HomeMy WebLinkAbout2016-06-26 - Prime West Holding LLC, Brett Telford - Stormwater CovenantsThad L. Duvall, Auditor, Douglas County, WA.
AFN # 3192926 Recorded 03/04/2016 at 03:29:18PM,
COVEN Pages: 24 $96.00
PRIME WEST HOLDINGS
When Recorded Please Return to:
Dana Barnard, City Clerk
City of East Wenatchee
271 9th Street NE
East Wenatchee, WA 98802
The information contained in this boxed section is for recording purposes only in accordance with RCW 36.18 and RCW 65.04,
and is not to be relied upon for any other purposes, and shall not affect the intent of or any warranty contained in the document
itself.
Document Title: Declaration of Storm Water System Treatment Facility Maintenance Restrictions and Covenants
Reference Number of Documents Released: N/A
Reference Numbers of Related Documents: N/A
Grantor: PRIME WEST HOLDINGS LLC (AUTHORIZED SIGNATORY: BRETT TELFORD)
Grantee: City of East Wenatchee
Legal Description (Abbreviated): TAX 177 IN SWSW; A/K/A PCL A OF BLA #3186412. Full legal on page 4.
Parcel Number(s): 22201230053
DECLARATION OF STORM WATER SYSTEM TREATMENT FACILITY
MAINTENANCE RESTRICTIONS AND COVENANTS
Grantors declare and covenant as follows:
1. Grantors incorporate all exhibits attached to this Declaration by reference.
2. The City of East Wenatchee is the beneficiary of all conditions and restrictions set
forth in this Declaration.
3. Grantors own real property located at 725 & 755 Grant Road, East Wenatchee,
Washington. The legal description of the property is set forth in the attached Exhibit
A.
4. In relation to the property, Grantors have completed work associated with the project
identified as East Wenatchee File # SP 2015-03 AMENDED.
5. As a condition of development, Grantors have designed and constructed a private
storm water drainage system ("System") to serve the real property. To ensure the
System functions as designed, the design engineer has prepared an operation and
maintenance manual (attached as Exhibit B) in accordance with the requirements of
the East Wenatchee Municipal Code.
6. Likewise, to ensure the System functions as designed, Grantors are perpetually
responsible for the maintenance and repair of the System.
7. Grantors will inspect, maintain, and repair the System in accordance with the
requirements of the East Wenatchee Municipal Code, with the operation and
maintenance manual, and with the plans that are attached as Exhibit B.
7,�
Thad L. Duvall, Auditor, Douglas County, WA.
AFN # 3192926 Recorded 03/04/2016 at 03:29:18PM,
COVEN Pages: 24 $96.00
PRIME WEST HOLDINGS
When Recorded Please Return to:
Dana Barnard, City Clerk
City of East Wenatchee
271 9th Street NE
East Wenatchee, WA 98802
The information contained in this boxed section is for recording purposes only in accordance with RCW 36.18 and RCW 65.04,
and is not to be relied upon for any other purposes, and shall not affect the intent of or any warranty contained in the document
itself.
Document Title: Declaration of Storm Water System Treatment Facility Maintenance Restrictions and Covenants
Reference Number of Documents Released: N/A
Reference Numbers of Related Documents: N/A
Grantor: PRIME WEST HOLDINGS LLC (AUTHORIZED SIGNATORY: BRETT TELFORD)
Grantee: City of East Wenatchee
Legal Description (Abbreviated): TAX 177 IN SWSW; A/K/A PCL A OF BLA #3186412. Full legal on page 4.
Parcel Number(s): 22201230053
DECLARATION OF STORM WATER SYSTEM TREATMENT FACILITY
MAINTENANCE RESTRICTIONS AND COVENANTS
Grantors declare and covenant as follows:
1. Grantors incorporate all exhibits attached to this Declaration by reference.
2. The City of East Wenatchee is the beneficiary of all conditions and restrictions set
forth in this Declaration.
3. Grantors own real property located at 725 & 755 Grant Road, East Wenatchee,
Washington. The legal description of the property is set forth in the attached Exhibit
A.
4. In relation to the property, Grantors have completed work associated with the project
identified as East Wenatchee File # SP 2015-03 AMENDED.
5. As a condition of development, Grantors have designed and constructed a private
storm water drainage system ("System") to serve the real property. To ensure the
System functions as designed, the design engineer has prepared an operation and
maintenance manual (attached as Exhibit B) in accordance with the requirements of
the East Wenatchee Municipal Code.
6. Likewise, to ensure the System functions as designed, Grantors are perpetually
responsible for the maintenance and repair of the System.
7. Grantors will inspect, maintain, and repair the System in accordance with the
requirements of the East Wenatchee Municipal Code, with the operation and
maintenance manual, and with the plans that are attached as Exhibit B.
6,-a. t 7a
5�7�
8. The Grantors shall not reduce, expand or otherwise modify the design or operation of
the System without first obtaining review by and written approval from the City of
East Wenatchee
9. Grantors shall maintain the records of the installation of the System. Likewise,
Grantors shall make records of all maintenance and repairs done on the System.
