Maine Code § 23-3360-A

Protection of underground facilities
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1. Definitions. As used in this section, unless the context otherwise indicates, the following terms
shall have the following meanings.
A. "Business day" means any day other than Saturday, Sunday or a legal holiday. [PL 1979, c.
362, §2 (NEW).]
A-1. "Borrow pit" has the same meaning as provided in Title 38, section 482, subsection 1-A. [PL
1999, c. 718, §1 (NEW).]
A-2. "Commercial timber harvesting activity" has the same meaning as "timber harvesting
activities" as defined in Title 12, section 8868, subsection 5. [PL 2021, c. 30, §5 (AMD).]
B. "Emergency excavation" means immediate excavation necessary to prevent injury, death or loss
of an existing vital service. [PL 1979, c. 362, §2 (NEW).]

C. "Excavation" means any operation in which earth, rock or other material below the ground is
moved or otherwise displaced, by means of power tools, power equipment or explosives and
including grading, trenching, digging, ditching, drilling, augering, tunneling, scraping and cable or
pipe driving, except tilling of soil and gardening or displacement of earth, rock or other material
for agricultural purposes. [PL 2001, c. 577, §1 (AMD).]
C-1. "Excavator" means any person proposing to make, making or contracting for an excavation.
[PL 1991, c. 437, §1 (NEW); PL 1991, c. 437, §12 (AFF).]
D. "Person" means an individual, partnership, municipality, state, including an agency or
department of the state, county, political subdivision, utility, joint venture or corporation and
includes the employer of an individual. [PL 2011, c. 588, §1 (AMD).]
D-1. "Shoulder-grading activity" means highway maintenance work that involves the use of a
motorgrader or other suitable construction equipment with a blade on the shoulder of a road to
remove accumulated sand, gravel, sod or other material to establish drainage away from the
traveled portion of the highway. [PL 2001, c. 577, §2 (NEW).]
E. "Underground facility" means any item of personal property buried or placed below ground for
use in connection with the storage or conveyance of water, sewage, electronic, telephonic or
telegraphic communications, electric energy, oil, gas, liquefied propane gas or other substances and
including, but not limited to, pipes, sewers, conduits, cables, valves, lines, wires, manholes,
attachments, appurtenances and those parts of poles below ground. "Underground facility" does
not include:
(1) Highway drainage culverts or under drains; or
(2) Liquefied propane gas distribution systems that have underground pipes located on a
residential lot if:
(a) The residential lot has no more than one structure connected by underground pipes to
a liquefied propane gas distribution system;
(b) The structure that is connected by underground pipes to a liquefied propane gas
distribution system contains no more than 2 dwelling units; and
(c) The liquefied propane gas tank is located 25 feet or less from that structure. [PL 2023,
c. 572, §1 (AMD).]
F. "Underground facility operator" means the owner or operator of any underground facility, other
than an underground oil storage facility as defined in Title 38, section 562-A, subsection 21 or an
airport aviation fuel hydrant piping system, used in furnishing electric, telephone, telegraph, gas,
petroleum transportation, liquefied propane gas or cable television service. "Underground facility
operator" does not include a municipality or a public utility with fewer than 5 full-time employees
or fewer than 300 customers or a person that owns underground facilities on its own property for
commercial or residential purposes. [PL 2023, c. 572, §2 (AMD).]
G. "Utility" means any public utility as defined in Title 35-A, section 102, subsection 13. [PL
1991, c. 437, §1 (NEW); PL 1991, c. 437, §12 (AFF).]
[PL 2023, c. 572, §§1, 2 (AMD).]
1-A. Damage prevention system. Each underground facility operator shall be a member of and
participate in an underground facility damage prevention system, referred to in this section as the
"system." The system shall operate during regular business hours throughout the year and maintain
adequate operations at all other times to receive and process emergency notifications of proposed
excavations. The system shall receive notices of proposed excavations and immediately transmit those
notices to underground facility operators whose facilities may be affected. The cost for operation of
the system must be apportioned equitably among members. Nothing in this subsection prohibits a

municipality, utility or other entity that owns or operates an underground facility from voluntarily
becoming a member of the system. Notwithstanding subsection 1, paragraph F, a person that
voluntarily becomes a member of the system is deemed an underground facility operator for the
purposes of this section.
[PL 1999, c. 718, §2 (AMD).]
