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31	Environment, Health, and Safety	ABS-44
Land Use Changes Due to Mining Activities in Penajam Paser Utara Regency, East Kalimantan Province Muhammad Refiansyach Dwiyanto (a), Astrid Damayanti (b*), Tito Latif Indra (b), Muhammad Dimyati (b) a) Bachelor Program of Geography, Universitas Indonesia, Depok City, Indonesia b) Departement of Geography, Universitas Indonesia, Depok City, Indonesia. *astrid.damayanti[at]sci.ui.ac.id Abstract There are coal mines in East Kalimantan Province, one of which is in North Penajam Paser Regency. The existence of a coal mine, resulting in changes in land use around it. The purpose of this study is to identify land use changes in 2009 - 2019 and analyze environmental damage based on the level of erosion. The data required is in the form of land use in 2009 and 2019 which is obtained based on interpretation using Landsat imagery and verification of existing land uses. The images used are Landsat 7 and 8 imagery. To identify land use changes, the data processing method used is pixel based image classification with the supervised maximum likelihood classification technique. The analysis method used is an overlay. The result of this research is a decrease in forest area due to coal mining activities in Penajam Paser Utara Regency. There was an increase in the area of built land, open land and mining areas. The wider the mining area, the higher the level of erosion. Therefore, the environmental damage that occurs will be even greater, such as silting rivers and waterways Keywords: erosion rate, land-use changes, mining activities, Penajam Paser Utara Regency, supervised Share Link | Plain Format | Corresponding Author (Muhammad Refiansyach Dwiyanto)

32	Environment, Health, and Safety	ABS-47
Prediction of Coal Dust Dispersion to Total Suspended Particulate (TSP) Concentration in Ambient Air Quality, Case Study: PLTU Tanjung Jati B Sigit Kurniawan, Haryono Setyo Huboyo, Budi Prasetyo Samadikun Department of Environmental Engineering, Faculty of Engineering, Diponegoro University, Semarang Abstract According to National Medium-Term Development Plan set a target of 35,000 MW in 2019, where in 2016, coal still dominated the power plant^s fuel, which is 62%. For the renewable energy namely gas and oil fuel, the contribution is 17% and 5 % respectively. The fastest rate of consumption is 4,7% per year since 2002, thus by the domination of coal-fired power plant in Indonesia in 2005 with 29.4 million tons of coal consumption, it is projected that there will be an increasement in 2020 with 75 million tons of coal consumption. This condition could lead into generation of coal dust which potentially impact to the ground concentration of TSP in the ambient air quality. Further impact may lead into environmental & social issue in the community residence of surrounding coal-fired power plant (PLTU). Considering the potential impact of coal dust emission from coal stockpile activities, study of prediction Coal dust dispersion which generated from coal handling activities to determine the ground concentration of TSP in is necessary to lead of determination for appropriate mitigating control to reduce the coal dust emission. Therefore, the existence of such power plant will have mutual benefits with surrounding area, especially the community. According to the model prediction result using AERMOD it could be predicted that the emission contribution from the coal stockpiles is reach 100-200 &#956-g/m3. Keywords: coal dust dispersion, air modeling using AERMOD, PLTU Tanjung Jati B Share Link | Plain Format | Corresponding Author (Sigit Kurniawan)

33	Environment, Health, and Safety	ABS-49
Spatial distribution analysis of rice crop productivity using remote sensing approach in Nagrak Sub-district, Sukabumi Regency Yani Rahmanida(a), Iqbal Putut Ash Shidiq(a*), Rokhmatuloh Rokhmatuloh(a), and Supriatna Supriatna(a) a) Department of Geography, Faculty of Mathematics and Natural Sciences, University of Indonesia, 16424, Jawa Barat, Indonesia *iqbalputut[at]sci.ui.ac.id Abstract Rice is a commodity of rice-producing food crops that plays a vital role in the Indonesian economy. For anticipating increased food needs, accurate information about the amount of harvest becomes very important. Information on the number of harvests, one of which can be known by estimating rice productivity. Rice productivity estimation can be monitored by remote sensing. This study used a remote sensing approach by employing satellite imagery from Sentinel-2A sensors to generate vegetation index. This study used NDVI (Normalized Difference Vegetation Index) to determines the age of rice plants and estimate rice productivity. The purpose of this study is to analyze the rice productivity and the spatial distribution of rice crop productivity in the Nagrak Sub-district, Sukabumi Regency. The results of this study is Sentinel 2-A and algorithm could provide rice productivity estimation and know the range of the largest rice productivity is 5.815 to 7.00 tons per hectare, which is widely spread at an altitude of 500-1000 meter above sea level and at a slope of 8 to 15 percent, and at a distance of 0 - 150 meters from the river. Keywords: Rice crop productivity- remote sensing- NDVI- spatial distribution Share Link | Plain Format | Corresponding Author (Yani Rahmanida)

34	Environment, Health, and Safety	ABS-50
Remote sensing-based spatial distribution of rice crop production and varieties in Cidahu sub-district, Sukabumi regency Selvi Lestari (a), Iqbal Putut Ash Shidiq (a*), Rokhmatuloh Rokhmatuloh (a), and Supriatna Supriatna (a) a) Department of Geography, Faculty of Mathematics and Natural Sciences, University of Indonesia, 16424, Jawa Barat, Indonesia *iqbalputut[at]sci.ui.ac.id Abstract Paddy (Oryza Sativa, sp.) is the main food commodity of most Indonesian. Generally, Indonesia has several rice crop varieties, which selectively planted by farmers to increase the value of rice crop production. Recorded in 2019, Cidahu has a relatively high value of paddy rice production of 20,721 tons. One effective way of monitoring rice crops is by utilizing remote sensing technology, both radar and optical imagery. Radar and optical datasets are very potential to be applied in tropical and sub-tropical regions, which are prone to cloud-cover so that the combination of the two complement each other in increasing the accuracy of classification. This study aims to analyze the spatial phenology of paddy, map the distribution patterns of paddy rice varieties, and analyze the spatial patterns of rice crop production using Sentinel-1 and Sentinel-2 imageries in Cidahu sub-district, Sukabumi Regency. The combination of polarization from SAR and vegetation index from optical images are used to determine the planting stages of paddy, which then serves as a guide for the identification of rice varieties. The paddy stages are categorized into land preparation, vegetative, generative, and maturative. The yield from the 3,443 hectares of harvested area is 20,000-21,000 tons per hectare. Keywords: Spatial distribution, remote sensing, Sentinel imageries, vegetation index Share Link | Plain Format | Corresponding Author (Selvi Lestari)

