32 Ill. Adm. Code 422.150
Mitigation Standard for Existing Housing
Section 422
Section 422.150 Mitigation
Standard
for Existing Housing
a) The Mitigation Standard (MS) includes requirements for
installation of radon remediation systems and provides a basis for evaluating
the quality of such installations. It provides the basis against which
in-progress or completed inspections will be evaluated.
b) Radon Mitigation Professional licensees shall be responsible
for all radon mitigation systems installed by their firm or its subcontractors
to ensure compliance with the requirements of this Mitigation Standard.
c) Limitations
1) Where discrepancies exist between provisions of the MS and
municipal codes, the municipal codes shall take precedence, except that the
municipal codes shall not take precedence with regard to alterations that may
adversely impact the radon reduction functions for which such systems were
originally designed and may adversely impact public health and safety regarding
exposure to a radioactive element.
2) Compliance with the MS does not guarantee reduction of indoor
radon concentrations to any specific level.
3) When altering a mitigation system, it shall be upgraded to the
requirements of this Section. Altering radon mitigation systems does not
include activities such as replacing worn out equipment or providing new
filters, while leaving the remainder of the system unchanged. When maintenance
is performed by a licensee on a mitigation system that does not comply with
this Part, the client shall be notified in writing that the mitigation system
does not comply with the mitigation standards of this Part. In addition, the
professional licensee shall provide a written estimate of the upgrades needed
and the cost to bring the system into compliance.
d) Quality Assurance. Radon Mitigation licensees shall follow
the procedures specified in the Quality Assurance Program as required by
Section 422.60(c)(5)(D).
e) General Practices. The following general practices are
required for all contacts between Radon Mitigation licensees and clients.
1) In the initial contact with a client, the licensee shall
review any available results from previous radon measurements to assist in
developing an appropriate mitigation strategy. If the radon measurement was
not performed in accordance with this Part, the client shall be advised that a
retest is recommended.
2) The licensee shall inform the client of or provide to the
client, Illinois specific documents, approved by the Agency, that discuss
interpretation of indoor radon test results and the health risk associated
with the radon level found in the building. These documents are available from the
Agency and are on the Agency web site.
3) The licensee shall inform the client in writing, at the time a
proposal for the installation of a radon reduction system is offered, of any
sealants, caulks, or bonding chemicals containing volatile solvents and of the
need to ventilate work areas during and after the use of such materials. The
licensee shall provide ventilation as recommended by the manufacturer of the
material used if existing ventilation does not meet the recommendations of the
manufacturer of the material used.
f) Building Investigation
1) The licensee shall conduct a thorough visual inspection of the
building prior to initiating any radon mitigation work. The results of the
inspection shall be recorded in detail on a drawing of the floor plan. The
licensee shall identify and describe any specific building characteristics and
configurations, such as large cracks in slabs, exposed earth in crawlspaces,
open stairways to basements, or air ducts under the slab of any foundation, and
operational conditions, such as continuously running HVAC systems, or operability
of windows, that may affect the design, installation, and effectiveness of
radon mitigation systems.
A) As part of this inspection, the licensee shall request from the
client any available information on the building, such as construction
specifications, pictures, drawings, etc., that might be valuable in determining
the radon mitigation strategy.
B) A floor-plan drawing shall be finalized from preliminary
inspection sketches and shall include illustration of the building foundation,
the location of all walls, drain fixtures, HVAC systems and radon entry points,
results of any diagnostic testing, the layout of any radon mitigation system
piping, and the location of any vent fan and system warning devices.
C) The finalized drawing shall be an auditable part of the
mitigation file and shall be available to the occupant, the owner of the
building, his/her representatives or the client, upon request.
2) The licensee shall conduct diagnostic tests to assist in
identifying and verifying radon entry points and shall document the results of
these tests in writing. Such tests may include radon grab sampling, continuous
radon monitoring, and the use of smoke sticks.
