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Amy Eschberger Protect No 20144265 ' <br /> Colorado Division of Reclamation, Mining and Safety July 24,2020 <br /> 4.2 Data Evaluation and Reporting ' <br /> Monitoring results from MW-8 and MW-9 (if installed)will be presented in the semi-annual monitoring reports. <br /> Once sufficient data exist to be able to evaluate the results by the methods described in Section 3, this evaluation ' <br /> will also be presented in the semi-annual reports. <br /> If a demonstration can be made that the concentrations observed in MW-4, MW-6 and MW-7 are reflective of ' <br /> background conditions (i.e., similar to MW-8), a technical revision to the permit will be issued that requests Site <br /> reclamation liability be released and discontinuation of the groundwater monitoring program. <br /> If a demonstration can be made that the concentrations observed in MW-9 are below the BSGW or reflective of ' <br /> background (i.e., similar to MW-8), a technical revision to the permit will be issued that requests Site reclamation <br /> liability be released and discontinuation of the groundwater monitoring program. ' <br /> 5.0 REFERENCES <br /> Golder, 2010, Groundwater Sampling and Analysis Plan for the Boettcher Limestone Quarry in La Porte, ' <br /> Colorado. Golder Associates Inc., Lakewood, Colorado, April 28, 2010. <br /> Golder, 2018. Request for Technical Revision of Permit M-1977-348: Changes to the Groundwater Analyte list at ' <br /> The Boettcher Quarry Golder Associates Inc., Lakewood, Colorado, September 5, 2018. <br /> U.S. Environmental Protection Agency (USEPA), Office of Superfund Remediation and Technology Innovation, <br /> January 2017. National Functional Guidelines for Inorganic Superfund Methods Data Review. EPA-540-R-2017- ' <br /> 001. <br /> https//golderassociates sharepomt com/sites/127556/protect files/6 deliverables/techmemos/1-tm-req_tech_rewson/1-tm-0/20144265-1-tm-a- <br /> request_tech_revision_tr11_permit_m1977348_24tu1y20 docx <br /> ATTACHMENTS: Figure 1 — Proposed Locations ' <br /> Attachment A- Box and Whisker Plots , <br /> Attachment B—Time Series Graphs <br /> GOLDER 6 ' <br />