the community after implementing this project. It also provides a framework for future monitoring of the environment, so that changes can be monitored and corrective measures can be undertaken. The proposed project aims to establish a sewerage collection and disposal system in the island of Landhoo in Noonu Atoll. The concept designed for Landhoo is a gravity type wastewater collection and disposal system. The existing systems are mainly based on septic tanks and small bore sewers. Without proper maintenance these systems are prone to damage and contamination of groundwater can occur. The contamination of the groundwater has occurred to the extent that it cannot be utilized for any potable use. Therefore, the current setup is not environmentally acceptable nor suitable. The sewerage system for Landhoo will be a gravity sewerage system where sloping pipelines will allow waste water from the entire island to flow to three zonal pumping stations. The sewage will be pumped from the pumping station to the treatment plant where it will be treated and discharged via a sea outfall pipeline into the sea. The sewerage system will comprise of elements of a given specification for sewer mains, cleanouts, manholes, vents, pump stations, outfall pipeline and diffuser that will ensure a 30 year design flow The sewerage system therefore comprises of the following components: a) Household inspection chambers. b) A gravity sewerage reticulation network. c) Reticulation pumping stations and pressure main system. d) Construction of a sea outfall to discharge the sewage into deep sea. The proposed project will ensure that the groundwater of the island does not get contaminated through improper sanitation systems. It will also ensure that the surrounding marine environment will improve in terms of environmental quality and will ensure pollution from sewage does not occur on the near shore environments. The project is expected to bring several positive impacts on the environmental quality of the island and the surrounding reef. Particularly, the most significant benefit would be achieved through improvement in the bacteriological quality of the groundwater. The health benefits of the project are worthy of noting as the improvement in water quality are going to bring significant health benefits to the community. Environmental & social impacts and the mitigation measures Several environmental impacts of this proposed project have been examined through a number of processes. These include consultations with the project development team, field surveys, observations and assessment, and field experience gained from similar development projects implemented throughout the country. Potential positive and negative impacts on the environment have been considered. The assessment indicates environmental impacts, both during the construction and operation stage. During the construction period, impacts are likely to occur on the marine and terrestrial environment (groundwater). Most of the impacts during the construction period are impacts related to construction waste, dewatering, disruptions to the local traffic, dust emission, damage to the reef during sea outfall construction and noise. During the operational stage of this project, there will be both positive and negative impacts. Positive impacts include the improvement of the ground water quality of the island. Negative impacts include the increased in extraction of groundwater for toilet flushing that may increase the chances of groundwater salinization at a much accelerated rate. This project does foresee some negative impacts even during the construction stage but is geared towards improving the overall environmental quality of the island, most notably the environmental health. The project is presently planned to lay the sewer pipeline along the center of the exiting road. During this process, dewatering and construction pose some challenges. Previous experience of sewer construction in the Maldives has indicated that excavation depths more than 3.5m are not recommended for conventional dewatering methods to avoid the risk of undermining and trench collapses as well as loss of structural integrity of the surrounding earth. For the purpose of the Landhoo design, the maximum depth of excavation will not exceed 3.5m as per the Design criteria and technical specifications for conventional gravity sewerage systems guideline released by the Water and Sanitation Unit of the Environmental Protection Agency (Environmental Protection Agency, 2015). Strict reference to these criteria will be followed and necessary as some streets are very narrow and congested, leaving limited space for mechanical excavation between buildings for the installation of pipelines. The lack of an approved land use plan for the island is also a draw back for Landhoo. The present design is based solely on the existing populated area in the island. There are large areas of the island undeveloped and unzoned due to lack of a proper land use plan. The island is a potential hot spot for future tourism development due to the vase natural resources (beach, mangroves and thick forests and plenty of land). Different types of developments such as guesthouses and restaurants may require grease traps to prevent large influxes of unwanted material into the sewerage network. Therefore the present design of the system has not considered these future developments and in the event of such developments, the existing system will require upgrading. Requirements may need to be specified at a policy level to counter this issue. Therefore this is a potential risk factor in this project. Despite these shortcomings the project does not pose serious threats to the natural environment (marine and terrestrial) and will directly benefit the environment and the community, both in the short and long term. Minor negative impacts with varying significance will occur as the project is implemented. They include dewatering and localized salinization, disruption to public transport, dust emissions during pipe laying work and reef damage during the process of outfall construction. The pump stations have not been placed around the periphery of the island, instead are located within