Grantors shall retain these records for at least five years. Grantors agree to submit
copies of these records to the City by December 1 of each year. Grantors will also
make these records available to the City within five day upon receiving a written
request from the City or any other agency having jurisdiction.
10. If the Grantors receive prior, written approval from the City to subdivide the property,
Grantors agree to implement a long-term funding mechanism to support the continued
inspection, maintenance, and repair of the System. The Grantors shall implement such
a funding mechanism by creating an Owner's Association by further declarations and
covenants binding upon the real property, binding upon all subdivided lots, and
binding upon any purchasers of a subdivided lot, and binding upon Grantors'
successors and assigns.
11. To inspect the condition of the System, the City has the right to enter the real property
at reasonable times and with reasonable notice. The Grantors agree to fully comply
with all written notices of corrective action issued by the City or by any agency with
jurisdiction.
12. If the Grantors fail to fully and timely comply as required by a written notice of
corrective action, then the City, or any agency with jurisdiction, may enter the real
property to perform all work necessary to bring the System into compliance with
these Covenants. The Grantors agree to pay all costs and expenses incurred by the
City, or any agency with jurisdiction, for such repairs and maintenance. These costs
include, but are not limited to: the cost of personnel or contractors, the cost of
equipment, the cost of any design and engineering, and the cost of materials. The City
will bill Grantors for all costs associated with any remedial work done by the City.
Measured from the time the remedial work is completed, the City will charge interest
(as allowed by law) and will place a lien on the property for any unpaid costs.
13. Grantors waive any and all claims for damages against the City arising from the
design, construction, inspection, repair and/or maintenance of the System.
14. Grantors agree to indemnify, defend and hold harmless the City from any and all
claims arising from the design, construction, inspection, repair or maintenance of the
System.
15. Unless Grantors receive prior, written approval from the City, the Grantors may not
amend or modify the restrictions and conditions set forth in this Declaration.
16. If one of the parties initiates legal action to enforce the terms of this Declaration, each
party shall bear its own costs, attorney's fees, expert fees, and other fees.
17. The law of the State of Washington governs the interpretation and enforcement of this
Declaration. Any dispute regarding the interpretation or enforcement of this
Declaration shall by resolved by the Douglas County Superior Court.
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 2 of 24
18. The conditions and restrictions contained in this Declaration, along with the City's
right to enforce them, are covenants that run with the real property in perpetuity.
Accordingly, the conditions and restriction contained in this Declaration apply and
are forever binding upon Grantors, heirs, executors, administrators, subsequent
purchasers, grantees, or assigns.
19. If the Douglas County Superior Court determines that any provision of this
Declaration is illegal, invalid or unenforceable, the remaining provisions of the
Declaration will remain in full force and effect
Grantee — CITY rEWENATCHEE
BY: AT EST:
Steven C. Lacy, Nlalyyor City Clerk Dana Barnard
antor V
3 r�
Date:
CERTIFICATE OFACKNOWLEDGMENT
State of 0, }
bal} SS.
County of u p _ }
Date:
On this day personally appeared before me to me known to be
the individual, or individuals described in and who executed the within an oregoing
instrument, and acknowledged to me th'L sh4/they signed the same `h' �r/their free
es and voluntary act and deed, for the usan purposes therein mentioned. Given under
my hand and official seal this day of�,1,
By:
Notary Public residing at ) C ,Ag
My Appointment Expires: 1� J
CERTIFICATE OF ACKNOWLEDGMENT Is
State of �_AJ A }
} SS.
County of }
On this day personally appeared before meto me known to be
the individual, or individuals described inand who executed the within and foregoing
instrument, and acknowledged to me tha he they signed the same a . h-,§ hf/their free
and voluntary act and deed, for the uses an purposes therein mentioned. even under
my hand and official seal thisay of
By: 6na" &,1,6 t)44��
Notary Public residing at aelaix COUAM
My Appointment Expires: <9e i1 j
DANA .s
NOTARY
.
PUBLIC
COMMISSION EXPIRES
[.
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Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 3 of 24
Exhibit A
Legal Description
THAT PORTION OF THE SOUTHWEST QUARTER OF THE SOUTHWEST QUARTER OF
SECTION 12, TOWNSHIP 22 NORTH, RANGE 20 E.W.M., DOUGLAS COUNTY
WASHINGTON MORE PARTICULARLY DESCRIBED AS FOLLOWS:
COMMENCING AT THE SOUTH QUARTER CORNER OF SECTION 12, TOWNSHIP 22
NORTH, RANGE 20 E.W.M.; THENCE WEST ALONG THE SOUTH LINE OF SAID
SECTION A DISTANCE OF 1,495 FEET, THIS BEING THE POINT OF BEGINNING;
THENCE NORTH AND PARALLEL TO THE EAST BOUNDARY OF THE SOUTHWEST
QUARTER OF SAID SECTION 12, A DISTANCE OF 470 FEET; THENCE RUN WEST
350.6 FEET, MORE OR LESS, TO THE EASTERLY RIGHT OF WAY LINE OF THE
CANAL OF THE WENATCHEE RECLAMATION DISTRICT; THENCE IN A SOUTHERLY
DIRECTION ALONG THE EASTERLY RIGHT OF WAY LINE OF SAID CANAL TO THE
SOUTH LINE OF SAID SECTION 12; THENCE EAST ALONG THE SOUTH LINE OF
SAID SECTION 12, TO THE PLACE OF BEGINNING.
