copies of all required notifications and of all the following documents at the job site:
completion dates.
681.1.5 -Pre-Abat ement Meeting: The Contractor and/or the Asbestos Abatement Contractor shall meet with the Engineer prior to beginning work to discuss in detail the asbestos plan, including work procedures and safety precautions. The plan must be approved, in detail, by the Engineer, prior to the start of any abatement. The Contractor shall also submit to the Engineer the following information:
regulated areas, decontamination system and layout, sequencing of asbestos related work, disposal plan, air monitoring plan, description of personal protective equipment to be used, and detailed description of all abatement methods to be used. A WV Licensed Asbestos Project Designer must sign this plan.
will be involved with this project.
681.1.6 -Personnel Protection: The Asbestos Abatement Contractor shall provide for all workers, supervisors, inspectors an d monitoring technicians, disposable paper -type protective overalls plus head and shoe covers as required by OSHA regulations. Respiratory equipment selection shall be based on OSHA requirement in 1926.1101. All persons entering a regulated area shall w ear an approved respirator and protective clothing. Eye protection and hard hats shall be available as required. The Asbestos Abatement Contractor shall provide a minimum of one set of personal protective equipment for use by a Division authorized visi tor(s).
681.1.7 -Security: The Asbestos Abatement Contractor shall provide and post all required warning signs in accordance with OSHA regulations. The Contractor is responsible for securing the regulated area from unauthorized personnel.
681.1.8 -Air Monitoring and Testing: All exposure air monitoring shall be conducted in accordance with 1926.1101 of OSHA Regulations. The analysis of all air samples shall be conducted by a certified and licensed independent testing laboratory that is not owned or financially related to the Asbestos Abatement Contractor. Air sample results shall be posted within 24 hours of the assessment. For all Class I projects, the Asbestos Abatement Contractor shall be responsible for hiring a Testing Laboratory to conduct perimeter samples outside the regulated area. The Contractor shall send to the Engineer the results of all air monitoring tests conducted by the Asbestos Abatement Contractors testing laboratory. No Class I abatement shall be performed without the air -monitoring technician being notified.
749 681.1.9 -Asbestos Contamination Limits: If activities create a visible escape of dust from the work area, the Asbestos Abatement Contractor shall immediately cease abatement work and further seal the work are a and apply additional wetting agent. If air test results from inside the work area or in the breathing zone of one of the employees exceeds the OSHA (TWA) Permissible limit, all workers inside the work area will be required to wear powered air purifying respirators until subsequent air tests show the asbestos levels have dropped below the permissible limit. At this time negative pressure half mask respirators may again be used. If testing outside the work area indicates that the levels of asbestos exc eed 0.01 fibers per cubic centimeter or above the background levels, then abatement work shall cease. The enclosure will be further sealed and additional wetting agents applied. Work shall resume only upon approval of the Engineer.
681.1.10 -Contractor ’s Certification: The Contractor shall provide written certification to the Engineer that the abatement as shown in the contract plans has been completed according to OSHA, EPA and West Virginia 64 CSR 63.
681.2 -EXECUTION : 681.2.1 -General: Work Procedures: Perform asbestos related work in accordance with 29 CFR 1910.1001 and as specified within this provision. Use wet removal procedures. Personnel shall wear and utilize protective clothing and equipment as specified herein. Eating, smoking or drinking shall not be permitted in the asbestos work area. Personnel other than those engaged in the removal and demolition of asbestos shall not be exposed at any time to airborne concentrations of asbestos unlessal l the personnel protection provisions of this specification are complied with.
