ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)最新文献

{"title":"SPATIAL ANALYSIS OF LANDSLIDE POTENTIAL ON AGRICULTURE IN THE AYUNG WATERSHED, BALI PROVINCE","authors":"Feronika Feronika, Takahiro Osawa, I. N. Merit","doi":"10.24843/ejes.2023.v17.i02.p06","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p06","url":null,"abstract":"The Ayung Watershed is one of the watersheds with mountainous and hilly landscapes with potential landslides. This study aims to determine the potential level of landslide susceptibility and its effect on agricultural land use in the Ayung watershed. The method used to determine the potential for landslides is a weighting/scoring method by overlapping the parameters causing landslides, namely rainfall, slope, land use, landform, geological structure, and soil type. Determining the effect of landslide potential on agricultural land is done by overlapping the landslide potential map with land use. The data used includes BMKG monthly rainfall for 2015-2019, the slope of DEMNAS data for 2020, geological structure and landform 1:25,000 scale RBI map data for 2019, land use using Sentinel 2A data for 2020, and soil types in the form of spatial planning maps Province of Bali 1:25,000 scale in 2019. The results showed that landslides in the Ayung watershed were categorized as low potential to high potential. Classes with no landslide potential are widespread in the upstream and downstream areas of the watershed, covering an area of ??18,976.01 ha (60%), the low potential category covering 5,877.78 ha (19%), the medium potential category covering an area of ??3,208.76 ha (10%) and the low potential category covering an area of ??3,208.76 ha (10%) spread over the upstream and central parts of the watershed covering an area of ??3,528.55 ha (11%). The effect of landslides on agricultural land has a category from no potential to high potential. The category with no potential is widespread in the upstream watershed area of ??13,268.57 ha (66%), the low potential category is 3,268.57 ha (16%), the medium potential category is 1,782.31 ha (9%), and the high category is spread in the upstream and the middle of the watershed area of ??1,707.28 ha (9%). \u0000Keywords: Landslide; Watershed; Mapping; Agricultural land","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"46 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138593734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"HUBUNGAN KUALITAS RUANG TERBUKA HIJAU TERHADAP TINGKAT STRES MASYARAKAT PERKOTAAN DI KOTA DENPASAR","authors":"Hubungan Kualitas, Ruang Terbuka, Hijau Terhadap, Ida Bagus Eka, Permana Putra, I. Bagus, E. Putra, Made Adhika, I. Pujaastawa","doi":"10.24843/ejes.2023.v17.i02.p07","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p07","url":null,"abstract":"Urbanization has an impact on increasing the number of residents in urban areas. This increase has led to increasing problems faced by urban communities such as increased traffic jams, air pollution, employment problems and other problems that tend to cause urban society's aggressiveness and stress to increase. One way to reduce stress is to do activities in open green spaces (RTH). This research was conducted to analyze the quality of open green space in Denpasar City, calculate the stress level of the people in Denpasar City, analyze the relationship between the quality of open green space and the stress level of the people of Denpasar City. This research was conducted by collecting information about the quality of open green space through observation and questionnaires at Sewaka Dharma City Park, Puputan Badung Field (I Gusti Ngurah Made Agung), and Niti Mandala Renon Field. The total number of respondents taken was 210 respondents. The stress value is measured using the perceived stress scale score (PSS-10). The results showed that the community had a moderate stress level with an average PSS score of 20.96. As many as 86% of respondents stated that the open green space in Denpasar was clean, 80% of respondents stated that the air quality in open green space was cool, 56% of respondents stated that the placement of vegetation was comfortable, 41% of respondents stated that the smell of waste in open green space was not disturbing, and 60% of respondents stated that the conditions of the facilities in open green space were good. The quality of open green space has a real relationship to the stress level of the people of Denpasar City (p value = 0.037). This research is expected to provide information to the government and the public regarding the use and maintenance of city parks. \u0000Keywords: urban; green space; stress; park","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"45 26","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138594022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DAMPAK PENGEMBANGAN PARIWISATA TERHADAP KONDISI LINGKUNGAN PESISIR DAN STRATEGI PENGEMBANGANNYA DI PANTAI YEH GANGGA, KABUPATEN TABANAN","authors":"Dampak Pengembangan, Pariwisata Terhadap, Gusti Ayu, Manik Pradnyani, M. Mahendra, Wayan Diara","doi":"10.24843/ejes.2023.v17.i02.p11","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p11","url":null,"abstract":"The Tabanan Regency Government has established Yeh Gangga Beach as one of the tourist attractions. Tourism development will certainly have an impact on the physical, social and economic environment of the local community as well as for the tourism area itself. So it is necessary to conduct