7607_GreatOakMSWLF_Final WorkPlan_LeakLocationTest_DIN26805_10042016

Environmental Consultants 2520 Whitehall Park Drive 704 504-3107 and Contractors Suite 450 FAX [phone] Charlotte, NC 28273-3557 www.scsengineers.com
Offices Nationwide
File No. 02215305.02
September 12, 2016
Rev: September 20, 2016
MEMORANDUM
TO: Ming-Tai Chao, PE
Environmental Engineer
Division of Waste Management, NCDEQ
FROM: Steven C. Lamb, PE
SCS Engineers
SUBJECT: Leak Location Work Plan
Waste Management Great Oak Landfill, Cell 1A
Permit No. 7607-MSWLF-2015
CC:John Workman, PE Waste Management
Ed Mussler, PE, NCDEQ
John Murray, PE, NCDEQ
Sharon Korleski, PE, S&ME
On behalf of Waste Management and the Great Oak Landfill, SCS Engineers is providing a
revised Work Plan and a letter response to your September 14, 2016 letter to SCS Engineers (DIN 26729). Your September 14th letter provided comments on the Leak Location Work Plan dated September 12th. Responses to your comments are provided in Attachment I and also
included in the Work Plan where appropriate.
As you are aware, SCS Engineers has been retained by Waste Management to provide
construction quality assurance (CQA) services during the construction of Cells 1A and 1B. In this role, SCS Engineers is monitoring the installation of the geosynthetics, which will now include hiring a specialty liner testing company to conduct the leak location testing. SCS
Engineers has retained the services of Leak Location Services, Inc. (LLSI).
LLSI has provided a Work Plan for the leak location testing proposed at Cell 1A. A copy of
their Work Plan and supporting documentation is provided in Attachment II.

ATTACHMENT I
Environmental Consultants 2520 Whitehall Park Drive 704 504-3107 and Contractors Suite 450 FAX [phone] Charlotte, NC 28273-3557 www.scsengineers.com

Offices Nationwide
September 22, 2016
File No. 022015305.02

Mr. Ming-Tai Chao, PE NC DEQ Division of Waste Management
1646 Mail Service Center
217 West Jones Street
Raleigh, NC 27699
Subject: Response to Comments on the Leak Location Work Plan
Great Oak Landfill, Permit No. 7607-MSWLF-2015
Randolph County, North Carolina

Dear Mr. Chao:
On behalf of Waste Management and the Great Oak Landfill, SCS Engineers, with input from
Leak Location Services, Inc. (LLSI), hereby provides responses to your comments on the Leak
Location Work Plan dated September 12, 2016. Your comments were provided in a letter to SCS Engineers dated September 14, 2016 (DIN 26729).

Your comments are provided below in italics followed by our response in bold.

1. There are many editions of ASTM D7707. To avoid any confusion, please confirm the referenced ASTM D7707 throughout the Work Plan is the edition approved on January 1, 2016 (ASTM D7007-16) and shall be used for this project. Please also append the ASTM D7007-16 to the Work Plan.

There was no mention of ASTM D7707. We believe you meant to say ASTM D7007. The
most recent approved addition of ASTM D7007 on January 1, 2016 shall be used for this project. The Work Plan was revised to reflect this comment.
2. (Section IV. Preparations and Support, Bullet Item 3) Please clarify or address the
following concerns:
i. Please define the “field capacity” of a geocomposite drainage material.

The term “field capacity” in the Work Plan was removed and replaced with “the extent of having detectable moisture throughout”.
ii. To avoid oversaturation of earthen material (standing water on top of the
protective soil cover) mentioned in the last bullet item, should there be any specification or protocol such as an in-place testing method to ensure the
Mr. Chao
September 22 , 2016
Page 2
required “field capacity” of either protective soil cover material or geocomposite
drainage material is achieved for the following conditions:

a. Spraying water on the geocomposite drainage material while the protective soil cover material is installed; or

b. Spraying water over the installed protective soil cover material by using a
water truck, which has an adequate capacity but shall not damage the installed geosynthetic liner system while in operation/movement over the landfill baseliner.

There are no specifications available for the oversaturation of earthen material.
Approximately 3% moisture is needed throughout the soil cover material. Based on our
experience at the site, the moisture content of the protective soil cover will be in the 15% to 20% range, well above the 3% minimum. It is unlikely water will need to be added to the protective soil cover. The Engineer will evaluate the soil moisture prior to the test.

iii. Should a leak be detected, who is responsible to excavate/expose the leak
location, to repair the damaged liner, to retest the seam of the geomembrane, and
to restore the liner system? Please clarify. If a leak is detected the General Contractor is responsible to excavate/expose the leak locations. The geosynthetic installer will be responsible to repair the damaged liner in
accordance with the CQA Plan.
3. (Section V. Quality Control and Field Calibration)
i. Dipole measurement or the measurement electrode spacing for the field survey shall be same as that used for leak detection distance/sensitivity test according to ASTM D7007-16. But the dipole spacing of 3 feet and the spacing between
measurement of 3 feet are predetermined in the sample of the Final Report
(Appendix C of the Work Plan). Please explain why and how the decision is made.

This spacing is used as “an example” in the report. This spacing is a typical distance used in order to find leaks of required size per ASTM. Based on LLSI’s experience a smaller spacing is not used because from this distance of 3 feet the sensitivity test leak will be
detectable.
ii. Please define the unit (inch or millimeter) of the specified 0.25 test hole.
The unit is “inch”. The Work Plan was revised to reflect this comment.

4. If a leak on the geomembrane liner is detected and repaired according to the approved Construction Specification, will the repaired area be resurveyed by the leak location test? Please clarify.

Mr. Chao
September 22 , 2016
Page 3
The liner will be repaired and tested in accordance with the CQA Plan. After the
protective cover is placed over the area, the area will be leak location tested again.
5. If a significant tear/defect on the primary liner is detected by the leak location test, the proper size of the primary liner enclosing the damaged section must be cut and removed
for further investigation to determine if the underlying layers of geosynthetics liners is
damaged. Please add this requirement to the plan.

We agree to this approach. If a significant tear or defect is detected, the underlying geosynthetics will be exposed and inspected. If additional tears or defects are located they will be repaired in accordance with CQA Plan.

6. What method of data collection (manually record or digital data acquisition) and analysis (graphical data analysis or voltage contour mapping data analysis) will be used in this project? Please specify.

Digital data acquisition and graphical data analysis will be used. The Work Plan was
revised to reflect this comment.
7. (Section VI, Final Report) The Solid Waste Section requires additional info, data,
document in the Final Report:
i. The schedule of submitting the Final Report after completion of the field work.
The final report prepared by LLSI will be completed in 7-10 days after completion of the
field work. SCS was planning to include this report in the Final Construction Certification
Report for Cell 1A. If NC DEQ desires the report be submitted separately, we can provide
the report to NCDEQ within 10-14 days after completion of the field testing.
ii. The information and involvements of LLSI & Contractors mentioned in the Section IV
of the Work Plan.
This information will be provided in the Final Report.
iii. The completed raw data files or records presented in Appendix B of the Work Plan.

