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PUBLIC AEALTH SERNICES <br />SAN JOAQUIN COUNTY <br />ENVIRONMENTAL HEALTH DIVISION <br />Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br />304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br />209/465-3420 <br />May 7, 1997 <br />Environ Products, Inc. Geoflex <br />252 Welsh Pool Road <br />Lionville, PA 19341 <br />RE: REQUEST FOR APPROVAL OF GEOFLEX II PIPING FOR USE IN <br />UNDERGROUND TANK SYSTEMS <br />Geoflex II primary can be used for primary piping, and has UL -USA approval for this use. <br />Geoflex II secondary piping can be used as a secondary containment system, and has UL - <br />USA approval, if the following conditions of approval can be met: <br />1. Piping must be installed so that it is sloped so that all releases will flow to a <br />collection sump located at the low point of the underground piping. CCR, Title 23, <br />Section 2636 (c) <br />2. Secondary containment system must pass a minimum 5 psi pressure test for 30 <br />minutes prior to covering piping trench. Uniform Fire Code <br />3. Primary and secondary containment system must pass a percisson test upon <br />completion of final covering including all cement work. H & S Code, Section 25291 <br />(h) <br />4. Because the piping is flexible and may move in the back fill due to changes in <br />pressure in the line, and because this may cause abrasion of the secondary, secondary <br />piping must be tested every two years hydrostatically, or other approved method, if it <br />is to be placed directly in the back fill. If the piping is placed in the protective <br />containment tubing provided by Environ, no additional secondary pipe testing will be <br />required. <br />5. All piping installed within San Joaquin County must bear the UL -USA label approval <br />statement shown below, which was provided by Environ for this approval. Failure to <br />have the proper label on each piece of pipe will be grounds for disapproval. <br />'MHBI00 100 PSI PRIMARY & 10 PSI SECONDARY MAX WORKING PRESSURE - FOLLOW INSTALLATION <br />INSTRUCTIONS- 95192911 LISTED NONMETALLIC SECONDARY CONTAINMENT PIPING FOR PETROLEUM <br />PRODUCTS. ALCOHOLS & ALCOHOL MIXTURES - ISSUE JA -249- <br />A Division of San Joaquin County Health Care Sen -ices <br />