the population zone. This could pose the issue of foul odour in the event of a system failure whereby the foul odour abatement mechanism is affected. Incorporating the pump stations in the populated areas is a necessity and this design factor will enhance the functioning of the overall system. The project will benefit the community and the island in the long term. It is important to ensure that the project implementation is carried in a sustainable manner and in such the sewerage system can be maintained in a cost effective manner as and when required. It is therefore in the opinion of the consultant that the project does not foresee significant negative environmental impacts and should be allowed. Although the project will benefit the community, the proposed design has a number of disadvantages. Construction of pump stations underground on the streets is seen as a design issue that could have operational difficulties. Instead, the pump stations could be located within the residential block boundary with a small plot of land allocated for the pump station. Selection of sites can be focused on places such as mosque, symmetry and from other public buildings or plots of land. With the present design, a number of operational difficulties are anticipated. Experience from similar systems setup elsewhere in the Maldives have been studied and reviewed for this project. The reviews and experiences from these systems are not in favor of the present design and this is something that needs to be considered before undertaking the project. Sanitation systems must be both environmentally and socially friendly and acceptable. As important as the design is the operation and maintenance. Operation and maintenance should be viewed as a key sustainable aspect of similar projects. No matter how good a design is, the sustainability and acceptability will depend on how good the system functions in the operational period. With the pump stations being located on the road itself, there are a number of such difficulties which are equally as important as the engineering design aspects.Item Environmental impact assessment for the construction and setup of a sewerage system in Feeali Island, Faafu Atoll, Maldives(2017-12) Water SolutionsThis report discusses the findings of an environmental impact study undertaken by Water Solutions Pvt. Ltd in order to fulfil obligatory requirements of the National Environment Protection and Preservation Act, Law No. 4/93 for the proposed setup of the sewerage system (hereafter referred to as the project) in Feeali island, Faafu Atoll, Maldives. The purpose of this EIA is to identify and minimize potential adverse environmental impacts related to this project and enhance the overall quality of the project. By examining the project location, the legal framework and the existing environmental components such as marine ecology and the socio-economic aspects, this EIA provides useful information regarding the extent, nature and the magnitude of impacts that are likely to occur. The EIA will also help to identify the long term socio-economic benefits to the community after implementing this project. It also provides a framework for future monitoring of the environment, so that changes can be monitored and corrective measures can be undertaken. The proposed project aims to establish a sewerage collection and disposal system in the island of Feeali in Faafu Atoll. The concept designed for Feeali is a gravity type wastewater collection and disposal system. The existing systems are mainly based on septic tanks and small bore sewers. Without proper maintenance these systems are prone to damage and contamination of groundwater can occur. The contamination of the groundwater has occurred to the extent that it cannot be utilized for any potable use. Therefore, the current setup is not environmentally acceptable nor suitable. The sewerage system for F. Feeali will be a gravity sewerage system where sloping pipelines will allow waste water from the entire island to flow to two zonal pumping stations. The sewage will be pumped from the pumping station to the treatment plant where it will be treated and discharged via a sea outfall pipeline into the sea. The sewerage system will comprise of elements of a given specification for sewer mains, cleanouts, manholes, vents, pump stations, outfall pipeline and diffuser that will ensure a 30 year design flow. The sewerage system therefore comprises of the following components: a) Household inspection chambers. b) A gravity sewerage reticulation network. c) Reticulation pumping stations and pressure main system. d) Construction of a sea outfall to discharge the sewage into deep sea. The proposed project will ensure that the groundwater of the island does not get contaminated through improper sanitation systems. It will also ensure that the surrounding marine environment will improve in terms of environmental quality and will ensure pollution from sewage does not occur on the near shore environments. The project is expected to bring several positive impacts on the environmental quality of the island and the surrounding reef. Particularly, the most significant benefit would be achieved through improvement in the bacteriological quality of the groundwater. The health benefits of the project are worthy of noting as the improvement in water quality are going to bring significant health benefits to the community. Environmental & social impacts and the mitigation measures Several environmental impacts of this proposed project have been examined through a number of processes. These include consultations with the project development team, field surveys, observations and assessment, and field experience gained from similar development projects implemented throughout the country. Potential positive and negative impacts on the environment have been considered. The assessment indicates environmental impacts, both during the construction and operation stage. During the construction period, impacts are likely to occur on the marine and terrestrial environment (groundwater). Most of the impacts during the construction period are impacts related to construction waste, dewatering, disruptions to the local traffic, dust