Integrating GIS and AHP for Optimal Landfill Site Selection: A Case Study of Alwar City, India

preprint OA: closed
Full text JSON View at publisher
Full text 142,406 characters · extracted from preprint-html · click to expand
Integrating GIS and AHP for Optimal Landfill Site Selection: A Case Study of Alwar City, India | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Integrating GIS and AHP for Optimal Landfill Site Selection: A Case Study of Alwar City, India Mintu Saini, Dr. Salahuddin Mohd. This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6424995/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Municipal solid waste management (MSWM) is becoming a significant concern both globally and locally. Landfill sites selection is a critical component of MSWM. In various urban areas in India, including Alwar City, the current dump-sites were selected based on land availability rather than land suitability. This study employed Geographic Information Systems (GIS) and multi-criteria decision analysis (MCDA) using the Analytical Hierarchy Process (AHP) to classify the city into zones categorized as most suitable, suitable, moderately suitable, less suitable, and not suitable for landfill site. The findings revealed that 33,915 hectares, constituting 88.92% area, were classified unsuitable, while 3,962 hectares, representing 20.37%, were classified overall suitable. Only 1,257 hectares, representing 3.2% of the total area, were the most suitable for landfill sites. Total 121 potential sites were identified however, only 10 met the minimum size criterion of 20 hectares and aligned with the Alwar City Master Plan 2051. The study also revealed that the existing landfill is located in an area that fall in moderately suitable category. This study also contributes to the existing literature of how to choose landfill sites that are both scientifically and socially acceptable in developing nations. This study focuses on combining MCDA, AHP, and GIS techniques to improve the environmental and socio-economic sustainability of landfill site selection and management, thereby supporting the attainment of Sustainable Development Goals (SDGs) 3, 6, and 11. Municipal Solid Waste Management Landfill Sites Suitability Geographical Information System Multi-Criteria Decision Analysis Analytical Hierarchy Process Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Introduction Municipal solid waste (MSW) generation is becoming a global environmental concern with significant implications for public health, environmental degradation, and climate change [1]. The World Bank report "Waste 2.0" highlights that the generation of municipal solids is predicted to grow from 2.1 billion tonnes per annum in 2023 to 3.8 billion tonnes by 2050 [2]. In India, the country generates around 160,038.9 tonnes per day (TPD) of solid waste, of which approximately 152,749.5 TPD was collected, reflecting a collection efficiency of 95.4% [3]. Of the collected waste, 79,956.3 TPD (50%) was treated, while 29,427.2 TPD (18.4%) was sent to landfills [3]. However, 50,655.4 TPD, or 31.7% of the total waste generated, remains unaccounted for [3]. This enormous amount of MSW generation is influenced by various factors such as GDP growth, rapid urbanization, population growth, tourist flow, and industrial expansion [4–6]. This enormous increase in the generation of municipal solid waste poses serious challenges for waste management systems, especially in developing countries worldwide [7]. Thus, to overcome the challenges posed by MSW, the need to adhere to the principle of integrated solid waste management (ISWM). Integrated solid waste management (ISWM) is a comprehensive waste management process that aims to optimize waste management by focusing on both physical components (collection, disposal, and recycling) and governance aspects (inclusivity, financial sustainability, and sound institutions) [8]. The United States Environmental Protection Agency (EPA) has delineated the main elements of the ISWM as (1) source reduction, (2) recycling and composting, (3) combustion (waste-to-energy facilities), and (4) landfills. The ISWM shows that the waste management hierarchy starts by reducing waste from the source to collection, recycling, segregation, treatment, and the end of the landfill. The landfill comes at the end of the final stage, and the least attention has been paid to it [9]. Improper landfill siting can have significant environmental impacts, such as air, water, and soil pollution, as well as harm-sensitive ecosystems [10]. Socially, it can lead to public opposition, conflicts within communities, and the community's well-being and economic conditions [11,12]. The multitude of challenges MSW poses and the identification and allocation of appropriate sites for waste disposal have become crucial for managing municipal solid waste (MSW) [9]. The main objective of finding an optimal site for waste disposal is to mitigate the adverse effects of MSW on the environment, ecology, and economy [13]. The selection of a landfill site is a complex, multi-criteria process that requires careful assessment and evaluation of various factors to minimize environmental and public health risks and optimize available resources [14]. Thus, conducting an in-depth evaluation and making informed decisions regarding landfill site selection is critical for achieving sustainable and environmentally responsible solid waste management. Various studies have found that integrating various disciplines, such as environmental science, hydrogeology, sociology, economics, and engineering, can help determine optimal landfill sites. Kontos and Komin in [15] incorporated socioeconomic and environmental variables to determine an appropriate landfill site for solid waste disposal. While Kharat and others in [16] identified sensitive areas and intra-municipal factors as the top two significant influences. While Sumathi in [17] has incorporated geological, environmental, and socioeconomic factors, and Djokanovic and others in [14] found geological engineering criteria to be the most important, followed by hydrogeological and hydrological criteria. However, the traditional method of landfill site selection is insufficient because of the complex and multi-criteria evaluation processes involved. It requires knowledge of many criteria, parameters, regulations, and simultaneous evaluations [14,18]. However, advancements in geospatial technologies, such as Geographic Information Systems (GIS) and remote sensing, have helped significantly address challenges in solid waste management [19]. However, applying GIS and remote sensing techniques can pose difficulties in harmonizing expert knowledge with public perceptions [20]. Thus, owing to the complexity of decision-making for landfill site selection, Multi-criteria Decision Analysis (MCDA) is a valuable methodological approach [9,21]. This approach facilitates decision-making by turning a problem into smaller, manageable components and allowing for a systematic evaluation of each criterion before integrating them into a broad framework for overall analysis [22,23]. Various MCDA methods, such as the Analytic Hierarchy Process (AHP), TOPSIS, and PROMETHEE, are now commonly used with GIS for site selection [24] These methods allow the consideration of multiple criteria, including spatial and non-spatial factors, while simultaneously providing sound data analysis at the spatial level [22]. Various studies on the integration of GIS and MCDA for landfill site selection have been conducted in Iraq [25,26], Iran [16,27,28], Norway [29], Serbia [14], Southern Sierra Leone [9], Macedonia [30]; Guwahati, India [31]; Roorkee, India [32], Azarbaijan [33], India [34], Thailand [35], Turkey [18,36], and Zambia [23]. Most studies are outside India, mainly in the Middle East or Europe. Only a few studies have been conducted in India, such as Guwahati and Roorkee. According to the Ministry of Urban Government of India, in India, where more than 60 cities are million plus, 40 percent of its urban population resides in tier 2 and tier 3 cities [37]. However, there is limited application of GIS and MCDA for landfill site selection, specifically in the state of Rajasthan, and none of the cities has integrated GIS and MCDA in landfill site selection, rather than based on convenience for city administration. In the last two decades, the problem of solid waste management in Indian cities has become complex, similar to that in fast-growing industrial cities [38]. The rise in municipal solid waste in Alwar City can be attributed to factors such as a 22.7% surge in population in the last decade, swift industrialization, migration into urban areas, inadequate urban planning, and insufficient capital investment in this sector. This research is driven by the urgent requirement to assess the appropriateness of a landfill location through the established scientific approaches of integrating MCDA and GIS in Alwar City and to provide evidence-based insight for sustainable landfill site management. The city has an existing landfill site operated by the Alwar Municipal Corporation. However, this dumping site's selection is mainly based on land availability and administrative convenience and not on scientific parameters regarding environmental, social, and infrastructural aspects. The National Green Tribunal report regarding Haider Ali versus the Commissioner of Nagar Nigam, Alwar, and others emphasizes issues such as open dumping, inadequate operation of processing plants, unpleasant odours near highways, and a significant risk of groundwater pollution. Based on the literature review, it is evident that most studies have combined GIS and MCDA, and other techniques have been conducted outside India. In India, there is limited literature on the application of GIS for solid waste management. Regarding the state of Rajasthan, where Alwar City is situated, literature exists only for the status of waste collection and types of waste. Thus, the primary aim of this study was to develop a landfill suitability map for Alwar City based on its 2051 master plan boundary. The uniqueness of this research stems from the combination of geospatial technology and MCDA to tackle the issue of identifying suitable landfill sites. This challenge has been largely overlooked in Indian cities. This study integrates environmental factors, such as forest area, to take ecological consideration of the Aravalli range, groundwater, etc. Socioeconomic factors include roads and residential areas. This research holds considerable significance, as it adds to the existing knowledge on selecting landfill sites that are scientifically sound, socially acceptable, and economically feasible in a densely populated and agrarian nation such as India. It will address waste management challenges, such as air, water, soil pollution, and public health, aligning with the principle of sustainable development goals 6 and target 6.3 by 2030 [39]. Description of study area Alwar, a city steeped in rich historical significance, is situated in the northern Indian state of Rajasthan (Figure 1) at a latitude of 27.5530° N and longitude of 76.6346° E, with an average elevation of approximately 268 m (879 feet) above sea level [40]. Nestled within the Aravalli Range in northeastern Rajasthan, the Alwar is characterized by rugged terrain surrounded by hills and forests. The region experiences a semi-arid climate, which is classified under the Köppen climate classification system as Cwg. The monsoon season, which begins in late June and continues until September, brings moderate to heavy rainfall, averaging approximately 600 mm annually [40]. According to the 2011 Census, Alwar City has a population of approximately 341,422 residents [41]. As the city expanded, new areas emerged, featuring broader roads, modern residential complexes, and commercial spaces. This rapid urbanization has resulted in mixed land-use patterns, where residential, commercial, and industrial activities often coexist [42]. Furthermore, Alwar's proximity to Delhi and Jaipur has played a significant role in its growth as part of the National Capital Region (NCR), shaping its economic and spatial development trajectory. Material and Methods Data Collection This study contains ten distinct input map layers: elevation, slope, residential area, roads (highways), aquifers, rivers, land use and land cover, forest area, soil texture, and water body (Table 1). The constraint criteria are identified based on the existing rules of the CPCB, RSPCB, and Municipal Solid Waste Management Rule 2016 and from academic experts of relevant disciplines to safeguard the environment, public health, and other aesthetic aspects. The constraint criteria are a water body and a 500m area around it, a river and a 500m area around it, a residential area and zone of 400m and a dense and moderately protected forest area. Factors such as water bodies, rivers, residential areas, and forests are both factor criteria, and constraint criteria are double criteria. Data for LULC and Water Body layer sourced as Sentinel 2A Imagery for 2023 with 10m resolution obtained from the European Space Agency, roads data from Open Street maps plate form, other data such as river, aquifer, soil, sourced from India WRIS Portal Government of India, while Digital Elevation data sourced from SRTM 30M resolution, USGS Earth Explorer. All map layers were created using ArcGIS software, with statistical analysis of MCDA AHP conducted through Microsoft Excel 2021. Each map layer adheres to a unified reference system consistent with national mapping standards, specifically WGS 84 and UTM 43N. A raster data model was selected, and every input map layer, whether initially in raster or vector format, was either resampled or converted to a raster with a consistent grid size of 30 meters. The layers, buffer zones, and