11 Jul Project 5.1: Resolving a Landfill ProblemYou are the assistant engi
Project 5.1: Resolving a Landfill ProblemYou are the assistant engineer for the Town of Quillicom in Michigan.Your boss is Robert D. Delorme, P.E., who is the town engineer.Mr. Delorme calls you into his office and announces, “I have a projectfor you. The Town Council has finally decided to so something aboutthe landfill problem, and they want it done in a hurry.”You know about the landfill problem. The existing landfill site—atLot 22, Subdivision 3S—is nearly full and, recognizing that a new sitewill not be selected before the present site reaches its capacity, he hasauthorized dumping an additional layer of garbage on top of the com-pacted fill.“Before you do anything, I want you to read this,” Mr. Delorme con-tinues, placing a report in your hands. “It’s a study done by H. L.Winman and Associates a while ago, and it affects what you will bedoing. Take it away and read it, and then come back to me for furtherinstructions.”You read the report (you will find it in Figure 5-6, on pages 112 to117) and then go back to see Mr. Delorme.“The town councillors have decided,” he says, “that before they canmake a decision they need to know how much it will cost to drill adozen boreholes north of Quillicom and analyze the results. I want youto get some quotations that I can present to them. You should also beaware that the councillors very much prefer Lot 18, Subdivision 5N,rather than either of the other locations.”“Who will plot the results of the drilling?” you ask.“Morley Wozniak, at H. L. Winman and Associates in Lansing,Michigan. He did the previous study and wrote the report I asked you toread.” Mr. Delorme hands you a map (the same as that in Figure 5-6,page 114) and a list titled Borehole Specifications for the Area North ofQuillicom, which contains the exact positions Morley has identifiedwhere the drilling must be carried out.“And how many quotations should I get?” you ask.“Two, as a minimum,” Mr. Delorme suggests. “Three would bebetter.”The following week you call on the only two drilling companies youknow of in the area, one in Quillicom and one in Marquette. They giveyou the following quotations:Northwest Drillers, Inc. $78,520 (tax incl)Quillicom, MichiganM. J. Peabody Inc. $75,900 (tax extra)Marquette, MichiganYou had almost given up hope that you would find a third companyto give you a quotation, when Mr. Delorme telephones. “Go and seeBert Knowles,” he instructs you. “He’s the assistant to the superintend-ent at Melody Lake Mine, and he has a suggestion for an alternativelandfill site.”Mr. Knowles comes right to the point: “We do both open-pit andunderground mining. Our open-pit mine is nearly worked out andwe will finish excavating there in less than two years. The problem isthat it’s unsightly, and the Environmental Protection Agency is leaningon Melody Lake Mines to do something about it. That’s where youcome in.”He explains that the Town of Quillicom can use the open-pit mine fora landfill, and the mine will lease it to the town for one dollar a year.“We have only two conditions. You must spread soil over the compactedgarbage, and do it progressively as you go along so there will be noobnoxious smell for the people who live near the mine to contend with.And then you must seed it and plant trees.”You agree: it’s something the Town would do anyway, before closinga landfill site.Mr. Knowles drives you to the site and you stand on the lip of a shal-low, roughly oval excavation varying from about 10 to 50 feet deep.“How large is it?” you enquire.“You’ll have to talk to Inga Paullsen. She’s the mine geologist.”When you visit Inga, she calculates the size of the excavation as60.9 acres. “That’s what it will be,” she adds, “when the mining is com-plete. Why do you need to know?”You describe the difficulty the Town Council is having in finding alandfill site, mention the three other sites, say the one north of the towncould create an environmental problem, and explain you won’t knowuntil drilling has been completed there.“But drilling has already been done there,” Inga exclaims. “When Iwas a junior at college I worked one summer with an exploration crewsinking boreholes north of Quillicom. We were looking for an alterna-tive place to sink a mine shaft, but we found no ore deposits north ofeither Melody Lake or Quillicom. We drilled quite a few boreholes.”Inga tells you the mine does not have the records, only a report fromthe drilling company. She searches for it among the geology records, butcannot find it. “It’s strange,” she mutters, “It should be here. Someonemust have removed it.”The drilling company Inga worked for was Mayquill Explorations,but she says it does not exist anymore. “When Ernie Mays retired hesimply closed down the company. Maybe he still has the records. Youcould ask him. He still lives in Quillicom.”Ernie Mays is about 70 and he lives in a bungalow at 211 WesterhillCrescent.