emission, damage to the reef during sea outfall construction and noise. During the operational stage of this project, there will be both positive and negative impacts. Positive impacts include the improvement of the ground water quality of the island. Negative impacts include the increased in extraction of groundwater for toilet flushing that may increase the chances of groundwater salinization at a much accelerated rate. This project does foresee some negative impacts even during the construction stage but is geared towards improving the overall environmental quality of the island, most notably the environmental health. The project is presently planned to lay the sewer pipeline along the centre of the exiting road. During this process, dewatering and construction pose some challenges. Previous experience of sewer construction in the Maldives has indicated that excavation depths more than 3.5m are not recommended for conventional dewatering methods to avoid the risk of undermining and trench collapses as well as loss of structural integrity of the surrounding earth. For the purpose of the Feeali design, the maximum depth of excavation will not exceed 3.5m as per the Design criteria and technical specifications for conventional gravity sewerage systems guideline released by the Water and Sanitation Unit of the Environmental Protection Agency (Environmental Protection Agency, 2015). Strict reference to these criteria will be followed and necessary as the streets are very narrow and congested, leaving limited space for mechanical excavation between buildings for the installation of pipelines. Despite these shortcomings, the project does not pose serious threats to the natural environment (marine and terrestrial) and will directly benefit the environment and the community, both in the short and long term. Minor negative impacts with varying significance will occur as the project is implemented. They include dewatering and localized salinization, disruption to public transport, dust emissions during pipe laying work and reef damage during the process of outfall construction. The pump stations have not been placed around the periphery of the island, instead are located within the population zone. This could pose the issue of foul odour in the event of a system failure whereby the foul odour abatement mechanism is affected. Incorporating the pump stations in the populated areas is a necessity and this design factor will enhance the functioning of the overall system. The project will benefit the community and the island in the long term. It is important to ensure that the project implementation is carried in a sustainable manner and in such the sewerage system can be maintained in a cost effective manner as and when required. It is therefore in the opinion of the consultant that the project does not foresee significant negative environmental impacts and should be allowed. Although the project will benefit the community, the proposed design has a number of disadvantages. Construction of pump stations underground on the streets is seen as a design issue that could have operational difficulties. Instead, the pump stations could be located within the residential block boundary with a small plot of land allocated for the pump station. Selection of sites can be focused on places such as mosque, symmetry and from other public buildings or plots of land. With the present design, a number of operational difficulties are anticipated. Experience from similar systems setup elsewhere in the Maldives have been studied and reviewed for this project. The reviews and experiences from these systems are not infavour of the present design and this is something that needs to be considered before undertaking the project. Sanitation systems must be both environmentally and socially friendly and acceptable. As important as the design is the operation and maintenance. Operation and maintenance should be viewed as a key sustainable aspect of similar projects. No matter how good a design is, the sustainability and acceptability will depend on how good the system functions in the operational period. With the pump stations being located on the road itself, there are a number of such difficulties which are equally as important as the engineering design aspects.Item Environmental impact assessment for establishment of sewer network at F. Bilehdhoo, Sh. Feevah, G.Dh Madaveli & R. Innaamaadhoo(2017-12) Wahhab, Mahfooz A.; Awwal, Abdul; Saeed, Mafthooh; Nilaama, Mariyam1. The purpose of this EIA is to critically analyse and assess the potential environmental impacts associated with the establishment of a sewer network in F.Bilehdhoo, Sh.Feevah, GDh.Madaveli and R.Innamaadhoo and expose the solutions and preferred alternatives as well as mitigation measures to minimize any negative impacts whilst trying to derive the maximum positive impacts from the project; 2. Existing sewer situation at the aforementioned islands are not proper and are subject to cause ground water contamination. The frequent use of ground water for daily household needs may lead to health risks of individuals and may give chance to developing diseases caused by unsafe sanitary conditions in the community level 3. In addition to this, the existing localised sewer networks at neighbourhood level do not comply with the requirements of the EPA standards. Therefore, it is understood that the locals of these 4 islands are in dire need of a solution to the above-mentioned problems; 4. In this sewer establishment project, sewer facilities are proposed to be constructed at a location whereby public nuisance could be minimised along with little disturbance to the natural setting of the proposed locations of sewer facility and allied pump stations for the network. All the components of the sewer network will be constructed according to EPA specification complying to both MEE and EPA regulations; 5. A full baseline of air quality and water quality was established. It was found that the water samples of tested had certain parameters exceeding the EPA standard of safe drinking water. 