1989-03
,'-,
0
......
:..
,.<~
'-
,.'~
~~
,......
,.....
'/
-
ðq - 003
RECEIVED FEB 1 4 1989
,..~
I-
l
r-
, I
L/
r~
./
f'"
I
I
r-
r~
~
f"'--
r-
l...
r-~
,
~
r -
~-
r~
'-
! ~
.
air maintenance services, inc.
POBOX 1146 710 WEST LAKE ST LONGWOOD, FLORIDA 32750 PHONE (305) 339-7134
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
II
Altair maintenance services, in'
8
A
PROPOSAL
TO THE
CITY OF CLERMONT. FLORIDA
FOR
OPERATION AND MAINTENANCE SERVICES
EMERGENCY REPAIR WORK
WASTEWATER AND STORMWATER COLLECTION SYSTEMS
September 28, 1988
Altair Maintenance Services, Inc.
710 S. Milwee Street
Longwood, Florida 32750
(407) 339-7134
.
8
CITY OF CLERMONT
POBOX 219. CLERMONT, FLORIDA 32711 . PHONE 9O4í394-4081
February 10, 1989
Robert L. Rothenberg
vice President, General Manager
Altair Maintenance Services, Inc.
P.O. Box 1146
Longwood, FL 32750
Dear Mr. Rothenberg:
Enclosed are two (2) executed copies of the maintenance agreement.
Please sign one and return it to me.
Thank you for your continuing service to the City of Clermont.
Sincerely,
CITY OF CLERMONT
d
WA SAUNDERS
City Manager
WS/jrnb
Enclosures
.
Altair
-
Sewer Maintenance / Concrete Restoration
maintenance services, inc.
February 13, 1989
Mr. Wayne Saunders
City Manager
City of Clermont
P.O. Box 219
Clermont, Florida
32711
Re: Operation and Maintenance Services
Emergency Repair Work
Wastewater and Stormwater Collection Systems
Dear Mr. Saunders:
Enclosed please find an executed copy of our agreement. I
want to thank you for your continued business and we look
forward to working with you on this project.
If you should have any questions concerning the
please feel free to contact me directly.
enclosed,
Very truly yours,
ALTAIR MAINTENANCE SERVICES, INC.
~,(P~~
Vice President ,General Manager
710 S. MILWEE STREET. P.O. BOX 521146 . LONGWOOD, FL 32752-1146 . PHONE (407) 339-7134
I
I
I
I
I
Altair maintenance services, in'
8
City of Clermont, Florida
Operation and Maintenance Services
Emergency Repair Work
Wastewater and Stormwater Collection System5
I
I
I
I
I
I
I
I
I
I
I
I
I
I
AGREEMENT
---------
This Agreement is made on this ___L_- day of ~~~~---
(date) (month)
_-'-'lJ_f- by
(year)
and
between
the
City
of
Clermont,
Florida, the Owner, and Altair Maintenance Services, Inc.
the Specialty Consultant of 710 S. Milwee Street; Longwood,
Florida 32750.
The
City
of
Clermont,
Florida
shall hereafter be known as the Client and Altair
Maintenance Services, Inc. shall hereafter be known as the
Consultant.
IN CONSIDERATION of the mutual promises contained in this
Agreement, the parties agree as follows:
Date Issued:
September 28, 1988
-l-
I
Altair maintenance services, inc.
8
I
I
I
City of Clermont, Florida
I
ARTICLE I.
I
1.1
Purpose
I
1. 1. 01
I
I
1.2
SCOPE OF SERVICES
The purpose of work under this Agreement is to
provide yearly operation and maintenance
services as well as emergency repair work on
the wastewater and stormwater collection
systems for the City of Clermont, Florida.
1. 2.01
Limits of Work
I
I
I
I
ARTICLE II.
2.1
The limits of work within which services will
be performed under this Agreement is the entire
wastewater and stormwater collection systems
within the City of Clermont, Florida
including but not limited to the underground
piping, service laterals, manhole structures
and storm basins.
STATEMENT OF WORK
I
2.1.01
Sewer Line Cleaning
I
I
I
I
I
The intent of sewer line cleaning is to remove
foreign materials from the lines and structures
and restore the sewer to a minimum of 95% of
the original carrying capacity. In order to
assure camera clearance and a non-obstructed
view of the interior of the pipeline, cleaning
may also be required prior to television
inspection. If internal pipe joint testing and
sealing is required, cleaning is necessary in
order to achieve the proper seating of the
internal packer on the inside of the pipe.
-2-
I
Altair maintenance services, inc.
8
I
I
I
City of Clermont, Florida
I
I
During sewer cleaning operations, satisfactory
precautions will be taken in the use of the
cleaning equipment to insure that damage to
public and private property is avoided. It is
recognized that there are some conditions such
as broken pipe and major blockages that may
prevent cleaning from being conducted or where
additional damage would result if cleaning were
to be attempted or continued. Should such
conditions be encountered, the Consultant will
notify the Client of the specific condition
immediately. The Consultant will not be held
responsible for any preexisting and unforeseen
condition, but merely will assist the Client in
determining the most cost-effective approach to
remedy the situation.
I
I
I
I
I
The designated sewer lines and structures will
be cleaned using hydraulically propelled, high
velocity jet, or mechanically powered
equipment. Selection of the equipment used
shall be based on the conditions of the lines
at the time the work commences. The equipment
and methods selected shall be satisfactory to
the Client's representative. The equipment
shall be capable of removing dirt, grease,
rocks, sand and other materials and
obstructions from the sewer lines and
structures. If cleaning of the entire section
cannot successfully be performed from one
manhole or structure, the equipment shall be
set up on the other manhole or structure and
cleaning again will be attempted. If, again,
successful cleaning cannot be performed or the
equipment fails to traverse the entire line
section, it will be assumed that a mojor
blockage exists and the Client will be informed
immediately.
