Manhole Project:

Start Date: June 2024

Finish Date: January 2025

The Midway City Sanitary District (MCSD) owns an 8-inch sewer on Springdale Street, which crosses under a larger 60-inch sewer built by the Orange County Sanitation District (OCSD) in 1970. The crossing has an inverted siphon that doesn't meet industry standards, with a 2-foot vertical drop shown in a 2014 CCTV inspection. The siphon lacks necessary features like manholes, proper slopes, or air jumpers for maintenance. MCSD is working with AKM Engineering firm for Preparation of Plans and Specifications of Construction of Manholes Upstream and Downstream of the Inverted Siphon at Westminster Boulevard and Springdale Street.

The scope of work is as follows:

1.     Conduct field surveys to determine sewer elevations at specified manholes.

2.     Obtain as-built utility plans for key intersections.

3.     Review project site and compare marked utilities to as-built information.

4.     Select upstream and downstream manhole locations.

5.     Prepare plans, profiles, and specifications, including geotechnical investigation for shoring and dewatering.

6.     Identify permit requirements with local authorities.

7.     Submit plans and specifications for review and address feedback.

8.     Finalize and submit bid-ready documents.

9.     Provide support during bidding and engineering services throughout construction, including as-built plans.