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Project No.: 0172.09.038.070 Page 1 of 2

Project Name: Shale Gas CBI?

Yes

No

TELEPHONE CALL RECORD

Incoming

Outgoing

Date: 9/26/11 Time: 3:20 am

pm

Company Name: Intevras & Layne Water Technologies ERG Staff Name: Brent Ruminski

Contact Name: Andy Adams Contact Phone Number: 817-676-8227

General Subject: Intevras EVRAS Evaporation Technology

TOPICS DISCUSSED AND ACTION TAKEN

I called Andy Adams from Layne Water Technologies at 3:20 PM on 9/26/11. Andy answered and was willing 

to share as much information as he was able to, but at a different time. We made a tentative appointment to 

speak on the phone tomorrow morning. He asked that I send him an email to waadams@laynewater.com with 

my contact information and he would be in touch tomorrow.

Andy Adams called me back on 9/27/11 at 12:30. He provided me with the following information. 

General: The general operation of the EVRAS evaporation technology involves using heat to raise the energy 

of (heat) the oil. Heat sources include waste heat (i.e., compressors, exhaust) or gas burners, if no waste heat is 

available. The heated oil is circulated into a heat exchanger, where it transfers heat to the influent wastewater. 

The warm wastewater is routed to the top of the evaporation column and it either evaporates or falls back down 

to a pit. From there, it either crystallizes or exits as a concentrate stream. 

Location: The EVRAS evaporation technology is generally deployed to reduce wastewater volumes that would 

otherwise be injected for disposal. Installations of the EVRAS system are nationwide. The EVRAS application 

in the Marcellus shale was specifically mentioned. 

Mobility: The unit can be skid mounted and requires two separate trailers to be mobilized. Andy indicated that 

operators have trucked or piped water to an EVRAS unit if their waste heat source is not located directly on site, 

but operators try not to use centrally located treatment. Andy commented that, if the operator requests, the 

EVRAS can be designed as a centrally-located permanent structure that is capable of handling a higher capacity 

of wastewater than a typical EVRAS unit. 

Operation: The unit operates at about 200 bpd in winter and 450 bpd in summer due to ambient temperatures. 

The only limitation of feed wastewater quality is iron because it is an oxidizer. Andy did not have data for

specific upper limits of iron concentrations. 

Energy Usage: If the unit is utilizing waste heat, the only energy usage is for pumps and fans which totals to 30 

kW per day at average operation of 300-350 bpd. Andy did not report energy consumption totals if waste heat 

is not available. 

Andy said he would respond via email with some more detailed documents that provide costs, energy usage, 

and data from the field.

At 2:50 Andy Adams called me back. Andy said he would be sending a drop box with information on EVRAS 

as well as other technologies that Intervas offers. He also started talking about the oil and gas industry in 

general. He described a hypothetical situation where he has worked with two different well operators in the 
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same general region. When Andy asked the well operators what the reuse criteria for the treated wastewater 

was, Andy indicated that the two operators give significantly different ranges. Andy approximated that the TDS 

concentration criteria for reuse was 20,000 to 30,000 mg/L for some operators, but other operators may only use 

freshwater.