3)
If a contractor has
concerns about backdrafting potential at a particular site, the contractor
shall recommend that a qualified person inspect the natural draft combustion
appliances and venting systems for compliance with local codes and
regulations. The contractor shall recommend that the building owner bring into
compliance any combustion appliance or venting system found to be non-complying.
4) Licensees shall not install a fan-powered radon reduction
system in any building wherein confirmed spillage from any natural combustion
appliance occurs, until the licensee has confirmed that the problem has been
corrected by the client.
5) Licensees shall conduct a communication test prior to
completing a proposal for the installation of a radon reduction system in any
building where the characteristics of the sub-slab material are unknown to the
licensee. The results of the communication test shall be documented in writing
or on a drawing of the building floor plan.
g) Systems Design
1) All radon mitigation systems shall be designed and installed
as permanent, integral additions to a building, except in accordance with
subsection (e)(3).
2) All radon mitigation systems shall be designed to avoid the
creation of other health, safety, or environmental hazards to building
occupants, such as backdrafting of natural draft combustion appliances.
3) The main run of vent pipe, from primary suction point to
exhaust, shall be a minimum 3 inches in diameter to avoid excessive flow noise
inside the pipe and noise when the exhaust jet is released.
4) All radon mitigation systems and their components shall be
designed to comply with the laws, ordinances, codes, and regulations of
relevant jurisdictional authorities, including applicable mechanical,
electrical, building, plumbing, energy and fire prevention codes.
5) All radon mitigation systems shall be
designed to reduce a radon concentration in each area within the footprint of
the building as low as reasonably achievable (ALARA).
6) As installed, the mitigation system shall operate at a
reasonable noise level.
h) Systems Installation
1) General Requirements
A) All components of radon mitigation systems shall also be in
compliance with the applicable mechanical, electrical, building, plumbing,
energy and fire prevention codes, standards, and regulations of local
jurisdiction.
B) Where portions of structural framing material must be removed
to accommodate radon vent pipes, material removed shall be no greater than that
permitted for plumbing installations by applicable building or plumbing codes.
C) Where radon mitigation system installation requires pipes or ducts
to penetrate a firewall or other fire resistance rated wall, floor or ceiling
penetrations shall be protected in accordance with applicable building,
mechanical, fire and electrical codes.
AGENCY NOTE: An example of a protected penetration would be
the installation of a fire collar on a vent pipe penetrating a ceiling.
D) Sump pits shall not be used as the primary suction point for
mitigation systems, unless in accordance with subsection (h)(7).
2) Radon resistant construction is required of new one- and
two-family building construction. Active mitigation systems installed in new
construction must be performed by a licensed mitigation professional or
technician.
3) Radon Vent Pipe Installation
A) All joints and connections in radon mitigation systems using
plastic vent pipes shall be permanently sealed with adhesives as specified by
the manufacturer of the pipe material used, with 2 exceptions:
i) If secondary suction points are installed in sump pits, the
system shall be designed with removable or flexible couplings to facilitate
removal of the sump pit cover and for sump pump maintenance; and
ii) To facilitate maintenance and future replacement, radon vent
fans shall be installed in the vent pipe using removable couplings or flexible
connections that can be tightly secured to both the fan and the vent pipe.
B) All joints and connections in radon mitigation systems using a 3-inch
by 4-inch metal downspout on the exterior of a building shall be permanently sealed
with appropriate sealants.
C) Vent stack discharge points shall be directed vertically with
no obstruction in the discharge except for a rodent screen of wire mesh no
smaller than ¼ inch. The rodent screen or wire mesh shall be installed in a
manner that allows for easy removal for cleaning. Rain caps shall not be
installed on the discharge.
D) Radon vent pipes shall be fastened to the structure of the
building with hangers, strapping, or other supports that will permanently
secure the vent material. Existing plumbing pipes, ducts, or mechanical
equipment shall not be used to support or secure a radon vent pipe.
E) Radon vent pipes shall be supported as follows:
i) Supports for radon vent pipes shall be installed at least
every 6 feet on non-vertical runs.
ii) Vertical runs shall be secured either above or below the
points of penetration through floors, ceilings and roofs.
iii) Vertical runs shall be secured at least every 8 feet on runs
that do not penetrate floors, ceilings or roofs.