LLSI can supply the forms mentioned in Section V. LLSI will not include the raw data files as they are the product of a proprietary program owned by LLSI and is considered confidential.

iv. Photos with date and detailed descriptions to show each leak location, the general setup/layout of the survey site, leak detection distance/sensitivity test, electrical insulation, the equipment and tool including data collection equipment for the survey.

We concur. This information will be contained in the final report.

Mr. Chao
September 22 , 2016
Page 4
v. The as-built drawings to show detected leak locations and CQC testing location on
the repaired area, the numbers and locations of electrodes (including the ones –
copper wires within the liner system, the survey lines, the location(s) of the artificial leak or actual leak.
We concur. This information will be contained in the final report.
vi. The report must be reviewed and approved by a Professional Engineer registered in the State of North Carolina.
We concur, the final report will be reviewed and approved by a Professional Engineer registered in the State of North Carolina.

8. (Appendix D) Will the copper wires that are placed inside the liner system for the Leak Location Test be removed or left in-place after the test is completed? Please clarify.

The wires will be left in place.
If you have any questions, additional comments, or need clarification on the above, please
contact Steve Lamb at 704-504-3107 or at [e-mail].

Sincerely,

Hartuan James Law, PE Steven C. Lamb, PE
Project Director Vice President/Project Director
SCS ENGINEERS, PC SCS ENGINEERS, PC

cc: John Workman, PE Waste Management Ed Mussler, PE, NCDEQ
John Murray, PE, NCDEQ
Sharon Korleski, PE, S&ME

M:\PROJECT FILES\02215305.02\Leak Testing Liner\LLSI Workplan\Response to DEQ Comments_9-22-16.docx
ATTACHMENT II
LEAK LOCATION SERVICES, INC.
16124 UNIVERSITY OAK ! SAN ANTONIO, TEXAS 78249 ! [phone] / FAX [phone]
LLSI Project 2526A
September 16, 2016
Revised Work Plan for:
GEOMEMBRANE LEAK LOCATION SOIL SURVEY OF
CELL 1A AT THE GREAT OAK REGIONAL LANDFILL
IN RANDOLPH COUNTY, NORTH CAROLINA
Prepared by:Approved by:
_____________________________
________________________Signature
John Ortiz
Senior Project Manager _____________________________
Name/Company
**CONFIDENTIALITY NOTICE**
THIS WORK PLAN CONTAINS INFORMATION THAT IS CONFIDENTIAL OR LEGALLY PRIVILEGED. THIS
WORK PLAN IS PROVIDED WITH THE STIPULATION THAT THIS INFORMATION IS FOR THE EXCLUSIVE USE
OF THE ENTITY NAMED ON THE COVER LETTER FOR SUBMITTING A BID FOR THE TITLED PROJECT. THE
DISCLOSURE OR DISTRIBUTION OF ANY OF THE INFORMATION TO ANY OTHER PARTY IS PROHIBITED.
I.INTRODUCTION
This Work Plan is for locating leaks in the geomembrane of Cell 1A at the Great Oak
Regional Landfill in Randolph County, North Carolina. The landfill cell has an area of
approximately 326,700 square feet. The cell floor area will be lined, from the bottom up, with a
prepared subgrade, 60-mil HDPE secondary geomembrane, LDS geocomposite drainage layer,
geosynthetic clay liner (GCL), 60-mil HDPE primary geomembrane, LCS geocomposite drainage
layer, and 24 inches of protective soil.
The sump area of the cell is lined, from the bottom up, with a prepared subgrade, 60-mil
HDPE secondary geomembrane, LDS geocomposite drainage layer, 60-mil HDPE primary
geomembrane, geosynthetic clay liner (GCL), 60-mil HDPE tertiary geomembrane, LCS
geocomposite drainage layer, and 24 inches of protective soil.
OVER TWENTY YEARS
www.llsi.com [e-mail]
Great Oak Landfill-Cell 1A Page 2 of 5
September 16, 2016 LLSI Revised Work Plan 2526A
A dipole soil survey will be performed on the primary geomembrane of the floor area and
on the tertiary geomembrane in the sump area after installation of the 24 inch thick protective cover
layer. This Work Plan describes the work that will be performed by Leak Location Services, Inc.
(LLSI) and the important site preparations and support to be performed by Contractor for a
successful leak location survey.
II.RESUMES OF ON-SITE SUPERVISORS
LLSI has been performing the proposed survey methods for more than 24 years. The
qualifications of LLSI personnel for performing geomembrane leak location services are unrivaled
in the industry. Table 1 shows the experience for the LLSI leak location personnel for leak location
surveys with earth materials on the geomembrane in the last three years. Appendix A contains
resumes of the on-site leak location supervisors.
Table 1. Leak Location Experience for Surveys on Earth Materials in the
Previous Three Years (2013 - 2015)
Survey Operator Earth (ASTM D7007)
Bryan Bergemann 6,825,000
Martin Morales 4,348,000
Edgar Barraza 7,453,000
Thane Hefley 6,495,000
Pissanu Gatesuwan 2,174,000
John Ortiz 6,081,000
Matthew Kemnitz 4,424,000
Dale Kemnitz 3,146,000
James Haynes 5,583,000
Total Area 33,880,000
III.PROPOSED WORK PLAN
A.General
The proposed work will be conducted on one mobilizations by a two person field
crew from LLSI with the assistance of two supervised laborers provided by Client. The survey of
Cell 1A will require up to 40-man hours in two consecutive days to complete. This schedule
Great Oak Landfill-Cell 1A Page 3 of 5
September 16, 2016 LLSI Revised Work Plan 2526A
assumes the landfill cell will be prepared for the survey when the LLSI personnel arrive on-site,
proper support, and that no more than three leaks per acre are located.
B.Survey
The Cell 1A primary and tertiary geomembranes will be surveyed according to ASTM
D7007-16. A systematic survey will be conducted on the earth materials covering the geomembrane
using the dipole survey method. The dipole survey is conducted by making point-by-point electrical
potential measurements on the wetted cover material. Typically between 1,500 to 3,000 data points
are collected per acre.
In accordance with ASTM D7007-16, the data will be digitally recorded using a
digital data acquisition system, stored and periodically downloaded to a computer for permanent
storage, graphical data plotting, and analysis. Manual measurements will be made to verify leak
signals and to pinpoint the leak positions on the cover material for excavation and repair while
survey personnel are on site.
IV.PREPARATIONS AND SUPPORT
Contractor will be responsible for the following support and preparations. Labor and
equipment support will be available during the hours and schedule designated by LLSI, including
working through weekends if needed. These preparations are described below.
•For the survey of the primary geomembrane, good electrical contact must be made
with the GCL between the geomembranes. A wire electrode must be installed
between the primary and secondary geomembranes in order to test the primary
geomembrane. The best way to implement this is to install a long bare copper wire.
The electrode wire will exit from between the primary and secondary geomembranes
at a convenient location. The exit point must remain accessible to leak location
survey personnel during the soil survey. A shorter bare copper wire will also need
to be installed in between the primary and tertiary geomembranes to test the sump
area. If feasible, layout the electrode wire perpendicular to the gcl to make
contact with each gcl strip in the sump before exiting through the tertiary liner.
Refer to Appendix D for directions describing the electrode wire installation process.
Contractor will be responsible for purchasing and installing the electrode wire.
Approximately 2500 linear feet of bare copper wire is required.
•Provide electrical isolation at the perimeter of the cell. Electrical isolation is
achieved by leaving a strip of bare geomembrane exposed around the perimeter of
the landfill cell, including ramps, and adjacent to tie-ins. The width of the strip
should be a minimum of one foot. If present, standing water must be removed from
Great Oak Landfill-Cell 1A Page 4 of 5
September 16, 2016 LLSI Revised Work Plan 2526A
the strip. Any other conduction paths from the earth materials to earth ground must
also be removed.
•To detect a leak, moisture must exist in the leak and be in contact with material
above and below the geomembrane. In addition to having moisture in the materials
above and below the geomembrane, the geocomposite on the geomembrane must
also be wet. If rainfall is not sufficient to wet the composite on the geomembrane to
the extend of having detectable moisture throughout, it must be sprayed with water
as the earth materials are placed. In addition, if the surface of the earth materials
dries out, water must be sprayed along the survey lines or the dry materials can be
scraped with a shovel or a hoe along the survey lines. Typically, a water truck and
driver are needed for wetting the surface of the earth material. If there is inadequate
moisture in the earth material layers for the surveys, the earth layer material must be
soaked with water prior to conducting the leak location survey.
•Provide a source of AC power of 110 to 125 volts AC with a current capability of 5
amperes near the edge of the area to be surveyed. Provide a fire extinguisher, if
required.
•Provide two supervised laborers with equipment to set flag lines and lay out survey
string lines as well as exposing any leaks found in the geomembrane.
•Provide two supervised laborers with equipment to help lay out the survey string
lines and flags, wet the survey area if the protective cover material is dry, excavate
the leaks, and other assistance.
•Remove standing water, if any, on the protection layer covering the geomembrane.
•If a significant tear/defect on the primary liner is detected by the leak location test,
the proper size of the primary liner enclosing the damaged section must be cut and
removed for further investigation to determine if the underlying layers of
geosynthetics liners is damaged.

