This is a service / maintenance or supply contract in Rosedale, Maryland. Contact the soliciting agency for additional information.

Containment (air and watertight) of the work area is required for this project. The containment shall be designed and constructed in such a manner to ensure that the remediation area is completely isolated from the rest of building. 1. Completely isolate and enclose the entrance and emergency exits. 2. Isolate/enclose each area by installing a critical barrier consisting of two layers of six-mil fire retardant polyethylene sheeting (tack sprayed and duct tape) that fully encapsulates the area to be remediated. The entrance to areas to be remediated shall be zippered and shall include a double flap. Construct the enclosure in such a manner to ensure that it will remain intact during the duration of the project. 3. Provide an entry way to the critical barrier and post a mold remediation sign on the entry way. Scrub the air within the containment area during the entire remediation work and for a minimum of 24 hours after remediation is completed. Perform work under negative pressure with air scrubber(s) containing high efficiency particulate air (HEPA) filters. 4. Seal any critical openings such as windows, doorways, and exhaust grills and fixtures, light fixtures, electrical outlets and electrical switch plates, cracks in walls, open drains, or other such openings. Seal with polyethylene sheeting and duct tape. 5. Isolate all openings, including but not limited to the entrance into the work area, through wall and/or ceiling penetrations, window openings, HVAC supply and exhaust diffusers, and lighting that provide for free movement of air from the mold abatement work area to adjacent building areas. Seal the seams to ensure complete containment. 6. The air-scrubbing shall be performed with at least (2) 2,000 cubic feet per minute (CFM) negative air filtration devices (AFDs) to remove mold spores from the air during and after removal of building materials and furniture items. To determine the number of required AFDs, the contractor shall calculate the total cubic footage of all workspaces within the containment and determine the air moving capacity of all the HEPA filtered AFDs to be used in the workspaces. The AFDs must be capable of providing at least four (4) air changes per hour in the work area and a static negative air pressure inside the area of a minimum of 0.01 inches per water column. Each AFD shall be operated continuously (24 hours per day) throughout the project. Each AFD shall be equipped with a magnehelic gauge to monitor the unit's air pressure difference across the filters and to interpret the magnehelic readings to CFM. Ground fault circuit interrupters (GFCI) shall be used for electrical equipment during work. 7. Dehumidification shall be used for the removal of humidity and moisture from the areas being abated. The dehumidifiers shall be equipped with multiple ducting options that allow for ducting both the intake air and the filtered and dehumidified air supply. This makes it possible to easily combine the unit with a HEPA air scrubber, air conditioner or desiccant dehumidifier. Each unit provides a minimum of 270 cubic feet per minute (CFM) of air with the capability of removing a minimum of 128 pints of water. 8. The containment area shall consist of the following: 1. Decontamination Chamber: a. Install a two-stage decontamination chamber and airlock adjacent to the entrance of the containment. The airlock shall consist of two curtained doorways at least three feet apart (where space permits). Each curtained doorway shall be constructed to allow airflow into the work area when HEPA AFDs are operating and to create an effective airtight seal upon loss of negative air. The decontamination chamber shall be utilized as the location where employees enter and exit the containment, the location where bagged waste can be double bagged and sealed for removal from the containment, and the source where make-up air enters the containment. Workers must HEPA vacuum all bagged debris inside the decontamination chamber before passing the bags to the outside. Workers must HEPA vacuum their protective clothes before removing them in the decontamination area when exiting. A shower unit with hot and cold water shall be provided for personal decontamination. b. Prepare the unit by installing a clean room area (separate from the work area by an airlock) to the non-regulated area (separated from the clean room by an airlock). The clean area shall be of sufficient size to allow the non-restricted entry/exit of the entire work crew. The equipment/waste decontamination unit shall consist of a separate clean room (isolated by airlocks). This area is for the removal of water damaged, discolored, and or visibly contaminated material and equipment from the work area c. Dedicate a HEPA vacuum to the decontamination room. Decontaminate all equipment and tools by HEPA vacuuming and damp wiping prior to bringing equipment and tools onto the site (including the negative air machines). Install new HEPA filters and pre-filters in the negative air units and scrubbers. Verify that filters are seated properly in the filter housing. 2. A waste loadout chamber shall be used as a separate but attached structure to the containment area where sealed bags or wrapped and sealed waste should either have their exterior decontaminated or be placed in a second waste bag and sealed. This is the location where waste can be removed from the containment. 3. Establish a negative air pressure differential of -0.01 inches' water column at all times between indoor areas external to the containment barriers and the enclosed remediation area. Establish negative pressure using HEPA-filtered ventilation equipment (AFDs) and negative pressure monitor. Maintain negative pressure throughout the duration of the project. Exhaust HEPA-filtered air outside of building (if not possible, provide an alternative method that ensures that contaminated air will not be exhausted to non-protected building area). Provide make up air and test or monitor containment for leakage using continuous monitoring. Locate negative air machine(s) in such a location as to maintain a laminar flow of air in the containment area. Record the negative pressure on a data log every day before initiating work, after lunch, and at the end of the day. Before the AFD(s) is removed from the containment, the primary and secondary filters shall be changed, the outside of the unit completely decontaminated, and the openings to the filters and the exhaust sealed and taped. 