Marysville Ring Levee Phase 2B & 3   3

****Amendment 3 included specification changes, revised pricing schedule, edits tot he evaluation factors and extends the proposal due date.****

Amendment 2 included a revised pricing schedule, revised specification sections, a reduction of the period of performance, the final Environmental Assessment, and historical structure impact report.

***Intrested Vendors List has been posted, as of 3pm 10 Jan 2020.***

****Attachment 2 - Drawings Volume 2 of 2 is too large to attach to this posting. Please contact DeAnna.L.Mannel@usace.army.mil for the file to be sent to you via a file transfer site.****

The Marysville Ring Levee (MRL) consists of approximately 7.5 miles of levee surrounding and protecting the City of Marysville, California. Planned levee improvements address under seepage, through-seepage, embankment slope stability, utility penetrations, constructability, settlement and geometrical corrections to the levee embankment.

Two phases of the Marysville Ring Levee program, namely Phase 2B & Phase 3 are solicited as one construction project and are to be constructed in a minimum of two construction seasons with all construction work completed by Dec. 2022. Phase 3 has been divided up into multiple Segments (A through E) and Phase 2B labeled as Segment D. Segments A, B, and C will be base contract items and Segments D and E will be option items. Upon award of this contract, Segment A must be constructed first in 2020. Segments B and C must not begin physical work sooner than year 2021, unless otherwise notified by the Contracting Officer. Options Segments D and E must not begin physical work sooner than year 2021 and as the options are exercised, unless otherwise notified by the Contracting Officer.

Approximately 15,000 linear feet of cutoff walls (open trench and deep mix method) will be constructed with a conventional degrade approach with removal of 1/3 of the levee height as measured from an average landside elevation. The cutoff wall begins on the east side of State Route 70 (SR70) and ends at a location just west of Highway 20, where the highway goes over the levee, near the PG&E sub- station.