V.Quality Control and Field Calibration
The quality control program is to use a series of forms and checklists to guide and
document the leak location surveys. Appendix B contains copies of these forms.
*General documentation.
*Safety briefing.
Great Oak Landfill-Cell 1A Page 5 of 5
September 16, 2016 LLSI Revised Work Plan 2526A
*Calibration.
*Documentation of leaks.
* Daily accomplishments and time record.
The leak location equipment will be tested for proper operation and leak detection
sensitivity using the procedures described in ASTM D7007-16. The survey equipment and
procedures will demonstrate the capability of detecting a 0.25-inch test hole or artificial leak. The
test hole will completely breach the geomembrane and must be filled with an electrically conductive
material for the test. LLSI has developed an artificial leak, per ASTM standards, that can be used
instead of an actual test hole. The artificial leak simulates the current flow through a hole in the
liner. A small hole must be excavated for placement of the artificial leak device above the
geomembrane. The artificial leak is then back filled with cover material and survey lines are taken
at various distances to determine the leak detection sensitivity. The results of the tests are
documented.
VI.SAMPLE OF A FINAL REPORT (PER ASTM D7007-16)
The general results of the survey will be reported to a designated representative of Contractor
during the daily progress of the field work. A list of the locations of the leaks found will be
submitted to the representative after completion of the field work and before survey personnel leaves
the site. A letter report documenting the work and results of the surveys will be prepared and
submitted within seven days after completion of the field work. Appendix C contains a sample of
the final report.