I
I
I
I
I
I
I
-3-
I
I
Altair maintenance services, in~
I
I
I
8
City of Clermont, Florida
I
I
I
I
I
2.2
Roots shall be removed in the designated line
sections where root intrusion is a problem. To
aid in the removal of roots and at the option
of the Consultant, certain line sections may be
recommended for chemical foaming of the roots
with an approved herbicide. The application of
the herbicide shall be done in accordance with
the manufacturer's recommendations and
specifications.
2.2.01
Closed Circuit Television Inspection
I
I
I
I
I
I
2.3
Line sections and/or service laterals requiring
closed circuit television inspection to locate
defects or point sources of infiltration/inflow
will be cleaned prior to inspection in order to
assure camera clearance and a non-obstructed
view of the inside of the pipe. Cleaning will
be conducted as outlined in section 2.1.01 of
this Agreement. All television inspection will
be conducted utilizing a color camera. The
television camera used for the inspection will
be one specifically designed and constructed
for such inspection. Each line section will be
video taped and a television inspection log
will be prepared. Based on the results of the
inspection, the Consultant may recommend
certain remedial services outlined in this
Agreement that could be conducted at the option
of the Client.
I
2.3.01
Sewer Joint Air Testing and Sealing
I
I
I
Visibly leaking joints will be chemically
sealed and air tested using a closed circuit
television camera and internal packer. Those
sewer joints found to be defective or suspect
to have infiltration/inflow will be air tested
-4-
I
Altair maintenance services, in~
I
I
I
8
City of Clermont, Florida
I
I
I
I
I
I
and those joints failing the air test will be
chemically sealed and re-air tested to assure
that proper sealing has been achieved. Joints
failing the re-air test will be chemically
sealed and re-air tested until they pass the
air test. All visibly leaking joints will be
air tested after sealing to assure that
proper sealing techniques are used.
2.4
Structures, Storm Basin and Manhole Rehabilitation
2.4.01
I
I
I
I
I
I
I
I
I
2.4.02
2.5
Concrete and/or brick structures, storm basins
or manholes found to defective will be repaired
as directed by the Client. Those found to be
leaking will be chemically sealed and the
surrounding soils will be stabilized. Holes
will be drilled through the walls as necessary
and chemical grout (acrylamide) will be pumped
through the holes. Sufficient holes will be
drilled in order to assure that the leaks have
been sealed and the surrounding soil is in a
stable condition. After the sealing has been
completed, the holes are repaired using a
non-shrink grout material.
Concrete and/or brick structures, storm basins
or manholes found to require structual
rehabilitation will be repaired as directed by
the Client. A two-coat epoxy will be applied to
the interior surface. The application of the
epoxy shall be done in accordance with the
manufacturer's recommendations and
specifications.
2.5.01
Point Repair Without Excavation (Link Pipe)
Point repairs such as cracked pipe, collapsing
pipe and/or severe offset joints that have the
-5-
I
Altair maintenance services, in~
8
I
I
I
City of Clermont, Florida
I
I
necessary clearance will be repaired using
"Link Pipe". A collapsed pipe sleeve will be
pulled into the pipe and centered at the
defective pipe. This sleeve will be jacked open
and secured into place so that it fits very
snugly to the inside diameter of the pipe. The
sleeve will be available in different lengths
dependent on the length of pipe to be repaired.
This repair will be done in accordance with the
manufacturer's recommendations and
specifications. A sample brochure of this
method of repair is included in the appendix of
this Agreement.
I
I
I
I
ARTICLE III.
CLIENT RESPONSIBILITIES
I
3.1
Items of Responsibility
3.1.01
The Client shall be responsible for the
following items of work during the course of
this Agreement at no cost to the Consultant:
I
I
1. Provide access to all buried manholes,
structures and storm basins.
2. Provide any necessary permits and licenses.
I
3. Provide water from nearby hydrant to the
Consultant as needed to perform the work.
I
4. Provide necessary maps and pertinent
information regarding the stormwater and
wastewater collection systems.
I
5. Provide nearby dumping site for debris
removed during the course of the work.
I
I
-6-
I
Altair maintenance services, in~
I
I
I
I
I
8
City of Clermont, Florida
ARTICLE IV.
PERIOD OF PERFORMANCE
I
I
I
I
I
4.1
I
I
I
The period of performance under this Agreement is
one (1) year from the date of execution. The Consultant
will be available on a "as needed" basis to conduct any
of the items of work outlined in this Agreement. During
the course of this Agreement, the Client will identify
certain needs in order to effectively operate and
maintain the wastewater and stormwater collection
systems. Once the Client identifies a need for the
Consultant's services, the Consultant will outline the
work tasks required in order to achieve the Client's
goal and give the Client an estimate of the time that
is required to complete the tasks outlined.
The Consultant also agrees to be "on call" in case of
an emergency and will respond within twenty four (24)
hours of notice of the emergency.
This Agreement is renewable on a year to year basis at
the options of the Client and the Consultant.
5.1
ARTICLE V.
TERMS AND PAYMENTS
I
I
I
I
I
I
The Consultant will be reimbursed from the Client on a
day rate plus materials basis. The following day rates
and material costs shall apply for the entire term of
this Agreement:
Cleaning Crew Only (Hydraulic or Mechanical)
$ 880.00 per eight (8) hour day
$ 110.00 per hour overtime rate
TV Inspection or Sealing Crew Only
$ 800.00 per eight (8) hour day
$ 100.00 per hour overtime rate
Cleaning and TV Inspection Crew (Combined)
$ 1,296.00 per eight (8) hour day
$ 162.00 per hour overtime rate
-7-
I
Altair maintenance services, in~
8
I
I
I
I
City of Clermont, Florida
ARTICLE V.