2. Responsibility of designers.
[PL 2001, c. 577, §4 (RP).]
3. Notice by excavator. A person may not begin excavation without first giving notice as required
by this section, unless exempted pursuant to this section.
A. In addition to any other notices required under this section, each excavator shall notify the
system of the location of the intended excavation at least 3 business days but not more than 30
calendar days prior to the commencement of excavation, except as provided in paragraph G. [PL
2003, c. 373, §1 (AMD).]
B. Notice may be in writing, by telephone or by electronic facsimile as long as an excavator
acquires and records an acknowledgement of the receipt of any notice the excavator sends by
electronic facsimile. For purposes of this section, the system shall provide a toll-free telephone
number. [PL 1991, c. 437, §3 (NEW); PL 1991, c. 437, §12 (AFF).]
C. Prior to notifying the system, the area of proposed excavation must be marked by the excavator
in a manner designed to enable the operator of the underground facility to know the approximate
boundaries of the proposed excavation. [PL 1991, c. 437, §3 (NEW); PL 1991, c. 437, §12
(AFF).]
D. If an excavation involves blasting, the excavator shall provide written notice of that blasting,
either in the initial notice or in a subsequent notice, accurately specifying the date and location of
that blasting. This written notice must be given and received at least 24 hours in advance except
that, in the case of an unanticipated obstruction requiring blasting, the excavator shall provide
written notice not less than 4 hours in advance of that blasting. [PL 1991, c. 437, §3 (NEW); PL
1991, c. 437, §12 (AFF).]
E. The excavation must commence within 30 days of notification under this subsection. If the
proposed excavation or blasting is not completed 60 calendar days after notification under this
subsection or the excavation or blasting will be expanded outside of the location originally specified
in the notification, the excavator responsible for that excavation shall again notify the system as
specified in paragraph A. [PL 2015, c. 213, §1 (AMD).]
F. In the case of an excavation involving subcontractors or other arrangements in which more than
one entity qualifies as the excavator under this section, the excavator directly responsible for
performing the excavation shall ascertain that all notifications required by this subsection and
subsections 5, 5-A and 10-A are performed. [PL 2011, c. 588, §3 (AMD).]
G. If an excavator notifies the system and nonmember operators as required by this section and is
informed by the system and each nonmember operator, including private landowners, that no
underground facilities exist in the proposed excavation area, the excavator is not required to wait
the 3 days as required by this subsection and subsection 10-A and may begin excavation
immediately. [PL 2011, c. 588, §4 (AMD).]
[PL 2015, c. 213, §1 (AMD).]
3-A. Notification by system. Upon receiving notice of excavation, the system shall notify
immediately all members whose underground facilities may be affected. The system shall maintain
adequate records to document compliance with requirements of this chapter.
[PL 1991, c. 437, §4 (NEW); PL 1991, c. 437, §12 (AFF).]

3-B. Additional notification by certain utilities. In addition to providing any other notices
required under this section and before commencing any excavation for the purposes of working on an
underground gas transmission line, a gas utility as defined in Title 35-A, section 102, subsection 8 or a
natural gas pipeline utility as defined in Title 35-A, section 102, subsection 10 shall provide to the fire
department within whose service area the excavation will occur notice of its intent to excavate. This
notice must be in writing or by telephone and must be given at least 3 business days prior to the utility
commencing work. The utility may not commence work until it has received from the fire department
an acknowledgment of the notice either by telephone or in writing.
[PL 1991, c. 437, §4 (NEW); PL 1991, c. 437, §12 (AFF).]
3-C. Information provided to municipalities, fire departments and emergency response
agencies. Each gas utility as defined in Title 35-A, section 102, subsection 8 or natural gas pipeline
utility as defined in Title 35-A, section 102, subsection 10 shall provide maps to:
A. Each municipality within which it operates gas or natural gas underground transmission
facilities. These maps must clearly indicate the location and depth of all main supply underground
transmission facilities located within the jurisdiction of the municipality; [PL 1991, c. 437, §4
(NEW); PL 1991, c. 437, §12 (AFF).]
B. Each fire department within whose service territory it operates gas or natural gas underground
transmission facilities. These maps must clearly indicate the location and depth of all main supply
underground transmission facilities located within the jurisdiction of the fire department; [PL
1991, c. 437, §4 (NEW); PL 1991, c. 437, §12 (AFF).]
