3.2.2.1 Tracking of chemicals is an essential component of a comprehensive Environmental Management System. Being aware of chemicals, which are planned, purchased, stored and used, and which become hazardous wastes, is the essence of the system. For effective tracking of the chemicals, the Site Maintenance / Operations Manager maintain an inventory along with important information about the chemicals and a mass balance. For all chemicals being handled, H&S manager maintains Material Safety Data Sheets (MSDS). The chemicals are properly identified and accounted for in all the phases of the operation for which necessary data is made available to the Site QA Manager by the concerned sections handling the chemicals. It is the endeavor of the Site QA Manager to reduce the volume and/or toxicity of chemicals on site and to detect early any significant leak or spill of chemicals through periodic inspection or audit