| http://www.w3.org/ns/prov#value | - Chemicals other than chlorine, sodium or calcium hypochlorite, lime, soda ash, and aluminum sulfate shall not be used to treat swimming pool water without permission. 12 VAC 5-460-310 - Filter room placards A placard shall be prominently displayed showing the following data: (I) size of the swimming pool in feet and volume in gallons; (ii) capacity of the filters in square feet and gallons per min
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