35	Environment, Health, and Safety	ABS-54
The Existence of a Shortcut as an Urban Space System to Support Physic and Mental Health Arnis Rochma Harani, Paramita Atmodiwirjo, Yandi Andri Yatmo, Resza Riskiyanto Universitas Indonesia Abstract This paper aims to investigate the existence of a shortcut as a system for urban space in the everyday environment. A shortcut is a form of connectivity between places in city space. In particular, this paper explores the existence of shortcut as a system of urban spaces that can improve physical and mental health. Health is one of the factors that are considered in current urban design, developing walkability in urban spaces supposed to improve physical health for society. Previous studies developed several forms of walkable urban space and the benefits of physical activity in urban spaces. Meanwhile, the existence of shortcuts in Indonesia is considered as a city space system that can provide added value to health, apart from physical but also mental. Hence, there are social activities that provide a sense of security, a sense of intimacy, belonging to each other so that this affects mental health for the community. This paper argues that the everyday environment brings to develop a broader urban space system. This paper shows a different perspective on the presence of shortcuts can reveal its added value to society. Keywords: shortcut, health, safety, walkability Share Link | Plain Format | Corresponding Author (Arnis Rochma Harani)

36	Environment, Health, and Safety	ABS-55
Prediction of Land Change for Oil Palm Plantations in Penajam Subdistrict, Penajam Paser Utara Regency, East Kalimantan Province Afifah Maulidya (a), Astrid Damayanti (a*), Tito Latif Indra (b), Muhammad Dimyati (b) a) Bachelor Program of Geography, Universitas Indonesia, Depok City, Indonesia *astrid.damayanti[at]sci.ui.ac.id b) Departement of Geography, Faculty of Mathematic and Natural Science, Universitas Indonesia, Depok City, Indonesia Abstract Penajam Subdistrict is the center of government and economy of the North Penajam Paser Regency. It has an area of oil palm plantations that continues to grow every year. The massive growth of oil palm plantations in recent years has resulted in the conversion of agricultural land into oil palm plantations. The land conversion occurs because the results of oil palm plantations are considered more profitable than planting rice. This study aims to analyze and predict changes in land use for oil palm in Penajam Subdistrict in 2031. The method used in this study uses a Geographical Information System (GIS) approach with the CA-Markov prediction model. The drivers of land-use change as input to the CA-Markov model consist of distance from roads, distance from rivers, distance from forest, height, and slope. The results of this research show that there is an increase in oil palm plantation areas in Penajam Subdistrict. Oil palm land changes occur in regions that have the right physical conditions and accessibility. The model shows that the increase in oil palm land area is in line with the rise in the productivity of oil palm land in the Penajam Subdistrict. Keywords: celullar automata-Markov chain- land-use change- oil palm- Penajam Subdistrict- prediction Share Link | Plain Format | Corresponding Author (Afifah Maulidya)

37	Environment, Health, and Safety	ABS-56
Carbon Emission Report: A Review Based on Environmental Performance, Company Age and Corporate Governance Badingatus Solikhah1, Indah Fajarini Sri Wahyuningrum1, Agung Yulianto1, Edi Sarwono2, Anna Kania Widiatami3 Universitas Negeri Semarang Abstract The aim of this research is to explore the practice of carbon emission disclosure in the manufacturing company. This paper also examines the factors that influence the disclosure of carbon emissions. The factors tested are environmental performance, company age, managerial ownership, institutional ownership and the proportion of independent commissioners. This study uses a sample of 40 manufacturing companies listed on the Indonesia Stock Exchange in 2012-2015. The data analysis methods included were descriptive statistical analysis and panel data regression analysis. The level of carbon emission disclosure in manufacturing companies in Indonesia is in the low category. This means that companies are less concerned about environmental reporting problems. The results of this study indicate that company age, institutional ownership, and independent commissioners have a positive effect on disclosure of carbon emissions, while environmental performance and managerial ownership have no effect on disclosure of carbon emissions Keywords: Carbon Emission Disclosure, Environmental Performance, Managerial Ownership, Institutional Ownership, Independent Commissioners, Panel Data Regression. Share Link | Plain Format | Corresponding Author (Edi Sarwono)