APPENDIX A
LEAK LOCATION SERVICES, INC.
16124 UNIVERSITY OAK ! SAN ANTONIO, TEXAS 78249 ! [phone] / FAX [phone]
Qualification Statement - 2016
I.INTRODUCTION
Leak Location Services, Inc. (LLSI) is the world leader in geoelectric leak location testing.
Our highly experienced and trained staff have the in-depth understanding of electrical leak location
methods to successfully perform leak location services with the efficiency required to keep projects
on time and within the cost proposed.
The principals of LLSI began the development of the geoelectric leak location method at
Southwest Research Institute in 1980 and the first commercial leak location survey was performed
in 1985. Leak Location Services, Inc. was formed in 1992 as a Texas corporation.
The technical staff of LLSI have a combined total of more than 145 years of commercial
geomembrane leak location experience. LLSI has performed more than 3,190 leak location surveys
and more than 461,000,000 square feet of survey. LLSI has successfully performed leak location
surveys worldwide for more than 23 years. LLSI has provided leak location services in 47 states,
eight Canadian provinces, and 28 foreign countries.
In 2015, LLSI completed 183 geomembrane leak location surveys. The area surveyed was
more than 30,292,000 square feet (695 acres). In the last three years, LLSI has surveyed 92,949,000
square feet (2,134 acres) of geomembrane. These surveys were performed in accordance with
ASTM standards D7002, D7007, D7240, and D7953.
LLSI has developed, designed, and built the specialized equipment required to perform these
services. The LLSI leak location equipment, software, and procedures are custom-designed and
fabricated by LLSI to produce unequaled leak detection capabilities. The equipment and procedures
have been improved and optimized through 23 years of field applications.
II.PERSONNEL QUALIFICATIONS
The personnel qualifications of Leak Location Services, Inc. are unmatched in the world.
Seven LLSI leak location personnel have more than five years of experience and have surveyed more
than 70 million square feet of geomembrane in the last three years. Table 1 in Section III of this
document lists the leak location experience in the last three years.
LLSI holds weekly training meetings to maximize operator proficiency and knowledge. LLSI
field personnel also have received safety training for OSHA HAZWOPER, OSHA Construction
Safety and Health, OSHA 30 Hour Construction Industry Outreach, MSHA work at surface mines,
SafeLand USA, confined space entry, first aid, and CPR. In addition, LLSI subscribes to the ISN,
PICS, PEC, Browz, and CanQual safety programs. Resumes of the LLSI personnel follow.
DAREN L. LAINE
As President and co-owner of Leak Location Services, Inc., Mr. Laine has more than 34 years
of experience in the development and application of electrical methods used for locating leaks in
geomembrane liners. He has performed numerous leak location surveys, including performing
surveys, in the United States, Europe, The Middle East, Far East, and South America. He holds a
BS degree in Geology from the University of California, Davis.
Mr. Laine is one of the original developers of the geoelectric leak location method for
geomembranes and is a foremost world authority on the application of this method. These
OVER TWENTY YEARS
www.llsi.com [e-mail]
Leak Location Services, Inc.Page 2 of 8
January 12, 2016 Qualifications and Experience Rev 0.0
specialized techniques have been used successfully for more than 30 years to locate leaks in
geomembrane liners used in a variety of applications.
Mr. Laine has actively pursued these techniques to provide a time-proven field service to the
environmental industry. He has authored or coauthored more than 16 papers on the geoelectric leak
location method and is an inventor for three U.S. patents.
GLENN T. DARILEK, P.E.
Mr. Darilek is the Principal Engineer and co-owner of Leak Location Services, Inc. He is
a Licensed Professional Engineer (Inactive) in the State of Texas and has a BS Degree in Electrical
Engineering from the University of Houston and a Master of Business Administration degree from
the University of Texas at San Antonio. He has 23 years of experience in research and development
in geophysical methods, geophysical instrumentation, and electronic systems design. He has been
involved in the development of the geoelectric leak location method for geomembranes beginning
in 1981 and in commercial applications of the technology since 1985. Mr. Darilek is the inventor
for nine U.S. patents.
Mr. Darilek was the Project Manager on the U.S. Environmental Protection Agency project
to develop the geoelectric leak location method to accurately locate leaks in the geomembrane liners
of landfills and liquid impoundments. He developed, tested, and demonstrated new methods to
locate the geomembrane leaks even when the geomembrane was covered with a protective soil cover.
Mr. Darilek is an expert in the geoelectric leak location method and is thoroughly familiar
with all aspects of the technology, including innovative applications, equipment design, equipment
fabrication, theoretical analysis, and software development. He is the author or coauthor of more
than 12 peer-reviewed publications on geomembrane leak location.
Mr. Darilek is instrumental in writing ASTM standards for geomembrane leak location and
participates in all revisions of the standards. He is a certified MSHA safety instructor.
MATTHEW KEMNITZ
Mr. Kemnitz is the Operations Officer / Project Engineer at Leak Location Services, Inc. He
has obtained the Engineer in Training certification and has a BS in Mechanical Engineering from
the University of Texas at Arlington. He has completed course work toward an MS in Civil
Engineering. He has experience in large-scale civil engineering projects involving residential and
commercial site developments prior to his employment at LLSI in 2009.
He has first-hand knowledge of all geomembrane leak location methods with most of his
experience in geomembranes covered with earth materials. Mr. Kemnitz has performed multiple
ELIM System data collections and surveys. He is also responsible for writing proposals and reports.
JOHN ORTIZ
Mr. Ortiz is a Senior Project Manager/ Safety Manager at Leak Location Services, Inc. He
has a BS in Environmental Science from the University of Phoenix and a BA in Psychology with a
focus in industrial and organizational psychology from The University of Texas at San Antonio. Mr.
Ortiz has first-hand knowledge of all geomembrane leak location methods. He is responsible for
developing proposals, reports, safety plans, training new employees, implementing safety programs,
and conducting safety meetings. He began working at LLSI in 2008 and he is a certified MSHA
safety instructor.
Leak Location Services, Inc.Page 3 of 8
January 12, 2016 Qualifications and Experience Rev 0.0
In 2015, Mr. Ortiz performed 16 geomembrane leak location surveys including an area of
2,990,000 square feet. Mr. Ortiz has also installed an Electrical Leak Imaging and Monitoring
System (ELIM) system as well as performed two ELIM System data collections and surveys.
DALE KEMNITZ
Dale Kemnitz is the Client Relations Officer and is a Project Manager at Leak Location
Services, Inc. Mr. Kemnitz joined the company in 2013 and is a business professional equipped with
more than 30 years combined leadership expertise with diverse business development capabilities
in environmental services, engineering support, and commercial product services. Relative to his
position is his track record of building, maintaining, and cultivating business relationships, along
with procuring and managing accounts. Mr. Kemnitz' business skills include enhanced operational
productivity, efficiency, and improved performance of organizations through skillful application and
understanding of internal business processes and environments as affected by external forces and
trends.
He has first-hand knowledge of all geomembrane leak location methods with most of his
experience in geomembranes covered with earth materials. In addition to his other duties, in 2015,
Mr. Kemnitz conducted eight geomembrane leak location surveys for 2,062,000 square feet of
geomembrane.
MARTIN MORALES
Mr. Morales is a Senior Staff Technician for field applications of the geoelectric leak location
method and is the shop manager for the construction and repair of the custom LLSI leak location
equipment. He has a Bachelors Degree in Electronic Engineering Technology from DeVry Institute.
He began performing geomembrane leak location services in 1998. His experience includes leading
crews for about 420 geomembrane leak location projects.
He was the on-site supervisor for the installation of four permanent leak monitoring systems.
He is thoroughly familiar with the work, including field applications, and equipment construction,
troubleshooting, and maintenance.
In 2015 alone, Mr. Morales led or performed 28 geomembrane leak location surveys for a
total area of 4,993,000 square feet of geomembrane. These included 2,607,000 square feet of
geomembrane covered with earth materials.
BRYAN BERGEMANN
Mr. Bergemann is a Senior Staff Technician who began performing geomembrane leak
location surveys in 1995. Mr. Bergemann holds the distinctions of having performed more
geoelectric leak location surveys and more area than anyone in the world. His experience includes
leading crews for more than 582 geomembrane leak location surveys. He is thoroughly familiar with
the work, including field applications, and equipment construction, and maintenance.
In 2015, Mr. Bergemann performed and supervised 23 geomembrane leak location projects
including an area of 5,088,000 square feet including 2,051,000 square feet of survey of bare
geomembranes.
EDGAR BARRAZA
Mr. Barraza is a Senior Field Technician and started work at LLSI in 2002. He has an
Associate of Applied Science in Electronic Engineering Technology from Hallmark Institute. He
Leak Location Services, Inc.Page 4 of 8
January 12, 2016 Qualifications and Experience Rev 0.0
has first-hand knowledge and all leak location methods, including leading more than 339 projects.
In 2015 Mr. Barraza led or worked on 29 geomembrane leak location projects including an area of
7,756,000 square feet of geomembrane. Of that total 3,609,000 square feet were on geomembrane
covered with earth materials.
THANE HEFLEY
Mr. Hefley is a Senior Field Technician and has an Associate of Applied Science in
Electronic Engineering Technology from Hallmark Institute. He started work at LLSI in 2002. He
has experience in all of the implementations of leak location surveys.
In 2015 alone, Mr. Hefley supervised or performed 39 geomembrane leak location surveys
including a total area of 6,758,000 square feet. These included 3,737,000 square feet of
geomembrane covered with earth materials and 2,099,000 square feet of bare geomembrane.
PISSANU GATESUWAN
Mr. Gatesuwan is a Senior Field Technician and has an Associate Degree in Computer and
Electronics Engineering Technology from ITT Technical Institute. He started work at LLSI in 2008.
He is experienced in electronic equipment fabrication and in all types of leak location surveys
provided by LLSI. In 2015, he performed 52 geomembrane leak location surveys including an area
of 4,989,000 square feet of geomembrane.
JAMES HAYNES
Mr. Haynes is a Field Technician and has a BA in Business Management from Whitworth
University. He has training in higher-level leadership and heavy aircraft maintenance in the Air
Force where he was responsible for training new employees for preflight servicing. He joined LLSI
in 2015 and has performed on 21 geomembrane leak location surveys including an area of 7,243,000
square feet of geomembrane. These included 5,583,000 square feet of geomembrane covered with
earth materials.
III. EXPERIENCE
The areas surveyed by current LLSI leak location personnel for three classes of leak location
surveys for the past three years are shown in Table 1.
Table 1. Full-Time On-Site Leak Location Field Experience for the Last Three Years (2013 - 2015)
Survey
Operator
Survey Type - ASTM D 7007, D7002, D7240, D7953 Total (sq. ft.)
Earth Water Bare
Bryan Bergemann 6,825,000 3,970,000 6,319,000 17,114,000
Martin Morales 4,348,000 3,894,000 2,591,000 10,833,000
Edgar Barraza 7,453,000 6,991,000 3,959,000 18,403,000
Thane Hefley 6,495,000 5,663,000 5,084,000 17,242,000
Pissanu Gatesuwan 2,174,000 6,103,000 4,544,000 12,821,000
John Ortiz 6,081,000 2,077,000 2,131,000 10,289,000
Matthew Kemnitz 4,424,000 783,000 430,000 5,637,000
Dale Kemnitz 3,146,000 666,000 1,118,000 4,930,000
James Haynes 5,583,000 303,000 1,357,000 7,243,000
Leak Location Services, Inc.Page 5 of 8
January 12, 2016 Qualifications and Experience Rev 0.0
IV.PUBLICATIONS
LLSI personnel have published more than 30 technical papers about the leak location method
and applications in the last 25 years. A list of most of these publications is available on the LLSI
web site at www.llsi.com/publication. Many of the publications can be downloaded.
V.PROJECTS
In the year 2015, LLSI completed 183 geomembrane leak location surveys including more
than 30,290,000 square feet (695 acres) of geomembrane liner. Table 2 lists the area and survey
type, leak location operators, and number of leaks located for these geomembrane leak location
surveys completed in 2015.
Table 2. Leak Location Surveys Completed in 2015
Completion
Date
Survey Type Survey Personnel Survey Area
(square feet)
Leaks
13-Jan Puddle Gatesuwan 73,600 1
13-Jan Towed Morales 31,860 2
17-Jan Puddle Gatesuwan 109,200 0
19-Jan Earth Morales, Hefley 346,000 0
20-Jan Towed Barraza 20,000 0
20-Jan Wading Bergemann 225 8
22-Jan Puddle Gatesuwan 19,200 0
22-Jan Towed Hefley 18,505 3
24-Jan Earth Morales 217,800 4
26-Jan Wading Ortiz, D. Kemnitz 156,800 60
12-Feb Towed Morales, Barraza 412,800 24
19-Feb Wading Gatesuwan 57,500 3
20-Feb Earth Morales, Barraza 223,000 4
4-Mar Towed Bergemann, Hefley,250,000 16
12-Mar Puddle Gatesuwan 19,200 0
12-Mar Earth Morales 97,500 0
17-Mar Towed Gatesuwan 181,500 1
17-Mar Towed Gatesuwan 181,500 2
19-Mar Towed Gatesuwan 84,000 3
19-Mar Puddle Gatesuwan 68,400 0
25-Mar Earth Hefley, Ortiz 279,000 6
2-Apr Towed Ortiz, Gatesuwan 92,000 6
8-Apr Earth Hefley, D. Kemnitz 182,250 2
11-Apr Wading Barraza 179,760 12
12-Apr Towed Gatesuwan 105,000 2
13-Apr Towed Gatesuwan 45,045 0
13-Apr Towed Gatesuwan 74,620 0
13-Apr Wading Morales 21,780 2
15-Apr Earth Ortiz 193,000 27
16-Apr Towed Hefley 195,000 2
20-Apr Puddle Gatesuwan 105,000 0
20-Apr Towed Hefley 240,000 13
23-Apr Puddle D. Kemnitz 105,000 0
23-Apr Wading Morales 21,780 1
24-Apr Earth Barraza, Haynes 740,520 0
24-Apr Wading Hefley 174,900 6
28-Apr Towed Hefley 116,400 2
Leak Location Services, Inc.Page 6 of 8
January 12, 2016 Qualifications and Experience Rev 0.0
Completion
Date
Survey Type Survey Personnel Survey Area
(square feet)
Leaks
30-Apr Towed Barraza 131,250 0
30-Apr Towed Hefley 239,400 9
4-May Towed Barraza 22,500 1
5-May Towed Barraza 84,750 1
5-May Earth D. Kemnitz 160,000 4
12-May Spark/Arc Gatesuwan 150,000 2
13-May Puddle Gatesuwan 30,000 0
13-May Towed Barraza 160,000 21
16-May Puddle Gatesuwan 50,000 0
20-May Earth Hefley, Haynes 200,000 1
24-May Towed Gatesuwan 174,000 0
31-May Puddle Gatesuwan 60,000 0
1-Jun Earth Morales 123,801 0
2-Jun Earth Ortiz, Haynes 200,000 2
3-Jun Towed Hefley 42,000 11
3-Jun Earth Ortiz, Haynes 261,360 7
3-Jun Towed Gatesuwan 14,800 0
4-Jun Puddle Morales, Barraza 217,800 3
4-Jun Earth Laine 40,500 1
6-Jun Puddle M. Kemnitz 150,000 1
10-Jun Earth Hefley 28,000 6
10-Jun Earth Hefley 10,000 1
15-Jun Towed Morales 150,000 4
17-Jun Towed Morales, Barraza 180,300 3
19-Jun Towed Hefley 12,000 0
19-Jun Towed Morales 150,000 3
20-Jun Earth Hefley 152,300 1
22-Jun Puddle D. Kemnitz 150,000 3
24-Jun Puddle Barraza 42,600 1
25-Jun Puddle Gatesuwan 15,500 0
25-Jun Wading Barraza 105,000 1
28-Jun Towed Morales 25,600 16
30-Jun Towed Hefley 82,500 6
30-Jun Towed Hefley 240,000 8
2-Jul Puddle Gatesuwan 73,600 1
7-Jul Earth Laine 148,500 3
7-Jul Towed Morales 49,900 2
8-Jul Wading Hefley 74,000 2
8-Jul Towed Morales 16,500 10
8-Jul Wading Ortiz 105,000 14
8-Jul Wading Laine 30,000 1
9-Jul Towed Gatesuwan 243,000 5
10-Jul Earth Barraza, Haynes 253,700 0
15-Jul Towed Ortiz 17,500 7
16-Jul Wading Hefley 97,000 0
16-Jul Earth Barraza, Haynes 305,000 1
18-Jul Spark/Arc Hefley 97,000 0
18-Jul Earth Bergemann, D. Kemnitz 513,000 2
19-Jul Puddle Hefley 41,000 0
19-Jul Spark/Arc Hefley 73,000 0
Leak Location Services, Inc.Page 7 of 8
January 12, 2016 Qualifications and Experience Rev 0.0
Completion
Date
Survey Type Survey Personnel Survey Area
(square feet)
Leaks
20-Jul Spark/Arc Hefley 41,000 0
20-Jul Earth Bergemann 4,400 0
21-Jul Wading Gatesuwan 3,600 0
21-Jul Wading Gatesuwan 40,000 5
22-Jul Spark/Arc Hefley 41,000 0
23-Jul Towed Gatesuwan 10,000 2
30-Jul Puddle Gatesuwan 70,000 0
31-Jul Earth M. Kemnitz 130,000 0
31-Jul Towed Hefley 195,000 4
5-Aug Puddle Morales 479,160 0
8-Aug Towed Gatesuwan 97,000 0
8-Aug Puddle Bergemann, Haynes 1,357,000 63
11-Aug Puddle Barraza, D. Kemnitz 348,480 0
12-Aug Earth Bergemann, Gatesuwan 370,000 3
12-Aug Earth Morales 283,140 3
12-Aug Special Ortiz 327,000 14
13-Aug Spark/Arc Gatesuwan 70,000 0
13-Aug Puddle Gatesuwan 90,000 1
14-Aug Spark/Arc Gatesuwan 90,000 4
18-Aug Earth Hefley 131,000 1
21-Aug Spark/Arc Gatesuwan 174,000 48
21-Aug Puddle Gatesuwan 108,000 4
22-Aug Towed Morales, Hefley 38,000 0
22-Aug Wading Morales, Hefley 45,000 7
24-Aug ELIM Morales 522,720 0
26-Aug Puddle Barraza 610,000 0
29-Aug Towed Bergemann, Haynes 35,000 11
31-Aug Puddle Ortiz 327,000 65
1-Sep Towed Barraza 136,000 7
3-Sep Towed Hefley 190,000 6
4-Sep Towed Bergemann, Haynes 54,000 14
5-Sep Puddle Gatesuwan 49,000 0
5-Sep Spark/Arc Gatesuwan 49,000 19
10-Sep Earth Bergemann 270,000 0
11-Sep Earth Ortiz, Haynes 435,600 0
11-Sep Puddle Hefley 50,880 1
12-Sep Puddle Morales 479,000 1
16-Sep Earth Bergemann 214,000 0
16-Sep Earth Haynes 43,560 0
18-Sep Towed Gatesuwan 47,000 0
23-Sep Earth Barraza, Haynes 261,000 0
24-Sep Earth M. Kemnitz, D. Kemnitz 447,000 1
24-Sep Towed Bergemann, Gatesuwan 45,000 10
28-Sep Earth Hefley 80,000 1
1-Oct Earth Bergemann 132,000 3
4-Oct Puddle Gatesuwan 66,300 2
4-Oct Puddle Bergemann 283,200 15
5-Oct Puddle Ortiz 78,000 0
6-Oct Puddle Gatesuwan 37,000 0
6-Oct Spark/Arc Gatesuwan 37,000 9
Leak Location Services, Inc.Page 8 of 8
January 12, 2016 Qualifications and Experience Rev 0.0
Completion
Date
Survey Type Survey Personnel Survey Area
(square feet)
Leaks
7-Oct Spark/Arc Gatesuwan 66,300 10
7-Oct Earth Morales, Haynes 335,400 4
8-Oct Earth Bergemann, Hefley 370,000 4
8-Oct Towed Barraza 235,500 0
9-Oct Earth Morales 43,560 0
13-Oct Earth Bergemann 130,000 2
14-Oct Earth Motales, Barraza, Gatesuwan 686,000 0
14-Oct Puddle Hefley 189,000 1
14-Oct Earth Ortiz, Haynes 240,000 5
16-Oct Wading Gatesuwan 174,000 7
17-Oct Puddle Bergemann, Barraza 300,840 5
19-Oct Puddle Gatesuwan 82,500 2
19-Oct Earth Laine, D. Kemnitz 215,168 4
20-Oct Earth Morales 141,500 0
20-Oct Towed Hefley 240,000 5
21-Oct Earth Barraza 138,000 0
22-Oct Towed Ortiz 204,700 1
27-Oct Towed Morales 67,000 0
29-Oct Earth Barraza, Hefley 304,920 7
30-Oct Towed Bergemann, Haynes 36,000 11
3-Nov Spark/Arc Gatesuwan 50,000 2
4-Nov Spark/Arc Gatesuwan 23,250 16
5-Nov Spark/Arc Gatesuwan 76,000 7
5-Nov Towed Bergemann, Haynes 18,000 9
7-Nov Spark/Arc Gatesuwan 23,250 4
8-Nov Spark/Arc Gatesuwan 76,000 5
11-Nov Earth Morales 108,900 2
11-Nov Wading Barraza 220,000 12
12-Nov Earth Ortiz, Haynes 323,000 1
13-Nov Wading Gatesuwan 19,200 0
21-Nov Wading Barraza 300,840 4
23-Nov Earth Hefley, Haynes 654,000 14
23-Nov Puddle Bergemann 110,000 3
1-Dec Earth Bergemann 1,000 1
4-Dec Earth Ortiz 77,000 5
5-Dec Towed Bergemann 64,000 4
9-Dec Wading Barraza 220,000 1
10-Dec Earth Barraza, Haynes 696,960 1
10-Dec ELIM Laine, M. Kemnitz 193,651 0
11-Dec Earth Bergemann, Hefley 365,800 9
12-Dec Earth Laine, M. Kemnitz 193,651 4
12-Dec ELIM Laine, M. Kemnitz 193,651 0
15-Dec Wading Barraza 220,000 0
20-Dec Towed Bergemann 165,000 9
22-Dec Earth Hefley, Haynes 633,000 15
29-Dec Towed Gatesuwan 110,000 0
---------------------
30,291,887 897