C. Each county emergency management agency within which it operates gas or natural gas
underground transmission facilities. These maps must clearly indicate the location and depth of all
main supply underground transmission facilities located within the jurisdiction of the county
emergency management agency; and [PL 1991, c. 437, §4 (NEW); PL 1991, c. 437, §12
(AFF).]
D. The Maine Emergency Management Agency. These maps must clearly indicate the location
and depth of all main supply underground transmission facilities that the utility operates in this
State. [PL 1991, c. 437, §4 (NEW); PL 1991, c. 437, §12 (AFF).]
The utility must provide updated maps to the appropriate entities whenever changes occur in the
configuration of the utility's main supply underground facilities.
[PL 1991, c. 437, §4 (NEW); PL 1991, c. 437, §12 (AFF).]
4. Operator response to notice locating facilities. An underground facility operator shall, upon
receipt of the notice provided for in subsection 3-A, advise the excavator of the location and size of the
operator's underground facilities and all underground facilities used in furnishing electric or gas service
that are connected to the operator's facilities, located in the public way and known to the operator in the
proposed excavation area by marking the location of the facilities with stakes, paint or by other
identifiable markings. The marking must identify a strip of land not more than 3 feet wide directly over
the facility or a strip of land extending not more than 1 1/2 feet on each side of the underground facility
and must indicate the depth of the underground facility, if known. The underground facility operator
shall complete this marking no later than 2 full business days after receipt of the notice. After the
underground facility operator has marked the location of that operator's underground facilities in the
proposed excavation area, the excavator is responsible for maintaining the markings at the location,
unless the excavator requests remarking at the location due to obliteration, destruction or other removal
of the markings. The underground facility operator shall remark the location within one business day
following the receipt of a request to remark.
If the proposed excavation is of such length or size that the underground facility operator advises the
excavator that the operator can not reasonably respond with respect to all the operator's underground
facilities within 2 full business days, the excavator shall notify the operator of the specific location in

which excavation will first be made and the operator shall respond with respect to the operator's
underground facilities in that location within 2 full business days and for the remaining facilities within
a reasonable time thereafter.
The system may adopt rules requiring, under certain circumstances, face-to-face meetings between
excavators and underground facility operators.
[PL 2001, c. 577, §6 (AMD).]
4-A. Alternative notice by certain excavators.
[PL 1999, c. 718, §4 (RP).]
4-B. Modification and revocation of clearance.
[PL 1999, c. 718, §4 (RP).]
4-C. Excavation methods. An excavator may not use mechanical means of excavation when
excavating within 18 inches of any marked underground facilities until the underground facilities have
been exposed, except that mechanical means may be used, as necessary, for initial penetration and
removal of pavement, rock or other materials requiring use of mechanical means of excavation. Once
the underground facilities have been exposed, further excavation must be performed employing
reasonable precautions to avoid damage to the underground facilities, including, but not limited to, any
substantial weakening of structural or lateral support of the facilities or penetration or destruction of
the facilities or their protective coatings. For the purposes of this subsection, "mechanical means of
excavation" means excavation using any device or tool powered by an engine except air vacuum
methods of excavation.
[PL 1999, c. 718, §5 (NEW).]
4-D. Abandoned or inactive facilities. Beginning on the date an owner or operator of
underground facilities is required by the Public Utilities Commission to implement electronic mapping,
the owner or operator shall indicate the existence of facilities abandoned or inactive after that date on
its electronic mapping system and shall notify an excavator when abandoned or inactive facilities exist
in the area of an excavation. If an owner or operator of an underground facility does not maintain an
electronic mapping system, the owner or operator shall notify the excavator if the operator is aware of
abandoned or inactive facilities in the area of an excavation.
[PL 2001, c. 577, §7 (NEW).]
5. Emergency excavations. In an emergency, an excavator may commence an excavation after
having taken all reasonable steps, consistent with the emergency, to notify the system and to mark the
excavation site consistent with subsection 3, paragraph C. The excavator shall commence an
excavation undertaken pursuant to this subsection within 12 hours after providing notice to the system,
or as soon thereafter as can safely be accomplished. Each underground facility operator shall locate its
underground facilities as soon as reasonably possible after receiving notification of an emergency
excavation whether or not the excavation has begun.
[PL 2011, c. 72, §2 (AMD).]
