HomeMy WebLinkAbout200412290468 STORM EASEMENT 122904Return Address:
City of Auburn
City Clerk
25 West Main
Auburn, WA 98001
III~~~I~III~bIINMI~
0412280988 17 P0.4y
G~EPCE 2COVNiV. 2wnSxINGiON
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Above this line reserved for recording information.
STORM WATER EASEMENT AND MAINTENANCE AGREEMENT
FAC04-0018
Reference # (if applicable): N/A
Grantor/Borrower: Evergreen Tucci Partners, LLC
Grantee/Assignee/Beneficiary: . City of Auburn
Legal Description/STR: SE ''/o, 06-20-05E &'NE ''/o, 07-20-05E
Assessor's Tax Parcel ID#: 052006-8001
THIS EASEMENT AND AGREEMENT made and entered into this ,?5yd day of
j'2fCcmbvr , 2004, by and between the City of Auburn, a municipal corporation
of King County, Washington, hereinafter referred to as "CITY" and
Evergreen Tucci Partners, LLC, hereinafter referred to as "PROPERTY OWNER".
WHEREAS, PROPERTY OWNER has applied for certain permits with the CITY
for the construction of facilities for Lakeland Hills Area 19 Apartments (Palermo) located
at Lake Tapps Parkway and Lakeland Hills Way, which create impervious surface; and
WHEREAS, the PROPERTY OWNER will complete a storm system; and
WHEREAS, the PROPERTY OWNER and the CITY desire that the storm system
be maintained to provide adequate facilities for controlling both the quantity and quality of
storm drainage; and
WHEREAS, for maintenance of a storm system it is necessary to have appropriate
right-of-way to bring in equipment to conduct maintenance functions; and
WHEREAS, maintenance requirement is a covenant running with the land and
binding upon all heirs, successors and assigns of both parties; and
Storm Water Easement and Maintenance Agreement
Page l of 17
S ~ \ n,,.4
EXCISE TAX EXEMPT DATE -;"4
Pierce County
By -C Auth. Sig
WHEREAS, the parties desire that this Agreement be recorded to advise heirs,
successors and assigns of both parties as to the existence of this easement and agreement;
and
WHEREAS, an easement is needed to bring in maintenance equipment; and
WHEREAS, the parties are both desirous of permitting inspection of the storm
system to make certain that it is functioning properly and for purposes of determining the
appropriate repairs.
NOW, THEREFORE, BASED UPON MUTUAL COVENANTS TO BE
DERIVED THE PARTIES AGREE AS FOLLOWS:
Section 1, EASEMENT
PROPERTY OWNER hereby provides a non-exclusive easement to the City for
access, inspection, and maintenance for the purposes of this Agreement and the attached
Storm Water Pollution Prevention Plan, over, under and on that real estate described in
Exhibit " AX Viand on that portion of the property as showing on the approved Record
Drawings revised pursuant to construction records for the City of Auburn undet`A tWo.
FAC04-0018, which record drawings are hereby incorporated by reference as if set out in
full. This easement shall be a burden to that real estate which is legally described and
attached as Exhibit "A" and incorporated herein by this reference, and shall be a benefit to
the City Storm Drainage Utility System.
Section 2, HEIRS, SUCCESSORS AND ASSIGNS
This Agreement shall be binding upon the heirs, successors and assigns of the
parties.
Section 3, MAINTENANCE
The PROPERTY OWNER agrees to maintain the storm system in accordance with
the ordinances and all applicable codes of the CITY and the Storm Water Pollution
Prevention Maintenance and Operation Schedule attached as Exhibit "B" and incorporated
herein by this reference. The PROPERTY OWNER does hereby agree that the CITY may
enter onto the property of the PROPERTY OWNER via the easement described above to
inspect and perform necessary maintenance if, after the PROPERTY OWNER is given
notice to maintain, the PROPERTY OWNER fails to maintain. Further, the PROPERTY
OWNER agrees the CITY may enter onto the property of PROPERTY OWNER via the
easement described above to perform emergency maintenance in the event of the storm
system's failure, which might result in adverse impacts(s) on public facilities or private
Storm Water Easement and Maintenance Agreement
Page 2 of 17
EXECUTED as of the date first written above
Ever,jr-Pe'n ucc i Rtr+ti4rs ac
caner - Date
✓ J;-/0o anu~1 Car ,
Y: ~ exe?t as~W P
Owner Date
evemet-r-/ C#V44se/
STATE OF WASHINGTON)
) ss
Ge
COUNTY OFLe4f
I certify I have know or have satisfactory evidence that Ame6g- L . t&Nphrygs
is/are the person(s) who appeared before me, and said person(s) acknowledged that
he/she/they signed this instrument on oath stated that he/she/they was/were authorized to
execute the instrument. and acknowledge as the e-tee4,1 Caunre
a limited liability company, to be the free and v untary act of s tech party for the uses and
purposes mentioned in the instrument.
