Y--GRCA 318719_Temporary WWTP at North Rim

The National Park Service (NPS) is issuing a pre-solicitation notice for the construction of a temporary wastewater treatment plant (WWTP) at the North Rim of Grand Canyon National Park, Arizona. This project, classified under NAICS Code 237110, is a total Small Business Set-Aside with an estimated value over $10 million. The temporary WWTP will support visitor facilities and campgrounds during reconstruction of the permanent wastewater system, ensuring compliance with Arizona Department of Environmental Quality standards. The estimated period of performance is 420 calendar days. The solicitation, identified as 140P2026R0075, is expected around June 2026 and will be available on www.SAM.gov. Prospective offerors must have an active SAM registration and a DUNS number. This is an unfunded requirement, with a contract award contingent upon fund availability. A pre-proposal meeting may be announced later.

This federal contract document is Amendment 02 to Solicitation Number 140P2026R0075, issued by the Department of the Interior, National Park Service (NPS), Denver Service Center Contracting Services Division. The solicitation is for project GRCA 318719, which involves the installation of a temporary wastewater treatment plant (WWTP). The primary purpose of this amendment, effective June 12, 2026, is to provide the attendee list from the pre-bid meeting held on June 23, 2026. All other terms and conditions of the original solicitation remain unchanged. Offers must acknowledge receipt of this amendment prior to the specified deadline to avoid potential rejection of their proposals. Acknowledgment can be completed by returning signed copies of the amendment, noting receipt on the submitted offer, or sending a separate communication referencing the solicitation and amendment numbers.

This document is an official sign-in sheet from the United States Department of the Interior, National Park Service (NPS) Denver Service Center. Dated March 23, 2026, the sheet records attendees for a site visit or pre-bid meeting associated with the project "GrLA 318719 Temp WWTP" (Temporary Wastewater Treatment Plant). The document captures the names, company affiliations, and email addresses of participants representing both the federal government and private contracting firms. Representatives from the National Park Service (NPS) were present to oversee the meeting. Participating private sector companies bidding on or interested in the task order include TEPA, ORCOM, Stronghold (SEI), Creative Builds, GSE Construction, JMG Constructors, Cannon and Wendt Electric, Lectra-Serv (LSI), Certerra, 134 Enterprises, and Thompson Heating and Cooling. This sign-in sheet serves as an official record of interested parties and potential subcontractors for the federal wastewater treatment plant project.

Amendment 01 to solicitation 140P2026R0075 for the GRCA 318719 Temporary WWTP Installation clarifies details for a pre-bid site visit on June 23, 2026, at 10:00 AM local time on the North Rim. A map titled "GRCA 318719 Temporary WWTP Pre-Bid Map" is incorporated to guide attendees to the meeting area. Prospective attendees must RSVP via email to james_waller@ios.doi.gov and kristin_tauber@ios.doi.gov, providing names, emails, and firm representation. The proposal due date remains unchanged. All other terms and conditions of the original solicitation are still in effect. This amendment ensures offerors have necessary information for the site visit and confirms the timeline for proposals.

The document outlines a pre-bid site visit for the GRCA 318719 Temporary WWTP project, scheduled for June 23, 2026, at 10 AM. It provides essential information for contractors, including site conduct rules such as

The National Park Service (NPS), DSC Contracting Services Division, has issued Solicitation Number 140P2026R0075, an Invitation for Bid (IFB) for the GRCA 318719 project: Installation of Temp WWTP. This acquisition is a Small Business Set-Aside with a magnitude of construction exceeding $10 million. The solicitation was issued on June 12, 2026, with offers due by July 15, 2026, at 17:00 local time. The government requires performance to begin within a negotiable number of calendar days after award and completed within 420 calendar days after receiving notice to proceed. Performance and payment bonds are required, and offers must remain open for 90 calendar days for government acceptance. A pre-proposal site visit is encouraged, and all federal, state, and local taxes must be included in proposals. This is currently an unfunded requirement, with a contract award contingent upon fund availability. Offers and questions are to be submitted as per Section 'L' of the solicitation.