research on how much tourism impact the physical environment and the social and economic communities on the coast of Yeh Gangga Beach. The method used in this research is mixed, using two types of data, namely quantitative data related to population data and questionnaire results, as well as qualitative data through observation and interview methods related to data on the physical environment and socio-economic conditions of tourism. The analysis method to formulate alternative strategies that can be applied in the development of Yeh Gangga Beach is done by SWOT analysis. Tourism development is in line with the construction of tourism support facilities. There are changes in the coastline in the form of accretion caused by the construction of trails and there are two river mouths large enough to cause sedimentation. The river water quality is still classified as good and has a parameter value that is not much different because it has almost the same water activity. Tourism development on Yeh Gangga Beach has positively impacted the local community’s economy and income, with changes in livelihoods and income. The calculation results of the strength factor obtained a score value of 1.96 and a weakness value score of 0.91 with a score difference of +1.04. then the opportunity factor obtained a score value of 2.01 and a threat value score of 0.66 with a difference of +1.35 so that Positive-Positive (+, +) results were obtained, namely in Quadrant I. This position indicates that internal strengths and environmental conditions support tourism development so strategic recommendations are given by way of internal strengths and environmental conditions that support tourism development. This position indicates that the internal is strong and the environmental conditions support tourism development, SO the strategy recommendations are given by making the most of the strengths and opportunities possessed. \u0000Keywords: Environment, Tourism, Impact, Development Strategy","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"35 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138591660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"OIL SPILL SIMULATION IN THE BALI STRAIT USING THE GNOME AND FVCOM MODELS ON EASTERLY SEASON","authors":"Pande Putu, Hadi Wiguna, Gede Hendrawan, Takahiro Osawa","doi":"10.24843/ejes.2023.v17.i02.p10","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p10","url":null,"abstract":"Among several forms of marine pollution, oil damages coastal ecosystems. Repeated reports of oil contamination in the marine environment can partly load with major shipping lines. The Ketapang-Gilimanuk crossing over the Bali Strait is Indonesia's second busiest ferry port after Merak-Bakauheni. The most congested shipping routes can carry a significant risk of environmental damage from an oil spill. Oil spill trajectory modelling is carried out to reduce the impact of this possible disaster. Therefore, the use of modelling to ascertain the route of the oil spill was considered. The oil leak path is simulated using the GNOME model. Two oil spill scenarios were used as input models. The chosen location is around the Ketapang Gilimanuk crossing, as well as the time of the easterly season. An ocean HF radar stationed in the Bali Strait verifies the accuracy of the current marine data generated by FVCOM. To see the pattern of the oil spill trajectory based on a ten days simulation, we combined the latest data from FVCOM with GNOME. To determine the ability of the model to predict the flow and trajectory of oil spills in the Bali Strait, this study try to analyze and interpret the oil spill trajectory from model and then validate the model results with satellite imagery. \u0000Keywords: Bali strait; oil spill; trajectory; GNOME; FVCOM; HF Radar","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"44 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138593299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IDENTIFIKASI MAKROZOOBENTOS SEBAGAI BIOINDIKATOR KUALITAS PERAIRAN DI PANTAI TELUK BENOA, BADUNG","authors":"Eka Ari Sutrisnawati, Wayan Arthana, I. Bagus, Windia Adnyana","doi":"10.24843/ejes.2023.v17.i02.p05","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p05","url":null,"abstract":"Utilization of coastal waters for aquaculture activities or for other activities provides positive value for human welfare but can also provide the potential for reducing water quality. The decline in environmental quality can be seen from changes in components such as biology, chemistry, and beach physics. Changes in chemical and physical components cause sediment to decrease, which will affect the life of marine biotas, such as the community structure, especially the slow-moving and relatively settled biota on the bottom of the waters (macrozoobenthos). Macrozoobenthos are very appropriate to be used as an indicator of changes in water quality due to their benthic nature which is relatively silent or has low mobility so it is strongly influenced by the environment. The purpose of the study was to determine the structure of the macrozoobenthos community and the condition of seawater quality. There were 25 species of gastropods and 3 other classes. The macrozoobenthos species diversity index on the Benoa Bay Coast showed a moderate level of diversity with the highest value of 2.4576. The uniformity index at each station ranges from 0.0894 – 0.5337. The value of the dominance index ranges between 