CA Health & Safety Code Section 9703

(a)

A pet cemetery owner may dispose of the remains of any pet which has been left for more than seven days at the pet cemetery if arrangements have not been made with the pet cemetery owner for the disposition of the pet.

(b)

A pet cemetery owner shall post a notice conspicuous to the public on the cemetery site stating that the remains of any pet which has been left for more than seven days at the pet cemetery may be disposed of if arrangements have not been made with the cemetery owner for the disposition of the pet.