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LAND MODIFICATION PERMIT (Grading Permit)

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MASON COUNTY
PERMIT NO.___________
DEPARTMENT OF COMMUNITY DEVELOPMENT
BUILDING • PLANNING • FIRE MARSHAL
WWW.CO.MASON.WA.US (360) 427-9670 Shelton ext.352
Mason County Bldg. 8, (360) 275-4467 Belfair ext. 352
615 W. Alder Street, Shelton, WA 98584 (360) 482-5269 Elma ext. 352
LAND MODIFICATION PERMIT (Grading Permit)
OWNER INFORMATION:
NAME:_______________________________________
MAILING ADDRESS:__________________________
CITY:______________ STATE:_______ ZIP:________
PHONE:_______________ CELL:_________________
EMAIL:_______________________________________
PARCEL INFORMATION:
PARCEL NUMBER (12 DIGIT NUMBER) ______________________
_____________________ FIRE DISTRICT___________
LEGAL DESCRIPTION(ABBREVIATED) :_____________________________________________________________________
SITE ADDRESS_______________________________________________________CITY________________________________
DIRECTIONS TO SITE ADDRESS
IS PROPERTY WITHIN 200 FT:
SALTWATER ⎕ LAKE ⎕ RIVER/CREEK ⎕ POND ⎕ WETLAND ⎕ SEASONAL RUNOFF ⎕ STREAM ⎕
DOES PROPERTY HAVE SLOPE(S) WITHIN 300 FT OF THE PROJECT- GREATER THAN 14% YES⎕ NO ⎕
WILL TIMBER BE CUT AND SOLD IN PARCEL PREPARATION ? YES ⎕ NO ⎕
TOTAL SIZE OF PARCEL ______________ ACRES /SQ FT SIZE OF AREA TO BE EFFECTED_________ ACRES/SQ FT
ESTIMATED AMOUNTY OF CUBIC YARDS________________________
DOES THE SITE HAVE SLOPES 14% OR GREATER YES⎕ NO⎕
DESCRIBE SCOPE OF WORK
OWNER / BUILDER acknowledges submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner, owners legal representative, or contractor. I further
declare that I am entitled to receive this permit and to do the work as proposed. I have obtained permission from all the necessary
parties, including any easement holder or parties of interest regarding this project. The owner or authorized agent represents that the
information provided is accurate and grants employees of Mason County access to the above described property and structure(s) for
review and inspection. This permit/application becomes null & void if work or authorized construction is not commenced within 180
days or if construction work is suspended for a period of 180 days. PROOF OF CONTINUATION OF WORK IS BY MEANS OF
INSPECTION. INACTIVITY OF THIS PERMIT APPLICATION OF 180 DAYS WILL INVALIDATE THE APPLICATION.
X__________________________________________ _______________________________
Signature of Applicant Date
X__________________________________________ OWNER / REPRESENTATIVE /CONTRACTOR
Print Name (CIRCLE TO INDICATE)
CONTRACTOR INFORMATION:
NAME:_________________________________________
MAILING ADDRESS:_____________________________
CITY:____________ STATE:_________ ZIP:_________
PHONE:________________ CELL: _________________
EMAIL :________________________________________
L&I REG #_____________________ EXP. ___/___/___
TYPE OF JOB:
EXCAVATION
⎕
FILLING
⎕
GRADING
⎕
CUTTING
⎕
OTHER
⎕
WILL FILL BE BROUGHT ON SITE ? IF YES, SITE ADDRESS:___________________________________________________
WILL EXCAVATED MATERIAL BE TAKEN OFF SITE ? IF YES, SITE ADDRESS: ___________________________________
DOES FILL CONTAIN POTENTIAL HAZARDOUS MATERIALS? YES
⎕ NO ⎕
HAS A SOILS REPORT BEEN COMPLETED ON SITE? IF YES, INCLUDE A COPY. YES
⎕ NO ⎕
WILL PROPSAL RESULT IN REDIRECTION OF ANY SURFACE WWATER RUNOFF ? YES
⎕ NO ⎕
WILL WORK ALTER WHERE STORMWATER OF GROUND WATER ENTERS OR EXISTS THE SITE? YES ⎕ NO ⎕
WILL QUALITY, QUANTITY OR VELOCITY OF STORM/GROUND WATER BE ALTERED? YES ⎕ NO⎕
WILL THE RUNOFF BE COLLETED/CONTROLLED BY INTERCEPTORS, CURTAIN DRAINS OR OTHER DEVICES? YES ⎕ NO ⎕
WILL THE LAND BE REPLANTED UPON COMPLETION? YES ⎕ NO ⎕
WILL THE PROPOSAL RESULT IN SLOPES STEEPER THAN THOSE CURRENTLY ON SITE? YES
⎕ NO ⎕
IS THE SITE WITHIN 200 FT OF A DESIGNATED SHORELINE OR A WETLAND? YES
⎕ NO ⎕
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Chapter 14.44
EXCAVATION AND GRADING*
Sections:
14.44.010
14.44.020
14.44.030
14.44.040
14.44.050
14.44.060
14.44.070
14.44.080
14.44.090
14.44.100
14.44.110
14.44.