“I quit eight years ago,” he tells you. “I sold some of my accounts toNorthwest Drillers—those that were still active—and kept the remain-der.”He remembers drilling for Melody Lake Mines. “We sank about 20boreholes, all north of Quillicom, but we didn’t find anything.”You ask if he remembers whether the bedrock slopes, but he shakeshis head. “Not really,” he says. “Nothing definite.”But he adds that he does remember there was evidence of a large sandesker running roughly south-southwest toward Quillicom.“Do you still have the records?”“No,” he says. “The mine has them. Mr Caldicott came to see mehimself, about three years ago, and I gave them all to him.”Suddenly, everything falls into place. Frank Caldicott is not only gen-eral manager of Melody Lake Mines, but also a very influentialQuillicom town councillor. And his youngest sister, Julie, is married tothe town engineer—Robert Delorme, your boss.Because you have so much new information to include, you decide towrite a semiformal report of your findings. (You will have to decidewhether you will include the information you now have about the previ-ous drilling north of Quillicom, and the location of the records.)Here is some additional data you may need to write your report:1. You are concerned about groundwater contamination problems ifthe open-pit mine is used as a landfill, so call Morley Wozniak atH. L. Winman and Associates in Lansing. He tells you that it willnot be a problem. “Both the lake and the mining community arenorth of the pit, and the bedrock slopes to the south.”2. You calculate that costs to develop the open-pit mine as a landfillwill be only $3000, because you can use the buildings and approachroads that are already there.3. The open-pit mine is 2.5 miles directly south of Quillicom, but 4.1miles by road (2.4 miles southeast along highway A806, then 1.7miles southwest along highway B1201).4. The annual operating cost for using the open-pit mine as a landfillwill be $49,500, which is $2500 more than the cost for operatingthe current landfill.5. You obtain a third drilling estimate from Quattro Drilling andExploration Company in Houghton, Michigan, which quotes$83,200, tax included.Before starting to write your report you visit Thunder Bay on otherbusiness. On a hunch you visit the Land Titles Office and look up thesurveys for the area north of Quillicom. Against Lot 18, Subdivision 5N,you find the owner listed as Julie Sarah Caldicott, 207 Northern Drive,Quillicom, Michigan.Now write your report. Project 5.1: Resolving a Landfill ProblemYou are the assistant engineer for the Town of Quillicom in Michigan.Your boss is Robert D. Delorme, P.E., who is the town engineer.Mr. Delorme calls you into his office and announces, “I have a projectfor you. The Town Council has finally decided to so something aboutthe landfill problem, and they want it done in a hurry.”You know about the landfill problem. The existing landfill site—atLot 22, Subdivision 3S—is nearly full and, recognizing that a new sitewill not be selected before the present site reaches its capacity, he hasauthorized dumping an additional layer of garbage on top of the com-pacted fill.“Before you do anything, I want you to read this,” Mr. Delorme con-tinues, placing a report in your hands. “It’s a study done by H. L.Winman and Associates a while ago, and it affects what you will bedoing. Take it away and read it, and then come back to me for furtherinstructions.”You read the report (you will find it in Figure 5-6, on pages 112 to117) and then go back to see Mr. Delorme.“The town councillors have decided,” he says, “that before they canmake a decision they need to know how much it will cost to drill adozen boreholes north of Quillicom and analyze the results. I want youto get some quotations that I can present to them. You should also beaware that the councillors very much prefer Lot 18, Subdivision 5N,rather than either of the other locations.”“Who will plot the results of the drilling?” you ask.“Morley Wozniak, at H. L. Winman and Associates in Lansing,Michigan. He did the previous study and wrote the report I asked you toread.” Mr. Delorme hands you a map (the same as that in Figure 5-6,page 114) and a list titled Borehole Specifications for the Area North ofQuillicom, which contains the exact positions Morley has identifiedwhere the drilling must be carried out.“And how many quotations should I get?” you ask.“Two, as a minimum,” Mr. Delorme suggests. “Three would bebetter.”The following week you call on the only two drilling companies youknow of in the area, one in Quillicom and one in Marquette. They giveyou the following quotations:Northwest Drillers, Inc. $78,520 (tax incl)Quillicom, MichiganM. J. Peabody Inc. $75,900 (tax extra)Marquette, MichiganYou had almost given up hope that you would find a third companyto give you a quotation, when Mr. Delorme telephones. “Go and seeBert Knowles,” he instructs you. “He’s the assistant to the superintend-ent at Melody Lake Mine, and he has a suggestion for an alternativelandfill site.”Mr. Knowles comes right to the point: “We do both open-pit andunderground mining. Our open-pit mine is nearly worked out andwe will finish excavating there in less than two years. The problem isthat it’s unsightly, and the Environmental Protection Agency is leaningon Melody Lake Mines to do something about it. That’s where youcome in.”He explains that the Town of Quillicom can use the open-pit mine fora landfill, and the mine will lease it to the town for one dollar a year.