HomeMy WebLinkAboutLeak Location Services, Inc - Geomembrate Leak Location Survey of Two Ponds at PWRF (LLSI Proposal No. 3134)LEAK LOCATION SERVICES, INC.
OVER 25 YEARS
Mr. Derek Wiitala
City of Pasco
1025 S. Gray Avenue/ PO Box 293
Pasco, WA 99301
Email: wiitalad@pasco-wa.gov
November 7, 2019
Subject: Proposal for a Geomembrane Leak Location Survey of Two Ponds at the Process
Water Reuse Facility near Pasco, Washington
LLSI Proposal 3134
ID<-I<'. Dear Matt-,
Leak Location Services, Inc. (LLSI) is pleased to submit the enclosed proposal for
conducting a geomembrane leak location survey for the above mentioned site. LLSI is the most
experienced geomembrane leak location firm in the world and the qualifications of our field crews
are unmatched.
The technical staff of LLSI have a combined total of more than 89 years of commercial
geomembrane leak location experience. LLSI has performed more than 3,630 leak location surveys
and surveyed more than 549,640,000 square feet of geomembrane. LLSI has successfully
performed leak location surveys worldwide for more than 25 years. LLSI has provided leak
location services in 47 states, eight Canadian provinces, and 28 foreign countries.
In the attached proposal, your company is referred to as "Client." To engage our services
for the work please reference proposal 3134 in a purchase order or contract and sign the final page
of the proposal. If there are any questions regarding leak location surveys or this proposal, please
contact us at (210) 408-1241. We appreciate the opportunity to be of assistance on this important
service requirement.
Operations Manager
16124 UNIVERSITY OAK• SAN ANTONIO, TEXAS 78249 • (210) 408-1241 / FAX (210) 408-1242
WEB: WWW.LLSI.COM EMAIL: RESULTS@LLSI.COM
~ LEAK LOCATION SERVICES, INC.
OVER 25 YEARS
A Proposal for:
LLSI Proposal 3134
November 7, 2019
GEOMEMBRANE LEAK LOCATION SURVEY OF
TWO PONDS AT THE PROCESS WATER REUSE
FACILITY NEAR PASCO, WASHINGTON
Approved by:
~~
President
**CONFIDENTIALITY NOTICE**
TfflS PROPOSAL CONTAINS INFORMATION THAT IS CONFIDENTIAL OR LEGALLY PRIVILEGED. TmS
PROPOSAL AND COST QUOTE ARE PROVIDED WITH THE STIPULATION THAT TmS INFORMATION IS
FOR THE EXCLUSIVE USE OF THE ENTITY NAMED ON THE COVER LEITER 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 proposal offers these services for locating leaks in the primary geomembrane of the
above mentioned. The ponds have a combined area of approximately 1,325,000 square feet and
are lined with a single 60-mil HDPE geomembrane. The two ponds without water will be tested
by the bare liner method described in this proposal. This proposal describes the work that will be
performed by LLSI and the important site preparations and support to be performed by the Client
for a successful leak location survey.
IL QUALIFICATIONS
The technical staff of LLSI have a combined total of more than 89 years of commercial
geomembrane leak location experience. LLSI has performed more than 3,630 leak location
surveys and surveyed more than 549,640,000 square feet of geomembrane. LLSI has
successfully performed leak location surveys worldwide for more than 25 years. LLSI has
provided leak location services in 47 states, eight Canadian provinces, and 28 foreign countries.
16124 UNIVERSITY OAK• SAN ANTONIO, TEXAS 78249 • (210) 408-1241 / FAX (210) 408-1242
WEB: WWW.LLSI.COM EMAIL: RESULTS@LLSI.COM
City of Pasco
November 7, 2019
LLSI Proposal 3134
Page 2 of 6
In 2018, LLSI completed 134 geomembrane leak location surveys. The area surveyed
was more than 30,091,500 square feet (690 acres). In the last three years, LLSI has surveyed
approximately 86,119,300 square feet (1,977 acres) of geomembrane. These surveys were
performed in accordance with ASTM standards D7002, D7007, D7240, and D7953.
LLSI field personnel 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.
III. TECHNIQUE
A. General
The electrical leak location method detects electrical paths through the
geomembrane caused by water or moisture in the leaks. A voltage is connected to one electrode
that is placed in the water or soil covering the geomembrane and then to a second electrode
connected to the water or soil under the geomembrane or earth ground. Electrical current
flowing through the leaks in the geomembrane produces localized anomalous areas of high
current density near the leaks. These areas are located by making electrical potential
measurement scans in the water or soil covering the geomembrane.
