ADVANCED SOLID WASTE MANAGEMENT UNIT IV

Okay, this will probably be really short. I just wanted to kind of go over it and explain how we put all of the numbers together so that we can cross out the units. In this situation, a local municipality has plans to annex a suburb community of 50,000 people. Neither the municipality nor the community has a curbside recycle program as they both put all of their refuse into the trash bin for collection. The municipality hand sorts the refuse and they recognize that they will need to hire new employees and establish a budget to hand sort a larger amount of waste because you’re adding 50,000 people. So, we’re going to assume the following:

1. Hand sorting is done 6 hours per day, 4 days per week. 2. Employees are paid $15 per hour, and this includes allotted benefits.

So we have to decide how many new full-time employees we need to hire. So the sort rate, if you go to page 183 in your book and reference it, there is a sort rate in there that says the sort rate is 1,000 pounds per hour per person. The amount of recycled refuse to be handpicked is 1.14 pounds per person per day based on this table that is in your book as well. And we’re talking about recycling, so that’s where we get the 1.14. We are looking at the recovery for recycling, and we’re looking at the most recent year in this table, and that’s 1.14. That’s where we’re getting this. Okay? So then you’re going to just set everything up. We need to calculate the number of new employees. So we have 50,000 people, and we know its 1.14 pounds per day. Now, notice how my days cancel out. They’re working 4 days per week. See how I’ve set that out. Notice how 1 week is gone, the hours are gone, and there’s our 1,000 pounds. And where’s that? There’s that. See how that just kind of goes away? The 1000 pounds is based on what it says up there. The 1000 pounds per hour per person. Okay, so if you notice, every unit has been marked out except for people. And that’s what we’re calculating. So we come up with when we take 50,000, multiply it by 1.14, multiply it by 4, equals, divided by 1000, times 24, we get approximately 9.5 people. We round up, so we need 10 new hires. Okay, now it also wants us to know what the additional budget would be to cover the cost of these 10 new employees. So then we set it up again. We know they’re going to be paid 15 bucks an hour, and we’re talking about a full year, so that’s the number of hours that the additional 10 new employees will work per year, and notice that the—this is how I calculated this right here—24 hours per week times 52 weeks, and then we get that. Then, we just do the multiplication, and you get the amount that you need is $187,200. Okay? And that’s how you calculate this.