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§ 8.30 3. The size of the effluent dose she]] be determined by design of the soil treatment ~n~t, but in no case shall the dosing chazaP,-r be s~d ~ p~de a dose of less ~.h~n 75 ~ ~~. For G~ 1. A p~mp or siphon s~ deliver ~a dose to ~e soil treatment ~t for ~a~ ~s~bu~on over ~e soft traa~ent area. 2. For sys~ms for dwe]Nngs, ~e doses de~ce sh~l ~scharge at ]s~t 600 g~ons per ho~, but no more ~ 2,700 per ho~. 2. For o~ar es~blisb~ents, ~e dosing de~ce shoed at a ra~ at ]east 10% ~eater ~ ~e wa~r supply flow but no laser th~ the ra~ at w~ch e~uent ~11 flow out of ~e ~st~bu~on de~ce. 4. ~ the dosing de~ce is a siphon, a mMntenance ~nspec~on sh~l be made eve~ s~ monks ~d a repo~ shM1 be ~ ~e adm~stra~r. ~e s~phon shM1 be toast,ned in proper opera,s., con~on. ~ ~e doses de~ce is a p~p, it sh~ be cast iron or bronze fitted ~nd ~th 2~n]ess s~al s~ews or const~cted of othec so~d, d~able ~d co=osion-resis~t mate~als. 6. ~ere the soft treatment ~ea is at a ~gher elevation than the p~p, s~:~ent d~~c head shM] be prodded for both the eleva~on ~arence ~d ~c~on loss. 7. ~ere the doses de~ce is a pv~p, ~ M~ de, ce shM] be instated to wazn of p~p failure. Pot dwellings, there shoed be rese~e storage volt, me equ~ to one day's sewage flow based on ~e ~o~nts spewed for n-tuber of be~ooms in ~8.30.04 Subd. 3c. Pot other establis~ents,. capacity shoed be based on the nat~a..of ~a ~ty, but no ~se sh~ ~t be less th~n 25% of ~e d~y sewage flow. ~ng ~~ For ~ ~bu~o~ 1. The dosing de~ce sh~l be a p~p w~ch ~s cast iron or. broke fit~d ~d ~th s~ess steel screws or const~ctsd of so~d, durable and co=osion-res~st~t mate~als. ~e p~mp ~scharge capa~ty sh~l be at least 7-~2 gallons per ~ute for ea~ 100 square feet of soft tree,ant area. ~e p~mp ~scharge head sh~l be at least 5 feet ~eatar than the head req~red to overcome p~pe friction losses and the eleva~on ~fferanca between the px~p ~d the ~st~but~on dex~ce. Page 2.48 Printed 12/22/90