rankings are below (Table 1). Table 1. Summery of input data used in this study Layer name Source map Buffer zones(m) Ranking Residential Area Sentinel 2A 2023 imagery. Supervised classification of LULC. 0-200 1 200-400 1 400-800 3 800-1200 4 >1200 5 Distance from Roads open street map portal 0-200 1 200-400 2 400-800 3 800-1200 5 >1200 4 Distance from River Hydrological data India WRIS 0-200 1 200-400 2 400-800 3 800-1200 4 >1200 5 Groundwater Aquifer India WRIS, GSI vector data Gneiss and Quartzite 5 limestone 1 marble 2 schist 3 older alluvium 4 Soil Texture India WRIS portal Spatial data (rater file) fine texture 3 coarse texture 2 rocky and non-soil 4 Forest Area Forest Survey of India raster data water body 1 dense forest 2 moderate dense 3 open/scrub vegetation 4 non forest 5 LULC Sentinel 2A 2023 imagery. Supervised classification of LULC. water 1 built-up 2 agriculture 3 vegetation 4 barren land 5 Slope (in Degree) USGS Earth Explorer, SRTM 30M 0-12 5 12-25 4 25-38 2 38-51 1 51-63 1 Elevation USGS Earth Explorer, SRTM 30M 229-272 1 272-322 2 322-401 3 401-489 4 489-602 5 Water Body LULC Classification 0-500 1 >500 5 Methods Setting of factor criteria The criteria are broadly categorized into environmental factors (river, soil, forest, aquifers, water body elevation and slope) and socio-economic factors (roads, residential area, land use, and land cover). All factor criteria are ranked from 1 to 5: one is not suitable, two is less suitable, three is moderately suitable, four is suitable, and five is most suitable (Table 1). River and Streams. A safe distance from water bodies like rivers, ponds, etc., is crucial because landfills generate leachate and unpleasant gaseous emissions that can contaminate groundwater [43]. This study's river and stream criteria are 1200 m most suitable. Land Use and Land Cover (LULC). Land use and land cover (LULC) are crucial considerations when selecting locations for landfill sites to mitigate environmental harm [30]. The 2023 Sentinel 2A Satellite Imagery underwent a supervised classification process with ArcGIS software, employing the maximum likelihood parametric decision rule (Saini et al., 2024). This classification relied on a predetermined LULC classification scheme from ESRI and a field survey of the study area. The framework encompassed six categories: water bodies, vegetation, built-up areas, agriculture, wasteland, and bare land. The relative suitability of different land use classes is shown in Table (1). Roads. The ease of access and year-round usability of the road are crucial factors for landfill site suitability. It is essential to position a landfill at a reasonable distance from both primary and secondary roads [15]. Based on various literature, this study uses different buffer distances: 1200 m less suitable. Residential Area . The safe distance between the residential area and the landfill site is one of the several factors that need to be taken into account, as the optimum distance will keep the transport cost of waste to the dumping site low and reduce the adverse effect of the landfill site at the same time [26,33]. Based on these considerations, the buffer distance from the residential area is as follows: 1200 m is most suitable. Elevation. Elevation is vital in landfill site selection, influencing drainage, accessibility, and potential environmental impacts [44].The role of elevation varies according to local conditions; the study area is situated in the hill area of Aravalli; thus, elevation is relevant in this study. The elevation in this region varies from 229 to 602 meters. To safeguard the environment and biodiversity and to avoid mountainous regions, elevations between 229 and 272 m are most suitable, 272 to 322 m are suitable, 322 to 401 m are moderately suitable, 401 to 489 m are less suitable, and elevations above 489 meters as not suitable. Slope. The slope is an important factor in minimizing landscaping costs and leachate leakage; gentle slopes are most suitable for landfills [22]. A steeper slope is unsuitable due to the higher cost of construction and maintenance of landfill sites [25]. In the study area, slope values range from 2◦ to 63◦, slopes between 0◦ and 12◦ are considered most suitable, 12◦ to 25◦ are suitable, 25◦ to 38◦ are moderately suitable, and those greater than 38◦ are not suitable. Aquifer. Aquifers are the critical factors in landfill site selection due to the potential risk of groundwater contamination [16,45]. The aquifer in the study area has five types; based on existing literature, the relative suitability is assigned as Gneiss and Quartzite are most suitable, limestone is considered unsuitable, marble is suitable, schist is moderately suitable, and older alluvium is less suitable. Soil. Soil texture, defined by the proportions of clay, sand, and silt particles, is key in determining landfill site suitability, as clayey soils are generally preferred for landfills due to their low permeability, which helps prevent leachate from contaminating groundwater [46,47]. Three distinct soil types were identified in the study area: fine-textured soil, deemed moderately important; coarse-textured soil, considered less suitable; and rocky or nonsoil types, regarded as suitable. Forest. Forests are sensitive and ecologically fragile areas important for selecting landfill sites. Forested areas should considered less suitable for landfill site selection [16]. The study area is situated on the outskirts of the Aravalli Mountain range, where various types of forests and vegetation are present. For landfill suitability, the non-forest areas are most suitable, open or scrub forest areas are considered suitable, moderately dense forests are seen as moderately suitable, and dense forest areas are unsuitable. Water Body. Protecting water resources is a primary concern in landfill site selection. Maintaining adequate distance from surface water bodies is crucial to prevent contamination [48]. The proximity to water bodies is an important constraint, as landfills located too close can lead to water pollution and contamination [48,49]. In this study, a safe distance of 500 m is considered unsuitable, but beyond that, it is considered suitable. Multi-Criteria Decision Analysis Multi-criteria decision analysis (MCDA) is a systematic method used to assess and prioritize options based on several, often competing, criteria. This method is becoming popular in various domains, such as environmental impact evaluation, healthcare decision-making, and conservation management [10,50]. Various MCDA techniques are employed for decision-making tasks, such as determining the suitability of landfill sites. This research utilizes the Analytical Hierarchy Process (AHP) and Weighted Linear Combination (WLC) methods of MCDA. Microsoft Excel 2021 is utilized to create the pairwise comparison matrix. Analytic Hierarchy Process. AHP was developed by Satty in 1980 and is based on pairwise comparison to determine the relative importance of the criteria [51]. It facilitates the prioritization of criteria and supports complex decision-making by deconstructing criteria into hierarchical structures with quantitative and qualitative elements [52]. This method successfully selects wastewater treatment processes [53]. In this study, focus group discussion was conducted with expert professors from various disciplines such as geology, geography, hydrology civ, civil engineering and experts in public administration to assign the relative importance of Satty’s nine-point scale [23]. The relative importance of ten criteria, as in Table (2), is assigned in a pairwise comparison matrix. This method involves comparing alternatives or criteria in pairs to determine their relative importance or preference [54–56]. According to Saaty and Vargas in [57], the consistency ratio (CR) for pairwise comparisons should be below 10%. The Consistency Index (CI) was calculated using the following formula: In this context, whereas n denotes the total number of criteria, λmax is the largest eigenvalue of the judgment matrix. A lower Consistency Index (CI) indicates greater consistency in the pairwise comparison matrix. The Consistency Ratio (CR) is determined by dividing the CI by the Random Consistency Index (RI) for the given value of n, as illustrated in Table 3. Table 2. Random Index Value Order Matrix (n) 1 2 3 4 5 6 7 8 9 10 Random Index (RI) 0.00 0.00 0.58 0.90 1.12 1.24 1.32 1.41 1.45 1.51 Source: Satty(1980) WEIGHTED LINEAR COMBINATION (WLC). This method is the most commonly used decision-making technique in GIS for creating composite. It allows the integration of various factors, with specific weight based on their relative importance, to derive a final suitability or vulnerability map [23,58,59]. In this study, the result from AHP was combined with WLC to get the final suitability map (Mvula et al., 2023). WLC is used to aggregate criteria weights and develop the suitability index value of potential area using the formula: In this context, Si denotes the suitability index for area i, and wi denotes the criterion's weight. Xij is the value of the criterion, with n being the total number of criteria and Cj indicating the constraint score, which can be either 0 or 1 [30,43]. All ten map layers were standardized using ArcGIS, where each layer was "reclassified" through the spatial analyst tool. Each class was assigned a rank from 1 to 5, with one indicating not suitable, two less suitable, three moderately suitable, four suitable, and five most suitable. Result and Discussion Suitability condition of criteria The total area for landfill suitability is ranked 1 to 5, where 1 indicates the least suitability and 5 represents the highest suitability, with 2, 3, and 4 denoting less suitable, moderately suitable, and suitable, respectively. Figures 2 and 3 illustrate the spatial distribution of suitability classifications based on factor criteria. The factors criteria, such as rivers and streams, show that around 98% of the area falls under the most suitable category because the study area lacks perennial streams. Similarly, a water body 2% area is classified as not suitable as a constraint area around 500m of a water body to prevent leachate leakage and contamination of the water body [11]. This data also explains that the study area is in arid condition, has no primary water source, and largely depends on groundwater for water supply. Meanwhile, aquifer factor criteria are around 9% under the most suitable category, and 81% are classified as suitable. Similarly, 66% classified the most suitable and 10% as suitable under the road (highways) criteria. While residential areas are a significant constraint for landfill suitability, 73% are classified as not suitable, 9% as suitable, and 11% as most suitable due to rapid urbanization and infrastructure development in the study area. In land use and land cover factor criteria, 1% of the area is most suitable as barren land and sparsely vegetated, while 53% of the area is moderately suitable due to agricultural land; this is the fact that the study area is primarily agriculture dependent. Regarding slope and elevation criteria, 64% were classified as most suitable and 19% as suitable because the western part of the study area is covered under the mountain range of the Aravalli mountains. Similarly, of the Forest areas that occupy the western and northern part of the study area, 20% are classified as unsuitable and the rest, 80%, as suitable. Table 3. Pairwise Comparision matrix RA RO RI AQ ST FA LU S E WB EVW Percentage Weight RA 1 3 1 4 7 1 5 5 7 1 0.189 18.9% RO 1/3 1 1/3 1 5 1 2 3 5 1/3 0.089 8.9% RI 1 3 1 3 5 1/3 3 5 5 1 0.155 15.5% AQ 1/4 1 1/3 1 3 1/3 1 3 5 1/5 0.066 6.6% ST 1/7 1/5 1/5 1/3 1 1/5 1/3 1/3 1 1/7 0.022 2.2% FA 1 1 3 3 5 1 1 3 5 1/3 0.142 14.2% LU 1/5 1/2 1/3 1 3 1 1 2 3 1/5 0.061 6.1% S 1/5 1/3 1/5 1/3 3 1/3 1/2 1 2 1/5 0.038 3.8% E 1/7 1/5 1/5 1/5 1 1/5 1/3 1/2 1 1/7 0.022 2.2% WB 1 3 1 5 7 3 5 5 7 1 0.218 21.8% Total 5.27 13.23 7.60 18.87 40.00 8.40 19.17 27.83 41.00 4.55 1.00 100.00 RA=Residential Area, RO=Road, RI=River, AQ=Aquifer, ST=Soil Texture, FA= Forest Area, LU=LULC, S=Slope, EL=Elevation, WB=Water Body, EVW=Eigen Vector Weight Lambda = 10.764, CI= 0.0849, CR= 0.056 or 5.6% Constraint map The constraint map, as shown in Figure 4, is generated from criteria that are identified based on existing rules of CPCB, RSPCB, and Municipal Solid Waste Management Rule 2016, as well as from academic experts of relevant discipline to safeguard the environment, public health and other aesthetics aspect. The constraint factors are a water body and a 500m area around it, a river and a 500m area around it, a residential area and zone of 400m and a dense and moderately protected forest area. After combining all constraint areas, the result is that around 89% of the area is not suitable for landfill site suitability, and only 11% of the area is suitable. This study reveals that the west and north parts of the city are covered with hills and forest areas, and the north and the eastern parts are primarily residential and built-up areas that are mostly restricted to landfills. This research focused on safeguarding, restoring, and promoting the sustainable utilization of land ecosystems by effectively managing forests and stopping and reversing land degradation. Once the study's findings are implemented, they will support the advancement of sustainable cities and communities (SDG 11) [39]. By ensuring that urban areas and human communities are secure, adaptable, and sustainable, we can ultimately achieve the objective of SDG 3, which focuses on enhancing health and well-being through the prevention and treatment of infectious diseases and pandemics [39]. Landfill suitability The final landfill suitability map was created using Eq. (3), incorporating the MCDA and AHP pairwise comparison matrix results from