120
14.44.140
14.44.
150
14.44.160
14.44.170
14.44.180
14.44.190
14.44.200
14.44.210
14.44.220
14.44.230
14.44.240
Purpose.
Scope.
Definitions.
Hazards to
be
eliminated.
Permits- Required when.
Grading permit- Requirements
generally.
Grading permit- Application and
review
process.
Grading designation.
Engineered grading requirements.
Soils engineering report.
Engineering geology report.
Regular grading requirements.
Permit issuance.
Grading permit fees.
Bonds.
Cuts.
Fills.
Setbacks.
Drainage and terracing.
Erosion control.
Grading inspection.
Completion of work.
Enforcement and penalties.
14.44.010 Purpose.
The
purpose
of
this chapter
is
to safeguard life,
limb, property
and
the public welfare by regulating
grading
on
private property within
Mason
County.
(Ord. No. 44-10, 5-25-2010)
14.44.020
Scope.
This code sets forth rules
and
regulations
to
con-
trol excavation, grading
and
earthwork construction,
including
fills
and
embankments; establishes the admin-
istrative procedure for issuance
of
permits; provides for
approval
of
plans and inspection
of
grading construc-
tion;
and
provides coordination
of
the efforts
of
the
department
of
community development, building de-
partment
and department
of
public works in permit-
ting development
in
the county.
(Ord.
No
. 44-10, 5-25-2010)
*Editor's
note-Ord
. No. 44-10, adopted May
25,
2010, amended
Chapter
14
.
44
in
its entirety
to
read
as
herein set out. Former Chapter
14.44 pertained
to
the same subject matter
and
derived from
Res.
141-96,
1996;
and Ord.
64-07,
2007.
14.44.030
14.44.030
Definitions.
For the purposes
of
this chapter the definitions
listed hereunder shall be construed as specified in this
section.
"Approval" means the proposed work
or
com-
pleted work conforms to this chapter in the opinion
of
the official.
"As-graded" means the extent
of
surface condi-
tions on completion
of
grading.
"Bedrock" means in-place solid rock.
"Bench" means relatively level step excavated into
earth or rock material as
part
of
the placement
of
stable
fill.
"Borrow" means earth material acquired from
an
-
other location for use in grading
on
a site.
"Civil engineer" means a professional engineer reg-
istered in the
State
of
Washington to practice in the
field
of
civil engineering.
"Civil engineering" means the application
of
knowl-
edge
of
the forces
of
nature, principles
of
mechanics
and the properties
of
materials to the evaluation, de-
sign and construction
of
civil works.
"Compaction" means the densification
of
a fill by
mechanical means.
"Critical areas" means areas where unstable soils,
steep slopes, streams, wetlands, ponds, freshwater and
saltwater shorelines, and floodplains are present.
"Earth material" means any rock, natural soil
or
fill
or
any combination thereof.
"Engineering geologist" means a geologist experi-
enced in engineering geology
in
the State
of
Washing-
ton.
"Engineering
geology" means the application
of
geologic knowledge and principles in the investigation
and evaluation
of
naturally occurring rock and soil for
use in the design
of
civil works.
"Erosion" means the wearing away
of
the ground
surface
as
a result
of
the movement
of
wind, water or
ice.
"Excavation" means the mechanical removal
of
earth material.
"Existing grade" means the grade prior to grading.
"Fill" means a deposit
of
earth material placed by
artificial means.
"Finish grade" means the final grade
of
the site
which conforms to the approved plan.
"Geo technical engineer."
See "Soils engineer."
408.9
(Mason County Supp. No. 22, 8-10)
14.44.030
"Grade" means the vertical location
of
the ground
surface.
"Grading" means any excavating
or
filling
or
com-
bination thereof.
"Key" means a designed compacted
fill
placed in a
trench excavated in earth material beneath the toe
of
a
proposed fill slope.
"Official" means the director
of
the Mason County
department
of
community development or his quali-
fied representative, or agent.
"Professional inspection" means the inspection
re-
quired
by
this code to be performed by the civil engi-
neer, soils engineer or engineering geologist. Such in-
spections include that performed by persons supervised
by
such engineers
or
geologists and shall
be
sufficient to
form an opinion relating to the conduct
of
the work.
"Rough grade" means the stage at which the grade
approximately conforms to the approved plan.
"Site" means any lot or parcel
of
land
or
contigu-
ous combination thereof, under the same ownership,
where grading
is
performed
or
permitted.
"Slope" means an inclined ground surface, the in-
clination
of
which
is
expressed
as
a ratio
of
horizontal
distance to vertical distance.
"Soil" means naturally occurring superficial depos-
its overlying bedrock.
"Soils engineer (geotechnical engineer)" means a
civil engineer experienced in the practice
of
soils engi-
neering (geotechnical engineering) in the State
of
Wash-
ington.
"Soils engineering (geotechnical
engineering)"
means the application
of
the principles
of
soils mechan-
ics
in the investigation, evaluation and design
of
civil
works involving the use
of
earth materials and the
inspection
or
testing
of
the construction thereof.