Dated •o?a 6
SqR
Q' ,SION Fly it
001 v NOTARY 9m SAO '
otary Public in and for the State of Washington
. PUBLIC
Residing at rr Klt~
+~`~y S_1 136 eo_; My appointment expires OG
OFWASW\
W W/tlb
File: # 1009
REF. FI DevelopmentTormsTegal Documents\2004 (Rev. 11/04)
Storm Water Easement and Maintenance Agreement
Page 4 of 17
facilities of other property owners. In both events the PROPERTY OWNER agrees to
reimburse the CITY for the costs incurred by the CITY in maintaining the storm system.
Should the CJTY incur attorney's fees and/or costs in enforcing the agreement and/or in
nllutaanit g %or boieatii~g `ix Qintknance fees, tjie PROPERTY OWNER agrees to pay
reasonable attorney's fees and all costs incurred by the CITY.
Section 4, ACKN6*L*k1M`MENT OF OTHER ENFORCEMENT ACTIONS
PROP t' Y,.QWNER acknowledges' that there may be liability for violations of
codes that could; fxn''ad i hQtjfJ fines and/or the possibility of incarceration in addition
to the fees for maintenance should violations occur.
EXECUTED as of the date first written above.
CITY OF AUBURN `
r X2-1.3 - d
n m '
WE *
im Caiiaw, St `rm Drainage Engineer Date
STA iE WASHIk ~fo . > . .
)ss.
County of King )
I certify that I know or have satisfactory evidence that Tim Carlaiv is'; 4"i-eq_pe"r*%5on who
appeared before me, and said person acknowledged that he signed this instrument, on oath
stated that he was authorized to execute the instrument and acknowledged it as the
STORM DRAINAGE ENGINEER of THE CITY OF AUBURN to be the free and
voluntary act of s ch pa y,foAthe uses wd pua e mentioned in this instrument.
Dated g I a ~~3
13,40"
:
NOTA) 9m
N jOUBLIG
Ott 0-
1 kk L . 6 - CJ r, g
Notary Pub is in and for the State of Washington
Residing at Lr_~ Lo A U,^(+ y
My appointment expires I I/ i g/ c '7-
Storm Water Easement and Maintenance Agreement
Page 3 of 17
EXHIBIT A
LEGAL DESCRIPTION
LOT 1 OF THE LOT LINE ADJUSTMENT AFN 200212091090 OF LOTS 1 AND 2 OF
AUBURN SHORT PLAT - AFN 200108160470 TOGETHER WITH TRACT D OF RECORD
OF SURVEY FOR 20 ACRE SITES PER AFN 9809145005 EXCEPT RIGHT OF WAY FOR
LAKE TAPPS PARKWAY EAST EXTENSION PER AFN 200305180714.
Storm Water Easement and Maintenance Agreement
Page 5 of 17
EXHIBITS'
STORM WATER POLLUTION PREVENTION
MAINTENANCE and OPEATION SCHEDULE
for
Area 19 Apartments
FAC NO. 04-0018
GRA NO. 04-0001
Site Address:
The project is located in Portions of Section 6 & 7, Township 20, Range 5
East, W.M., Along Lake Tapps Parkway. The tax parcel number is 052006-
8001
Introduction:
This storm drainage technical information report has been prepared to
address the City of Auburn's site development and storm drainage
requirements for the proposed Area 19 Apartments located at Lake Tapps
Parkway. The site has an area of approximately 18 acres and is currently
undeveloped. The subject site will be an Apartment complex.
The subject site will be developed as an apartment site in accordance with
the site plan approvals.
According to the City of Auburn's Construction Standards for storm water
management, the city requires storm water quantity and quality control to all
proposed developments. We have proposed to collect all of the storm
water runoff from the landscaped, building and pavement areas in a series
of catch basins. This water will be conveyed by storm drainage pipe to a
storm water detention/wet-pond, pond 5B located adjacent to the site to the
west. Here the storm water will be released into the Lake Tapps Parkway
drainage system, which discharges to the Tail Race.