F) To prevent blockage of air flow into the bottom of radon vent
pipes, these pipes shall be supported or secured in a permanent manner that
prevents their downward movement to the bottom of suction pits or sump pits, or
into the soil beneath an aggregate layer under a slab.
G) Radon vent pipes shall be installed in a configuration that
ensures that any rain water or condensation within the pipes drains downward
into the ground beneath the slab or soil gas retarder membrane.
H) Radon vent pipes shall not block access to any areas requiring
maintenance or inspection. Radon vents shall not be installed in front of or
interfere with any light, opening, door, window or equipment access area
required by code.
I)
When a radon mitigation
system is designed to draw soil gas from a perimeter drain tile loop (internal
or external) that discharges water through a drain line to daylight or a
soakaway, a one-way flow valve, water trap, or other control device shall be
installed if diagnostic testing indicates that outside air is entering the
system.
4) Vent Stack Discharge Point. The
discharge from vent stack pipes of active soil depressurization systems shall
prevent re-entrainment of radon, prevent vent stack blockage due to heavy
snowfall and prevent the direct exposure of individuals outside of buildings to
high levels of radon by meeting all the following requirements:
A) Above the highest eave of the roof and
as close to the roof ridge line as possible, unless an attached garage may be
used for vent stack pipe discharge and all the following additional conditions
are met:
i) The vent stack point penetrates the
highest point on the roof that maximizes distance from people using the house,
yard,
patio, deck, etc.;
ii)
There are no windows in the direct line of sight from the vent stack
point;
iii) The vent stack point penetrates the
farthest point on the roof that maximizes distance from the nearest opening
(such as windows, doors, etc.) into the house and garage that is less than 2
feet below the exhaust point; and
iv)
The reason for routing through
an attached garage shall be documented and maintained for inspection by the
Agency;
B) 10 feet or more above ground level;
C) 10 feet or more from any window, door
or other opening into conditioned spaces of the structure that is less than 2
feet below the exhaust point. The 10 feet may be measured either directly
between the 2 points or be the sum of measurements made around intervening
obstacles;
D) 10 feet or more from any opening into
an adjacent building;
E) For vent stack pipes that penetrate the
roof, at least 12 inches above the surface of the roof; and
F) For vent stack pipes attached to or
penetrating the sides of buildings, vertical and at least 12 inches above the
edge of the roof and in a position to prevent blockage from snow or other
materials and from being filled with water from the roof or an overflowing
gutter.
5) Radon Vent Fan Installation
A) Vent fans used in radon mitigation systems shall be designed or
otherwise sealed to reduce the potential for leakage of soil gas from the fan
housing.
B) Radon vent fans used in active soil depressurization systems
shall be installed in attics, in garages that are not beneath conditioned
spaces, or on the exterior of the building. Radon vent fans shall not be
installed below ground nor in the conditioned (heated/cooled) space of a
building, nor in any basement, crawlspace, or other interior location directly
beneath the conditioned spaces of a building.
C) Radon vent fans shall be installed in a configuration that
avoids condensation buildup in the fan housing. Fans shall be installed in
vertical runs of the vent pipe.
D) Radon vent fans shall be mounted and secured in a manner that
minimizes transfer of vibration to the structural framing of the building.
E) Radon vent fans shall be to mounted to the vent pipe with
removable couplings or flexible connections to facilitate fan removal for
repair or replacement.
F) The intakes of fans used in crawlspace pressurization, or in
pressurizing the building itself, shall be screened or filtered to prevent
ingestion of debris or personal injury. Screens or filters shall be removable
to permit cleaning or replacement and the building occupant and owner shall be
informed of the need to periodically replace or clean such screens and
filters. This information shall be included in documentation provided to the
client.
G) Vent fans shall originate from a manufacturer that lists radon
mitigation as one of the fan's intended uses.
6) Suction Pit Requirement for Sub-Slab Depressurization (SSD)
Systems.
