Industry Day Announcement.pdf

0DEPARTMENT OF THE ARMY

CORPS OF ENGINEERS, BALTIMORE DISTRICT

2 HOPKINS PLAZA

BALTIMORE, MD 21201

CONTRACT OPPORTUNITY

ALVIN BUSH DAM ROCK WALL STABILIZATION PROJECT

NOTICE ID

W912DR25X18N9

DEPARTMENT/IND. AGENCY

DEPARTMENT OF DEFENSE

SUBTIER

DEPARTMENT OF THE ARMY

MAJOR COMMAND

US ARMY CORPS OF ENGINEERS

SUB COMMAND

NORTH ATLANTIC DISTRICT

OFFICE

W2SD ENDIST BALTIMORE

CLASSIFICATION

PRODUCT SERVICE CODE: Y1PZ - CONSTRUCTION OF OTHER NON-BUILDING FACILITIES

NAICS CODE: 237990 OTHER HEAVY AND CIVIL ENGINEERING CONSTRUCTION

PLACE OF PERFORMANCE: CLINTON COUNTY, PENNSYLVANIA, USA

DESCRIPTION

TITLE: ALVIN BUSH DAM ROCK WALL STABILIZATION PROJECT - Kettle Creek in Clinton County, PA

SOLICITATION NO.: TBD

This Special Notice is not a Request for Proposal, Request for Quote, or Invitation for Bid. There is no commitment by the Government to issue a solicitation, make awards, or pay for respondent's expenditures made in response to this notice. Interested vendors are responsible for monitoring this notice for any subsequent amendments. Any solicitation issued as a result of this notice will be in a separate announcement.

Special Industry Day Announcement: The U.S. Army Corps of Engineers (USACE) invites industry professionals to attend an upcoming Industry Day Event. This is a virtual event. If you require a one-on-one discussion, please email the POCs below.

This virtual event aims to engage industry experts on the upcoming requirement involving construction services for the Alvin Bush Dam Rock Wall Stabilization Project in Clinton County, PA. Specifically, USACE seeks industry feedback on market conditions in the project area and project labor agreements (PLAs) in order to optimize value for the Government while fulfilling USACE mission requirements. Participants will be encouraged to provide input on their experience with PLAs and any anticipated impacts on project costs.

RSVP information: Individuals interested in attending the virtual Industry Day MUST register in advance by submitting their Name, Title, Company Name, and Company Unique Entity Identifier to Trahon Battle via email at trahon.d.battle@usace.army.mil and Sharon Alexander, sharon.l.alexander@usace.army.mil no later than 2:00 PM EST on October 6, 2025. The Industry Day will begin at 10:00 AM EST on October 8, 2025. We will provide the Microsoft Teams link upon receiving your request to attend the industry day.

PROJECT DESCRIPTION: The Alvin Bush Dam Rock Wall Stabilization Project is located at Alvin Bush Dam on Kettle Creek in Clinton County, PA. The dam falls within the Susquehanna River Basin and is approximately 30 miles northwest of Lock Haven, PA. Kettle Creek joins the West Branch of the Susquehanna River at Westport, 15 river miles above Renovo and 112 river miles above the mouth of West Branch of the Susquehanna.

Original construction of the Alvin Bush Dam began in 1959 and was operationally completed in 1962. It is owned, operated, and maintained by the USACE, Baltimore District. Primary features of the dam include an earthen embankment; an uncontrolled spillway with concrete weir; and a gated outlet consisting of a control tower and concrete lined tunnel through bedrock.

The embankment is zoned with a maximum height of 165 ft. and length of 1,350 ft. The spillway was excavated into rock during original construction of the dam, is made of concrete and measures 250 ft. wide across the crest. An access bridge approximately 550 ft. downstream of the spillway crosses the spillway channel and is the only means of access to the project site during times of high discharge. Bordering the top of the spillway excavation on the right side is Kettle Creek Road (State Route 4001). This spillway wall was only concrete lined at the weir otherwise utilized the existing rock face. This rock face is deteriorating and has nearly eroded back to the state roadway. This is caused by erodible areas of weathered rock collapsing into the spillway channel. This process is accelerated by water runoff over the face of the spillway wall and groundwater seepage combined with freeze/thaw cycles. This progressive erosion has threatened to damage the shoulder and undermine the road.

Similar to the spillway area, the rock walls of the dam’s primary outlet channel have deteriorated due to the erosion of weathered zones which results in the collapse of overlying blocks.

Additionally, flow from the tunnel outlet erodes rock at the base of the channel downstream of the low concrete walls, allowing more fall in. In 1986, shotcrete was applied to the face of the walls approximately 60 ft. downstream in order to stabilize the walls. Some vertical rock bolts (believed to be shallow) were installed around the perimeter of the cut, along with slush grouting of the ground surface to limit infiltration. Chain link fencing, held in place by rock bolts into the face, covers the shotcrete area (installation date uncertain). This system however has currently failed, leading to further erosion and large rocks falling off the face of the walls, creating an unsafe environment.

The main feature of work for this stabilization project includes the installation of anchored, reinforced concrete liner walls against the exposed rock faces at both the spillway and outlet channel. The concrete liner walls will be constructed to effectively protect the weak rock face from exposure and weathering and will restrain movement of localized areas of rock thereby maintaining the stability. Rock excavation by line drilling 3-inch diameter holes at maximum 6-inch spacing will be required along the alignment of the new walls to allow the concrete to be placed uniformly along and directly against the finished rock face alignment. Rock anchors are required to increase the stability of both the proposed concrete liner wall, and bedrock blocks or wedges that have a potential of failing. To establish the rock anchor design, a non-traditional method was utilized due to the extended size (both length and height) of the concrete wall. The anchor type selected for this project is a high-strength (150 ksi) all-thread anchor bar with pre-assembled double-corrosion protection. The anchor holes will be drilled normal to the slope/wall at downward 4:1 batter. A minimum anchor hole diameter of 4-1/2" is needed to accommodate the design anchor sizes with corrosion protection. The anchor hole will be pressure tested and pre-grouted to assure watertightness prior to installation. After installation, the anchor will be single stage grouted and tensioned once the required grout strength is achieved. The bearing plate is located within a concrete block-out, located one foot beneath the concrete wall surface. This anchor type and installation method reduces costs while providing adequate stability. The 45-foot wall height design requires 165 kips of individual anchor load, which is satisfied using a 1-3/4" dia.

bar size, the 38-foot wall height design requires 142 kips of individual anchor load, which is satisfied using a 1-3/8" dia. bar anchor, the 32-foot wall height design requires 112.5 kips of individual anchor load, which is satisfied using a 1-1/4" dia. bar anchor.

Additional features to be constructed include installing a new concrete ditch along the edge of the state roadway adjacent to the top of the right wall of the spillway, installing a new concrete headwall to the end of an existing 18 in. pipe, constructing a permanent access road into the spillway, and constructing new stairs and a ladder in order to safely access the outlet channel.