1. ASTM: 1987, Standard Practive for Intralaboratory Quality Control Procedures and a Discussion of Reporting Low Level Data. American Society for Testing and Materials, Committee D-19, D4210-83, 11, 1, p. 9?18.
2. Barcelona, M. J., Gibb, J. P., and Miller, R. A.: 1983, A Guide to the Selection of Materials for Monitoring Well Construction and Groundwater Sampling, USEPA ? R.S. Kerr Environmental Research Laboratory, Ada, OK, #CR-809 966-01, ISWS Contract Report #327 (EPA 600/S2-84-024), 142 pp.
3. Barcelona, M. J., Gibb, J. P., Helfrich, J.A., and Garske, E. E.: 1986, Practical Guide for Groundwater Sampling, State Water Survey Contract Report #374 for RSKERL-Ada, OK, and EMSL-Las Vegas, NV (#CR-809 966-01 November, (EPA 600/S2-85-104), 94 pp.
4. Barcelona, M. J. and Gibb, J. P.: 1986, ?The Development of Effective Ground-Water Sampling Protocols?, Proceedings of Symposium on Field Methods for Ground Water Contamination Studies and their Standardization for the American Society for Testing and Materials, Feb. 2?7, Cocoa Beach, FL, ASTM STP-963.
5. Barcelona, M. J., Helfrich, J. A., and Garske, E. E.: 1986, ?Field Verification of Sampling Methods? and ?Materials Selection for Ground-Water Contamination Studies?, Proceedings of Symposium on Field Methods for Ground Water Contamination Studies and Their Standardization for the American Society for Testing and Materials, Feb. 2?7, Cocoa Beach, FL, ASTM STP-963.