EXCEPT THE NORTH 200 FEET OF THE SOUTH 470 FEET OF THE EAST 150 FEET OF
THAT PORTION OF THE SOUTHWEST QUARTER OF THE SOUTHWEST QUARTER OF
SAID SECTION 12, LYING WEST OF THE WEST RIGHT OF WAY FOR A STREET
KNOWN AS NORTH GEORGIA AVENUE.
AND EXCEPT RIGHT OF WAY FOR NORTH GEORGIA AVENUE ON THE EAST LINE
THEREOF,
AND EXCEPT THE RIGHT OF WAY OF GRANT ROAD ALONG THE SOUTH LINE
THEREOF.
AND EXCEPT ANY PORTION THEREOF LYING EASTERLY OF A LINE THAT RUNS
PARALLEL TO THE EAST LINE OF THE SOUTHWEST QUARTER OF THE
SOUTHWEST QUARTER AND 1,495 FEET WEST OF THE SOUTH QUARTER OF SAID
SECTION.
AND EXCEPT THAT PORTION OF THE SOUTHWEST QUARTER OF THE SOUTHWEST
QUARTER OF SECTION 12, TOWNSHIP 22 NORTH, RANGE 20 E.W.M., DOUGLAS
COUNTY WASHINGTON MORE PARTICULARLY DESCRIBED AS FOLLOWS;
COMMENCING AT THE SOUTHWEST CORNER OF SECTION 12, TOWNSHIP 22
NORTH, RANGE 20 E.W.M.; THENCE EAST ALONG THE SOUTH LINE OF SAID
SECTION SOUTH 89048'09" EAST A DISTANCE OF 1143.30 FEET; THENCE NORTH
00027'38" WEST A DISTANCE OF 35.00 FEET THE INTERSECTION OF THE
NORTHERLY RIGHT OF WAY OF GRANT ROAD AND WESTERLY RIGHT ON WAY OF
NORTH GEORGIA AVENUE, A REBAR AND CAP AND THE TRUE POINT OF
BEGINNING;
THENCE NORTH 00027'38" WEST FOR A DISTANCE OF 234.97 FEET ALONG THE
WEST RIGHT OF WAY OF THE NORTH GEORGIA AVENUE; THENCE NORTH 89°50'33"
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 4 of 24
i
Legal Description (Continued)
WEST FOR A DISTANCE OF 150.23 FEET; THENCE NORTH 00028' 16" WEST FOR
A
DISTANCE OF 147.66 FEET; THENCE SOUTH 89 35 23 WEST FOR A DISTANCE
OF
35.65 FEET; THENCE SOUTH 00°28'35" EAST FOR DISTANCE OF 215.22 FEET;
THENCE SOUTH 00026' 19" EAST FOR A DISTANCE OF 125.94 FEET; THENCE NORTH
89035'23" EAST FOR A DISTANCE OF 30.94 FEET; THENCE SOUTH 009 V5I" WEST
FOR A DISTANCE OF 41.33 FEET; THENCE SOUTH 89 48 09 EAST FOR A DISTANCE
OF 155.42 FEET TO THE TRUE POINT OF BEGINNING.
(ALSO KNOWN AS PARCEL A BOUNDARY LINE ADJUSTMENT BLA 2015-02 RECORD
UNDER AUDITOR'S FILE NO. 3186412, DOUGLAS COUNTY, WASHINGTON)
Declaration of Storm Water System Restrictions and Covenants Page/5 of 24
Exhibit B
Operations and Maintenance Manual
STORM DRAINAGE OPERATIONS AND MAINTENANCE
Telford Grant Road (North Parcel)
City Of East Wenatchee, Washington
November 2015
This document is intended to provide guidance to ensure that the private on -site
stormwater systems remain functional. The inspection, maintenance, and repair of the
system components are the responsibility of the property Owner / Manager.
Stormwater System Components
• Vegetated Sheet Flow Dispersion -
The vegetated dispersion area that. conveys runoff to the infiltration trench is the
responsibility of the property Owner / Manager. The vegetated slope should be
inspected at least semi-annually and preferably after a large rain event.
Sediment accumulation and any debris / t,fash should be removed to ensure
adequate conveyance of runoff. Sparse or bare vegetation should be repaired /
replanted with a seed mixture as indicated in the approved plans. Eroded or
scoured portions of the slope should be filled, regraded and seeded per the
approved plans.
• Infiltration Trench -
Runoff from the private parking areas is conveyed to the infiltration trench from
the vegetated dispersion area. Like the vegetated dispersion area, the
infiltration trench is the responsibility of the property Owner I Manager. The
trench should be inspected at least annually and preferably after a large rain
event.
if standing water is observed and it appears that the infiltration trench is not
draining properly it is recommended that the Owner I Manager seek assistance
from someone experienced with this type of investigation (Public Works,
contractor, engineer).
inspection Tasks and Schedule
These components should be inspected at least annually, preferably after a major rain
event. Inspections shall use this report as well as the criteria from the Stormwater
Management Manual for Eastern Washington (SWMMEW), as necessary. Contact the
local public works department or the project engineer for assistance.