TERMS AND PAYMENTS (Continued)
I
I
Manhole Sealing Crew
$ 800.00 per eight (8) hour day
$ 100.00 per hour overtime rate
I
I
Manhole Epoxy Crew
$ 760.00 per eight (8) hour day
$ 95.00 per hour overtime rate
Point Repair Crew (Link Pipe)
$ 1520.00 per eight (8) hour day
$ 190.00 per hour overtime rate
I
MATERIAL COSTS
I
I
I
--------------
Chemical Grout (Arcylamide)
Herbicide Root Treatment
Epoxy Kits
Link Pipe Repair Sleeves
$ 5.00 per gallon
$ 61.25 per gallon
$ 54.00 per kit
see price list in appendix
5.2
Invoices
I
5.2.01
Invoices will be submitted monthly for work
actually conducted. Terms are net 30 days with
no retainage provisions. If payment is delayed
beyond 45 days on any invoice, an interest
charge of 1.5% per month on the outstanding
balance will be applied.
I
I
I
I
I
5.2.02
The pricing provisions of this Agreement will
remain in effect for sixty (60) days prior to
contract signing. After that time, the terms
and payments are subject to change.
-8-
I
Altair maintenance services, in~
8
I
I
I
City of Clermont, Florida
I
ARTICLE VI.
ENTIRE AGREEMENT, MODIFICATIONS
I
I
This Agreement constitutes the sole and entire
Agreement between the Consultant and the Client and any
or prior contemporaneous understanding or agreement,
oral or written, are merged therein. Accordingly, the
parties expressly waive all provisions contained in
correspondence, forms or other writings relating to the
sale of the services covered by this Agreement which
negate, limit, extend, or conflict with the provisions
thereof. No subsequent modifications or changes in this
Agreement shall be effective, unless in writing,
submitted from one party and accepted by the other. In
the event that any provision in this Agreement is held
illegal and/or unenforceable, such holding shall not
effect the enforceability of the remaining provisions
of this Agreement.
I
I
I
I
I
I
I
I
I
-9-
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Altair maintenance services, in'
City of Clermont, Florida
ARTICLE VII.
ENDORSEMENT
8
Endorsement by an official of the City of Clermont,
Florida will be Altair Maintenance Services, Inc. authorization
to proceed with work under this Agreement.
Accepted for:
City of Clermont, Florida
(S¡g~~-----------
---~f~~--~-~~~~~------------
(Name)
(TifÍ;~--~~~~d~~----------------
_____~f!~!J__---------------------
(Date)
Accepted for:
Altair Maintenance Services, Inc.
&~~----
Robert L. Rothenberg
---------------------------------
(Name)
Vice President, General Manager
---------------------------------
(Title)
September 28, 1988
---------------------------------
(Date)
-10-
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
8
8
APPENDIX
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Altair maintenance services, in"
8
City of Altamonte Springs. Florida
APPENDIX
--------
LINK PIPE REPAIR SLEEVES
Pipe Wall Laying Weight Inside
Diameter Thick Length (lbs.) Diameter Cost
-------- -------- -------- ------ -------- -------
15 inch 0.54 in. 17.7 in. 22 12.9 in. $475.00
18 inch 0.62 in. 17.7 in. 30 15.8 in. $525.00
21 inch 0.77 in. 17.7 in. 16 18.5 in. $625.00
24 inch 0.59 in. 17.7 in. 12 21. 8 in. $700.00
27 inch 0.59 in. 17.7 in. 12 24.8 in. $775.00
30 inch 0.59 in. 17.7 in. 49 27.8 in. $825.00
36 inch 0.59 in. 17.7 in. 59 33.8 in. $900.00
42 inch 0.59 in. 17.7 in. 70 39.8 in. $975.00
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
.
.
BROCHURES
II'.
iJ
~I'
"
il
.' 8
Altair møi?tenønce services, Inc.
e
TECHNICAL SPECIFICATIONS
The
following
specifications,
which
are
made
part
of
this
proposal,
establish
the
procedures,
limits
and
performance
Rtandard for each task of work.
It iR intended that all work be
performed in accordance with these specifications.
These
specifications are current with,
and endorsed by,
NASSCO
(The National Association of Sewer Service Companies).
TELEVISION INSPECTION
Intent:
The
intent of the television inRpection phase
of
the
work is to provide a detailed,
documented,
visual inspection of
the interior condition of the pipe lines.
Documentation of
the
inspection
results
shall be used to determine the need for
any
additional work.
It is recognized that there are some conditions
such as broken pipe, protruding building sewer connections, major
blockages,
etc. ,
that
may
prevent the inspection
from
being
accomplished.
Should such conditions be encountered, Altair will
T10t be required to inspect those specific manhole sections.
EQUIPMENT:
The
television
camera
used for the
inspection
shall
be
one
specifically
designed
and
constructed
for
such
inspection.
Lighting
for
the
camera shall be Ruitah]p
to
allow
a
clear
picture of the entire periphery of the pipe.
The camera shall be
operative
in 100% humidity conditions.
The camera,
television
monitor and other components of the video system shall be capable
of
producing picture quality to the satisfaction of the
Owner's
8
Altair maintenance services, Inc.
8
Representative: and if unsatisfactory, equipment shall be removed
and no payment will be made for an unsatisfactory inspection.
INSPECTION:
The camera shall be moved through the line in either direction at
a
moderate
ra te,
stopping
when
necessary
to
permit
proper
documentation
of
the sewer's condition.
In no case
will
the
television
camera be pulled at a speed greater than 30 feet
per
minute.
Manual winches,
TV cable, and powered rewinds or other
devices
that do not obstruct the camera view or
interfere
with
proper
documentation
of the sewer conditions shall be
used
to
move
the
camera
through
the
sewer
line.
If,
during
the
inspection operation, the television camera will not pass through
the entire manhole section,
Altair shall set up its equipment so
that
the inspection can be performed from the opposite
manhole.