38	Environment, Health, and Safety	ABS-63
Persistence of Carbaryl Pesticide in Environment Using System Dynamics Model Astried Sunaryani(1) and Raden Tina Rosmalina(2) (1)Research Center for Limnology, Indonesian Institute of Sciences (LIPI), Cibinong 16911, Indonesia. (2)Research Unit for Clean Technology, Indonesian Institute of Sciences (LIPI), Bandung 40135, Indonesia Abstract Carbaryl, one of carbamate insecticides are used extensively for pest control in agriculture. The chemical is highly valued for its rapid action and relatively short environmental persistence. Because of its widespread and intensive use, residues of carbaryl have the potential to contaminate environment. This study aims to formulate a system dynamics model to simulate a degradation process of carbaryl. Since carbaryl was not readily volatilize, this study only estimates the concentration and degradation of carbaryl in soil and water. The result revealed that carbaryl degraded rapidly, with half-life of 7 days in soil and 2 days in water. Model was validated with a laboratory experiment using solid phase extraction reversed-phase high-performance liquid chromatography for determination of carbaryl concentration. With 12.82 % of percentage error compared to experimental value indicated that the prediction of developed model was acceptable and the model can be used to estimate the presence of carbaryl pesticide in soil and water. Findings from this study can be used for assessing the fate and also the impact of carbaryl pesticide in the environment. Keywords: system dynamics model, carbaryl, carbamates, pesticides in environment Share Link | Plain Format | Corresponding Author (Astried Sunaryani)

39	Environment, Health, and Safety	ABS-66
Environmental Dimension of Pandemic Covid-19: Case Studies of Indonesia Sudharto P Hadi1,2, Mohd Hairy Ibrahim3, Bulan Prabawani4, and Rizkiana S. Hamdani5 Faculty of Social and Political Faculty and Graduate Program of Environmental Studies, Diponegoro University, Semarang, Indonesia- Graduate Program of Environmental Science, School of Postgraduate Universitas Diponegoro, Indonesia -Faculty of Human Sciences, Universiti Pendidikan Sultan Idris, Perak Malaysia Abstract Pandemic covid-19 adversely affects all aspects of live. Industries and transportation reduce its activities causing decline of demand for logistics significantly. In Indonesia, 2,8 people predicted will be laid off, 2,9-5,2 million people loss of job, unemployment will increase to 7,5%, poverty increase to 27,5 million people (10,2%), economic growth minus 5,32%. On the other side, air quality index decreased from 155 at the end of March to 69 in April. The indicator of air quality (PM 2,5) decreased from 63,4 ug/ m3 to be 20,8 ug/m3. However, there have been increased at the amount of medical waste and energy consumption. This research aims to identify the impacts of pandemic covid-19 to the environment and the commitment of the government to deal with climate change related to SDGs. The result of research shows that the new normal increases the number of people infected by covid-19 significantly. The commitment of the government dealing with the climate change is decreased due to the policy to refocus and reallocate the budget to deal with pandemic covid-19. It is required to make a balance between health aspect and economic aspect for the sustainability of nation and people^s lives. Keywords: pandemic COVID-19- environmental impacts, sustainable development goals- Share Link | Plain Format | Corresponding Author (Sudharto P. Hadi)

40	Environment, Health, and Safety	ABS-67
Analysis of River Water Quality and Pollution Control Strategies in the Upper Citarum River Annida Ferani Ramadhiani (a*), Suharyanto (a) a) Department of Environmental Engineering, Institut Teknologi Bandung, Jalan Ganeca 10, Bandung 40132, Indonesa *annida.ferani[at]gmail.com Abstract Utilization of the Citarum River varies greatly from household needs, agriculture, livestock to the industrial sector. However, these activities caused pollution along the Citarum River. The main objective of this research is to evaluate the quality of surface water in the upstream Citarum River based on Government Regulation No. 82 of 2001 and its pollution control recommendations. The observed river study area was 80 km long. River water quality is measured and observed at 8 sampling points. Analysis of water quality was carried out using the Pollution Index (IP) method. Meanwhile, the formulation of the pollution control strategy used SWOT analysis. Based on field measurements for parameters BOD, COD, and DO in the upstream segment of the Citarum River have exceeded the quality standard for class II Regulation No. 82 of 2001 in almost all sampling locations. Meanwhile, the results of the IP value at all sampling locations were in the range of 1.23 - 5.8 or in mild to moderate polluted status. Recommendations given to control water pollution are to increase monitoring of wastewater disposal into rivers, carry out an inventory and identification of water pollution sources, and determine the carrying capacity of pollution loads. Keywords: Citarum River, pollution index, quality standard, water quality Share Link | Plain Format | Corresponding Author (Annida Ferani Ramadhiani)

41	Environment, Health, and Safety	ABS-70
Electrodeposition for Rapid Recovery of Cobalt (II) in Industrial Wastewater Holisha Widiyanto(a*), Widya Ernayati Kosimaningrum(b), Rahmayetty(b) a)Graduate School of Chemical Engineering, Postgraduate Program University of Sultan Ageng Tirtayasa Jl. Raya Jakarta Km.4 Pakupatan, Serang, 42122, Indonesia Abstract Cobalt (II) recovery from wastewater opens the opportunity for sustainability and green process. Herein, cobalt(II) was recovered from the aqueous solution by electrochemical cell method, so called electrodeposition. Cobalt electrodeposition from the solution was conducted in the electrochemical cell using a graphite anode and a stainless-steel cathode by varying current (0.25, 0.5, 0.75, 1 and 1.25 A), pH (2, 3, 4, 5, and 6),and cobalt concentration (10, 20, 30, and 50 ppm). Monitoring of all cobalt concentration changes were using ICP AES spectrophotometer. Electrodeposition at various applied current has been removed 99.81% of cobalt from the solution in 20 minutes. Prolonging electrodeposition up to 25 minutes has removed 100% cobalt in the solution. Electrodeposition was also found useful at acidic to neutral pH by removal efficiency 99.37% in 20 minutes of the process. Cobalt in various concentration solutions can be removed 99.54% by applying a current of 0.25 A for 20 minutes. The SEM image reveals the deposited cobalt on graphite anode,resulted in from 10 ppm cobalt solution,as nanocube particles.The EDX spectrum also confirmed the presence of the deposited cobalt on graphite anode.The conclusion is that the cobalt recovery process from PTA plant wastewater is feasible to be further developed. Keywords: electrodeposition, cobalt (II), industrial wastewater Share Link | Plain Format | Corresponding Author (Holisha Widiyanto)