"Terrace" means a relatively level step constructed
in the face
of
a graded slope surface for drainage and
maintenance purposes.
(Ord.
No.
44-10, 5-25-2010)
14.44.040 Hazards
to
be
eliminated.
Whenever the official determines that any existing
excavation
or
embankment
or
fill
on
private property
has become a hazard to life and limb, or endangers
property,
or
adversely affects the safety, use or stability
of
a public way
or
drainage channel, the owner
of
the
property upon which the excavation
or
fill
is
located, or
other person
or
agent in control
of
the property, upon
receipt
of
notice in writing from the official, shall within
the period specified therein repair
or
eliminate such
excavation
or
embankment so
as
to eliminate the haz-
ard and be in conformance with the requirements
of
this chapter.
(Ord. No. 44-10, 5-25-2010)
14.44.050 Permits-Required
when.
(a) Permits Required. Except as specified in sub-
section (b)
of
this section, no person shall do any
grading without first having obtained a grading permit
from the official. A grading permit shall be required for
a project involving excavation
or
fill
that totals two
hundred
or
more cubic yards
of
graded material and
is
not exempted
below.
Grading activities not requiring a
grading permit shall comply with the standards listed
in Sections 14.44.170 through 14.44.210.
(b) Exempted Work. A grading permit
is
not re-
quired for the following:
(1)
When approved
by
the official, grading in
an
isolated, self-contained area if there
is
no danger
or
hazard to adjacent private/public property
or
other
improvements;
(2)
An
excavation below finished grade for base-
ments and footings
of
a building, retaining wall
or
other structure authorized
by
a valid building permit.
This shall
not
exempt any fill made with the material
from such excavation or exempt any excavation having
an unsupported height greater than
five
feet after the
completion
of
such structure;
(3)
An
excavation which: (a)
is
less
than two feet
in depth,
or
(b) which does not create a cut slope greater
than
five
feet in height and steeper than one
and
one-
half horizontal to one vertical;
(
4)
A fill less than one foot in depth and placed
on
natural terrain with a slope flatter than
five
horizontal
to one vertical,
or
less than three feet in depth,
not
intended to support structures, which does
not
exceed
two hundred cubic yards on any one lot and does
not
obstruct a drainage course;
(5)
Cemetery graves;
(6)
Refuse disposal sites controlled by other regu-
lations;
(7)
Excavations for wells
or
tunnels
or
utilities;
I
(8)
Mining, quarrying, excavating, processing,
stockpiling
of
rock, sand, gravel, aggregate
or
clay
where established and provided for
by
law,
provided
(Mason County Supp. No.
22,
8-10)
408.10
such
operations
do
not
affect the lateral
support
or
increase the stresses in
or
pressure
upon
any adjacent
or
contiguous property;
(9)
Exploratory
excavations
under
the direction
of
a soil engineer
or
engineering geologist;
(10)
Grading
on
public rights-of-way
done
by
or
under
the supervision
or
construction control
of
a
public agency
that
assumes full responsibility for
the
work;
(11)
Grading
necessary for agricultural
opera-
tions, unless it causes hazards to property
or
public
road,
or
obstructs
a watercourse
or
drainage;
(12) Maintenance
of
existing fire breaks
and
roads;
(13) Performance
of
emergency work necessary
to protect life
and
property when urgent necessity arises.
The
official shall
be
notified promptly
and
the
person
performing
the
work
shall apply for a permit within
ten
calendar
days.
(14)
Grading
associated with a logging
operation
under
a
current
forest practice permit.
Exemption
from the permit requirements
of
this
chapter shall
not
be
deemed to
grant
authorization
for
any
other
work
to
be
done in any
manner
in violation
of
the
provisions
of
this chapter
or
any other laws
or
ordinances
of
Mason
County.
(Ord. No. 44-10, 5-25-2010)
14.44.060
Grading permit- Requirements
generally.
(a) Except as exempted in Section 14.44.050,
no
person shall
do
any
grading
without
first
obtaining
a
grading
permit
from
the official. A separate
permit
shall
be
obtained
for each site,
and
may cover
both
excavations
and
fills.
(b) Application.
The
Mason
County
grading per-
mit
shall be
used
as
part
of
the information
submitted
on
a
proposed
grading project
and
included
on
this
form shall
be
the
estimated quantities
of
work involved
and
other
required information.
(Ord. No. 44-10, 5-25-2010)
14.44.070
Grading permit- Application and
review process.
The
following forms must be submitted
to
the
official
at
the time
of
application:
(1)
Grading
permit
application completed
and
signed by
the
property
owner
or
agent;
(2)
Grading
plan, if applicable
to
the project, show-
ing the
required
information as stated
in
Sections
14.44.070
14.44.090, 14.44.100
and
14.44.110
or
14.44.120.
If
a
proposed site involves
five
thousand
cubic yards
or
more
of
grading
or
is located
in
or
adjacent
to
a land-
slide hazard critical
area
in
Mason
County, a grading
plan must be prepared and stamped by a civil
eng
ineer;
other geotechnical investigations, soil engineering re-
port
or
engineering geotechnical report,
and
erosion
control plan may be required based
upon
the evalua-
tion
of
the proposal
by
the official;
(3) Environmental checklist shall
be
submitted
when: (a) more
than
five hundred cubic yards
of
exca-
vation
and/
or
fill
is
involved,
or
(b) there is a
portion
of
shoreline
or
critical
area
on
the
property
to
be graded.