B. Bare Liner Survey
The water puddle survey method for bare geomembranes is described in ASTM
D7002. A squeegee is used to push the water over the geomembrane during the survey. A low
voltage electrical supply is connected to earth ground and to the leak detector. When a hole in
the geomembrane is encountered, electrical current will flow through water in the leak contacting
earth ground. The current is monitored using an electronic detector that converts the increase in
the current to an audible tone indication.
LLSI uses a custom designed squeegee sensor with a custom designed electronic
detector. The geomembrane area is systematically scanned with overlapping coverage. When a
leak is detected, it is located exactly and marked for repair. The locations of leaks will be
documented.
To optimize the leak detection process the bare geomembrane should lay flat
against the subgrade that acts as the electrical ground path for the leak location survey method.
Therefore, the survey is best performed when the geomembrane is cool and not subject to
wrinkles. The best time to conduct the survey work is between the hours of 10:00 P.M. and
10:00 AM. Although, this is dependent on the time of year the survey is conducted as well as the
daytime temperatures during the survey.
Leak Location Services, Inc.
City of Pasco
November 7, 2019
C. Leak Detection Sensitivi ty Test -Bare Liner Survey
LLSI Proposal 3134
Page 3 of 6
The leak location survey equipment is tested for proper operation and
functionality using an artificial leak or an actual hole made in the geomembrane above the
operational level. The artificial leak is the end of an 18 A WG insulated wire with the other end
of the wire connected to the conducting media under the geomembrane. If an actual test hole is
used, it has a diameter of 0.039 inches. Proper equipment operation and functionality are
demonstrated if the test hole is detected when the squeegee sensor is passed over the artificial or
actual leak. The results of this test are documented.
D. Reporting
The general results of the survey will be reported to a designated representative of
the Client during the daily progress of the field work. A list of the locations of the leaks found
shall be submitted to the representative after completion of the field work and before the survey
personnel leave the site. A report documenting the work and results of the surveys will be
prepared and submitted within fourteen days after completion of the field work.
IV. PREPARATIONS AND SUPPORT-BARE LINER SURVEY
The client will be responsible for preparing the site for the survey before arrival of LLSI
personnel. These preparations include:
• · Provide a source of water for water puddle survey method. A small water truck is
ideal. The water supply should provide 5 gallons per minute with a pressure of at
least 40 psi. Standard garden hose faucet connections are required at the water
source. If a small water truck is used, one laborer may be needed to drive and
maintain the water pressure in the vehicle.
• Provide lighting if the leak location survey is conducted at night for the water
puddle survey method. One lighting trailer is required.
• Provide the assistance of four supervised laborers to help with handling the water
hoses and other assistance, in addition to the laborer manning the water truck.
The labor support must be available during the hours that the LLSI crew is
working, including working through weekends if needed. If wrinkles are
excessive an additional laborer may be needed to help walk out the wrinkles as we
progress.
• Remove standing water from the surface of the bare geomembrane. The client is
responsible for the removal of excess debris, sand bags, scrap liner, sediment,
rope, and/or any other materials in the pond that might interfere with the
sensitivity of the survey or create an obstruction.
• Repair any leaks found for retesting if needed.
Leak Location Services, Inc.
City of Pasco
November 7, 2019
LLSI Proposal 3134
Page4 of6
• This method of the leak location survey cannot be performed when temperatures
are below freezing or with ice on the liner.
V. SCHEDULE
Scheduling priority is given to the earliest firm authorization to mobilize. The projected
time for performing the proposed leak location survey as shown in the Cost section of this
document assumes no standby time. Work and standby will continue through weekends if
necessary. This proposal is valid for 90 days.
VI. COST
This proposal amount is based on information received from the client; if site location or
survey area varies to the degree that extra expenses are incurred, the Client will be billed for the
extra time in accordance with item B below. The costs for the survey work, including
equipment, mobilization, survey and report with additional cost items if needed are:
DESCRIPTION
A. Mobilization of a two-person field crew from LLSI, expenses*,
up to 80 hours of survey in five days, and report ............................. $ 28,550
TOT AL ESTIMATED COST* ................................................................... .$ 28.550
Additional Costs if Requested or Required:
B. Additional survey or standby time (greater of actual time or
8 hours per day)** ........................................................................... $ 225
C. Additional round trip mobilization per technician ( extra survey
hours may be required as per item B)........ ............ .. .... ....... $ 3,900
* Expenses included are: transportation, equipment shipping, local transportation,
lodging, meals, and expendable field supplies. Leak Location Services, Inc. requires five
business days prior notice of mobilization. If less notice is given, additional air fare charges may
be incurred and billed to the client.