42	Environment, Health, and Safety	ABS-72
Potential and Control Method of Bioaerosol Emission at Composting Process in TPST Diponegoro University Haryono Setiyo Huboyo, Mochtar Hadiwidodo, Bimastyaji Surya Ramadan, Renanda Dennyarto Environmental Engineering Diponegoro University Abstract Laboratories in university environments particularly related to biological process have the potential to emit bioaerosol. This include composting process where numerous microbes actively involved in the process. This study is aimed at analyzing the potential bioaerosol emissions from the composting process at TPST and proposing efforts to reduce emissions toward outside the lab room. To calculate the emission potential of bioaerosol, specific emission factors from the literature are used. The dimensions of the composting reactor size determine the amount of emission and dispersion. The room dimensions for composting are 2.46 x 1.38 x 0.7 m, and there are 18 spaces for the composting process. The measured dust concentration in the composting room were on average above the ambient air quality standard for TSP (230 ug/m3). Hypotetically, emissions from the composting process at TPST reach a highest point of 4x106 CFU / m3, peak at a distance of 7 m from the source of the composting process. However, the health risks associated with bioaerosol emissions are relatively small because the period of exposure to TPST operators near the composting area is quite small. Control efforts by installing a windbreak fence can minimize the amount of emissions that leave the composting area by 80%. Keywords: air pollution, emission, dispersion, health, solid waste Share Link | Plain Format | Corresponding Author (HARYONO SETIYO HUBOYO)

43	Environment, Health, and Safety	ABS-76
Escalating the small-sized community green spaces^ role as the carbon storage in costal town Intan Nurul Aini (a*), Hayati Sari Hasibuan (a), Tarsoen Waryono (b) a) School of Environmental Science University of Indonesia Central Jakarta, Special Capital Region of Jakarta *intan.nurul81[at]alumni.ui.ac.id b) Department of Geography, Faculty of Mathematics and Natural Sciences, University of Indonesia, Depok, West Java Abstract The community green space type is well-known as a public place with the prominent aesthetic value whereas this green space type is also potential to have the prominent ecological value because of the vegetation cover. This study was estimated the above-ground biomass and carbon stock of each tree species within the community green spaces in both coastal and terrestrial habitat to select some potential species to be more developed within both community green spaces in order to escalate the ecological value of the green spaces (carbon storage in a town area). All woody plants with diameter at breast height (dbh) &#8805- 20 cm were identified by census method within 3 sampling plots in both Laman Boenda Park (Site 1) and Pamedan Ahmad Yani Park (Site 2). This study found that the tree community in Site 2 stores higher amount of carbon stock (15,433 kg/ha) than in Site 1 (1,744 kg/ha). The number of individual trees is the main driving factor of the amount of carbon stock in both sites. Some species from Lauraceae, Fabaceae, and Meliaceae that are extremely tolerant of small mineral content soils, salinity, and lack of water content should be more developed in Site 1, specifically. Keywords: Coastal, carbon, community, green spaces, tree Share Link | Plain Format | Corresponding Author (Intan Nurul Aini)

44	Environment, Health, and Safety	ABS-78
Potential health risk of heavy metals pollution in the downstream of Citarum river Siti Shara (a), Setyo Sarwanto Moersidik (a*), Tri Edhi Budhi Soesilo (a) (a) Environmental Science Study Program, School of Environmental Science, Universitas Indonesia, Jakarta, 10340, Indonesia *ssarwanto[at]eng.ui.ac.id Abstract The Citarum River is the most polluted river in the world. Heavy metals such as Zn, Cd, Cr, Mn and Fe are abundant in the environment and have a major impact on the environment due to their resilience in the environment and their potential for toxicity and ecotoxicity and will disturb the sustainability and balance of the ecosystem. This is a major issue of concern in environmental science studies. This paper has investigated the potential risk of heavy metals to human health from various components that pollute water by conducting literature studies. So that the impact of heavy metal pollution on rivers can be known as a reference in the management of pollution in the Citarum watershed. We found that heavy metals can contaminate the food chain and then become a source of toxins for humans. In addition, people can be exposed to heavy metal contaminated water. The risk of heavy metal poisoning depends on the amount of the dose that enters the body. Meanwhile, the dose increases with the concentration, duration and frequency of exposure and the way it enters the body. Meanwhile, the greater the exposure to heavy metals, the greater the risk of poisoning. Keywords: Citarum river- Health risk- Heavy metal- Water pollution Share Link | Plain Format | Corresponding Author (Siti Shara)

45	Environment, Health, and Safety	ABS-86
Agroforestry Potential in CDK IX^s Assisted Areas of the Central Java Environment and Forestry Agency 1 Bulan Prabawani, 2 Hardi Warsono, 1 Reni Shinta Dewi, 3 Nurul Hapsari 1 Business Administration, 2 Public Policy Programs of Diponegoro University, 3 University of 17 August 1945, Jl. Prof. Soedarto, SH Tembalang Semarang, Indonesia 50275 bulan[at]live.undip.ac.id Abstract Agroforestry is a form of sustainable farming that human needs, especially food, are met without jeopardizing the fulfillment of future needs. Agroforestry is an urgent need, especially in highland areas in Central Java, which choose monoculture agriculture with high economic benefits but has the potential to damage the environment and endanger the ecosystem. Since 2017, the Government through the Regional Forestry Service Branch Office IX (CDK Wilayah IX) has provided guidance to farming communities in the Districts of Magelang and Temanggung, however, the output from agroforestry cannot be measured economically since the age of the plant was only 3 years old. Using in-depth interviews and field observations, this study found that the CDK IX farming community has implemented agrosilvopastoral farming that there are arrangements for cropping and spacing patterns also agricultural support livestock. In addition, there is a pattern of spatial alternate rows that the planting rows were arranged. The potential for success of agroforestry in this region was identified due to the support of government development through field extension workers, local leadership, and local wisdom. However, there were problems of low community participation, low education, and knowledge, also seeds acceptance from donors that were not in the planting period. Keywords: agroforestry- government support- local leadership- local wisdom Share Link | Plain Format | Corresponding Author (Bulan Prabawani)