Each of the above -listed components should be checked and a written record of the
inspections sl7a# be kept by the Property Ownef / Manager.
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 6 of 24
Maintenance Schedule and Tasks
Damaged or nonfunctioning components shall be repaired in a timely manner. The
size, placement, and composition of stormwater components may not be altered
without written approval from the governing jurisdiction.
Recommended Maintenance Criteria
Attached are Maintenance Requirements from the SWMMEW. These are intended as
a guidance too] for inspection, and not necessarily specific instructions.
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 7 of 24
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Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 9 of 24
Appendix 5A — Recommended Maintenance Criteria
The facility -specific maintenance standards contained in this section are intended to be
conditions for determining if maintenance actions are required as identified, through inspection.
They are not intended to be measures of the facility's required: condition at all tunes between
inspections. in other words, exceed.ance of these conditions at any time between inspections
and/or maintenance does not automatically constitute a violation of these standards. However,
based upon inspection observations, the inspection and. maintenance schedules shall be adjusted
to minimize the length of time that a. facility is in a.condition that requires a maintenance. action..
No.. 9 — Wetponds
Maintenance
Defect
Conditions When Maintenance Is
Results Expected When
Component
Needed
Maintenance is Performed
General
Trash & Debris
Any trash and debris which exceed 5
Trash and debris cleared from site.
cubic feet,per 1,000 square feet (this
is about :equal to the amount of trash
It would take to fill up one standard
size garbage can). In general, there
should 'be no visual evidence of
dumping.
If less than threshold, all trash and.
debris will be removed as part of next
scheduled maintenance.
Poisonous
Any poisonous or nuisance
No danger of poisonous vegetation
Vegetation and
vegetation which may constitute a
where maintenance personnel or the
Noxious
hazard to maintenance personnel or
public -might normally be. (Coordinate
Weeds
the public.
with local health department)
Any evidence of noxious weeds as
Complete eradication of noxious weeds
defined by state or local regulations.
may not be passible. Compliance with
state or eradication policies
(Apply requirements of adopted IPM
re uiredfocal
q
policies for the use of herbicides).
Contaminants
Any evidence of oil; gasoline,
No contaminants or pollutants present.
and Pollution
contaminants or other pollutants
(Coordinate removal/cleanup with
local water quality response agency).
Rodent Holes
Any evidence of rodent holes if
Rodents destroyed and dam or berm
facility is acting as a dam or berm, or
repaired. (Coordinate with local health
any evidence of water piping through
department; coordinate with Ecology
dam or berm via rodent holes.
Dam Safety Office if pond exceeds 10
acre-feet.)
September 2004 Chapter 5 Runoff Treatment Facility Design 5A_1
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 10 of 24
No. 9 — Wetponds
Maintenance
Defect
Conditions When Maintenance is
Results Expected When
Component
Needed
Maintenance Is Performed
Beaver Dams
Darn results in change or function of
Facility is returned to design function.
the facility.
(Coordinate trapping,rif beavers and
removal of dams with appropriate
permitting agencies.)
Insects
When insects such as wasps and
Insects destroyed or removed from site.
hornets interfere with maintenance
activities.
Apply insecticides in compliance with
adopted IPM policies.
Tree Growth
Tree growth does not allow
Trees do not hinder maintenance
and Hazard
maintenance access or interferes
activities. Harvested trees should be
Trees
with maintenance activity (i.e_, slope
recycled into mulch or other beneficial
mowing, slit removal; vactoring, or
uses fe.g., alders for.firewood).
equipment movements). If trees are
not interfering: with access or
Remove hazard trees.
maintenance, do not remove:.
If dead, diseased; or dying trees are
identified.
(Else a certified Arborist to. determine
health of tree or removal
requirements.)
Side Slopes
Erosion
Eroded damage over.2 incites deep
Slopes should be stabilized using
of Pond
where cause of damage is still
appropriate erosion control measure(s);
present or where there. is potential far
e.g., rock reinforcement, planting of
continued erosion..
grass, compaction.
Any erosion observed on a
If erosion is occurring on compacted
compacted berm: embankment.
berms, a licensed civil engineer should
be consulted to resolve source of
erosion.
Storage Area
Sediment
Accumulated sediment that exceeds
Sediment cleaned out to designed pond
10% of the designed pond depth
shape and depth; pond reseeded if
unless otherwise specified or affects
necessary to control erosion.
inletting or outletting condition of the
facility.
Liner (if
Liner is visible and has more than
Linea repaired or replaced. Liner is fully
Applicable)
three 1/4-inch holes in :it.
covered.
5A-2 Chapter 5 — Runoff Treatment Facility Design September 2004
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 11 of 24
No. 9 — Wetponds
Maintenance
Defect
Conditions When Maintenance is Results Expected When
Component
Needed Maintenance is Performed
Pond Berms
Settlements
Any part of berm which has settled.4 Dike is built back to the design
(Dikes)
inches lower than the design elevation.
elevation.
If settlement is apparent; measure
berm to .determine amount of
settlement.
Settling can be an indication of more
severe problems with the berm or
outlet works. A licensed civil
engineer should be consultedto
determine the source of the
settlement.