Materials
shall be excavated from the area immediately below the slab penetration point
of SSD system vent pipes to provide optimum pressure field extension.
7) Sump Pit Requirements
A) Sump pits shall not be used as the
primary suction point for mitigation systems except in accordance with
subsection (h)(7)(J).
B) Sump pits that require a sump pump
shall have a submersible sump pump installed, except in areas where the water
table is near the surface causing flooding of the basement or interfering with
the effectiveness of the mitigation system. (See subsection (h)(7)(D).)
C) When the sump pit is used as a
secondary suction point, a submersible pump shall be installed in the sump pit.
D) In areas where the water table is near
the surface, causing flooding of the basement or interfering with the
effectiveness of the mitigation system, pedestal pumps with a higher pumping
capacity may be installed in accordance with all the following conditions:
i) The pump is installed in accordance
with the manufacturer's instructions.
ii) The sump lid can be sealed air tight
with the exception of the tiny opening necessary to permit free operation of
the pedestal pump's float.
iii) The design does not create noise,
through the float opening, that is objectionable to the client.
E) Sump pits that permit entry of soil gas
or that would allow conditioned air to be drawn into a mitigation system shall
be covered and sealed to prevent such entry.
F) The covers on sumps that previously
provided protection or relief from surface water collection shall be fitted
with a water or mechanically trapped drain. Water traps shall be fitted with
an automatic supply of priming water.
G) Sump pit covers shall be made of
durable plastic or clear polycarbonate and be designed to permit air-tight
sealing.
H) Sump pit covers shall be designed to
support the weight of a 155-pound individual standing on the cover.
I) To permit easy removal for sump pump
servicing, the sump pit cover shall be sealed using silicone or other
non-permanent type caulking materials or an air-tight gasket.
J) When the basement of the home being mitigated has radiant heat
lines installed in or below the floor, the sump pit may be used as the primary
suction point. The radon vent shall include provisions for the removal of the
sump lid for maintenance of the sump pump.
8) Sealing Requirements
A)
Openings around radon vent
pipe penetrations of the slab, the foundation walls, or the crawlspace soil gas
retarder membrane shall be cleaned, prepared and sealed in a permanent,
air-tight manner using compatible caulks or other sealants.
B) Openings around other utility penetrations of the slab, walls
or soil gas retarder shall also be sealed. Cracks in slabs and other small openings
around penetrations of the slab and foundation walls shall be cleaned, prepared
and sealed in a permanent air-tight manner using caulks or other sealants
designed for such application.
C) Where a Block Wall Depressurization (BWD) system is used to
mitigate radon, openings in the tops of the block walls and all accessible
openings or cracks in the interior surfaces of the block walls shall be
cleaned, prepared and sealed with caulks or other sealants designed for such
application.
D) When sealing holes for plumbing
rough-in or other large openings in slabs and foundation walls that are below
the ground surface, non-shrink mortar, grouts, expanding foam, or other
sealants designed for such application shall be used.
E) Openings or cracks that are determined to be inaccessible or
beyond the ability of the licensee to seal shall be disclosed to the client and
included in the documentation.
F) Openings, perimeter channel drains or cracks that exist where
the slab meets the foundation wall (floor-wall joint), shall be sealed with
urethane caulk or other sealants designed for such application. When the
opening or channel is greater than ½ inch in width, a foam backer rod shall be
inserted in the channel before application of the sealant. This sealing
technique shall be done in a manner that retains the channel feature as a water
control system. Other openings or cracks in slabs or at expansion or control
joints should also be sealed.
G) When installing baseboard type suction systems, all seams and
joints in the baseboard material shall be joined and sealed using materials
recommended by the manufacturer of the baseboard system. Baseboards shall be
secured to walls and floors with adhesives designed and recommended for such
installations. If a baseboard system is installed on a block wall foundation,
the tops of the block walls shall be closed and sealed.
9) Soil Gas Retarder Requirements
A) A soil gas retarder membrane shall be
installed in basement or crawlspace areas without a concrete floor.
