The Solicitation ENVIRONMENTAL QUALITY SAMPLING AND LABORATORY ANALYTIC SERVICES at Osan AB amended. The purpose of amendment is for below reasons:1. update attachment 4. Solicitation Questions and An... The Solicitation ENVIRONMENTAL QUALITY SAMPLING AND LABORATORY ANALYTIC SERVICES at Osan AB amended. The purpose of amendment is for below reasons:1. update attachment 4. Solicitation Questions and Answers.2. Update PWS - Delete table SOIL-TPH See attachments for more detail.