| Filed On | Filing |
|---|---|
| 10 Jun 2013 | 10-Q |
| 07 Jun 2013 | 10-Q |
| 07 Jun 2013 | 10-Q |
| 07 Jun 2013 | 10-Q |
| 17 Nov 2011 | 10-Q |
| 15 Aug 2011 | 10-Q |
| 17 May 2011 | 10-Q |
| 12 Nov 2010 | FORM 10-Q |
| 13 Aug 2010 | 10-Q |
| 24 May 2010 | FORM 10-Q |
| 17 Nov 2009 | FORM 10-Q |
| 14 Aug 2009 | 10Q |
| 15 May 2009 | FORM 10-Q |
| 12 Nov 2008 | 10-Q |
| 08 Aug 2008 | OP-TECH ENVIRONMENTAL SERVICES INC. FORM 10-Q |
| 07 May 2008 | 10-Q |
| 27 Aug 2007 | OP-TECH ENVIRONMENTAL SERVICES 6/30/07 10Q |
| 15 May 2007 | OP-TECH ENVIRONMENTAL SERVICES, INC. 03/31/07 10-Q |
| 14 Nov 2006 | OP-TECH ENVIRONMENTAL SERVICES, INC. 09/30/2006 10-Q |
| 14 Aug 2006 | OP-TECH ENVIRONMENTAL JUNE 30, 2006 10-Q |
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