This Solicitation opportunity from Maryland was posted on October 26, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.
The Board of Commissioners for Charles County, Maryland, is soliciting bids for construction services to improve the Cobb Island and Hill Road sewage pump stations. The scope of work involves the demolition of existing mechanical and electrical equipment from the 1980s and the installation of new process mechanical piping, submersible pumps, HVAC, electrical and control systems, and interior coatings for wet wells and valve vaults. Additional requirements include the installation of new odor control systems, electrical and instrumentation canopies, and civil site work encompassing temporary bypass pumping, erosion and sediment control, final grading, and paving. Specific technical mandates include the use of Type 316 stainless steel for hardware inside manholes and wet wells, and compliance with NEC Class I, Division 1, Group C and D standards for hazardous locations.
The contract will be awarded to the lowest responsive and responsible bidder based on the sum of base bid items and contingency items. Bidders must provide a five percent bid bond and demonstrate technical competency through an experience form listing three similar projects. The project is subject to Maryland state law, prevailing wage requirements, and a 9.5 percent MWBE goal. Once awarded, the contractor must submit a schedule of values within ten days of the construction schedule. Payments are issued monthly, subject to a five percent deduction. The completed work is subject to a one-year warranty from the date of final acceptance, and the contractor must provide performance and labor bonds to guarantee fulfillment of the contract.
General Info
Charles County seeks bids for sewage pump station improvements at Cobb Island and Hill.
HighAI Summary for #27-010 Cobb Island and Hill Road Pump Station Improvements: Invitation to Bid (ITB) issued by Charles County Government on September 24, 2026, for construction services to improve the Cobb Island and Hill Road sewage pump stations. The scope includes demolition, mechanical piping, electrical work, and system integration. Bids are due electronically by October 28, 2026, at 11:00 am.
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HighAI Summary for CI Manhole Attachment 1: Technical attachment regarding Cast Iron (CI) Manhole specifications. The document provides factual requirements and standards for manhole installation or materials.
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PDF, High priority: read this firstitb
HighAI Summary for Cobb Island and Hill Road Pump Station Improvements (#27-010): Invitation to Bid (ITB) issued by Charles County Government on September 24, 2026, for construction services to improve the Cobb Island and Hill Road sewage pump stations. The scope includes demolition, mechanical piping, electrical work, and system integration. Responses are due electronically by October 30, 2026, at 11:00 am.
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PDF, High priority: read this firstifb
HighAI Summary for Cobb Island and Hill Road Pump Station Improvements (UN 1308/UN 1309): Issued September 24, 2026, by Charles County Government, this invitation for bid (#27-010) seeks qualified contractors for construction services to improve the Cobb Island and Hill Road sewage pump stations. The scope includes demolition of existing equipment, installation of new process mechanical piping and equipment, civil site work, temporary bypass pumping, electrical work, and system integration. Responses are due electronically by November 4, 2026, at 11:00 am.
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PDF, High priority: read this firstspecifications
HighAI Summary for Cobb Island Sewage Pump Station Replacements - Quality Control and Specifications: Technical specifications for the Cobb Island Sewage Pump Station Replacements in Charles County, MD. The document includes Section 01400 regarding Quality Control, covering permits, codes, and compliance, as well as technical requirements for the odor control system and FRP absorber vessel construction.
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HighAI Summary for Cobb Island Sewage Pump Station Replacements - Section 05500 Amendment: This document is an amendment to the County Standard Specification Section 05500 (Miscellaneous Metals) for the Cobb Island Sewage Pump Station Replacements in Charles County, MD. It specifies the use of Type 316 stainless steel for shapes, bars, plates, pipes, and hardware installed inside manholes or wet wells, and provides requirements for retrofit access hatches by Halliday Products or approved equals.
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PDF, High priority: read this firstspecifications
HighAI Summary for Cobb Island Sewage Pump Station Replacements - Structural Plans (Project No. UNI1308): Technical structural plans and general notes for the Cobb Island Sewage Pump Station Replacements (Project No. UNI1308) for Charles County Government. The document includes detailed demolition notes, installation requirements for sewage pumps, wet well epoxy coating specifications, and structural details for aluminum canopies and access hatches. It references specific project permits and OSHA safety standards.
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PDF, High priority: read this first28 pages · specifications
HighAI Summary for Cobb Island SPS Replacement - Drawings (Project UN-1308): Technical drawings and specifications for the Cobb Island Sewage Pump Station (SPS) replacements in Charles County, Maryland (Project No. UN-1308). The document includes structural notes for aluminum canopy framing, electrical demolition plans, wet well coating specifications, and P&ID symbols. It is certified by a Maryland Licensed Professional Engineer and dated October 2025.
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PDF, High priority: read this firstamendment
HighAI Summary for Hill Road Sewage Pump Station Replacements - Amendment 05500 Miscellaneous Metals: This document is an amendment to the County Standard Specification Section 05500 for the Hill Road Sewage Pump Station Replacements in Charles County, MD. It specifies the use of Type 316 stainless steel for shapes, bars, plates, pipes, and hardware installed inside manholes or wet wells, and provides requirements for the installation of F1R top mount access hatches by Halliday Products or approved equals.