(A)
If
an
environmental checklist
is
not
required,
the official shall forward the application
and
materia
ls
to
public works who shall review the submitted appli-
cation
and
plans.
(B)
If
an
environmental checklist
is
required, the
applicant shall also submit this form to the official, and
the
department
of
community development shall com-
plete the State Environmental Policy Act
(SEPA) re-
view, including referral to
other
agencies.
( 4) After the grading
permit
application review
and
site inspection,
the
official will determine
the
per-
mit
conditions (including those from public works and
the
amount
of
plan review
and
grading
permit
fees).
The
grading permit
can
then
be
issued.
(5)
Other Permit Responsibilities
of
the Appli-
cant.
(A) Permission
of
Other Agencies
and
Owners.
The
applicant shall
be
responsible for written verifica-
tion
of
easement
or
grading authorization
on
property
not
owned by permittee.
(B)
Location
of
Property Lines.
Applicant
shall
be
responsible for having property lines located
or
re-
solving disputes with property lines, easement
or
title.
(6) Permit Review.
(A) A project involving excavation
and
fill must
comply with the locational
and
operational standards
set forth in the
Mason
County
Comprehensive Plan,
Subdivision Ordinance, Shoreline
Master
Program,
Building Code,
and
other
applicable
Mason
County
plans
and
ordinances
in
effect.
(B)
When a proposal requires SEPA environmen-
tal review
or
is
part
of
a shoreline substantial develop-
ment
permit, conditional
permit
or
variance,
no
grad-
ing permit shall
be
issued until the review process
and/
or
other permit approval has
been
completed.
408.11
(Mason County Supp. No.
22,
8-10)
14.44.
070
(C) The elements
of
the permit shall be limited to
the
work
on
an
approved grading plan.
(D) Conditions may be added to the permit which
are necessary for public safety and welfare, avoidance
of
hazards
and
nuisances, and protection
of
critical
areas. These conditions shall be within the scope
of
the
project proposed.
(Ord. No. 44-10, 5-25-2010)
14.44.080
Grading designation.
Grading
in excess
of
five
thousand cubic yards
shall be performed in accordance with the approved
grading
plan prepared by a civil engineer, and shall be
designated as
"engineered grading." Grading involving
less
than
five thousand cubic yards shall be designated
"regular grading" unless the official requires the grad-
ing to be performed as engineered grading.
(Ord.
No
. 44-10, 5-25-2010)
14.44.090 Engineered grading requirements.
Application for a permit for engineered grading
shall be accompanied by four sets
of
plans
and
specifi-
cations, which contain information covering construc-
tion
and
material requirements and are prepared and
signed by a civil engineer when required
by
the official.
Supporting
data
for the proposal, as required by the
official, may consist
of
a soils engineering report and
engineering geology report.
Plans shall be drawn to scale upon substantial
paper
or
material and shall be
of
sufficient clarity to
indicate nature
and
extent
of
the work proposed and
show in detail that they will conform to the provisions
of
this code and all relevant
laws,
ordinances, rules and
regulations. The first sheet
of
each set
of
plans shall
give location
of
the work, the names and address
of
the
owner and the person by whom they were prepared.
The
plans shall include the following information:
(1) General vicinity
of
the proposed site;
(2)
Property limits and accurate contours
of
ex-
isting ground
and
details
of
terrain and area drainage;
(3)
Limiting dimensions, elevations or finish con-
tours to be achieved by the grading, and proposed
drainage channels and related construction;
( 4) Detailed plans
of
all surface and subsurface
drainage devices, walls, cribbing, dams and other pro-
tective devices to be constructed with,
or
as a part of,
the proposed work together with a map showing the
drainage area
and
the estimated runoff
of
the area
served by any drains;
(5)
Erosion control measures to adequately pre-
vent impacts to adjoining properties
or
bodies
of
water;
(6) Location
of
any buildings
or
structures
on
the
property where the work
is
to be performed and the
location
of
any buildings or structures on land
of
ad-
jacent owners which are within fifteen feet
of
the prop-
erty
or
which may be affected by the proposed grading
operations;
(7) Construction time schedule;
(8) Type
of
site vegetation;
(9) Known/suspected soil or geologic hazards;
(10) Cross-sections
of
existing and graded areas,
showing contour intervals at five-foot vertical eleva-
tions, especially at the maximum cut and fill.
(Ord. No. 44-10, 5-25-2010)
14.44.100 Soils engineering report.
The soils engineering report required by
Section
14.44.090 shall include data regarding the nature, dis-
tribution and strength
of
existing soils, conclusions and
recommendations for grading procedures and design
criteria for corrective measures, including buttress
fills,
when necessary, and opinions
on
adequacy for the
intended use
of
sites to be developed
by
the proposed
grading
as
affected
by
soils engineering factors, includ-
ing the stability
of
slopes. Recommendations included
in the report and approved
by the official shall be
incorporated in the grading plans
or
specifications.
