TABLE OF CONTENTS 



Page 



INTRODUCTION 1 



DESCRIPTION OF SYSTEM 2 



FIGURE I - Diagram of Forced Aeration System 4 



COST OF OPERATION 6 



Capital Costs 6 



Table 1 - Capital Costs at Start of Composting (1975) .... 7 



Table 2 - Costs Incurred, Each Pile (1975) 8 



1977 Operations 8 



Table 3 - Costs Incurred, Each Pile (1977) 9 



DISCUSSION 9 



FUTURE PLANS 10 



IS COMPOSTING SAFE? 12 



TABLE 4 - Estimated Town Costs per Pile for Future 



Semi -Mechanized System 13 



TABLE 5 - Concentrations of Heavy Metals Through Composting 



Process, Durham, New Hampshire, 1973 to 1976 14 



SUMMARY 15 



LITERATURE CITED 17 



ADDITIONAL READING 18 