“We have only two conditions. You must spread soil over the compactedgarbage, and do it progressively as you go along so there will be noobnoxious smell for the people who live near the mine to contend with.And then you must seed it and plant trees.”You agree: it’s something the Town would do anyway, before closinga landfill site.Mr. Knowles drives you to the site and you stand on the lip of a shal-low, roughly oval excavation varying from about 10 to 50 feet deep.“How large is it?” you enquire.“You’ll have to talk to Inga Paullsen. She’s the mine geologist.”When you visit Inga, she calculates the size of the excavation as60.9 acres. “That’s what it will be,” she adds, “when the mining is com-plete. Why do you need to know?”You describe the difficulty the Town Council is having in finding alandfill site, mention the three other sites, say the one north of the towncould create an environmental problem, and explain you won’t knowuntil drilling has been completed there.“But drilling has already been done there,” Inga exclaims. “When Iwas a junior at college I worked one summer with an exploration crewsinking boreholes north of Quillicom. We were looking for an alterna-tive place to sink a mine shaft, but we found no ore deposits north ofeither Melody Lake or Quillicom. We drilled quite a few boreholes.”Inga tells you the mine does not have the records, only a report fromthe drilling company. She searches for it among the geology records, butcannot find it. “It’s strange,” she mutters, “It should be here. Someonemust have removed it.”The drilling company Inga worked for was Mayquill Explorations,but she says it does not exist anymore. “When Ernie Mays retired hesimply closed down the company. Maybe he still has the records. Youcould ask him. He still lives in Quillicom.”Ernie Mays is about 70 and he lives in a bungalow at 211 WesterhillCrescent.“I quit eight years ago,” he tells you. “I sold some of my accounts toNorthwest Drillers—those that were still active—and kept the remain-der.”He remembers drilling for Melody Lake Mines. “We sank about 20boreholes, all north of Quillicom, but we didn’t find anything.”You ask if he remembers whether the bedrock slopes, but he shakeshis head. “Not really,” he says. “Nothing definite.”But he adds that he does remember there was evidence of a large sandesker running roughly south-southwest toward Quillicom.“Do you still have the records?”“No,” he says. “The mine has them. Mr Caldicott came to see mehimself, about three years ago, and I gave them all to him.”Suddenly, everything falls into place. Frank Caldicott is not only gen-eral manager of Melody Lake Mines, but also a very influentialQuillicom town councillor. And his youngest sister, Julie, is married tothe town engineer—Robert Delorme, your boss.Because you have so much new information to include, you decide towrite a semiformal report of your findings. (You will have to decidewhether you will include the information you now have about the previ-ous drilling north of Quillicom, and the location of the records.)Here is some additional data you may need to write your report:1. You are concerned about groundwater contamination problems ifthe open-pit mine is used as a landfill, so call Morley Wozniak atH. L. Winman and Associates in Lansing. He tells you that it willnot be a problem. “Both the lake and the mining community arenorth of the pit, and the bedrock slopes to the south.”2. You calculate that costs to develop the open-pit mine as a landfillwill be only $3000, because you can use the buildings and approachroads that are already there.3. The open-pit mine is 2.5 miles directly south of Quillicom, but 4.1miles by road (2.4 miles southeast along highway A806, then 1.7miles southwest along highway B1201).4. The annual operating cost for using the open-pit mine as a landfillwill be $49,500, which is $2500 more than the cost for operatingthe current landfill.5. You obtain a third drilling estimate from Quattro Drilling andExploration Company in Houghton, Michigan, which quotes$83,200, tax included.Before starting to write your report you visit Thunder Bay on otherbusiness. On a hunch you visit the Land Titles Office and look up thesurveys for the area north of Quillicom. Against Lot 18, Subdivision 5N,you find the owner listed as Julie Sarah Caldicott, 207 Northern Drive,Quillicom, Michigan.Now write your report.
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