Hazel Run: Upgrading Your Wastewater Treatment: You Have Choices

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Information about Hazel Run: Upgrading Your Wastewater Treatment: You Have Choices

Published on November 26, 2008

Author: dmalchow

Source: slideshare.net

Description

A presentation delivered to leaders of a western Minnesota community to offer information about community-level wastewater treatment options.

Note to Reviewers: I conducted the first portion of this presentation to help community members understand that Hazel Run has a number of options for wastewater treatment, the difference between their current non-compliant systems and compliant septic systems, and the need for systems management. Dan Wheeler from the Onsite Sewage Treatment Program was the presenter for the second portion of this slide set.

Upgrading your wastewater treatment: You have choices

Please turn off or silence your cell phone Thanks!

Upgrading Your Wastewater Treatment: You Have Choices Doug Malchow, Extension Educator On-Site Sewage Treatment Program 507-280-5575 [email_address] http://septic.umn.edu (no www in front) Click on “Information for Communities”

Professional Training – Designers, Inspectors, Pumpers, Installers Research and Demonstration Homeowner Operation & Maintenance Small Community Wastewater Solutions

Professional Training – Designers, Inspectors, Pumpers, Installers

Research and Demonstration

Homeowner Operation & Maintenance

Small Community Wastewater Solutions

Decentralized Systems: Onsite collection and onsite or nearby treatment Individual or multi-household (cluster) Standard - trenches, mounds, at-grades Alternative Systems- pre-treatment final treatment/dispersal separation Water supply options

Individual or multi-household (cluster)

Standard - trenches, mounds, at-grades

Alternative Systems-

pre-treatment

final treatment/dispersal

separation

Water supply options

Anatomy of a Septic System Plumbing : wastewater collection Septic tank : primary treatment Soil treatment system : final treatment and dispersal

Plumbing : wastewater collection

Septic tank : primary

treatment

Soil treatment

system :

final treatment

and dispersal

A Compliant System Requires a Water Tight Tank

System Components: the Drainfield Source Tank Drainfield (In Ground) Treatment in Soil Saturated Zone or Confining Layer Well 3 feet

Mound System Drainfield Saturated Zone or Confining Layer Drain lines Rock Topsoil Sand 2 feet 3 feet

A mound is a slightly more advanced type of “standard” system Source Septic Tank Mound Drainfield Soil Pump Tank with pump (requires electricity)

Cluster Septic Systems Some components of septic or individual sewage treatment systems (ISTS) are shared amongst neighbors Shared components can vary Systems basically operate in the same manner as ISTS There are however some differences to consider

Some components of septic or individual sewage treatment systems (ISTS) are shared amongst neighbors

Shared components can vary

Systems basically operate in the same manner as ISTS

There are however some differences to consider

Cluster Treatment System Components Sources Septic Tank Pre-Treatment

A Cluster Drainfield

Municipal Style System (Collection with centralized treatment) Industry Wastewater Treatment Plant Residences Storm Sewer Sanitary Sewer

Stabilization Pond Natural purification process under controlled conditions, typically a spring/fall discharge to surface waters. Often used for small communites Surface discharge to water body Requires MPCA permit

Often used for small communites

Surface discharge to water body

Requires MPCA permit

Trickling Filter

Any Wastewater Treatment System Requires Management The city will be required to provide management services Soil-based septic systems require more active management on the part of the homeowner Ongoing education is the key for proper care of septic systems Septic system care can be achieved by following some easily understood management tips

The city will be required to provide management services

Soil-based septic systems require more active management on the part of the homeowner

Ongoing education is the key for proper care of septic systems

Septic system care can be achieved by following some easily understood management tips

Home Management tips: small changes equals big impacts Tank pumping Other water using devices Bathrooms Kitchen Laundry Soil treatment system Freezing Landscaping

Tank pumping

Other water using

devices

Bathrooms

Kitchen

Laundry

Soil treatment system

Freezing

Landscaping

Criteria for selecting a treatment system Treatment – protect health & environment Life-cycle costs - installation, operation, maintenance, repairs, monitoring,replacement Sustainability Appearance Reliability Degree of management Space requirement Flexibility Community values and culture Consistent with land use plan

Treatment – protect health & environment

Life-cycle costs - installation, operation, maintenance, repairs, monitoring,replacement

Sustainability

Appearance

Reliability

Degree of management

Space requirement

Flexibility

Community values and culture

Consistent with land use plan

Questions???

