A community of 1200 homes cannot pay for the initial and operating costs of the recycling collection vehicles that were to be used. Instead, residents are to haul recycling containers to a drop off centre operated by the community. Calculate the number of vehicles from which recyclable materials must be unloaded per hour at the recycling centre. Assume the centre is open for 8 hours per day, two days a week, and that 40% of the residents will deliver recycling containers. Also assume 75% of the participants will take their separated materials to the drop-off centre once a week and the remaining 25% of participants will bring separated materials to the centre once every two weeks.

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Question # 4 (a): Quantify the number of 60 gallons garbage containers a family of eight peoples will need if they are generating domestic solid waste at rate of 2lb/cap/day having a density of 220lb/yd3 and the collection is once a week. Looking for alternative, how many compacted blocks of 35lb would the family produce if family had a home compactor along with the number of cans required? Subject: Environmental Engineering

Assume it cost an average of $0.03/ton.min to haul waste from collection to transfer station and then from the transfer station to landfill using a transfer vehicle and the operation cost of the transfer station is $2/ton. The cost of hauling waste directly from the collection point to landfill is $0.1/ton.min. The speed limit of any type of vehicle carrying waste between the collection point, the transfer station, and the landfill is 40 miles/hr. At/above what distance (miles) is using a transfer station more economical? Round your answer to the nearest whole number. Show your work.