** If standby occurs before proposed survey hours have been depleted then the proposed
survey hours are deducted from first. Any additional hours above hours proposed will be charged
at the additional survey or standby rate. Applies if more than the proposed time is needed to
complete the work because of lack of preparations or support, delays due to weather (lightning
within four miles, frozen soil, wind chill below 15 degrees F, excessive heat (above 95 degrees
F), wind speed above 25 mph, visibility below 1,000 feet, moderate rainfall or any other weather
condition that would present a safety hazard), numerous leaks (more than three leaks per acre) or
Leak Location Services, Inc .
City of Pasco
November 7, 2019
LLSI Proposal 3134
Page 5 of 6
delays caused by circumstances beyond the control of LLSI. The extra hours of work or standby
will be charged at the rate listed in item B. The survey cannot be conducted with more than one
inch of snow on the cover material or if any part of the cover material above or below the
geomembrane is frozen.
VII. INSURANCE
LLSI carries comprehensive general liability, hired non-owned automobile liability and
workers compensation insurance coverage with limits appropriate for construction projects of
this nature.
VIII .. PAYMENT
Client shall pay LLSI the amount stated in Section VI of this proposal for the work which
may include additional standby or survey costs. All invoices rendered Client by LLSI shall be
paid within 30 days from date of invoice. Should LLSI find it necessary to employ a collection
firm or attorney to collect any unpaid invoice amount, Client shall pay all fees required to
collect the unpaid debt.
IX. WARRANTY
As with any technology, there are ultimate limits to the technology and practical field
procedures. The electrical leak location method can accurately fmd the smallest electrical paths
of practical interest. However, conditions may exist where an electrical path is not established
through a leak because of preparations or other conditions not under the control of LLSI. LLSI
also has no control over the reliability or completeness of the repairs and has no control over
possible future geomembrane failures or damage to the geomembrane. For a small proportion of
the total cost of a geomembrane-lined facility, LLSI cannot assume any liability for possible
existing and future pollution damages and litigation costs.
Nevertheless, Leak Location Services, Inc. is the most experienced in the world for field
applications of the electrical leak location method for geomembranes, and the results of these
applications have been outstanding. To reflect these practical realities, LLSI provides the
following warranty:
LIMITED WARRANTY
LEAK LOCATION SERVICES, INC. WILL PERFORM THE PROPOSED WORK
DESCRIBED HEREIN IN A GOOD AND WORKMANLIKE MANNER WITH THE
DEGREE OF HIGH PROFESSIONAL SKILL AND SOUND PRACTICES AND
JUDGEMENT THAT IS NORMALLY EXERCISED BY RECOGNIZED
PROFESSIONAL FIRMS WITH RESPECT TO SERVICES OF A SIMILAR NATURE.
HOWEVER, BECAUSE THE WORK INVOLVES CONDITIONS THAT ARE NOT
UNDER THE CONTROL OF LLSI BEFORE, AFTER, OR DURING THE TESTING,
Leak Location Services, Inc .
City of Pasco
November 7, 2019
LLSI Proposal 3134
Page 6 of 6
LLSI DOES NOT WARRANT THAT IT WILL DETECT, OR IDENTIFY, OR MARK
ALL LEAKS IN THE GEOMEMBRANE.
IN ADDITION, LLSI DOES NOT ASSUME ANY LIABILITY FOR THE DIRECT,
FORESEEABLE OR CONSEQUENTIAL LOSS, COST OR DAMAGE RESULTING
FROM DEATH, PERSONAL INJURIES, LOSS OR DAMAGE TO PROPERTY, OR
IMPAIRMENT, OR ANY DAMAGE TO ANY RIGHT, INCLUDING BUT NOT BY ANY
WAY OF LIMITATION, THE RIGHT TO BE PAID FOR THE LOSS OF TIME, LOSS
OF SERVICES, FINES, PENALTIES, OR ATTORNEY'S FEES AND OTHER
EXPENSES INCURRED, ARISING OUT OF OR AS A CONSEQUENCE OF THE USE
OR MISUSE OF ANY SURVEY RESULTS, DATA OR OTHER INFORMATION
RESULTING FROM PERFORMING THE PROPOSED SERVICES.
THE PARTIES AGREE THAT ANY DAMAGES, CLAIMS, OR LOSSES INCLUDING
ENVIRONMENTAL OR POLLUTION DAMAGES, CLAIMS, OR LOSSES
RESULTING FROM THE WORK LLSI PERFORMS UNDER THIS AGREEMENT
WILL BE LIMITED TO THE AMOUNT OF COMPENSATION LLSI HAS RECEIVED
UNDER THIS CONTRACT.
Accepted and authorized:
Authorized Signature
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Printed N rune
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Purchase Order Number
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Date
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(Check box and enter NIA above)
Leak Location Services, Inc .