(a) Persons whose activities relate to weather modification activities, other than persons engaged in weather modification activities, shall maintain records concerning the identities of purchasers or users of weather modification apparatus or materials, the quantities or numbers of items purchased, and the times of such purchases. Such information shall be retained for at least 3 years.

(b) In addition, persons whose activities relate to weather modification shall be required, under the authority of section 4 of Public Law 92-205, to provide the Administrator, on his request, with information he deems necessary to carry out the purposes of this act.