[PLEASE NOTE: The information presented below is offered for educational purposes only. Source: U.S. Environmental Protection Agency.]
Texas Superfund Site: Sol Lynn/Industrial Transformers
Sol Lynn/Industrial Transformers
This site is not a Federal Facility.
SOL LYNN/INDUSTRIAL TRANSFORMERS1EPA Publication Date: October 4, 2005
Sol Lynn/ Industrial Transformers
Houston, Harris County, Texas
Other Names: Industrial Transformer Site,
Industrial Transformers (Sol Lynn)
Epa Region 6
Epa Id# Txd980873327
Site ID: 0602954
Congressional Dist. 25
Fact Sheet Updated: September 20, 2005
Location:The site is located at 1403, 1415, 1417, 1419 S. Loop 610 West in Houston, Harris
Approximately 2,100 persons live within one mile of the Site.
The greater Houston metropolitan area is one of the 10 largest cities in the
The Houston Astrodome/Astrodomain recreational facility is within ½ mile of site.
Four Houston city water wells and four private water wells which
serve more than 10,000 persons are within three miles of this site.
These wells are screened at depths exceeding 700 feet.
The site is a former wire and transformer reclamation facility
PCBs and solvents were dumped on-site over a 1-acre area during these
The site is within Texas Gulf Coastal Plain, underlain by the Chicot and
Shallow ground water is found at a depth of about 30 feet.
Wastes and Volumes
The principal pollutants at the Industrial Transformers/Sol Lynn site include trichloroethylene
(TCE) in ground water up to790 parts per million (ppm) and in soils and up to 600 ppm, and
polychlorinated biphenyls (PCBs) in soils ranging to 357 ppm.
Approximately 2,400 cubic yards of soil and 4.2 million gallons of ground water are
contaminated with site wastes; ground water contamination in the 90-foot zone has not been
Site Assessment and Ranking
Npl Listing History
Site HRS Score: 39.65
Proposed Date: 10/15/84
Final Date: 3/31/89
NPL Update: No. 2
EPA Publication Date: October 4, 20052SOL LYNN/INDUSTRIAL TRANSFORMERS
Site Map and Diagram
The Remediation Process
Metals reclamation operations (scrap metals and electrical transformers) were conducted at
the site by the owner/operator, Sol Lynn, from 1965 to 1975.
The owner/operator of a chemical supply business, Ken James of Sila-King, leased the 1415
property from Sol Lynn from 1975 until 1981.
During February through April 1989, the Potentially Responsible Party (PRP) fenced the site to
limit direct access to hazardous chemicals and subsequently removed contaminated surface
Remediation of the Ground Water began in October 1993; however, numerous leaks occurred
in the recovery well lines, compounded by other required system modifications, necessitated
that the treatment plant and the contract treatment operations be shutdown in October 1996.
Maxim Engineering & Environmental, the remediation treatment contractor, has been closed
out effective September 1996.
TCEQ issued the Notice of Award on 4/24/98 to WRS Infrastructure & Environmental in the
amount of $386,650.00 for piping replacement from recovery wells to treatment plant, includes
thirteen new monitoring wells, converting 5 existing monitoring wells to new recovery wells and
other work activities.
Ingestion of TCE from ground water poses a risk to human health.
Site soils and drainage pathways are contaminated by PCBs and TCE.
SOL LYNN/INDUSTRIAL TRANSFORMERS3EPA Publication Date: October 4, 2005
Other Environmental Risks:
The site is located within ½ mile of the Astrodome, Astroworld Amusement Park, several
industrial plants, and apartment complexes frequented by the local population and tourists.
However, there are no known exposure pathways to any potential receptors.
Record of Decision
Signed: March 25, 1988 (Source)
Amended: September 30, 1992
September 23, 1988 (Ground Water)
Amended: September 30, 2004
The initial ground water Record of Decision (ROD) selected pump-and-treat as the remedial
The Amended ground water ROD selected in-situ bioremediation with monitored natural
attenuation as the remediation technology.