46	Environment, Health, and Safety	ABS-91
Inventory of Old Buildings and Land Subsidence in Semarang Old Colonial City R. Siti Rukayah, Agung Budi Sardjono, Muhammad Abdullah, A Malik A Aziz 1Architecture and Urban Planning PhD Program, Architecture Department, Diponegoro University 2 Architecture Department, Engineering Faculty, Diponegoro University 3 Indonesian Literature, Diponegoro University 4 Architecture Department, Engineering Faculty, Diponegoro University Abstract There have been many researches on the conservation efforts of historical cities. The building inventory stage is the first step in conservation efforts to protect buildings from the past in order to have benefits in the present. This paper provides some data on buildings that undergo land subsidence in historical areas. Semarang Old City is a historical area built by the Colonial government in the 17th century. After nearly 320 years, some of these buildings have been damaged. This research, which focuses on buildings damaged by land subsidence will collect data from 245 existing buildings in 40 ha area. The approach method uses historical buildings, photos of old buildings, and field surveys. Several old buildings have been detected to be decreased in height due to land subsidence. This can be seen by comparing photos of old buildings from the past and the present. The research analysis uses sketches and photoshop to provide information on how much the height is decreased visually. This inventory results will be able to give advice to the government regarding the appropriate conservation actions to take in an area experiencing land subsidence. This research will also help preserve buildings and environment according to current and future needs in order to preserve their cultural meaning. Keywords: Old City, Semarang, historical area, subsidence, conservation Share Link | Plain Format | Corresponding Author (R Siti Rukayah)

47	Environment, Health, and Safety	ABS-92
Measuring land subsidence of buildings in Semarang Chinatown R. Siti Rukayah, Agung Budi Sardjono, Muhammad Abdullah, Rahmania Yulichandra 1)Architecture and Urban Planning PhD Program, Architecture Department, Diponegoro University 2)Architecture Department, Engineering Faculty, Diponegoro University 3)Indonesian Literature, Diponegoro University 4) Alumni of English Literature, Humanity Faculty, Diponegoro University Abstract There are not many studies that discuss land subsidence and try to measure it in historic areas. This paper will take an inventory of historical areas that have existed since the early growth of cities such as Semarang Chinatown, which has existed since the 17th century. This paper is part of the results of research on land subsidence in coastal cities in Java, which have left many historical areas. Semarang City is one of the case studies because it has a high land subsidence rate of around 20 cm/year in the North Semarang area. Indeed, this area in the past was an ocean. However, due to sedimentation, on the old 1700s map, this area has become a marsh. After becoming mainland, several historical areas stood on young alluvial land. The purpose of this paper is to make an inventory of old buildings in the historic area of Chinatown. On the map from 1695 to now, after 305 years, the area has experienced land subsidence, which can be seen visually in several buildings. The research method used old photos, old maps, and field surveys by taking samples of several old residences that still exist. To strengthen the data, the use of Google street view is very helpful in seeing conditions in the field. The recommendation of this research is to provide directions for an inventory of the list of buildings that need to be conserved due to the hazard of subsidence, which is currently not being felt by the local community. Keywords: inventory, land subsidence, old buildings, Semarang Chinatown Share Link | Plain Format | Corresponding Author (R Siti Rukayah)

48	Environment, Health, and Safety	ABS-95
Challenge of Integrated Low-Cost Emission Monitoring System into Digital Information System Ali Murtopo Simbolon a), Januar Arif Fatkhurrahman b), Ikha Rasti Julia Sari c), Adelina Mariani S d), Syafruddin e), Sudarno f) a) Environmental Engineering, Diponegoro University b) Environmental Engineering, Bandung Institute of Technology c*) Center of Pollution Prevention Technology (CIPPT) * Ki Mangunsarkoro No. 6 Semarang ikha.rasti[at]gmail.com d) Education Management, State University of Semarang e, f) Faculty of Engineering, Diponegoro University Abstract The emission from industry has become a major problem in Indonesia. Usually, industry use accredited testing laboratory to conduct emission test so they can report it as environmental performance for their process, while this testing was accurate, but it can not visualize whole time emission from one process. This year, the Covid-19 pandemic also gain some difficulties in environmental evaluation in the industry include emission performance evaluation. Some big companies may have expensive continuous emission monitoring that can substitute manual laboratory testing, some other, the small and medium scale industry did not have this system. There is a possible development of an integrated low-cost emission monitoring system in the small-medium scale industry since the low-cost gas sensor rapidly develops and getting more accurate. An engineering scenario of integrating low-cost emission monitoring systems into digital information systems could be developed under some challenges, instrumentation, calibration, and regulative support. By applying this scenario periodical emission concentration can be evaluated periodically to support air quality management policy. Keywords: electrochemical sensor, low cost, covid19, emission monitoring Share Link | Plain Format | Corresponding Author (Ali Murtopo Simbolon)