Plan Goal:
The specific purpose for the storm water facility is to minimize pollution that
is typically associated with modern development. In general, pollution from
motor vehicles and pollution generated from erosion. Attached to this
narrative is a maintenance manual, which offers guidelines to the owner for
storm water facility maintenance.
Storm Water Easement and Maintenance Agreement
Page 6 of 17
r
Prevention BMP'S:
The catch basins shall have stenciled on them "DUMP NO WASTE -
DRAINS TO STREAM." The owner shall be responsible for sweeping the
lot, installing storm drainage stenciling and provide spill control procedures.
In case of spill call DOE at 1-425-649-7000. The catch basins,
detention/WET-POND, and control structures will be visually inspected for
accumulation of debris and silt and will be maintained as required by this
pollution prevention plan and attachments.
• Maintenance Standards for Drainage Facilities (from the Department of
Ecology Storm Water Manual, August 2001)
No. 1 - Detention Pond
No. 4 - Control Structure/Flow Restrictor
No. 5 Catch Basins
= No. 11 - WET-POND
Treatment BMP'S:
A two-celled detention/wet-pond has been installed to treat runoff for
conventional pollutants. The wet-pond was designed to treat 64% of the 2-
year storm event (water quality storm) for water quality treatment. In
addition, the detention pond was designed to detain the volume created
from releasing half the existing 2-year, 10, 25, and 100-year storm events,
while holding the developed 2-year, 10, 25, and 100-year storm volumes.
The City of Auburn Storm Drainage Utility section is to review and approve
any changes to this Storm Water Pollution Prevention Plan prior to changes,
in its implementation. Additionally, any changes in ownership or person of
responsibility are to be reported to the City of Auburn Storm Drainage Utility
section.
Storm Water Easement and Maintenance Agreement
Page 7 of 17
Inspection/Maintenance:
Regular inspections of the drainage facilities should be carried out twice per
year, in the spring and fall. The responsible party should keep records of
these inspections available for review by the City. Additional inspections
may be required after severe storms.
Routine maintenance of the site will include mowing, care of landscaping
and the removal of.trash and debris from the drainage system. The parking
lots and driveways should be kept clean and in repair. Events such as
major storms or heavy winds will require immediate inspections for
damages.
To ensure proper water quality and treatment, the detention/wet-pond must
be properly maintained. Be careful to avoid introducing landscape fertilizer
to receiving waters or groundwater. If wet-pond side slopes become
eroded over 2" deep, stabilize by using appropriate erosion control
measures (e.g., rock reinforcement, planting of grass, compaction).
Catch basins shall be cleaned when sump is 1/3' full of sediment or debris.
Person of Responsibility:
Evergreen-Tucci Partners
1302 Puyallup Ave.
Sumner, WA. 98390
253-863-6200
Design Engineer:
Apex Engineering PLLC
2601 S.35 th Street, Suite 200
Tacoma, WA. 98409
253-473-4494
Plan and/or Information Updates:
The City of Auburn Storm Drainage Utility section is to review and approve
any changes to this Storm Water Pollution Prevention Plan prior to changes
in its implementation. Additionally, any changes in ownership or person of
responsibility are to be reported to the City Storm Drainage Utility section.
Storm Water Easement and Maintenance Agreement
Page 8 of 17
INSPECTION/MAINTENANCE CHECKLIST
STRUCTURE
DATE OF INSPECTIONWAINTENANCE
Results/
Maintenance
Date
Inspection
All Catch Basins
Results
Maintenance
Done
Storm Detention/
Inspection
Wet-pond
Results
Maintenance
Done
Inspection
Conveyance Pipes
Results
Maintenance
Done
Flow Control
Inspection
Structure
Results
Maintenance
Done
Storm Water Easement and Maintenance Agreement.
Page 9 of 17
Maintenance Standards for Drainage Facilities:
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, exceeding 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 - Detention Ponds
Maintenance
Defect
Conditions When Maintenance Is
Results Expected,lNhen
"
Component
Needed
Maintenance Is P rfor d
General
Trash & Debris
Any trash and debris, which exceed
Trash and debris cleared from site.
5 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 weeds
hazard to maintenance personnel or
public might normally be. (Coordinate
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
acre-feet.)
