Remote Wastewater Systems TECH 220

1
Remote Wastewater Systems (TECH 220)
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Introduction

• What is an Remote WS
• how is it different from a std. system
• Why use it? Pros and Cons

3
History of use
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What did not work? Why?

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What is working? Why?
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State of Practice
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Definition of Term

• Std. 1
• Std. 2
• Std. 3
• Std. 4?

8
Components

• Tanks
• Pump tanks, pumps, controls, etc.
• Supply lines to drainfields
• Drainfields
• Soil

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Application and Permitting

• Health Dept Role
• Initial paperwork
• Stages or 1 stop
• Inspection
• Design (in house or consultant)

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Legal Issues

• Tri-party agreements
• Homeowner Associations or management entities

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OM issues

• Tri-party agreements
• Requires additional oversight
• Out of sight should not be out of mind

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Safety

• Installation issues
• Pressure testing
• Public access to drainfield

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Inspection

• Multiple visits
• Suggest protocol or procedure

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Supply Lines (what it is, why use it, how to use
it, where to use it)
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Pipes and fittings

• pressure rated vs non-pressure
• Types
• Ductile iron
• Slip fit vs solvent weld

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Pipes and fittings

• Size head loss calculation
• Scour velocity what will it due as it enters
  the trenches

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Pipes and fittings

• Air release valves
• At all high point in line
• when elevation change exceeds 10
• when length exceeds 1000 of line

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Pipes and fittings

• Pipe crossing
• Stream
• Roads sleeves
• Pipe over pipe
• Pipe over nasty jagged rock

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Pipes and fittings

• Pipe labeling or identification

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Pipes and fittings

• Glueing/priming

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Pipes and fittings

• Pressure testings
• Air
• Water

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Installation
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Design issues making it installation/inspection/
OM friendly

• Site visit prior to final design
• site access
• No (or limit) line crossings also known as
  smart design (logical)
• Type of access to site
• Access to drainfield
• Access to supply line
• Separation of access easements
• Location of other utilities

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Pipes

• Depth (safety)
• Drive ways
• per trench
• Type of Back fill and bedding
• Locator wire or plastic sheet
• Shock blocks
• Vaults
• Labeling
• Cleanouts/observation port
• Berms

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Drainfield installation

• As per state rules (or local)
• Install repair and initial at same time (pros and
  cons)
• Need for 2nd pump tanks
• Lift stations
• Dosing tank
• Need for larger pump/pump tanks