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PDF, High priority: read this firstspecifications
HighAI Summary for Hill Road Sewage Pump Station Replacements - Quality Control and Specifications: Technical specifications for the Hill Road Sewage Pump Station Replacements in Charles County, MD. The document includes Section 01400 regarding Quality Control, permit requirements, and detailed technical parameters for the odor control system and FRP carbon absorber vessel.
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PDF, High priority: read this firstspecifications
HighAI Summary for Hill Road Swagge Pump Station Replacements - Revised Sheets S-3, M-2, and M-4: Technical drawings and specifications for the Hill Road Swagge Pump Station Replacements (Project No. UN-1309) for Charles County Government. The document includes grade level demolition plans, mechanical demolition plans (M-2), and structural details (S-3), covering the removal of pumps, piping, and the coating of wet wells. Issued under Permit # DSP-250016/DSP-250018.
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PDF, High priority: read this firstamendment
HighAI Summary for ITB 27-010 Addendum No. 2 - Cobb Island and Hill Rd Sump Pump Station Improvements: Addendum Number Two for Invitation to Bid (ITB) 27-010 regarding Cobb Island and Hill Rd Sump Pump Station Improvements. This document modifies the project timeline, extending the bid opening registration and response submission deadlines to November 4, 2026. It also adds specific technical specifications for concrete rehabilitation and miscellaneous metals to Appendices B and D for both the Cobb Island and Hill Road SPS replacements.
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HighAI Summary for ITB 27-010 Addendum Number One - Cobb Island and Hill Rd Sump Pump Station Improvements: Issued October 23, 2026, this addendum modifies Invitation to Bid (ITB) 27-010 for the Cobb Island and Hill Rd Sump Pump Station Improvements. Key changes include revised bid opening and submission deadlines (October 2026), updated bid item descriptions and calculations for borrow material contingency items (B-7 and D-7), and replacements of specific drawing sheets and specification pages across Appendices A through D regarding structural repairs and H2S loading values.
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PDF, High priority: read this first437 pages · specifications
HighAI Summary for Project No UN-1308: Cobb Island Sewage Pump Station Replacements - Specifications: Technical specifications document for the Cobb Island Sewage Pump Station Replacements in Charles County, Maryland (Project No UN-1308, PGM#DSP-250017), dated October 2025. The document includes a comprehensive table of contents covering general requirements, structural, metals, equipment, mechanical, electrical, and control systems, as well as detailed requirements for construction coordination, sequencing, and facility shutdown procedures.
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PDF, High priority: read this first437 pages · specifications
HighAI Summary for Project No UN-1309: Hill Road Sewage Pump Station Replacements - Specifications: Technical specifications document dated October 2025 for the Hill Road Sewage Pump Station Replacements in Charles County, Maryland (Project No UN-1309). The document includes a comprehensive table of contents covering general requirements, structural, metals, equipment, mechanical, electrical, and control systems, as well as detailed requirements for construction coordination, sequencing, and facility shutdown procedures.
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PDF, High priority: read this first28 pages · specifications
HighAI Summary for Project UN-1309: Hill Road SPS Replacement - Drawings: Technical drawings and general notes for the Hill Road Sewage Pump Station (SPS) replacements for the Charles County Government (Project No. UN-1309). The document includes general notes on materials, warranty (24 months), site demolition, grading plans, and utility details, as well as permit approval information (Permit #DSP-250016) and consultant certifications.
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PDF, High priority: read this first2 pages · contract-document
HighAI Summary for Sample Contract - Consecutive Number of Days Specified: This contract document between the CONTRACTOR and the CHARLES COUNTY COMMISSIONERS outlines the agreement for services related to a specified solicitation (RFQ/ITB/RFP No. ##- ##). It includes terms for the scope of work, payment, and compliance with general and special provisions. The contract specifies commencement and completion timelines based on a Notice to Proceed and requires signatures from authorized parties, including corporate seals if applicable. The document serves as a formal binding agreement for the provision of services within Charles County, Maryland.
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HighAI Summary for Section 03013 - Rehabilitation of Concrete (Cobb Island SPS): Technical specifications for the rehabilitation of concrete at the Cobb Island SPS. The document outlines the scope of work for inspecting and repairing localized concrete deterioration, defines unit price bid items for spall repair and crack injection, and details requirements for submittals, quality assurance, and compliance with ACI and ICRI standards.
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PDF, High priority: read this firstspecifications
HighAI Summary for Section 03013 - Rehabilitation of Concrete (Concrete Hill Road SPS): Technical specifications for the rehabilitation of concrete at Concrete Hill Road SPS. The document outlines the scope of work for inspecting and repairing localized concrete deterioration, including unit price bid items for spall repair and crack injection (epoxy and polyurethane). It details requirements for submittals, quality assurance, manufacturer qualifications, and compliance with ACI and ICRI standards.
