News Archive

Updated database (v. 2017-11-20) for download

New land uses, more reduction efficiencies from different types of facilities and more data of irreducible concentrations

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New treatment facilities to design! Biochar as addition!

Oil separator and Structural soil (Swe: Skelettjord) implemented as new treatment facilities. Addition of biochar (Swe: biokol) to the biofilter box.

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Updated database (v. 2017-07-19) for download

Updated database with many revised stormwater concentrations and new land uses

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Updated database v. 2017-06-04

The database is updated with frontpage, protected sheets and runoff coefficients (New!).

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Updated database (2017-03-19)

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Updated database 2017-01-22

Irreducible concentrations, reduction efficiencies and surface water data

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Updated database 2016-08-29

Reduction efficiencies of dissolved metal fractions and data of atmospheric deposition

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Updated database with uncertainties for both standard concentrations and reduction efficiencies

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New paper compiling design criteria for download

Biofilters, swales, grass ditches and infiltration trenches

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Updated files for download; standard concentrations and database, v. 2016-07-30

Calculation of uncertainties of standard concentrations from different land uses

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Updated file: StormTac data base, v. 2016-04

Updated data base with data for >160 substances and much more data from e.g. green roofs and other roofs

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Updated file: Standard concentrations, v. 2016-03-28

Updated file for download with concentration data from roofs, green roofs and 4 new land uses

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P110 implementation

Climate factors, return times, design runoff coefficients and safety factors

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Addes design features in StormTac Web: design of facilities in series and underground retention basins

Now all types of common stormwater transport, flow detention and pollutant treatment facilities can be designed in StormTac Web, with up to 10 facilities in series

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Description of land uses implemented in StormTac

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Updated data base for download with a large number of reference data of facility reduction efficiencies etc.

Data from biofilters, swales, grass ditches infiltration trenches and underground macadam basins

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Updated data base with surface water quality criteria

US EPA and Canadian criteria

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Updated standard concentrations v. 2015-10

Water quality criteria for surface water and for stormwater

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Updated data base with standard concentrations and reduction efficiencies of e.g. macadam ditches, v. 2015-10

Updated data of macadam ditches (infiltration trenches) and adjusted standard concentrations for stormwater

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Updated data base with standard concentrations and reduction efficiencies v. 2015-09

Accessed from Downloads - StormTac data

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Updated Web application Sept. 2015

Design of filter strips and added feature for designing wet ponds & wetlands

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Updated data base and standard concentrations v. 2015-06

Revised concentration data from blocks (Swedish: kvartersmark) and reduction efficiencies from EcoVaults.

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Updated Excel application v. 2015-04

Improved design of infiltration/percolation basins (and more..)

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Updated data base v. 2015-04

Addition of new data sheets for %dissolved and monthly & seasonal data.

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Updated web application May 2015

Explanations of data, project map grouping and file copying

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Updated data base and standard concentrations, v. 2015-02

New land uses and more substances!

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StormTac Web is here! (Release date 2015-02-15)

Web application features: automatic login from any computer, select language (English/Swedish), personal project library and more..

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Updated design with StormTac v. 2015-01!

Optional return time and updated design of e.g. open ditches, swales and retention basins!

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Serial stormwater treatment facilities in StormTac!

Possible in StormTac v. 2014-11

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New and updated design with StormTac v. 2014-11!

Design biofilters (rain gardens), macadam ditches and green roofs!

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Updated and new standard concentrations.

Included in StormTac v. 2014-11.

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Planned StormTac updates (new!)

Design of ditches, swales, retention basins & first release of the Web application

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Updated StormTac model

v. 2014-11

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Research news (stormwater and receiving water)

New memo compiling research news

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Standard concentrations and reduction efficiencies

New data: stormwater concentrations and facility reduction efficiencies

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Updated publications

Updated publications (design flow, detention volume and stormwater & surface water criteria)

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Consultant services (new!)

StormTac offers consultant services within the stormwater and receiving water area.

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Updated standard concentrations, July 2013

Updated standard concentrations and data from more land uses, July 2013

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Significant model updates, Aug. 2013

Significant model updates (e.g. updated standard concentrations, updated recipient model and updated calculations of reduction efficiencies)

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Significant model updates

Revised flow detention model, new recommended climate factors, new land use specific standard concentrations and more..

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Updated standard concentrations, Dec. 2012

Updated concentration data for storm water from roads, including >70 substances with data for different traffic intensities.

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Updated standard concentrations, Nov 2012

Updated concentration data for storm water and base flow, Nov 2012, especially regarding the 33 substances of priority, EU Water directive.

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Updated model description

Updated model description

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PM. Dimensionering av anläggningar för utjämning av dagvattenflöden. StormTac, v. 2012-09. (In Swedish)

Memo for download: "Dimensionering av anläggningar för utjämning av dagvattenflöden". (In Swedish)

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PM. Prognosticerade klimateffekter i Sverige för perioden 2071-2100 på dagvattenflöden. (In Swedish)

Memo for download: "PM. Prognosticerade klimateffekter i Sverige". (In Swedish)

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Updated standard concentrations

Updated concentration data from roads with different traffic intensities.

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Updated model description

New printscreens have been added

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New StorrmTac document file to be downloaded

1 new file of compiled concentration data

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Updated standard concentrations

Revised data for some of EUs 33 substances of priority

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New publications for download

2 new publications for download

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StormTac model version 2012-01 update

StormTac model has been updated with many new substances

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Support and education

Free support until further notice, suggested education content and costs

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Model description

The StormTac model description has been complemented and updated.

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Updated publications

Updated documents will be uploaded

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New standard concentration data

New standard concentration data

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Web application

StormTac develops a web application

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