To protect space crews from contaminants in potable and hygiene water, NASA requested that the National Research Council (NRC) provide guidance on how to develop water exposure guidelines and subsequently review NASA's development of exposure guidelines for specific chemicals. Table of Contents Front Matter 1 Introduction Appendix 1: Chloroform Appendix 2: Dichloromethane Appendix 3: Di-n-butyl Phthalate Appendix 4: Di(2-ethylhexyl) Phthalate Appendix 5: 2-Mercaptobenzothiazole Appendix 6: Nickel Appendix 7: Phenol Appendix 8: N-Phenyl-beta-naphthylamine Appendix 9: Silver

Ray stielo walks upright, proud and over confident across the bridge of the Ravanger, the newest ship built for the resistance on Rihese. Ray summons his lieutenant to his side. Lieutenant Rance he says softely,"We have a code blue aboard this ship." Lt.Rance looks square into his commanders eyes and states" I'll assemble the men at once sir."