USBR Patillas Dam Seismic Retrofit Design Update and Industry Outreach

Other / Unclassified

This document provides an overview of the Patillas Dam Safety Seismic Retrofit Project. The project involves constructing a large earthen berm and extending the outlet works conduit on the downstream side of the existing Patillas Dam. The dam, a semi-hydraulic fill dam completed in 1914, impounds Lake Patillas, which is used for critical power generation and municipal water supply. The project aims to address seismic vulnerabilities associated with the dam's construction method and Puerto Rico's seismic hazard.

• Overlay Berm: A zoned earthfill structure requiring approximately 600,000 cubic yards of commercially sourced material. Includes a 24-inch HDPE toe drain system and a key trench at the downstream toe requiring dewatering.
• Instrumentation: Installation of temporary and permanent instrumentation, including inclinometers, vibrating wire pressure transducers, piezometers, and settlement monitoring points.
• Outlet Works Extension: Requires a diver-installed bulkhead at the base of the gate tower, installed through a 24-inch square manhole at over 90 feet depth. The bulkhead design will be based on high-resolution 3D photogrammetric scans and dive reports.
• Demolition & Replacement: Demolition of existing discharge and conveyance features, including the outlet works conduit, forebays, canal overflow, and an abandoned power generating building. Replacement with a new 54-inch concrete encased steel conduit with a 36-inch steel bifurcation for canal releases.
• Tunnel Work: Demolition and construction of the first approximately 320 feet of the 54-inch outlet works within an existing 20-foot diameter horseshoe-shaped tunnel, which will then be backfilled with controlled low strength material (CLSM).
• New Buildings: Construction of two new concrete buildings to house gates for the 54-inch conduit and valves for the 36-inch conduit.
• Temporary Bypass: A contractor-designed temporary bypass is required to provide up to 25 cfs of uninterrupted canal deliveries during the transition from bulkhead installation to new outlet works commissioning.

This document explicitly states, "This is not a solicitation of any offers or bids. Funds are not presently available for this effort. No award will be made under this solicitation until funds are available. The Government reserves the right to cancel this solicitation, either before or after the closing date. In the event the project is cancelled, there is no obligation to reimburse an offeror for any costs."

This document provides essential technical details and scope for potential bidders interested in the Patillas Dam Seismic Retrofit Project. It outlines the physical work, materials, and specific construction challenges involved. However, it is crucial to note that this is not a solicitation, and funds are not currently available.

Other / Unclassified

This document announces an Industry Outreach Event hosted by the USACE Caribbean District regarding the Patillas Dam Seismic Retrofit Project. The event is scheduled for June 11-12, 2026, and aims to share design updates.

Potential bidders can gain insight into the project, build connections with the USACE Caribbean District, and ask questions. The event includes a registration and project presentation on June 11, and a Patillas Dam site visit on June 12. Interested parties are encouraged to scan the provided QR code for more details.

Other / Unclassified

This document announces an upcoming two-day industry outreach event hosted by the U.S. Bureau of Reclamation (USBR) and supported by the U.S. Army Corps of Engineers (USACE) Caribbean District. The event focuses on the Patillas Dam Seismic Retrofit Project in Puerto Rico.

This event is designed to engage industry partners in preparation for significant upcoming construction and infrastructure efforts. It will provide a detailed design update, allow for industry questions, and include a site visit to the Patillas Dam. The outreach aims to help companies understand the project's technical requirements, including seismic retrofit measures, outlet works reconstruction, and complex construction sequencing, aiding in future acquisition planning.

• Dates: June 11-12
• Location: USACE Caribbean District offices, San Juan, PR (June 11); Patillas Dam site visit (June 12)
• Activities: Registration, Project Presentation & Industry Input Session, guided site visit.
• Purpose: Early coordination with industry, understanding technical requirements, and preparing for acquisition planning.

Other / Unclassified

This document is an informational flyer for the Patillas Dam Safety Seismic Modification Project. It outlines the project's purpose, which is to strengthen the structural and operational resilience of the historic Patillas Dam by addressing seismic vulnerabilities, ensuring water supply reliability, and supporting power generation.

• Construction of a zoned earthfill berm (~600,000 cubic yards).

• Use of commercially sourced materials for engineered zones.

• Installation of engineered drainage systems, including a 24-inch HDPE toe drain.

• Excavation of a key trench (~35 ft) with foundation dewatering.

• Installation of advanced instrumentation (inclinometers, piezometers, pressure transducers, settlement points).

• Demolition and reconstruction of downstream discharge facilities, canal overflow, forebays, and former power building.

• Installation of a new 54-inch concrete-encased steel conduit with a 36-inch bifurcation.

• Reconstruction of outlet works within the existing horseshoe tunnel and backfill with CLSM.

• Extension of outlet works (~200 feet) requiring diver-installed temporary bulkheads.

• Construction of two new concrete control buildings for gates and valves.

• Implementation of a temporary bypass system for uninterrupted canal flows during outlet works construction.

• Reduces seismic risk to downstream communities.

• Ensures dependable municipal water supply.

• Supports reliable downstream power generation.

• Modernizes critical water infrastructure.

This flyer explicitly states: "NOTICE: This is not a solicitation of any offers or bids. Funds are not presently available for this effort. No award will be made under this solicitation until funds are available. The Government reserves the right to cancel this solicitation, either before or after the closing date. In the event the project is cancelled, there is no obligation to reimburse an offeror for any costs." Therefore, this document serves as an informational notice only and does not represent an active procurement opportunity at this time.