Renovation of a water / sewer project in Enumclaw, Washington. Working plans call for the renovation of a water / sewer project.

On or about 17 October 2024, the Government intends to issue a solicitation for "Mud Mountain Dam (MMD) Lower Cascade Creek Water Control Facility". The solicitation will close on or about 03 Dec 2024. The solicitation is restricted to Small Business participation only. SITE VISIT: A Site Visit will be scheduled and additional information regarding the site visit will be provided in the solicitation via FAR Clause 52.236-27. The site visit till take place on 24 Oct 2024 at 10:30. BACKGROUND: Mud Mountain Dam is a zoned earth and rockfill structure with an 810-foot-long crest and a maximum height of 432 feet above bedrock. The structural height of 427 feet is measured from the bottom of a structural depression located approximately 170 feet upstream of the cutoff wall to the new top of dam at 1,257 feet NGVD29. The dam is 1,600 feet wide at the base, 25.5 feet wide at the crest, with a design crest elevation of 1,257 feet NGVD29. A concrete seepage cutoff wall extends from the crest into bedrock in the core of the dam. Mud Mountain Dam is constructed in a narrow canyon where rock walls on both sides of the gorge rise almost vertically to a height of nearly 275 feet above the White River channel. The upstream hillside slope at the left abutment is steep (approximately1:1). Lower Cascade Creek (LCC) drains into an existing Water Control System (WCS) consisting of debris screens, a concrete lined catch basin and pipes which convey flow along the upstream left groin to the pool. The upstream groin is armored with shotcrete to approximate EL 1167.8 feet (NAVD88). The catch basin and embankment abutment tie-in are separated by roughly 51 feet of sandy-gravel fill between EL 1,267.8 feet (NAVD88) (basin) and 1,264.3 feet (NAVD88) (crest). The current WCS was not designed to a handle a specific flow or event with a defined return interval, because there is very little available hydrologic data on flow-frequency for LCC. Rather, the existing inlet basin was constructed to address recurring erosion caused by flows from past events along the upstream groin. This lack of a specific design event or flow has led to failure to control flows at the inlet even without debris accumulation. The LCC watershed is approximately 0.4 square miles or 0.1 percent of the Mud Mountain Dam watershed. Additionally, the watershed for LCC is immediately adjacent to the dam making it very likely that a large precipitation event would load both watersheds as it moves across the region. Due to the size and nature of the watershed, peak flows on LCC occur sooner and have a shorter duration than those observed on the White River. Consequently, high flows occur on LCC before much of the precipitation in the White River basin concentrates and begins to raise the reservoir. PROJECT DESCRIPTION: The purpose of this project is to replace an outdated and inefficient water control structure incapable of containing high water volumes from LCC. In 2009, a flood event overtopped the water control structure, and uncontrolled creek flows eroded both the upstream and downstream left groin of the dam causing extended disruption to project operations. A draft Scope of Work is attached. The Contractor will be required to commence work upon receipt of contract award and complete the work in the construction window of 01 March 2025 through 30 OCT 2025, this is subject to change after solicitation issuance. ESTIMATED CONSTRUCTION COSTS: In accordance with DFARS 236.204(ii) "Disclosure of the Magnitude of Construction Projects," Magnitude of Construction is estimated to be between $10,000,000 and $25,000,000. NAICS CODE: The Primary North American Industry Classification System (NAICS) code anticipated for solicitation is 237990 - Other Heavy and Civil Engineering Construction with a Small Business Size Standard of $45 Million. The Product and Service Code (PSC) is Y1PZ-Construction of Other Non-Building Facilities. OBTAINING SOLICITATION DOCUMENTS: Solicitation documents will be posted to the web via SAM.gov. The solicitation number is W912DW25B0003. CONTRACTING OFFICE ADDRESS: USACE Seattle District 4735 E. Marginal Way S., Bldg. 1202 Seattle, WA 98134-2388 POINT OF CONTACT: All questions shall be submitted on ProjNet (ProjNet access, and additional guidance, will be given at time of solicitation issuance). PLACE OF PERFORMANCE: Mud Mountain Dam 30525 SE Mud Mountain Rd. Enumclaw, WA 98022-8010 County: King NOTE: Offerors please be advised that an online registration requirement in System for Award Management (SAM) database http://www.sam.gov/ exists and directed solicitation provisions concerning electronic annual Representations and Certifications on SAM. Representations and certifications are required to be up-dated annually as a minimum to keep information current, accurate and complete. The electronic annual representations and certifications are effective for one year from date of submission or update to SAM. Solicitation documents will be posted to the web via SAM.gov. Registration is required to access solicitation documents. SAM.gov provides secure access to acquisition-related information, synopsis or pre-solicitation notices and amendments. Registration is also required to submit bids in Procurement Integrated Enterprise Environment (PIEE) Procurement Integrated Enterprise Environment (eb.mil). PIEE is the only acceptable place for bid submittal. The Method of Contractor Selection has not been determined at this Time. *The value for this project is based on a financial range. The value is listed as the highest possible cost from the range provided by a stakeholder or official project document.