B) Plastic sheeting installed in
crawlspaces or basements as soil gas retarders shall be a minimum of 6 mil (3
mil cross-laminated) polyethylene or equivalent flexible material. Heavier
gauge sheeting shall be used when crawlspaces or basements are used for storage
or frequent entry is required for maintenance of utilities.
C) Any seams in soil gas retarder
membranes shall be overlapped at least 12 inches and sealed in a permanent air
tight manner using compatible glues. The membrane shall also be sealed around
interior piers and to the inside of exterior walls with furring strips and
sealant or in accordance with specific procedures approved by the Agency.
D) Access doors required by local building
codes shall be fitted with air tight gaskets and a means of positive closure,
but shall not be permanently sealed. In cases where both the basement and the
adjacent crawlspace areas are being mitigated with active SSD and SMD systems,
sealing of the openings between those areas is not required.
E) Crawlspace depressurization
without
the use of a soil gas retarder membrane shall only be used when the crawlspace
is inaccessible. When crawlspace depressurization is used for radon mitigation,
openings and cracks in floors above the crawlspace that would permit
conditioned air to pass out of the living spaces of the building, shall be
identified, closed and sealed. Sealing of openings around hydronic heat or
steam pipe penetrations shall be done using non-combustible materials.
F) Drain tile depressurization in a
crawlspace shall only be installed under the following conditions:
i) In conjunction with a sub-membrane
depressurization system; or
ii) Suction can be obtained beneath the soil gas retarder.
10) Electrical Requirements
A) All electrical components of radon mitigation systems shall
conform to provisions of the National Electrical Code and any additional local
regulations.
B) Wiring shall not be located in or chased through the radon vent
piping or any heating or cooling ductwork.
C) Any plugged cord used to supply power to a radon vent fan shall
be no longer than 6 feet in length.
D) No plugged cord shall penetrate a wall or be concealed within a
wall.
E) Radon mitigation fans installed on the exterior of buildings
shall be hard-wired into an electrical circuit. Electrical disconnects shall
be installed within line of sight and within 4 feet of the fan. Exteriorly,
plugged fans shall be used only inside of weather-proofed fan housings or
weather-proofed chases.
F) If the rated electricity requirements of a radon mitigation
system fan exceeds 50 percent of the circuit capacity into which it will be
connected, or if the total connected load on the circuit (including the radon
vent fan) exceeds 80 percent of the circuit's rated capacity, a separate,
dedicated circuit shall be installed to power the fan.
G) An electrical disconnect switch or circuit breaker shall be
installed in radon mitigation system fan circuits to permit deactivation of the
fan for maintenance or repair. Disconnect switches are not required with
plugged fans.
11) Drain Installation Requirements
A) If drains discharge directly into soil beneath the slab or
through solid pipe to a soakaway, the licensee shall install a drain that meets
local building codes.
B) If condensate drains from air conditioning units terminate
beneath the floor slab, the licensee shall install a trap in the drain that
provides a minimum 6-inch standing water seal depth, reroute the drain directly
into a trapped floor drain, or reconnect the drain to a condensate pump.
C) Perimeter (channel or French) drains shall be sealed with
backer rods and urethane or comparable sealants in a manner that will retain
the channel feature as a water control system.
D) When a sump pit is the only system in a basement for protection
or relief from excess surface water and a cover is installed on the sump for
radon control, the cover shall be recessed and fitted with a trapped drain
meeting the requirements of subsection (h)(7).
12) HVAC Installation Requirements
A) Modifications to an existing HVAC system that are proposed to
mitigate elevated levels of radon should be reviewed and approved by the
original designer of the installed HVAC system or by a licensed mechanical
contractor.
B) Foundation vents, installed specifically to reduce indoor radon
levels by increasing the natural ventilation of a crawlspace, shall be
non-closeable. In areas subject to sub-freezing conditions, the existing
location of water supply and distribution pipes in the crawlspace, and the need
to insulate or apply heat tape to those pipes, shall be considered when
selecting locations for installing foundation vents.