APPENDIX B
LEAK LOCATION SERVICES, INC.
16124 UNIVERSITY OAK ! SAN ANTONIO, TEXAS 78249 ! [phone] / FAX [phone]
QUALITY ASSURANCE FOR GEOMEMBRANE LEAK LOCATION SURVEYS
ON EARTH MATERIALS
Experience
Leak Location Services, Inc. personnel have at least 4 years of geomembrane leak location
survey experiance and have surveyed at least 12,000,000 square feet (111 hectares) of geomembrane.
This experience is supplemented by weekly training and project reviews.
Checklists
Quality Assurance is implemented through a series of checklists and documentation forms
that are used to verify that proper procedures were followed. Copies of the checklists follow.
Since 1992
www.llsi.com [e-mail]
EARTH MATERIAL LEAK SURVEY DOCUMENTATION - GENERAL
Owner’s Name of Facility (Cell Name) ___________________________Date_________________
Owner’s Name of Site ________________________________City, State ________________________
Personnel _______________ _______ Files D1N Use this file convention:Project No. ______
D - Day of Survey
_______________________ Files D2N second digit is operator number
N - Sequential Number for the day
_______________________ Files D3N
Client ___________________________Client Personnel _______________________________
CQA Firm______________________CQA Personnel_________________________________
Items in Bold are Needed for ASTM D 7007
Description of the Survey Site - slopes? bottom? gcl on slopes? ramps? cover? pond?
Climatic Conditions - (affect on survey?) __include on daily time reports____
Cover Material Description - max stone size, average stone size, amount of fines
Cover Material Condition - Moisture, Vegetation, etc.
Degree of isolation of the perimeter -
Remove leak detection pump, etc.____ Remove leachate collection pump, etc.______
Materials on Geomembrane Description - type of water, depth of water during survey, and thickness and
description of any sludge, earth materials, salt, or concrete on geomembrane
Geomembrane Code (Thickness (in mils) - Material 0 Texture/scrim) ________-_________-________
Thickness Material Type/Texture/Scrim
20 H - HDPE X - XR5 S - Smooth C - Conductive
36 L - LLDPE U - Unknown T - Textured O - Other
40 P - Polypropylene R - Reinforced
60 V - PVC N - Non Reinforced
80 C - Hypalon CSPER W - White
Liner System Layering (Top Down):
A - wAste G - Geonet O - sOil such as op layer U - Unknown Y - geosYnthetic clay liner
B- Brine M - geoMembrane not used for drainage V - woVen geofabric (unknown type)
C - Clay N - Nonwoven geofabric R - gRavel W - Water E - sEdiment S - Sand
Build up the components from the bottom up with preceding dimensions of the layers in inches. Break apart
geocompsite or geosynthetic clay liner including its components.
Description of Leak Location Method and Variations (staged water flooding?) -
Type of Source Electrode Type of Return Electrode
Survey Line Spacing Measurement Reading Spacing Dipole Spacing
Dipole Orientation _along survey lines____________________________________
_______ Survey along lines perpendicular to the beginning and end of the lines
_______ Survey along trench and pipe signals