(Ord. No. 44-10, 5-25-2010)
14.44.110 Engineering geology report.
The engineering geology report required by
Sec-
tion 14.44.090 shall include an adequate description
of
the geology
of
the site, conclusions and recommenda-
tions regarding the effect
of
geologic conditions and
hazards (such as, earthquake, subsidence, or liquefac-
tion) on the proposed development, and opinion on the
adequacy for the intended use
of
sites to be developed
by the proposed grading,
as
affected
by
geologic fac-
tors. Recommendations included in the report and ap-
proved
by
the official shall be incorporated in the grad-
ing plans
or
specifications.
(Ord. No. 44-10, 5-25-2010)
(Mason County Supp. No.
22
, 8-10)
408.
12
14.44.120 Regular grading requirements.
Each
application for a permit for regular
grading
shall
be
accompanied
by
a plan in sufficient clarity
to
indicate
the
nature
and
extent
of
the work.
The
plans
shall
give location
of
the
work, the
name
of
the owner
and
the
name
of
the person who prepared the
plan
.
The
plan
shall include the following information:
(1) General vicinity
of
the proposed activity;
(2) Limiting dimensions
and
depth
of
cut
and
fill;
(3) Location
of
any buildings
or
structures
on
the
property
where
the
work
is
to
be performed
and
the
location
of
any buildings
or
structures
of
adjacent
land
owners
which are within fifteen feet
of
the
property
or
which
may be affected by the proposed grading
opera-
tion;
( 4)
The
amount
of
materials involved
and
the
·
iocation
of
the borrow sites for fill
and
the stockpile
sites for excavation;
(5) Erosion control measures to adequately pre-
vent
impacts to adjoining properties
or
bodies
of
water;
(6) Critical areas present
on
the property
and
dis-
tances
of
these features from the grading activities.
Such
activities
in
critical areas shall comply
with
the
requirements
established in the
Mason
County
re-
source
ordinance; the
proposal
may require a geologic
'.
assessment
or
geologic report.
(Ord.
No
. 44-10, 5-25-2010)
14.44.140 Permit issuance.
(a)
The
official may approve
or
approve with
mod-
ifications a grading
permit
application
submitted
un-
der
this chapter. A
permit
issued will include applicable
conditions
established
during
the review
of
the
permit
application.
(b)
The
official may require
that
grading opera-
tions
and
project designs be modified
if
delays occur
which
incur weather-generated problems
not
consid-
ered
at
the time the
permit
was issued.
(c) Permit validity, expiration, suspension
or
re-
vocation
and
time limitation
of
application shall be as
established
and
adopted
in
the
applicable sections
of
the
2009
IRC/IBC,
Part
I Administration
and
Section
14.08.040 shall apply.
(d) Following the
adoption
of
this chapter,
Ma-
son
County
departments shall
not
accept, process
or
approve
any application for subdivision
or
any
other
development
permit
for property
on
which a docu-
mented
violation
of
this
chapter
has occurred, until
the
14.44.170
violation is resolved by restoration
or
erosion control
and/
or
payment
of
penalties imposed for the violation.
(Ord. No. 44-10, 5-25-2010)
14.44.150 Grading permit fees.
(a) General. Fees shall be assessed
in
accordance
with the provisions
of
this section
or
shall be as set
forth in the fee schedule adopted by the
Mason
County
board
of
commissioners.
(b)
Plan
Review Fees. When a plan
or
other
data
are required
to
be submitted, a
plan
review
fee
shall
be
paid
at
the time
of
submitting plans and specifications
for review.
Said
plan
review fee shall be as set forth
in
the
adopted
fee schedule.
For
excavation
and
fill
on
the
same site,
the
fee shall be based
on
the volume
of
e{(cavation
and
fill material combined as defined· as
"grading"
by
this chapter.
(c)
Grading
Permit
Fees. A fee for each
grading
permit
shall be
paid
to the official as set forth in the
adopted
fee schedule. Separate permits
and
fees shall
apply
to
retaining walls
or
major
drainage structures.
There
shall
be
no
separate charge for
standard
terrace
drains
and
similar facilities.
(Ord.
No.
44-10, 5-25-2010)
14.44.160
Bonds.
The
official shall require·
bonds
in such form
and
amounts
as may
be
deemed necessary to assure
that
the
work,
if
not
completed in accordance with the ap-
proved
plans
and
specifications, will be corrected
to
eliminate
hazardous
conditions.
In
lieu
of
a surety bond, the
applicant
may file a
cash
bond
or
instrument
of
credit acceptable
to
the
official in
an
amount
equal to
that
which would be
required
in
the
surety bond.
(Ord. No. 44-10, 5-25-2010)
14.44.170 Cuts.
(a) General. Unless otherwise recommended
in
the approved soils engineering
or
engineering geology
report, cuts shall conform
to
the
provisions
of
this
section.
In
the
absence
of
an
approved soils engineering
report, these provisions may be waived for
minor
cuts
not
intended
to
support
structures.
(b) Slope.
