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Drainage Plan Requirements
Grading & Drainage Report
Any new home construction, or proposals to increase the square footage of a structure on a lot by more than 2,500 square feet of impervious surface area (structure additions, hardscapes, and pavements) is required to submit a grading and drainage report. The Village has adopted the Arapahoe County Stormwater Management Manual (PDF) for its drainage plan requirements.
Required Submissions
A Phase III drainage report should be submitted with the building permit. No building permit will be issued until the Village has reviewed and approved the grading and drainage report.
A State and City Stormwater permit, along with an SWMP, is required for any construction disturbing 1 acre or more of land. If disturbing less than 1 acre of land, but construction is adjacent to a watercourse or wetland, then a City Stormwater permit, along with an SWMP, is required. More information can be found here Version Options Drainage Plan RequirementsHeadline.
Drainage, GESC, and Engineering Plan Requirements
Please use the below approval block and checklists for requirements for drainage, stormwater, and other engineering plans.
- Phase III Drainage Plan Checklist
- GESC Drawing and Report Plan Checklist
- Civil Engineering Plans Checklist
- O&M Manual Requirements and Site Plan Checklist
- CHV Civil Engineering Plans Approval Block
Below is a link to Arapahoe County's webpage that provides templates that may help when creating O&M Manual documents.