6. Additionally, this study also involved identification of several alternative locations for laying the outfall and selecting the most ideal location based on thorough study of the tidal flow, seasonal changes, proximity to the public recreational beaches and ease of design effectiveness. The preferred locations were selected based on best met design criteria of EPA and environmental options; 7. The construction works of sewer network presented in this report are not expected to adversely impact the environment if the mitigation measures mentioned in the report are followed. The most important mitigation measures are daily maintenance of machinery, following chemical handling procedures, waste segregation and storage in closed labelled containers until disposal to Thilafushi or R. Vandhoo and most importantly following the EPA guidelines for operation of sewer system; 8. Potential groundwater contamination from damages to sewer network, potential impacts to marine life from dish charge of sewerage from the outfall and vegetation clearance are the most significant environmental impacts associated with the project. Therefore, it is extremely important to follow the operation and maintenance manual of the sewer system. Since some of the proposed locations are amidst densely vegetated areas on each island, vegetation clearance is inevitable; 9. Overall, the proposed project is expected to bring in positive outcomes. It is expected that the newly established sewer network will ensure safe sanitation services to the 4 islands in addition to greatly reducing further disturbance and contamination of the ground water and surrounding environment; and 10. Monitoring is essential to ensure that environmental thresholds are not exceeded and mitigation measures proposed are working. Water quality and air quality monitoring will be done according to the proposed monitoring schedule.Item Environmental impact assessment for the construction and setup of a sewerage system in Maakurathu Island, Raa Atoll, Maldives(2017-12) Water SolutionsThis report discusses the findings of an environmental impact study undertaken by Water Solutions Pvt. Ltd in order to fulfil obligatory requirements of the National Environment Protection and Preservation Act, Law No. 4/93 for the proposed setup of the sewerage system (hereafter referred to as the project) in Maakurathu island, Raa Atoll, Maldives. The purpose of this EIA is to identify and minimize potential adverse environmental impacts related to this project and enhance the overall quality of the project. By examining the project location, the legal framework and the existing environmental components such as marine ecology and the socio-economic aspects, this EIA provides useful information regarding the extent, nature and the magnitude of impacts that are likely to occur. The EIA will also help to identify the long term socio-economic benefits to the community after implementing this project. It also provides a framework for future monitoring of the environment, so that changes can be monitored and corrective measures can be undertaken. The proposed project aims to establish a sewerage collection and disposal system in the island of Maakurathu in Raa Atoll. The concept designed for Maakurathu is a gravity type wastewater collection and disposal system. The existing systems are mainly based on septic tanks and small bore sewers. Without proper maintenance these systems are prone to damage and contamination of groundwater can occur. The contamination of the groundwater has occurred to the extent that it cannot be utilized for any potable use. Therefore, the current setup is not environmentally acceptable nor suitable. The sewerage system for R. Maakurathu will be a gravity sewerage system where sloping pipelines will allow waste water from the entire island to flow to three zonal pumping stations. The sewage will be pumped from the pumping station to the treatment plant where it will be treated and discharged via a sea outfall pipeline into the sea. The sewerage system will comprise of elements of a given specification for sewer mains, cleanouts, manholes, vents, pump stations, outfall pipeline and diffuser that will ensure a 30 year design flow. The sewerage system therefore comprises of the following components: a) Household inspection chambers. b) A gravity sewerage reticulation network. c) Reticulation pumping stations and pressure main system. d) Construction of a sea outfall to discharge the sewage into deep sea. The proposed project will ensure that the groundwater of the island does not get contaminated through improper sanitation systems. It will also ensure that the surrounding marine environment will improve in terms of environmental quality and will ensure pollution from sewage does not occur on the near shore environments. The project is expected to bring several positive impacts on the environmental quality of the island and the surrounding reef. Particularly, the most significant benefit would be achieved through improvement in the bacteriological quality of the groundwater. The health benefits of the project are worthy of noting as the improvement in water quality are going to bring significant health benefits to the community. Several environmental impacts of this proposed project have been examined through a number of processes. These include consultations with the project development team, field surveys, observations and assessment, and field experience gained from similar development projects implemented throughout the country. Potential positive and negative impacts on the environment have been considered. The assessment indicates environmental impacts, both during the construction and operation stage. During the construction period, impacts are likely to occur on the marine and terrestrial environment (groundwater). Most of the impacts during the construction period are impacts related to construction waste, dewatering, disruptions to the local traffic, dust emission, damage to the reef during sea outfall construction and noise. During the operational stage of this project, there will be both positive and negative impacts. Positive impacts include the improvement of the ground water quality of the island. Negative impacts include the increased in extraction of groundwater for toilet flushing that may increase the chances of