Table 3. The findings indicate that less than 8% of the area is suitable for landfill, while 89% is designated as restricted, and 3% is deemed moderately suitable. The final landfill suitability map was created using Eq. (3), incorporating the MCDA and AHP pairwise comparison matrix results from Table 3. The findings indicate that less than 8% of the area is suitable for landfill, while 89% is designated as restricted, and 3% is deemed moderately suitable. According to the city's master plan for 2051, most plans are in the north and eastern parts, and establishing an education zone is in the city's southwest. At the same time, the city is currently generating around 160 tons of waste per day, while the population growth of the city is 2.1- 2.2% annually, taking into account a minimum of 20 hectares of land required, while the most suitable would be above 50 hectares in area, taking future needs into account. While superimposing the required criteria, 10 suitable sites are identified, i.e., S1, S2, S3, S4, S5, S6, S7, S8, S9, and S10, as shown in Figure 5; these sites meet the minimum criteria, site S1 to S7 are most suitable as the area is above 50 hectares, while S3 is near existing landfill site located in 15 hectares of land area. The existing landfill site was selected a decade ago, and the region has now transformed into an industrial hub and is densely populated. Thus, this study not only promotes clean and sustainable waste disposal sites but also takes future considerations for waste disposal. Conclusion and Recommendation The landfill site suitability map for Alwar City Municipal Corporation is produced using the Geographic Information System (GIS), Multi-Criteria Decision Analysis (MCDA) and Analytical Hierarchy Process (AHP). GIS, MCDA and AHP considered environmental factors (river, soil, forest, aquifers, water body elevation and slope) and socio-economic factors (roads, residential area, land use, and land cover) for finding the most suitable landfill sites. The most suitable sites are located in the eastern and south-eastern parts of the study area, such as S2, S3, S4, S5, S7, etc., and out of the most suitable for the years 2051, S2, S3, S4, and S5. The two sites can be considered from the eastern parts S3 and S5 and the eastern parts S2 and S4 to reduce transportation costs. This research demonstrates the practicality of integrating a multi-disciplinary approach with scientific methods. This integration results in minimal environmental, economic, and public health concerns, a critical issue in developing nations like India. The study approach also aligns with the core objectives of Sustainable Development Goals 11 and 6. It highlights the importance of protecting our environment and public health to achieve sustainable cities and communities, as well as clean water and sanitation. This study is significant as it enhances the current understanding of selecting appropriate landfill sites in developing countries. Landfill sites should be scientifically selected and accepted by the community. We recommend that local governments enhance their capabilities and infrastructure facilities and integrate GIS and MCDA methods for waste management. This approach helps in more environmentally sustainable, economically viable and socially acceptable landfill selection and utilization. Declarations Declaration of competing interests The authors declare that they have no financial interests or personal connections that might have influenced the findings presented in this paper. Acknowledgements The authors express their gratitude to the Alwar Municipal Corporation for supplying all essential information. They extend special appreciation to Dr. Shweta Khandelwal and Dr. C.P. Morya for their unwavering guidance and encouragement throughout this research. Funding The authors declare that no funds, grants, or other support was received during the preparation of this manuscript. References Joshi R, Ahmed S. Status and challenges of municipal solid waste management in India: A review. Cogent Environ Sci 2016;2:1139434. https://doi.org/10.1080/23311843.2016.1139434. Beede DN, Bloom DE. THE ECONOMICS OF MUNICIPAL SOLID WASTE. World Bank Res Obs 1995;10:113–50. https://doi.org/10.1093/wbro/10.2.113. CPCB Annual Report. New Delhi: Central Pollution Control Board; 2022. Srivastava V, Ismail SA, Singh P, Singh RP. Urban solid waste management in the developing world with emphasis on India: challenges and opportunities. Rev Environ Sci Biotechnol 2015;14:317–37. https://doi.org/10.1007/s11157-014-9352-4. Yatoo AM, Hamid B, Sheikh TA, Ali S, Bhat SA, Ramola S, Ali MdN, Baba ZA, Kumar S. Global perspective of municipal solid waste and landfill leachate: generation, composition, eco-toxicity, and sustainable management strategies. Environ Sci Pollut Res 2024;31:23363–92. https://doi.org/10.1007/s11356-024-32669-4. Zambrano-Monserrate MA, Ruano MA, Ormeño-Candelario V. Determinants of municipal solid waste: a global analysis by countries’ income level. Environ Sci Pollut Res 2021;28:62421–30. https://doi.org/10.1007/s11356-021-15167-9. Pal MS, Bhatia M. Current status, topographical constraints, and implementation strategy of municipal solid waste in India: a review. Arab J Geosci 2022;15:1176. https://doi.org/10.1007/s12517-022-10414-w. Wilson DC, Velis CA, Rodic L. Integrated sustainable waste management in developing countries. Proc Inst Civ Eng - Waste Resour Manag 2013;166:52–68. https://doi.org/10.1680/warm.12.00005. Gbanie SP, Tengbe PB, Momoh JS, Medo J, Kabba VTS. Modelling landfill location using Geographic Information Systems (GIS) and Multi-Criteria Decision Analysis (MCDA): Case study Bo, Southern Sierra Leone. Appl Geogr 2013;36:3–12. https://doi.org/10.1016/j.apgeog.2012.06.013. Bojórquez-Tapia LA, Sánchez-Colon S, Florez A. Building Consensus in Environmental Impact Assessment Through Multicriteria Modeling and Sensitivity Analysis. Environ Manage 2005;36:469–81. https://doi.org/10.1007/s00267-004-0127-5. Asfaw DM, Asnakew YW, Sendkie FB, Workineh EB, Mekonnen BA, Abdulkadr AA, Ali AK. Perceived social, economic, environmental and health effects of solid waste management practices in logia town, afar, ethiopia. Discov Sustain 2024;5:308. https://doi.org/10.1007/s43621-024-00533-7. Gallagher L, Ferreira S, Convery F. Host community attitudes towards solid waste landfill infrastructure: comprehension before compensation. J Environ Plan Manag 2008;51:233–57. https://doi.org/10.1080/09640560701864878. Chang N-B, Parvathinathan G, Breeden JB. Combining GIS with fuzzy multicriteria decision-making for landfill siting in a fast-growing urban region. J Environ Manage 2008;87:139–53. https://doi.org/10.1016/j.jenvman.2007.01.011. Djokanović S, Abolmasov B, Jevremović D. GIS application for landfill site selection: a case study in Pančevo, Serbia. Bull Eng Geol Environ 2016;75:1273–99. https://doi.org/10.1007/s10064-016-0888-0. Kontos TD, Komilis DP, Halvadakis CP. Siting MSW landfills with a spatial multiple criteria analysis methodology. Waste Manag 2005;25:818–32. https://doi.org/10.1016/j.wasman.2005.04.002. Kharat MG, Kamble SJ, Raut RD, Kamble SS, Dhume SM. Modeling landfill site selection using an integrated fuzzy MCDM approach. Model Earth Syst Environ 2016;2:53. https://doi.org/10.1007/s40808-016-0106-x. Sumathi VR, Natesan U, Sarkar C. GIS-based approach for optimized siting of municipal solid waste landfill. Waste Manag 2008;28:2146–60. https://doi.org/10.1016/j.wasman.2007.09.032. Yildirim V. Application of raster-based GIS techniques in the siting of landfills in Trabzon Province, Turkey: a case study. Waste Manag Res J Sustain Circ Econ 2012;30:949–60. https://doi.org/10.1177/0734242X12445656. Suleman HA, Baffoe PE. Selecting Suitable Sites for Mine Waste Dumps Using GIS Techniques at Goldfields, Damang Mine. Ghana Min J 2017;17:9–17. https://doi.org/10.4314/gm.v17i1.2. Boroushaki S, Malczewski J. Measuring consensus for collaborative decision-making: A GIS-based approach. Comput Environ Urban Syst 2010;34:322–32. https://doi.org/10.1016/j.compenvurbsys.2010.02.006. Aksoy E, San BT. Geographical information systems (GIS) and Multi-Criteria Decision Analysis (MCDA) integration for sustainable landfill site selection considering dynamic data source. Bull Eng Geol Environ 2019;78:779–91. https://doi.org/10.1007/s10064-017-1135-z. Demesouka O, Vavatsikos A, Anagnostopoulos K. GIS-based multicriteria municipal solid waste landfill suitability analysis: A review of the methodologies performed and criteria implemented. Waste Manag Res J Sustain Circ Econ 2014;32:270–96. https://doi.org/10.1177/0734242X14526632. Mvula RLS, Mundike J, Nguvulu A. Spatial suitability analysis for site selection of municipal solid waste landfill using hybrid GIS and MCDA approach: The case of Kitwe, Zambia. Sci Afr 2023;21:e01885. https://doi.org/10.1016/j.sciaf.2023.e01885. Hashemkhani Zolfani S, Yazdani M, Zavadskas EK. An extended stepwise weight assessment ratio analysis (SWARA) method for improving criteria prioritization process. Soft Comput 2018;22:7399–405. https://doi.org/10.1007/s00500-018-3092-2. Alanbari MA, Al-Ansari N, Jasim HK. GIS and Multicriteria Decision Analysis for Landfill Site Selection in Al-Hashimyah Qadaa. Nat Sci 2014;06:282–304. https://doi.org/10.4236/ns.2014.65032. Alkaradaghi K, Ali SS, Al-Ansari N, Laue J, Chabuk A. Landfill Site Selection Using MCDM Methods and GIS in the Sulaimaniyah Governorate, Iraq. Sustainability 2019;11:4530. https://doi.org/10.3390/su11174530. Azadeh A, Saberi M, Atashbar NZ, Chang E, Pazhoheshfar P. Z-AHP: A Z-number extension of fuzzy analytical hierarchy process. 2013 7th IEEE Int. Conf. Digit. Ecosyst. Technol. DEST, Menlo Park, CA, USA: IEEE; 2013, p. 141–7. https://doi.org/10.1109/DEST.2013.6611344. Feizizadeh B, Ghorbanzadeh O. GIS-based Interval Pairwise Comparison Matrices as a Novel Approach for Optimizing an Analytical Hierarchy Process and Multiple Criteria Weighting. GI_Forum 2017;1:27–35. https://doi.org/10.1553/giscience2017_01_s27. Barton DN, Sundt H, Bustos AA, Fjeldstad H-P, Hedger R, Forseth T, Köhler B, Aas Ø, Alfredsen K, Madsen AL. Multi-criteria decision analysis in Bayesian networks - Diagnosing ecosystem service trade-offs in a hydropower regulated river. Environ Model Amp Softw 2019;124:104604. https://doi.org/10.1016/j.envsoft.2019.104604. Gorsevski PV, Donevska KR, Mitrovski CD, Frizado JP. Integrating multi-criteria evaluation techniques with geographic information systems for landfill site selection: A case study using ordered weighted average. Waste Manag 2012;32:287–96. https://doi.org/10.1016/j.wasman.2011.09.023. Hazarika R, Saikia A. Landfill site suitability analysis using AHP for solid waste management in the Guwahati Metropolitan Area, India. Arab J Geosci 2020;13:1148. https://doi.org/10.1007/s12517-020-06156-2. Jain K, Subbaiah YVS. Site Suitability Analysis for Urban Development Using GIS. J Appl Sci 2007;7:2576–83. https://doi.org/10.3923/jas.2007.2576.2583. Jamshidi A, Kazemijahandizi E, Allahgholi L, Monavari SM, Tajziehchi S, Hashemi A, Moshtaghie M, Jamshidi M. Landfill Site Selection: a Basis Toward Achieving Sustainable Waste Management. Pol J Environ Stud 2015;24:1021–9. https://doi.org/10.15244/pjoes/28641. Mushtaq J, Dar AQ, Ahsan N. Spatial-temporal variations and forecasting analysis of municipal solid waste in the mountainous city of north-western Himalayas. SN Appl Sci 2020;2. https://doi.org/10.1007/s42452-020-2975-x. Thungngern J, Wijitkosum S, Sriburi T, Sukhsri C. A Review of the Analytical Hierarchy Process (AHP): An Approach to Water Resource Management in Thailand. Appl Environ Res 2015:13–32. https://doi.org/10.35762/AER.2015.37.3.2. Yesilnacar MI, Süzen ML, Kaya BŞ, Doyuran V. Municipal solid waste landfill site selection for the city of Şanliurfa-Turkey: an example using MCDA integrated with GIS. Int J Digit Earth 2012;5:147–64. https://doi.org/10.1080/17538947.2011.583993. Annual Report. New Delhi: Ministry of Housing and Urban Affairs; 2022. Gupta N, Gupta R. Solid waste management and sustainable cities in India: the case of Chandigarh. Environ Urban 2015;27:573–88. https://doi.org/10.1177/0956247815581747. The Sustainable Development Goals Report. 2024. AQUIFER MAPPING AND GROUND WATER MANAGEMENT Alwar District, Rajasthan. Jaipur: CENTRAL GROUND WATER BOARD MINISTRY OF WATER RESOURCES, RIVER DEVELOPMENT & GANGA REJUVANATION GOVERNMENT OF INDIA WESTERN REGION, JAIPUR; 2013. Directorate of Census Operations, Rajasthan. Census of India 2011 - Rajasthan - Series 09 - Part XII B - District Census Handbook, Alwar. vol. Part XII B. 2011th ed. Rajasthan: Office of the Registrar General & Census Commissioner, India (ORGI); 2011. Factsheet of industrial emissions in Alwar. New Delhi: Centre for Science and Environment; 2023. Rezaeisabzevar Y, Bazargan A, Zohourian B. Landfill site selection using multi criteria decision making: Influential factors for comparing locations. J Environ Sci 2020;93:170–84. https://doi.org/10.1016/j.jes.2020.02.030. El Baba M, Kayastha P, De Smedt F. Landfill site selection using multi-criteria evaluation in the GIS interface: a case study from the Gaza Strip, Palestine. Arab J Geosci 2015;8:7499–513. https://doi.org/10.1007/s12517-014-1736-9. Pasalari H, Nodehi RN, Mahvi AH, Yaghmaeian K, Charrahi Z. Landfill site selection using a hybrid system of AHP-Fuzzy in GIS environment: A case study in Shiraz city, Iran. MethodsX 2019;6:1454–66. https://doi.org/10.1016/j.mex.2019.06.009. Elkhrachy I, Alhamami A, Alyami SH. Landfill Site Selection Using Multi-Criteria Decision Analysis, Remote Sensing Data, and Geographic Information System Tools in Najran City, Saudi Arabia. Remote Sens 2023;15:3754. https://doi.org/10.3390/rs15153754. Kapilan S, Elangovan K. Potential landfill site selection for solid waste disposal using GIS and multi-criteria decision analysis (MCDA). J Cent South Univ 2018;25:570–85. https://doi.org/10.1007/s11771-018-3762-3. Vasanthi P, Kaliappan S, Srinivasaraghavan R. Impact of poor solid waste management on ground water. Environ Monit Assess 2008;143:227–38. https://doi.org/10.1007/s10661-007-9971-0. Ashraf MA, Yusoff I, Yusof M, Alias Y. Study of contaminant transport at an open-tipping waste disposal site. Environ Sci Pollut Res 2013;20:4689–710. https://doi.org/10.1007/s11356-012-1423-x. Davies AL, Redpath SM, Bryce R. Use of Multicriteria Decision Analysis to Address Conservation Conflicts. Conserv Biol 2013;27:936–44. https://doi.org/10.1111/cobi.12090. Saaty TL. The analytic hierarchy process (AHP). vol. 41. 