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Health and Safety Plan <br /> 455 E lith St <br /> Tracy,California <br /> Chemicals of Potential Concern (COPCs) <br /> Direct Reading Instrument Action Levels for Area Monitoring and Breathing Zone Monitoring <br /> Monitored Parameter Action Level Response to Action Level <br /> VOCs in the work area will be >_ 10 ppm The SSHO should: <br /> monitored using a PID. continuous • Stop work <br /> reading in the • Don Level C(NEPA/OV cartridges)to identify <br /> breathing zone source of airborne contamination Initiate dust <br /> for 1 minute suppression measures to ensure worker <br /> breathing zone concentrations are well below <br /> action levels, and implement engineering <br /> controls where feasible <br /> • Implement necessary controls (e.g. work <br /> upwind, blower fan)to maintain levels to less <br /> than 10 ppm <br /> >100 ppm The SSHO should: <br /> continuous • Stop work <br /> reading in the . Contact Project Manager if VOC levels cannot <br /> breathing zone be controlled to less than 100 ppm total <br /> for 1 minute <br /> 9.3 Quality Assurance/Quality Control <br /> Adherence to a proper quality assurance and quality control (QA/QC) plan is essential for a <br /> meaningful air sampling effort.The major concerns of a QA/QC plan are calibration of <br /> equipment and document control. <br /> 9.3.1 Calibration and Maintenance Procedures <br /> All direct reading instruments will be calibrated daily before work and checked against <br /> calibration gas at the end of the day. Calibration records will be kept that detail date,time span, <br /> gas or other standard, and the name of the person performing the calibration.The calibration <br /> gas for the PID is isobutylene.The SSHO will ensure that the instrument is kept clean and will <br /> follow manufacturer's directions for keeping the lamp clean.The SSHO will perform no other <br /> maintenance procedures unless approved by the Project Manager. <br /> 9.3.2 Documentation <br /> Strict adherence to document and data control procedures is essential for good QA/QC. Data <br /> and calibration records must be accounted for and retrievable at all times.Types of documents <br /> that are essential include notes, logbooks, maps, data sheets,and reports.These must be placed <br /> Terraphase Engineering Inc. Appendices <br />