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    • Home
    • Janitorial Services
    • Controlled Environments
    • Data Center Services
    • Decontamination Services
    • Decommissioning Services
    • Construction Cleaning
    • Industries We Service
    • About CFS Site Services
  • Home
  • Janitorial Services
  • Controlled Environments
  • Data Center Services
  • Decontamination Services
  • Decommissioning Services
  • Construction Cleaning
  • Industries We Service
  • About CFS Site Services

Built for Compliance. Delivered with Consistency.

Rough Construction Cleaning (Initial / Pre-Close-In)

CFS Site Services provides specialized Rough Construction Cleaning and Pre-Close-In Cleaning services for cleanrooms, GMP facilities, and controlled environments, supporting contamination control during the earliest stages of new construction and renovation projects. Our trained technicians perform bulk debris removal, construction dust mitigation, and particulate control prior to wall and ceiling close-in, helping prevent contamination from becoming embedded within building materials and critical infrastructure.

Services include vacuuming and wipe-down of exposed surfaces, structural components, utilities, interstitial spaces, and mechanical areas, as well as safe removal of construction waste and packaging. By applying ISO-aligned cleaning methods, GMP best practices, and ISO 9001-certified quality systems, CFS Site Services helps protect HVAC systems, reduce particulate load, and establish a clean foundation for downstream cleanroom certification and validation activities, ensuring projects stay on schedule and audit-ready from day one.

Pre-Final / Pre-Close Clean (Detailed Construction Cleaning)

CFS Site Services delivers detailed Pre-Final and Pre-Close Construction Cleaning services for cleanrooms, GMP manufacturing areas, and controlled environments, performed after the cleanroom envelope is installed and prior to final system startup. This critical cleaning phase focuses on removal of residual construction dust, fine particulates, and surface contaminants from fully enclosed spaces to prepare facilities for HVAC activation, HEPA filter installation, and commissioning activities.

Services include comprehensive wipe-down and vacuuming of walls, ceilings, floors, doors, windows, coves, pass-throughs, light fixtures, and built-in components, as well as cleaning of equipment exteriors and support spaces. By following ISO 14644-aligned cleaning practices, GMP best practices, and ISO 9001-certified quality systems, CFS Site Services helps reduce non-viable particulate counts, protect critical air-handling systems, and establish controlled conditions required for successful cleanroom qualification, validation, and regulatory inspections.

Final / Pre-Commissioning Clean (ISO / GMP Clean)

CFS Site Services provides Final and Pre-Commissioning Cleanroom Cleaning services to support ISO 14644 classification and GMP readiness for regulated facilities, including pharmaceutical, biotechnology, medical device, and sterile manufacturing environments. This critical cleaning phase is performed after HVAC startup and balancing and prior to IQ/OQ, cleanroom certification, and regulatory qualification activities, ensuring the space meets required particulate and microbial cleanliness levels.

Our trained technicians perform GMP-style cleaning using approved disinfectants and aseptic techniques, including top-down, clean-to-dirty cleaning of floors, walls, ceilings, airlocks, anterooms, pass-throughs, HEPA filter faces (where permitted), and equipment exteriors. By following ISO 14644-aligned procedures, EU GMP Annex 1 principles, and ISO 9001-certified quality systems, CFS Site Services helps facilities achieve audit-ready conditions, support successful validation outcomes, and transition cleanrooms into controlled operational status with confidence.

Post-Qualification / Pre-Operational Clean (Return-to-Service)

CFS Site Services provides Post-Qualification and Pre-Operational Cleanroom Cleaning services to support return-to-service readiness following ISO classification, IQ/OQ/PQ, and commissioning activities. This final transition cleaning phase removes residual particulate and microbial contamination introduced during testing, validation, equipment installation, and personnel activity, ensuring cleanrooms are fully prepared for manufacturing, research, or sterile operations.

Our technicians perform GMP maintenance-level cleaning and disinfection of cleanrooms, airlocks, anterooms, gowning areas, and adjacent support spaces, using approved disinfectants, documented procedures, and aseptic techniques. By following ISO 14644-aligned practices, EU GMP Annex 1 principles, and ISO 9001-certified quality systems, CFS Site Services helps facilities maintain audit-ready conditions, support environmental monitoring programs, and confidently transition from qualification to routine operations while protecting product quality, process integrity, and personnel safety.

CFS Site Services

837 Arnold Drive, Suite 100, Martinez, CA 94553

510-292-8593

Copyright © 2026 CFS Site Services — All Rights Reserved.© 2025 CFS Site Services. All Rights Reserved. Unauthorized use or reproduction is prohibited.

ISO 9001 Certified

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