Common use of Building Decontamination Clause in Contracts

Building Decontamination. The interior of the main building shall be cleaned to remove pesticide contamination. The cleanup shall consist of, but not be limited to: * Vacuum interior ceilings, trusses, walls, and floors with a high-efficiency particulate air (HEPA) filter vacuum.* * To assure thorough cleaning of all surfaces, high-pressure washing may be required. All decontamination and rinse water will be captured and recycled through a filter media, either sand or charcoal, then discharged to the sanitary sewer, provided that the sample results are at an acceptable level to discharge into the sewer. * The contaminated filter media and dust generated by the HEPA process will be drummed up and disposed of in a hazardous waste landfill. * To measure the effectiveness of the cleanup inside the main building, air samples will be collected and analyzed for selected pesticides (see below). In general, an acceptable building interior air concentration for an individual pesticide compound will be no greater than one order of magnitude less than the Occupational Safety and Health Administration (OSHA) Permissable Exposure Level (PEL) or the American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value- Time-Weighted Average (TLV-TWA) divided by, based on generally similar target organs, the total number of similar type pesticide compounds (i.e., Toc^jest for organochlorine, T0Ppest for organophosphorous) detected in the confirmatory samples. Compound PEL/TLV-TWA Cleanup ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ mg/m3 VToPpest Methoxycnlor 10 mg/m3 VToctpesr Lindane . 5 mg/m3 •05/^OClpest m<?/m3 Toxaphene . 5 mg/m3 •05/Toctpest Heptachlor . 5 mg/m3 •05/TOClpest Aldrin .25 mg/m3 •025/TOClpest m<?/m3 Endosulfan . 1 mg/m3 .01/Toclpest mg/m3 Dieldrin . 2 5 mg/m3 . °25/T0clpest mg/m3 Endrin . 1 mg/m3 •Ol/Tocipest Chlordane . 5 mg/m3 •05/TOClpest m<?/m3 DDT 1 mg/m3 •VTocipw, »g/®3 Strychnine . 15 mg/m3 •°15/T0Ppest mg/m3 Diazinon . 1 mg/m3 •01/TOPpest Dichlorvos .9 mg/m3 •09/TOPpest m9/m3 Captan 5 mg/m3 •5/T0Clpest mg/m3 Phorate . 0 5 mg/m3 •005/TOPpest For the ten remaining compounds for which OSHA PELs or ACGIH TLV- TWAs have not been established, the following PEL/TLV-TWA analogues and cleanup levels shall be used: Compound Similar PEL/TLV-TWA Compound Analogue Cleanup Level A-BHC Lindane 5 mg/m3 • 05/Tocipest 3 B-BHC Lindane 5 mg/m3 • 05/Toclpest mg/m D-BHC Heptachlor Epoxide Endosulfan II Endosulfan Lindane 5 mg/m3 * 05/Toclpest mg/m3 Heptachlor .5 mg/m3 •°5/T0Clpest mg/m3 Endosulfan . 1 mg/m3 •01/Toclpest mg/m3 Sulfate Endosulfan . 1 mg/m3 •01/Toclpest ^g/m3 Endrin Ketone Endrin . 1 mg/m3 •01/Toclpest rog/m3 DDE DDT 1 mg/m3 •VTodpest mg/m3 DDD DDT 1 mg/m3 • 1/T0Clpest 3 Coumaphos Malathion 10 mg/m3 i/ToPpes*- m9/m3 In the event that analytical results exceed the cleanup levels or the mixture of pesticides presents a risk to human health, additional response actions will be necessary. This may include additional cleaning and/or demolition of the main building.

