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Gravity Grease Interceptor Installation Specifications <br />r T r <br />I I I I <br />I I I I <br />I I I <br />I I I I <br />I I I I <br />I I I I <br />I I I <br />G" INLETS <br />I I I <br />I I I I <br />I I I I <br />I I I I <br />I I I I <br />I I I I <br />I I I I <br />L_________________J L________J <br />STANDARD TOP <br />BLOCKS REQUIRED <br />AT EACH MANHOLE <br />COVER <br />6" INLET <br />(SEE NOTE 6) <br />Installation Requirements: <br />(MH FRAMES. COVERS & RINGS NOT SHOWN) <br />-24" CAST IRON FRAME <br />AND COVER (BOLT DOWN) <br />SAMPLING <br />MANHOLE/U"X <br />CLERNOUT <br />FLOW <br />6" OUTLET <br />SAMPLING <br />MANHOLE/BOX <br />TCLLANCUT <br />6" OUTLET <br />r6' <br />6" CUTLET <br />PRECAST INTERCEPTOR <br />PER APPROVED MATERIAL <br />LIST <br />• New construction <br />• Remodel/change in operation <br />• Under -slab plumbing <br />• Causing or contributing to an accelerated line maintenance location <br />• Interceptors are not intended for the introduction of domestic sewage <br />• Sample Box Required <br />• Manhole lid access over each baffle tube required <br />• Interceptor located in an area subject to traffic must be HS-20 traffic rated <br />• Alternative materials considered (e.g., HDPE or fiberglass) <br />• Interceptor must have IAPMO approval <br />• Use of cast iron pipe for grease interceptor applications is prohibited <br />• Installed on exterior of building <br />o Avoid drive-thru lanes <br />o Accessible for inspection and maintenance <br />o Minimum 2% gravity flow <br />