49	Environment, Health, and Safety	ABS-98
A Spatial Study of Rubber Plant Health Using Sentinel 2-A Imagery in Cibungur Plantation, Sukabumi, West Java Tinezia Riyantika Putri (a*), S. Supriatna (b*) a) Bachelor Program of Geography, Universitas Indonesia, Depok City, Indonesia. *tineziariyantika[at]gmail.com b) Departement of Geography, Universitas Indonesia, Depok City, Indonesia. *ysupri[at]sci.ui.ac.id Abstract Rubber plants are one of the plantation commodities which occupy an important position as a source of non-oil and gas foreign exchange for Indonesia. Rubber production is currently experiencing a decline due to reduced productivity in rubber plantations. Rubber plantation problems related to land resources require effective and efficient technological input to determine the health of rubber plants so that they can increase rubber production. Remote sensing technology is one input that can be used as a decision maker to decide problems spatially and quickly, accurately, and dynamically. This study aims to determine the health condition of rubber plants in Cibungur Plantation, Sukabumi, West Java by using high-resolution satellite imagery, namely Sentinel 2-A images processed using the NDVI (Normalized Difference Vegetation Index) method in monitoring the spatial health of rubber plants. The results of this study indicate that the level of distribution of NDVI values in Cibungur Plantation is quite high and rubber plants with very good health conditions have the largest area of 5,365.98 hectares. The NDVI method and Sentinel 2-A image processing used in this study can be used to determine the health of rubber plants in Cibungur Plantation. Keywords: NDVI, Plant health, Rubber plants, Sentinel 2-A Imagery Share Link | Plain Format | Corresponding Author (Tinezia Riyantika Putri)

50	Environment, Health, and Safety	ABS-101
Land Cover Change Modelling to Identify Critical Land in Ciletuh Geopark Tourism Area, Palabuhanratu, Sukabumi Regency. Rizky Amellia Putri and S. Supriatna Departement of Geography, Faculty of Mathematic and Natural Sciences, Universitas Indonesia. Abstract Ciletuh Geopark is one of the tourist attractions that recognized by UNESCO as one of the Global Geopark located in Sukabumi Regency, West Java, which is one of the most visited tourist destinations because of its beauty and role of knowledge development. It caused Geopark Ciletuh got significant growth in facilities and accessibility aspect which generate land cover change that triggers the critical land. This study aims to analyze the land cover change in Ciletuh Geopark until 2030 to identify critical land. The method that used in this study is Cellular Automata-Markov Chain to detect land cover change and predict its change in future with several driving factor which build based on fuzzy logic, and the variable contains proximity to the road, the settlement, the coastline, slope, and population density. Land cover map obtained processing Landsat 7 ETM+ and Landsat 8 OLI/TIRS 2010, 2015, and 2020. The results of this study prove that land cover changes are mainly due to the need for housing and facilities to support tourism activities. This research had expected to become a medium that will move the government and local people to make the land had used well, and still be the sustainable global geopark. Keywords: Cellular Automata-Markov Chain, Landcover Change, Critical Land Share Link | Plain Format | Corresponding Author (Rizky Amellia Putri)

51	Environment, Health, and Safety	ABS-103
Estuary Zone Based on Sea Level Salinity in Ciletuh Bay, West Java Dennisa Maghffira Tunjung, S. Supriatna, Iqbal Putut Ash Shidiq Department of Geography, Faculty Mathematics & Natural Sciences, University of Indonesia Abstract The Estuary area is an area where there is a mixture of seawater with fresh water from the mainland. This estuary area is unique because the mixing of seawater with freshwater causes the formation of brackish water with fluctuating salinity. The fluctuation in salinity is influenced by the depth and shape of the water bed and the season. This study aims to analyze the estuary area (zone) in Ciletuh Bay, West Java based on the rainy and dry seasons associated with bathymetry. The salinity value is obtained from Sentinel-2A image processing, using the calculation of the salinity estimator algorithm, namely the Cilamaya Algorithm. The results showed that the mapping of the distribution of salinity forms the boundaries of the estuary, and the variables of rainfall and bathymetry affect the distribution of salinity values. The shallower the water, the lower the salinity level. Conversely, the deeper the waters, the higher the salinity level. This is due to the influence of the entry of freshwater into the sea, which is also related to the influence of rainfall (season), thus affecting fluctuations between saltwater and freshwater. Keywords: Algorithm- Bathymetry- Estuary- Salinity- Sentinel-2A- Zoning Share Link | Plain Format | Corresponding Author (Dennisa Maghffira Tunjung)

52	Environment, Health, and Safety	ABS-104
Spatial Modeling For Prediction Agricultural Land Use Change in Jampang Kulon, Sukabumi Regency Audry Difanty, S. Supriatna Department of Geography, Faculty of Mathematics & Natural Sciences, Universitas Indonesia. Abstract Indonesia is a developing country with high population growth. In terms of urbanization, a large amount of agricultural land has been transformed into an urban area that can directly lead to LULC (land use-land cover) changes. Understanding and accessing LULC changes mainly used simulation models like the Cellular Automata and Markov Chain. This model effectively combines the advantages of long-term predictions and can simulate land use change. This study aims to analyze and predict the future scenarios of LULC (2010-2031) in the Jampang Kulon Sub District using Cellular Automata and Markov Chain model by considering the physical and socio-economic drivers of LULC dynamics. The study revealed that agricultural land decreased by 17% from 2020 to 2031. Meanwhile, the neighborhood area will be increased by 41% from 2020 to 2031. The growth of neighborhood areas with a crowded pattern is in the northern and center part of Jampang Kulon Sub District. The CA-Markov model used in predicting LULC produced a kappa value of 0,87. This study can provide suggestions and a basis for urban development planning in Jampang Kulon Sub District Sukabumi Regency. Keywords: Agricultural Land, Cellular Automata, Markov Chain, Modelling, LULC. Share Link | Plain Format | Corresponding Author (Audry Difanty)