Note: Draw facility and survey area on back of this sheet. Indicate north with arrow. Try to use Cartesian
coordinates where 0 line is along south edge, and 0 position is along west edge. SHOW 0 LINE. SHOW 0
POSITION. Indicate and dimension survey area if partial survey.
SAFETY BRIEFING
Owner’s Name of Facility _____________________________________Date____________________
Site Emergency Number ________________________________ Poison Control 1-800-222-1222
Site safety inspection conducted by _________________________________________
SAFETY BRIEFING FOR GEOMEMBRANE LEAK LOCATION SURVEYS ON SOIL
C There may be a high voltage between the soil on the geomembrane and earth ground.
C Do not come into electrical contact with soil on the geomembrane and earth ground at the same time.
C Do not place anything conductive (suction hose, ladder, extension cord, rescue hook, etc.) Between the
soil on the geomembrane and earth ground.
C Stay away from the current electrodes and current wires
C If you accidentally unplug or unclip a current wire or break a current wire, stay away and notify LLSI
personnel. Do not try to reconnect the wire, plug, or clip.
Signature Printed Name Company
Nearest Emergency Aid______________________________________________________________________
Tailgate Safety Meeting -
Date Topic Attending Initial
Daily MSHA Walk-through Inspection (Initial boxes):
Date Airborne Dust Housekeeping Traffic Slope Stability Nearby Workers PPE Other
Daily MSHA Vehicle Safety Inspection (Initial boxes) Vehicle License Number_________________
Date Fuel Lights,
turn
signals
Seat
Belts
Chocks Mirrors Brakes Windows
Clear
Tires
EARTH MATERIAL SYSTEM AND CALIBRATION DOCUMENTATION
Owner’s Name of Facility _______________________________Date____________Time __________
Recorder S/N___________Operator__________
Power Supply Output Voltage_____________VDC
Power Supply Output Current_____________
Coordinates of Source Electrode - Line_____ Position _____ft.
Type of Leak Test - Artificial ‘Actual Leak ‘
Size and Construction _______________________
What is Artificial Leak Connected to? Where? (Power supply?
Separate electrode?)
Coordinates of Artificial Leak - Line _____ Position ________ft.
Depth of Artificial Leak in Layering Sequence ______________
Starting Artificial Leak Current __________(See Diagram)
Finishing Artificial Leak Current ____________________Survey Line Layout for Artificial Leak Test
Data File Name for Measurement of Noise (N line)
with Artificial Leak Disconnected _______________
Data file Name (if different) for Artificial Leak
Measurements _____________________
Noise Peak Positive________ Noise Peak Negative___________ Peak -to-Peak Noise (N)________________
Line Number /
Position (ft.)
Peak
Positive
Peak
Negative
Signal (p-p) peak pos - peak neg
(S+N)
Signal/Noise
(S+N)/N
Pass or
Fail
-10
-7.5
-5
-2.5
0
2.5
5
7.5
10
Spacing between farthest Passed Line Positions__________ = Maximum Survey Line Spacing