Storm Water Easement and Maintenance Agreement
Page 10 of 17
No.1 - Detention Ponds
Maintenance Defect Conditions When Maintenance Is
Component Needed
Beaver Dams Dam results in change or function of
the facility.
Insects
Tree Growth
and Hazard
Trees
Side Slopes I Erosion
of Pond
Storage Area I Sediment
When insects such as wasps and
hornets interfere with maintenance
activities.
Tree growth does not allow
maintenance access or interferes
with maintenance activity (i.e., slope
mowing, silt removal, vactoring, or
equipment movements). If trees are
not interfering with access or
maintenance,-do not remove. _
If dead, diseased, or dying trees are
identified.
(Use a certified Arborist to determine
health of tree or removal
requirements.)
Eroded damage over 2 inches deep
where cause of damage is still
present or where there is potential for
continued erosion. .
Any erosion observed on a
compacted berm embankment.
Accumulated sediment that exceeds
10% of the designed pond depth
unless otherwise specified or affects
inletting or outletting condition of the
facility.
Liner (If
Applicable)
Liner is visible and has more than
three 1/4-inch holes in it.
Results Expected When
Maintenance Is Performed
Facility is returned to design function.
(Coordinate trapping of beavers and
removal of dams with appropriate
permitting agencies.)
Insects destroyed or removed from
site.
Apply insecticides in compliance with
adopted IPM policies.
Trees do not hinder maintenance
activities. Harvested trees should be
recycled into mulch or other beneficial
uses (e.g., alders for firewood).
Remove hazard trees
- -1 , - , , t
Slopes should be stabilized using
appropriate erosion control measure(s);
e.g., rock reinforcement, planting of
grass, compaction.
If erosion is occurring on compacted
berms a licensed civil engineer should
be consulted to resolve source of
erosion.
Sediment cleaned out to designed
pond shape and depth; pond reseeded
if necessary to control erosion.
Liner repaired or replaced. Liner is
fully covered.
Storm Water Easement and Maintenance Agreement
Page 11 of 17
No.1 - Detention Ponds
Maintenance ( Defect ) Conditions When Maintenance Is Results Expectedhen i yl
Component Needed Maintenance 1s?Peffor~med
Pond Berms
(Dikes)
Settlements
Any part of berm that has settled 4
inches lower than the design
elevation.
Dike is built back to the design
elevation.
Emergency
Overflow/
Spillway and
Berms over 4
feet in height.
Emergency
Overflow/
Spillway
Piping
Tree Growth
Piping
Emergency
Overflow/
Spillway
Erosion
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.
Discernable water flow through pond
berm. Ongoing erosion with potential
for erosion to continue.
Piping eliminated. Erosion potential
resolved.
(Recommend a Goethechnical
engineer be called in to inspect and
evaluate condition and recommend
repair of condition.
Tree growth on emergency spillways
creates blockage problems and may
cause failure of the berm due to
uncontrolled overtopping.
Tree growth on berms over 4 feet in
height may lead to piping through the
berm which could lead to failure of
the berm.
Trees should be removed. If root
system is small (base less than 4
inches) the root system may be left in
place. Otherwise the roots should be
removed and the berm restored. A
licensed civil engineer should be
consulted for proper berm/spillway
restoration.
Discernable water flow through pond
berm. Ongoing erosion with
potential for erosion to continue.
Piping eliminated. Erosion potential
resolved.
(Recommend a Goethechnical
engineer be called in to inspect and
evaluate condition and recommend
repair of condition.
Only one layer of rock exists above
native soil in area five square feet or
larger, or any exposure of native soil
at the top of out flow path of spillway.
(Riprap on inside slopes need not be
replaced.)
Rocks and pad depth are restored to
design standards.
See "Side Slopes of Pond."
Storm Water Easement and Maintenance Agreement
Page 12 of 17
No. 4 - Control. Structure/Flow Restrictor
.Maintenance
Defect
Condition When Maintenance is Needed
Results Expected
Component
When Maintenance
is Performed
General
Trash and Debris
Material exceeds 25% of sump depth or 1
Control structure
(Includes Sediment)
foot below orifice plate.
orifice is not blocked.
All trash and debris
removed.
Structural Damage
Structure is not securely attached to
Structure securely
manhole wall.
attached to wall and
outlet pipe.
Structure is not in upright position (allow up
Structure in correct
to 10% from plumb).
position.
