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environ Tank Sump Manual OD1.4 Structural Integrity 1.2 Independent Testing i sumps are listed Properly selected materials combined with a structurally enhanced All Environ one piece tank sumps and piping design allow tank sumps to resist the forces associated with backfill, with Underwriters Laboratories, Inc., (ULA).These sumps were high round water,and ground movement.All sumps are rotationally molded of a high density polyethylene(rotational grade), which is a tested in accordance with UL's"Standard Testing Procedure for g Underground Dispenser Sumps and Tank Sumps." These very durable and crack resistant semi-rigid plastic.The multi-sided an components are listed under file#MH 19391. The scope of the tests include broad compatibility testing for both petroleum ribbed base,the ribbed riser section and the graduated riser to base products and burial environments as well as physical testing step section further contribute to the overall strength of the sump. to confirm the sumps structural integrity and liquid tightness. High water tank sumps are available for jobsite applications , 1.3 Liquid Tightness which can have one or more of the following conditions: All tank sumps and accessory components are designed to prevent any external liquids from entering High groundwater • the sump, and liquids originating Ground movement within the sump from escaping into Sand backfillakt_ the surrounding environment. Compliance with the tank sump installation procedures are especially important in high ground water applications.Assembly and installation 1.5 Chemical Compatibility instructions must be followed to polyethylene or All tank sumps are made of high density p Y ensure the liquid tightness which isparam°untforenvironmer�ts afar fiberglass. Both materials are essentially inert and each has a Environ recommends hydrostatic testing on all sumps after long history of underground burial applications. These installation to verify proper sealing of joints and connections. materials have been used for the storage of along list of chemical solvents as well as hydrocarbon and alcohol based 1.3.1 Base/Riser Seals fuels. OThe deep burial tank sump and N rubber extended burial tank sump models All pipe entry seals are made of specially formulated Buna have separate base and riser compound which has been independently tested to insure its sections. The base/riser connection compatibility with a wide assortment of chemicals.These tests include _ measuring the material's retention of properties as well as its physical includes a gasket which is compressed - between the inwardly facing flanges characteristics of the seal after exposure. of base and riser sections. Steel `f compression ring segments installed on both the top and bottom of the 1.6 Corrosion Resistance joint assembly ensure an even All metal components used for sump compression seal when the 24 bolt fasteners are tightened. connections and sealing are either zinc or nickel plated, or made of stainless 1.3.2 Sump Covers steel. All metallic components are accessible from inside the sump. The All tank sumps are equipped with a sump and associated seals are non- watertight sump cover, which does metallic and should not corrode. not require the use of fasteners to affect a liquid tight seal. For added protection, optional hold-down latches are available to secure the lid firmly to the sump riser in high water table applications. 2. SPECIFYING TANK SUMPS Tank sumps are available in a variety of styles and sizes to accommodate most tank fining configurations and tank burial depths. 1.3.3 Pipe & Conduit Entry Seals Environ's patented tank sumps feature a bolt together riser-to-base construction on all two piece polyethelyne sumps. All sumps also Environ's flexible entry boots are feature patented watertight covers. All tank sumps are made of either the only type of sump entry seal polyethylene or fiberglass,both of which are compatible with ll fuels permitted for warranty coverage. and will not crack or break under burial loads.All tank sump models These composite rubber/metal type have height adjustable risers to accommodate different tank burial ® compression seals are installed in the depths. wall of the Tank Sump and provide a watertight connection for all pipe and conduit entries. 2