1980. McIntyre C, Parfitt MK. Decision Support System for Residential Land Development Site Selection Process. J Archit Eng 1998;4:125–31. https://doi.org/10.1061/(ASCE)1076-0431(1998)4:4(125). Karimi AR, Mehrdadi N, Hashemian SJ, Bidhendi GRN, Moghaddam RT. Selection of wastewater treatment process based on the analytical hierarchy process and fuzzy analytical hierarchy process methods. Int J Environ Sci Technol 2011;8:267–80. https://doi.org/10.1007/BF03326215. Csató L. Characterization of an inconsistency ranking for pairwise comparison matrices. Ann Oper Res 2017;261:155–65. https://doi.org/10.1007/s10479-017-2627-8. Mohd WRW, Abdullah L. Pythagorean fuzzy analytic hierarchy process to multi-criteria decision making. vol. 1905, author; 2017. https://doi.org/10.1063/1.5012208. Zhou X, Ishizaka A, Deng Y, Chan FTS, Hu Y. A DEMA℡-based completion method for incomplete pairwise comparison matrix in AHP. Ann Oper Res 2018;271:1045–66. https://doi.org/10.1007/s10479-018-2769-3. Saaty TL, Vargas LG. Models, Methods, Concepts & Applications of the Analytic Hierarchy Process. Springer; 2012. Malczewski J. On the Use of Weighted Linear Combination Method in GIS: Common and Best Practice Approaches. Trans GIS 2000;4:5–22. https://doi.org/10.1111/1467-9671.00035. Vavatsikos AP, Demesouka OE, Anagnostopoulos KP. GIS-based suitability analysis using fuzzy PROMETHEE. J Environ Plan Manag 2020;63:604–28. https://doi.org/10.1080/09640568.2019.1599830. Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6424995","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":441586268,"identity":"24f1f3f0-6002-4494-ac0e-95f1bdc7f67f","order_by":0,"name":"Mintu Saini","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA8ElEQVRIie3RsQqCQBjAcQ8hl7MXqFcIdLkIRB+kRTmwqV0o6EK4nqGhR2htFg5ykW4VXIzWBh/AoTsdQ7Mt6P6LN3w/Pu7UNJXqF9PbD9R0QBI/csQZ7JMPBJCW6PuyykJJSD/RWiIyYvtIWXPsJbODmT5g7U7nBqATmHH3fGBiy9ZZdhHExkFsUgwXsSRRgS9ZIMg1XJNOAu3YJDq0WLOlwCgRBBDWT2C9a4lJbxjx+xAyYpLI6ycuygdsOZ5oKol8ZOyjXGzx++7CM6t61hvP4mkpfqXrIb66l9XW6SRvBc2kP3Rc5n0zrFKpVP/RC6jOZNuCAD5PAAAAAElFTkSuQmCC","orcid":"","institution":"Banasthali Vidhyapith","correspondingAuthor":true,"prefix":"","firstName":"Mintu","middleName":"","lastName":"Saini","suffix":""},{"id":441586269,"identity":"7861517c-ffee-4c07-a683-08264506c329","order_by":1,"name":"Dr. Salahuddin Mohd.","email":"","orcid":"","institution":"Banasthali Vidhyapith","correspondingAuthor":false,"prefix":"Dr.","firstName":"Salahuddin","middleName":"","lastName":"Mohd.","suffix":""}],"badges":[],"createdAt":"2025-04-11 05:38:18","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6424995/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6424995/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":80779412,"identity":"b997343e-33d2-4199-baa2-76b40e66a042","added_by":"auto","created_at":"2025-04-17 04:22:43","extension":"png","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":333489,"visible":true,"origin":"","legend":"\u003cp\u003eLocation of Alwar City in India\u003c/p\u003e","description":"","filename":"floatimage1.png","url":"https://assets-eu.researchsquare.com/files/rs-6424995/v1/cfc0addea838b295af90e1bc.png"},{"id":80780343,"identity":"d3b6e190-6055-478b-88f2-4bc27885ab71","added_by":"auto","created_at":"2025-04-17 04:30:43","extension":"png","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":479217,"visible":true,"origin":"","legend":"\u003cp\u003eFactor Criteria Maps Continue\u003c/p\u003e","description":"","filename":"floatimage2.png","url":"https://assets-eu.researchsquare.com/files/rs-6424995/v1/bbbb1179aa9186be30cee979.png"},{"id":80779413,"identity":"580cebdf-c04d-4928-a945-ea6f89d831a4","added_by":"auto","created_at":"2025-04-17 04:22:43","extension":"png","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":461121,"visible":true,"origin":"","legend":"\u003cp\u003eFactor Criteria Maps\u003c/p\u003e","description":"","filename":"floatimage3.png","url":"https://assets-eu.researchsquare.com/files/rs-6424995/v1/86231f0c452cea5ad8313679.png"},{"id":80779426,"identity":"34db87b9-3dd5-4817-af5a-1f35faa1e64a","added_by":"auto","created_at":"2025-04-17 04:22:43","extension":"png","order_by":4,"title":"Figure 4","display":"","copyAsset":false,"role":"figure","size":230546,"visible":true,"origin":"","legend":"\u003cp\u003eFinal constraint map of Study area\u003c/p\u003e","description":"","filename":"floatimage4.png","url":"https://assets-eu.researchsquare.com/files/rs-6424995/v1/f964a6bb6712862ed8268024.png"},{"id":80779421,"identity":"0d3bf48c-7780-4683-8202-157d71de0ebd","added_by":"auto","created_at":"2025-04-17 04:22:43","extension":"png","order_by":5,"title":"Figure 5","display":"","copyAsset":false,"role":"figure","size":252320,"visible":true,"origin":"","legend":"\u003cp\u003eFinal Landfill Site Suitability Map\u003c/p\u003e","description":"","filename":"floatimage5.png","url":"https://assets-eu.researchsquare.com/files/rs-6424995/v1/50e75a8adc58db3f9da5a830.png"},{"id":80781275,"identity":"264ab164-6726-46cc-9526-52b365dbe41d","added_by":"auto","created_at":"2025-04-17 04:38:48","extension":"pdf","order_by":0,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2598280,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6424995/v1/0324d968-d0d7-4e31-9e2d-fd80337d34f6.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Integrating GIS and AHP for Optimal Landfill Site Selection: A Case Study of Alwar City, India","fulltext":[{"header":"Introduction","content":"\u003cp\u003eMunicipal solid waste (MSW) generation is becoming a global environmental concern with significant implications for public health, environmental degradation, and climate change [1]. The World Bank report \u0026quot;Waste 2.0\u0026quot;\u0026nbsp;highlights that the generation of municipal solids is predicted to grow from 2.1 billion tonnes per annum in 2023 to 3.8 billion tonnes by 2050 [2]. In India, the country generates around 160,038.9 tonnes per day (TPD) of solid waste, of which approximately 152,749.5 TPD was collected, reflecting a collection efficiency of 95.4% [3]. Of the collected waste, 79,956.3 TPD (50%) was treated, while 29,427.2 TPD (18.4%) was sent to landfills [3]. However, 50,655.4 TPD, or 31.7% of the total waste generated, remains unaccounted for [3].\u003c/p\u003e\n\u003cp\u003eThis enormous amount of MSW generation is influenced by various factors such as GDP growth, rapid urbanization, population growth, tourist flow, and industrial expansion [4\u0026ndash;6]. This enormous increase in the generation of municipal solid waste poses serious challenges for waste management systems, especially in developing countries worldwide [7]. Thus, to overcome the challenges posed by MSW, the \u0026nbsp;need to adhere to the principle of integrated solid waste management (ISWM).\u003c/p\u003e\n\u003cp\u003eIntegrated solid waste management (ISWM) is a comprehensive waste management process that aims to optimize waste management by focusing on both physical components (collection, disposal, and recycling) and governance aspects (inclusivity, financial sustainability, and sound institutions) [8]. The United States Environmental Protection Agency (EPA) has delineated the main elements of the ISWM as (1) source reduction, (2) recycling and composting, (3) combustion (waste-to-energy facilities), and (4) landfills. The ISWM shows that the waste management hierarchy starts by reducing waste from the source to collection, recycling, segregation, treatment, and the end of the landfill. The landfill comes at the end of the final stage, and the least attention has been paid to it [9].\u003c/p\u003e\n\u003cp\u003eImproper landfill siting can have significant environmental impacts, such as air, water, and soil pollution, as well as harm-sensitive ecosystems [10]. Socially, it can lead to public opposition, conflicts within communities, and the community\u0026apos;s well-being and economic conditions [11,12].\u003c/p\u003e\n\u003cp\u003eThe multitude of challenges MSW poses and the identification and allocation of appropriate sites for waste disposal have become crucial for managing municipal solid waste (MSW) [9]. The main objective of finding an optimal site for waste disposal is to mitigate the adverse effects of MSW on the environment, ecology, and economy [13].\u0026nbsp;\u003c/p\u003e\n\u003cp\u003eThe selection of a landfill site is a complex, multi-criteria process that requires careful assessment and evaluation of various factors to minimize environmental and public health risks and optimize available resources [14]. Thus, conducting an in-depth evaluation and making informed decisions regarding landfill site selection is critical for achieving sustainable and environmentally responsible solid waste management.\u003c/p\u003e\n\u003cp\u003eVarious studies have found that integrating various disciplines, such as environmental science, hydrogeology, sociology, economics, and engineering, can help determine optimal landfill sites. Kontos and Komin in [15] incorporated socioeconomic and environmental variables to determine an appropriate landfill site for solid waste disposal. While Kharat and others in [16] identified sensitive areas and intra-municipal factors as the top two significant influences. While Sumathi in \u0026nbsp;[17] has incorporated geological, environmental, and socioeconomic factors, and Djokanovic and others in [14] found geological engineering criteria to be the most important, followed by hydrogeological and hydrological criteria. However, the traditional method of landfill site selection is insufficient because of the complex and multi-criteria evaluation processes involved. It requires knowledge of many criteria, parameters, regulations, and simultaneous evaluations [14,18].\u003c/p\u003e\n\u003cp\u003eHowever, advancements in geospatial technologies, such as Geographic Information Systems (GIS) and remote sensing, have helped significantly address challenges in solid waste management [19]. However, applying GIS and remote sensing techniques can pose difficulties in harmonizing expert knowledge with public perceptions [20]. Thus, owing to the complexity of decision-making for landfill site selection, Multi-criteria Decision Analysis (MCDA) is a valuable methodological approach [9,21].\u003c/p\u003e\n\u003cp\u003e\u0026nbsp;This approach facilitates decision-making by turning a problem into smaller, manageable components and allowing for a systematic evaluation of each criterion before integrating them into a broad framework for overall analysis [22,23]. Various MCDA methods, such as the Analytic Hierarchy Process (AHP), TOPSIS, and PROMETHEE, are now commonly used with GIS for site selection [24]\u003c/p\u003e\n\u003cp\u003eThese methods allow the consideration of multiple criteria, including spatial and non-spatial factors, while simultaneously providing sound data analysis at the spatial level [22]. Various studies on the integration of GIS and MCDA for landfill site selection have been conducted in Iraq [25,26], Iran [16,27,28], Norway [29], Serbia [14], Southern Sierra Leone [9], Macedonia [30]; Guwahati, India [31]; Roorkee, India [32], Azarbaijan [33], India [34], Thailand [35], Turkey [18,36], and Zambia [23]. Most studies are outside India, mainly in the Middle East or Europe. Only a few studies have been conducted in India, such as Guwahati and Roorkee. According to the Ministry of Urban Government of India, in India, where more than 60 cities are million plus, 40 percent of its urban population resides in tier 2 and tier 3 cities [37]. However, there is limited application of GIS and MCDA for landfill site selection, specifically in the state of Rajasthan, and none of the cities has integrated GIS and MCDA in landfill site selection, rather than based on convenience for city administration.\u003c/p\u003e\n\u003cp\u003e\u0026nbsp;In the last two decades, the problem of solid waste management in Indian cities has become complex, similar to that in fast-growing industrial cities [38]. The rise in municipal solid waste in Alwar City can be attributed to factors such as a 22.7% surge in population in the last decade, swift industrialization, migration into urban areas, inadequate urban planning, and insufficient capital investment in this sector. This research is driven by the urgent requirement to assess the appropriateness of a landfill location through the established scientific approaches of integrating MCDA and GIS in Alwar City and to provide evidence-based insight for sustainable landfill site management. The city has an existing landfill site operated by the Alwar Municipal Corporation. However, this dumping site\u0026apos;s selection is mainly based on land availability and administrative convenience and not on scientific parameters regarding environmental, social, and infrastructural aspects. The National Green Tribunal report regarding Haider Ali versus the Commissioner of Nagar Nigam, Alwar, and others emphasizes issues such as open dumping, inadequate operation of processing plants, unpleasant odours near highways, and a significant risk of groundwater pollution.