| Agency | Form: (02 )
1758780
9/16/2009 | <style type="text/css">
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<p><span class="Normal">1) NO CBL ON FILE. CALCULATED TOC IS LESS THAN 200' OVER NIOBRARA. RUN AND SUBMIT CBL </span><span class="Normal">TO VERIFY CEMENT COVERAGE FROM BOTTOM OF PRODUCTION CASING TO AT LEAST 200' ABOVE </span><span class="Normal">NIOBRARA. 2) COMPLY WITH RULE 317.P AND PROVIDE REMEDIAL CEMENT FROM CURRENT TOC </span><span class="Normal">TO 200' ABOVE NIOBRARA (6670' MIN.) IF CURRENT TOC IS BELOW THAT POINT. ALSO PROVIDE </span><span class="Normal">REMEDIAL CEMENT FROM 760' TO 50' ABOVE SURFACE CASING SHOE. VERIFY COVERAGE WITH </span><span class="Normal">CEMENT BOND LOG. </span></p>
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| Engineer | Form: (02 )
400115216
12/21/2010 | 1) No CBL on file. Calculated TOC is less than 200' over Niobrara. Run and submit CBL to
Verify cement coverage from bottom of production casing to at least 200' above
Niobrara.
2) Comply with Rule 317.p and provide remedial cement from current TOC to 6670' (NBRR) if current TOC is below that point. Also provide remedial cement from 4720'-4160' (SUSX) and 760' - 50' above surface casing shoe (Fox Hills). Verify coverage with cement bond log.
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| Engineer | Form: (06 )
400321498
8/30/2012 | 1) Provide 48 hour notice of MIRU to Randy Edelen at (970) 520-2531.
2) Please provide the most recent CBL referenced in the plugging procedures, which is not on file with the COGCC.
3) Provide an “As Plugged” wellbore diagram identifying the specific plugging completed.
4) For the surface casing shoe plug, if not circulated to surface, tag plug and it must be at least 490’ or higher.
5) If unable to pull casing contact COGCC for plugging modifications.
6) Properly abandon flowlines as per Rule 1103.
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