groundwater salinization at a much accelerated rate. This project does foresee some negative impacts even during the construction stage but is geared towards improving the overall environmental quality of the island, most notably the environmental health. The project is presently planned to lay the sewer pipeline along the centre of the exiting road. During this process, dewatering and construction pose some challenges. Previous experience of sewer construction in the Maldives has indicated that excavation depths more than 3.5m are not recommended for conventional dewatering methods to avoid the risk of undermining and trench collapses as well as loss of structural integrity of the surrounding earth. For the purpose of the Maakurathu design, the maximum depth of excavation will not exceed 3.5m as per the Design criteria and technical specifications for conventional gravity sewerage systems guideline released by the Water and Sanitation Unit of the Environmental Protection Agency (Environmental Protection Agency, 2015). Strict reference to these criteria will be followed and necessary as the streets are very narrow and congested, leaving limited space for mechanical excavation between buildings for the installation of pipelines. Despite these shortcomings, the project does not pose serious threats to the natural environment (marine and terrestrial) and will directly benefit the environment and the community, both in the short and long term. Minor negative impacts with varying significance will occur as the project is implemented. They include dewatering and localized salinization, disruption to public transport, dust emissions during pipe laying work and reef damage during the process of outfall construction. The pump stations have not been placed around the periphery of the island, instead are located within the population zone. This could pose the issue of foul odour in the event of a system failure whereby the foul odour abatement mechanism is affected. Incorporating the pump stations in the populated areas is a necessity and this design factor will enhance the functioning of the overall system. The project will benefit the community and the island in the long term. It is important to ensure that the project implementation is carried in a sustainable manner and in such the sewerage system can be maintained in a cost effective manner as and when required. It is therefore in the opinion of the consultant that the project does not foresee significant negative environmental impacts and should be allowed. Although the project will benefit the community, the proposed design has a number of disadvantages. Construction of pump stations underground on the streets is seen as a design issue that could have operational difficulties. Instead, the pump stations could be located within the residential block boundary with a small plot of land allocated for the pump station. Selection of sites can be focused on places such as mosque, symmetry and from other public buildings or plots of land. With the present design, a number of operational difficulties are anticipated. Experience from similar systems setup elsewhere in the Maldives have been studied and reviewed for this project. The reviews and experiences from these systems are not infavour of the present design and this is something that needs to be considered before undertaking the project. Sanitation systems must be both environmentally and socially friendly and acceptable. As important as the design is the operation and maintenance. Operation and maintenance should be viewed as a key sustainable aspect of similar projects. No matter how good a design is, the sustainability and acceptability will depend on how good the system functions in the operational period. With the pump stations being located on the road itself, there are a number of such difficulties which are equally as important as the engineering design aspects.Item Environmental impact assessment for the construction and setup of a sewerage system in Rasmaadhoo Island, Raa Atoll, Maldives(2017-12) Water SolutionsThis report discusses the findings of an environmental impact study undertaken by Water Solutions Pvt. Ltd in order to fulfil obligatory requirements of the National Environment Protection and Preservation Act, Law No. 4/93 for the proposed setup of the sewerage system (hereafter referred to as the project) in Rasmaadhoo island, Raa Atoll, Maldives. The purpose of this EIA is to identify and minimize potential adverse environmental impacts related to this project and enhance the overall quality of the project. By examining the project location, the legal framework and the existing environmental components such as marine ecology and the socio-economic aspects, this EIA provides useful information regarding the extent, nature and the magnitude of impacts that are likely to occur. The EIA will also help to identify the long term socio-economic benefits to the community after implementing this project. It also provides a framework for future monitoring of the environment, so that changes can be monitored and corrective measures can be undertaken. The proposed project aims to establish a sewerage collection and disposal system in the island of Rasmaadhoo in Raa Atoll. The concept designed for Rasmaadhoo is a gravity type wastewater collection and disposal system. The existing systems are mainly based on septic tanks and small bore sewers. Without proper maintenance these systems are prone to damage and contamination of groundwater can occur. The contamination of the groundwater has occurred to the extent that it cannot be utilized for any potable use. Therefore, the current setup is not environmentally acceptable nor suitable. The sewerage system for R. Rasmaadhoo will be a gravity sewerage system where sloping pipelines will allow waste water from the entire island to flow to two zonal pumping stations. The sewage will be pumped from the pumping station to the treatment plant where it will be treated and discharged via a sea outfall pipeline into the sea. The sewerage system will comprise of elements of a given specification for sewer mains, cleanouts, manholes, vents, pump stations, outfall pipeline and diffuser that will ensure a 