\u003c/p\u003e\n\u003cp\u003eBased on the literature review, it is evident that most studies have combined GIS and MCDA, and other techniques have been conducted outside India. In India, there is limited literature on the application of GIS for solid waste management. Regarding the state of Rajasthan, where Alwar City is situated, literature exists only for the status of waste collection and types of waste. Thus, the primary aim of this study was to develop a landfill suitability map for Alwar City based on its 2051 master plan boundary. The uniqueness of this research stems from the combination of geospatial technology and MCDA to tackle the issue of identifying suitable landfill sites. This challenge has been largely overlooked in Indian cities. This study integrates environmental factors, such as forest area, to take ecological consideration of the Aravalli range, groundwater, etc. Socioeconomic factors include roads and residential areas. This research holds considerable significance, as it adds to the existing knowledge on selecting landfill sites that are scientifically sound, socially acceptable, and economically feasible in a densely populated and agrarian nation such as India. \u0026nbsp;It will address waste management challenges, such as air, water, soil pollution, and public health, aligning with the principle of sustainable development goals 6 and target 6.3 by 2030 [39].\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eDescription of study area\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eAlwar, a city steeped in rich historical significance, is situated in the northern Indian state of Rajasthan (Figure 1) at a latitude of 27.5530\u0026deg; N and longitude of 76.6346\u0026deg; E, with an average elevation of approximately 268 m (879 feet) above sea level [40]. Nestled within the Aravalli Range in northeastern Rajasthan, the Alwar is characterized by rugged terrain surrounded by hills and forests. The region experiences a semi-arid climate, which is classified under the K\u0026ouml;ppen climate classification system as Cwg. The monsoon season, which begins in late June and continues until September, brings moderate to heavy rainfall, averaging approximately 600 mm annually [40]. According to the 2011 Census, Alwar City has a population of approximately 341,422 residents [41]. As the city expanded, new areas emerged, featuring broader roads, modern residential complexes, and commercial spaces. This rapid urbanization has resulted in mixed land-use patterns, where residential, commercial, and industrial activities often coexist [42]. Furthermore, Alwar\u0026apos;s proximity to Delhi and Jaipur has played a significant role in its growth as part of the National Capital Region (NCR), shaping its economic and spatial development trajectory.\u003c/p\u003e"},{"header":"Material and Methods","content":"\u003cp\u003e\u003cstrong\u003eData Collection\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThis study contains ten distinct input map layers: elevation, slope, residential area, roads (highways), aquifers, rivers, land use and land cover, forest area, soil texture, and water body (Table 1). The constraint criteria are identified based on the existing rules of the CPCB, RSPCB, and Municipal Solid Waste Management Rule 2016 and from academic experts of relevant disciplines to safeguard the environment, public health, and other aesthetic aspects. The constraint criteria are a water body and a 500m area around it, a river and a 500m area around it, a residential area and zone of 400m and a dense and moderately protected forest area. Factors such as water bodies, rivers, residential areas, and forests are both factor criteria, and constraint criteria are double criteria.\u003c/p\u003e\n\u003cp\u003eData for LULC and Water Body layer sourced as Sentinel 2A Imagery for 2023 with 10m resolution obtained from the European Space Agency, roads data from Open Street maps plate form, other data such as river, aquifer, soil, sourced from India WRIS Portal Government of India, while Digital Elevation data sourced from SRTM 30M resolution, USGS Earth Explorer. All map layers were created using ArcGIS software, with statistical analysis of MCDA AHP conducted through Microsoft Excel 2021. Each map layer adheres to a unified reference system consistent with national mapping standards, specifically WGS 84 and UTM 43N. A raster data model was selected, and every input map layer, whether initially in raster or vector format, was either resampled or converted to a raster with a consistent grid size of 30 meters. The layers, buffer zones, and rankings are below (Table 1).\u003c/p\u003e\n\u003cp\u003eTable 1. Summery of input data used in this study\u003c/p\u003e\n\u003ctable border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"100%\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"2\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eLayer name\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"2\" style=\"width: 26px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eSource map\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"2\" style=\"width: 22px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eBuffer zones(m)\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"2\" style=\"width: 19px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eRanking\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd height=\"31\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign=\"bottom\" style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"19\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"5\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eResidential Area\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"5\" style=\"width: 26px;\"\u003e\n \u003cp\u003eSentinel 2A 2023 imagery. Supervised classification of LULC.\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e0-200\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"26\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e200-400\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e400-800\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e800-1200\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"22\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e\u0026gt;1200\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"4\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"5\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eDistance from Roads\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"5\" style=\"width: 26px;\"\u003e\n \u003cp\u003eopen street map portal\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e0-200\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"17\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e200-400\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e400-800\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e800-1200\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"36\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e\u0026gt;1200\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"5\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eDistance from River\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"5\" style=\"width: 26px;\"\u003e\n \u003cp\u003eHydrological data India WRIS\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e0-200\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e200-400\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e400-800\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e800-1200\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"36\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e\u0026gt;1200\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"5\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eGroundwater Aquifer\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"5\" style=\"width: 26px;\"\u003e\n \u003cp\u003eIndia WRIS, GSI vector data\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003eGneiss and Quartzite\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"54\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003elimestone\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003emarble\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003eschist\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003eolder alluvium\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"36\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"3\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eSoil Texture\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"3\" style=\"width: 26px;\"\u003e\n \u003cp\u003eIndia WRIS portal Spatial data (rater file)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003efine texture\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003ecoarse texture\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"36\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003erocky and non-soil\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"54\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"5\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eForest Area\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"5\" style=\"width: 26px;\"\u003e\n \u003cp\u003eForest Survey of India raster data\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003ewater body\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"5\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003edense forest\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"5\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003emoderate dense\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"8\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003eopen/scrub vegetation\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"5\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003enon forest\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"36\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"5\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eLULC\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"5\" style=\"width: 26px;\"\u003e\n \u003cp\u003eSentinel 2A 2023 imagery. Supervised classification of LULC.\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003ewater\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003ebuilt-up\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003eagriculture\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"36\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003evegetation\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"36\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003ebarren land\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"36\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"5\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eSlope (in Degree)\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"5\" style=\"width: 26px;\"\u003e\n \u003cp\u003eUSGS Earth Explorer, SRTM 30M\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e0-12\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e12-25\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e25-38\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e38-51\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e51-63\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"5\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eElevation\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"5\" style=\"width: 26px;\"\u003e\n \u003cp\u003eUSGS Earth Explorer, SRTM 30M\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e229-272\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e272-322\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e322-401\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e401-489\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e489-602\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd rowspan=\"2\" style=\"width: 28px;\"\u003e\n \u003cp\u003e\u003cstrong\u003eWater Body\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd rowspan=\"2\" valign=\"bottom\" style=\"width: 26px;\"\u003e\n \u003cp\u003eLULC Classification\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e0-500\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"width: 22px;\"\u003e\n \u003cp\u003e\u0026gt;500\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 19px;\"\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd style=\"width: 3px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003ctd height=\"18\" style=\"width: 0px;\"\u003e\u003cbr\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003e\u003cstrong\u003eMethods\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eSetting of factor criteria\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe criteria are broadly categorized into environmental factors (river, soil, forest, aquifers, water body elevation and slope) and socio-economic factors (roads, residential area, land use, and land cover). All factor criteria are ranked from 1 to 5: one is not suitable, two is less suitable, three is moderately suitable, four is suitable, and five is most suitable (Table 1).\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eRiver and Streams.\u003c/strong\u003e A safe distance from water bodies like rivers, ponds, etc., is crucial because landfills generate leachate and unpleasant gaseous emissions that can contaminate groundwater [43]. This study\u0026apos;s river and stream criteria are \u0026lt;200 m unsuitable, 200 \u0026ndash; 400 m less suitable, 400-800 m moderately suitable, 800-1200 m suitable, and \u0026gt;1200 m most suitable.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eLand Use and Land Cover (LULC).\u0026nbsp;\u003c/strong\u003eLand use and land cover (LULC) are crucial considerations when selecting locations for landfill sites to mitigate environmental harm [30]. The 2023 Sentinel 2A Satellite Imagery underwent a supervised classification process with ArcGIS software, employing the maximum likelihood parametric decision rule (Saini et al., 2024). This classification relied on a predetermined LULC classification scheme from ESRI and a field survey of the study area. The framework encompassed six categories: water bodies, vegetation, built-up areas, agriculture, wasteland, and bare land. The relative suitability of different land use classes is shown in Table (1).