The North Rim - Grand Canyon National Park project involves the design and construction of a Temporary Wastewater Treatment Plant (WWTP) by HDR Engineering, Inc. The project includes an Equipment Pad Plan, an Influent Screening Channel, and detailed architectural plans for Chemical Storage Containers and Chemical and Storage Containers. Key components encompass cast-in-place site pads and stoops, temporary treatment equipment, chemical storage buildings, precast channels for screens, and davit crane bases. The project also details various sections of the influent screening vault, influent lift station, equalization tank, MBR unit, UV disinfection, and chemical storage containers, emphasizing structural, mechanical, and architectural coordination. The units are refurbished, insulated shipping containers, fitted with chemical-resistant panels and flooring, and painted to match park standards. This comprehensive project ensures a functional and compliant temporary wastewater treatment system.

This government file, "General Decision Number: AZ20260056 05/18/2026," outlines prevailing wage rates for heavy construction projects in Coconino County, Arizona, excluding dam construction. It lists various classifications of electricians, power equipment operators, laborers, carpenters, and truck drivers, along with their respective hourly rates and fringe benefits. The document also includes important notes regarding Executive Orders 13706 and 13658, which mandate paid sick leave and minimum wage requirements for federal contractors subject to the Davis-Bacon Act. It details the process for adding unlisted job classifications and explains the different rate identifiers (Union, Union Average, Survey, and State Adopted Rates). Finally, the file describes the wage determination appeals process for interested parties who disagree with initial decisions, including contact information for the WHD Branch of Wage Surveys, the WHD Branch of Construction Wage Determinations, the Wage and Hour Administrator, and the Administrative Review Board.

The document, likely part of a government RFP or grant, details engineering and construction plans with HDR Engineering, Inc. as the prime contractor in Denver, CO, with a project completion date of June 2026. It includes technical specifications for construction elements such as various slope ratios (3:1), minimum dimensions for structural components (e.g., 18" min, 42" min, 1-1/2", 3" min, 6" min, 2'-6" min, 12" min), and material thicknesses (e.g., 6" and 4"). A significant portion focuses on construction site access and staging, outlining requirements for a stabilized staging area with granular material (gravel or recycled concrete) at least 3" thick. It specifies the use of a construction fence, a VTC (Vehicle Turnaround Control) at the entrance, and a 3'-6" riprap. The plan also details signage (

The National Park Service (NPS) - Denver Service Center (DSC) is soliciting proposals for the "Rehabilitate North Rim Utility Infrastructure - Temporary Wastewater Treatment Plant" project at Grand Canyon National Park, identified by Solicitation Number PARK - PMIS: GRCA 318719. The project requires offerors to submit pricing for all Base line items and any option line items. The Contract Price Schedule outlines key line items including Site Work, Utilities, Septage Receiving, Screening, Lift Stations; Two Storage Containers and a Mobile Certified WW Lab; Two Membrane Package Treatment Systems with EQ, UV; Startup, Commissioning, Operate, Winter Shut Down; and End Season Pumping and Off-Site Disposal. Pricing must adhere to specific instructions: provide total prices for lump-sum items, and unit and extended total prices for unit-priced items, with unit price governing in case of calculation errors. Totals and extended prices are to be rounded to whole dollars. This document serves as a request for proposal detailing the scope and pricing requirements for critical wastewater treatment infrastructure rehabilitation.

This document is Amendment 0003 to Federal Solicitation 140P2026R0075, issued by the National Park Service (NPS) Denver Service Center (DSC) Contracting Services Division. The solicitation is for project "GRCA 318719, Installation of Temp WWTP" (Grand Canyon National Park). The primary purposes of this amendment are to: 1. Extend the proposal submission deadline to July 29, 2026, at 12:00 PM MDT, noting that further extensions are unlikely. 2. Establish a final deadline of July 10, 2026, for submitting questions, after which inquiries may not be answered. All other terms and conditions of the original solicitation remain unchanged. Offerors must acknowledge receipt of this amendment prior to the proposal deadline to avoid potential rejection of their offers.