Piping
Discernable water flow through pond Piping eliminated. Erosion potential
berm. Ongoing erosion with potential resolved,
for erosion to continue.
(Recommend a Goethechnical
engineer be called in to inspect and
evaluate condition and recommend
repair of condition.)
Emergency
Tree Growth
Tree growth on emergency spillways Trees .should be removed. If root
Overflow/
creates blockage problems and may system is small (base less than 4
Spillway and
cause failure of the berm due to inches) the root system may be left in
Berms over 4
uncontrolled overtopping. place. Otherwise the roots should be
feet in height,
removed and the berm restored. A
Tree growth on berms over 4 feet in licensed .civil engineer should be
height may lead to piping through the consulted for proper berm/spillway
berm which could lead to failure of restoration,
the berm.
Piping
Discernable water flow through pond Piping eliminated. Erosion potential
berm, tangoing erosion with potential resolved.
for erosion to continue.
(Recommend a Goethechnical
engineer be called in to inspect and
evaluate condition and recommend
repair of condition.)
September 2004 Chapter 5 — Runoff Treatment Facility Design 5A-3
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 12 of 24
No. I -- Wetponds
Maintenance
Defect
Conditions When Maintenance Is Results Expected When
Component
Needed Maintenance is performed
Emergency
Emergency
Only one layer of rock exists above Rocks and pad depth are restored to
Overflowl
Spillway
Overflow/
Spillway
native soil in area five square feet or design standards.
larger, or any exposure of native soil
at the top of out flow path of spillway.
(Rip -rap on inside slopes need not be
replaced.)
General
Water level
First cell is empty, .doesn't held water. Line the first cell to maintain at least 4
feet of water. Although the second
cell may drain, the first cell must
remain full to control turbulence of the
incoming flow and reduce sediment
resuspension.
Trash and
Accumulation that exceeds 9 Cl= per Trash and debris removed from pond.
Debris
1000-SF of pond area.
Inlet/Outlet Pipe
Inlet/Outlet pipe clogged with No clogging or blockage in the inlet
sediment and/or debris material, and outlet piping,
Sediment
Sediment accumulations in pond Sediment removed from pond bottom.
Accumulation in
bottom that exceeds the depth of
Pond Bottom
sediment zone plus 6-inches, usually
in the first cell.
Oil Sheen on
Prevalent and visible oil sheen. Oil removed from water using oil -
Water
absorbent pads or vactor truck.
Source of oil located and corrected.
If chronic low levels of oil persist,
plant wetiand plants such as Juncus
effusus. (soft rush) which can uptake
small concentrations of .oil.
Erosion
Erosion of the pond's side slopes Slopes stabilized using .proper
and/or scouring of the pond bottom, erosion control measures and repair
that exceeds 6-inches, or where methods.
continued. erosion is prevalent.
Settlement of
Any part of these components that Dike/berm is repaired to
Pond Dike/Berm
has settled 4-inches or lower than the specifications.
design elevation, or inspector
determines dike/berm is unsound.
Internal Serra
Bern dividing cells should.be level. Berm surface is leveled so that water
flows evenly over entire length of
berm.
Overflow
Rock is missing and soil is exposed Rocks replaced to specifications.
Spillway
at top of spillway or outside slope..
5A-4 Chapter 5 — Runoff Treatment Facility Design September 2004
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 13 of 24
No. 2 — Blo4nfiftWionfinfiltration TrencheslBasins
Maintenance
Defect
Conditions When Maintenance Is
Results, Expected
Component
Needed
When Maintenance Is
Performed
General
Trash & Debris
See'WetpondV'(No. 1).
See'Wetponds" (No. 1).
Poisonous/Noxious
See "Wetponds" (No. 1).
See "Wetponds" (No. 1).
Vegetation
Contaminants and
See "Wetponds" (No. 1).
See 'Wetpondel (No. 1),
Pollution
Rodent Holes
See "Wetponds!'(No. 1).
See "Wetponde'(No. 1).
Storage Area
Sediment
Water. ponding in infiltration pond after
Sediment is removed
rainfall ceases and appropriate time
andfor facility is cleaned
allowed for infiltration.
so that infiltration
(A percolation test pit or test of facility
indicates facility is only working at 90% of
systerb works according
to design.
its designed capabilities. If two inches or
more. sediment is present, remove).
Rock Filters
Sediment and
By visual inspection, little or no water flows
Gravel in rock filter is
Debris
through filter during heavy rain storms.
replaced.
Side Slopes of
Erosion
See `Wetpondsl' (No, 1).
See "Wetponds" (No. 1).
Pond
Emergency
Tree Growth
See 'Wetponds" (No. 1).
See'Wetponds"(No. 1).
Overflow Spillway
and Berms over 4
feet in height.
Piping
See'Wetponds" (No. 1).
See "Wetponds!'(No. 1).
Emergency
Rock Missing
See 'Wetponds" (No, 1)..
See 'Wetponds!'(No. 1).
Overflow Spillway
Erosion
See'Wetponds" (No. 1).
See 'Wetponde'(No. 1).
