2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
www.geotechenv.com
…a world leader in environmental technology, manufacturing and product training since 1978.
Geotech Corporate Headquarters
Denver, Colorado USA
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Florida
Texas
Michigan Vermont
North Carolina
In addition to corporate headquarters and its European office in Barcelona, Spain, Geotech operates 5 service centers in the United States.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
an environmental industry products leader since 1978
partners with federal, state, local and international government agencies
over 10,000 private sector clients worldwide
provides products and product training to colleges, universitiesand technical schools around the globe
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Geotechenvironmental equipment
Remediation Equipment
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Environmental Remediation Equipment
• Geotech offers Environmental Remediation Equipment for the 3 main types of contaminants:– Free Phase– Dissolved Phase– Vapor Phase
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Vapor Phase TreatmentGeotech Field Days Presentation
• Soil Vapor Extraction Systems• Air Sparge Systems• Carbon Vessels• Thermal & Catalytic Oxidation
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
What is Soil Vapor Extraction ?Soil Vapor Extraction (SVE) extracts contaminants for the subsurface soil in a vapor form. Therefore , SVE systems are designed to remove contaminants that have a tendency to volatilize or evaporate easily such as volatile organic compounds (VOC’s) and some semi-volatile organic compounds ( SVOC’s) beneath the ground surface in the unsaturated zone IE: Vadose zone. By applying a vacuum through a series of underground wells, contaminants are pulled to the surface as vapor or gas.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Soil Vapor ExtractionApplicability
The target contaminants group for in situ SVE are VOC’s and some fuels. The technology is typically applicable only to volatile compounds with a Henry’s law constant greater than 0.01 or a vapor pressure greater than 0.5 mm Hg ( 0.02 inches Hg) Other factors, such as moisture content, organic content, and air permeability of the soil, will affect the SVE’s effectiveness. In situ SVE will not remove heavy oils, metals, PCB’s, or dioxins.
Because the process involves a continuous flow of air through the soil, however, it often promotes the in situ biodegradation of low- volatility organic compounds that may be present.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Soil Vapor ExtractionLimitations
Factors that may limit the applicability and effectiveness of the process include:• Soil that has high percentage of fines and a high degree
of saturation will require higher vacuums ( $$$$$) and / or hinder on the system the operation
• Large screen intervals are required in extraction wells with highly variable permeability's or stratification, which otherwise may result in uneven delivery of gas flow from contaminated regions.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Soil Vapor ExtractionLimitations (continued)
• Soil that has high organic content or is extremely dry has a high sorption capacity for VOC’s, which reduce removal rates.
• SVE is note effective in the saturated zone; however, lowering the water table can expose more of the contaminated zone to the SVE ( LNAPLS)
• Exhaust air from the in situ SVE system may require treatment ($$$$)
• Residual liquids may require treatment or disposal( $$$$)
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Soil Vapor ExtractionData Needs
• Depth and areal extent of contamination • Concentration of contaminants• Depth to Water Table• Soil Type and Properties e.g., structure, texture,
permeability, moisture content• Pilot Study: To determine radius of influence, flow
rate, optimal vacuum and contaminant mass removal rates
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
First Thing -Establish CFMWhat are you measuring?
• CFM is a CFM .. Or is it ?
• SCFM, ACFM, ICFM… What does it mean ?
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
SCFMDefinition of SCFM– the term SCFM stands for Standard Cubic Feet Per Minute. It is referenced to a pre-specified atmospheric pressure, temperature, and relative humidity.
SCFM is referenced to 14.7 PSIA, 68 degrees F, and 0% relative humidity.
By specifying these parameters, the mass flow of compressed air and gas is clearly defined.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
ACFM Definition of ACFM– the term ACFM stands for Actual Cubic Feet Per Minute.
The ACFM is dependent on actual site conditions: PSIA, temperature, relative humidity.
By specifying these parameters, the mass flow of compressed air and gas is defined on actual site conditions.
The larger the difference between site conditions and SCF conditions, the larger the difference between SCF and ACF.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
ICFM Definition of ICFM– the term ICFM stands for Inlet Cubic Feet Per Minute.
The ICFM is dependent on the amount of air flow that enter in through the air filter on the equipment
Vacuum blowers / Pressure Blower manufacturer usually rated at SCFM conditions ….. BUT WHEN ARE YOU REALLY AT THOSE CONDITIONS ??
QUESTION: When you are measuring CFM, are you correcting for the location conditions or are you assuming it is SCFM because the meters says it reads in SCFM ?
