DoD/Norfolk Naval Shipyard, N-45 Environmental Compliance. This RCRA field demonstration was conducted at the request of Ms. Sherri Goodman, DUSD/Environmental Security. The study was conducted to explore the usability and utility of the Liquid Sampler in the trenches. A questionnaire was prepared that rated the Liquid Sampler against an equivalent COLIWASA. The results indicated that the Liquid Sampler out-performed the COLIWASA in all testing criteria. Additionally, an annual cost comparability assessment the Liquid Sampler will have saved an estimated 60% in hardware costs alone, and countless savings in improved data quality.