Pre -Settling Ponds
Facility or sump
6' or designed sediment trap depth of
Sediment is removed.
and Vaults
filled with Sediment
sediment.
and/or debris
September 2004 Chapter 5 — Runoff Treatment Facility Design 5A-5
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 14 of 24
STORM DRAINAGE OPERATIONS AND MAINTENANCE
Telford Grant Road (South Parcel)
City of East Wenatchee, Washington
November 2015
This document is intended to provide guidance to ensure that the private on -site
stormwater systems remain functional. The inspection, maintenance, and repair of the
system components are the responsibility of the property Owner / Manager.
Stormwater System Components
• Biofiltrafion Swale -
The grass lined biofiltration swale that conveys runoff to the infiltration trench is
the responsibility of the property Owner / Manager. The grass lined swale should
be inspected at least semi-annually and preferably after a large rain event.
Sediment accumulation and any debris / trash should be removed to ensure
adequate conveyance of runoff. Sparse or bare vegetation should be repaired /
replanted with a seed mixture as indicated in the approved plans. Eroded or
scoured portions of the swale should be filled, regraded and seeded per the
approved plans.
Vegetation within the swale should be maintained to a height of 34" and any
nuisance weeds should be removed,
Note: Do NOT flush the swale and wash the sediment downstream. Doing so
will wash the sediment into, and potentially contaminate, the infiltration trench.
Remove the sediment with a shovel. There is no need to be overly meticulous
as the intent is to simply provide volume for additional sediment to collect in
subsequent storms.
• Infiltration Trench -
Runoff from the private parking areas is conveyed to the infiltration trench from
the biofiltration swale. Like the swale, the infiltration trench is the responsibility
of the property Owner / Manager. The trench should be inspected at least
annually and preferably after a large rain event.
If standing water is observed and it appears that the infiltration trench is not
draining properly it is recommended that the Owner I Manager seek assistance
from someone experienced with this type of investigation (Public Works,
contractor, engineer).
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 15 of 24
inspection Tasks and Schedule
These components should be inspected at least annually, preferably after a major rain
event. inspections shall use this report as well as the criteria from the Stormwater
Management Manual for Eastern Washington (SWMMEW), as necessary. Contact the
local public works deportment or the project engineer for assistance.
Each of the above -listed components should be checked and a written record of the
inspections shall be kept by the Property Owner/ Manager.
Maintenance Schedule and Tasks
Damaged or nonfunctioning components shall be repaired in a timely manner. The
size, placement, and composition of stormwater components may not be altered
without written approval from the governing jurisdiction.
Recommended Maintenance Criteria
Attached are Maintenance Requirements from the SWMMEW. These are intended as
a guidance tool for inspection, and not necessarily specific instructions.
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 16 of 24
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Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 17 of 24
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Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 18 of 24
Appendix 5A — Recommended Maintenance Criteria
I W
The facility -specific maintenance standards contained in this section are intended to be
conditions for determining if maintenance actions are required as identified through inspection.
They are not intended to be *measures of the facility's required condition at all times between
inspections. In other words, exceedance. of these conditions at any time between inspections
and/or maintenance does not automatically constitute a violation of these standards. However,
based upon inspection. observations, the inspection and maintenance schedules shall be adjusted
to minimize the length of time that a facility is in. a condition. that requires a maintenance action.
No. 1 — Wetponds
Maintenance
Defect,
Conditions When Maintenance Is
Results Expected When
Component
Needed
Maintenance Is Performed
General
Trash & Debris
Any trash and debris which exceed 5
Trash and debris cleared from site.
cubic feet per 1,000 square feet (this
is about equal to the amount of trash
it would take to fill,up one standard
size garbage. can), In general, there
should .be no visual evidence of
dumping.
If less than threshold, all trash and
debris will be removed as part of next
scheduled maintenance.
Poisonous
Any poisonous or nuisance
No danger of poisonous vegetation
Vegetation and
vegetation which may constitute a
where maintenance personnel or the
Noxious
hazard to maintenance personnel or
public might normally be. (,Coordinate
Weeds
the public.
with local health department).
Any evidence of noxious weeds as
Complete eradication of noxious weeds
defined by state or local regulations.
may not be possible. Compliance with
state or local eradication policies
(Apply requirements of adopted IPM
required.
policies for the use of herbicides).
Contaminants
Any evidence of oil, gasoline,
No contaminants or pollutants present.
and Pollution
contaminants or other pollutants
(Coordinate removal/cleanup, with
local water quality response agency),
Rodent Holes
Any evidence of rodent holes if
Rodents destroyed and dam or berm
facility is acting as a dam or berm, or
repaired. (Coordinate with local health
any evidence of water piping through
department; coordinate with Ecology
dam or berm via. rodent holes.
Dam Safety Office If pond exceeds 10
I
acre-feet,)
September 2004 Chapter 5 — Runoff Treatment Facility Design 5A-1
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 19 of 24
No. I — Wetponds
Maintenance
Defect
Conditions When Maintenance Is
Results Expected When
Component
Needed
Maintenance Is Performed
Beaver Dams
Dam results in change or function of
Fatilityis returned to design function.
the facility,
(Coordinate trapping of beavers and
removal of dams with appropriate
permitting agencies,.)
