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ERI Consulting, Inc. <br /> <br /> 3.1.1.10.2 Plastic shall be sized to minimize seams. If the <br /> floor area necessitates seams, those on successive <br /> layers of sheeting shall be staggered to reduce the <br /> potential for water to penetrate to the flooring <br /> material. A distance of at least 6 feet between seams <br /> is sufficient. Do not locate any seams at wall/floor <br /> joints. <br /> <br /> 3.1.1.10.3 Floor sheeting shall extend at least 18" up the <br /> sidewalls of the work area. <br /> <br /> 3.1.1.10.4 Sheeting shall be installed in a fashion so as to <br /> prevent slippage between successive layers of <br /> material. (Vinyl sheeting raay be used for improved <br /> traction on floors). <br /> <br /> 3.1.1.11 Cover walls in the work area with polyethylene sheeting. <br /> Walls that are nonporous and will not be damaged by water, <br /> surfactant, encapsulant do not necessarily need protection. <br /> They can be decontaminated using~tEPA vacuums and wet cleaning <br /> techniques. Walls with mortar joints (e.g. tile) are <br /> considered porous. In addition, openings through these walls <br /> to uncontaminated areas of the building must be sealed as <br /> described in Section 3.1.1.9. <br /> <br /> 3.1.1.11.1 Walls shall be cOvered with two layers of 4 mil <br /> polyethylene sheeting. <br /> <br /> 3.1.1.11.2 Plastic shall be sized to m4~imize seams. Seams shall <br /> be staggered and separated by a distance of at least <br /> 6 feet. Wall sheeting shall overlap floor sheeting by <br /> at least 12 inches beyond the wall/floor joint to <br /> provide a better seal ag~t water damage and for <br /> negative pressure. Wall sheeting must overlap floor <br /> sheeting such that the first wall sheeting layer is <br /> between the first and second floor sheeting layer. <br /> <br /> 3.1.1.11.3 Wall sheeting shall be secured adequately to prevent <br /> it from falling away fro~ the walls. This will <br /> require additional support/attachment when negative <br /> pressure ventilation systems are utilized. <br /> <br /> 3.1.2 Worker decontamination enclosure systems: <br /> <br /> 3.1.2.1 Worker decontamination enclosure systems shall be provided at <br /> all locations where workers will enter or exit the work area. <br /> One system at a single location for each contained work area <br /> is preferred. These systems may consist of existing rooms <br /> outside of the work area, if the layout is appropriate, that <br /> <br />4/11/03 59 <br /> <br /> <br />