0.000004-0.7656. Based on the relative abundance, the macrobenthos community is dominated by the Gastropod class. The temperature values ??at each station were relatively the same, ranging from 29.3°C– 30.8°C, and the pH was in accordance with quality standards for macrozoobenthos growth. Some indicators of water quality are still below the quality standard threshold, but the concentration of phosphate (PO4) at all locations is already above the predetermined quality standard of 0.015 mg/L?. \u0000Keyword: Macrozoobenthos; Bioindicator; Benoa Bay; Bali","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"34 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138592437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RETRIEVAL OF SURFACE CURRENT FROM HIMAWARI-8 SEA SURFACE TEMPERATURE DATA AND PARTICLE IMAGE VELOCIMETRY METHOD","authors":"Kadek Setiya, Wati, Takahiro Osawa, Wayan Gede, Astawa Karang","doi":"10.24843/ejes.2023.v17.i02.p08","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p08","url":null,"abstract":"As human activity occurs at the surface, which is influenced by surface currents, understanding surface currents is crucial. Ocean currents are not solely caused by wind, but also of other factors, such as sea surface temperature. To obtain surface current data, BMKG used HF radar installed in several places, including Flores Sea. This location is significant because it has large ports and heavy crossing traffic. This study aims to analyse surface current data retrieve from Himawari-8 SST data by applied PIV algorithm. Using the PIV algorithm, a cross-correlation plane is generated by comparing two identically sized interrogation windows obtained from successive images. On 5 December 2022 in the Flores Sea, Himawari-8 SST data was employed to estimate sea surface currents every 10 minutes. Surface current motion varies widely from image to image. Western areas are dominated by westward currents, while central and eastern areas are dominated by eastward currents during daylight hours, and westward currents during the night. Synoptic wind affects surface current movement during those hours. Validation with observational data from the Labuan Bajo HF radar shows that the V component current estimation is better than the U component current estimation. This is particularly prevalent in the south and in areas close to the KAWA radar HF location. \u0000Keywords: Flores Sea; SST; Himawari-8; PIV; surface current","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"6 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138592657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENILAIAN KAPASITAS DAN PEMANFAATAN GAS METANA DI TPA BAGENDUNG CILEGON, INDONESIA","authors":"Sarah Hasianetara, Ahyahudin Sodri, Lina Tri Mugi Astuti","doi":"10.24843/ejes.2023.v17.i02.p09","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p09","url":null,"abstract":"Cilegon only relies on one final disposal site, namely the Bagendung Landfill, which annually receives up to 24.742,80 tons of waste from the population of Cilegon. This amount has an impact on the amount of waste generated and affects the length of time Bagendung Landfill can operate. The process of degradation of organic waste material at the landfill produces landfill gas which includes methane gas (CH4) and carbon dioxide gas (CO2) thereby contributing to GHG (Green House Gas) emissions. This study aims to analyze the remaining operation time frame of and the production of methane gas produced from the waste disposal process at Bagendung Landfill, also its contribution to GHG emissions. This research was started by surveying to find out the waste generation that goes to the landfill and the remaining land area to receive municipal waste. This study used LandGEM version 3.02 software to calculate methane gas production resulting from the landfill waste degradation process. Due to the predicted waste collected in 2024 reaching 281,984.90 m3, Bagendung Landfill can only be utilized until 2024. The emission impact can be reduced by utilizing 1.527.184,57 m3 of methane gas to produce 1.65 GWh as an alternative to electrical energy which is very helpful in meeting the electricity needs of Cilegon City. This research indicates that Bagendung Landfill will not be able to maintain its capacity as it will be reached one year earlier than designed. Utilizing landfill methane gas increases the environment's quality by avoiding 25.471,47 tCO2eq of GHG emissions. Moreover, it can continue after the landfill is closed. \u0000Keywords: landfill; waste generation; methane gas production; emission","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"2 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138592846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALISIS KANDUNGAN LOGAM BERAT Pb, Cu, Cd, Cr PADA TANAMAN PADI DAN JAGUNG YANG SISTEM PENGAIRANNYA BERASAL DARI SUNGAI BADUNG","authors":"N. Widyasari, I. N. Rai, I. Sila Dharma, Made Sudiana Mahendra","doi":"10.24843/ejes.2023.v17.i02.p01","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p01","url":null,"abstract":"This research aims at identifying the content of heavy metals, namely Pb, Cu, Cd, and Cr in the rice and corn cultivated on the agricultural land of Subak Kerdung, Pemogan Village, South Denpasar District. Rice and corn plants are suspected of having indications of heavy metals due to pollution of the downstream Badung River, which is used as irrigation in Subak Kerdung agricultural land. The