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Mainstream Services LLC

UEI: SLED_E290F3CF16DF9C0F

Mainstream Services LLC is a federal contractor, registered under UEI SLED_E290F3CF16DF9C0F. It has been awarded $3,563 in federal contracts. Primary work spans Unknown NAICS. Top awarding agencies include Dauphin County.

Contact Information

Registration and classification details

Registration

UEI Code

SLED_E290F3CF16DF9C0F

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

AI Capability Profile

Mainstream Services LLC provides general contracting and facility maintenance services, specializing in structural replacements and exterior renovations. Their technical expertise includes the provision of labor, materials, equipment, and supervision required for the installation and replacement of ...

Key Performance Metrics

Awards Count

1

All time

Active

0

Currently performing

Completed

0

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award Analytics & Distribution

Awards by Agency

Dauphin County$3.6K100%

Awards by NAICS

- Unknown NAICS$3.6K100%

Awards by Agency Over Time

Awards by Place of Performance

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Office Filing and Stationery SuppliesThis subcontract for Office Filing and Stationery Supplies involves providing specific filing materials to prime contractors for Dauphin County office supply projects. The scope of work includes the sourcing and delivery of letter size 1/3 cut folders, legal size 1/3 cut folders, and 5 1/4 capacity accordion pockets, all of which must adhere to Smead specifications. The contractor is responsible for managing orders based on estimated yearly usage and ensuring delivery F.O.B. Destination to the Purchasing Department located in Harrisburg, Pennsylvania. This opportunity falls under NAICS code 423430 and is managed by Dauphin County in Pennsylvania, with a response deadline set for November 24, 2026.

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2027 Office Supply Contract

Solicitation # Dauphin County Office of County Commissioners, PA

Dauphin County is soliciting sealed bids for its 2027 Office Supply Contract, with a performance period running from January 1, 2027, to December 31, 2027. The contract involves the purchase of various office supplies, including file folders, binders, writing instruments, and labels, provided on an as-needed basis. Bidders must provide pricing for all listed items, and these prices must remain firm for the duration of the contract. All items are to be delivered F.O.B. Destination to the Dauphin County Purchasing Department in Harrisburg, Pennsylvania. While most orders are expected within 48 hours, the maximum allowable delivery time is two weeks; failure to meet this window may result in the county purchasing from another source and charging the cost difference to the contractor. Proposals must be submitted electronically via the PennBid Program by November 24, 2026, at 2:00 pm. A required certified check or bid bond equal to 10 percent of the contract amount must be received by the County Controller prior to the bid closing. Submission requirements include a signed proposal page, a completed Vendor Identification form, and a Non-Collusion Affidavit. The county reserves the right to award the contract to the bidder that best meets its objectives and is not obligated to accept the lowest price. Payment terms are set at 30 days from the receipt of an invoice following inspection and acceptance. Contractors must also comply with non-discrimination laws and the Americans with Disabilities Act.

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Maintenance and Protection of Traffic (MPT) / Traffic ControlThis subcontract opportunity with Dauphin County in Pennsylvania involves the installation and management of traffic control devices for bridge maintenance projects. The selected contractor will be responsible for establishing lane closures, deploying signage, cones, and barrels, and utilizing arrow boards and temporary barriers. All work must be performed in strict accordance with Maintenance and Protection of Traffic Drawings and comply with both PENNDOT and Dauphin County traffic control standards to ensure a safe and compliant work zone. The solicitation was posted on October 15, 2026, with a response deadline of November 4, 2026. Classified under NAICS code 561990, the project is located within Dauphin County. Interested parties can find further details and submission guidelines through the provided PennBid portal.

