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  #16  
Old 5/20/18, 10:48 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Flow Equalizer: Adjustment device to evenly distribute flow between outlets in a distribution box, even when it is not level.
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  #17  
Old 5/20/18, 10:53 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Infiltrative Surface: Interface where effluent moves from a distribution media into a treatment media or original soil.

Note: In a mound system there is an infiltrative surface between the distribution media and fill sand, and another between the fill sand and the in-situ soil.
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  #18  
Old 5/20/18, 10:54 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Lateral: Pipe to carry and distribute effluent.
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  #19  
Old 5/20/18, 10:57 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Limiting Layer: A condition in the soil profile that limits treatment or restricts movement of fluids. Examples include:

- soils with low or high permeability.
- impervious or fractured bedrock.
- seasonal or current ground water surface.
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  #20  
Old 5/20/18, 10:59 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Liner: Impermeable synthetic material used to prevent or restrict infiltration or exfiltration.

Note: The minimum thickness of a liner is 30 ml.
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  #21  
Old 5/20/18, 11:02 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Mound: Above original grade soil treatment.
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  #22  
Old 5/20/18, 11:03 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Nitrogen Reduction: 50% reduction of influent nitrogen strength.
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  #23  
Old 5/20/18, 11:05 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Percolation Test: Determines water absorption capacity of the soil.

Note: Expressed in minutes per inch of water.
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  #24  
Old 5/20/18, 11:06 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Permeability: Property of a material which permits movement of water through it.
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  #25  
Old 5/20/18, 11:09 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Riser: Watertight vertical cylinder and lid allowing access to an OWTS component.
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  #26  
Old 5/20/18, 11:10 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Sand Filter: A type of OWTS that uses a layer of sand as a filter and uses pressure distribution.
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  #27  
Old 5/20/18, 11:20 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Trench: Below-grade soil treatment area 3' wide or less containing distribution media and one lateral.
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  #28  
Old 5/21/18, 12:22 AM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Nice study guide, Nick!




Awards Committee Officer
SUBMIT YOUR AWARD NOMINATIONS HERE:
http://co.nachi.org/inachiawards/

The InterNACHI Awards Committee is the final authority of the issuance of any award the committee offers and any rules interpretation updates.
____________________________________________

Larry Kage, CMI Lifetime Member
State Licensed Builder since 1973
InterNACHI Lifetime Member
~retired~

The above post represents my personal opinion.
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  #29  
Old 5/22/18, 10:54 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

Abbreviations:

GPD: Gallons Per Day
ISDS: Individual Sewage Disposal System
LTAR: Long Term Acceptance Rate
MPI: Minutes Per Inch
NDDS: Non-pressurized Drip Dispersal Systm
OWTS: On-site Wastewater Treatment System
STA: Soil Treatment Area
TL: Treatment Level
TSS: Total Suspended Solids
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  #30  
Old 5/22/18, 11:04 PM
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Default Re: Weld County, Colorado On-Site Wastewater Treatment System Regulations Study Guide

If both a building permit and OWTS permit are issued for the same property, the OWTS permit shall expire at the same time as the building permit.

Otherwise, an OWTS expires in a year if construction is not commenced.
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