53	Environment, Health, and Safety	ABS-108
Implementation of the Kampung KB Program (Main Ktriteria Targets) in the context of population control in Central Java Dwi Utami Setyoningrum*1, Y. Warella *2 and Tri Yuniningsih*3 1)Faculty of Social and Political Sciences, Universitas Diponegoro, Semarang, Indonesia 2)Faculty of Social and Political Sciences, Universitas Diponegoro, Semarang, Indonesia 3)Faculty of Social and Political Sciences, Universitas Diponegoro, Semarang, Indonesia Abstract Indonesia has experienced changes in various aspects due to the increasingly complex dynamics of the times. One of the triggers is related to the issue of the demographic bonus that is being experienced. The population of productive age is greater than that of non-productive age. This means that population growth will also increase. This is a problem that must be quickly resolved. The government already has a population control program which is included in the Family Planning Program (KB). In order to accelerate the population control mechanism, the government launched the Kampung KB program to more effectively reach out to the community. In Central Java Province, the Kampung KB program is strengthened by the existence of Central Java Governor Regulation Number 77 of 2017. This study uses a qualitative descriptive method. The purpose of this study was to describe and analyze the inhibiting factors in the implementation of KB Kampung in Central Java Province. The results showed that in general the implementation of the Kampung KB policy was going well. However, there are several aspects that have not been maximally achieved, namely the decrease in the number of fertile aged couples who use contraceptives and there are still cases of failure to install contraceptives. This is a factor in the low level of contraceptive use and the unmetneed family planning in Central Java. Keywords: Family planning- Kampung KB- unmetneed Share Link | Plain Format | Corresponding Author (Dwi Utami Setyoningrum)

54	Environment, Health, and Safety	ABS-109
Spatial Assessment Of Rubber Plant Health Using UAV (Unmanned Aerial Vehicle) Imagery In Cibungur Plantation, Sukabumi, West Java Cipta Setiana (a*), S. Supriatna (b) Department of Geography, Faculty of Mathematics & Natural Sciences, University Of Indonesia. UI Campus, Depok, 16424 West Java, Indonesia. Abstract Rubber is one of the plantation commodities that is promising for the next 20-30 years. The problem of rubber plantations in Indonesia related to land resources requires effective and efficient technological input. This must be pursued to maintain the sustainability of rubber production and health. Remote sensing technology is an input that can be used as a decision maker to decide problems spatially and is fast, accurate, and dynamic. Airborne remote sensing platforms, especially the Unmanned Aerial Vehicle (UAV) are used to map the distribution of rubber plant health. Several vegetation indices, which come from the RGB (red, green, blue) band, namely NDVI (Normalized Difference Vegetation Index). This study aims to analyze the level of distribution of NDVI values, distribution of rubber plant health, and the relationship between NDVI values and the health of rubber plants. Keywords: Rubber Plants- Plant Health- UAV- Vegetation Index- NDVI Share Link | Plain Format | Corresponding Author (Cipta Setiana)

55	Environment, Health, and Safety	ABS-119
Low-Income Households Sustainability based on Ecological Perspective at Villa Karangsari Kebumen, Indonesia Wiwit Nurul Aini, S Sunarti, Landung Esariti Departement of Urban and Regional Planning Engineering Faculty, Universitas Diponegoro Abstract The research aims to examine the ecological sustainability of low-income households (MBR) at Villa Karangsari. It is because majority of the houses have not used energy efficiently for residents, as evidenced by waste management activities, electricity, and clean water energy savings, and fuel savings to reduce pollution in the housing environment. The quantitative approach is used, with observations and questionnaires distributed to 80 respondents. Results show that low-income households could be more sustainable by creating a healthy residential environment (include lighting, air circulation, greening, and pollution-free) and efficient in using daily energy (at the stage of saving energy, not yet processing water and waste management). It is depicted that as many as 87.5% or almost all residents stated that their houses were equipped with adequate lighting sources. In the aspect of air circulation and greening, as many as 76.25% of residents stated that their house has adequate air circulation and there is greenery around the house. 92.5% of populations mentioned that their house is free from sources of disease and potential pollution. This suggests that sustainability is not only affected by good environmental quality but also assessed from the community^s perspective. Keywords: Sustainability, Low-income Household, Ecology, Housing Share Link | Plain Format | Corresponding Author (Landung Esariti)

56	Environment, Health, and Safety	ABS-126
Framework of Governance Resilience Toward Waste Management During Covid-19 Pandemic in Indonesia Maryono (*), Agus Juneadi, and M. Arief Budihardjo Center for Green Infrastructure Resilience and Development, Diponegoro University *maryono[at]pwk.undip.ac.id Abstract The emergence of the Covid-19 pandemic was responded to by issuing a circular letter from the minister of environment SE.2/MENLHK/PSLB3/PLB/3/2020. This study provides a basic conception of the basic framework for solid waste management resilience during the pandemic in Indonesia. The study found that in general, the basic framework for waste management during a pandemic is as follows: handling household waste needs to pay attention to infectious waste, infectious waste must be managed based on the provisions of hazardous waste management, and handholding household waste needs to pay attention to health protocols. Keywords: Governance resilience, waste management, during covid-19 pandemic Share Link | Plain Format | Corresponding Author (Maryono Maryono)

