2009-10-08_PERMIT FILE - C1982056

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 10/8/2009
• Doc Name: Water Treatment Pilot Installation
• Section_Exhibit Name: Exhibit 49T Water Treatment Pilot Installation - Design Drawings
• Media Type: D
• Archive: No

� C PROPRIETARY& CONFIDENTIAL
. Mine Water Treatment — Peabody Energy Page 11 of 48
4.1.3 Pilot Design Validation & Data Collection
Water Tectonics will implement the sampling program as defined in the
approved QAPP. Specifically, auto - samplers will be used to collect
composite samples before and after the pilot treatment system.
Composite samples will be collected daily over an 8 hour shift for twenty
days. Sampling will provide information on the consistency of influent
characteristics and ongoing performance of the proposed treatment
system.
The first sampling event will occur after initial system set -up. Preliminary
results from the sampling event will be used to determine the need for
additional treatment component(s) and or additional baseline sampling to
evaluate. If no changes are determined to be necessary, an additional
sampling event will be performed to confirm the findings. If changes are
necessary, additional baseline sampling events will be scheduled and /or
reconfiguration of the system, with the results dictating the next course of
action. A final round of sampling will be performed once the final system
design has been achieved. Field personnel will collect composite samples,
measure field parameters, and record pertinent system observations.
Interim reports will be provided to Peabody personnel during the pilot
period.
• 4.1.4 Technology Evaluation Report (TER)
At the conclusion of the pilot, Water Tectonics will summarize the pilot
performance and operational measurements into a Technology Evaluation
Report. Included in this report are the final assessments regarding the
pilot:
• Comparison of collected aliquots to sampling criteria;
• Comparison of influent to effluent pollutant concentrations;
• Comparison of interim points within the system process to evaluate
the contribution of each piece of equipment;
• Statistical data evaluation to include deviations from any sampling
procedures;
• Data quality assurance summary package (field and laboratory
QA /QC results);
• Maintenance performed during the study period, including:
✓ Type of maintenance conducted and frequency;
✓ Total amount of sediment and floatables removed and
sediment depth prior to each cleaning; and
✓ Media replacement and /or cleaning, if applicable;
✓ Power consumption data related system performance and
output;
• 0 Discussion of performance results; and
• Executive Summary.
Document Version: 4.0 © Water Tectonics, Inc. 2008. All rights reserved. /�
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