5-A. Notice of damage. When an underground facility is damaged, the excavator causing the
damage shall immediately notify the affected underground facility operator. The excavator may not
backfill an excavation where damage has occurred without first receiving permission from the affected
operator.
[PL 1991, c. 437, §6 (NEW); PL 1991, c. 437, §12 (AFF).]
5-B. Exemption; commercial forestry operations. A person is exempt from the notice
requirements of subsection 3 for any excavation undertaken in conjunction with a commercial timber
harvesting activity as long as the excavation:
A. Is not conducted in a public place, on public land or within a public easement, including, but
not limited to, a public way; [PL 1999, c. 718, §7 (NEW).]

B. Is not conducted within 100 feet of an easement or land owned by an underground facility
operator; [PL 1999, c. 718, §7 (NEW).]
C. Is not conducted within 100 feet of an underground facility; and [PL 1999, c. 718, §7 (NEW).]
D. Does not involve the use of explosives. [PL 1999, c. 718, §7 (NEW).]
[PL 2011, c. 72, §3 (AMD).]
5-C. Exemptions; written agreements. A person undertaking an excavation in conjunction with
a commercial timber harvesting activity within 100 feet of an underground facility or on an easement
or land owned by an underground facility operator or within 100 feet of an easement or land owned by
an underground facility operator is exempt from the notice requirements of subsection 3 and from the
provisions of subsection 4-C if the person:
A. Has contacted the system to determine the identity of all underground facility operators that
own or operate underground facilities within the area of the excavation; [PL 1999, c. 718, §7
(NEW).]
B. Has entered into written agreements with all underground facility operators owning or operating
facilities in the area of the excavation and with all persons owning the land on which the excavation
occurs; and [PL 1999, c. 718, §7 (NEW).]
C. Undertakes the excavation in accordance with the terms of the written agreements. [PL 1999,
c. 718, §7 (NEW).]
[PL 1999, c. 718, §7 (NEW).]
5-D. Exemption; cemeteries. An excavator is exempt from the notice requirements of subsection
3 and subsection 10-A for any excavation undertaken within the boundaries of a cemetery if the
following procedures are followed.
A. The person responsible for operating the cemetery shall provide notice pursuant to subsections
3 and 10-A identifying the entire cemetery as a potential excavation site. Owners and operators of
underground facilities within the cemetery shall mark those facilities in accordance with
subsections 4 and 10-A, as applicable. Thereafter, the person responsible for operating the
cemetery shall maintain sufficient records or markings to identify the location of underground
facilities within the cemetery. [PL 2011, c. 588, §5 (AMD).]
B. The person responsible for operating the cemetery shall identify the location of any underground
facilities within the excavation area and take appropriate action to avoid damage to the facilities.
[PL 2001, c. 577, §8 (NEW).]
[PL 2011, c. 588, §5 (AMD).]
5-E. Shoulder-grading procedure. An excavator that is a licensing authority as defined by Title
35-A, section 2502, subsection 1 or its designee may be exempt from subsection 4-C for any excavation
that is shoulder-grading activity if the excavator complies with this subsection. If an excavator chooses
to excavate under this subsection, all owners of underground facilities within the area of excavation
must comply with this subsection.
A. The excavator shall provide notice as required by subsections 3 and 10-A and the owner or
operator of underground facilities shall respond as required by subsections 4 and 10-A. [PL 2011,
c. 588, §6 (AMD).]
B. The excavator shall contact each owner or operator of underground facilities within the area of
proposed shoulder-grading activity and describe the scope of its proposed shoulder-grading
activity, including the anticipated depth of grading. [PL 2001, c. 577, §8 (NEW).]
C. The owner or operator of each underground facility shall within 3 business days determine and
notify the excavator whether the depth of its facility is sufficient to avoid damage. [PL 2001, c.
577, §8 (NEW).]

D. After receipt of notice provided pursuant to paragraph C, the excavator may commence its
shoulder-grading activity in a manner that does not disturb the facilities indicated by the owners or
operators of the underground facilities or, if a facility is located at an insufficient depth to allow the
proposed shoulder-grading activity, prior to the shoulder-grading activity the licensing authority
may require the owner or operator of the underground facility to lower or otherwise move its facility
in accordance with applicable law and the terms of its license. [PL 2001, c. 577, §8 (NEW).]
[PL 2011, c. 588, §6 (AMD).]
