New Brunswick Technical Guidelines for On-site …

1 New Brunswick Technical Guidelines for On-site sewage disposal Systems Version 5 Health February 2016 Version 5 Replaces: All Previous Page 2 of 67 Table of Contents 1 GENERAL .. 4 Abbreviations .. 4 Conversion Factors .. 5 Department of Public Safety (DPS), Technical Inspection Services Head Office .. 6 2 INTRODUCTION .. 6 3 LOT EVALUATION .. 7 Soil 7 Slope and Interceptor Drains .. 9 Separation Distances .. 10 Watercourses & Wetlands .. 11 Wells .. 11 Exemptions .. 11 Lot Layout .. 12 Planning .. 13 4 On-site sewage disposal SYSTEM DESIGN.

2 13 Estimated Daily sewage Flow .. 13 System Sizing .. 13 Septic Tank .. 14 Conventional Design .. 16 Pipe and Stone In-ground Trench .. 17 Raised Mound Trench System .. 20 Imported Sand .. 20 Apron and Taper .. 22 Leaching Chamber (Concrete) .. 23 Infiltrative Chamber (Plastic) .. 25 Approved For Use in New Brunswick .. 26 Holding Tank .. 26 Pit Privy .. 28 Pump .. 29 Grease Trap or Chamber .. 32 Oil / Water Separator .. 33 Repairs .. 34 Non-Conventional Design .. 34 5 ADMINISTRATION .. 37 Licensing .. 37 Licensing Requirements.

3 37 Issuance .. 38 Revoking a licence .. 38 Course and Exam .. 38 Application Process .. 39 Application Form Part 1 .. 39 Design Proposal Part 2 .. 40 Other Important Notes about the Application .. 44 Audit Process .. 45 Version 5 Replaces: All Previous Page 3 of 67 Application Process .. 46 Review of Applications .. 47 Full Desk-top Review .. 48 On-site Audit .. 49 Revoking an Approval to Install .. 50 Certificate of 50 6 50 APPENDIX A: Flow Diargram for Estimating Soil Texture by Feel & Structure Types.

4 51 APPENDIX B .. 53 Minimum size building lot and septic tank, and minimum length of distribution pipe in an in-ground trench On-site sewage disposal system in relation to estimated daily sewage flow and 53 APPENDIX B1 .. 53 Minimum size building lot and septic tank, and minimum number of 4'x8' concrete units in an in-ground trench On-site sewage disposal system in relation to estimated daily sewage flow and permeability .. 53 APPENDIX C .. 54 Test Hole Requirements .. 54 APPENDIX D .. 55 Estimated Daily sewage Flows .. 55 APPENDIX D - Estimated Daily sewage 56 APPENDIX E.

5 61 Influent Wastewater Quality .. 61 APPENDIX F .. 62 Septic Tank Sludge and Scum Accumulation Rates for Other Than Residential .. 62 7 REFERENCES .. 67 Version 5 Replaces: All Previous Page 4 of 67 1 GENERAL Abbreviations cm Centimetre cm/sec Centimetre per second (velocity or speed) CSA Canadian Standards Association cu. Cubic ESF Estimated sewage Flow EDSF Estimated Daily sewage Flow ft Foot G Gallon g Gram ha Hectare hr Hour l Hydraulic gradient IG Imperial gallon IG per sq. ft Imperial gallon per square foot I gal Imperial gallon per day (flow) in Inch K Soil permeability or hydraulic conductivity kg Kilogram kPa Kilopascals l or L Litres L/p/yr Litres per person per year L/sq.

6 M Litres per square meter lb Pound lpd Litres per day (flow) m Metre mi Mile min Minute mm Millimetre m/sec Metre per second (velocity or speed) m2 Square metre m3/sec Cubic metre per second (flow) m3 Cubic metre NSF National Sanitation Foundation PHA Public Health Act PID Property Identification Number psi Pounds per square inch Q sewage flow sec Second sq. Square USG US gallon yd Yard Version 5 Replaces: All Previous Page 5 of 67 Conversion Factors 1 lb = kg 1 kg = lbs 1 in = cm 1 cm = in 1 ft = m 1 m = ft 1 yd = m 1 m = yd 1 yd = in 1 m = in 1 mi = km 1 km = mi 1 sq.

7 In = sq. cm 1 sq. cm= sq. in 1 sq. ft = sq. m 1 sq. m = sq. ft 1 sq. yd = sq. m 1 sq. m = sq. yd 1 acre = ha 1 ha = acres 1 acre = 43560 sq. ft or x ft 1 hectare = 10,000 sq. m 1 sq. mi = 259 hectares 1 sq. kilometre = sq. mi 1 sq. mi = sq. km 1 cu. cm = cu. in 1 cu. in = cu. cm 1 cu. dm = cu. ft 1 cu. ft = 28,317 cu. cm 1 L = cu. ft 1 cu. ft = IG 1 cu. meter = cu. yd 1 cu. ft = L 1 cu. meter = cu. ft 1 cu. yd = cu. m 1 cu. m = 220 IG 1 cu. yd = 168 IG 1 cu. m = 1000 L 1 cu.

8 Yd = 765 L 1 L = IG 1 IG = L 1 L = USG 1 IG = .0045 cu. m 1 USG = .028 cu. ft 1 IG = cu. in 1 KPa = psi 1 IG water = 10 pounds 1,000 mm pressure head = kPa 1 USG = L 1 kPa = 102 mm pressure head 1 USG = .00378 cu. m 1 kPa = ft pressure head 1 IG = 49 L per sq. m 1 L per sq. m = IG per sq. ft 1 IG = USG 1 L per sq. m = 1 mm depth of effluent 1 USG = IG 1 IG per sq. ft = in depth of effluent 1 ft pressure head = mm pressure head 1 ft pressure head = psi 1 psi = ft pressure head 1 psi = kPa Version 5 Replaces: All Previous Page 6 of 67 Department of Public Safety (DPS), Technical Inspection Services Head Office Mailing Address: 460 Two Nations Crossing Fredericton, NB E3A 0X9 DPS Toll Free Number: 1-844-249-6533 Fax Number.

9 (506) 457-7394 2 INTRODUCTION These Technical Guidelines have been established as part of, and in accordance with, regulations respecting On-site sewage disposal Systems under the Public Health Act (PHA). These Guidelines outline the siting and Technical requirements to install, repair, construct, or replace an On-site sewage disposal system in the Province of New Brunswick . Use of the information contained herein will be fundamental to ensuring compliant installations and reducing the risk to public health and the environment.

10 Licensees must follow manufacturer s Guidelines for all parts and materials in respect to the installation of any On-site sewage disposal system. An On-site sewage disposal system , as defined in the PHA, means a septic tank with subsurface disposal field and all other On-site sewage disposal systems that are not connected to a wastewater treatment facility approved by the Minister of Environment and Local Government under the Clean Water Act (CWA). An On-site sewage disposal system can be classified as either conventional or non-conventional.