Insects
When insects. such as wasps and
Insects destroyed or removed from site_
hornetsinterfere with maintenance
activities.
Apply insecticides in compliance with
adopted IPM policies.
Tree Growth
Tree growth does not allow
Trees. do not hinder maintenance
and Hazard
maintenance access or interferes
activities. Harvested trees should be
'frees
with maintenance activity (i.e., slope
recycled into mulch or other beneficial
mowing, sift removal, vactoring, or
uses (e.g., alders for firewood).
equipment movements). If trees are
not interfering with access or
Remove hazard trees.
maintenance, do not remove.
If dead, diseased, or dying trees are
identified.
(Use a certified Arborist to determine
health of tree or removal
requirements.)
Side Slopes
Erosion
Eroded damage over 2 inches deep
Slopes should be stabilized using
of Pond
where cause of damage is still
appropriate erosion control measure(s);
present or where there is potential for
e,g., rock reinforcement, planting of
continued erosion.
grass, compaction.
Any erosion observed on a
If erosion is occurring on compacted
compacted berm embankment.
berms, a licensed civil engineer should
be consulted to resolve source of
erosion.
Storage Area
Sediment
Accumulated sediment that exceeds
Sediment cleaned out to designed pond
10% of the designed pond depth
shape and depth; pond reseeded if
unless otherwise specified or affects
necessary to control erosion.
inletting or outletting condition of the
facility.
Liner (if
Liner is visible and has more than
I
Liner repaired or replaced. Liner is fully
I
Applicable)
three 114-inch holes in it,
covered.
5A-2 Chapter 5 — Runoff Treatment Facility Design September 2004
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 20 of 24
No. I — Wetponds
Maintenance
Defect
Conditions When Maintenance Is
Results Expected When
Component
Needed
Maintenance Is Performed
Pond Berms
Settlements
Any part of berm which has settled 4
Dikeis built back to the design
(Dikes)
inches lower than the design
elevation.
elevation.
If settlement is apparent, measure
berm to determine amount of
settlement.
Settling can be an indication of more
severe problems with the berm or
outlet works. A licensed civil
engineer should be consulted to
determine the source of the
settlement.
Piping
Discernable water flow through pond
Piping eliminated. Erosion potential
berm.. Ongoing erosion with potential
resolved.
for erosion to continue,
(Recommend a Goethechnical
engineer be called in to inspect and
evaluate condition and recommend
repair of condition.)
Emergency
Tree Growth
Tree growth on emergency spillways
Trees should be removed. If root
Overflow/
creates blockage problems and may
system is small (base less than 4
Spillway and
cause failure of the berm due to
inches) the root system may be left in
Berms over 4
uncontrolled overtopping,
place. Otherwise the roots should be
feet in height.
removed and the berm restored. A
Tree growth on berms over 4 feet In
licensed civil engineer should be
height may lead to piping through the
consulted for proper berrrdspilfway
berm which could lead to failure of
restoration.
the berm.
Piping
Discarriable water flow through pond
Piping eliminated, Erosion potential.
berm. Ongoing erosion with potential
resolved.
for erosion to continue.
(Recommend a Goethechnical
engineer be called in to inspect and
evaluate condition and recommend
repair of condition.)
September 2004 Chapter 5 — Runoff Treatment Faoffity Design 5A-3
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 21 of 24
No. 1— Wetponds
Maintenance
defect
Conditions When Maintenance Is
Results Expected When
Component
Needed
Maintenance Is performed
Emergency
Emergency
Only one layer of rock exists above
Rocks and pad depth are restored to
Overflow/
Spillway
Overflow/
Spillway
native soil in area five square feet or
larger, or any exposure of native soil
at the top of outflow path of spillway.
design standards.
(Rip -rap on inside slopes .need not be
replaced.)
General
Water level
First cell is empty, doesn't hold water.
Lime the first cell to maintain at least 4
feet of water. Although the second.
cell may drain, the first cell must
remain full to control turbulence of the
incoming flow and reduce sediment
resuspension.
Trash and
Accumulation that :exceeds 1 GF per
Trash and debris removed from pond..
Debris
1000-SF of pond area.
Inlet/Outlet Pipe
InletlOutlet pipe clogged with
No clogging or blockage in the inlet
sediment andlor debris material.
and outlet piping.
Sediment
Sediment accumulations in pond
Sediment removed from pond bottom.
Accumulation in
bottom that exceeds the depth of
Pond Bottom
sediment zone .plus 6-inches, usually
in the first cell.
Oil Sheen on
Prevalent and visible oil sheen.
Oil removed from water using oil -
Water
absorbent pads or vactor truck.
Source ofol'locatedand corrected.
If chronic love levels of ail persist,
plant wetland plantss such as Juncus
effuses (soft rush) which can uptake
small concentrations of oil.
Erosion
Erosion of the pond's side slopes
Slopes stabilized using proper
andlor scouring of the pond bottom,
erosion control measures and repair
that exceeds 6-inches, or where
methods,
continued erosion is prevalent.
Settlement of
Any part of these components that
Dike/berm is repaired to
Pond Dike/Berm
has settled 4-inches or lower than the
specifications.
design elevation, or inspector
determines dikelberm is unsound.