analysis of heavy metal contents is conducted on the rice and corn plant organs samples, including roots, stems, leaves, and seeds. The test results show that the organs of rice and corn plants detect the contents of heavy metals Pb, Cu, Cd, and Cr which exceed quality standards. According to the results of analysis tests on organs of the rice plant, the content of heavy metal Pb is detected 21.95 mg/kg; heavy metal Cu 170.42 mg/kg; heavy metals Cd 0.35 mg/kg; and heavy metal Cr 7.03 mg/kg. Meanwhile, the results of analysis test on organs of the corn plant detect the content of heavy metal Pb 16.96 mg/kg; heavy metal Cu 58.16 mg/kg; heavy metal Cd 2.5 mg/kg; and heavy metal Cr 3.16 mg/kg. Therefore, it can be concluded that the content of heavy metals Pb, Cu, Cd, and Cr is more detected in the roots of rice and corn plants, also partially translocated to their stems, leaves, and seeds. Keywords: heavy metals; rice plants; corn plants; Badung rivers","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139244161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mapping of Oldeman Agro-Climatic Zone Based on Climate Hazards Group Infrared Precipitation with Station Database in Southeast Sulawesi","authors":"S. Aldiansyah, Risna Risna","doi":"10.24843/ejes.2023.v17.i02.p02","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p02","url":null,"abstract":"Long climate data information will be very useful for the sustainable agricultural sector in determining physiological processes, growth to plant productivity. The Climate Hazard Group Infrared Precipitation with Station (CHIRPS) data is used as a rainfall database for the latest Oldeman agro-climatic zone mapping in Southeast Sulawesi Province. CHIRPS data for 1981-2021 was processed using the Inverse Distance Weighted and Overlay interpolation methods through the Geographic Information System. The results showed that there were thirteen Oldeman agro-climatic zones in Southeast Sulawesi Province, namely B1 (23,71%), B2 (1,97%), B3 (0,22%), C1 (13,48%), C2 (23,21%), C3 (4,64%), D1 (7,36%), D2 (16,71%), D3 (1,28%), D4 (0,00%), E1 (2,92%), E2 (2,32%), dan E3 (2,18%). Zones B1, B2, and B3 are in the northwest, east, and southeast of the area which are very suitable for cultivating two paddy crops followed by planting various types of secondary crops (palawija) during the dry season. Zones C1, C2, and C3 which stretch from west to east are suitable for one-time planting of paddy and two crops of palawija crops. Zones D1, D2, D3, and D4 are spread from the northwest to the southwest to most areas of Muna Island and Buton Island which are suitable for one short-lived paddy planting and one paddy or palawija crop. The agro-climatic zones E (E1, E2, and E3) in the northwest and southwest are only suitable for one crop of palawija crop, depending on rain. The resulting agro-climate map can be used as a reference for cropping patterns that are suitable for the region of Southeast Sulawesi Province. Keywords: Agro-Climatic; CHIRPS; Oldeman; Southeast Sulawesi","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"3 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139242625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALISIS KELAYAKAN EKONOMI PENGOPERASIAN SISTEM PENYEDIAAN AIR MINUM (SPAM) DI PULAU NUSA PENIDA - KABUPATEN KLUNGKUNG","authors":"Analisis Kelayakan, Ekonomi Pengoperasian, Sistem Penyediaan, Ketut Ariantana, M. Mahendra, Wayan Nuarsa, Wayan Sandi Adnyana, Ni Made, Kastini Adiputri","doi":"10.24843/ejes.2023.v17.i02.p03","DOIUrl":"https://doi.org/10.24843/ejes.2023.v17.i02.p03","url":null,"abstract":"Water is the most basic need for living things, it follows population growth and development activities as in Nusa Penida Island. The water supply on this island comes from SPAM Penida and SPAM Guyangan. The Central and Provincial Governments of Bali provide operational subsidies of more than 7 billion on average. Perumda Panca Mahottama’s services also can’t cover all villages on this island. It means SPAM management is not yet economical, and the service is not optimal. The purpose of this economic feasibility analysis is to determine the economic feasibility of SPAM in terms of Full Cost Recovery and appropriate tariffs so that operational costs are proportional to income. To determine the economic feasibility conditions, a study was conducted to evaluate the value of current tariff (2021). The result is Opex value is bigger than the income value. This results in a NCF value of (-Rp.2,610,621,409.00). The operational cost is IDR.7,164,857,259.00/year with total production 1,530,362.88m3/year. The FCR value obtained was IDR.4,681.80/m3. The average production cost is IDR.2,975.92/m3, which means there will still be a loss in 2021 of IDR1,705.99/m3. Analysis was conducted based on the trial error method with calculation period of 15 years, with 3 different tariff systems, alternative 1, tariff with the same value IDR.4,100/m3 from 2023 to 2036, alternative 2 tariff is IDR.3,500 in 2023 to 2027 increase by IDR.1,000/m3 in 2028 to IDR.4,500/m3 until 2036. Alternative 3 tariff is IDR.3,000/m3 in 2023 increase by IDR.500/m3 in 2024 to 2026 and settled at a rate IDR.4,500/m3 until 2036. Keywords: SPAM; feasibility; economy; tariff","PeriodicalId":207732,"journal":{"name":"ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science)","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139242655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}