O S T D S .................................................. 3 7 L an d U ses ..................................... ..........................................................3 7 Summary of Total and Relative Loads.................. ....... ...............38 Results from the Contingent Valuation Survey of Columbia County ..................................41 D escriptiv e Statistics.............................................................................. ............ 4 1 Logit Analysis ................ ................................................... ......... 43 Interpretation of Regression Results .................................. .............................. ....... 45 M ean W T P ...................................................................4 6 5 CONCLUSIONS AND LIMITATIONS................................................... ..................48 S u m m ary o f S tu d y ....................................... ............................................................. .. 4 8 L im stations and A ssum options ........................................................................ ...................49 L im itatio n s ................................................................5 0 A ssu m option s .................................................................................................... 50 C onclu sions.......... ..........................................................5 1 APPENDIX A LAND-USE MAP OF THE ICHETUCKNEE SPRINGSHED ....................................... 53 B CONTINGENT VALUATION SURVEY: IMPROVING WATER QUALITY IN THE IC H E T U C K N E E R IV E R ................................................................................................. 54 C COMPLETE STATISTICAL RESULTS ....................................... ...............61 Survey Response Results ......... .. ... ........ ......................61 LIST OF REFERENCES ....................................... ... ............. ............... 65 B IO G R A PH IC A L SK E T C H ................................................................................................... 68 6