Internal Berm
Berm dividing: cells should be level.
Berm surface is leveled so that water
flows evenly over entire length of
berm.
Overflow
Rock is missing and soil is exposed
Rocks replaced to specifications.
Spillway
at top of spillway or outside slope.
5A-4 Chapter 5 — Runoff Treatment Facility ;design September 2004
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Page 22 of 24
No. 2 — Bio-Mitration/Infiltration Trenches/Basins
Maintenance
Defect
Conditions When Maintenance Is
Results Expected
Component
Needed
When Maintenance Is
Performed
General
Trash &Debris
See "Wetponds" (No. 1).
See "Wetponds" (No. 1),
See "Wetponds!'(No.. 1).
See "Wetpohds" (No. 1).
Poisonous/Noxious
Vegetation
See "Wetponds" (No. 1).
See "Wetponds"' (No. 1).
Contaminants and
Pollution
See "Wetponds'" (No. 1).
See "Wetponds" (No. 1).
Rodent Holes
Storage Area
Sediment
Water ponding in infiltration pond aftr
Sediment is removed
rainfall ceases and appropriate time
allowed for infiltration.
and/or facility is cleaned
so that infiltration
(A percolation test pit or test of facility
indicates facility is only working at 90% of
system works according
to design.
its designed capabilities. If two inches or
more sediment is present remove).
Rock Filters
Sediment and
By visual inspection, fiftle or no water flows
Gravel in rock filter is
Debris
through filter during heavy rain storms.
replaced_
SideSlopes of
Erosion
See "Wetponds" (No. 1).
See "Wetponds" (No. 1),
Pond
Emergency
Tree Growth
See "Wetponds" (No. 1).
See "Wetponds" (No. 1).
Overflow Spillway
and Berms over 4
feet in height.
See "Wetponds" (No. 1).
See "Wetponds" (No. 1).
Piping
Emergency
Rock Missing
See "Wetponds" (No. 1).
See "Wetponds" (No. 1),
Overflow Spillway
See "Wetponds"' (No. 1).
See "Wetponds" (No. 1).
Erosion
Pre -Settling Ponds
Facility or sump
Wor designed sediment trap depth of
Sediment is removed,
and Vaults
filled with Sediment
sediment.
I
and/or debris
September 2004 Chapter 5 — Runoff Treatment Facility Design 5A-5
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Page 23 of 24
No. 8 Biofltration Swale
Maintenance
Defect or Condition When
Recommended Maintenance to Correct
Component
Problem Maintenance is Needed
Problem
General
Sediment Sediment depth exceeds 2
Remove sediment deposits on grass
Accumulation on inches.
treatment area of the bio Swale. When
Grass
finished, swale should be level frorn side
to side and drain freely toward outlet.
There should be no areas of standing
water once. inflow has ceased.
Standing Water When water stands in the
Any of the following may apply: remove
swale between storms .and
sediment or trash blockages., improve
does not drain freely,
grade from head to foot of swale,. remove
clogged check dams, add underdrains or
convert to a wet biofiltration swale.
Flow spreader Flow spreader uneven or
Level the spreader and clean so that flaws
clogged so that floats are not
are spread evenly over entire Swale width.
uniformly distributed through
entire swale width.
Constant When small quantities of
Add a low -flow pea -gravel drain the length
Baseflow water continually flow through
of the swale or by-pass the baseflow
the swale, evert when it has
around the swale.
been dry for weeks, and an
eroded, muddy channel has
formed in the Swale bottom.
Poor Vegetation When grass is sparse or bare
Coverage or eroded patches occur in
Determine why grass growth is poor and
correct that condition. Re -plant with plugs
more than 10% of the Swale
bottom.
of grass from the upper slope. plant in the
swale, bottom at 8-inch intervals. Or re-
seed into loosened, fertile soil.
Vegetation When the grass becomes
Mow vegetation or remove nuisance
excessively tall (greater than
vegetation so that flow not impeded.
10 inches); when nuisance.
Grass should be mowed to a Height of 3 to
weeds and other vegetation
4 inches. Remove grass clippings.
start to take over.
Excessive Grass growth is pour because
If possible, trim back. over -hanging limbs
Shading sunlight does not reach
and remove brushy vegetation on
Swale.
adjacent slopes.
Inlet/Outlet Inletfoutiet areas clogged with
Remove material so that there is no
sediment and/or debris.
clogging or biockage in the inlet and outlet
area.
Trash and Trash and debris
Remove trash and debris from bioswale.
Debris accumulated in the bio-swale.
Accumulation
Erosion/Scouring Eroded or scoured swale
For ruts or bare areas less than 12 inches
bottom due to flow
wide, repair the damaged area by filling
channeliza#ion, or higher
with crushed gravel. If bare areas are
flows.
large, .generally greater than 12 inches
wide, the Swaleshould be re -graded and
re -seeded. For smaller bare areas,
overseed when Mare spots are evident, or
take plugs of grass from the upper slope
and plant in the Swale bottom at 8-inch
intervals.
September 2004 Chapter 5 — Runoff Treatment Facitity Design 5A-11
Declaration of Storm Water System Restrictions and Covenants (Ver 7/30/2015)
Page 24 of 24