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Maintenance Agreements


The County also requires that a stormwater facilities maintenance agreement between the County and the owner be executed for all stormwater facilities to ensure that the facilities will be maintained in accordance with the O&M Manual.
A copy of the standard County Stormwater Facilities Maintenance Agreement (Appendix A) for owner review is provided below.

Southeast Metro Stormwater Authority Boundary


Appendix A shall be used for all County projects requiring an O&M Manual, even if the project is within the boundaries of the Southeast Metro Stormwater Authority. The remaining County templates are for use outside of SEMSWA’s boundary.Your County case engineer can assist you in determining if your project is within SEMSWA’s boundary.

The O&M Manual shall be submitted for acceptance and shall be prepared by the design engineer and certified by the owner and design engineer. Except for Appendix A below, if your site is within SEMSWA’s boundary, please use SEMSWA’s Operation and Maintenance Manual Templates.


Download Operation and Maintenance Manual Templates:


Instructions and Opening Appendices: 



Appendix C - Standard Operation Procedures (SOP): 



Appendix D - Arapahoe County Inspection Forms:


Appendix E - Arapahoe County Maintenance Forms:




Appendix F:






    Appendix G – Stormwater Facilities Map; Facility Plan and Details Drawings:



    Sample Detail Sheets: