WI0501030_Other Correspondence_20190815

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tersus
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Tersus Environmental, LLC
Products and Technical Support
for Soil and Groundwater Remediation
919.453.5577 • www.tersusenv.com
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USDA
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Electron Donor Solution — Extended Release PRODUCT
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EDS-ER TM
EDS-ER + Water = EVO
EDS-ERTM Generates a
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• Long-lasting carbon and hydrogen source
• Simple, safe, low-cost bioremediation solution
• Neutral pH when mixed with water
• Controlled release of electrons for up to 5 years
• Clean, non -disruptive application
Principle: A Self -Emulsifying Electron Donor
Released in 2011, EDS-ERTM was the first water -mixable vegetable oil based
organic substrate to provide a lasting source of carbon and hydrogen for enhanced
reductive dechlorination and other bioremediation processes. EDS-ERTM is
shipped as a 100% fermentable substrate concentrate to create the right aquifer
conditions for anaerobic remediation. EDS-ERTM contains refined, bleached, and
deodorized soybean oil and surfactants. The main role of the surfactant is to
sufficiently reduce the energy (yolw) required to increase the surface area so that
spontaneous dispersion of oil droplets occurs, and the system is
thermodynamically stable. When mixed with water, EDS-ERTM spontaneously
becomes an emulsified vegetable oil (EVO).
Advantages
• Easily mixes with water, simplifying field operations
• Spontaneously forms a high -quality, low -droplet size oil -in -water emulsion that
easily and uniformly disperses in the aquifer
• 100% fermentable and contains no water
• A slowly fermenting product than can provide electrons for up to five years
• Contains refined, bleached, and deodorized (RBD) food -grade soybean oil
• Preservative free
• Long shelf life
• Lower transportation costs when compared to other EVO products
• Up to 50% less packaging material required
• Lower carbon footprint
• USDA Certified Biobased Product
• Can be injected into existing wells or via direct push
• Decreases number of necessary injection points for low permeability structures
Field Application Design
EDS-ERTM applications are easily tailored to meet site -specific conditions. Typical
configurations include grid and barrier patterns and applications in excavations or
trenches. The product's low viscosity allows subsurface distribution through direct -
push injection points, hollow -stem augers, or pumped -through existing wells.
Copyright ©2018 Tersus Environmental, LLC. All Rights Reserved. tersusenv.com • tersusenv.fr • tersusenv.es
Rev: 5/7/2019
919.453.5577 • [e-mail]

Uniform distribution of an electron donor is the key to successfully enhancing anaerobic bioremediation. Once mixed with
water, EDS-ERTM remains emulsified, even at low concentrations. The diluted emulsion has a viscosity almost equal to
that of water. We therefore suggest injecting a relatively dilute emulsion in a single step, as the oil droplets move with the
injected water. The oil droplets may remain suspended in the water for a few days to a few weeks after injection until it
absorbs into soil surfaces to act as a long-term source of electron donor.
EDS-ERTM can be diluted on site by adding the desired amount of product to a mixing tank and then simply adding water.
Product Content
Chemical Name
Soybean oil
Surfactant Mixture
Product Characteristics
CAS Number
8001-22-7
Proprietary
Parameter
Specification
Specific Gravity
0.92-0.925
Solubility in water
miscible
Flash Point
Greater than 550 °F (288 °C)
Appearance
yellowish translucid oil
Packaging Options
• 55-gallon poly drums
• 275-gallon IBC containers
• 5,000-gallon tankers
Safety
Composition (% wt.)
85 - 95
5-15
The use of body protection appropriate to task being performed is always suggested when handling chemicals. Wear
impervious gloves for prolonged or repeated exposure as appropriate to task. If necessary, refer to U.S. OSHA 29 CFR
1910.138, the European Standard DIN EN 374, the appropriate Standards of Canada or other relevant standards.
Copyright © 2018 Tersus Environmental, LLC. All Rights Reserved. tersusenv.com • tersusenv.fr • tersusenv.es
Rev: 5/7/2019
919.453.5577 • [e-mail]

EDS-ERTM'
Electron Donor Solution
Long-lasting Electron Donor
As delivered, the physical state of EDS-ERTM (electron donor
different than standard emulsified vegetable oil (EVO) prod
emulsions containing water, EDS-ERTM is a water -mixable oil;
ERTM are about 50% less than conventional products.
At room temperature, EDS-ERTM is a liquid material with
vegetable oil. Unlike common EVO products, EDS-ERTM will
years without spoilage.
Features & Benefits
• 100% fermentable and contains no water
• Because the product is completely water
mixable, the number injection points for low
permeability structures decreases
• Easily mixes with water, simplifying field
operations
• Controlled release of electron donors for up to
five years
• Food -grade carbon source
• Low total dissolved solids to comply with
secondary water quality requirements for
amendments with low salt content
• Conforms to EPA's EPP (Environmentally
Preferable Purchasing) and USDA biobased
criteria
• Neutral pH when mixed with water
• Clean, low-cost, non -disruptive application (e.g.,
direct -push, wells and excavations)
• Lower transportation costs when compared to
other electron donors
• Over two years shelf life
• Freezing Point is -4 °F (-20 °C)
Dissolved -Phase Treatment
solution — extended release) by Tersus is significantly
ucts. Whereas other EVO products are concentrated
it contains no water. Thus, the costs for shipping EDS-
an appearance and viscosity roughly equivalent to
not separate, will not freeze, and has a shelf life of 2
Applications
EDS-ER' applications are easily tailored to meet site -
specific conditions. Typical configurations consist of
grid and barrier patterns and application in
excavations or trenches. The product's low viscosity
allows subsurface distribution through direct -push
injection points, hollow -stem augers or pumped
through existing wells.
Packaging Options
• 55-gallon poly drums
• 275-gallon totes
• Bulk tankers

--",4)
EDS-ERTh'
Electron Donor Solution
Bioaugmentation LuilturE
The complete reductive dechlorination of chlorinated ethenes
yields non -toxic ethene as a final product. Absent the right bacteria,
you could see an accumulation of vinyl chloride. Although not
necessary at every site, Tersus Environmental recommends the use
of KB-1®family of bioaugmentation cultures. Bioaugmentation
leads to more efficient use of electron donors, which means faster
bioremediation and reduced O&M requirements, thereby lowering
overall project costs. KB-1® is the most widely used family of
bioaugmentation cultures for the remediation of chlorinated
solvents.
Dissolved -Phase Treatment
Hnaerooic iv6eaia for Bioaugmentation
Effective bioaugmentation for enhanced reductive dechlorination
projects require the following geochemical conditions:
• Redox levels (ORP) below -75 mV
• Dissolved oxygen levels less than 0.2 mg/L
• pH between 6 and 8.5
Tersus provides food -grade amendments that, when added to
water, instantly create hundreds of gallons of anoxic media to
protect bioaugmentation cultures during injection. This shield
allows single mobilization for both biostimulation and
bioaugmention events. The suggested amino acids (L-Cysteine base)
dosage is between 0.05% and 0.1% at room temperature.
L-Cysteine Base