The well owner is responsible for permanent abandonment of a well except when:
All casing and screen materials may be removed prior to initiation of abandonment procedures if such removal will not cause or contribute to contamination of the groundwater
Requirements for valves and casing on artesian wells is
The uppermost three feet of well casing shall be removed from the well for a bored well or hand dug water supply
Calculate the well volume where: V = ( (3.14*(D)(D))/4) * d; D=2in; d=70ft