RESULTS OF PERIODIC LEAK DETECTION SENSITIVITY TESTS
Needed for ASTM D 7007
Owner’s Name of Facility (Cell Name) __________________________Date _________________
Date/Time Operator/
Recorder
File
Number
Distance
from Leak
Peak
Positive
Peak
Negative
Signal
Level (p-p)
Signal/
Noise
Pass
or Fail
EARTH MATERIALS SURVEY DOCUMENTATION - SURVEY LINES
Owner’s Name of Facility (Cell Name) ___________________________Date_______________
Line and Position of Current Electrode____________________________
In Notes record position, amplitude, characteristics, results of manual investigation, leak type, measured size.
Line File
Name(s)
F
l
d
N
g
t
Notes
00
05
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
Line File
Name(s)
F
l
d
N
g
t
Notes
00
05
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
Leak Type (Use only one)Leak Locality (Note all that apply)
C - Cut (linear break with rough edges)F - Floor or Toe
E - Extrusion Weld B - Berm or side slope
F - Fusion Weld S - Sump
H - Hole (rounded puncture proably P - Panel
with downward or upward protruding rims)A - pAtch but not at tee
M - Machine Damage E - pEnetration
N - Needle Hole M - seaM
L - Linear Cut S - Solvent Weld T - Tee junction
T - Tear (linear or areal voids with irregular edges)O - tee Of patch
U - Unknown Other: __________________
DOCUMENTATION OF POWER SUPPLY CURRENT
Owner’s Name of Facility___________________________Dates__________________
Date/ Time Location of
Source
Electrode
Activity (STArt
survey,
INTermediate
reading, STOp
surveying)
Power
Supply
Voltage
Power
Supply
Current
Other Notes
If current changes to a low level,
find out why and correct it.