The
slope
of
cut
surfaces shall
be
no
steeper
than
is safe for the intended use
and
shall
be
no
steeper
than
two horizontal
to
one
vertical unless
the
permittee furnishes a soils engineering
or
an
engineer-
ing geology report,
or
both, stating
that
the site
has
408.12.1
(Mason County Supp. No. 22, 8-10)
14.44.170
been investigated
and
giving
an
opinion
that
a
cut
at
a
steeper slope will
be
stable
and
not
create a hazard to
public
or
private property.
(Ord. No. 44-10, 5-25-2010)
14.44.180 Fills.
(a) General. Unless otherwise recommended in
the approved soils engineering report, fills shall con-
form
to
the provisions
of
this section.
In
the absence
of
an
approved soils engineering report, these provisions
may be waived for minor fills
not
intended
to
support
structures.
(b) Preparation
of
Ground
. Fill slopes shall
not
be constructed
on
natural slopes steeper
than
2:
1.
The
ground surface shall be prepared
to
receive fill by re-
moving vegetation, noncomplying fill, topsoil and other
unsuitable materials; by scarifying
to
provide a bond
with the new fill; and, where slopes are steeper than
5:1
and
the height
is
greater
than
five feet, by benching into
sound bedrock
or
other competent material as deter-
mined by the soils engineer.
The
bench under the toe
of
a
fill
on
a slope steeper
than
5:
1 shall be
at
least ten feet
wide. The area beyond the toe
of
fill shall be sloped for
sheet overflow
or
provided with a sub-drain. When fill
is
to be placed over a cut, the bench under the toe
of
fill
shall be
at
least ten feet wide,
but
the cut shall be made
before placing the fill
and
accepted by the soils engineer
or
engineering geologist,
or
both, as a suitable founda-
tion for fill.
( c) Fill Material. Organic material shall
not
be
permitted in
fills.
Except as permitted
by
the official, no
rock
or
similar irreducible material with a maximum
dimension grea
ter
than twelve inches shall be buried
or
placed in fills.
Exception:
The
official may permit placement
of
larger
rock when the soils engineer properly devises a method
of
placement
and
approves the fill stability. The follow-
ing conditions shall also apply:
(1)
Prior
to
issuance
of
the grading permit, poten-
tial rock disposal areas shall be delineated
on
the grad-
ing plan.
(2) Rock sizes greater
than
twelve inches in max-
imum dimension shall be ten feet
or
more below grade,
measured vertically.
(3) Rocks shall be placed so as
to
assure filling
of
all voids with well-graded soi
l.
(d) Compaction. All fills shall be compacted
to
minimum density as determined by 2009 IBC
and
sub-
ject to all requirements held in Chapters
17
and
18.
(e) The slope
of
fill surfaces shall be
no
steeper
than
is safe for the intended use. Fill slopes shall be
no
steeper
than
two horizontal
to
one vertical.
(Ord. No.
44-
10,
5-25-2010)
14.44.190
Setbacks.
(a) General.
Cut
and
fill
slopes shall be set back
from site boundaries in accordance with this section.
Setback dimensions shall be horizontal distances mea-
sured perpendicular to the site boundary.
Setback di-
mensions shall be as shown in Figure No.
Jl
08.1
of
the
2009 International Building Code.
(b) Top
of
Cut
Slope.
The
top
of
cut
slopes shall
not
be made nearer to a site boundary line
than
one-
fifth
of
the vertical height
of
cut
with a minimum
of
two feet and a maximum
of
ten feet. The setback may
need
to
be increased for any required interceptor drains.
The
top
of
the cut slope shall be finished as a rounded
or
bald head slope.
( c) Toe
of
Fill Slope. The toe
of
fill slope shall be
made
not
nearer to the site boundary line
than
one-half
the height
of
the slope with a minimum
of
two feet
and
a maximum
of
twenty feet. Where a fill slope is to be
located near the site boundary
and
the adjacent off-site
property is developed, special precautions shall be in-
corporated in the work as the official deems necessary
to
protect the adjoining property from damage as a
result
of
such grading. These precautions may include,
but
are
not
limited to:
(1) Additional setbacks;
(2) Provision for retaining
or
slough walls;
(3) Mechanical
or
chemical
tr
eatment
of
the fill
slope surface
to
minimize erosion;
( 4) Provisions for the control
of
surface waters.
( d) Modification
of
Slope Location.
The
official
may approve alternate setbacks. The official may re-
quire
an
investigation
an
d recommendation by a qual-
ified engineer
or
engineering geologist to demonstrate
that
the intent
of
this section has been satisfied.
(Ord. No. 44-
10
, 5-25-2010)
14.44.200 Drainage
and
terracing.
(a)
Ge
nera
l.
Un
less otherwise indicated
on
the
approved grading plan, drainage facilities
and
terrac-
(Mason County Supp.
No
. 22, 8-
10)
408.12.2
ing shall conform
to
the
provisions
of
this section for
cut
or
fill slopes steeper
than
three horizontal to one
vertical.
(b) Terrace. Terraces
at
least six feet in width shall
be established
at
not
more
than
thirty-foot vertical
intervals
on
all
cut
or
fill slopes
to
control surface
drainage
and
debris; except when only one terrace
is
required, it shall be
at
midheight.