Building Decontamination. The interior of the main building shall be cleaned to remove pesticide contamination. The cleanup shall consist of, but not be limited to: * Vacuum interior ceilings, trusses, walls, and floors with a high-efficiency efficienCy particulate air (HEPA) filter vacuum.* * To assure thorough cleaning of all surfaces, high-pressure washing may be required. All decontamination and rinse water will be captured and recycled through a filter media, either sand or charcoal, then discharged to the sanitary sewer, provided that the sample results are at an acceptable level to discharge into the sewer. * The contaminated filter media and dust generated by the HEPA process process- will be drummed up and disposed of in a hazardous waste landfill. * To measure the effectiveness of the cleanup inside the main building, air samples will be collected and analyzed for selected pesticides (see below). In general, an acceptable building interior air concentration for an individual pesticide compound will be no greater than one order of magnitude less than the Occupational Safety and Health Administration (OSHA) Permissable Exposure Level (PEL) or the American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value- Time-Weighted Average (TLV-TWA) divided by, based on generally similar target organs, the total number of similar type pesticide compounds (i.e., Toc^jest Tocipest for organochlorineorganochlonne, T0Ppest for organophosphorous) detected in the confirmatory samples. Compound PEL/TLV-TWA Cleanup ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ Level Malathion 10 mg/m3 VToPpest mg/m3 Methoxycnlor 10 mg/m3 VToctpesr VTocidm* m<?/in3 Lindane . 5 mg/m3 •05/^OClpest m<?/m3 .05/Toclpest mg/m3 Toxaphene . 5 .5 mg/m3 •05/Toctpest Toclpest mg/m3 Heptachlor . 5 mg/m3 •05/TOClpest Aldrin .25 Toclpest mg/m3 •025Aldrin . 25 mg/TOClpest m<?/m3 m3 .025/Toclpest mg/m3 Endosulfan . 1 mg/m3 .01. 01/Toclpest mg/m3 Dieldrin . 2 5 .25 mg/m3 . °25.025/T0clpest Toclpest mg/m3 Endrin . 1 mg/m3 •Ol•OVToapes, mg/Tocipest m3 Chlordane . 5 mg/m3 •05/TOClpest m<?/m3 Toclpest mg/m3 DDT 1 mg/m3 •VTocipw, »g/®3 •VTocipest mg/m3 Strychnine . 15 mg/m3 •°15•015/T0Ppest TOPpest mg/m3 Diazinon . 1 mg/m3 •01•Oi/TOPpest Dichlorvos .9 T mg/m3 •09Dichlorvos . 9 mg/TOPpest m9m3 • 09/TOP£st mg/m3 Captan 5 mg/m3 •5• 5/T0Clpest Tocipest mg/m3 ■ Phorate . 0 5 mg/m3 •005/TOPpest ToPpest mg/m3 For the ten remaining compounds for which OSHA PELs or ACGIH TLV- TWAs have not been established, the following PEL/TLV-TWA analogues and cleanup levels shall be used: Compound Similar PEL/TLV-TWA Cleanup Compound Analogue Cleanup Level A-BHC Lindane . 5 mg/m3 • 05/Tocipest 3 mg/m3 B-BHC Lindane . 5 mg/m3 • 05/Toclpest Tocipest mg/m m3 D-BHC Heptachlor Epoxide Endosulfan II Endosulfan Lindane . 5 mg/m3 * 05/Toclpest Tocipest mg/m3 Heptachlor .5 mg/m3 •°5/T0Clpest mg/m3 Endosulfan m; . 1 mg/m3 •01. -01/T oclpest mg/m- .1 mg/m3 • 01/Tocipest mg/mj . 1 mg/m3 . 01/Tocipest mg/m; 1 mg/m3 • l/Toc£t mg/m' Heptachlor Lindane . 5 mg/m3 05/Toclpest mg/m3 Epoxide Heptachlor Endosulfan II Endosulfan Endosulfan Sulfate Endosulfan . 1 mg/m3 •01/Toclpest ^g/m3 Endrin Ketone Endrin . 1 mg/m3 •01/Toclpest rog/m3 DDE DDT 1 mg/m3 •VTodpest mg/m3 DDD DDT 1 mg/m3 • 1/T0Clpest 3 Coumaphos Malathion 10 mg/m3 i/ToPpes*- m9ToPpe.* mg/m3 In the event that analytical results exceed the cleanup levels or the mixture of pesticides presents a risk to human health, additional response actions will be necessary. This may include additional cleaning and/or demolition of the main building.