•
ADEQ Oversight of Early Response Action, West Van Buren WQARF Site,
Project Engineer. Provided oversight of design, construction, and
start-up activities at this PCE soil and groundwater contaminated
site, on behalf of ADEQ, involving SVE, air sparge, and groundwater
pump and treat systems. Certified the construction of the systems
for ADEQ.
• Remedial Pilot Study, Wellton, Arizona, Rail Yard UST Site,
Project Engineer/Manager. Planned and conducted field pilot tests
of pulsed air sparging with sparged air recovery by soil vapor extraction
at this gasoline UST site. The test results were used in the design
of site-wide systems involving this ground-water remediation technology.
• Remedial Pilot Study, Phoenix, Arizona, ADEQ UST Site (Gas
N Lube Facility), Project Engineer/Manager. Planned and conducted
field pilot tests of pulsed air sparging with sparged air recovery
by soil vapor extraction at this gasoline UST site. The test results
were used in the design of site-wide remedial systems as included
in a corrective action plan.
• Remedial Pilot Study, Tracy, California, Rail Yard Site,
Project Engineer. Assisted in the planning and performance of field
pilot tests of soil vapor extraction, pulsed air sparging with/without
ozone injection, and dual-phase extraction at this chlorinated hydrocarbon-affected
site.
• Remedial Pilot Studies, Rimrock, Arizona, ADEQ UST Site
(Beaver Hollow and McGuireville Mini-Marts), Project Engineer. Planned
and conducted field pilot tests of pulsed air sparging/injection
and soil vapor extraction at these gasoline UST sites. The test
results were used in the design of site-wide remedial systems.
• Remedial Pilot Study, Chandler, Arizona, ADEQ UST Site (Village
Center), Project Engineer/Manager. Mr. Dowler planned and conducted
field pilot tests of air sparging, in-well air stripping, and soil
vapor extraction at this gasoline UST site. The test results favored
the application of in-well air stripping, rather than air sparging,
for removal of dissolved gasoline from groundwater.
• Remedial Performance Investigation, Perryville, Arizona,
ADOC UST Site, Project Engineer. Conducted a subsurface investigation
of an ongoing soil remediation effort by soil vapor extraction to
improve soil gas sweep efficiency and VOC recovery rates at this
gasoline UST site. He then operated and maintained the system under
these improved conditions until achieving soil remedial goals.
• Remedial Pilot Study, Wenden, Arizona, ADEQ UST Site (Wenden
Shell), Project Engineer/Manager. Planned and conducted a 60-day
field pilot test of pulsed air sparging and soil vapor extraction
technologies at this gasoline UST site. The favorable test results
led to the expanded design and implementation of these remedial
processes.
• Remedial Pilot Study, Coolidge, Arizona, ADOA RMS UST Site
(DES Motor Pool Facility), Project Engineer. Planned and conducted
field pilot tests of pulsed air injection and soil vapor extraction
technologies at this gasoline UST site. The test results were utilized
in a feasibility study as part of a corrective action plan for this
site.
• Remedial Planning and Design, Phoenix, Arizona, ADEQ UST
Site (Gas N Lube Facility), Project Engineer/ Manager. Managed and
prepared the remedial design and corrective action plan for this
gasoline UST site, featuring pulsed air sparging with sparged air
recovery by soil vapor extraction as the selected ground-water and
soil remedy.
• Remedial Planning, San Simon, Arizona, Rail Yard UST Site,
Project Engineer. Prepared the corrective action plan for this Bunker
"C" UST site.
• Remedial Planning, Coolidge, Arizona, ADOA RMS UST Site
(DES Motor Pool Facility), Project Engineer. Prepared the corrective
action plan for this site, featuring pulsed air injection and soil
vapor extraction as the selected groundwater and soil remedy.
• Remedial Planning, Design, and Operation; Tempe, Arizona,
Confidential Client, Project Engineer. Prepared the remedial design
and corrective action plan for this gasoline UST site, featuring
soil remediation by soil vapor extraction with VOC destruction by
thermal/ catalytic oxidation. He was also responsible for remedial
operation and performance over a 12-month period and the preparation
of quarterly ground-water monitoring and remedial progress reports.
• Remedial Planning, Design, and Operation; Wellton, Arizona,
Rail Yard UST Site, Project Engineer/Manager. Mr. Dowler prepared
the remedial design and corrective action plan for this gasoline
UST site, featuring pulsed air sparging with sparged air recovery
by soil vapor extraction as the selected soil and ground-water remedies.
He also managed the installation of the remedial systems, conducted
the remedial performance testing of air sparge points, and initiated
remedial operations. Prepared the quarterly ground-water monitoring
and remedial progress reports for this site.