If,
again,
the
camera fails to pass through the entire manhole
section,
the inspection shall be consjdered complete and payment
shall be made for the entire manhole section length.
When
manually operated winches are used to pull
the
television
camera
through the line,
telephones or other suitable means
of
communication
shall
be set up between the two manholes
of
the
section
being
inspected to insure good
communications
between
members of the crew.
The
importance of accurate distance measurements is
emphasized.
Measurement
for
location
of defects shall be above
ground
by
Altair maintenance servlce!c.
e
means
of a meter device.
Marking on the cable,
or
the
like,
which would require interpolation for depth of manhole,
will not
be
allowed.
Accuracy of the distance meter shall be checked by
use of a walking meter,
roll-a-tape,
or other suitable
device,
and
the
accuracy
shall
be
satisfactory
to
the
Owner's
Representative.
DOCUMENTATION:
The
results
of
the
television inspection
shall
be
suitably
documented
by
Television
Inspection
Logs
kept
during
the
inspection operation.
The Owner shaJl have the option to select
additional forms of documentation,
provided adequate
additional
compensation is made to Altair.
Television
Inspection
Logs:
Printed location records shall
be
kept
by
the Contractor and will clearly show
the
location
in
relation
to
an
adjacent
manhole of
each
infiltration
point
observed
during
inspection.
In
addition,
other
points
of
significance
such
as
locations
of
building
sewers,
unusual
conditions, roots, storm sewer connections, broken pipe, presence
of
scale and corrosion,
and other discernible features will
be
recorded
and
a
copy of such records will be
supplied
to
the
Owner.
SEWER LINE CLEANING
Intent:
The intent of sewer line cleaning is to remove
foreign
materials
from the lines and restore the sewer to a
minimum
of
95%
of the original carrying capacity or as required for
proper
8
Altair maintenance services, Inc.
e
seating of internal pipe joint sealing packers.
Since the success of
the
other
phases of work depends a great deal on the cleanliness
of
the
lines,
the
importance
of
this
phase
of
the
operation
is
emphasized.
It is recognized that there are some conditions such
as
broken
pipe
and
major blockages that prevent
cleaning
from
being
accomplished
or where additional damage would result if cleaning were
attempted or continued.
Should such conditions be encountered, Altair
will not be required to clean those specific manhole sections.
If in
the course of normal cleaning operatiolls, damage does result from pre-
existing
and unforeseen conditions such as broken pipe,
Altair
will
not be held responsible.
CLEANING EQUIPMENT
(a)
Hydraulically Propelled Equipment:
The equipment used shall
be
of a movable dam type and be constructed jn such a way that a
portion
of
the dam may be collapsed at any time during the cleaning operation
to
protect against flooding of the sewer.
The movable dam shall
be
equal
in
diameter
to the pipe being cleaned
and
shall
provide
a
flexible
scraper around the outer perjphery to insure removal of
the
debris.
If
sewer cleaning balls or other equipment which cannot
be
collapsed
is
used,
special precautions to prevent flooding
of
the
sewers and public or private property shall be taken.
(b)
High-Velocity Jet (Hydrocleaning) Equipment:
All high
velocity
sewer
cleaning equipment shall be collstructed for ease and safety
of
operation.
The equipment shall have a selection of two or more high-
velocity
nozzles.
The
nozzles
sha]l
be capable
of
producing
a
8
Altair maintenance services, Inc.
8
action
from
15
to 45 degrees in all size
lines
designated
to
be
cleaned.
Equipment shall also include a high-velocity gun for washing
and
scouring
manhole walls and floor.
The gun shall be capable
of
producing
flows from a fine spray to a solid stream.
The
equipment
shall
carry
its
own
water
tank,
auxiJ j ary
engines,
pumps,
and
hydraulically driven hose reel.
CLEANING PRECAUTIONS:
During
sewer cleaning operations,
satisfactory precautions shall
be
taken in the use of cleaning equipment.
When hydraulically propelled
cleaning
tools
(which depend upon water pressure
to
provide
their
cleaning
force) or tools which retard the flow in the sewer line
are
used,
precautions
shall
be taken to insure that the water
pressure
created
does
not
damage
or cause flooding
of
public
or
private
property being served by the sewer.
When possible, the flow of sewage
in
the sewer shall be utilized to provide the necessary pressure
for
hydraulic cleaning devices.
When additional water from fire hydrants
is necessary to avoid delay in normal work procedures, the water shall
be
conserved and not used unnecessarily.
No fire hydrant
shall
be
obstructed in case of a fire in the area served by the hydrant.
SEWER CLEANING:
The
designated
sewer
manhole
sections
shall
be
cleaned
using
hydraulically
propelled
or
high-velocity
jet.
Selection
of
the
equipment
used shall be based on the concHtions of lines at the
time
the work commences.
The equipment shall be capable of removing dirt,
grease,
rocks,
sand,
and
other materials from the sewer lines
and
Altair mAintenance servlces!c.
e
manholes.
If
cleaning
of an entire section cannot be
successfully
performed from one manhole, the equipment shall be set up on the other
manhole and cleaning again attempted.
If, again, successful cleaning
cannot
be
performed or the equipment fajls to
traverse
the
entire
manhole
section
it will be assumed that a major blockage exists
and
the cleaning effort shall be abandoned.
Light cleaning shall be defined as debris accummulation of 20% of
the
pipe
diameter or less.
Heavy cleaning shall be defined as 20% of the
pipe diameter or greater.
MATERIAL REMOVAL:
All sludge,
dirt,
sand,
rocks,
grease and other solid or semisolid
material resulting from the cleaning operation shall be removed at the
downstream
manhole of the section being
cleaned.
Passing
material
from manhole section to manhole section,
which could cause additional
problems, will not be permitted.