For
cut
or
fill slopes
greater
than
sixty feet
and
up
to
one
hundred twenty
feet in vertical height,
one
terrace
at
approximate
ly
midheight shall be twelve feet in width. Terrace widths
and
spacing for
cut
and
fill slopes greater than one
hundred twenty feet in height shall be designed
by
the
civil engineer
and
approved by the official. Suitable
access shall be provided
to
permit proper cleaning
and
maintenance.
Swales
or
ditches
on
terraces shall have a (mini-
mum) gradient
of
five percent
and
must be paved with
reinforced concrete
not
less
than
three inches in thick-
ness
or
with
an
approved equal surface material. They
shall have a minimum
depth
at
the deepest point
of
one
foot
and
a minimum surface width
of
five feet.
A single
run
of
swale
or
ditch shall
not
collect
runoff from a tributary area exceeding thirteen thou-
sand five
hundred
square feet (projected) without dis-
. charging
into
a down
drain
.
An
analysis by a licensed
engineer may be required
to
determine pipe
or
swale
si
ze,
as determined by
the
officia
l.
(c) Subsurface Drainage.
Cut
and
fill slopes shall
be provided with subsurface drainage as necessary for
stability.
(d) Disposal.
In
compliance with
the
Mason
County practices regarding stormwater
mana
ge
ment,
all drainage facilities shall be designed
to
carry waters
to
the nearest practicable drainageway approved by
the
official
or
other
appropriate jurisdiction as a safe place
to
deposit such waters. Erosion
of
ground in the area
of
discharge shall be prevented by installation
of
nonerosive
downdrains
or
other
devices.
Building pads shall have a drainage gradient
of
two
percent toward approved drainage facilitie
s,
unless
waived by the official.
Exception:
The
gradient from the building
pad
may be
one
percent
if
all
of
the following conditions
exist throughout the permit area:
(1)
No
proposed fills are greater
than
ten feet in
maximum de
pth
.
14.44.220
(2)
No
proposed finish
cut
or
fill slope faces have
a vertical height in excess
of
ten feet.
(3)
No
existing slope faces, which have a slope
face steeper
than
ten horizontal to one vertical, have a
vertical height in excess
of
ten
feet.
(e) Interceptor Drains. Interceptor drains
with
grass
or
rock riprap may be installed along
the
top
of
all
cut
slopes where the tributary drainage
area
above
slopes toward the
cut
and
has
a drainage
path
greater
than
forty feet measured horizontall
y.
They shall have a
minimum
depth
of
twelve inches
and
a minimum
width
of
thirty inches measured horizontally across
the
drain.
The
design
of
the
drain
shall be approved by the offi-
cial.
(Ord. No. 44-10, 5-25-2010)
14.44.210 Erosion control.
(a) Slopes.
The
faces
of
cut
and
fill slopes shall
be
prepared
and
maintained
to
control against erosion.
Th
is
control
may consist
of
effective planting.
The
protection for the slopes shall be installed
as
soon
as
practicable
and
prior
to
calling for final approval. Where
cut
slopes
are
not
subject
to
erosion due to
the
erosion
resistant character
of
the materials, such protection
may
be
omitted.
(b)
Other
Devkes. Where necessary, check dams,
cribbing,
riprap
or
other
devices
or
methods shall
be
employed
to
control erosion
and
provide safety.
(Ord. No. 44-10,
5-25-2010)
14.44.220 Grading inspection.
(a) General. Grading operations for which a
per
-
mit
is required shall be subject
to
inspection by
the
official. Professional inspection
of
grading operations
shall
be
provided by
the
civil engineer, soils engineer,
engineering geologist
or
testing laboratory retained
to
provide
such
services
in
accordance with subsection ( e)
of
this section for engineered grading
and
as required
by
the
official for regular grading.
(b) Civil Engineer.
The
civil engineer shall
pro-
vide professional inspection within such engineer's
area
of
technical specialty, which shall consist
of
observa-
tion
and
review as
to
the establishment
of
line,
grade
and
surface drainage
of
the development area.
If
re-
vised plans are required during the course
of
the
work
they shall be prepared
by
the c
ivil
engineer.
( c) Soils Engineer. The soils engineer shall
pro
-
vide
prof
essional inspection within such engineer's
area
408.12.3
(Mason
Co
unty Supp. N
o.
22, 8-10)
14.44.220
of
technical specialty, which shall include observation
during
grading
and
testing for required compaction.
The
soils engineer shall provide sufficient observation
during
the preparation
of
the natural ground
and
pro-
vide sufficient observation during the preparation
of
the
natural
ground
and placement
and
compaction
of
the fill
to
verify
that
such work
is
being performed
in
accordance with
the
conditions
of
the approved
plan
and
the
appropriate
requirements
of
this chapter. Re-
vised recommendations relating to conditions differing
from
the
approved soils engineering
and
engineering
geology reports shall be submitted
to
the permittee, the
official
and
the civil engineer.
( d) Engineering Geologist.
