Search

The extraction of limestone for cement production can adversely affect the environment. An inquiry is underway to examine the environmental ramifications of limestone mining to formulate strategies to mitigate these effects. This study aims to assess the ecological impact indicators of the limestone mining process by utilizing the LCA method based on CML-IAbaseline data from the openLCA software. The results indicate that crushing is a significant area of focus, contributing the most extensive value. The ratio of Ammonium Nitrate to diesel oil in adherence to guidelines is 94.5 to 5.5%. Particular emphasis is placed on assessing raw materials, especially during the loading and hauling stages. In conclusion, the research findings reveal environmental impact indicators with standardized values, such as Abiotic Depletion, Abiotic Depletion of Fossil Fuels, Acidification, Eutrophication of Freshwater Aquatic Ecotoxicity, Global Warming 100a, Human Toxicity, Marine Aquatic Ecotoxicity, Ozone Layer Depletion, Photochemical Oxidation, and Terrestrial Ecotoxicity.

Construction projects are among the sectors that are growing rapidly in Indonesia and have an impact on the environment from the resulting construction waste. The purpose of this study is to analyze the highest type and quantity of construction waste generated from Mechanical Electrical Plumbing (MEP) work from the difference in the amount of material from the BOQ with the amount attached to the as-built drawings, evaluate the economic value by calculating the ratio of the amount of waste generated to the amount of material at BOQ (waste level) × the scope of work percentage (waste cost), selling value of waste (the quantity of waste × the local selling price), and costs of disposal of construction waste based on the agreement of each project management. This study uses a descriptive quantitative method. The results showed that most of the construction waste generated was based on its type, consisting of copper-based cables, steel and plastic pipes, and polyurethane ducts. The highest quantity of construction waste came from the office project, which was 2 × 1.5 mm2 NYA cables (216,515 m). The highest waste level value came from office, condotel, and factory projects using several types of cables (> 94%). The highest waste cost value came from the condotel project is polyurethane duct (IDR 5,727,267,000.00). The metal waste produced is sold by contractors to collectors for recycling. Non-metal waste is disposed by paying a civil contractor. Construction waste management policies must be implemented to reduce the amount and impact of construction waste generated.

The Chairul Saleh Building or the Secretariat General Office Building has implemented the Energy Management Program since 2016. In this study, an assessment was carried out based on the GBCI environmental assessment tool, especially for aspects of land use, energy efficiency and conservation, water conservation, and building environmental management aspects. The requirement analysis to get a green predicate is provided by points assessment which fullfillment the standard. Chairul Saleh building has implemented 10 of the 16 points in Appropriate Site Development category. Energy efficiency and conservation, Chairul Saleh building has implemented 29 of the 36 maximum points. Water Conservation category managed to get 5 out of 20 maximum points, while Building Environmental Management managed to get 11 out of 13 points, Material Resource and Cycle get 8 out of 12 points, Indoor Health and Comfort, get 9 out of 20 points, which was determined in the GBCI greenship rating tools for existing building. The result revealed that in the total value of Chairul Saleh Building was 72 points, it meants achived the Gold certification. Based on the rating set by the GBCI greenship, the Chairul Saleh building is currently awarded a Gold rating for its ability to apply the green building standard.

The protection of Karakelang wildlife sanctuary has been challenged by forest encroachment, timber harvesting and wildlife poaching - all of which are attributed to social economic condition of the communities living in the vicinity. A community based conservation program was delivered to strengthen communities’ role in maintaining forest integrity while making good income from sustainable agriculture. This action research using mixed methodology evaluates the influence of program delivery in changing the knowledge, attitude and practice of forest protection and sustainable agriculture among beneficiaries in three villages. Data was collected using structured interview, while other supporting information was taken from project reports and field notes. The Wilcoxon Signed Rank Test reveals that program has influence in changing the knowledge of respondents in both forest protection and sustainable agriculture, as well as in the change of attitude and practice regarding sustainable agriculture. However, it does not have influence in changing their attitude and practice toward forest protection. As shwon by economic indicator, program has contributed in providing new source of income to farmers household. The result of logistic regression shows that age, education, land ownership and income has influence in the change of people’s knowledge about forest biodiversity. Only age has influence in change of attitude towards sustainable agriculture, and only land ownership has influence on support to forest protection.