5-F. Water well construction; rulemaking. The Public Utilities Commission shall by rule
establish notice requirements for excavation associated with drinking water well construction. In
establishing the rule, the commission shall consider:
A. Whether notice requirements established in the rule should be limited to the drilling of a well
or should also apply to other excavation associated with well construction activities, such as
trenching for installation of pipes and equipment; [PL 2003, c. 373, §3 (NEW).]
B. Whether notice requirements established in the rule should be based on factors such as
geographic location, population density or other criteria bearing on the efficiency and effectiveness
of the notification process and any offsetting public safety risks; [PL 2003, c. 373, §3 (NEW).]
C. Whether the amount of time required for notice prior to excavation should be reduced; and [PL
2003, c. 373, §3 (NEW).]
D. Any notice requirements associated with drinking water well construction that the commission
determines appropriate. [PL 2003, c. 373, §3 (NEW).]
Rules adopted pursuant to this subsection are major substantive rules as defined in Title 5, chapter 375,
subchapter 2-A.
[PL 2003, c. 373, §3 (NEW).]
5-G. Alternative notice requirement procedures for excavations; rulemaking. The Public
Utilities Commission may by rule extend alternative notice requirements established for excavation
associated with drinking water well construction pursuant to subsection 5-F to other types of
excavation. Rules adopted under this subsection are major substantive rules as defined in Title 5,
chapter 375, subchapter 2-A.
[PL 2005, c. 334, §1 (NEW).]
5-H. Newly installed underground facilities in active excavation areas; rulemaking. The
Public Utilities Commission shall by rule establish procedures to reduce the incidence of damage to
newly installed underground facilities in active excavation areas as defined by the commission by rule.
In establishing the rule, the commission may consider adopting additional requirements for excavators
or operators, including renotification and marking requirements and system notification procedures.
Rules adopted pursuant to this subsection are major substantive rules as defined in Title 5, chapter 375,
subchapter 2-A.
[PL 2005, c. 334, §1 (NEW).]
5-I. Exemption; quarries and borrow pits. An excavator may undertake an excavation within a
quarry or borrow pit in accordance with this subsection.
A. As used in this subsection, unless the context otherwise indicates, the following terms have the
following meanings.
(1) "Lawfully expanded after March 1, 2011" means an expansion of a quarry or borrow pit
after March 1, 2011:
(a) That requires an authorization, license, permit or variance issued by the Department of
Environmental Protection pursuant to Title 38, chapter 3, article 6, 7 or 8-A or by the
former Maine Land Use Regulation Commission or the Maine Land Use Planning

Commission under Title 12, chapter 206-A and for which a valid authorization, license,
permit or variance has been issued; or
(b) That requires a filing of a notice of intent to comply pursuant to Title 38, chapter 3,
article 7 or 8-A and a complete filing has been made.
(2) "Lawfully located on March 1, 2011" means that on March 1, 2011 the quarry or borrow
pit existed and:
(a) The owner or operator had been issued all authorizations, licenses, permits or variances
by the Department of Environmental Protection pursuant to Title 38, chapter 3, article 6, 7
or 8-A or by the former Maine Land Use Regulation Commission under Title 12, chapter
206-A necessary to operate that quarry or borrow pit; and
(b) The quarry or borrow pit was in compliance with any applicable requirements of Title
38, chapter 3, article 7 or 8-A or with any applicable land use district standards of the
former Maine Land Use Regulation Commission adopted under Title 12, chapter 206-A.
(3) "Lawfully located after March 1, 2011" means that the quarry or borrow pit is established
after March 1, 2011 and:
(a) The owner or operator possesses all authorizations, licenses, permits or variances
issued by the Department of Environmental Protection pursuant to Title 38, chapter 3,
article 6, 7 or 8-A or by the former Maine Land Use Regulation Commission or the Maine
Land Use Planning Commission under Title 12, chapter 206-A necessary to operate that
quarry or borrow pit; and
(b) The quarry or borrow pit is in compliance with the requirements of Title 38, chapter 3,
article 7 or 8-A or with applicable land use district standards of the former Maine Land
Use Regulation Commission or the Maine Land Use Planning Commission adopted under
Title 12, chapter 206-A.
(4) "Quarry" has the same meaning as in Title 38, section 490-W, subsection 17. [PL 2013,
c. 405, Pt. B, §4 (AMD).]
