Cal. Food & Agr. Code § 62708.1
Any producer-handler who qualified and elected an exemption under Section 62708 and continued eligibility for such exemption by complying with the requirements of that section shall be entitled after January 1, 1978, to continue such exemption provided that such producer-handler maintains retail sales for his own account of not less than 50 percent of his total class 1 sales and his purchases do not exceed 25 percent of his total fluid milk sales, except that any purchases exceeding 5 percent of such sales shall be from pool sources.
Any producer-handler qualifying for and electing an exemption under Section 62708, and maintaining such exemption under Section 62708 and this section, may, after January 1, 1978, elect during the 61-day period of August 1 through September 30 of any year to obtain a production base and pool quota under Section 62708 and enter the pool subject to the option provision of Section 62708.5.
Ca. Food and Agric. Code § 62708.1