only as provided in subsection (a) and not otherwise as accessory uses. The storage of sludge or toxic wastes, or both, is prohibited as an accessory use; provided that the temporary storage of sludge or toxic wastes
Read it in the chapter →How this ordinance defines it
The operative definition is the local one. Codes routinely subdivide a category into tiers — “day care 2, family”, “group home 2” — and attach different permissions to each, so only Albemarle County’s own text settles what this covers.