• Remedial Design, Installation, and Operation; Chandler,
Arizona, ADEQ UST Site (Village Center Properties), Project Engineer/Manager.
Utilized existing remedial pilot test wells in the development of
an in-well air stripping and soil vapor extraction process design
for this gasoline UST site. Developed a model of the air stripping
process using a nodal approach, resulting in a predicted radius
of groundwater vertical circulation of 100 feet from the in-well
air stripping well. Installed, performance tested, and operated
the remedial systems. After quickly remediating the affected groundwater,
the air injection system was utilized to inject ambient air into
the vadose zone, in combination with soil vapor extraction, to accelerate
the removal of gasoline from affected soil. The site was deemed
adequately remediated by ADEQ after nine months of remedial operations.
• Remedial Installation, Operation, and Closure; Phoenix,
Arizona, ADEQ UST Site (Gas N Lube), Project Engineer/Manager. In
accordance with the corrective action plan, installed, performance
tested, operated, and maintained the remedial systems for this gasoline
UST site, consisting of pulsed air sparging with sparged air recovery
by soil vapor extraction. After the first 18 months of operation,
developed and applied an enhancement of the pulsed air sparging
process, consisting of the slug-treatment of air sparge wells with
a surfactant solution to enhance the mobility of the sparged air
within the saturated zone. After six months of surfactant-enhanced
air sparging, remedial goals were reached. Subsequently managed
the closure of remedial actions, including remediation well abandonment.
• Remedial Design, Installation, and Operation; Wenden, Arizona,
ADEQ UST Site (Wenden Shell), Project Engineer/Manager. Prepared
the expanded remedial design for this gasoline UST site, featuring
pulsed air sparging with sparged air recovery by soil vapor extraction.
Managed the installation of the remedial systems, conducted the
remedial performance testing of air sparge points, and maintained
remedial operations for seven months until achieving the remedial
goals. Applied surfactant-enhanced air sparging process, resulting
in the acceleration of remedial progress.
• Remedial Design, Installation, and Operation; Rimrock, Arizona,
ADEQ UST Sites (Beaver Hollow and McGuireville Mini-Marts), Project
Engineer. Prepared remedial designs for both sites, featuring pulsed
air sparging/injection and soil vapor extraction processes. Managed
the construction of the remedial systems and conducted initial performance
tests of remediation wells, followed by operation, monitoring, and
maintenance of the systems.
• Remedial Design, Atlanta, Georgia, Confidential Client,
Design Engineer. Designed the groundwater and soil treatment processes
at a former laundry facility where chlorinated organic compounds
and gasoline had been released. Prepared the POTW permit application
for discharge of treated ground water to the sanitary sewer.
• Remedial Operation and Closure, Perryville, Arizona, ADOC
UST Site, Project Engineer. Maintained soil remedial operations
at this UST site, involving soil vapor extraction with VOC destruction
by thermal/catalytic oxidation. Managed the subsequent closure investigation
and prepared a request for letter of completion to the ADEQ for
site closure. Because of MTBE being present within the groundwater,
the ADEQ will not yet grant site closure for groundwater. Accordingly,
Mr. Dowler has advised the client to proceed with a final site closure
approach of natural attenuation with monitoring of groundwater for
MTBE. He is currently implementing this approach.
• Remedial Operation, Yuma, Arizona, Rail Yard UST Site, Project
Engineer. Responsible for soil remedial operations involving soil
vapor extraction with VOC destruction by thermal/catalytic oxidation.
Prepared the quarterly ground-water monitoring and remedial progress
reports for this site.
• Remedial Operation, Florence, Arizona, ADOC UST Site, Project
Engineer. Provided technical support of biocell operational performance
at this gasoline UST site. The biocell consisted of gasoline-affected
soil from the UST excavation and an active air infiltration system
to augment the aerobic biodegradation process.
• ADEQ SAF Application, Yuma, Arizona, Rail Yard UST Site,
Project Engineer. Prepared a work plan for continued groundwater
monitoring at this multiple release site (diesel and gasoline).
Prepared a cost allocation document for State Assurance Fund (SAF)
application processing.
• Trial Burn Test Support, Clive, Utah, USPCI/LaidIaw, Design
Engineer. Designed, procured, and commissioned two, metals solutions
injection systems for trial burn testing.
• Liability Support, Confidential Client, Engineering Consultant.
Prepared technical opinions and a remedial cost estimate breakdown
for defense of client liability relative to their previous landfilling
of burner soot.
• CERCLA Site Ground-Water Remedial Design, Houston, Texas,
Crystal Chemical, Design Engineer. Prepared the preliminary engineering
design of a ferric coprecipitation process for removal of arsenic
compounds from ground water at a former pesticides manufacturing
site.