B. Except as provided in paragraph C, an excavator is exempt from the notice requirements of
subsection 3 and subsection 10-A when undertaking an excavation within a quarry or borrow pit
lawfully located on March 1, 2011. [PL 2011, c. 588, §7 (AMD).]
C. An excavator undertaking an excavation within a quarry or borrow pit lawfully located after
March 1, 2011 or lawfully expanded after March 1, 2011 is governed by the following.
(1) The owner or operator of the quarry or borrow pit shall provide notice pursuant to
subsections 3 and 10-A identifying the entire area potentially subject to excavation.
(2) Owners and operators of underground facilities in the area identified pursuant to
subparagraph (1) shall mark those facilities in accordance with subsections 4 and 10-A, as
applicable. Thereafter, the owner or operator of the quarry or borrow pit shall maintain
sufficient records or markings to identify the location of underground facilities within the area
identified pursuant to subparagraph (1) and an excavator undertaking an excavation in that area
is exempt from any further notice requirements under subsection 3 and subsection 10-A.
(3) The owner or operator of the quarry or borrow pit shall take appropriate action to avoid
damage to the underground facilities identified pursuant to subparagraph (2). [PL 2011, c.
588, §7 (AMD).]
[PL 2013, c. 405, Pt. B, §4 (AMD).]
5-J. Unpaved public road grading procedure. A person may undertake qualified grading
activity in accordance with this subsection.

A. As used in this subsection, unless the context otherwise indicates, the following terms have the
following meanings.
(1) "Approved road" means a public way, or portion of a public way, on which a person may
undertake qualified grading activity in accordance with this subsection.
(2) "Licensing authority" has the same meaning as in Title 35-A, section 2502, subsection 1.
(3) "Qualified grading activity" means maintenance work that involves the use of suitable
equipment with a blade to level or otherwise maintain the sand, gravel, sod or other surface of
an unpaved public way.
(4) "Requested road" means a public way, or portion of a public way, on which a licensing
authority requests authority to conduct qualified grading activity under this subsection.
(5) "Shallow-depth facilities" means underground facilities located at an insufficient depth to
allow qualified grading activity. [PL 2011, c. 72, §5 (NEW).]
B. A licensing authority shall provide notice identifying the requested road and the intended depth
of the qualified grading activity to the system and to persons who are not members of the system
who own or operate underground facilities in the requested road. [PL 2011, c. 72, §5 (NEW).]
C. Upon receiving notice pursuant to paragraph B, the system shall notify immediately all members
whose underground facilities may be affected in accordance with subsection 3-A. [PL 2011, c.
72, §5 (NEW).]
D. The owner or operator of each underground facility within the requested road shall within 3
business days of receiving notice advise the licensing authority of the location and size of the
owner's or operator's underground facilities and all underground facilities used in furnishing electric
or gas service that are connected to the owner's or operator's facilities and known to the owner or
operator that are located in the requested road and whether the depth of the facilities is sufficient to
avoid damage by qualified grading activity. [PL 2011, c. 72, §5 (NEW).]
E. After waiting 3 business days of providing notice under paragraph B, the licensing authority
may file with the Public Utilities Commission a notice of intent to conduct qualified grading activity
on the requested road. Upon filing the notice of intent, the requested road becomes an approved
road and any person may undertake qualified grading activity on the approved road at any time
during the 12 months following filing of the notice of intent and is not required to provide any
further notices under this section during those 12 months. If the licensing authority has been
notified pursuant to paragraph D that there are shallow-depth facilities within the requested road,
any qualified grading activity must be conducted in a manner that does not disturb the shallow-
depth facilities. The licensing authority may require the owner or operator of the shallow-depth
facilities to lower or otherwise move its facility in accordance with applicable law and the terms of
its license. [PL 2011, c. 72, §5 (NEW).]
[PL 2011, c. 72, §5 (NEW).]
5-K. Exemption; unpaved private road grading. A person is exempt from the requirements of
this section for any grading activities undertaken on private roads that meet the following criteria:
A. The grading activities are limited to the shaping, maintaining or scraping of a road surface or
road shoulder to allow for proper drainage; and [PL 2011, c. 588, §8 (NEW).]
B. The depth of the grading activities is no deeper than 6 inches as measured from the road surface
or shoulder of the road surface prior to the commencement of those grading activities. [PL 2011,
c. 588, §8 (NEW).]
[PL 2011, c. 588, §8 (NEW).]