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Reinforced Concrete Repair SpecialistThis subcontract opportunity is for a Reinforced Concrete Repair Specialist to perform structural concrete repairs for prime contractors on bridge maintenance projects within Dauphin County, Pennsylvania. The scope of work involves executing reinforced concrete repairs on bridge decks, piers, and abutments in strict accordance with PENNDOT Standard Drawing BC-783M. Key responsibilities include the removal of deteriorated concrete, the preparation of reinforcing steel, and the application of repair mortars using specialized equipment such as concrete saws, chipping hammers, and epoxy injection systems to ensure all bridge elements are structurally sound. The solicitation was posted on October 15, 2026, with a response deadline of November 4, 2026. Classified under NAICS code 238110, the project is managed under the jurisdiction of Dauphin County. Interested parties must be capable of delivering high-quality reinforced concrete repairs that meet all specified technical standards for the designated performance area.

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Concrete Material SupplierThis subcontract opportunity is for a Concrete Material Supplier to provide ready-mix concrete and specialized repair mortars for bridge maintenance projects within Dauphin County, Pennsylvania. The selected supplier will be responsible for delivering high-strength or rapid-setting concrete mixes that adhere to strict durability requirements and PENNDOT specifications, utilizing ready-mix trucks for delivery to various project sites. The solicitation was posted on October 15, 2026, with a response deadline of November 4, 2026. Falling under NAICS code 327320, this contract focuses on supporting prime contractors in the maintenance of critical bridge infrastructure throughout the county.

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2023 TISIP Program – Bundle #1

Solicitation # R000208.0558

Dauphin County is soliciting bids for the 2023 TISIP Program – Bundle #1, a construction project focused on infrastructure and highway improvements. The scope of work includes drainage improvements, guide rail upgrades, ADA ramp upgrades, and culvert replacement across Mifflin Township, Lykens Borough, Middle Paxton Township, and Millersburg Borough. The contract will be awarded to the responsible bidder who submits the lowest responsive bid, with evaluation based on price, qualifications, and financial ability. Bids must be submitted online via PennBID by Wednesday, November 4, 2026, at 2:00 PM local time. Key requirements for bidders include a bid security of at least 10% in the form of a certified check or bid bond, a non-collusion affidavit, and a Public Works Employment Verification Form. The project is subject to the Pennsylvania Prevailing Wage Act and requires that at least 70 percent of the craft labor workforce consist of journeypersons or registered apprentices. Contractors must adhere to OSHA excavation standards, PennDOT pavement and signage specifications, and strict environmental and anti-pollution regulations. Additionally, the contractor is responsible for providing an independent testing agency and ensuring landscape restoration occurs within ten days of disturbance.

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Request for Proposals for SafeConnect Technology Development

Solicitation # YWCA Greater Harrisburg, Dauphin County

YWCA Greater Harrisburg is soliciting proposals from qualified technology and software development firms to create SafeConnect (SCAN), a secure, single-access platform designed for coordinated victim services in Dauphin and Perry Counties, Pennsylvania. The platform must be user-centered and optimized for smartphones while remaining fully functional on computers, supporting secure communication, case management, virtual services, and coordinated referrals. Preference will be given to vendors with a proven track record in developing secure platforms for human services, healthcare, or government environments where data confidentiality and accessibility are paramount. The project is anticipated to span 36 months from October 1, 2026, to September 30, 2029, with a pilot launch targeted for July 2027. There is a planning allocation of approximately 600,000 dollars available for development, licensing, hosting, and support, though the final contract value is subject to funding and approvals. Interested parties must submit their proposals electronically via PennBid by November 16, 2026, at 4:00 p.m. Eastern Time, with written questions due by October 30, 2026.

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Snow Removal and Salting for Sidewalks