The Texas Commission On Environmental Quality(TCEQ) -formerly Texas Natural Resource
Conservation Commission (TNRCC); and prior known as the Texas Water Commission (TWC)
previously served as the lead agency on implementation of this remedy. EPA is currently the
Chemical Dechlorinization was initially chosen as the Source Control remedy; a process
whereby contaminated soils are mixed with chemical reagents to remove halogenated organic
During pilot/bench testing, the technology performed well; however, upon application in the
field, the process could not be effectively implemented at the Sol Lynn site.
The Source Control remedy was thus revised in September 1992, and excavation and off-site
disposal was chosen and initiated as a final soil cleanup method for the site.
Other Remedies Considered
Reason Not Chosen
1. No ActionDoes not meet statute, does not remedy problem
2. Collection and Off-site DisposalDoes not meet SARA's preference for treatment;
Transportation is expensive
3. Deep Well InjectionDoes not meet SARA's preference for treatment
4. On-site Carbon AdsorptionTechnical feasibility questioned and Discharge
5. On-site Catalytic Dehydro-Expensive; technical feasibility questioned
chlorination and Discharge
Other Remedies Considered
Reason Not Chosen
1. No ActionDoesn't remedy problem
2. Off-site Landfill Not SARA preference (Alternate Remedy)
EPA Publication Date: October 4, 20054SOL LYNN/INDUSTRIAL TRANSFORMERS
3. Stabilization and Offsite LandfillNot SARA preference, large volume increase
4. In-Situ VitrificationQuestionable technically
5. Onsite IncinerationState objects due to close proximity to Astroworldand
6. Off-site IncinerationCost prohibitive
7. Biological TreatmentQuestionable technically
Community Involvement Plan: Developed 12/85, revised 4/89
Open houses and workshops: 1989, 4/91, 7/91
Original Proposed Plan Fact Sheet and Public Meeting: 2/88 (Source), 8/88 (Ground Water)
Original ROD Fact Sheet: 5/88 (Source), 10/88 (Ground Water)
Milestone Fact Sheets: Numerous 1988 press releases (6), 8/89, 2/90, 7/91 (PRPs), 9/92
EPA Amended Proposed Plan and Public Meeting held : 9/92
Amended ROD Fact Sheet: 12/92
Citizens on site mailing list: 104
Constituency Interest: Generally a low level of interest- air stripping and chemical
dechlorinization activities prompted numerous complaints about odors.
Site Repository: (1)Houston Central Library
Texas & Local History Division, Julia Ideson Building,
500 McKinney Street
Houston, TX 77002
(2) EPA’s Region 6
Dallas, Texas; Please call first,
Contact 1(800) 887-6063 for file viewing information and hours open
or written request through Freedom of Information Act (FOIA),
FOIA Officer, Jerva Duram:
1445 Ross Avenue, Dallas, Tx. 75202
(3) Texas Commission On Environmental Quality (TCEQ), Austin, Tx. :
Contact: Telephone (512) 239-2920 for file viewing information and hours
Mail Code 199 , Building D,
P.O. Box 13087, Austin, Texas 78711
Technical Assistance Grant
Availability Notice: 4/89
Letters of Intent Received:
1) LIFT Endowment Fund, Inc. - 2/8/90 (withdrawn)
Final Application Received: None
Grant Award: N/A
Current Status: No apparent citizen interested in applying for the grant.
RPM (EPA): Ernest R. Franke, PE; 214-665-8521; and M. Gary Miller, PE; 214-665-8318; 6SF-
State Contact: (TCEQ) Project Manager, Carol Dye, P.G., 512/239- 1504
Community Involvement: Phyllis June Hoey, CIC, 214-665-8522, 6SF-PO
Regional Public Liaison (EPA): Arnold Ondarza , 303-312-6777
SOL LYNN/INDUSTRIAL TRANSFORMERS5EPA Publication Date: October 4, 2005
Attorney (EPA): James L. Turner, 214-665-3159, 6SF-DL
State Coordinator (EPA): Karen Bond, 214-665-6682, 6SF-AP
Prime Contractor(s): Supplemental RI/FS is Tetra Tech EMI, Inc., EPA’s Contractor
Present Status and Issues
First 5-Year review was signed 11/23/99 .In November 1999 EPA’s findings were that the
ground water remedy might not be protective of public health and the environment EPA staff
were directed to initiate and undertake a Supplemental RI/FS to determine whether additional
remedial action should be implemented.