6. Liability of excavator. If an excavator complies with subsection 3 and if information pursuant
to subsections 3-A and 4 is not provided within the time specified or if the information provided fails

to identify the location of the underground facilities in accordance with subsection 4 then an excavator
damaging or injuring underground facilities is not liable for any damage or injury caused by the
excavation, except on proof of negligence.
[PL 1999, c. 718, §8 (AMD).]
6-A. Forfeitures.
[PL 1999, c. 718, §9 (RP).]
6-B. Failure to notify. An excavation that is made without the excavator providing any or all of
the notices required by this section that results in any damage to an underground facility or facilities is
prima facie evidence in any civil or administrative proceeding that the damage was caused by the
negligence of the excavator.
[PL 1999, c. 718, §10 (AMD).]
6-C. Penalties. In an adjudicatory proceeding, the Public Utilities Commission may, in
accordance with this subsection, impose an administrative penalty on any person who violates this
subsection. The administrative penalty may not exceed $1,000, except that, if the person has been
found in violation of this subsection within the prior 12 months, the administrative penalty may not
exceed $10,000. Administrative penalties imposed pursuant to this subsection are in addition to any
other remedies or forfeitures provided by law and any liability that may result from the act or omission
constituting the violation. Before imposing any penalties under this subsection, the commission shall
consider evidence of the record of the violator, including, to the extent applicable, the number of
successful excavations undertaken by the violator or the number of locations successfully marked by
the violator during the prior 12 months. The commission may require a person who violates any
provision of this section to participate, at the expense of the violator, in an educational program
developed and conducted by the system.
The Public Utilities Commission may impose administrative penalties for any of the following
violations:
A. Failure of an excavator to give notice of an excavation as required under subsection 3, except
to the extent the excavator is exempt from the provisions of subsection 3 pursuant to other
provisions of this section; [PL 1999, c. 718, §11 (NEW).]
B. Excavation by an excavator in a reckless or negligent manner that poses a threat to an
underground facility; [PL 1999, c. 718, §11 (NEW).]
C. Excavation by an excavator that does not comply with the requirements of subsection 4-C,
except to the extent the excavator is exempt from the provisions of subsection 4-C pursuant to
subsection 5-C; [RR 1999, c. 2, §27 (COR).]
D. Failure of an underground facility operator to mark the location of the operator's underground
facilities within the time limits required by subsection 4; [PL 2001, c. 577, §9 (AMD).]
E. Marking by an underground facility operator of the location of an underground facility in a
reckless or negligent manner; or [PL 2001, c. 577, §10 (AMD).]
F. Failure of an excavator to comply with the requirements of subsection 5-C, 5-D, 5-E, 5-I or 5-J.
[PL 2011, c. 72, §6 (AMD).]
The commission shall establish by rule standards for when and at what level penalties must be assessed
under this subsection. Rules adopted under this subsection are major substantive rules as defined in
Title 5, chapter 375, subchapter 2-A.
[PL 2019, c. 592, §2 (AMD).]
6-D. Penalty payment plan. The Public Utilities Commission shall allow a qualified person who
is assessed an administrative penalty under subsection 6-C to pay the penalty through a payment plan.
For purposes of this subsection, "qualified person" means a person who demonstrates to the Public

Utilities Commission that the person is unable to pay the penalty in full or that paying the penalty in
full will cause undue financial hardship. The Public Utilities Commission shall establish a schedule of
payments over time that allows the person to pay the fine within that person's financial means.
[PL 2011, c. 72, §7 (NEW).]
7. Imprudent action. Compliance with this section does not excuse a person from acting in a
careful and prudent manner nor does compliance with this section excuse a person from liability for
damage or injury for failure to so act.
[PL 1979, c. 362, §2 (NEW).]
8. Effect on existing statutes or ordinances. Nothing contained in this section shall be construed
to effect or impair any statute or ordinance requiring permits for excavation in a street or public
highway.
[PL 1979, c. 362, §2 (NEW).]
9. Exceptions.
[PL 1991, c. 437, §9 (RP); PL 1991, c. 437, §12 (AFF).]
10. Further notice requirements.
[PL 2011, c. 588, §10 (RP).]
10-A. Further notice requirements. The following provisions govern excavations in areas where
there are underground facilities owned or operated by a person who is not an underground facility
operator and who is not a voluntary member of the system established under subsection 1-A.
