ZEMCH 2015 - International Conference Proceedings | Page 429

During the construction, a waste management plan was implemented. A spreadsheet was used, discriminating waste type and quantity for each month allowing comparisons between previously established indicators. New reduced production targets were created each month. Costs with transportation and disposal as well as income with sales were also monitored to determine the critical waste type in terms of quantity and cost. Results showed that 83.7% of all waste generated during construction was reused or valorized as raw material in the studied project. Best practices aimed at controlling particle emissions and minimizing their risks were implanted such as using water during earthworks, irrigation of soils, wetting objects while sweeping and before cutting with a saw to avoid dust. Groundwater levels were controlled, surface runoff and rainwater collection with adequate drainage systems were implanted with the provision of effluent treatment systems before directing it to the public network, thus avoiding soil and water pollution and minimizing risks of contamination on the construction site. During unloading of materials and concrete, plastic sheets were placed on roads under the truck to collect the remains of materials allowing for its reuse, or referral to the effluent box, avoiding obstruction of public drainage systems. Greywater was reused, such as water from the mortar mixer and from cleansing of equipment and concreting. Water from sinks was reused in the urinals. Training of workers conducted by the safety manager occurred on a daily basis in order to ensure the implementation of the practices. Topics included health and safety programs, environmental care, and rational use of water, energy, waste material, waste management and risk prevention. A digital inclusion program was offered to the workers, families and the neighborhood car valets, with an Employee of the Month Program awarding one worker per month for exemplary behavior based on set criteria. Regular jobsite inspections were performed by the safety personnel to ensure effective implementation of good practices. Integration trainings were carried out with new teams and subcontractors. Temporary facilities designs were elaborated for each construction phase, defining strategic positions for noisy equipment and acoustic treatments thereby reducing the impacts on the neighborhood. Delivery times were agreed with neighbors banning noisy work at weekends. Sound levels were monitored during concreting as well as ensuring that equipment was in good condition, favoring equipment with lower noise and vibration emissions. The production of onsite mortars was minimized, using prefabricated and industrialized materials. Site access and pedestrian flows were managed with daily cleaning and maintenance of roads and sidewalks. A good neighborhood policy was implemented promoting transparency through signs with contact details for complaints and suggestions. Neighborhood buildings were regularly visited. Notification letters were sent out 48 hours prior the concreting and other noisy activities. Complaints were registered and monitored with corrective actions implemented. Table 3 shows that the critical period of the project concerned to claims was in November and December 2012, during superstructure works with a total of 7 claims related to neighborhood house damages, cleanness and particulate matter emissions. Deployment of sustainable practices on construction sites 427