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
BAROMETRIC PRESSURE vs. ALTITUDE
FEET PSIA IN HG0 (sea level) 14.70 29.921000 14.16 28.862000 13.66 27.823000 13.16 26.814000 12.68 25.855000 12.22 24.896000 11.77 23.987000 11.33 23.098000 10.91 22.229000 10.50 21.3810000 10.10 20.58
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Soil Vapor ExtractionSeveral blower options available depending on flow and vacuum requirements….including Centrifugal Fans, Regenerative, Rotary Lobe IE: Positive Displacement, Rotary Vane, Rotary Claw, Liquid Ring (Dual Phase – Multi-Phase Extraction {MPE} )
CONFIGURATIONS AVAILABLE• Compact skid mounted designs• Trailer Mounted and Enclosures available• Complete systems including knockout drums, effluent pumps,
temperature and vacuum switches, and controls
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Soil Vapor Extraction “Rule of Thumb” Blower Sizing Application
Blower CFM INHGGEquipment Flow Range Vacuum Range
Centrifugal Fan 400-1500 1-3 Regenerative 20- 300 2-7Rotary Lobe 50- 1000 5-15Rotary Vane 5- 50 5- 28Rotary Claw 30- 1000 5- 28Liquid Ring20- 1000 15- 28
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Centrifugal FanVacuum Application
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Regenerative SVE in enclosure
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Rotary Lobe Vacuum Application
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Rotary VaneVacuum application
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Rotary Claw SVE Skid
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Liquid Ring SystemVacuum Application for Multi- Phase
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
What is Air Sparging?
Since SVE cannot remove contaminants in the saturated zone that lies below the water table, Air Sparging technology pushes air into the saturated zone to help flush (bubble) the contaminants up into the unsaturated zone where the SVE extraction wells can remove them.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Air SpargingApplicability & Limitations
For Air Sparging to be successful, the soil in the saturated zone must be loose enough to allow injected air to readily escape up into the unsaturated zone. Sites where coarse grained soil, sand, gravel are good candidates. Tight clays and poor permeable soil only inhibit the effectiveness of this technology. You can spend a lot of money on electricity and accomplish very little when the soil are not conducive for Air Sparging technology.
As with SVE, the added benefit of Air Sparging is that it provides an oxygen source which helps stimulate aerobic biodegradation.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Before you can size an Air Sparge Blower – Do a pilot test
• As with the SVE pilot, you will need to know just how much air flow and PSIG will be required to push the air into the formation.
• Also when incorporating the technology with an SVE system how much is enough ? Too much ?
• Rule of thumb: size the Air Sparge unit air flow at 1/3rd to 1/5th of the SVE system air flow. You will want to be able to capture the vapors and not allow for off-site migration.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Air Sparge BlowersSeveral blower options available depending on flow and pressure requirements
Configurations Available• Compact skid mounted designs• Trailer Mounted and Enclosures available• Complete systems to work in conjunction with an
SVE System
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Air Sparge “Rule of Thumb” Blower Sizing Application
Blower CFM PSIG Equipment Flow Range Pressure Range
Regenerative 20- 300 < 4Rotary Lobe 50- 1000 1-15Rotary Vane 5- 50 1- 20Rotary Claw 50- 350 5- 30Rotary Screw 20- 200 +30- 150
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Regenerative
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Rotary Lobe
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Rotary Vane
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Rotary Vane(Dual System)
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Rotary ClawPressure Application
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Rotary Screw
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Liquid Phase Carbon Vessels
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Carbon Treatment
• Liquid Phase vessels• 100 lb up to 20000 lb vessels available• Reactivated carbon, virgin carbon, coconut
shell media and other types of media available depending on your application
• Low pressure and high pressure units• 50 lb bags for media replacement available
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Vapor Phase Carbon Vessels
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Carbon Treatment
• Vapor Phase vessels• 100 lb up to 20000 lb vessels available• Reactivated carbon, virgin carbon, coconut
shell media and other types of media available depending on your application
• Low pressure and high pressure units• 50 lb bags for media replacement available
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Environmental Control Panel
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Geotech Environmental Control Panel • NEMA 4X Enclosure• Bright 16 x 2 character vacuum fluorescent display that shows probe and pump
status, Easily viewed day or night• A four button key pad to change menu and status display• Hand/Off/Auto switches• Base unit capable of controlling up to (8) motors/devices from (24) intrinsically safe
inputs• Expandable to accommodate up to (32) additional outputs and (96) additional inputs• Operates on single phase power, 115V or 230V• Options include: Pre-wired receptacles for probe connections, on/off timers, alarm
lights, hour meters, autodialer and others• Panel can be fully customized to meet specific site requirements
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Summary
• Get proper data• Choose right blower for your application• Geotech can help in the discussion • Let’s get coffee
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
Many companies can provide the
equipmentto keep these industries within
environmentally acceptable standards
… but Geotech provides more than that.
2650 East 40th Avenue • Denver, Colorado 80205 • www.geotechenv.com
GROUND WATER SAMPLING • WATER LEVEL & PRESSURE • WATER SAMPLE FILTRATION • GROUND WATER REMEDIATION • GEOPHYSICAL MEASUREMENTS
…your partner increating theenvironmentallysafe planetof the future!