In carrying out the purposes of this part:
(a) Emphasis should be placed on encouraging recycling of scrap and junk where practicable, in accordance with the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 , et seq. );(b) Every effort should be made to screen nonconforming junkyards which are to continue as ongoing businesses; and(c) Nonconforming junkyards should be relocated only as a last resort.