The Project Experience Questionnaire (Solicitation: 140P2025R0087) is a crucial document for offerors to detail their project experience relevant to a government solicitation. It requires companies to provide comprehensive information about past projects, including project titles, locations, descriptions, and owner details. The questionnaire also mandates a list of all contractors involved, their roles, trades, original and final prices, and performance periods. Offerors must respond to specific questions about the work performed, how it addresses solicitation elements, reasons for price and schedule changes, problems encountered and resolved, and successful means and methods. This document is designed to help the government evaluate an offeror's qualifications and past performance for federal RFPs, ensuring that proposed contractors have the necessary experience to successfully execute the project.

This government file is a report template for tracking compliance with limitations on subcontracting for small business, 8(a), and other socio-economic set-aside service contracts, including construction, priced at or above $150,000. It requires prime contractors to detail the amounts invoiced by them, similarly situated subcontractors (SSS), and non-similarly situated subcontractors (NSS). The template calculates the participation percentages for both prime/SSS and NSS, and flags non-compliance with clauses like 52.219-3, 14, 27, 29, 30. If non-compliance occurs, a corrective action plan is required. The report specifies maximum subcontracting percentages for NSS based on the type of service (50% for services except construction, 85% for general construction, and 75% for special trade construction).

The Past Performance Questionnaire (Solicitation No. 140P20XXRXXXX) is a critical document for federal government RFPs, designed to gather and evaluate contractor performance on past projects. It instructs offerors to complete their information and contract details, then have a reference complete sections on evaluation criteria and transmit it to the Contracting Officer. The questionnaire emphasizes that the information is for source selection only and cannot be used for advertising or implying government endorsement. Key evaluation areas include Quality, Schedule & Time Management, Cost Control, Management, Small Business Subcontracting & Labor Standards, and Regulatory Compliance, each with specific sub-criteria and a rating scale from Exceptional to Unsatisfactory. The document concludes with an overall recommendation for similar contracts and instructions for its return.

The Standard Form 24 (REV. 10/2023) is a Bid Bond form used when a bid guaranty is required in federal government RFPs, federal grants, or state and local RFPs. It outlines the obligations of the Principal (bidder) and Surety(ies) to the United States of America, ensuring that if the Principal's bid is accepted, they will execute the necessary contractual documents and provide required bonds. Failure to do so obligates the Principal to pay the Government any costs exceeding the bid amount for procuring the work. The form details conditions under which the obligation becomes void, primarily upon the Principal's timely execution of contracts and bonds. It also specifies requirements for sureties, including their appearance on the Department of the Treasury's approved list for corporate sureties, the handling of co-surety arrangements, and the submission of an Affidavit of Individual Surety (Standard Form 28) for individual sureties. Instructions for completing the form cover legal names, addresses, organizational types, penal sum as a percentage of bid price, and appropriate seals and signatures. The document also includes a Paperwork Reduction Act Statement, indicating the OMB control number and estimated time burden for completion.

The document, "B08 Solicitation PSP Vol II Equals v1 2025Feb - PROPOSED EQUALS," outlines the procedures and requirements for contractors to propose equal or substitute products in government solicitations, specifically referencing Provision 52.211-06 (Section L). Contractors must certify that proposed equal products are superior or equal to specified salient characteristics, offer the same warranties, are compatible with interfacing items, and that the contractor will coordinate installation and waive additional expenses due to substitution. The document encourages the submission of products exceeding accessibility standards, or those that are sustainable, recycled, or environmentally responsible, with an emphasis on approving such materials. This ensures proposed substitutions meet rigorous standards while promoting sustainability and accessibility within government projects.