• Waste Management, Arkansas City, Kansas, Total Petroleum,
Environmental Compliance Manager. Managed the disposal of solid
wastes and provided environmental compliance oversight during refinery
closure activities.
• Nextel Cellular Tower Sites in Texas, Oklahoma, Missouri,
Kansas, Illinois. Provided project management and document reviews
for the preparation of 144 ESAs and 72 NEPA screens.
• EPA Title V Permitting, Casa Grande, Arizona, Hexcel Corporation,
Air Quality Engineer. Prepared the Title V permit application and
draft Title V permit under the Clean Air Act Amendments of 1990
for this honeycomb products manufacturer.
• EPA Title V Status, Phoenix, Arizona, Universal Propulsions,
Air Quality Engineer. Prepared an air emissions inventory and determined
the Title V status under the Clean Air Act Amendments of 1990 for
this rocket motor manufacturer.
• Air Permitting, Tempe, Arizona, Confidential Client, Air
Quality Engineer. Prepared a Maricopa County air quality permit
application for a portable, soil vapor extraction and thermal/catalytic
oxidation system for initial use at a gasoline UST site.
• Air Quality Control, Phoenix, Arizona, Confidential Client,
Air Quality Engineer. Provided troubleshooting assistance relative
to the scrubbing of formaldehyde from a process air stream using
a bleach solution. Planned and documented a performance test of
the air scrubber.
• Air Emissions Testing, Arizona, Various Clients, Air Quality
Engineer. Conducts performance tests of soil vapor extraction and
thermal/catalytic oxidation systems at UST sites.
• Air Quality Control Research, Chandler, Arizona, Confidential
Client, Air Quality Engineer. Prepared an engineering research document
for the control of carbon monoxide and unburned hydrocarbon emissions
from the production testing of small engines. The research was conducted
as a preemptive activity relative to possible, future air quality
control requirements under the Clean Air Act Amendments of 1990.
• ICF Kaiser Engineers (International), Pittsburgh, Pennsylvania
As a chemical process design engineer, was responsible for process
design and performance in support of construction engineering design
work involving the civil, mechanical, and electrical engineering
disciplines.As an engineering consultant, conducted technical reviews
of engineering documents pertaining to waste-to-energy applications,
including dioxin/furan control within municipal solid waste incineration
facilities and rotary kiln slagging of spent aluminum pot liner
material.
• Air Quality Control, Bethlehem, Pennsylvania, Bethlehem
Steel Corporation, Air Quality Engineering Consultant. Provided
investigative services at three coal chemical plants to determine
which operations were affected by the EPA NESHAP regulations for
benzene emissions control, including the preparation of necessary
source reports and requests for (two year) waiver of compliance.
• Preliminary Engineering Studies, Bethlehem, Pennsylvania,
Bethlehem Steel Corporation, Project/Process Engineer. Prepared
preliminary engineering study reports for three coal chemical plants
relative to achieving cost effective compliance with the EPA NESHAP
regulations for benzene emissions control. Study reports consisted
of regulatory compliance requirements, a definitive scope of work
necessary to achieve compliance, process flow schematics, an appropriation
grade cost estimate, and construction block diagram. Benzene emission
controls consisted of vapor recovery systems and/or gas blanketing
systems as applied to process vessels, storage tanks, and process
sumps that typically required replacement or modification to enable
enclosure and emissions control. Accordingly, Mr. Dowler's preliminary
engineering designs also included various means to implement the
controls without adversely affecting plant operations. As potential
alternatives to vapor recovery, Mr. Dowler investigated activated
carbon adsorption, thermal oxidation, and vapor pressure balancing
for the control of benzene emissions.EPA
• NESHAP Benzene Emissions Control, Bethlehem, Pennsylvania,
Bethlehem Steel Corporation, Chemical Process Design Engineer. Simultaneously
designed various process modifications to three coal chemical plants
(Bethlehem, Pennsylvania; Lackawanna, New York; and Burns Harbor,
Indiana) to achieve efficient compliance with the EPA NESHAP regulations
for benzene emissions control. Process modifications typically applied
to the flushing liquor decanter areas, weak ammonia liquor storage
areas, tar collection and storage facilities, light oil scrubbing
and recovery areas, light oil storage and loading facilities, and
final cooler processes. In addition to preparing the operating manuals,
Mr. Dowler provided start-up assistance and operator training.
• Designed two, enclosed, final coke oven gas cooler processes
to replace existing, open processes that were designated by the
EPA to be the greatest emitters of benzene in the U.S.A. Benzene
emissions were successfully eliminated to achieve EPA NESHAP compliance
while maintaining ease of final gas cooler process operation.
