MixZon Inc

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Portland, OR, United States
We offer unique expertise in simulation modeling and site scale remote sensing and monitoring of mixing zones for water quality analysis and regulatory compliance.

Thursday, February 6, 2014

CORMIX May 2014 Online Training Series

Learn about buoyant jets, density stratification, density currents and more and
how these processes are modeled in CORMIX


Level 1 of this series (Modules 1.1 to 1.4) will provide regulatory background, the definition of Mixing Zones, descriptions and examples of physical Mixing Processes, and the CORMIX Mixing Zone model application and use.  (May 6, 8, 13, 17 from 11:00 - 1:00 PDT) $999/$899 Early Bird

Level 2 offers two modules of advanced topics covering:
  2.1 Tidal Conditions and Far Field Linkage (May 20 from 11:00 - 1:00 PDT) $599/$499 Early Bird
  2.2 Desalination, Brines, and Sediments (May 22 from 11:00 - 1:00 PDT) $599/$499 Early Bird

Level 3 (Modules 3.1 to 3.2) offers the advanced topic of Multiport Diffuser Design and Hydraulics Analysis. (Maya 27, 29 from 11:00 - 1:00 PDT) $999 / $899 Early Bird

Training Package of All Modules (1.1 through 3.2) is offered at $2799/$2499 Early Bird

†Early Bird tuition discount ends March 1, 2014

Additional details about course fees, session options offered, schedule, course content, registration details, and general logistics can be found at our website.


1. Please call us 503-222-1022 (M-F 9:00AM to 5:00PM Pacific Time) or
2. Email your completed registration form to support@mixzon.com or

3. FAX you registration form to 503-296-2354. 

Thursday, May 16, 2013

CORMIX Mixing Zone Model Training and Workshop - 2013

MixZon is sponsoring a 2-day CORMIX Mixing Zone Model Workshop to be held on the Portland State University campus in Portland Oregon, USA.
Engineers, scientists, regulators, and consultants are encouraged to attend.

Learn about buoyant jets, density stratification, density currents and more and
how these processes are modeled in CORMIX

Details, including information about nearby hotels and the Max Airport Red Line Train and Streetcar to downtown/PSU, are available in the workshop brochure.

* PSU/MixZon CORMIX Workshop June 17th - 18th, 2013 CLICK HERE (PDF)

-Register online OR
-Please complete and fax your registration form to 503-296-2354.

Portland State University (PSU) (Map)
1930 S.W. 4th Avenue
Room: EB310; "Grid Location 10H (Engineering Bldg)" on the (Campus Map)
Portland, OR 97201 USA
June 17th & 18th 2013; 8:00AM to 5:00PM (PDT)

The 2-day workshop registration and tuition fee1 is USD $1199.00 and includes instructional notebook and all workshop materials. 

1COURSE registration & tuition is non-refundable however substitutions are encouraged.
CORMIX software licenses for use outside the course must be purchased separately.

Monday, July 16, 2012

3rd International Symposium on Shallow Flows

The 3rd International Symposium on Shallow Flows will be held at the Iowa Institute of Hydraulic Research at the University of Iowa June 4-16 2012. 

A special session honoring the life and work of the late Professor Gerhard H. Jirka will include a paper on Site Scale Remote Sensing of Mixing Zones.

Friday, May 4, 2012

Offshore Oil and Gas - NPDES Draft General Permit

USPEA issued the NPDES 2012 Draft General Permit recently. 

The permit is for discharges from the offshore subcategory of the Oil and Gas Extraction Point Source Category for the Western Portion of the Outer Continental Shelf of the Gulf of Mexico (GMG290000) .

The draft permit is available in PDF format at 

The permit requires the use of CORMIX to model worst case critical dilution concentration (CDC) conditions for produced water discharges from offshore oil and gas drilling operations.

CorPlot - sediment bottom deposition contours
from a simulation study of drilling muds and cuttings discharge

CORMIX can model and predict the fate and effects of produced water discharges from offshore oil and gas drilling operations. The model can provide water column suspended sediment and tracer concentrations in addition to dimensions of the resultant disposal plume.

Additionally, CORMIX can be used to model drill cuttings and muds discharges from offshore operations. 

The model can be used to model bottom sediment deposition over time varying ambient current conditions.  

Thursday, May 3, 2012

Marine Outfalls

Here is a nice non-technical Wikipedia entry for Marine Outfalls - 

Schematic diagram of a harbor outfall  system
Of course outfalls can also discharge into rivers, lakes, and estuaries, however this a good summation about general characterisitcs and issues associated with wastewater disposal.


Wednesday, May 2, 2012

Mixing Zones

Regulatory Mixing Zone
A regulatory mixing zone is defined as an "allocated impact zone" where numeric water quality criteria may be exceeded as long as acutely toxic conditions are prevented.

A regulatory mixing zone can be thought of as a limited area or volume where the initial dilution of a discharge occurs.

Water quality criteria apply at the boundary of the (regulatory) mixing zone, not within the mixing zone itself.