Laserfiche WebLink
Table 3. 1 <br /> Methods of Monitoring for Hazardous Substances <br /> utilizing thein the Secondary Container <br /> Section 264 procedures described in <br /> subchapter,3 of Article 4 of this <br /> (iii) Removal of all hazardous substances from fdthe0n Type of Liquid Hazardods ous of Nonitori Pressure or <br /> the underground storage tank and the condary Substance Level Substance Vapor Vacuum Loss <br /> secondary container (as specified in stem 111 Stored Indicator [21 Sensor 13I Monitor Detector [41 <br /> Subsection [dl of this section) , <br /> • (2) A program which relies on detecting the hazardous ty Volatile X X X X <br /> substance in the space between the primary and lry <br /> secondary container shall utilize one or more of the •L Nonvolatile X X X <br /> methods provided in Table Volatile X X X X <br /> followingll of this article. The et Nonvolatile X X X <br /> requirements shall apply when appropriate: <br /> A "dry" system does not contain liquid within the secondary container <br /> during normal operating conditions while a "vet" system does. <br /> Includes: continuously operated mechanical or electronic devices; <br /> manual determinations using mechanical, electronic, or "stick" <br /> !-readings;or visual determinations to detect the presence of any <br /> liquid in "dry" systems or a change in liquid levels in "wet" <br /> • systems. <br /> j Includes either qualitative or quantitative determinations of the <br /> presence of the hazardous substance. <br /> j primarily used for double—walled underground storage tanks to detect <br /> changes in pressure or vacuum between primary and secondary container. <br /> The use of pressure or vacuum must be approved as part of the primary <br /> and secondary container approval by a nationally recognized , <br /> independent testing organization. <br /> 3.7 3.8 <br />