\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eRoads.\u0026nbsp;\u003c/strong\u003eThe ease of access and year-round usability of the road are crucial factors for landfill site suitability. It is essential to position a landfill at a reasonable distance from both primary and secondary roads [15]. Based on various literature, this study uses different buffer distances: \u0026lt;200 m unsuitable, 200 \u0026ndash; 400 m as suitable, 400-800 m as most suitable, 800-1200 m as moderately suitable, and \u0026gt;1200 m less suitable.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eResidential Area\u003c/strong\u003e. The safe distance between the residential area and the landfill site is one of the several factors that need to be taken into account, as the optimum distance will keep the transport cost of waste to the dumping site low and reduce the adverse effect of the landfill site at the same time [26,33]. Based on these considerations, the buffer distance from the residential area is as follows: \u0026lt;200 m is unsuitable, 200 \u0026ndash; 400 m is less suitable, 400-800 m is moderately suitable, 800-1200 m is suitable, and \u0026gt;1200 m is most suitable.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eElevation.\u0026nbsp;\u003c/strong\u003eElevation is vital in landfill site selection, influencing drainage, accessibility, and potential environmental impacts [44].The role of elevation varies according to local conditions; the study area is situated in the hill area of Aravalli; thus, elevation is relevant in this study. The elevation in this region varies from 229 to 602 meters. To safeguard the environment and biodiversity and to avoid mountainous regions, elevations between 229 and 272 m are most suitable, 272 to 322 m are suitable, 322 to 401 m are moderately suitable, 401 to 489 m are less suitable, and elevations above 489 meters as not suitable.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eSlope.\u003c/strong\u003e The slope is an important factor in minimizing landscaping costs and leachate leakage; gentle slopes are most suitable for landfills [22]. A steeper slope is unsuitable due to the higher cost of construction and maintenance of landfill sites [25]. In the study area, slope values range from 2◦ to 63◦, slopes between 0◦ and 12◦ are considered most suitable, 12◦ to 25◦ are suitable, 25◦ to 38◦ are moderately suitable, and those greater than 38◦ are not suitable.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eAquifer.\u003c/strong\u003e Aquifers are the critical factors in landfill site selection due to the potential risk of groundwater contamination [16,45]. The aquifer in the study area has five types; based on existing literature, the relative suitability is assigned as Gneiss and Quartzite are most suitable, limestone is considered unsuitable, marble is suitable, schist is moderately suitable, and older alluvium is less suitable.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eSoil.\u003c/strong\u003e Soil texture, defined by the proportions of clay, sand, and silt particles, is key in determining landfill site suitability, as clayey soils are generally preferred for landfills due to their low permeability, which helps prevent leachate from contaminating groundwater [46,47]. Three distinct soil types were identified in the study area: fine-textured soil, deemed moderately important; coarse-textured soil, considered less suitable; and rocky or nonsoil types, regarded as suitable.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eForest.\u003c/strong\u003e Forests are sensitive and ecologically fragile areas important for selecting landfill sites. Forested areas should considered less suitable for landfill site selection [16]. The study area is situated on the outskirts of the Aravalli Mountain range, where various types of forests and vegetation are present. For landfill suitability, the non-forest areas are most suitable, open or scrub forest areas are considered suitable, moderately dense forests are seen as moderately suitable, and dense forest areas are unsuitable.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eWater Body.\u0026nbsp;\u003c/strong\u003eProtecting water resources is a primary concern in landfill site selection. Maintaining adequate distance from surface water bodies is crucial to prevent contamination [48]. The proximity to water bodies is an important constraint, as landfills located too close can lead to water pollution and contamination [48,49]. In this study, a safe distance of 500 m is considered unsuitable, but beyond that, it is considered suitable.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-Criteria Decision Analysis\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eMulti-criteria decision analysis (MCDA) is a systematic method used to assess and prioritize options based on several, often competing, criteria. This method is becoming popular in various domains, such as environmental impact evaluation, healthcare decision-making, and conservation management [10,50]. Various MCDA techniques are employed for decision-making tasks, such as determining the suitability of landfill sites. This research utilizes the Analytical Hierarchy Process (AHP) and Weighted Linear Combination (WLC) methods of MCDA. Microsoft Excel 2021 is utilized to create the pairwise comparison matrix.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnalytic Hierarchy Process.\u003c/strong\u003e\u0026nbsp;\u003c/p\u003e\n\u003cp\u003eAHP was developed by Satty in 1980 and is based on pairwise comparison to determine the relative importance of the criteria [51]. It facilitates the prioritization of criteria and supports complex decision-making by deconstructing criteria into hierarchical structures with quantitative and qualitative elements [52]. This method successfully selects wastewater treatment processes [53]. In this study, focus group discussion was conducted with expert professors from various disciplines such as geology, geography, hydrology civ, civil engineering and experts in public administration to assign the relative importance of Satty\u0026rsquo;s nine-point scale [23]. The relative importance of ten criteria, as in Table (2), is assigned in a pairwise comparison matrix. This method involves comparing alternatives or criteria in pairs to determine their relative importance or preference [54\u0026ndash;56].\u003c/p\u003e\n\u003cp\u003eAccording to Saaty and Vargas in [57], the consistency ratio (CR) for pairwise comparisons should be below 10%. The Consistency Index (CI) was calculated using the following formula:\u003c/p\u003e\n\u003cp\u003e\u003cimg src=\"data:image/png;base64,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\"\u003e\u003c/p\u003e\n\u003cp\u003eIn this context, whereas n denotes the total number of criteria, \u0026lambda;max is the largest eigenvalue of the judgment matrix. A lower Consistency Index (CI) indicates greater consistency in the pairwise comparison matrix. The Consistency Ratio (CR) is determined by dividing the CI by the Random Consistency Index (RI) for the given value of n, as illustrated in Table 3.\u003c/p\u003e\n\u003cp\u003e\u003cimg src=\"https://myfiles.space/user_files/122228_c8a1650c59388082/122228_custom_files/img1744781175.png\"\u003e\u003c/p\u003e\n\u003cp\u003eTable 2. Random Index Value\u003c/p\u003e\n\u003ctable border=\"0\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003eOrder Matrix (n)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e6\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e7\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e8\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e9\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e10\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003eRandom Index (RI)\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.00\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.00\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.58\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.90\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1.12\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1.24\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1.32\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1.41\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1.45\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1.51\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003eSource: Satty(1980)\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eWEIGHTED LINEAR COMBINATION (WLC).\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u0026nbsp;This method is the most commonly used decision-making technique in GIS for creating composite. It allows the integration of various factors, with specific weight based on their relative importance, to derive a final suitability or vulnerability map [23,58,59]. In this study, the result from AHP was combined with WLC to get the final suitability map (Mvula et al., 2023). WLC is used to aggregate criteria weights and develop the suitability index value of potential area using the formula:\u003c/p\u003e\n\u003cp\u003e\u003cimg src=\"https://myfiles.space/user_files/122228_c8a1650c59388082/122228_custom_files/img174478117673.png\"\u003e\u003c/p\u003e\n\u003cp\u003eIn this context, Si denotes the suitability index for area i, and wi denotes the criterion\u0026apos;s weight. Xij is the value of the criterion, with n being the total number of criteria and Cj indicating the constraint score, which can be either 0 or 1 [30,43]. All ten map layers were standardized using ArcGIS, where each layer was \u0026quot;reclassified\u0026quot; through the spatial analyst tool. Each class was assigned a rank from 1 to 5, with one indicating not suitable, two less suitable, three moderately suitable, four suitable, and five most suitable.\u003c/p\u003e"},{"header":"Result and Discussion","content":"\u003cp\u003e\u003cstrong\u003eSuitability condition of criteria\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe total area for landfill suitability is ranked 1 to 5, where 1 indicates the least suitability and 5 represents the highest suitability, with 2, 3, and 4 denoting less suitable, moderately suitable, and suitable, respectively. Figures 2 and 3 illustrate the spatial distribution of suitability classifications based on factor criteria. The factors criteria, such as rivers and streams, show that around 98% of the area falls under the most suitable category because the study area lacks perennial streams. Similarly, a water body 2% area is classified as not suitable as a constraint area around 500m of a water body to prevent leachate leakage and contamination of the water body [11]. This data also explains that the study area is in arid condition, has no primary water source, and largely depends on groundwater for water supply.\u003c/p\u003e\n\u003cp\u003eMeanwhile, aquifer factor criteria are around 9% under the most suitable category, and 81% are classified as suitable. Similarly, 66% classified the most suitable and 10% as suitable under the road (highways) criteria. While residential areas are a significant constraint for landfill suitability, 73% are classified as not suitable, 9% as suitable, and 11% as most suitable due to rapid urbanization and infrastructure development in the study area. In land use and land cover factor criteria, 1% of the area is most suitable as barren land and sparsely vegetated, while 53% of the area is moderately suitable due to agricultural land; this is the fact that the study area is primarily agriculture dependent. Regarding slope and elevation criteria, 64% were classified as most suitable and 19% as suitable because the western part of the study area is covered under the mountain range of the Aravalli mountains. Similarly, of the Forest areas that occupy the western and northern part of the study area, 20% are classified as unsuitable and the rest, 80%, as suitable.