A. In addition to other notice requirements under this section and except for an employee with
respect to that employee's employer's facility, an excavator shall notify any person who is not a
member of the system and has underground facilities in the area of the proposed excavation. This
notice must be in writing or in person. [PL 2011, c. 588, §11 (NEW).]
B. If the underground facilities are located on private property, provide service to a single-family
residence and are owned and operated by the owner of that property:
(1) That landowner may mark the underground facilities in accordance with paragraph D;
(2) The excavator may wait 3 business days from the date of notification to commence the
excavation or may commence the excavation upon notification;
(3) If the excavator waits 3 business days from the date of notification or until after the
underground facilities are marked, if sooner, to commence excavation or if the markings made
by the landowner pursuant to subparagraph (1) fail to identify the location of the underground
facilities in accordance with paragraph D, an excavator damaging or injuring underground
facilities is not liable for any damage or injury caused by the excavation, except on proof of
negligence; and
(4) If the excavator does not wait until the underground facilities are marked or 3 business
days from the date of notification to commence excavation, whichever occurs earlier, the
excavator is liable for all damages to the underground facilities as a result of the excavation.
[PL 2013, c. 557, §2 (AMD).]
C. If the underground facilities are located on private or public land and are owned and operated
by a person other than the owner of the property where the excavation is to occur:
(1) The person who owns or operates the underground facilities shall mark the underground
facilities in accordance with paragraph D; and
(2) The excavator shall wait until the underground facilities are marked or 3 business days
from the date of notification, whichever occurs earlier, before commencing the excavation.

If an excavator complies with paragraph A and subparagraph (2) and if information pursuant to
paragraph D is not provided within the time specified or if the information provided does not
identify the location of the underground facilities in accordance with paragraph D, an excavator
damaging or injuring underground facilities is not liable for any damage or injury caused by the
excavation, except on proof of negligence. [PL 2011, c. 588, §11 (NEW).]
D. A person who marks underground facilities under this subsection shall mark the location and
size of the underground facilities in the proposed excavation area by marking the location of the
facilities with stakes, with paint or by any other identifiable markings within 36 inches horizontally
from the exterior sides of the underground facilities and if the depth is known the depth of the
underground facilities. The person providing information shall respond no later than 2 full business
days after receipt of the notice. It is the responsibility of the excavator to maintain those location
markings until the excavations are completed. [PL 2011, c. 588, §11 (NEW).]
[PL 2013, c. 557, §2 (AMD).]
10-B. Calling 9-1-1. If contact with or damage to an underground pipe or another underground
facility results in the escape of any natural gas or other hazardous substance or material regulated by
the United States Department of Transportation, Pipeline and Hazardous Materials Safety
Administration, the excavator shall immediately report the contact or damage by calling 9-1-1.
[PL 2019, c. 322, §1 (NEW).]
11. Enforcement. The Public Utilities Commission may adopt procedures necessary and
appropriate to gather information and hear and resolve complaints concerning failure to comply with
the provisions of this section.
[PL 1999, c. 718, §12 (RPR).]
12. Injunctions; costs. The owner or operator of an underground facility may request that the
Public Utilities Commission issue a cease and desist order to prevent a person from undertaking an
excavation that may result in damage to the underground facility. The Public Utilities Commission
may issue a cease and desist order if the commission determines that the excavation or proposed
excavation:
A. Is being conducted or is likely to be conducted in a negligent or unsafe manner; and [PL 1997,
c. 229, §2 (NEW).]
B. Is causing or is likely to cause damage to the underground facility. [PL 1997, c. 229, §2
(NEW).]
If the owner or operator prevails in an action brought pursuant to this subsection, the owner or operator
is entitled to an award of the costs of bringing the action, including reasonable attorney's fees.
[PL 2003, c. 505, §4 (AMD).]
13. Rules. The Public Utilities Commission may adopt rules necessary to implement this section.
Except as otherwise specified in this section, rules adopted under this section are major substantive
rules as defined in Title 5, chapter 375, subchapter 2-A.
[PL 2005, c. 334, §3 (NEW).]
14. Discovered facilities. When an underground facility is discovered during an excavation and
the location of that facility was, prior to the discovery, unknown or unclear to the underground facility
operator, the Public Utilities Commission may direct that operator to determine and map the location
of the facility for a reasonable distance, as determined by the commission, from the point of discovery.
[PL 2005, c. 334, §3 (NEW).]

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