681.2.2 -Preparation of Work Area: Establish a regulated area as required by 1926.1101. All Class I and Class II asbestos work shall be conducted in a properly demarcated re gulated area. Critical barriers shall be placed over all openings into the regulated area for all Class I and Class II projects. These critical barriers shall consist of one or more layers of plastic sheeting, portable partitions, temporary wood partiti ons or other enclosures and shall be used to prevent the escape of asbestos fibers. Shut down and isolate heating, cooling and ventilation air systems in affected areas of the structure to prevent contamination and fiber dispersal to other areas. All ai r supply and return vents within the work areas shall be sealed with duct tape and two layers of plastic sheeting. In no case shall the structure ventilation system be used as a part of the local exhaust system for the asbestos work area, nor shall any fa ns or room ventilators be in operation during abatement work. Remove all heating, ventilation and air conditioning system filters located in the work areas, spray with amended water and pack impermeable clear plastic bags (6 -mil thickness minimum) with p roper labeling for disposal in the approved waste site. Pre-clean the regulated area prior to installing plastic sheeting over walls, floors and other stationary items is required if visible contamination exists. This cleaning shall be performed using HEPA filtered vacuum equipment or wet cleaning methods as appropriate. Methods that raise dust, such as dry sweeping or vacuuming with equipment not equipped with HEPA filters is prohibited. For Class I work, cover floor and wall surfaces with plastic sheeting sealed with duct tape. Cover floors with two (2) layers of 6 -mil plastic sheeting, extending the plastic twelve ( 12)
750 inches up the walls. Then cover the walls with one layer of 6 mil plastic sheeting to the floor level, overlappin g the floor covering a minimum of twelve ( 12) inches and seal with duct tape. When tape is insufficient to support plastic sheeting or where existing finishes may be damaged by the application of plastic sheeting, the Asbestos Abatement Contractor shall construct temporary wood frame supports for the plastic sheeting. All remaining equipment and other items that will not be removed are to be covered with 6 -mil plastic sheeting and sealed with duct tape. Emergency and fire exits from the work areas are t o be maintained.
681.2.3 -Local Exhaust System (Negative Pressure): On Class I work the Asbestos Abatement Contractor must provide a local exhaust system in compliance with 29 CFR
1926.1101. Each exhaust unit must be equipped with pre -filters and a HE PA filter through
which air from the work area is drawn and exhausted. The exhaust unit(s) shall be located opposite to and at the farthest side from the make -up air entrance to the work area, so the make - up air enters the work area through the decontamin ation facility and travels across the work area. The structure ventilation system shall not be used as any part of the local exhaust system for the asbestos control area, nor shall any fans or room ventilators be in operation during the abatement work. A ll supply and return air openings are to be closed and sealed. Position the exhaust unit inside the work area and exhaust through the windows, door or other openings to the exterior of the structure through the use of flexible duct connections sealing ar ound the ducts with plastic and tape. Exhaust into the construction area will be permitted only upon approval of the Engineer. Local exhaust equipment shall be supplied in a sufficient quantity to produce a minimum of four (4) air changes per hour in ea ch removal area. A spare unit shall be kept on site at all times to ensure continuous negative air operations. The exhaust units shall be started prior to beginning removal operations and shall run continuously to maintain a constant negative pressure. Filters are to be replaced as required to maintain the efficiency of the system. The Contractor shall provide a viewing window of 9 square feet showing the enclosed work area.
681.2.4 -Decontamination Enclosure Systems: The Contractor shall provide pe rsonal hygiene facilities in compliance with 1926.1101. All Class I projects involving quantities of ACM greater than 100 square feet require a decontamination system that includes a clean room, shower room and equipment room. (See Figure 1 -Typical De contamination Enclosure System) Access between any two (2) rooms within the decontaminated enclosure systems shall be through a curtained doorway. Both the work decontamination system and the equipment decontamination enclosure system shall contain ligh ted emergency exit signs on the doors of the enclosures. A worker decontamination enclosure system is to be constructed contiguous to the work area and consist of three (3) totally enclosed chambers. These chambers shall be:
clean respiratory protection equipment. No asbestos contaminated items shall enter this room.
This is a contaminated area.
is a contaminated area.
751 The equipment room shall have a curtained doorway to the work area. The shower room shall contain at least one (1) shower for every 10 workers and be equipped with hot and cold water with temperature controls. Careful attention shall be paid to the shower enclosure to insure against leakage of any kind. A supply of soap and shampoo is to be on hand at all times in the shower ro om. Wastewater from the shower room shall pass through a 5 -micron HEPA hydraulic filter before being allowed to enter the structures sanitary sewer system. The equipment decontamination enclosure system for Class I projects shall consist of two
wastewater from this washroom must be filtered or contained and disposed of as contaminated material as noted previously.
For Class II projects as well as Class I projects less 100 square feet, the contractor shall establish an equipment room consisting of a drop cloth adjacent to the regulated area. The area must be of sufficien t size to accommodate cleaning of equipment and removing personal protective equipment without spreading contamination beyond this area. Personal protective clothing shall be cleaned with a HEPA vacuum before it is removed. All barriers and plastic lini ngs are to be effectively sealed and taped. Immediate repair of any damage or defects is to be completed upon discovery. A visual inspection of the enclosures is to be done at the beginning of each work shift.
681.2.5 -Entry And Decontamination: All wo rkers and visitors leaving the work area must follow the decontamination sequence. Contaminated respirators are to be worn into the shower and are not to be removed until they have been washed to remove any dust. Cartridges are to be removed and properly discarded. Respirators that have been thoroughly washed are to be stored in the clean room ready for reuse.