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PDF, Low prioritypre-bid-minutes
LowAI Summary for ITB 27-010 Cobb Island and Hill Rd Sump Pump Station Improvements Pre-Bid Meeting Minutes: Minutes from the optional pre-bid meeting held on October 5, 2026, for ITB 27-010 regarding Cobb Island and Hill Rd Sump Pump Station Improvements for Charles County Government. The document covers procurement highlights, including a 9.5% MWBE goal and bid validity of 120 days, technical requirements for replacing aging pump station components, and a Q&A section confirming a single awardee for both locations.
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PDF, Low priorityattendance-roster
LowAI Summary for ITB 27-010 Pre-Bid Meeting Attendance Roster: Attendance roster for the pre-bid meeting held on October 5, 2026, regarding ITB 27-010 for Cobb Island and Hill Rd Sump Pump Station Improvements. Lists six attending entities, including five private companies and the Charles County Government.
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PDF, Low prioritysite-visit-roster
LowAI Summary for ITB 27-010 Site Visit Attendance Roster - Cobb Island and Hill Rd Sump Pump Station Improvements: Attendance roster for the site visit held on 10/8/2026 for solicitation ITB 27-010 regarding Cobb Island and Hill Rd Sump Pump Station Improvements. The document lists seven participating companies and their representatives.
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PDF, Low priority2 pages · bond
LowAI Summary for Performance and Labor Bonds for Charles County ITB: This document contains the Performance Bond and Contractor's Labor and Material Bond for a contract with Charles County, Maryland. It outlines the obligations of the Principal and Surety to the County, ensuring the proper performance of the contract and payment for labor and materials. The bonds reference an Invitation to Bid (ITB) number and solicitation title, though specific details are not filled in. The bonds include clauses about indemnification, waiver of notice rights, and legal sufficiency approval by the County Attorney. The document is intended to guarantee contract fulfillment and payment obligations under the contract terms and any modifications or extensions.
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PDF, Low priority7 pages · closeout-documents
LowAI Summary for Project Close Out Documents - Charles County: This document contains various closeout forms related to a construction project for Charles County, Maryland. It includes the Contractor's Affidavit of Payment of Debts and Claims (G706), Contractor's Owner Affidavit of Release of Liens, Consent of Surety Company to Final Payment, Release and Waiver of Lien forms for subcontractors and vendors, and a Guarantee Form. These documents certify payment status, lien waivers, surety consent for final payment, and guarantee workmanship and materials for one year from substantial completion. The forms are intended to finalize contractual obligations and ensure all claims and liens are resolved before project closeout.
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Timeline
2 updates
PhaseClosed
Posted
Solicitation
Deadline changed
Response deadline changed from Oct 28, 2026 to Oct 30, 2026.
Notice updated
Response deadline changed from Oct 30, 2026 to Nov 4, 2026. The notice description changed.
Response Deadline
Deadline has passed
Submission Closed
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The Board of Commissioners for Charles County seeks qualified contractors to provide construction services to improve two (2) sewage pump stations (Cobb Island and Hill Road) in Charles County, MD. The project includes but is not limited to the following: demolition of the existing mechanical and electrical equipment; new process mechanical piping, equipment; civil site work and temporary bypass pumping; electrical work; instrumentation and system integration at Cobb Island Sewage Pump Station and Hill Road Sewage Pump Station. Cobb Island Sewage Pump Station is located at 15255 Potomac River Dr. Cobb Island, Maryland. Hill Road Sewage Pump Station is located at 13250 Hill Rd. Newburg, Maryland. Official Notice #1: Optional Pre-Bid Meeting Attendance Roster and Minutes: Attachments: ITB_27-010_-_Pre_Bid_Meeting_Attendance_Roster_-_261005.pdf, ITB_27-010_-_Pre_Bid_Meeting_Minutes_-_261005.pdf Addendum #1: Please use the See What Changed link to view all the changes made by this addendum. Attachments: ITB_27-010_Addendum_1_Final_-_261023.pdf, Appendix_A_-_Revised_Sheets_S-3,_M-2,_and_M-4.pdf, Appendix_B_-_Revised_Pages_01400-1_13220-3.pdf, Appendix_D_-_Revised_Pages_01400-1_13220-3.pdf, Appendix_C_-_Revised_Sheets_S-3,_M-2,_and_M-4.pdf, CI_Manhole_Attachment_1.pdf Official Notice #2: Optional Site Visit Attendance Roster: Attachments: ITB_27-010_-_Site_Visit_Attendance_Roster_-_261008.pdf Addendum #2: Please use the See What Changed link to view all the changes made by this addendum. Attachments: ITB_27-010_Addendum_2_Final_-_261026.pdf, 03013_-_Rehabilitation_of_Concrete_Cobb_Island_SPS.pdf, 05500_Amendment_-_Miscellaneous_Metals_Cobb_Island_SPS.pdf, 03013_-_Rehabilitation_of_Concrete_Hill_Road_SPS.pdf, 05500_Amendment_-_Miscellaneous_Metals_Hill_Road_SPS.pdf
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