The Engineering Services Division provides civil engineering review, permitting, inspections, and stormwater management services. 

Land Use Development
Review and approval of impacts from proposed development on public infrastructure

Permitting and Inspections
Permit and inspect infrastructure and utilities within the public right-of-way

Utility Installation within Right-of-Way
Review and approval of utility installation proposed within County right-of-way

Floodplain and Stormwater Management
Floodplain and stormwater administration, management, and regulation

Quick Links

• Public Works On Call
• Who is the Engineering Service Division? Meet the ESD Staff
• Is your project within unincorporated Arapahoe County? Check what jurisdiction my project is in.
• Service Request Form: Request road maintenance or report a potential road concern or hazard in unincorporated Arapahoe County.

MS4 Permit Changes

On December 1, 2016, the Colorado Department of Public Health and Environment (CDPHE) re-issued the CDPS General Permit CORO80000 Stormwater Discharges Associated with Municipal Separate Storm Sewer Systems (MS4’s) that Discharge to the Cherry Creek Reservior Drainage Basin Authorization to Discharge under the Colorado Discharge Permit System. This new permit imposes new requirements for MS4 communities that must be adopted and in-place by 7/1/2019. Staff has been working with the Southeast Metro Stormwater Authority (SEMSWA) to update the following documents and a brief description of the purpose and/or changes to each:
County Enforcement Response Plan
GESC Manual
NPDES Permit Area Map
PHASE III Drainage Report Checklist
SMM Chapter 14 County Version
Stormwater Ordinance No 2019-02
Table 14-1
Water Quality Matrix Within Cherry Creek
Water Quality Matrix Outside Cherry Creek
20-10 Calculator