This government form, titled "General References," is designed for offerors to provide the Government with essential contact and account information for various entities. It requires details for a surety, two corporate banks, an insurance company, three subcontractors, and three material suppliers. Offerors must include names, addresses, agent names, telephone numbers (with area codes), and specific details like types of accounts, policies, or materials/specialized work. A critical instruction emphasizes the disclosure of any less-than-satisfactory relationships with references, along with explanations of remedial actions taken or planned. Failure to be candid in this regard may lead to an unfavorable assessment of the offeror's past performance record.

The Grand Canyon National Park's "GRCA 318719 North Rim Temporary Wastewater Treatment Plant" project manual outlines the construction of a 90,000 gpd membrane wastewater treatment system. The project, managed by HDR, includes site grading, utility installation, two MBR treatment units, a treated effluent break tank, and a UV disinfection system. It also covers conditioned storage and a mobile lab, along with six months of operational support, commissioning, and end-of-season tank pumping and biosolids removal. The manual details contractor responsibilities, emphasizing coordination with other concurrent projects, site use restrictions, environmental protection, and strict adherence to administrative and procedural requirements for contract modifications and submittals. Engineer seals and signatures are provided for various specification divisions.

The document provides a comprehensive sheet index, abbreviations list, and legend for the "Rehabilitate North Rim Infrastructure" project at Grand Canyon National Park, a UNESCO World Heritage Site. Dated June 2026, the project is designed by HDR Engineering, Inc. and focuses on a Temporary Wastewater Treatment Plant (WWTP). The sheet index details 90 drawings across various disciplines, including general, civil, structural, architectural, process, mechanical, electrical, and instrumentation and controls. Key areas covered include overall site plans, grading, yard piping, structural details for pads and retaining walls, architectural plans, and detailed process schematics for various treatment units (e.g., influent screening, MBR, UV disinfection, chemical storage). The abbreviations section defines a vast array of terms used throughout the contract drawings, while the legend outlines general line styles, symbology, tagging conventions, and material representations for filled regions and surfaces. The project also covers pipelines and power distribution systems within the North Rim area, including connections to the Roaring Springs Pumphouse (RSPH) and Manzanita. This file serves as a foundational guide for the extensive infrastructure rehabilitation, ensuring clarity and standardization across all project documentation.

The provided government file, comprising pages 7 through 13 of a 90-page document, consistently identifies HDR Engineering, Inc. of Denver, CO 80202 as the "PRIME" entity, with a recurring date of "JUNE 2026." Each page contains various alphanumeric characters and abbreviations such as "E," "TR," "SF," and "CF," which appear to be technical notations or codes. The inclusion of "SURVEY NOTES" on page 9 suggests the document pertains to engineering or survey-related work. Given the context of government RFPs, federal grants, and state/local RFPs, this excerpt likely represents a section of a larger proposal, report, or project documentation submitted by HDR Engineering, Inc., outlining project details, timelines, or specifications related to their prime contractor role, possibly for a project scheduled to conclude or be reviewed by June 2026.

This document is Amendment 0004 for Solicitation 140P2026R0075, issued by the National Park Service (NPS) Denver Service Center Contracting Services Division. The solicitation is for project "GRCA 318719, Installation of Temp WWTP" (Temporary Wastewater Treatment Plant) at the Grand Canyon National Park North Rim. The primary purpose of Amendment 04 is to: 1. Incorporate formal Questions and Answers dated July 10, 2026. 2. Incorporate a geotechnical report titled "GRCA 318719_North Rim GIR_20250811." The amendment was issued on June 12, 2026, by Contracting Officer James Waller. All other terms and conditions of the original solicitation remain unchanged. Offerors are required to acknowledge receipt of this amendment prior to the specified hour and date for receipt of offers to avoid potential rejection of their proposals.