Solicitation # IFB 2026-12

Invitation for Bids IFB 2026-12 is a solicitation issued by the City of Harrisburg Department of Public Works for snow removal and salting services for approximately 295 to 315 city-owned lots and ADA ramps within city limits. The contract period runs from November 15, 2026, through April 30, 2027, with an option for three additional annual extensions. The scope requires contractors to clear snow and ice within 24 hours of accumulation exceeding one inch and to provide pre-treatment with deicer or calcium chloride for forecasted events, provided temperatures remain below 33 degrees. Specific emphasis is placed on ADA compliance, requiring ramps to be cleared and treated all the way to the street to ensure continuous access. To be considered responsive, bidders must attend a mandatory pre-bid meeting, perform a full scope survey, and submit a bidder narrative and equipment list via PennBid. The City requires the successful bidder to have at least three prior service contracts and maintain a City of Harrisburg Business/Mercantile License. Financial security requirements include a 10 percent bid bond, a 100 percent performance bond, and a 100 percent payment bond if subcontractors are used. Payments are issued Net 30-45 days via a bi-weekly check run. Award decisions are based on responsiveness and responsibility, with the City reserving the right to reject bids based on safety standards or the quality of previous work.

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HVAC & Plumbing InstallationThis subcontract opportunity involves the installation of HVAC and plumbing systems for prime contractors working on Dauphin County and Swatara Township Authority projects. The scope of work specifically includes the installation of mechanical systems within the pump room and electrical/generator room, ensuring all completed systems adhere strictly to the provided project specifications. The project is located in Dauphin County, Pennsylvania, and falls under NAICS code 238220. Interested parties must submit their responses by the deadline of November 12, 2026, at 3:00 PM.

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Specialized Services (Bypass Pumping)This subcontract opportunity is for specialized bypass pumping services to support prime contractors on projects managed by the Dauphin County and Swatara Township Authority in Pennsylvania. The selected provider will be responsible for the setup and operation of industrial pumping systems designed to divert wastewater around active construction zones, ensuring that sewer flow is maintained without interruption throughout the duration of the construction period. The solicitation is categorized under NAICS code 562910 and is specifically for performance within Dauphin County. Interested parties must submit their responses by the deadline of November 12, 2026, following the posting date of October 13, 2026.

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SCADA & Control Systems IntegrationThis subcontract for SCADA and Control Systems Integration involves the design and installation of PLC and SCADA control systems for prime contractors working on Dauphin County and Swatara Township Authority projects. The scope of work includes the manufacture of Control Panel CP PS9, the installation of PLC panels, and the full integration of SCADA hardware and software. The contractor is responsible for performing I/O field wiring testing to ensure the delivery of a fully functional control system. To qualify for this project, the contractor must hold UL 508A and NFPA 79 certifications. The project is located in Dauphin County, Pennsylvania, and falls under NAICS code 541330. Interested parties must submit their responses by the deadline of November 12, 2026.

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Electrical Systems & Power DistributionThis subcontract for Electrical Systems and Power Distribution involves the installation of low-voltage power conductors and electrical infrastructure for prime contractors on projects managed by the Dauphin County and Swatara Township Authority. The scope of work includes the installation of single conductor building wire, power and control tray cables, VFD cables, and conduits. Additionally, the contractor is responsible for all grounding, bonding, and labeling in accordance with Section 16075 to deliver a fully wired electrical system. All work must be performed in strict compliance with NFPA 70 National Electrical Code standards. The project is located in Dauphin County, Pennsylvania, under NAICS code 238210. Interested parties must submit their responses by the deadline of November 12, 2026.

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Concrete Work (Specialty/Encasement)This subcontract for Concrete Work (Specialty/Encasement) involves performing cast-in-place concrete services for prime contractors on projects managed by the Dauphin County and Swatara Township Authority. The scope of work specifically focuses on providing concrete encasement for conduits, ensuring a minimum 3-inch cover on all sides, and completing miscellaneous concrete contingency tasks in accordance with Spec Section 03 30 00. Deliverables include the completion of concrete-encased conduit runs and various miscellaneous concrete structures within Dauphin County. The opportunity is categorized under NAICS code 238110 and was posted on October 13, 2026. Interested parties must submit their responses by the deadline of November 12, 2026, at 3:00 PM. This project is situated in Pennsylvania and is administered through the Dauphin County agency.

