Post Office Box 550

404 East Willow Street Scottsboro, Alabama 35768

256.574.1515 256.574.1744 Fax 256.574.1965

STANDARD SANITARY

SEWER SPECIFICATIONS

REVISION 2017-1

Revised August 2017 2

TABLE OF CONTENTS

Contractor Credentials ................................................................................................................................................... 4 Certificate of Insurance .................................................................................................................................................. 4 Materials ........................................................................................................................................................................ 4 As-Built Drawings ......................................................................................................................................................... 4 Conveyance .................................................................................................................................................................... 4 Water/Sewer Project Check List .................................................................................................................................... 5

DESIGN CRITERIA FOR MANHOLES AND PIPING ...................................................................................... 6 1.1 General ............................................................................................................................................................ 6 1.2 Manhole Materials and Construction ............................................................................................................... 6 1.3 Flow Channel .................................................................................................................................................. 7 1.4 Bench............................................................................................................................................................... 7 1.5 Manhole Types ................................................................................................................................................ 7 1.6 Manhole Frames and Covers ........................................................................................................................... 7 1.7 Hydraulic Grade Lines ..................................................................................................................................... 7 1.8 Location of Manholes ...................................................................................................................................... 7 1.9 Connecting to Existing Sewers ........................................................................................................................ 7 1.10 Pipe Minimum ............................................................................................................................................... 8 1.11 Pipe Depths.................................................................................................................................................... 8 1.12 Force Main Valves ........................................................................................................................................ 8 1.13 Force Main Air & Vacuum Valves ................................................................................................................ 8

DESIGN CRITERIA FOR SERVICE LATERALS ............................................................................................. 9 2.1 General ............................................................................................................................................................ 9 2.2 Service Lateral Diameters................................................................................................................................ 9 2.3 Pipe Materials and Ratings .............................................................................................................................. 9 2.4 Installation ....................................................................................................................................................... 9 2.5 Sewer Service Requirements (Residential and Commercial) ......................................................................... 10

2.5.1 Residential Sewer ................................................................................................................................... 10 2.5.2 Commercial Sewer ................................................................................................................................. 10

2.6 Sewer Service Requirements (R.V. and Mobile Homes) ............................................................................... 10 EXCAVATING, BACKFILLING AND COMPACTING FOR SANITARY SEWERS ...................................11

3.1 Excavating ..................................................................................................................................................... 11 3.2 Backfill Requirements ................................................................................................................................... 11 3.3 Crushed Stone................................................................................................................................................ 11

CONSTRUCTION REQUIREMENTS ................................................................................................................12 4.1 Quality Assurance ......................................................................................................................................... 12 4.2 Existing Utilities ............................................................................................................................................ 12 4.3 Protection of Persons and Property ................................................................................................................ 12 4.4 Tolerances ..................................................................................................................................................... 12 4.5 Shoring and Bracing ...................................................................................................................................... 12 4.6 Pipe Laying ................................................................................................................................................... 13 4.7 Backfill and Fill ............................................................................................................................................. 13

4.7.1 General ................................................................................................................................................... 13 4.7.2 Pipe Bedding .......................................................................................................................................... 14 4.7.3 Backfilling Trenches .............................................................................................................................. 14

4.8 TESTING METHODS AND SPECIFICATIONS......................................................................................... 15 4.8.1 General ................................................................................................................................................... 15 4.8.2 Gravity Sewer Testing ............................................................................................................................ 16 4.8.3 Manhole Testing ..................................................................................................................................... 17 4.8.4 Television Inspection ............................................................................................................................. 17

4.9 Ditch-line Restoration and Landscaping ........................................................................................................ 17 4.10 Hydrostatic Testing of Pressure Sewer Pipe ................................................................................................ 17

FATS, OILS & GREASE (FOG) MANAGEMENT GUIDELINES...................................................................18

Revised August 2017 3

5.1 REQUIREMENTS ........................................................................................................................................ 20 5.2 Certified Hauler/Plumber Program ................................................................................................................ 22 5.3 Grease Interceptor (GI) Cleaning/Maintenance Requirements ...................................................................... 23 5.4 Grease Trap (GT) Cleaning/Maintenance Requirements ............................................................................... 23 5.5 Additives ....................................................................................................................................................... 24 5.6 Enforcement Action ....................................................................................................................................... 24 Fats, Oil, and Grease Interceptor User Compliance Report ................................................................................. 25

SPECIFICATIONS FOR RESIDENTIAL GRINDER PUMPS ...............................................................................26 6.1 General .......................................................................................................................................................... 26 6.2 Low Pr