Work Entry Sequence: All persons are to be logged in as they enter. Non -employees must sign the attached wavier before entering. The sequence for entry shall be as follows: For Class I projects, the worker enters the clean room and changes from street clothes into clean protective disposal clothing, including footwear, and don the appropriate respirator. A positive/negative pressure fit check is performed to insure proper fitting. When all required protective equipment has been donned, the worker proceeds into the work area. For Class II projects, employees shall don personal protective equipment prior to entering the regulated are a. Work Exit Sequence: For Class I projects, the worker shall remove all gross contamination and debris from coveralls and footwear by wet wiping or HEPA vacuuming prior to entering the equipment room. The worker then proceeds to the equipment room. Al l clothing except for respiratory equipment is to be removed. Extra work clothing may be stored as contaminated materials in the equipment room. Disposable coveralls shall be placed in plastic bags for disposal with other contaminated material. The worker shall then proceed to the shower room and wash; removing the respirator last so as to prevent inhalation of fibers during decontamination. After showering, the worker enters the clean room and dresses in new coveralls (if returning to the work area) o r street clothing (if leaving).
752 For Class II projects, the worker shall step onto the drop cloth and HEPA vacuum the protective clothing prior to its removal. The respirator shall be thoroughly cleaned after doffing. Filters in the respirators shall be removed when wet and shall be treated as contaminated waste. A new filter shall be placed in the respirator prior to reuse. There shall be no smoking, eating or drinking in the regulated area or the decontamination area.
681.2.6 -Asbestos Removal: Asbestos removal techniques used by the Asbestos Abatement Contractor shall comply with OSHA, EPA and West Virginia regulations. Unless prior written approval is received from EPA and the Engineer, amended water shall be used to adequa tely wet all ACM removed or disturbed by the Asbestos Abatement Contractor.
681.2.6.1 -Class I Projects: The following procedures shall be used on all Class I project:
projects only).
681.2.6.2 -Class II Projects: The following procedures shall be used on all Class II projects:
and protective clothing.
a negative exposure assessment has been produced or the project is conducted outside.
accordance with 1926.1101
accordance with 1926.1101
transite panels shall not be dropped to the ground. These materials shall be immediately lowered to the ground via covered dust -tight chute, crane or hoist, or placed in an impervious waste bag or wrapped in plastic sheeting and lowered to the ground no later than the end of the work shift.
681.2.7 -Site Insp ection: While performing work, the Asbestos Abatement Contractor may be subject to on -site inspections by a representative of the WVDOH, USEPA, WVDEP and/or WVDHHR , during the abatement process . If the work is found to be in violation of this specification, the Engineer will be requested to issue a stop work order to be in effect immediately and until the violation is resolved. Standby time required resolving the violation shall be at the Contractors expense. If at any time, the Engineer determines th at work practices of the Contractor are violating pertinent regulations, endangering workers or not complying with these specifications; The
753 Engineer will immediately notify in writing the Asbestos Abatement Contractor's on -site representative that operati ons are to cease until corrective actions are taken.
681.2.8 -Cleanup: Throughout the abatement project, maintain surfaces in the work area free of accumulations of asbestos fibers, dust and debris. All visible accumulations of asbestos material and de bris are to be removed by wet cleaning or HEPA vacuuming. Give special attention to restricting the spread of dust and debris. Prevent waste from being distributed over the general area. Wet-clean all surfaces in the work area. Remove only the plast ic sheets from floors and walls before work area is certified as asbestos free. Windows, doors and HVAC vents shall remain sealed and any HEPA filtered negative air pressure systems, air filtration and decontamination enclosure systems shall remain in ser vice. Clean all surfaces in the work area and any other contaminated areas with water and/or with HEPA filtered vacuum equipment. After cleaning the work area, wait 24 hours to allow for settlement of dust, and again wet clean or clean with a HEPA filte red vacuum all surfaces in the work area. After completion of the second cleaning operation, a complete visual inspection of the work area to ensure that the work area is free of visible debris is to be performed. Sealed drums and all equipment used in the work area shall be included in the cleanup and shall be removed from work areas through the equipment decontamination enclosure system at the appropriate time in the cleaning sequence. When the final inspection determines that the area is free of accumulations of visible debris and a final air test shows that the concentration of asbestos fibers is less than 0.01 fibers per cc (or the predetermined baseline), the decontamination enclosures system shall be removed, and the area thoroughly cleaned with HEPA filtered vacuum equipment then windows, doors and vents can be unsealed and material from these areas and the equipment and shower rooms disposed of as contaminated waste. The Engineer is to be notified before the regulated area has been deemed an unrestricted entry area.