DISPOSAL OF MATERIALS:
All
solids or semisolids resulting from the cleaning operations shall
be
removed
from the site and disposed of at site designated
by
the
Owner.
All
materials shall be removed from the site no
less
often
than
at the end of each workday.
Under NO circumstances will Altair
accumulate debris,
etc. ,
on the site of work beyond the stated time,
except ill totally enclosed containers and as approved by the Owner.
FINAL ACCEPTANCE:
Acceptance
of sewer line cleaning shall be made upon
the
successful
completion
of
the
television
inspection
and
shall
be
to
the
Altair maintenance services..
e
satisfaction of the Owner's Hepresen La I' i ve.
INSPECTION OF SERVICE LATERALS
Equipment:
The
mini-television
camera used for the lateral inspection shall
be
one
specifically
designed
and
constructed
for
such
inspection.
Lighting
for the camera shall be suitable to allow a clear picture of
the entire periphery of the pipe.
The camera should be operative
in
100% humidity conditions.
The
mini-camera
shall be housed in a special
launching device
which
positions and motivates the camera into each specific
lateral.
This
launcher
shall be monitored at all times by the main-line
inspection
camera.
This
equipment
shall
be constructed in such a way
as
to
provide a means for continuously measuring the location of the
camera
from an identifiable point of entry.
Inspection:
The
special
mini-camera launching device shall be inserted
in
each
referenced main line and moved through the line in either direction at
a moderate rate.
The launching device shall be positioned within the
] ine
in
such
a manner as to straddle the lateral to
be
inspected.
After
the launcher is properly positioned on the lateral,
the
mini-
camera
shall
be
moved through the latpral
(by
mechanical
means) ,
stopping
when
necessary
to
permit
proper
documentation
of
the
]ateral's condition.
Illspection Logs:
Printed
location records will be kept by Altair and will clearly show
Altair maintenance serVices,t.
e
the location of each pipe deficiency discovered during the inspection.
Points of significance,
such as leaking joints, conditions of joints,
unusual
pipe conditions,
collapsed sections,
presence of scale
and
corrosion and other discernible features wjlJ be recorded.
CHEMICAL GROUTING OF SEWER MAINS
SEWER PIPE JOINT SEALING
Intent:
It is the intent of the sewer pipe joint sealing work to seal
sewer pipe joints which have leakage rates of 1/4 gallon per minute or
more utilizing the internal joint sealing method.
It is realized that
this method may only be used on sewer pipe sections in sound
physical
condition.
Longitudinally
cracked
pipe mayor may not
be
sealed.
When
bell
cracks
or
chips are evident from
pipe
section
offset,
sealing
may be undertaken where the offset is small enough
to
a 11 ow
proper
seating of the sealing packer on bot}) sides of the joint to be
sealed.
Equipment:
The basic equipment for line sizes from 8"
inch
through
24"
inch diameter shall consist of a closed-circuit television system
( see
TELEVISION INSPECTION),
necessary chemical sealant
containers,
pumps,
regulators, valves, hoses, etc., alld joint sealing packers for
the various sizes of sewer pipes.
The packer shall be cylindrical and
}Iave
a diameter less than the pipe size alld have cables
attached
at
each
end
to pull it through the line.
The packer device
shall
be
constructed
in
a
manner to allow a restricted amount of
sewage
to
flow.
Sealing
Procedure:
Joints showing visible
leakage
shall
be
Joint
8
Altair maintenance services, Inc.
e
sealed
as specified.
Joint sealing shall be accomplished by forcing
chemical
sealing materials into or through faulty joints by a
system
of hoses, valves, regulators and sealing packers.
The packer shall be
positioned
over the faulty joint by means of a measuring
device
and
the
closed-circuit
television camera in the line.
It is
important
that
the
procedure used for positioning the packer
be
accurate
to
avoid
overpulling
the
packer
and
thus
not
effectively
sealing
(grouting)
the
intended
joint.
The
packer
ends
(end
elements,
sleeves)
shall be expanded usjng controlled pressure.
The
expanded
ends
shall
seal against the inside periphery of the pipe to
form
a
VOID
area
at
the faulty joint,
now completely
isolated
from
the
remainder
of
the
pipe
line.
Into
1-.his
isolated
area,
sealant
materials
shall
be
pumped through the
hose
system
at
controlled
pressures
which are in excess of groundwater pressures.
The pumping
unit,
metering equipment,
and the packer device shall be designed so
that
proportions
and
quantities of materials can
be
regulated
in
accordance with the type and size of the leak being sealed.
Records:
Complete records shall be kept of joint sealing performed in
each manhole section.
The records shall jdentify the manhole section
in which the sealing was done,
the location of each joint sealed, and
the joint sealing verification results.
CHEMICAL SEALING MATERIALS
Intent:
The intent of this section is to define the properties
that
the sealing materials will have to perform effectively in the intended
Altair maintenance serVices,!
8
application and under expected field conditions.
It
should
be
understood
that the
generically
classifed
chemical
materials
can achieve desired long-lasting results when used
in
the
proper
application and properly applied.
The knowledge and skill of
the applicator has a greater effect on achieving the
desired
results
than the specific sealing material applied.
In every case, mixing and handling of chemical sealing materials shall
be in strict accordance with the manufacturer's recommendations.
General:
All
chemical sealing materials used in the performance
of
the
work
specified
must
have
the
following
properties
and
characteristics:
(a)
While
being
injected,
the chemical sealant must
be
able
to
react/perform in the presence of water.
(b)
The
cured material must be capable of withstanding
submergence
in water without degration.
(c)
The
resultant
sealant
formation must prevent the
passage
of
water.
(d)
The sealant material,
after curing, must be flexible as opposed
to brittle or rigid.
(e)
In
place,
the
resultant sealant: formation shall
be
able
to
withstand
freeze/thaw
and
wet/dry
cycles
without
adversely
affecting the seal.