The following portion of the presentation was given by Dan Wheeler, registered soil scientist with the University of Minnesota Onsite Sewage Treatment Program. Dan was the lead field staff for the site evaluation process and could best answer questions related to each parcel’s characteristics and wastewater needs.

City of Hazel Run, MN – Wastewater Assessment & Options Completed by:

Outline Issue Methods Assessment Options Recommendation Reports

Issue

Methods

Assessment

Options

Recommendation

Reports

Issue: Wastewater Treatment Public health Environmental protection Sustainability of small communities Efficient investment of resources Utilize existing and future best management practices Widespread

Public health

Environmental protection

Sustainability of small communities

Efficient investment of resources

Utilize existing and future best management practices

Widespread

Hazel Run is Not Alone! 1,043 Total 78 Southwest 108 Northeast 126 Metro area 162 Southeast 195 North central 374 Northwest Number of Communities Region

What is “proper” wastewater treatment? Septic tank - water-tight Drainfield – Soil treatment area “ treat and disperse effluent” 3 feet (minimum) of unsaturated soil beneath Size is according to bedrooms Effluent must remain below-grade

Septic tank - water-tight

Drainfield – Soil treatment area

“ treat and disperse effluent”

3 feet (minimum) of unsaturated soil beneath

Size is according to bedrooms

Effluent must remain below-grade

Methodology Conduct a site-by-site investigation Utility locates Compile existing information Soils, County permits, Parcel maps, Water service maps, etc. Inspect septic tank Pump, if tank could be watertight Go “fishin’! ” Locate and determine soil treatment area Conduct soil boring to determine saturation and suitability Verify utility locations Determine elevations Record all information

Conduct a site-by-site investigation

Utility locates

Compile existing information

Soils, County permits, Parcel maps, Water service maps, etc.

Inspect septic tank

Pump, if tank could be watertight

Go “fishin’! ”

Locate and determine soil treatment area

Conduct soil boring to determine saturation and suitability

Verify utility locations

Determine elevations

Record all information

2-1 (west)

 

Keep sewage on property Existing & Compliant (5) $500 O&M/year Holding tank (12) $5,000 + $1,200/600 O&M/year Type 1 Mound (10) $11,500 + $500 O&M/year Type 3 Mound (4) $13,000 + $500 O&M/year Abandon existing tanks (30) $4,500

Keep sewage on property

Existing & Compliant (5)

$500 O&M/year

Holding tank (12)

$5,000 + $1,200/600 O&M/year

Type 1 Mound (10)

$11,500 + $500 O&M/year

Type 3 Mound (4)

$13,000 + $500 O&M/year

Abandon existing tanks (30)

$4,500

All dwellings have a soil treatment area Existing & Compliant (5) $500 O&M/year Holding tank (3) $5,000 + $1,200/600 O&M/year Type 1 Mound (10) $11,500 + $500 O&M/year Type 3 Mound (4) $13,000 + $500 O&M/year Cluster mounds (5) $13,800-16,300/lot + $700 O&M/year Abandon existing tanks (30) $4,500

All dwellings have a soil treatment area

Existing & Compliant (5)

$500 O&M/year

Holding tank (3)

$5,000 + $1,200/600 O&M/year

Type 1 Mound (10)

$11,500 + $500 O&M/year

Type 3 Mound (4)

$13,000 + $500 O&M/year

Cluster mounds (5)

$13,800-16,300/lot + $700 O&M/year

Abandon existing tanks (30)