4. On loss of negative pressure or electrical power, all work activities in the containment shall stop immediately and shall not resume until power is restored and the HEPA filtered AFDs are operating again. When power failure or loss of negative pressure occurs and restoration of power or negative pressure cannot be accomplished, the makeup air inlets shall be sealed airtight and the containment evacuated and sealed. 5. The containment area shall be managed to the extent feasible as a dust-free environment. All work associated with this project, from site preparation to closeout, shall be conducted in such a manner as to minimize the disturbance of fungal particles and subsequent dispersion of dust and spores into the air. Dust suppression methods shall include misting (not soaking) of surfaces prior to remediation/removal. Maintain relative humidity levels in the containment between 30% and 60% to help prevent mold growth and facilitate the drying process. 6. Perform final cleaning once removal has been completed using the sandwich technique, to include, but not necessarily limited to the walls, wall cavities, ceiling, floor, polyethylene sheeting and other uncovered surfaces. Manual cleaning shall be conducted in such a manner as to minimize the release of biological contaminants into the air. Decontaminate all equipment and tools by HEPA vacuuming and damp wiping. This includes cleaning tools, negative air machines, waste-containing bags, outer clothing, respirators, gloves, and goggles. 7. Allow all surfaces to dry completely. Any moisture including that associated with disinfectant/biocide use may be left as a residue in porous materials, which can lead to subsequent microbial growth. Use negative air machines to facilitate drying process. Monitor relative humidity throughout project, especially during the drying process. 8. All water damaged, discolored and/or visible contaminated material must be sealed within a six-mil polyethylene bag. No rips or tears shall be visible in the bags, no material may be protruding through the polyethylene, and no residue may be visible outside of a container. All waste materials must be contained and sealed prior to removal from containment. All contaminated materials must be moved from the work area through the waste decontamination unit, wiped, and double bagged. 9. Contaminated materials that cannot be cleaned shall be bagged in six-millimeter-thick polyethylene bags (6-mil poly), as soon as they are removed from the building surface. Secure bags with a twist tie or equivalent. The outside of the bag(s) shall be cleaned with a damp cloth and detergent and HEPA vacuumed in the decontamination chamber of the enclosure. Double wrap bag and remove bag to the outside of the facility and place in the contractor's vehicle. 10. The SHA's industrial hygiene consultant will conduct a final verification of the work upon completion of remediation activities, to include a post remediation inspection, verification that the work was conducted in accordance with this scope of work/corrective action plan, and fungal clearance air sample collection in the abated areas and outside of the building. The post remediation inspection shall verify that all water/mold impacted building components have been removed and that the work area is free of dust and debris. The air samples will be compared with pre-remediation air samples and post-remediation outside air samples to verify that air quality conditions are acceptable. 11. Any areas that do not pass the post Remediation visual inspection and/or clearance air sampling shall be corrected, to include additional cleaning or removal of water/mold impacted building materials. 12. Upon notification of successful abatement/corrective action, the contractor shall return to the facility and demobilize and remove all remediation/corrective action-related materials. 13. This project is anticipated to take fifteen (10) calendar days to complete (from setup to removal of containment and disposal). The remediation contractor shall be able complete the above tasks during regular office hours (7:00 A.M. to 4 P.M) Monday thru Friday, and outside of normal business hours as deemed necessary by the SHA until remediation/ put back is complete. (Note the Restroom Facility is currently closed and will remain closed during the duration of the remediation and there are temporary facilities on site for the public to use). 14. Ensure that project personnel wear personal protective equipment during all stages of the project. Personal protective equipment (PPE) for this project shall consist of disposable clothing, head and shoe coverings, rubber gloves, and respiratory protection (half-mask respirators equipment with N100 filters). Provide acid gas cartridges and/or organic vapor cartridges as needed, based on disinfectants, biocides, cleaners, and encapsulant used. All respirators must be certified by the National Institute for Occupational and Safety and Health (NIOSH). All users shall be trained and fit tested using the specific device worn and cleared for respirator use by a physician or licensed health care professional (PLHCP). Additional glove types may be needed at different stages of the project, depending on the specific chemicals used. If needed protect the hands from abrasion, wear cotton gloves over chemical-resistant gloves. Any reusable PPE (footwear, eye, and hand protection) shall be left in the equipment room until the end of the abatement work. All disposable protective clothing shall be discarded and disposed of every time the user exits the work area. 15. All work shall be conducted in accordance with all Federal and State regulations, USEPA and NADCA guidelines on "Mold Remediation in Schools and Commercial Buildings". Contractor's project manager shall be on site at all times during the project and shall be a certified Microbial Remediation Supervisor. (Note, based on the post abatement air samples, the Contractor may be directed by the Administration to provide additional abatement to lower a particular mold spore below, USEPA and NADCA guidelines on "Mold Remediation in Schools and Commercial Buildings".) The goal is to have particular spores below or equal to outdoor spore counted at the completion of the remediation.