A. Burden, standard of proof

The standard for the motion to quash requires the court to balance several factors including: (1) the relevance of the evidence; (2) the necessity of the information sought; (3) whether the information is available from other sources; and, (4) the nature of the proceeding. See Silkwood v. Kerr-McGee Corp., 563 F.2d 433, 438 (10th Cir. 1977); see also Grandbouche v. Clancy, 825 F.2d 1463, 1466 (10th Cir. 1987).