(f)
(g)
The sealant formation must not be biodegradable.
The
cured sealant should be chemically stable and resistant
to
Altair mAintenance serVices!.
e
concentrations of acids,
alkalis,
and organics found in normal
sewage.
(h)
Packaging
of component materials must be compatible with
field
storage
and handling requirement.
Packaging must provide
for
worker safety and minimize spillage during handling.
(i)
Mixing
of
component materials shall be compatible
with
field
operations and not require precise measurements.
( j )
Cleanup
must
be
done without inordinate use
of
flamable
or
hazardous chemicals.
(k)
Residual
sealing
materials must
be removable from
the
sewer
after
injection to insure no flow
reduction,
restriction,
or
blockage of normal sewage flows.
(1)
In
September,
1980,
the 1\PW1\ published "Assessment
of
Sewer
Sealants" under EPA Grant No.
R806567-01
(Office of R & D, U.S.
EPA,
Cincinnati,
OB 45268).
This report describes performance
attributes for a sewer sealant, many of which are listed above.
Chemical
Sealing
Materials:
The sealing materials to
be
utilized
during
the performance of the specified work shall be
an
acrylamide
base chemical grout.
The sealing material shall have a minimum of 20
years
documented successful use in thE' type of work
specified.
The
materials
shall
have
all
the
properties/characteristics
listed
previously
in
this
section and shall a1so conform to
those
listed
below.
(a)
A minimum of 10% acrylamide base material by weight in the
total
sealant
mix.
A
higher
concenLration (%) of
acrylamide
base
material
may be used,
when desirable,
to increase strength
or
Altair maintenance serVlce~c.
8
offset dilution during the induction period.
(b)
The
ability to tolerate some dilution and react in moving
water
during the induction period.
(c)
^ viscosity of approximately 2 centipoise which can be
increased
with additives.
(d)
A constant viscosity during the induction period.
(e)
A
controllable reaction time (induction period) from 10
seconds
to 1 hour.
(f)
A
reaction (curing) which
producps
a
homogeneous,
chemically
stable, nonbiodegradable, form, flexible gel.
(g)
The
ability to increase mix viscosity,
density and gel strength
by the use of additives, e.g. diatomaceous earth.
BUILDING SEWER SEALING
Intent:
It is the intent of buiJding sewer sealing to
seal
leaking
joint
and
other
defects
with
the
bui lding
sewer
line.
It
is
recognized
that this method cannot be used to repair major structural
defects
such as broken pipe or protruding service
connections,
etc.
Should
such conditions exist,
alternative
rehabiliation
techniques
such
as
excavation and replacement shall be selected to
effect
the
required repair.
EQUIPMENT:
The
basic
equipment
shall consist of
a
closed-circuit
television
system (see TELEVISION INSPECTION) and a special sealing packer device
along with the necessary chemical sealant containers, pumps, controls,
Altair mointenance services, ..
8
regulators,
valves,
hoses, etc.
The special sealing packer shall be
so
designed
that
it can straddle either 4 inch diameter or
6
inch
diameter building sewer connections )11 the main 8-15
inch
diameter.
When
properly
positioned
and with the end elements of
the
sealing
packer inflated,
the building sewer collnection shall be isolated from
the
remainder
of
the main sewer
line.
Additionally
the
special
sealing
packer a
device shall be constructed in such a manner as
to
maintain a restricted amount of continous sewage flow.
Generally, the
operations
in main lines where flows do not exceed the
maximum
line
flows as specified for joint testing/sealing.
SEALING PROCEDURES:
Building sewers showing leakage during the television inspection phase
of
the
work shall be sealed as specified.
Building
sewer
sealing
shall
be
accomplished
by
the
following
detailed
step
by
step
procedures:
(a)
Prior
to any sealing being attempted,
investigate the
type
of
construction
of the building sewer line.
Particular
attention
should
be
given
to determine if the
building
sewer
provides
service
to
one or more buildings.
In cases where two or
more
buildings
are
connected
to
single
building
sewer,
special
precautions
shall be taken during the sealing
operation.
Pre-
clean the building sewer if necessary.
(b)
place
the special sealing packer and television camera into
the
main line and move to the leaking building sewer.
position
the
sealing
packer
so
that
is
straddles
the
building
sewer
Altair maintenance servIces.!.
e
connection.
Inflate
the ends of the sealing packer to
isolate
the building sewer from the remainder of the main line sewer.
(c)
Insert
a grout sealing tube into the building sewer.
The
tube
shall
have a maximum outside diameter of one quarter (1/4)
inch
less
than the inside diameter of the building sewer.
Apply and
maintain
a minimum of 10 psi internal tube pressure
during
the
sealing operation.
(d) Inject the chemical
into the
sewer.
sealant through the special sealing
packer
annular space between the grouting tube and the building
The
injection of chemical sealant shall continue
until
the chemical fluid back-pressure is sufficient to insure complete
sealing of all the defects along the grout sealing tube.
(e)
Remove
the grout sealing tube from the building sewer
line
and
deflate the special sealing packer device.
(f)
Clean
the
building sewer line to remove any remaining
residua]
sealing materials.
BUILDING SEWER SEALING VERIFICATION:
Upon
completion of the sealing operation the special
sealing
packer
shall be deflated and made ready to move.
The television camera shal]
have
been positioned in such a location so as to permit inspection of
the
building sewer connection.
If no infiltration is
entering
the
main
sewer line through the building sewer,
then the building
sewer
will be considered sealed.
Altair møintennnce servlces.t.
8
RESIDUAL SEALING MATERIALS:
Any
residual,
sealing
material which may collect on the main
sewer
line
and which could reduce the main sewer line diameter or
restrict
the
normal
sewer flow shall be removed.
Removal
procedures
shall
conform to those specified (see SEWER LJMI~ CLEl\NING).