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003eTable 3. Pairwise Comparision matrix\u003c/p\u003e\n\u003ctable border=\"0\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eRA\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eRO\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eRI\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eAQ\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eST\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eFA\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eLU\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eS\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eE\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eWB\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eEVW\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003ePercentage Weight\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eRA\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e4 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e7 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e7 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.189\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e18.9%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eRO\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e2 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.089\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e8.9%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eRI\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.155\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e15.5%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eAQ\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/4\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.066\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e6.6%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eST\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/7\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/7\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.022\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e2.2%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eFA\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.142\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e14.2%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eLU\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e2 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.061\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e6.1%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eS\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e2 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.038\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e3.8%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eE\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/7\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/5\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/3\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/2\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u0026nbsp;1/7\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.022\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e2.2%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eWB\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e7 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e3 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e5 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e7 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e1 \u0026nbsp; \u0026nbsp;\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e0.218\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd valign=\"bottom\"\u003e\n \u003cp\u003e\u003cstrong\u003e21.8%\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003eTotal\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e5.27\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e13.23\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e7.60\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e18.87\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e40.00\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e8.40\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e19.17\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e27.83\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e41.00\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e4.55\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e1.00\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003ctd\u003e\n \u003cp\u003e\u003cstrong\u003e100.00\u003c/strong\u003e\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd colspan=\"13\"\u003e\n \u003cp\u003eRA=Residential Area, RO=Road, RI=River, AQ=Aquifer, ST=Soil Texture, FA= Forest Area, LU=LULC, S=Slope, EL=Elevation, WB=Water Body, EVW=Eigen Vector Weight\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd colspan=\"13\"\u003e\n \u003cp\u003eLambda = 10.764, CI= 0.0849, CR= 0.056 or 5.6%\u003c/p\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003e\u003cstrong\u003eConstraint map\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe constraint map, as shown in Figure 4, is generated from criteria that are identified based on existing rules of CPCB, RSPCB, and Municipal Solid Waste Management Rule 2016, as well as from academic experts of relevant discipline to safeguard the environment, public health and other aesthetics aspect. The constraint factors are a water body and a 500m area around it, a river and a 500m area around it, a residential area and zone of 400m and a dense and moderately protected forest area. After combining all constraint areas, the result is that around 89% of the area is not suitable for landfill site suitability, and only 11% of the area is suitable. This study reveals that the west and north parts of the city are covered with hills and forest areas, and the north and the eastern parts are primarily residential and built-up areas that are mostly restricted to landfills. This research focused on safeguarding, restoring, and promoting the sustainable utilization of land ecosystems by effectively managing forests and stopping and reversing land degradation. Once the study\u0026apos;s findings are implemented, they will support the advancement of sustainable cities and communities (SDG 11) [39]. \u0026nbsp;By ensuring that urban areas and human communities are secure, adaptable, and sustainable, we can ultimately achieve the objective of SDG 3, which focuses on enhancing health and well-being through the prevention and treatment of infectious diseases and pandemics [39].\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u0026nbsp;Landfill suitability\u0026nbsp;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe final landfill suitability map was created using Eq. (3), incorporating the MCDA and AHP pairwise comparison matrix results from Table 3. The findings indicate that less than 8% of the area is suitable for landfill, while 89% is designated as restricted, and 3% is deemed moderately suitable.\u003c/p\u003e\n\u003cp\u003e\u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; The final landfill suitability map was created using Eq. (3), incorporating the MCDA and AHP pairwise comparison matrix results from Table 3. The findings indicate that less than 8% of the area is suitable for landfill, while 89% is designated as restricted, and 3% is deemed moderately suitable. According to the city\u0026apos;s master plan for 2051, most plans are in the north and eastern parts, and establishing an education zone is in the city\u0026apos;s southwest. At the same time, the city is currently generating around 160 tons of waste per day, while the population growth of the city is 2.1- 2.2% annually, taking into account a minimum of 20 hectares of land required, while the most suitable would be above 50 hectares in area, taking future needs into account. While superimposing the required criteria, 10 suitable sites are identified, i.e., S1, S2, S3, S4, S5, S6, S7, S8, S9, and S10, as shown in Figure 5; these sites meet the minimum criteria, site S1 to S7 are most suitable as the area is above 50 hectares, while S3 is near existing landfill site located in 15 hectares of land area. The existing landfill site was selected a decade ago, and the region has now transformed into an industrial hub and is densely populated. Thus, this study not only promotes clean and sustainable waste disposal sites but also takes future considerations for waste disposal.\u003c/p\u003e"},{"header":"Conclusion and Recommendation ","content":"\u003cp\u003eThe landfill site suitability map for Alwar City Municipal Corporation is produced using the Geographic Information System (GIS), Multi-Criteria Decision Analysis (MCDA) and Analytical Hierarchy Process (AHP). GIS, MCDA and AHP considered environmental factors (river, soil, forest, aquifers, water body elevation and slope) and socio-economic factors (roads, residential area, land use, and land cover) for finding the most suitable landfill sites. The most suitable sites are located in the eastern and south-eastern parts of the study area, such as S2, S3, S4, S5, S7, etc., and out of the most suitable for the years 2051, S2, S3, S4, and S5. The two sites can be considered from the eastern parts S3 and S5 and the eastern parts S2 and S4 to reduce transportation costs. This research demonstrates the practicality of integrating a multi-disciplinary approach with scientific methods. This integration results in minimal environmental, economic, and public health concerns, a critical issue in developing nations like India. The study approach also aligns with the core objectives of Sustainable Development Goals 11 and 6. It highlights the importance of protecting our environment and public health to achieve sustainable cities and communities, as well as clean water and sanitation.\u003c/p\u003e\n\u003cp\u003eThis study is significant as it enhances the current understanding of selecting appropriate landfill sites in developing countries. Landfill sites should be scientifically selected and accepted by the community. We recommend that local governments enhance their capabilities and infrastructure facilities and integrate GIS and MCDA methods for waste management. This approach helps in more environmentally sustainable, economically viable and socially acceptable landfill selection and utilization.\u003c/p\u003e\n"},{"header":"Declarations","content":"\u003ch2\u003e\u003cstrong\u003eDeclaration of competing interests\u003c/strong\u003e\u003c/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u0026nbsp;\u003c/strong\u003eThe authors declare that they have no financial interests or personal connections that might have influenced the findings presented in this paper.\u003c/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAcknowledgements\u0026nbsp;\u003c/strong\u003e\u003c/h2\u003e\n\u003cp\u003eThe authors express their gratitude to the Alwar Municipal Corporation for supplying all essential information. They extend special appreciation to Dr. Shweta Khandelwal and Dr. C.P. Morya for their unwavering guidance and encouragement throughout this research.\u003c/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFunding\u003c/strong\u003e\u003c/h2\u003e\n\u003cp\u003eThe authors declare that no funds, grants, or other support was received during the preparation of this manuscript.\u003c/p\u003e"},{"header":"References","content":"\u003col\u003e\n\u003cli\u003eJoshi R, Ahmed S. Status and challenges of municipal solid waste management in India: A review. Cogent Environ Sci 2016;2:1139434. https://doi.org/10.1080/23311843.2016.1139434.\u003c/li\u003e\n\u003cli\u003eBeede DN, Bloom DE. THE ECONOMICS OF MUNICIPAL SOLID WASTE. World Bank Res Obs 1995;10:113\u0026ndash;50. https://doi.org/10.1093/wbro/10.2.113.\u003c/li\u003e\n\u003cli\u003eCPCB Annual Report. New Delhi: Central Pollution Control Board; 2022.\u003c/li\u003e\n\u003cli\u003eSrivastava V, Ismail SA, Singh P, Singh RP. Urban solid waste management in the developing world with emphasis on India: challenges and opportunities. Rev Environ Sci Biotechnol 2015;14:317\u0026ndash;37. https://doi.org/10.1007/s11157-014-9352-4.\u003c/li\u003e\n\u003cli\u003eYatoo AM, Hamid B, Sheikh TA, Ali S, Bhat SA, Ramola S, Ali MdN, Baba ZA, Kumar S. Global perspective of municipal solid waste and landfill leachate: generation, composition, eco-toxicity, and sustainable management strategies. Environ Sci Pollut Res 2024;31:23363\u0026ndash;92. https://doi.org/10.1007/s11356-024-32669-4.\u003c/li\u003e\n\u003cli\u003eZambrano-Monserrate MA, Ruano MA, Orme\u0026ntilde;o-Candelario V. Determinants of municipal solid waste: a global analysis by countries\u0026rsquo; income level. Environ Sci Pollut Res 2021;28:62421\u0026ndash;30. https://doi.org/10.1007/s11356-021-15167-9.\u003c/li\u003e\n\u003cli\u003ePal MS, Bhatia M. Current status, topographical constraints, and implementation strategy of municipal solid waste in India: a review. Arab J Geosci 2022;15:1176. https://doi.org/10.1007/s12517-022-10414-w.\u003c/li\u003e\n\u003cli\u003eWilson DC, Velis CA, Rodic L. Integrated sustainable waste management in developing countries. Proc Inst Civ Eng - Waste Resour Manag 2013;166:52\u0026ndash;68. https://doi.org/10.1680/warm.12.00005.\u003c/li\u003e\n\u003cli\u003eGbanie SP, Tengbe PB, Momoh JS, Medo J, Kabba VTS. Modelling landfill location using Geographic Information Systems (GIS) and Multi-Criteria Decision Analysis (MCDA): Case study Bo, Southern Sierra Leone. Appl Geogr 2013;36:3\u0026ndash;12. https://doi.org/10.1016/j.apgeog.2012.06.013.\u003c/li\u003e\n\u003cli\u003eBoj\u0026oacute;rquez-Tapia LA, S\u0026aacute;nchez-Colon S, Florez A. Building Consensus in Environmental Impact Assessment Through Multicriteria Modeling and Sensitivity Analysis. Environ Manage 2005;36:469\u0026ndash;81. https://doi.org/10.1007/s00267-004-0127-5.\u003c/li\u003e\n\u003cli\u003eAsfaw DM, Asnakew YW, Sendkie FB, Workineh EB, Mekonnen BA, Abdulkadr AA, Ali AK. Perceived social, economic, environmental and health effects of solid waste management practices in logia town, afar, ethiopia. Discov Sustain 2024;5:308. https://doi.org/10.1007/s43621-024-00533-7.\u003c/li\u003e\n\u003cli\u003eGallagher L, Ferreira S, Convery F. Host community attitudes towards solid waste landfill infrastructure: comprehension before compensation. J Environ Plan Manag 2008;51:233\u0026ndash;57. https://doi.org/10.1080/09640560701864878.\u003c/li\u003e\n\u003cli\u003eChang N-B, Parvathinathan G, Breeden JB. Combining GIS with fuzzy multicriteria decision-making for landfill siting in a fast-growing urban region. J Environ Manage 2008;87:139\u0026ndash;53. https://doi.org/10.1016/j.jenvman.2007.01.011.\u003c/li\u003e\n\u003cli\u003eDjokanović S, Abolmasov B, Jevremović D. GIS application for landfill site selection: a case study in Pančevo, Serbia. Bull Eng Geol Environ 2016;75:1273\u0026ndash;99. https://doi.org/10.1007/s10064-016-0888-0.\u003c/li\u003e\n\u003cli\u003eKontos TD, Komilis DP, Halvadakis CP. Siting MSW landfills with a spatial multiple criteria analysis methodology. Waste Manag 2005;25:818\u0026ndash;32. https://doi.org/10.1016/j.wasman.2005.04.002.\u003c/li\u003e\n\u003cli\u003eKharat MG, Kamble SJ, Raut RD, Kamble SS, Dhume SM. Modeling landfill site selection using an integrated fuzzy MCDM approach. Model Earth Syst Environ 2016;2:53. https://doi.org/10.1007/s40808-016-0106-x.\u003c/li\u003e\n\u003cli\u003eSumathi VR, Natesan U, Sarkar C. GIS-based approach for optimized siting of municipal solid waste landfill. Waste Manag 2008;28:2146\u0026ndash;60. https://doi.org/10.1016/j.wasman.2007.09.032.