(a) Pool plant means a plant of a dealer as defined in section 22.10 of this Part approved by a health authority as a source of fluid milk products for the marketing area and where milk is received from producers, pool plants or bulk tank units or other plants for processing of fluid milk products for distribution in the marketing area or for transfer to other plants.

(b) Nonpool plant means a plant of a dealer other than a plant defined in subdivision (a) of this section with route distribution in the marketing area but which has no receipts from producers.