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• 4.3.4 Geotechnical Program <br />A long term, time-domain-reflectometry monitoring program associated with well 4A- <br />5M showed no indication of subsidence in 1998. There has been no indication of <br />subsidence from this well since installation. No major drilling program is planned which <br />will significantly advance the geotechnical program in 1999. Annual survey of <br />permanent survey marker indicated no surface subsidence above panel #1 mining <br />area. <br />4.3.5 Air Permit <br />No State APCD inspection of the site was performed in 1998. The APCD issued final <br />• approval of APEN for the 12.55 million BTU per hour boiler (permit # 97 RB 0516). An <br />application for an APEN was submitted to APCD for planned air classifier and baghouse. <br />4.3.6 Stormwater Discharge Permit <br />The permit requires specific action, i.e. an annual report by February 15, site inspection at <br />least twice per year, and submittal of certification of completion and implementation. The <br />annual report, inspection fee and certification were submitted in 1998 per the permit. <br />• <br />23 <br />