This Geotechnical Investigation Report, prepared by GEI Consultants, Inc. for HDR Engineering, Inc., supports the National Park Service's project (GRCA 318719) to rehabilitate the North Rim utility infrastructure at Grand Canyon National Park, Arizona. The project entails upgrading drinking water treatment facilities, rehabilitating wastewater treatment systems, installing new raw water tanks, and routing a new utility pipeline. GEI's multi-phase investigation included 32 geotechnical borings, laboratory testing, percolation tests, a test pit, and a geophysical Electrical Resistivity Tomography (ERT) survey. The subsurface profile consists of existing fill near the Wastewater Treatment Plant (WWTP), residual soils (residuum) weathered from limestone, and Kaibab Formation sandy limestone bedrock. Although minor dissolution features (enlarged joints) were identified, the ERT survey ruled out significant shallow karst-related subsidence hazards. No groundwater was encountered. The report recommends supporting the proposed structures—including the WWTP additions, a new Water Treatment Plant (WTP), and raw water tanks—on shallow foundations (spread footings or mat foundations) bearing on a minimum 1-foot layer of compacted Select Fill to prevent point loading from bedrock pinnacles. Foundations at the WWTP require overexcavation to remove existing fill down to competent residuum. The document also provides specific design criteria for lateral earth pressures, a 10-foot-high mechanically stabilized earth (MSE) retaining wall, pavement sections, seismic site classification (Site Class C), and pipeline parameters such as thrust restraint and modulus of soil reaction. Lastly, it outlines critical construction considerations, including OSHA soil classifications for temporary excavations, rock-trenching methods for hard bedrock, and clay trench plugs to control surface water migration.

This federal government document details Amendment 03 for Solicitation# 140P2026R0075, which covers the construction and operation of a Temporary Waste Water Treatment Plant (TWWTP) at the Grand Canyon National Rim (GRCA 318719). The document clarifies technical, logistical, and scheduling questions for prospective contractors while providing critical solicitation updates. Key clarifications and updates include: - **Project Timeline and Performance:** The proposal due date is extended to July 29, 2026. The overall performance period is 420 calendar days from the Notice to Proceed (assumed to be September 30, 2026). However, the contractor must complete construction, testing, and obtain Arizona Department of Environmental Quality (ADEQ) operational approval by June 1, 2027. Failure to meet this milestone will result in liquidated damages of $3,517.00 per calendar day. - **Utility Constraints:** Existing potable water, sewer, and electric services are currently unavailable due to prior wildfire damage. They will be restored under a separate contract (GRCA 352119) with an estimated completion between September 2026 and June 2027. Contractors must plan for temporary utility disruptions until these systems are operational. - **Equipment and Technical Scope:** Contractors must purchase (rather than rent) the Temporary Lab Trailer, which will become government property. Resumes are required for all five Key Personnel, and technical experience project templates are excluded from the proposal page limit. Additionally, the system will utilize a localized HMI system rather than a full SCADA historian.

This government Request for Proposal (RFP) (Solicitation No. 140P2026R0075) is issued by the National Park Service (NPS), Denver Service Center (DSC) for the installation of a temporary Wastewater Treatment Plant (WWTP) at Grand Canyon National Park, Arizona. The project, designated GRCA 318719, is a Small Business Set Aside with an estimated construction magnitude exceeding $10 million. The scope includes installing a 90,000 gpd temporary WWTP with headworks, two 45,000 gpd MBR treatment units, an equalization tank, UV disinfection, and temporary chemical/laboratory storage units, along with connecting to existing utilities. Key aspects include a mandatory performance period of 420 calendar days after notice to proceed, liquidated damages of $3,517.00 per day for delays, and a requirement for performance and payment bonds. The RFP outlines detailed instructions for offerors, including proposal submission requirements, a pre-proposal site visit, electronic invoicing via the IPP system, and specific clauses regarding key personnel, key trades, and compliance with various Federal Acquisition Regulations (FAR) and Department of the Interior Acquisition Regulations (DIAR) related to inspection, schedules, payment, labor standards, and environmental protection. This is currently an unfunded requirement with a high expectation that funds will be available for contract award.