\u003c/li\u003e\n\u003cli\u003eYildirim V. Application of raster-based GIS techniques in the siting of landfills in Trabzon Province, Turkey: a case study. Waste Manag Res J Sustain Circ Econ 2012;30:949\u0026ndash;60. https://doi.org/10.1177/0734242X12445656.\u003c/li\u003e\n\u003cli\u003eSuleman HA, Baffoe PE. Selecting Suitable Sites for Mine Waste Dumps Using GIS Techniques at Goldfields, Damang Mine. Ghana Min J 2017;17:9\u0026ndash;17. https://doi.org/10.4314/gm.v17i1.2.\u003c/li\u003e\n\u003cli\u003eBoroushaki S, Malczewski J. Measuring consensus for collaborative decision-making: A GIS-based approach. Comput Environ Urban Syst 2010;34:322\u0026ndash;32. https://doi.org/10.1016/j.compenvurbsys.2010.02.006.\u003c/li\u003e\n\u003cli\u003eAksoy E, San BT. Geographical information systems (GIS) and Multi-Criteria Decision Analysis (MCDA) integration for sustainable landfill site selection considering dynamic data source. Bull Eng Geol Environ 2019;78:779\u0026ndash;91. https://doi.org/10.1007/s10064-017-1135-z.\u003c/li\u003e\n\u003cli\u003eDemesouka O, Vavatsikos A, Anagnostopoulos K. GIS-based multicriteria municipal solid waste landfill suitability analysis: A review of the methodologies performed and criteria implemented. Waste Manag Res J Sustain Circ Econ 2014;32:270\u0026ndash;96. https://doi.org/10.1177/0734242X14526632.\u003c/li\u003e\n\u003cli\u003eMvula RLS, Mundike J, Nguvulu A. Spatial suitability analysis for site selection of municipal solid waste landfill using hybrid GIS and MCDA approach: The case of Kitwe, Zambia. Sci Afr 2023;21:e01885. https://doi.org/10.1016/j.sciaf.2023.e01885.\u003c/li\u003e\n\u003cli\u003eHashemkhani Zolfani S, Yazdani M, Zavadskas EK. An extended stepwise weight assessment ratio analysis (SWARA) method for improving criteria prioritization process. Soft Comput 2018;22:7399\u0026ndash;405. https://doi.org/10.1007/s00500-018-3092-2.\u003c/li\u003e\n\u003cli\u003eAlanbari MA, Al-Ansari N, Jasim HK. GIS and Multicriteria Decision Analysis for Landfill Site Selection in Al-Hashimyah Qadaa. Nat Sci 2014;06:282\u0026ndash;304. https://doi.org/10.4236/ns.2014.65032.\u003c/li\u003e\n\u003cli\u003eAlkaradaghi K, Ali SS, Al-Ansari N, Laue J, Chabuk A. Landfill Site Selection Using MCDM Methods and GIS in the Sulaimaniyah Governorate, Iraq. Sustainability 2019;11:4530. https://doi.org/10.3390/su11174530.\u003c/li\u003e\n\u003cli\u003eAzadeh A, Saberi M, Atashbar NZ, Chang E, Pazhoheshfar P. Z-AHP: A Z-number extension of fuzzy analytical hierarchy process. 2013 7th IEEE Int. Conf. Digit. Ecosyst. Technol. DEST, Menlo Park, CA, USA: IEEE; 2013, p. 141\u0026ndash;7. https://doi.org/10.1109/DEST.2013.6611344.\u003c/li\u003e\n\u003cli\u003eFeizizadeh B, Ghorbanzadeh O. GIS-based Interval Pairwise Comparison Matrices as a Novel Approach for Optimizing an Analytical Hierarchy Process and Multiple Criteria Weighting. GI_Forum 2017;1:27\u0026ndash;35. https://doi.org/10.1553/giscience2017_01_s27.\u003c/li\u003e\n\u003cli\u003eBarton DN, Sundt H, Bustos AA, Fjeldstad H-P, Hedger R, Forseth T, K\u0026ouml;hler B, Aas \u0026Oslash;, Alfredsen K, Madsen AL. Multi-criteria decision analysis in Bayesian networks - Diagnosing ecosystem service trade-offs in a hydropower regulated river. Environ Model Amp Softw 2019;124:104604. https://doi.org/10.1016/j.envsoft.2019.104604.\u003c/li\u003e\n\u003cli\u003eGorsevski PV, Donevska KR, Mitrovski CD, Frizado JP. Integrating multi-criteria evaluation techniques with geographic information systems for landfill site selection: A case study using ordered weighted average. Waste Manag 2012;32:287\u0026ndash;96. https://doi.org/10.1016/j.wasman.2011.09.023.\u003c/li\u003e\n\u003cli\u003eHazarika R, Saikia A. Landfill site suitability analysis using AHP for solid waste management in the Guwahati Metropolitan Area, India. Arab J Geosci 2020;13:1148. https://doi.org/10.1007/s12517-020-06156-2.\u003c/li\u003e\n\u003cli\u003eJain K, Subbaiah YVS. Site Suitability Analysis for Urban Development Using GIS. J Appl Sci 2007;7:2576\u0026ndash;83. https://doi.org/10.3923/jas.2007.2576.2583.\u003c/li\u003e\n\u003cli\u003eJamshidi A, Kazemijahandizi E, Allahgholi L, Monavari SM, Tajziehchi S, Hashemi A, Moshtaghie M, Jamshidi M. Landfill Site Selection: a Basis Toward Achieving Sustainable Waste Management. Pol J Environ Stud 2015;24:1021\u0026ndash;9. https://doi.org/10.15244/pjoes/28641.\u003c/li\u003e\n\u003cli\u003eMushtaq J, Dar AQ, Ahsan N. Spatial-temporal variations and forecasting analysis of municipal solid waste in the mountainous city of north-western Himalayas. SN Appl Sci 2020;2. https://doi.org/10.1007/s42452-020-2975-x.\u003c/li\u003e\n\u003cli\u003eThungngern J, Wijitkosum S, Sriburi T, Sukhsri C. A Review of the Analytical Hierarchy Process (AHP): An Approach to Water Resource Management in Thailand. Appl Environ Res 2015:13\u0026ndash;32. https://doi.org/10.35762/AER.2015.37.3.2.\u003c/li\u003e\n\u003cli\u003eYesilnacar MI, S\u0026uuml;zen ML, Kaya BŞ, Doyuran V. Municipal solid waste landfill site selection for the city of Şanliurfa-Turkey: an example using MCDA integrated with GIS. Int J Digit Earth 2012;5:147\u0026ndash;64. https://doi.org/10.1080/17538947.2011.583993.\u003c/li\u003e\n\u003cli\u003eAnnual Report. New Delhi: Ministry of Housing and Urban Affairs; 2022.\u003c/li\u003e\n\u003cli\u003eGupta N, Gupta R. Solid waste management and sustainable cities in India: the case of Chandigarh. Environ Urban 2015;27:573\u0026ndash;88. https://doi.org/10.1177/0956247815581747.\u003c/li\u003e\n\u003cli\u003eThe Sustainable Development Goals Report. 2024.\u003c/li\u003e\n\u003cli\u003eAQUIFER MAPPING AND GROUND WATER MANAGEMENT Alwar District, Rajasthan. Jaipur: CENTRAL GROUND WATER BOARD MINISTRY OF WATER RESOURCES, RIVER DEVELOPMENT \u0026amp; GANGA REJUVANATION GOVERNMENT OF INDIA WESTERN REGION, JAIPUR; 2013.\u003c/li\u003e\n\u003cli\u003eDirectorate of Census Operations, Rajasthan. Census of India 2011 - Rajasthan - Series 09 - Part XII B - District Census Handbook, Alwar. vol. Part XII B. 2011th ed. Rajasthan: Office of the Registrar General \u0026amp; Census Commissioner, India (ORGI); 2011.\u003c/li\u003e\n\u003cli\u003eFactsheet of industrial emissions in Alwar. New Delhi: Centre for Science and Environment; 2023.\u003c/li\u003e\n\u003cli\u003eRezaeisabzevar Y, Bazargan A, Zohourian B. Landfill site selection using multi criteria decision making: Influential factors for comparing locations. J Environ Sci 2020;93:170\u0026ndash;84. https://doi.org/10.1016/j.jes.2020.02.030.\u003c/li\u003e\n\u003cli\u003eEl Baba M, Kayastha P, De Smedt F. Landfill site selection using multi-criteria evaluation in the GIS interface: a case study from the Gaza Strip, Palestine. Arab J Geosci 2015;8:7499\u0026ndash;513. https://doi.org/10.1007/s12517-014-1736-9.\u003c/li\u003e\n\u003cli\u003ePasalari H, Nodehi RN, Mahvi AH, Yaghmaeian K, Charrahi Z. Landfill site selection using a hybrid system of AHP-Fuzzy in GIS environment: A case study in Shiraz city, Iran. MethodsX 2019;6:1454\u0026ndash;66. https://doi.org/10.1016/j.mex.2019.06.009.\u003c/li\u003e\n\u003cli\u003eElkhrachy I, Alhamami A, Alyami SH. Landfill Site Selection Using Multi-Criteria Decision Analysis, Remote Sensing Data, and Geographic Information System Tools in Najran City, Saudi Arabia. Remote Sens 2023;15:3754. https://doi.org/10.3390/rs15153754.\u003c/li\u003e\n\u003cli\u003eKapilan S, Elangovan K. Potential landfill site selection for solid waste disposal using GIS and multi-criteria decision analysis (MCDA). J Cent South Univ 2018;25:570\u0026ndash;85. https://doi.org/10.1007/s11771-018-3762-3.\u003c/li\u003e\n\u003cli\u003eVasanthi P, Kaliappan S, Srinivasaraghavan R. Impact of poor solid waste management on ground water. Environ Monit Assess 2008;143:227\u0026ndash;38. https://doi.org/10.1007/s10661-007-9971-0.\u003c/li\u003e\n\u003cli\u003eAshraf MA, Yusoff I, Yusof M, Alias Y. Study of contaminant transport at an open-tipping waste disposal site. Environ Sci Pollut Res 2013;20:4689\u0026ndash;710. https://doi.org/10.1007/s11356-012-1423-x.\u003c/li\u003e\n\u003cli\u003eDavies AL, Redpath SM, Bryce R. Use of Multicriteria Decision Analysis to Address Conservation Conflicts. Conserv Biol 2013;27:936\u0026ndash;44. https://doi.org/10.1111/cobi.12090.\u003c/li\u003e\n\u003cli\u003eSaaty TL. The analytic hierarchy process (AHP). vol. 41. 1980.\u003c/li\u003e\n\u003cli\u003eMcIntyre C, Parfitt MK. Decision Support System for Residential Land Development Site Selection Process. J Archit Eng 1998;4:125\u0026ndash;31. https://doi.org/10.1061/(ASCE)1076-0431(1998)4:4(125).\u003c/li\u003e\n\u003cli\u003eKarimi AR, Mehrdadi N, Hashemian SJ, Bidhendi GRN, Moghaddam RT. Selection of wastewater treatment process based on the analytical hierarchy process and fuzzy analytical hierarchy process methods. Int J Environ Sci Technol 2011;8:267\u0026ndash;80. https://doi.org/10.1007/BF03326215.\u003c/li\u003e\n\u003cli\u003eCsat\u0026oacute; L. Characterization of an inconsistency ranking for pairwise comparison matrices. Ann Oper Res 2017;261:155\u0026ndash;65. https://doi.org/10.1007/s10479-017-2627-8.\u003c/li\u003e\n\u003cli\u003eMohd WRW, Abdullah L. Pythagorean fuzzy analytic hierarchy process to multi-criteria decision making. vol. 1905, author; 2017. https://doi.org/10.1063/1.5012208.\u003c/li\u003e\n\u003cli\u003eZhou X, Ishizaka A, Deng Y, Chan FTS, Hu Y. A DEMA℡-based completion method for incomplete pairwise comparison matrix in AHP. Ann Oper Res 2018;271:1045\u0026ndash;66. https://doi.org/10.1007/s10479-018-2769-3.\u003c/li\u003e\n\u003cli\u003eSaaty TL, Vargas LG. Models, Methods, Concepts \u0026amp; Applications of the Analytic Hierarchy Process. Springer; 2012.\u003c/li\u003e\n\u003cli\u003eMalczewski J. On the Use of Weighted Linear Combination Method in GIS: Common and Best Practice Approaches. Trans GIS 2000;4:5\u0026ndash;22. https://doi.org/10.1111/1467-9671.00035.\u003c/li\u003e\n\u003cli\u003eVavatsikos AP, Demesouka OE, Anagnostopoulos KP. GIS-based suitability analysis using fuzzy PROMETHEE. J Environ Plan Manag 2020;63:604\u0026ndash;28. https://doi.org/10.1080/09640568.2019.1599830.\u003c/li\u003e\n\u003c/ol\u003e"}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":true,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":false,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Municipal Solid Waste Management, Landfill Sites Suitability, Geographical Information System, Multi-Criteria Decision Analysis, Analytical Hierarchy Process","lastPublishedDoi":"10.21203/rs.3.rs-6424995/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6424995/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eMunicipal solid waste management (MSWM) is becoming a significant concern both globally and locally. Landfill sites selection is a critical component of MSWM. In various urban areas in India, including Alwar City, the current dump-sites were selected based on land availability rather than land suitability. This study employed Geographic Information Systems (GIS) and multi-criteria decision analysis (MCDA) using the Analytical Hierarchy Process (AHP) to classify the city into zones categorized as most suitable, suitable, moderately suitable, less suitable, and not suitable for landfill site. The findings revealed that 33,915 hectares, constituting 88.92% area, were classified unsuitable, while 3,962 hectares, representing 20.37%, were classified overall suitable. Only 1,257 hectares, representing 3.2% of the total area, were the most suitable for landfill sites. Total 121 potential sites were identified however, only 10 met the minimum size criterion of 20 hectares and aligned with the Alwar City Master Plan 2051. The study also revealed that the existing landfill is located in an area that fall in moderately suitable category. This study also contributes to the existing literature of how to choose landfill sites that are both scientifically and socially acceptable in developing nations. This study focuses on combining MCDA, AHP, and GIS techniques to improve the environmental and socio-economic sustainability of landfill site selection and management, thereby supporting the attainment of Sustainable Development Goals (SDGs) 3, 6, and 11.\u003c/p\u003e","manuscriptTitle":"Integrating GIS and AHP for Optimal Landfill Site Selection: A Case Study of Alwar City, India","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-04-17 04:22:38","doi":"10.21203/rs.3.rs-6424995/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"c1acbcf2-83db-49e5-930a-0943ecae2349","owner":[],"postedDate":"April 17th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2025-04-17T04:22:40+00:00","versionOfRecord":[],"versionCreatedAt":"2025-04-17 04:22:38","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-6424995","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6424995","identity":"rs-6424995","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}

Text is read by the "Ask this paper" AI Q&A widget below. Extraction quality varies by source — PMC NXML preserves structure cleanly, OA-HTML may include some navigation residue, and OA-PDF can have broken hyphenation. The publisher copy (via DOI) is the canonical version.

My notes (saved in your browser only)

Ask this paper AI returns verbatim quotes from the full text · source: preprint-html

Answers must be backed by verbatim quotes from this paper's full text. Hallucinated quotes are dropped automatically; if no verbatim passage answers the question, we say so. How this works

Citation neighborhood (no data yet)

We don't have any in-corpus citations linked to this paper yet. This is a recent paper (2025) — citers typically take a year or two to land, and the OpenAlex reference graph may still be filling in.

Source provenance

europepmc
last seen: 2026-05-20T01:45:00.602351+00:00