HomeMy WebLinkAboutL_Declaration of Covenant.pdf
MAINTENANCE INSTRUCTIONS FOR FULL INFILTRATION
Your property contains an on-site BMP (best management practice) called “full infiltration,” which
was installed to mitigate the stormwater quantity and quality impacts of some or all of the impervious
surfaces on your property.
Full infiltration is a method of soaking runoff from impervious area (such as paved areas and roofs)
into the ground. If properly installed and maintained per Appendix A of the City of Renton’s Surface
Water Design Manual, full infiltration can manage runoff so that a majority of precipitation events are
absorbed. Infiltration devices, such as gravel filled trenches, drywells, and ground surface depressions,
facilitate this process by putting runoff in direct contact with the soil and holding the runoff long
enough to soak most of it into the ground. To be successful, the soil condition around the infiltration
device must be reliably able to soak water into the ground for a reasonable number of years.
Infiltration Devices
The infiltration devices used on your property include the following as indicated on the site
plan (CHECK THE BOX(ES) THAT APPLY):
gravel filled trenches, drywells, ground surface depressions.
MAINTENANCE RESTRICTIONS
The size, placement, and composition of these devices as depicted by the site plan and design details
must be maintained and may not be changed without written approval from the City of Renton or
through a future development permit from the City of Renton.
INSPECTION FREQUENCY AND MAINTENANCE GUIDELINES
Infiltration devices must be inspected annually and after major storm events to identify and
repair any physical defects.
Maintenance and operation of the system should focus on ensuring the system’s viability by
preventing sediment-laden flows from entering the device. Excessive sedimentation will result
in a plugged or non-functioning facility.
If the infiltration device has a catch basin, sediment accumulation must be removed on a yearly
basis or more frequently if necessary.
Prolonged ponding around or atop a device may indicate a plugged facility. If the device
becomes plugged, it must be replaced.
Keeping the areas that drain to infiltration devices well swept and clean will enhance the
longevity of these devices.
For roofs, frequent cleaning of gutters will reduce sediment loads to these devices.
RECORDING REQUIREMENT
These full infiltration on-site BMP maintenance and operation instructions must be recorded as an
attachment to the required declaration of covenant and grant of easement per Requirement 3 of
Section C.1.3.4 of the City of Renton Surface Water Design Manual. The intent of these instructions is
to explain to future property owners, the purpose of the BMP and how it must be maintained and
operated. These instructions are intended to be a minimum; the City of Renton may require additional
instructions based on site-specific conditions. See the City of Renton’s Surface Water Design Manual
website for additional information and updates.
TYPICAL FULL INFILTRATION APPLICATIONS
6"
24"
12"
24"
WASHED ROCK 1 12"- 34"
LEVEL
INFILTRATION TRENCH
SECTION A
NTS
PLAN VIEW
NTS
SECTION VIEW
NTS
VARIES
A
A
6"
6"
4" RIGID OR 6"
FLEXIBLE
PERFORATED
PIPE
CB SUMP w/SOLID LID ROOF DRAIN
4" RIGID OR 6" FLEXIBLE
PERFORATED PIPE
OVERFLOW
SPLASH BLOCK
ROOF DRAIN
CB SUMP w/SOLID LID
12"
FINE MESH
SCREEN
SETBACK
FROM
BUILDING
5' MIN.
1' MIN.
1' MIN.
FILTER FABRIC
COMPACTED BACKFILL
4" RIGID OR 6" FLEXIBLE
PERFORATED PIPE
112" - 34" WASHED ROCK
MIN. 1' ABOVE SEASONAL
HIGH GROUNDWATER
TABLE, SEE SECTION C.2.2.2
TRENCH SETBACK FROM
BUILDING AS REQUIRED,
15' MIN.
DRIVEWAY
X-SECTION
NTS
2' MIN.
FILTER STRIP
SEE SECTIONS
6.3.4 & 6.3.5
18" MIN.
6" MIN.