681.2.9 -Disposal: Collect asbestos waste, scrap, debris, bags, containers, equipment and asbestos contaminated clothing which may produce air borne concentrations of asbestos fibers and place them in sealed, clear impermeable bags. Each bag shall be labeled according to OSHA, EPA and DOT requirements. Dispose of waste asbestos material in accordance with Environmental Protection Agency (EPA) and West Virginia reg ulations at an approved landfill. For temporary storage, the sealed impermeable clear bags may be stored in asbestos waste drums or skids.
681.3 -METHOD OF MEASUREMENT : The quantity of work done wi ll be on a lump sum basis.
681.4 -BASIS OF PAYMENT : The quantities, determined as provided, will be paid for at the contract unit price for the items listed below. The prices and payment shall be full compensation for furnishing of material and performing all the work prescribed in a workmanlike and acceptable manner, including all tools, equipment, supplies and incidentals necessary to complete the work. All incidental work and materials for which no b asis of payment is provided will be considered as completely covered by the prices bid for the items included in the Contract.
754 681.5-PAY ITEMS: ITEM DESCRIPTION UNIT 681001 -* Asbestos Abatement, Class I Lump Sum 681002 -* Asbestos Abatement , Class II Lump Sum
* Sequence number
755 SECTION 685 BRIDGE CLEANING
685.1DESCRIPTION :
The cleaning work shall consist of three phases of cleaning. Phase -One will be a dry, pre - wash cleaning, followed by two -phase water cleaning. All dry, pre -wash cleaning shall be performed prior to any water cleaning, and all water cleaning shall be performed prior t o surface preparation and painting operations. With approval of the Engineer, the Contractor may break this work up into sections or bays.
685.1.1 -Phase One: This phase shall consist of cleaning by dry methods all loose dirt and debris from all areas as noted in the plans. This phase shall be completed prior to any washing operations. Collection may include the use of brooms, brushes, shovels, wheelbarrows, buckets, vacuums, or other suitable means.
685.1.2 -Phase Two: This phase shall consist of washing completely with low pressure plain water the entire bridge deck, curbs, parapets, sidewalks and expansion joints, and any other areas as noted in the plans. All drains shall be thoroughly flushed and shall be free flowing. All debris and trash sh all be removed from the drains. At the nozzle end, the washing equipment shall have a minimum pressure of 3000 PSI and a maximum pressure of 4500 PSI.
685.1.3 -Phase Three: This phase shall consist of washing with a mixture of low pressure water and a solution of a commercial brand soluble salt remover, any areas as noted in the plans. This washing shall be accomplished with a low pressure washer at a minimum pressure of 3000 PSI and a maximum pressure of 4500 PSI, at the nozzle end with the nozzle 4” to 8” from the surface. Remove all surface abnormalities such as rust scale, peeling paint, or blistered paint that would prevent the soluble salt remover from coming into c ontact with the salt contamination. Typically, low pressure water washing is not capable of removing intact coating material. The nozzle type shall be a rotary nozzle. The contractor shall follow the Manufacturer’s recommendations or specifications for m ethod and rate of application of the soluble salt remover. Water shall be from an approved source of drinking water, and the soluble salt remover shall be chosen from West Virginia Division of Highways Approved Source List. The contractor is to place sp ecial emphasis on the top surface of all flanges, connection plates, bearings, and excessively rusty or pitted areas. Any areas of the structure that exhibit mineral deposits of black iron oxide called “black rust” after any abrasive blasting shall be considered contaminated with chlorides and will need an additional washing with the soluble salt remover solution and another abrasive blasting.
685.2 -TESTING OF STRUCTURAL STEEL : The maximum level of chloride contamination shall be 5 micrograms/cm2. Testing method shall be in accordance with The Society for Protective Coatings (SSPC) Technology Guide 15, Section 5.2.5, Latex Sleeve Methodology. In the first 150 sq. ft. of cleaning the contractor is to determine by sufficient testing of the most deteriorated areas (after rust has been removed), the rate of application, nozzle pressure, nozzle distance from surface, and dilution ratio of mixture to achieve the desired level of cleanliness. Thereaf ter, the contractor is to perform test in areas designated by the Engineer to insure that the entire structure has attained the specified level of cleanliness. The Engineer is to verify the degree of cleanliness. The Engineer’s decision shall be final.