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Case Studies
Case Study Collection Process
The ITRC Mining Waste Team collected case studies from mine sites throughout the United States and one from New Brunswick, Canada using an online survey tool. The survey contained a total of 23 questions concerning the following specifics:

After the initial submittal, team members conducted follow-up as much as possible. Even so, there are some sections of particular case studies that contain limited or no information. The case studies reflect what was received in the initial survey and follow-up by team members. Some case studies are more detailed than others, which again, is a reflection of what was obtained. We highly recommend that users of this web-based selection tool contact people listed in the case studies to receive up-to-date information on the application. Regardless of the follow-up completed, a case study is still a snapshot and is dated at the time of publication. The objective of the survey was stated as follows:

The ITRC Mining Waste Team is collecting case studies of tests and full scale operation of technologies used to treat contaminants of concern in mining-related material. We hope to obtain, at a minimum, a description of the technology, a brief background of the site, and a way to contact someone familiar with the technology in order to obtain follow-up information. These case studies will provide the ITRC Mining Waste Team a snapshot of information on emerging, innovative, or new applications of conventional technologies being used or tested to treat mine-related solid waste and mine-impacted water. The ITRC team will use these case studies as a part of their process to evaluate what technologies are being tested and how the technology is performing.

The survey request was sent to the ITRC Points of Contact, DOE, DOD, EPA, ITRC Industry Affiliates Program members, and ITRC Mining Waste Team members. Team members also forwarded the Case Study Survey request to colleagues. The initial survey period was from March 21, 2008 to May 2, 2008 but was extended upon request and as necessary. Throughout the project, the team identified applicable examples and obtained further case study write-ups.

This table contains a list of all case studies in the Mining Waste Technology Selection Website. Each case study is listed according to the states (alphabetically). Each state on the map is hyperlinked to the following table.

Mining Waste Case Study Distribution Click Here to go to Oregon in the table below. Click Here to go to California in the table below. Click Here to go to Texas in the table below. Click Here to go to Oklahoma in the table below. Click Here to go to Alabama in the table below. Click Here to go to Tennessee in the table below. Click Here to go to Virginia in the table below. Click Here to go to New Mexico in the table below. Click Here to go to Arizona in the table below. Click Here to go to Utah in the table below. Click Here to go to Colorado in the table below. Click Here to go to Idaho in the table below. Click Here to go to Montana in the table below. Click Here to go to Minnesota in the table below. Click Here to go to Missouri in the table below. Click Here to go to Michigan in the table below. Click Here to go to Indiana in the table below. Click Here to go to Ohio in the table below. Click Here to go to Pennsylvania in the table below. Click Here to go to Vermont in the table below. Click Here to go to Maine in the table below. Click Here to go to New Hampshire in the table below. Click Here to go to New Brunswick in the table below.

Case Study Table

Case Study
Technology
Map #
Alabama
Microbial Mats; Anoxic Limestone Drain; Administrative and Engineering Controls
1
Arizona
Phytotechnologies
10
California
Biochemical Reactor
2
Chemical Precipitation
3
Biochemical Reactor
21
Capping, Covers and Grading; Chemical Precipitation
29
Constructed Treatment Wetlands
32
Capping, Covers and Grading; Microbial Mats; Excavation and Disposal
34
Aeration; Administrative and Engineering Controls
35
Constructed Treatment Wetlands
45
Biochemical Reactor
48
Colorado
Chemical Precipitation
4
Anoxic Limestone Drain
6
Chemical Precipitation
11
Capping, Covers and Grading; Biochemical Reactor; Excavation and Disposal
12
Microbial Mat
22
Chemical Precipitation
57
Idaho
Chemical Precipitation
28
Excavation and Disposal; Capping, Covers and Grading
50
Chemical Precipitation
51
Indiana
Constructed Treatment Wetlands; Anoxic Limestone Drains; Capping, Covers and Grading
53
Maine
Capping, Covers and Grading; Administrative and Engineering Controls
31
Michigan
Capping, Covers and Grading; Administrative and Engineering Controls
23
Minnesota
Ion Exchange
49
Capping Covers and Grading; Constructed Treatment Wetlands; Diversionary Structures
59
Missouri
Chemical Stabilization; Excavation and Disposal; Administrative and Engineering Controls
5
Capping, Covers and Grading
8
Capping, Covers and Grading; Backfilling & Subaqueous Disposal
15
Capping, Covers and Grading; Backfilling & Subaqueous Disposal
26
Capping
36
Capping, Covers and Grading; Chemical Stabilization; Excavation and Disposal; Administrative and Engineering Controls
41
Capping, Covers and Grading; Re-Use and Reprocess: Excavation and Disposal
43
Montana
Passivation
20
Chemical Precipitation
58
New Brunswick
Chemical Precipitation
18
New Hampshire
Chemical Stabilization; Administrative and Engineering Controls
40
New Mexico
Biochemical Reactor
38
Ohio
Multiple Technologies; Administrative and Engineering Controls
39
Oklahoma
Constructed Treatment Wetlands; Administrative and Engineering Controls; Biochemical Reactor; Aeration
13
Constructed Treatment Wetlands; Anoxic Limestone Drain
24
Excavation and Disposal; Capping, Covers and Grading; Backfilling & Subaqueous Disposal
37
In Situ Treatment
44
Re-Use and Reprocess;  Backfilling & Subaqueous Disposal; Administrative and Engineering Controls
52
Oregon
Capping, Covers and Grading; Administrative and Engineering Controls
9
Excavation and Disposal; Capping, Covers and Grading; Administrative and Engineering Controls
25
Excavation and Disposal
47
Pennsylvania
Excavation and Disposal; Constructed Treatment Wetlands2; Capping, Covers and Grading
7
Anoxic Limestone Drain; Chemical Precipitation
19
Capping, Covers and Grading; Excavation & Disposal
27
Biochemical Reactor
33
Pressure Driven Membrane Separation
42
Chemical Precipitation
54
Tennessee
Multiple Technologies; Administrative and Engineering Controls
14
In-situ Biological Treatment
46
Texas
Microbial Mats
17
Utah
Pressure-Driven Membrane Separation
30
Vermont
Capping, Covers and Grading; In Situ Biological Treatment; Administrative and Engineering Controls
16
Chemical Precipitation
56
Virginia
Excavation and Disposal; Constructed Treatment Wetlands; Anoxic Limestone Drain; Capping, Covers and Grading
55

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