3/4" TO 1-1/2"
WASHED DRAIN
ROCK
GRASS
OVERFLOW
NOTE:
SEE C.2.2.3 FOR
TRENCH LENGTHS,
TRENCH SPACING AND
SITE LIMITATIONS
MIN. 1' ABOVE
SEASONAL HIGH
GROUNDWATER
TABLE, SEE
SECTION C.2.2.2
X-SECTION
NTS
GRASS
2' MIN.
18" MIN.
6" MIN.
3/4" TO 1-1/2"
WASHED DRAIN
ROCK
OVERFLOW
15' MIN. AS
REQUIRED,
SEE C.2.2.3
FROM ROOF
N
S
T
T
SMIN. 1' ABOVE
SEASONAL HIGH
GROUNDWATER
TABLE, SEE
SECTION C.2.2.2
HOUSE
FLOW
48 INCH DIAMETER
HOLE FILLED WITH
1 12" - 3" WASHED
DRAIN ROCK
SECTION
NTS
MARK CENTER OF HOLE
WITH 1" CAPPED PVC
OR OTHER MEANS
FLUSH WITH SURFACE
ROOF DOWNSPOUT
OVERFLOW
SPLASH BLOCK TOPSOIL
FINE MESH SCREEN
MIN. 4" DIA.
PVC PIPE
SIDES OF HOLE
LINED WITH
FILTER FABRIC
CATCH BASIN
(YARD DRAIN)
15' MIN. AS REQUIRED, SEE SECTION C.2.2.3
VARIES
1' MIN.
MIN. 1' ABOVE SEASONAL
HIGH GROUNDWATER TABLE,
SEE SECTION C.2.2.2
5' MIN. SETBACK
FROM BUILDING
FLOW
PLAN VIEW
NTS
HOUSE
ROOFDOWNSPOUT
ROOF
DOWNSPOUT
CATCH BASIN
(YARD DRAIN)
48 INCH DIAMETER
HOLE FILLED WITH
1 12" - 3" WASHED
DRAIN ROCK
Form Revised 12/12/06 1
RECORDING REQUESTED BY AND
WHEN RECORDED MAIL TO:
DECLARATION OF COVENANT
PROHIBITING USE OF LEACHABLE METALS
Grantor: _
Grantee: City of Renton
Legal Description:
_________________________________________________________________________________
_________________________________________________________________________________
Additional Legal(s) on:
Assessor's Tax Parcel ID#:
IN CONSIDERATION of the approved City of Renton ________________________ permit for
application file No. relating to real property legally described above, the
undersigned as Grantor(s), declares(declare) that the above described property is hereby established as
having a prohibition on the use of leachable metals on those portions of the property exposed to the
weather for the purpose of limiting metals in stormwater flows and is subject to the following
restrictions.
The Grantor(s) hereby covenants(covenant) and agrees(agree) as follows: no leachable metal
surfaces exposed to the weather will be allowed on the property. Leachable metal surfaces means a
surface area that consists of or is coated with a non-ferrous metal that is soluble in water. Common
leachable metal surfaces include, but are not limited to, galvanized steel roofing, gutters, flashing,
Form Revised 12/12/06 2
downspouts, guardrails, light posts, and copper roofing. City of Renton or its municipal successors shall
have a nonexclusive perpetual access easement on the Property in order to ingress and egress over the
Property for the sole purposes of inspecting and monitoring that no leachable metal is present on the
Property.
This easement/restriction is binding upon the Grantor(s), its heirs, successors, and assigns unless
or until a new drainage or site plan is reviewed and approved by the City of Renton or its successor.
Form Revised 12/12/06 3
IN WITNESS WHEREOF, this Declaration of Covenant is executed this _____ day of
____________________, 20_____.
GRANTOR, owner of the Property
GRANTOR, owner of the Property
STATE OF WASHINGTON ) COUNTY OF KING )ss.
On this day personally appeared before me:
_____________________________________________, to me known to be the individual(s) described
in and who executed the within and foregoing instrument and acknowledged that they signed the same as
their free and voluntary act and deed, for the uses and purposes therein stated.
Given under my hand and official seal this _____ day of ____________________, 20_____.
Printed name Notary Public in and for the State of Washington, residing at
My appointment expires