The
engineering geol-
ogist shall provide professional inspection
withinsuch
engineering geologist's area
of
technical specialty, which
shall include professional inspection
of
the bedrock
excavation
to
determine
if
conditions encountered are
in
conformance with the approved report. Revised rec-
ommendations relating to conditions differing from the
approved engineering geology report shall be submit-
ted to
the
soils engineer.
(e) Permittee. The permittee shall be responsible
for the work to be performed
in
accordance with the
approved plans
and
specifications
and
in
conformance
with
the
provisions
of
this code. The permittee shall
engage consultants,
if
required, to provide professional
inspections
on
a timely basis
and
shall
act
as a coordi-
n
ator
between the consultants, the
contractor
an
d the
official.
In
the event
of
changed conditions, the permit-
tee shall be responsible for informing the official
of
such change
and
shall provide revised plans for
ap
-
proval.
(f) Official.
The
official shall inspect the project
at
the various stages
of
work requiring approval to deter-
mine
that
adequate control is being exercised by the
professional consultants.
(g) Notification
of
Noncompliance.
If,
in the
course
of
fulfilling their respective duties under this
chapter, the civil engineer, the soils engineer,
or
the
engineering geologist finds
that
the work
is
not
being
don
e
in
conformance with this chapter
or
the approved
grading plans, the discrepancies shall be reported im-
mediately
in
writing to the permittee
an
d
to
the official.
(i) Transfer
of
Responsibility.
If
the civil engineer,
the soils engineer,
or
th
e
eng
ineer
in
g geologist
of
re-
cord
is changed during
gra
ding, the work shall be
stopp
ed
until the replacement
has
agreed in writing to
accept their responsibility within the area
of
technical
competence for approval
upon
completion
of
the work.
It
shall be the duty
of
the permittee to notify the official
in writing
of
such change
prior
to
the recommencement
of
such grading.
(Ord. No. 44-10, 5-25-2010)
14.44.230
Completion
of
work.
(a)
Final
Reports.
Upon
completion
of
the rough
grading work
and
at
the final completion
of
the work,
the following reports
and
drawings
and
supplements
thereto
are
required for engineered grading
or
when
professional inspection is performed for regular grad-
ing, as applicable:
(1)
An
as-built grading
plan
prepared
by
the civil
engineer retained to provide such services in accor-
dance with
Section l 4.44.220(b) showing original ground
surface elevations, as-graded
ground
surface eleva-
tions,
lot
drainage patterns,
and
the locations
and
ele-
vations
of
surface
dra
inage facilities
and
of
the outlets
of
subsurface drains. As-constructed locations, eleva-
tions
an
d details
of
subsurface drains shall
be
shown as
reported by the soils engineer.
The
civil engineer shall
state
that
to the best
of
their knowledge the work
within their area
of
responsibility was
done
in accor-
dance with the final approved
grad
ing plan
and
their
recommendations;
(2) A report prepared by the soils
en
gineer re-
tained to provide such services
in
accordance with Sec-
tion 14.44.220( c ), including locations
and
elevations
of
field density tests, summaries
of
field
and
laborator
y
tests, other substantiating data, and comments
on
any
changes
made
durin
g
grad
ing and their effect
on
the
recomme
nd
ations
made
in the approved soils engineer-
ing investigation report.
Soils engineers shall submit a
statement
that
, to the best
of
their knowledge, the work
within their area
of
responsibilities is in accordance
with the approved soils engineering
report
and
applica-
ble provisions
of
this chapter;
(3) A report prepared by the engineering geolo-
gist retained
to
provide such services in accordance
with
Section 14.44.220(d), including a final descripti
on
of
the geology
of
the site
and
any new information
disclosed during the grading and the effect
of
same
on
recommendations incorporated in the approved
grad
-
ing plan. Engineering geologists shall submit a state-
ment that, to the best
of
their knowledge, the work
(Mason
Cou
nty Supp. No.
22,
8-
10)
408.12.4
within their area
of
responsibility
is
in accordance with
the approved engineering geologist report and applica-
ble provisions
of
this chapter.
(b) Notification
of
Completion. The permittee
shall notify the official when the grading operation
is
ready for final inspection. Final approval shall
not
be
given until all work, including installation
of
all drain-
age facilities and their protective devices, and all erosion-
control measures have been completed in accordance
with the final approved grading plan, and the required
reports have been submitted.
(Ord. No.
44-10, 5-25-2010)
14.44.240 Enforcement
and
penalties.
(a) Enforcement. The official
is
charged with en-
forcement
of
the provisions
of
this chapter.
It
is
unlaw-
ful for any person to grade,
fill,
excavate
or
cause the
same to be done in violation
of
any
of
the provisions
of
this chapter.
(b) General
Penalties. Any violation
of
this chap-
ter shall be subject to Chapter 14.12
of
the Mason
County Code, Violation and
Penalties, and Chapter
15
.
13
of the Mason County Code, Enforcement.
(Ord.
No.
44-10, 5-25-2010)
408 .
12
.5
14.44.
240
(Mason County Supp. No.
22,
8-
1
0)
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LAND MODIFICATION PERMIT (Grading Permit)

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Completed 18 April 2022

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