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4 <br /> 10.4 Monitoring the Effectiveness of Decontamination Procedures <br /> Type of Equipment Decontamination Solution Decontamination Procedure <br /> (include sufficient detail so <br /> that those using this HASP <br /> can follow theprocedure) <br /> Backhoe Clean water Vehicle to be washed in the <br /> excavation zone before <br /> relocated. <br /> Visual examination and sampling are used to evaluate the effectiveness of <br /> decontamination procedures, in compliance with 29 CFR 1910.120(k)(2)(iv). Visual <br /> examination is used to ensure that procedures are implemented as described and that <br /> they appear to control the spread of contaminants under changing conditions. Where <br /> feasible, visual examination is also used to inspect for signs of residual contamination <br /> or for contaminant permeation of PPE. Sampling will take place in the event equipment <br /> has been in contact with a hazardous substance. <br /> Both air sampling and surface sampling are used to verify the effectiveness of <br /> decontamination. Air samples are taken in the clean zone to ensure that airborne <br /> contaminants have not spread to clean areas of the facility. Surface samples are taken <br /> from the inside surfaces of PPE, from decontaminated equipment, and from surfaces <br /> within clean areas of the facility to ensure that decontamination and control procedures <br /> are performing as anticipated. The type and frequency of air and surface sampling <br /> used to ensure the effectiveness of decontamination procedures are detailed in the <br /> Exposure Monitoring chapter of this HASP. <br /> Results of the inspections of decontamination procedures and documentation of any <br /> action taken to correct deficiencies are recorded and stored at the City Wastewater <br /> Treatment Plant, the site location. <br /> All employees working in the investigation zone will be notified of the proper reactive <br /> procedures in the event hazardous materials are detected. <br /> Chapter 10 - 3 <br />