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Paving & Site RestorationThis subcontract for Paving and Site Restoration involves performing bituminous paving and trench restoration for prime contractors on projects within Dauphin County and the Swatara Township Authority. The scope of work includes the installation of temporary bituminous paving and the completion of final trench paving restoration on state roads, with a strict requirement to adhere to PADOT Publication 35 standards for all right-of-way activities. The project is categorized under NAICS code 237310 and is managed by Dauphin County in Pennsylvania. Interested parties must submit their responses by the deadline of November 12, 2026, to provide the necessary restored road surfaces and paved trenches as specified in the contract requirements.

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Manhole & Structure InstallationThis subcontract for Manhole and Structure Installation involves providing specialized installation services for prime contractors on infrastructure projects managed by the Dauphin County and Swatara Township Authority. The scope of work includes the delivery, installation, and sealing of various precast concrete structures, specifically 4 foot diameter storm manholes, Type M 2x4 foot storm inlets, sanitary sewer manholes, and Air Release Valve vaults. Additionally, the contractor is responsible for the lining of existing manholes. The project is located within Dauphin County, Pennsylvania, and falls under NAICS code 238910. Interested parties must submit their responses by the deadline of November 12, 2026, at 3:00 PM.

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Utility Pipe Installation (Sanitary & Storm)This subcontract for utility pipe installation involves the installation of sanitary and storm sewer piping for infrastructure projects within Dauphin County and the Swatara Township Authority. The scope of work includes the excavation and installation of 18 inch SDR-26 PVC, 15 inch SDR-35 PVC, and 18 inch RCP storm sewers, as well as the cutting, capping, and abandonment of approximately 6,526 linear feet of existing sanitary sewers to deliver a fully tested drainage network. The project is categorized under NAICS code 237110 and is being managed through Dauphin County in Pennsylvania. Interested parties must submit their responses by the deadline of November 12, 2026, for work to be performed within Dauphin County.

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PENNDOT SR 0083-078 EISENHOWER INTERCHANGE PUMP STATION NO. 9 & SANITARY SEWER RE-ROUTING

Solicitation # PENNDOT SR 0083-078

The PENNDOT SR 0083-078 Eisenhower Interchange Pump Station No. 9 and Sanitary Sewer Re-routing project is a comprehensive infrastructure initiative for the Swatara Township Authority. The scope involves the construction of a new suction lift triplex wastewater pump station, including a pump room with three pumps, an electrical/generator room, a control platform, and a wet well. Additional work includes the installation of force mains, gravity sanitary sewers, associated manholes, and full site restoration. The project is divided into four distinct contracts: General Construction, Electrical Work, HVAC Work, and Plumbing Work. Funding is provided by PENNVEST, making the contract subject to 40 CFR Part 30 regulations and specific affirmative steps for the utilization of Disadvantaged Business Enterprise firms. Bids are submitted via the PennBid program by November 12, 2026, and will be awarded to the lowest responsible and responsive bidder. Qualified bidders must demonstrate at least five years of experience across five similar projects and ensure that at least 50 percent of the work is performed by their own workforce rather than subcontractors. Requirements include a bid security of 10 percent of the bid total, compliance with the Public Works Employment Verification Act, and adherence to Pennsylvania Prevailing Minimum Wage determinations. The contract is governed by EJCDC C-700 Standard General Conditions, modified by supplementary conditions, and requires strict adherence to UL and NFPA standards for electrical and control systems. All products installed within the Penn DOT right-of-way must be certified according to PADOT Publication 35.

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Joint SealantsThis subcontract opportunity involves the application of interior joint sealants for prime contractors working on City of Harrisburg fire station projects within Dauphin County, Pennsylvania. The scope of work includes the installation of silicone, urethane, and latex sealants, as well as the application of acoustical sealants to perimeter joints to ensure traffic durability, mildew resistance, and proper acoustic performance. The primary objective is to deliver high-quality sealed joints and effective moisture barriers. The project is categorized under NAICS code 238390 and was posted on October 8, 2026. Interested parties must submit their responses by the deadline of October 29, 2026. Further details and submission guidelines can be accessed through the PennBid portal.

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