30 year design flow. The sewerage system therefore comprises of the following components: a) Household inspection chambers. b) A gravity sewerage reticulation network. c) Reticulation pumping stations and pressure main system. d) Construction of a sea outfall to discharge the sewage into deep sea. The proposed project will ensure that the groundwater of the island does not get contaminated through improper sanitation systems. It will also ensure that the surrounding marine environment will improve in terms of environmental quality and will ensure pollution from sewage does not occur on the near shore environments. The project is expected to bring several positive impacts on the environmental quality of the island and the surrounding reef. Particularly, the most significant benefit would be achieved through improvement in the bacteriological quality of the groundwater. The health benefits of the project are worthy of noting as the improvement in water quality are going to bring significant health benefits to the community. Several environmental impacts of this proposed project have been examined through a number of processes. These include consultations with the project development team, field surveys, observations and assessment, and field experience gained from similar development projects implemented throughout the country. Potential positive and negative impacts on the environment have been considered. The assessment indicates environmental impacts, both during the construction and operation stage. During the construction period, impacts are likely to occur on the marine and terrestrial environment (groundwater). Most of the impacts during the construction period are impacts related to construction waste, dewatering, disruptions to the local traffic, dust emission, damage to the reef during sea outfall construction and noise. During the operational stage of this project, there will be both positive and negative impacts. Positive impacts include the improvement of the ground water quality of the island. Negative impacts include the increased in extraction of groundwater for toilet flushing that may increase the chances of groundwater salinization at a much accelerated rate. This project does foresee some negative impacts even during the construction stage but is geared towards improving the overall environmental quality of the island, most notably the environmental health. The project is presently planned to lay the sewer pipeline along the centre of the exiting road. During this process, dewatering and construction pose some challenges. Previous experience of sewer construction in the Maldives has indicated that excavation depths more than 3.5m are not recommended for conventional dewatering methods to avoid the risk of undermining and trench collapses as well as loss of structural integrity of the surrounding earth. For the purpose of the Rasmaadhoo design, the maximum depth of excavation will not exceed 3.5m as per the Design criteria and technical specifications for conventional gravity sewerage systems guideline released by the Water and Sanitation Unit of the Environmental Protection Agency (Environmental Protection Agency, 2015). Strict reference to these criteria will be followed and necessary as the streets are very narrow and congested, leaving limited space for mechanical excavation between buildings for the installation of pipelines. Despite these shortcomings, the project does not pose serious threats to the natural environment (marine and terrestrial) and will directly benefit the environment and the community, both in the short and long term. Minor negative impacts with varying significance will occur as the project is implemented. They include dewatering and localized salinization, disruption to public transport, dust emissions during pipe laying work and reef damage during the process of outfall construction. The pump stations have not been placed around the periphery of the island, instead are located within the population zone. This could pose the issue of foul odour in the event of a system failure whereby the foul odour abatement mechanism is affected. Incorporating the pump stations in the populated areas is a necessity and this design factor will enhance the functioning of the overall system. The project will benefit the community and the island in the long term. It is important to ensure that the project implementation is carried in a sustainable manner and in such the sewerage system can be maintained in a cost effective manner as and when required. It is therefore in the opinion of the consultant that the project does not foresee significant negative environmental impacts and should be allowed. Although the project will benefit the community, the proposed design has a number of disadvantages. Construction of pump stations underground on the streets is seen as a design issue that could have operational difficulties. Instead, the pump stations could be located within the residential block boundary with a small plot of land allocated for the pump station. Selection of sites can be focused on places such as mosque, cemetery and from other public buildings or plots of land. After consultation, Raa atoll council allocated such empty plots for the 2 pump stations. However this brings about a minor change in the network design. With the proposed design, a number of operational difficulties are anticipated. Experience from similar systems setup elsewhere in the Maldives have been studied and reviewed for this project. The reviews and experiences from these systems are not infavour of the present design and this is something that needs to be considered before undertaking the project. Sanitation systems must be both environmentally and socially friendly and acceptable. As important as the design is the operation and maintenance. Operation and maintenance should be viewed as a key sustainable aspect of similar projects. No matter how good a design is, the sustainability and acceptability will depend on how good the system functions in the operational period. With the pump stations being located on the road itself, there are a number of such difficulties which are equally as important as the engineering design aspects.