• As an EPA NESHAP benzene emission controls application,
conceptualized a means of safely regulating vapor space pressures
within coal chemical plant process vessels, storage tanks, and process
sumps while recovering vapors to the vacuum side of the coke oven
gas train. The pressure regulating device is hydrostatically actuated,
and features no moving parts or instrument controls. Six applications
are in successful operation from the standpoint of preventing potential
implosions and explosions inherent with alternative pressure control
valves.
• Minimized a hazardous waste stream within a coal chemical
plant process requiring EPA NESHAP benzene emission controls. The
waste stream consisted of absorption oil containing polycyclic (solid)
compounds, benzene, naphthalene, tar, and process water. Mr. Dowler's
modification to the affected process enabled a reduction in adsorption
oil make-up rate to the process from 6,000 gallons/week to 1,000
gallons/month. This corresponded to a decrease in make-up costs
of $540,000/year at $1.80/gallon. (This savings in operating costs
established a means of paying back the cost of EPA NESHAP compliance.)
• Coal Chemical Plant Upgrade, Peoples Republic of China,
Confidential Client, Design Engineer. Assisted in the construction
engineering design of a phosam ammonia recovery plant for a coal
chemical plant. Mr. Dowler's services consisted of the compilation
of all U.S. standards and codes, the preparation of procurement
specifications for process equipment, and the review of vendor submittals.
• EPA NESHAP Benzene Emissions Control, Clairton, Pennsylvania,
Aristech Chemical, Process/Project Engineer/Manager. Managed and
provided the process engineering design of a decant water containment
system and segregated storm water collection system for a benzene
storage facility within a coal chemical refining plant. He also
managed the preparation of a preliminary engineering study report
for the design of a new topped tar distillation facility.
• Waste Incineration, Taiwan, Confidential Client, Process
Design Engineer. Prepared the process engineering design of a 30,000,000
BTU/hour, industrial waste incineration facility for the Republic
of China EPA in Taiwan. The incineration facility consisted of a
solids preparation and feed system, rotary kiln with ram feeder,
transition chamber with wet ash conveyor, secondary combustion chamber,
evaporative quench, air preheater, semi-dry scrubber with lime slaking
system, induced draft fan, adiabatic quench, packed bed absorber
with caustic feed system, and stack.
• Secondary Sewage Sludge Pyrolysis, Pittsburgh, Pennsylvania,
Confidential Client, Research Engineer. Conducted small scale tests
of municipal secondary sewage sludge pyrolysis to determine yields
and composition of pyrolytic oil and gas, and the extent of sludge
conversion. This application is very similar to the coking of coal
and recovery of coal chemicals, of which, Mr. Dowler is familiar
with.
• BHP Petroleum / Monsanto Oil Company, Midland, Texas. As
a senior petroleum engineer for a large independent oil producer,
originated, planned, and executed various crude oil recovery projects
within the Permian Basin of west Texas and New Mexico, including
development and infill drilling programs, production and waterflood
facilities, well workovers to improve oil recovery, an enhanced
oil recovery application, and expense reduction measures. His responsibilities
included budget preparation, reserve and prospect analysis, well
planning and design, preparation of authorizations for expenditure
with economic justifications, and development of field procedures.
Mr. Dowler's services were recognized in 1983 after increasing operating
revenues by $4,100,000 and establishing 980,000 barrels of net oil
reserves from a mature, producing property.
• Mr. Dowler established a diagnostic evaluation program for
regional, beam pumped oil wells to improve pumping efficiencies
and decrease mechanical failures. This program, as applied to eighty
wells, reduced operating/maintenance expenses by $400,000 during
the first year.
• Redesigned the standard downhole pumping assembly within
beam pumped wells to minimize the growth of sulfate reducing bacteria,
the formation of hydrogen sulfide gas, and the rate of downhole
corrosion. Upgraded the field procedure for installation of rod
strings within beam pumped wells. Maintenance expenses associated
with improper rod string installation and subsequent failure decreased
by $175,000/yr for eight wells.
• Testified before a state regulatory agency to secure permits
for downhole commingling of production from multiple reservoirs.
• Provided process technical support at the world's largest
integrated Nylon 66 chemical intermediates plant. His area of responsibility
included free-flowing adipic acid storage, box and railcar loading,
and railcar heel unloading facilities. Solved an existing quality
control problem relative to the loading of product into heavy duty
boxes. He modified the box loading facility to load polyethylene
bulk bags fitted with plastic liners. This modification enabled
a $6,000,000/yr increase in sales by meeting a zero foreign particle
requirement.
PROFESSIONAL
AFFILIATIONS:
Expertise