$4,500

Larger School & Martin Clusters Existing & Compliant (4) $500 O&M/year Holding tank (2) $5,000 + $600 O&M/year Type 1 Mound (10) $11,500 + $500 O&M/year Type 3 Mound (3) $13,000 + $500 O&M/year Cluster mounds (5) $13,800-16,300/lot + $700 O&M/year Abandon existing tanks (30) $4,500

Larger School & Martin Clusters

Existing & Compliant (4)

$500 O&M/year

Holding tank (2)

$5,000 + $600 O&M/year

Type 1 Mound (10)

$11,500 + $500 O&M/year

Type 3 Mound (3)

$13,000 + $500 O&M/year

Cluster mounds (5)

$13,800-16,300/lot + $700 O&M/year

Abandon existing tanks (30)

$4,500

Large School Cluster Existing & Compliant (4) $500 O&M/year Holding tank (2) $5,000 + $600 O&M/year Type 1 Mound (10) $11,500 + $500 O&M/year Type 3 Mound (3) $13,000 + $500 O&M/year Cluster mounds (5) $13,800-16,300/lot + $700 O&M/year Abandon existing tanks (30) $4,500

Large School Cluster

Existing & Compliant (4)

$500 O&M/year

Holding tank (2)

$5,000 + $600 O&M/year

Type 1 Mound (10)

$11,500 + $500 O&M/year

Type 3 Mound (3)

$13,000 + $500 O&M/year

Cluster mounds (5)

$13,800-16,300/lot + $700 O&M/year

Abandon existing tanks (30)

$4,500

2 Large Clusters Existing and Compliant (1) $500 O&M/year Type 1 Mound (10) $11,500 + $500 O&M/year Holding tank (3) $5,000 + $600 O&M/year Cluster mounds (5) $16,200-39,800/lot + $700 O&M/year Abandon existing tanks (30) $4,500 *Does not include land purchase price

2 Large Clusters

Existing and Compliant (1)

$500 O&M/year

Type 1 Mound (10)

$11,500 + $500 O&M/year

Holding tank (3)

$5,000 + $600 O&M/year

Cluster mounds (5)

$16,200-39,800/lot + $700 O&M/year

Abandon existing tanks (30)

$4,500

*Does not include land purchase price

Clarkfield municipal wastewater treatment connection $20,277/parcel - connection fee $4,500 tank abandonment Does NOT include O&M Easement costs ($3/lineal ft) Class D Operator Fees

$20,277/parcel - connection fee

$4,500 tank abandonment

Does NOT include

O&M

Easement costs ($3/lineal ft)

Class D Operator

Fees

Hazel Run – Settling Ponds $47,756/parcel - connection fee $4,500 tank abandonment Does NOT include O&M Easement costs Class D Operator Land acquisition (10 acres)

$47,756/parcel - connection fee

$4,500 tank abandonment

Does NOT include

O&M

Easement costs

Class D Operator

Land acquisition (10 acres)

Recommended Option $377,900 capital cost No capital cost for existing and compliant ISTSs Legion & City Hall only holding tanks $11,500-16,300 for new ISTSs Clusters treat wastewater off-lots that are not suitable Small clusters (<2,500 gallons/day)

$377,900 capital cost

No capital cost for existing and compliant ISTSs

Legion & City Hall only holding tanks

$11,500-16,300 for new ISTSs

Clusters treat wastewater off-lots that are not suitable

Small clusters (<2,500 gallons/day)

Reporting Community Assessment Report (CAR) Complete, awaiting comments from community, Pollution Control Agency, and USDA-Rural Development 4 complete copies to City Council Preliminary Engineering Report (PER) Draft ready for comment

Community Assessment Report (CAR)

Complete, awaiting comments from community, Pollution Control Agency, and USDA-Rural Development

4 complete copies to City Council

Preliminary Engineering Report (PER)

Draft ready for comment

Questions / Comments?

The following three slides were not presented at the community meeting but were included in case we needed to find and show community members cost numbers associated with individual parcels during the meeting.

The following three slides were not presented at the community meeting but were included in case we needed to find and show community members cost numbers associated with individual parcels during the meeting.

 

 

 

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