APPENDIX C
LEAK LOCATION SERVICES, INC.
16124 UNIVERSITY OAK ! SAN ANTONIO, TEXAS 78249 ! [phone] / FAX [phone]
Date
#########, Inc.
############ Blvd.
#########, ## #####
Attention:Mr. ##### #####
Email:############@####
Subject:Report for “Geomembrane Leak Location Survey of the 4-Acre #### #
Located at the ##### Landfill in #######, ######”;
LLSI Project ####
Dear Mr. #####:
On #### # and #### #, ####, Edgar Barraza of Leak Location Services, Inc. (LLSI)
conducted a leak location survey on the primary geomembrane of the #### # at the #####
Landfill in #######, ######. This report documents the results of the survey. The Appendix
contains the details of the survey.
Two leaks were found in the primary geomembrane of #### # at the ##### Landfill.
Figure 1 shows the approximate locations of leaks and Table 1 lists the approximate locations and
descriptions of leaks found in the landfill cell. The leak location survey was performed in
accordance with the ASTM Standard D7007.
If there are any questions regarding the geomembrane leak location survey or this report,
please contact us at [phone]. We appreciate the opportunity to have been of service to
#########, Inc.
Very truly yours,
John Ortiz
Project Manager
Approved by:
Daren L. Laine
President
Since 1992
www.llsi.com [e-mail]
Client - Project Page 2 of 4
Date LLSI Project ####
FIGURE 1. APPROXIMATE LOCATIONS OF THE LEAKS
FOUND IN #### # OF THE ##### LANDFILL
Table 1. Approximate Locations and Descriptions of Leaks
Found in #### # of the ##### Landfill
Leak Location Description
1 Near line 30 at position 144 feet,
approximately 136 feet from west toe
Linear break with rough edges
approximately 0.25 inches
2 Near line 125 at position 300 feet,
approximately 280 feet from west toe
Linear break with rough edges
approximately 0.125 inches

Client - Project Page 3 of 4
Date LLSI Project ####
APPENDIX
SURVEY DETAILS
I.DESCRIPTION OF THE SURVEY SITE
Date(s) -
Facility name -
Location - Near
Weather -
Survey area dimensions -
Cover material -
Geomembrane -
Layering from the bottom up -
Degree of Isolation -
II.SURVEY PARAMETERS
Dipole spacing - 3 feet
Spacing between measurements - 3 feet
Spacing between survey lines -_________ feet
Dipole orientation - parallel to survey lines
Operator -
III.LEAK LOCATION METHOD
A.Surveys with Earth Materials on the Geomembrane
The principle of the electrical survey method for geomembranes is to impress a high
DC voltage across the geomembrane and measure the resulting potential gradients on or in the
conducting material on the geomembrane. If any holes are present, characteristic anomalies in the
potential measurements are caused by electrical current flowing through the holes to indicate their
location.
A high voltage isolated DC power supply was used to impress a voltage across the
geomembrane using one electrode placed in the earth materials on top of the primary geomembrane
and a second electrode placed in the electrically conducting material located under the geomembrane.
The leak survey is conducted by making potential gradient measurements on the moist earth material
using a dipole probe using non-polarizing electrodes. These measurements were made along parallel
survey lines. A portable digital data logger is used to collect the data. The data is then downloaded
into a portable computer for display, plotting, and analysis. When a leak signal is detected, manual
measurements are made to accurately locate the leak position between the survey lines. The
locations of the leaks are marked for excavation. When the leaks are excavated and isolated from
the overlying earth materials, additional measurements are made in the vicinity to determine if there
are other nearby leaks.
Client - Project Page 4 of 4
Date LLSI Project ####
B.Equipment
The leak location power supply provides an excitation signal of approximately 60 to
340 volts DC. The data acquisition system has an input resistance greater than 50 megohms and
measures signals as low as 1 millivolt with an accuracy of about 1 millivolt.
D.Results of Artificial Leak Tests and Calibration Tests
Type of Test Leak Artificial
Diameter 6.4 mm
Depth 24 inches on geomembrane
Date Time Operator Recorder Distance from Leak Signal/Noise

APPENDIX D

LEAK LOCATION SERVICES, INC.
16124 UNIVERSITY OAK ! SAN ANTONIO, TEXAS 78249 ! [phone] / FAX [phone]
September 9, 2016
Electrode Installation Instructions for
Double Geomembranes with only GCL
These installation instructions are provided for placing a wire electrode in a double-lined
landfill where there is a layer of GCL and no earth materials between the geomembranes. A wire
electrode is used for making electrical contact.
The installation instructions are:
1.Wires - use bare solid 16 AWG copper wire or heavier. Somewhat smaller wire (18
gauge) is acceptable if great care is taken not to break the wires.
2. The wires must be installed in contact with the GCL between the primary and
secondary geomembranes. The wire should be in contact with a nonwoven side of
the GCL. If both sides of the GCL are nonwoven, the wire should go under the GCL.
3. Refer to the attached drawing for the approximate wire routing. Note that there are
two separate electrodes as needed to meet ASTM D7007.
4. Unroll the wire from the spool rather than pulling it off the end of the spool so it does
not have spirals or kinks.
5.At the junctions or to add wire to the end of a spool, splice the wires together by
tightly twisting them together, making sure the ends do not protrude. See Figure 1.
Do not let the ends of the wires stick out. Wrap the joint with suitable tape. If
needed, put a scrap of geonet or GCL between the splice and the geomembrane.
6.The ends of the wire must exit from between the geomembranes in the anchor
trench without contacting earth ground. Use a section of insulated copper wire,
slip insulating tubing over the wire, or tape the wire with electrical tape. LLSI must
connect to the wires during the leak survey. See Figure 2.
7.Fasten the ends of the wires to a leak detection pipe, stake, or other means so the
ends will not be buried. Barricade the areas where the wires exit from between the
geomembrane to prevent damage. Surveying the locations of the wires is also
recommended in case the ends are accidentally buried.
OVER TWENTY YEARS
www.llsi.com [e-mail]
Double-Geomembrane with Earth Materials Page 2 of 2
September 9, 2016 LLSI
Figure 1. Drawing Showing Wire Splicing Instructions
Figure 2. Drawing Showing Wire Electrode Placement and Exit Position
Please call Leak Location Services, Inc. at [phone] or email [e-mail] if you
have any questions.