57	Environment, Health, and Safety	ABS-129
Increasing Environmental Comfort by using Insect Trap Windows Connected to DC High Voltage Source Abdul Syakur, Hadha Afrisal, Ariffudin Jatmika, Yosua H. Saragi Department of Electrical Engineering, Faculty of Engineering, University of Diponegoro. Jln. Prof. Sudarto SH, Tembalang, Semarang, Indonesia Abstract A healthy and comfortable environment in coastal areas is a necessity for modern society, at a time when conditions are increasing air and water pollutions. Humid conditions in some rooms in parts of the house are caused by closed rooms and lack of air circulation. On the other hand, when the windows of the house are opened to allow air flow, many insects such as mosquitoes will also enter the room. These mosquitoes are often annoying at rest and can even cause disease. Therefore it is necessary to have a solution to this problem. This paper presents design of window connected to DC high voltage power source. The source of electricity is obtained from PLN 220 Volt. The voltage from PLN is increased to reach 3240 volts. The principle works, when a mosquito breaks through the window, it will experience a short circuit, because the mosquito body is connected between negative and positive. The test results showed that the applied voltage of 14.6 kV was able to sting a mosquito to death. To prevent accidents from this high voltage, when not in use, the power source can be turned off by wireless control. Keywords: Insect Trap, DC voltage, Wireless controlled window Share Link | Plain Format | Corresponding Author (Abdul Syakur)

58	Environment, Health, and Safety	ABS-130
Brief Overview on Corrosion Behaviour of Buried Structure at Kariangau Industrial Complex Rifqi Aulia Tanjung (a*), Ade Wahyu Yusariarta PP (a), Marita Wulandari (b), Muhammad Gunawan Darma (a) a)Departement of Material and Metallurgy Engineering, Institut Teknologi Kalimantan, Balikpapan (76127), Indonesia *rifqi.aulia[at]lecturer.itk.ac.id b)Departement of Environmental Engineering, Institut Teknologi Kalimantan, Balikpapan (76127), Indonesia Abstract Kariangau industrial complex (KIK) is an industrial area located in Balikpapan. Many establishments in KIK are companies providing support for the mining, oil and gas industry. Indeed, for KIK to expand, the companies will build infrastructure both above and underground. For underground structure, either it is a pipeline installation, structural foundation, or buried structure, all will be at risk to degrade by corrosion. This study aims to provide a brief overview of corrosion risk in buried structure or pipeline in KIK. In this research, 5 points of reference chosen to represent different soil conditions in KIK and material used is API 5L to represent the structure of a pipe used in gas industries. The observation conducted on the soil condition and material to analyse the corrosion behaviour in KIK. The result shows that KIK has low corrosion risk and complex corrosion behaviour. Some areas have different corrosion behaviour than others, and the condition can be dynamic to time. It is recommended to use this article wisely for engineers to use this article for corrosion engineering in this area. Keywords: Corrosion Engineering, Buried Steel Corrosion, Corrosion Risk, Kariangau Industrial Complex Share Link | Plain Format | Corresponding Author (Rifqi Aulia Tanjung)

59	Environment, Health, and Safety	ABS-132
Prediction of spatial pollution load using the PLOAD Model A Rezagama1*, A Sarminingsih 1, S Sariffudin 2, H Hariyanto3, C R A Daniswara1, D G Febbyany1 1 Department of Environmental Engineering, Faculty of Engineering, Universitas Diponegoro, Semarang, Central Java, Indonesia 2 Department of Urban Planning Engineering, Faculty of Engineering, Universitas Diponegoro, Semarang, Central Java, Indonesia 3 Department of Geography, Faculty of Social Sciences, Universitas Negri Semarang, Semarang, Central Java, Indonesia Abstract Population growth encourages changes in land, and results in increased settlement land. This can have an impact on the hydrological process in a watershed. With land changes along with domestic, agricultural and industrial activities, settlements will have an impact on river water quality. Pollutants originating from runoff water of various types of land use including settlements and industry and the results of this human activity are called non point source pollutants (NPS). A tool or tool is needed that can estimate the NPS pollutants produced in a watershed. Tools that can estimate Non Point Source pollutants are using the BASINS application. BASINS is designed to conduct watershed-based research and water quality. BASINS integrates data in an environmental Geographic Information System (GIS). The BASINS has a variety of models, one of which is the Pollutant Loading Estimator (PLOAD), which is a simplified GIS-based model for calculating pollution loads for watersheds. Keywords: pollutant loading, landuse changes, PLOAD model Share Link | Plain Format | Corresponding Author (Siti Yumaroh)

60	Environmental Science, Technology, and Education	ABS-2
Analysis of land requirements of Temesi Final Disposal Facility, Gianyar Regency with 3R waste management scenario 1) Gede Adi Wiguna Sudiartha* and 2) I Wayan Budiarsa Suyasa 1) Environmental Engineering Study Programme, Faculty of Engineering, Udayana University, Indonesia 2) Environmental Science Study Programme, Faculty of Mathematics and Science, Udayana University, Indonesia Abstract The increase in waste generation which is not accompanied by adequate provision of waste treatment facilities and only depends on conventional waste collection - collect, transfer, dispose- causing an immense accumulation of untreated waste on TPA Temesi (Temesi Final Disposal). Based on waste generation projection, on 2040 the total waste generation in Gianyar Regency was approximated about 1208,88 m3/day from a total occupant of 593.436 inhabitants in Gianyar Regency. The existing supporting capacity of TPA Temesi was 15.450 m3 meanwhile the total waste generation in Gianyar Regency on 2020 is up to 146.356 m3 consequently it is no longer a surprise if TPA Temesi was overloaded by untreated solid waste since 2020. In order to reduce waste generation and decreasing treatment burden in TPA Temesi, solid waste management using 3R method from household cluster needs to be applied. Using 3R concept, eventually the waste generation that disposed into TPA Temesi can be reduced significantly by 47%, from 1208,88 m3/day into 634 m3/day with total weight of 148 tonne/day on 2040. Within the 3R waste management from households, the land requirement could be reduced into only 1,54 Ha on 2020 and 20 Ha on 2040 from previously about 3 Ha and 39 Ha respectively. Keywords: 3R Methods, final disposal, solid waste treatment, TPA Temesi Share Link | Plain Format | Corresponding Author (Gede Adi Wiguna Sudiartha)

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