Federal Lead - RI/FS by Response Action Contract (RAC) began 12/07/99 which began site
characterization with scheduled follow-up actions to evaluate remedial alternatives.
Because of the high concentrations of the TCE contaminant in the various site aquifer wells,
conducted a supplemental Remedial Investigation and Feasibility Study (RI/FS) to characterize
the site contaminants and evaluate supplementary groundwater remedial alternatives.
The RI/FS field activities began October 30, 2000 and all field activities were complete May 18,
Characterization required 165 site monitoring wells that were sampled under RAC and
analyzed by Houston EPA Lab. Analytical results have been provided to the technical EPA
team, including Modeler, Dr. Ron Arnett, contractor for the Las Vegas, EPA Lab.
Dissolved oxygen and hydrogen sampling have been conducted to aid in the determination of
degradation rates of the chlorinated solvents(TCE) on sites.
The collection of core samples was performed from selected zones in the aquifer for bench
scale testing for degradation rates. The combination of both laboratory data and field evidence of
the geochemical environments will help determine appropriate degradation rates for the
dissolved chlorinated solvents.
A site pump test been conducted to determine hydraulic properties of the water bearing zones
which were used in the ground water modeling of the site.
Data evaluation and site modeling results was received in September 2002
Final supplemental RI, dated December 2002, submitted to site repositories.
Work plan for business air monitoring, private well plugging and new cluster monitoring wells
are due in April 2003 and upon receipt and agreement of the contractor’s work plan, notice to
proceed by a Work Assignment form were issued.
Air monitoring of seven business were complete on June 4 & 5 2003, the private contaminated
well was plugged on May 5 & 6 , 2003, and drilling, development and testing of seven cluster
wells south of the site were completed in June 2003; the data results on both air test and seven
well sampling were completed in July 2003.
RI/FS final completion date was extended to September 30, 2003 to accommodate these added
field activities and incorporate the technical laboratory data and the plume delineation limits.
Air Monitoring of Businesses for TCE contaminant has been conducted and the risk assessed
Final supplemental FS, dated October 2003, submitted to site repositories.
The amended Proposed Plan was finalized on April, 2004, Public 30 day comment period was
The Proposed Plan issued, no comments received.
Amended ROD by EPA was signed September 30, 2004 which established in-situ remediation
as the remedy.
The Second Five Year Review was signed in December 09, 2004 supporting the RI/FS and
amended ROD’s findings.
The Remedial Design Statement of Work dated April 05, 2005, has been reviewed by EPA and
its RAC’s Contractor’s has completed and submitted the revised site Schedule dated 6/27/05.
Upon approval by EPA of the work plans, the RD activities will be underway. The current RD is
scheduled for completion December 22, 2005 per submitted revised schedule.
EPA Publication Date: October 4, 20056SOL LYNN/INDUSTRIAL TRANSFORMERS
Remedial activities at the Industrial Transformers/Sol Lynn Superfund site will mitigated the
threat from site wastes for 2,100 people living and working within one mile of the site.
The Source Control remedy removed over 2,700 cubic yards of PCB/TCE-contaminated soil
which has been treated and/or removed.
In-situ treatability study of the higher TCE contaminant concentration areas in the upper three
groundwater bearing zones plumes is schedule in this RD activity schedule. Monitored Natural
Attenuation (MNA) is the remedial activity scheduled for RD/RA in the remaining groundwater
bearing zones of lower concentrated contaminant plume areas.
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