District of Sechelt Preliminary Report

District of Sechelt
Bio-Solids Processing Options Report
TABLE OF CONTENTS
EXECUTIVE SUMMARY ......................................................................................................... ES-1
1.0 INTRODUCTION .................................................................................................................. 1
1.1 SUBJECT AND PURPOSE ............................................................................................................. 1
1.2 SCOPE .................................................................................................................................. 1
1.3 METHODOLOGY ....................................................................................................................... 1
2.0 PROJECT HISTORY ............................................................................................................. 2
2.1 BACKGROUND ......................................................................................................................... 2
2.2 PRE-DESIGN METHODOLOGY ...................................................................................................... 3
3.0 BIOSOLIDS PRODUCTION .................................................................................................. 7
3.1 WHAT ARE BIOSOLIDS .............................................................................................................. 7
3.2 THE MECHANISM OF BIOSOLIDS PRODUCTION ................................................................................. 7
3.3 BIOSOLIDS QUANTITY ESTIMATES ................................................................................................ 8
4.0 RECYCLING BIOSOLIDS ...................................................................................................12
4.1 BIOSOLIDS REGULATIONS ........................................................................................................ 12
4.1.1 Class A and Class B Biosolids .................................................................................. 12
4.1.2 Class A and Class B Compost .................................................................................. 13
4.1.3 Biosolids Growing Medium ...................................................................................... 13
4.2 OTHER QUALITY PARAMETERS .................................................................................................. 13
4.3 SITE SELECTION .................................................................................................................... 14
4.4 THE INITIAL SITES EXAMINED ................................................................................................... 14
4.5 THE SITE COMPARISON CRITERIA .............................................................................................. 15
4.6 SITE A ................................................................................................................................ 15
4.7 SITE B ................................................................................................................................ 16
4.8 SITE C ................................................................................................................................ 16
4.9 FURTHER INVESTIGATION OF LOT L ............................................................................................ 17
4.10 SITE ASSESSMENTS OF LOT L ................................................................................................... 17
5.0 BIOSOLIDS TRANSFER .....................................................................................................20
Page (i)
1592.0026.01 / December, 2010
U:\Projects_KEL\1592\0026\01\R-Reports-Studies-Documents\Draft\2010-11-REP-BiosolidsProcessing Options Comparison Pre-Design Study (rev3).doc