C) Heat Recovery Ventilation (HRV) systems shall not be installed
in rooms that contain friable asbestos.
D) In HRV installations, supply and exhaust ports in the interior
shall be located a minimum of 12 feet apart. The exterior supply and exhaust
ports shall be positioned to avoid blockage by snow or leaves and be a minimum
of 10 feet apart.
E) Contractors installing HRV systems shall verify that the
incoming and outgoing airflow is balanced to ensure that the system does not
create a negative pressure within the building. Contractors shall inform their
client, the occupant and the owner that periodic filter replacement and inlet
grill cleaning are necessary to maintain a balanced airflow. Information on
filter replacement and inlet grill cleaning shall be provided to their client,
the occupant and the owner and shall be included in the documentation.
F) Both internal and external intake and exhaust vents in HRV
systems shall be covered with wire mesh or screening to prevent entry of
animals or debris or injury to occupants.
13) Materials
A) As a minimum, all plastic vent pipes in mitigation systems
shall be smooth-walled Schedule 40 PVC.
B) Piping routed exteriorly shall be rated against deterioration
from ultra-violet radiation from the sun.
C) Exteriorly, Schedule 40 PVC or 3-inch by 4-inch metal downspout
shall be used as the vent pipe.
D) Vent pipe fittings in a mitigation system shall be of the same
material as the vent pipes except as noted in subsection (h)(3)(A).
E) Cleaning solvents and adhesives used to join plastic pipes and
fittings shall be as recommended by manufacturers for use with the type of pipe
material used in the mitigation system.
F) When sealing holes for plumbing rough-in or other large
openings in slabs and foundation walls that are below the ground surface, non-shrink
mortar, grouts, expanding foam or other sealants designed for such application
shall be used.
G) Penetrations of sump covers to accommodate electrical wiring,
water ejection pipes, or radon vent pipes shall be designed to permit air-tight
sealing around penetrations, using caulk or grommets.
H) Plastic sheeting installed in crawlspaces or basements as soil
gas retarders shall be a minimum of 6 mil (3 mil cross-laminated) polyethylene
or equivalent flexible material. Heavier gauge sheeting shall be used when
crawlspaces or basements are used for storage or frequent entry is required for
maintenance of utilities.
I) Any wood that comes into direct contact with the soil or
concrete and is used in attaching soil gas retarder membranes to crawlspace
walls or piers shall be pressure treated or naturally resistant to decay and
termites.
J) When transitioning from
one material or shape to another, an adapter specifically designed for the
transition shall be used.
K) Drain
tile or perforated pipe may be installed under soil gas retarders for the
purpose of depressurization and to allow condensation to drain back to the
soil.
L) The juncture of each radon vent pipe with the roof line shall
be made water tight by an approved flashing. Radon vent pipes discharge large
quantities of water vapor that will freeze at the discharge point; therefore,
lead vent flashings or any other flashing or cap that would impede the exhaust
from the radon vent are prohibited from use.
14) Monitors and Labeling
A) All active soil depressurization systems shall include a mitigation
system monitor to indicate fan operation system performance or warn of fan
failure.
B) Electrical radon mitigation system monitors (whether visual or
audible) shall be installed on non-switched circuits and be designed to reset
automatically when power is restored after service or power supply failure. Battery
operated monitoring devices shall not be used unless they are equipped with a
low-power warning feature.
C) Mechanical radon mitigation system monitors, such as manometer
type pressure gauges, shall be clearly marked to indicate the range or zone of
pressure readings that existed when the system was initially activated.
D) An Illinois Mitigation System Tag shall be placed on the vent
pipe next to the mitigation system monitor. This label shall be purchased from
the Agency and include the following information: "Radon Reduction
System"; the installer's name, phone number and the Illinois license
number; the date of installation; and an advisory that the building should be
tested for radon at least every 2 years.
E) All exposed and visible interior radon mitigation system vent
pipe sections shall be identified with at least one label on each floor level
that reads "Radon Reduction System".
F) Fans mounted outdoors and exterior vent pipe shall be
identified with a label that reads "Radon Reduction System" in a weatherproof
manner.