RECORDS:
Complete
records
shall
be
kept
of
all
building
sewer
sealing
performed.
The
records shall identify the manhole section in
which
the
sealing
work was done,
the specific location of
each
building
sewer sealed and the results of the verification inspection.
SEWER MANHOLE SEALING
--
Intent:
It is the intent to provide for the elimination of extraneous
water leakage into manholes that are otherwise structurally sound.
No
sealing
will be attempted in manholes where the structural
integrity
of
the
manhole has been lost.
All manhole sealing
shall
be
done
during high groundwater conditions,
unlpss the points of leakage have
been previously identified.
EQUIPMENT:
The
basic
equipment
shall
consist
of
chemical
pumps,
chemical
containers,
injection
packers,
hoses,
valves,
and
all
necessary
equipment and tools required to seal manholes.
The chemical injection
pumps
shall
be equipped with pressure meters that will
provide
for
Altair maintenance services, 8.
8
monitoring
pressure
during the injection of the
chemical
sealants.
When necessary,
fluid bypass lines equipped with pressure,
regulated
bypass valves will be incorporated into the pumping system.
MANHOLE SEALING PROCEDURES:
At
each point of leakage within the manhole structure a hole shall be
carefuly
drilled
from within the manhole and shall extend
into
the
manhole
wall.
In
cases where there are multiple leaks
around
the
circumference of the manhole,
fewer holes may be drilled
- providing
all leakage is stopped from these holes.
Into the previously drilled
holes,
chemical
sealant injection devices shall be placed in such
a
way that they will provide a watertiglll seal between the holes and the
injection
device.
A
hose,
or
hosps,
shall be
attached
to
the
injection
device from an injection pump.
Chemical sealing materials
as
specified
(see CHEMICAL SEALING MATERIALS)
shall then
be
pumped
through
the
hose until material refusal is recorded on the
pressure
gauge
mounted
on
the pumping unit or ('1
predetermined
quantity
of
sealant
has been injected.
Care shall be taken during
the
pumping
operation to insure that excessive presssures do not develop and cause
damage
to the manhole structure.
Upon completion of the
injection,
the
packers
shall
be removed and the remaining
holes
filled
with
mortar
and
troweled flush with the surface of the manholes walls
or
other surfaces.
The mortar used shall be of the "fast-set" type with
"nonshrinking" characteristics.
Altair maintenance services, tIP.
e
FINAL ACCEPTANCE:
l\fter
the manhole sealing opeation has been
completed,
the
manhole
shall
be
visually
inspected
for
the
elimination
of
excessive
infiltration by the Owner's Representatjve and the work shall be found
satisfactory to the Owner's Representative.
LINJNG OF MANHOLES (Fiberglass)
Intent:
It is the intent of this portion of the work to structurally
rehabilitate brick manholes by the installation of prefabricated glass
fiber reinforced manhole liners.
Reference Specifications: The materials used for lining manholes
shall be engineered to a standard of 16,000 pound vertical dynamic
wheel load (A1\SIIO 11-20). The manhole shall be fitted with a
fiberglass
reducer cone with no sidewall joints,
seams or
sections.
The
manhole liner shall meet all requirempnts of ASTM
Specifications
0-3753 for Glass Fiber Reinforced Polyester Manholes.
Installation Procedures:
The following procedures shall be
followed
for the installation of manhole lines.
(a)
Excavate
an
area
around
the
top
of
the
existing
manhole
sufficiently
wide
and
deep for removal of
the
manhole
frame
(ring) and corbel or cone section.
(b)
The
bottom
of
the manhole liner shall be cut to
fit
existing
manhole
base as closely as possible.
Cutouts in manhole
liner
shall
be
made
to
accommodate
existing
inlets,
drops,
and
cleanouts.
Cuts
should
be accurately made with
a
power
saw
Altair maintenance servlces8.
8
fitted with masonry-type blade or with a special jigsaw.
(c)
The
manhole
liner shall be lowered into the existing
brick
or
concrete
manhole
and
set into a guick-setting
grout
mixture.
Good
bottom seal shall be obtained in order to prevent
loss
of
grout
from the annular space between the outside of the
manhole
liner and the intprior of the old manhole.
A 6-inch height of a
quick-setting grout shall be placed above the initial bottom seal
in
the annular void area bet,ween the manhole liner and
existing
brick
or concrete manhole to insure adequacy of the bottom seal.
The
gap from drops,
cleanouts,
laterals,
and existing
piping
between the exis ting manhole wa 11 ancl the new manhole liner
walJ
shall
be
bridged
with short lengths of
PVC,
clay,
or
other
corrosion-resistant pipe.
Quick-setting mortar shall be used to
seal around all pipes.
(d)
The annular void between the manholE' liner and the existing brick
or
concrete manhole shall be fj lIed with a Portland
cement
and
sand grout.
The grout shall be made with four bags of cement per
cubic yard of sand.
(e)
The
existing
frame and
cover shall be reused and
finished
to
grade
by
constructing
a chimney on the
flat
shoulder
of
the
manhole
liner
using brick and mortar or precast concrete
rings.
In
no
case shall the cast iron ring be placed
directly
on
the
manhole liner.
Manhole
Lining
Acceptance:
After the manhole lining operation
has
been completed,
the manhole shall be visually inspected by Altair
in
Altair maintenance SerVICeA'!'
8
the presence of the Owner's Repr:esent'atJ ve and the work shall be found
satisfactory to the Owner's Representative.
CRACKED PIPE SEALING
Intent:
It
is
the
intent of cracked pipe sealing
to
provide
an
effective
repair
and otherwise prevent leakage of
extraneous
wat.er
into the sewer line.
Cracked pipe sealjng is most difficult and poses
more
risk
than conventional joint sealing.
It
is
recognized
and
accepted
that not all cracked pipe can be sealed/repaired,
depending
upon the nature and extent of the crack.
No cracked pipe sealing will
be attempted when the structural integrit,y of the pipe has been
lost.
Further,
Altair
shall not be held responsible for damage to the pipe
1 ine
which may occur during the
sealing/repair
operation.
Cracked
pipe
sealing shall be restricted to line sizes from 8 inch through 15
inch diameter.
EQU I Pl-1ENT:
The
basic equipment used for sealing cracked pipe shall consist of
a
television
inspection unit (see TELEVISION INSPECTION) and a
special
in
line sealing packer along with assocjat-ed chemical sealant
tanks,
hoses,
regulators,
etc.
The special in line sealing packer shall be
constructed in such a way that a minimum of 2 feet of cracked pipe can
be isolated and sealed at one tÜne.
When in use, the equipment shall
be
designed
to allow a restricted amount of sewage to
flow
at
all
times.
Altair maintenance servIces,.
8
CRACKED PIPE SEALING PROCEDURES:
Cracked
pipe that falls within the criteda for sealing and that show
visible
leakage shall be sealed as specified.
The sealing shall
bE'
accomplished
by forcing chemical sealing materials into
and
through
the
infiltration points by a system of pumps,
hoses,
and special in
line sealing packer.
The packer shall be positioned over the
crack,
or
a portion of the crack should it extend beyond two feet.
Once in
place
the
packer
ends shall be expanded to
isolate
the
crack
or
portion
of
the
crack
from the remainder of
the
line.
Into
the
isolated
area
the
chemical sealant shalJ be
pumped
in
restricted
volumes
and
with
pressures
adequate
to
overcome
the
external
hydrostatic
head
pressures.
Chemical sealant gel
times
shall
be
extended
as
necessary to insure the passage of the chemical
sealant
through
the cracked pipe and into the adjacent
soil.
The
pumping,
metering
and
packer device shall be integrated so that
proportions,
quantity and pressure of the injection can be precisely controlled
in
accordance with the type of crack and size of the leaks being sealed.
SEALING VERIFICATION:
Upon completion of the sealing operation,
the television camera shall
be
positioned
in
such a location as to observe the results
of
the
injection.
If visible leakage is still observed, then the work shall
tlot be considered satisfactory and the process shall be repeated until
all leakage has been stopped.
Altair maintenance serVices,..
8
RESIDUAL SEALING MATERIAL:
Residual
sea]ing materials that extend into the pipe reduce the
pipe
diameter,
or restrict the flow shall be removed from the
line.
The
seal
shall
be
left
reasonably
"[lush"
with
the
existing
pipe
surface.
If
excessive residual seaJing materials accumulate in
the
line
the
manhole
section shall be cleaned to
remove
the
residua]
materials.
RECORDS:
Complete
records
shall be kept of cracked pipe sealing performed
in
each manhole section.
The records shall identify the manhole section
in which the sealing was done,
the locòtion of each crack sealed, and
the sealing verification results.
CHEMICAL ROOT TREATMENT (Foamil~ Method)
InLellt:
The intent of chemica] root treatment is to kill tree
roots
in
sanitary/storm
sewer 1 ines and to inh i,bi t root
regrowth
without
damaging the trees, the environment, or the treatment plant.
Reference Specifications:
The chemica] root treatment material
sha] ]
be EPA registered and labeled for use jl\ sewer lines and acceptable to
the state agencies having jurisdiction over its use.
AU
materials
and
mixing/application procedures for
chemical
root
treatment shall be consistent with the Jatest standards, requirements,
and recommendations of the manufacturer of the chemical root treatment
Altair mnintennnce servIces..
8
material used.
Haterial:
The
active
ingredient
[or
killing
roots
shall
be
a
nonsystemic herbicide which will kj 11 roots at low concentrations
but
which
will not permanently affect parts of the plant distant from the
treated roots.
The active ingredient must be spontaneously detoxified
by
natural
chemical/biochemical processes following
its
use.
The
active ingredient shall not adversely affect the performance of waste-
water treatment plants.
The active ingredient for inhibiting root. regrowth in sanitary
sewers
shall inhibit root cell growth on contact but shall not be transported
so as to damage other por tions of the rIa n t:.
The material shall form
a
persistent
chemica] barrier suppressing the growth of
root
tips.
The
material shall be suffjciently stable under conditions of use
to
provide
protection
for
twelve
months
but
sha I J
be
subject
to
decompostion
in wastewater treatment, pJé1nt's without disturbing
plant
processes.
To improve transportation of the active ingredients into root tissues,
the root treatment material shall coJltain emuJsifiers to degrease root
masses
and
remove fatty acids from rool tissue
and
surfactants
to
convert
an
aqueous
solution
of the root
treatment
agent
into
a
volatile foam.
Application
Procedures:
Where conditions permit,
the volume of foam
sha 1)
be sufficient to completely fill
the air space above the
flow,
Altair mninteno;,ce service..
.
manhole to manhole.
In all cases, the volume of foam delivered to the
sewer
line
shall be sufficient to attach to and
permeate
all
root
mases.
SMOKE TESTING/PHYSICAL SURVEY AND FLOW ISLATION
-- - ----
Smoke
testing
and physical survey activities of the
sanitary
sewer
will
be
conducted to locate and quantify known as well as
suspected
sources of infiltration/inflow.
Visual defects will be documented on
a VIIS video tape and field sketches will be prepared.
A tabulation of
the
results
will be provided to the client in the form of
a
report
upon completion of the field work.
Line
Sections requiring flow isolation will be isolated by
plugging,
jf necessary,
and weir measurements will be taken.
All work will be
conducted during the night time, usually between the hours of midnight
and
6:00
A.M.
in
an
effort
to
mpêtsure
infiltration
ra tes.
Information
gathered will be tabulated and prioritized in an
interim
report.