G) Sump pits that are depressurized by the mitigation system or
covered to minimize radon entry shall be identified with a label that reads
"Radon Reduction System – Removal of this cover may result in failure of
the Radon Reduction System. Consult (installer's name and phone number) before
removing this cover and for instructions on the correct procedure for replacing
it."
H) Circuit breakers controlling the circuits on which the radon
vent fan and system failure warning devices operate shall be labeled
"Radon Reduction System".
15) Post Installation Checklist
A) Upon completion of the installation of any radon mitigation
system, the licensee shall complete the following steps, and document them on
an installation check sheet that shall be signed and dated by a mitigation
licensee and shall become auditable evidence.
i) Re-examine and verify the integrity of the fan mounting seals
and all joints in the interior vent piping.
ii) Verify suctions or flows in the system piping or ducting to
assure that the system is operating as designed.
iii) Advise the client that retesting the building at least every
2 years or if the building undergoes significant alteration is recommended.
iv) Request a copy of the report of any post-mitigation testing
conducted by the client or by a Radon Measurement licensee.
B) Radon Mitigation licensees shall inform the client in writing
that post-mitigation testing should be conducted no sooner than 24 hours nor
later than 30 days following completion and activation of the mitigation system
and that the test may be conducted by an independent Radon Measurement licensee
or by the resident of the dwelling.
16) Post-Mitigation Testing
A) Evaluate the effectiveness of the mitigation system using an
approved measurement device to assure the system is performing as designed.
B) Post-mitigation tests shall be performed in accordance with the
applicable requirements of Section 422.130.
17) Contracts and Documentation
A)
No mitigation activity
shall be undertaken before a proposal for the work is accepted by the client,
as evidenced by the client's signature and date on the proposal.
A
proposal for the installation of any radon mitigation system shall include as a
minimum:
i) The Radon Mitigation Professional licensee's Illinois license
number;
ii) A statement describing the planned scope of the work and an
estimated completion date;
iii) A statement describing any known hazards associated with
chemicals used in or as part of the installation;
iv) A statement indicating compliance with and implementation of
the mitigation standards described in this Section;
v) A description of any system maintenance that the client, the
occupant, or the building owner would be required to perform;
vi) A firm price of the installation cost and an estimate of the annual
operating costs of the system; and
AGENCY NOTE: The firm price may
include stepped approaches.
vii) A statement that the system is guaranteed to reduce and
maintain the average radon concentration to less than 4.0 pCi/L and the
conditions thereof; or a statement explaining that there is no guarantee and
the reasons why there is no guarantee.
B) Licensees shall maintain the following records for 5 years or
for the period of any warranty or guarantees, whichever is longer, and shall
make the following records available to the homeowner upon request and
documentation of home ownership:
i) Copies of the building investigation summary and floor plan
sketch;
ii) The finalized drawing
that includes illustration of the building foundation, the location of all
walls, drain fixtures, HVAC systems and radon entry points, results of any
diagnostic testing, the layout of any radon mitigation system piping, and the
location of any vent fan and system warning devices;
iii) Pre- and post-mitigation radon test data;
iv) Copies of contracts and warranties;
v) A description of the mitigation system installed and its basic
operating principles;
vi) A description of any deviations from the MS and applicable
regulations of this Part;
vii) A description of the proper operating procedures of any
mechanical or electrical systems installed, including manufacturer's operation
and maintenance instructions and warranties;
viii) The proposal, contract, and warranties or guarantees made to
the client, and any other documentation important to the mitigation system
installed; and
ix) The address of the building mitigated, including the zip code,
the mitigation system type, the mitigation date, whether radon resistant new construction
techniques were used, and the Illinois Mitigation System Tag number.
C) Licensees shall, upon completion of the mitigation project,
provide clients with an information package that includes:
i) A list of appropriate actions for clients to take if the
system failure warning device indicates system degradation or failure; and
ii) The name, telephone number, and license number of the professional
licensee and the phone number of the Agency's Radon Program.