Connections to outlet pipe are not watertight
Connections to outlet
and show signs of rust.
pipe are watertight;
structure repaired or
replaced and works
as designed.
Any holes, other than designed holes, in the
Structure has no
structure.
holes other than
designed holes.
Cleanout Gate
Damaged or Missing
Cleanout gate is not watertight or is missing.
Gate is watertight
and works as
designed.
One maintenance person cannot move up
Gate moves up and
and down gate.
down easily and is
watertight.
Chain/rod leading to gate is missing or
Chain is in place and
damaged.
works as designed.
Gate is rusted over 50% of its surface area.
Gate is repaired or
replaced to meet
design standards.
Orifice Plate
Damaged or Missing
Control device is not working properly due
Plate is in place and
to missing, out of place, or bent orifice plate.
works as designed.
Obstructions
Any trash, debris, sediment, or vegetation
Plate is free of all
blocking the plate.
obstructions and
works as designed.
Overflow Pipe
Obstructions
Any trash or debris blocking (or having the
Pipe is free of all
potential of blocking) the overflow pipe.
obstructions and
works as designed.
Manhole
See "Closed .
See "Closed Detention Systems" (No. 3).
See "Closed
Detention Systems"
Detention Systems"
(No. 3).
(No. 3).
Catch Basin
See "Catch Basins"
See "Catch Basins" (No. 5).
See "Catch Basins"
(No. 5).
(No. 5).
Storm Water Easement and Maintenance Agreement
Page 13 of 17
No. 5 - Catch Basins
Maintenance
Component
Defect
Conditions When Maintenance is Needed
Results Expeeted~When`'Y
Main tenane`e is
performed.
General
Trash &
Trash or debris which is located immediately
No Trash or debris
Debris
in front of the catch basin opening or is
located immediately in
blocking inletting capacity of the basin by
front of catch basin or on
more than 10%.
grate opening.
Trash or debris (in the basin) that exceeds 60
No trash or debris in the
percent of the sump depth as measured from
catch basin.
the bottom of basin to invert of the lowest
pipe into or out of the basin, but in no case
less than a minimum of six inches clearance
from the debris surface to the invert of the
lowest pipe.
Trash or debris in any inlet or outlet pipe
Inlet and outlet pipes free
blocking more than 113 of its height.
of trash or debris.
Dead animals or vegetation that could
No dead animals or
generate odors that could cause complaints
vegetation present within
or dangerous gases (e.g., methane).
the catch basin.
Sediment
Sediment (in the basin) that exceeds 60
No sediment in the catch
percent of the sump depth as measured from
basin.
the bottom of basin to invert of the lowest
pipe into or out of the basin, but in no case
less than a minimum of 6 inches clearance
from the sediment surface to the invert of the
lowest pipe.
Structure
Top slab has holes larger than 2 square
Top slab is free of holes
Damage to
inches or cracks wider than 1/4 inch.
and cracks.
Frame and/or
Top Slab
(Intent is to make sure no material is running
into basin).
Frame not sitting flush on top slab, i.e.,
Frame is sitting flush on
separations of more than 3/4 inch of the
the riser rings or top slab
frame from the top slab. Frame not securely
and firmly attached.
attached
Fractures or
Maintenance person judges that structure is
Basin replaced or
Cracks in
unsound.
repaired to design
Basin Walls/
standards.
Bottom
Grout fillet has separated or cracked wider
Pipe is regrouted and
than 1/2 inch and longer than 1 foot at the
secure at basin wall.
joint of any inlet/outlet pipe or any evidence
of soil particles entering catch basin through
cracks.
Settlement/
If failure of basin has created a safety,
Basin replaced or
Misalignment
function, or design problem.
repaired to design
standards.
Vegetation
Vegetation growing across and blocking
No vegetation blocking
more than 10% of the basin opening.
the opening to basin.
Storm Water Easement and Maintenance Agreement
Page 14 of 17
No. 5 - Catch Basins
Maintenance
Defect
Conditions When Maintenance is Needed
Results Expected When
Component
Maintenance is
performed
Vegetation growing in inlet/outlet pipe joints
No vegetation or root
that is more than six inches tall and less than
growth present.
six inches apart.
Contamination
See "Detention Ponds" (No. 1).
No pollution present.
and Pollution
Catch Basin
Cover Not in
Cover is missing or only partially in place.
Catch basin cover is
Cover
Place
Any open catch basin requires maintenance.
closed.
Locking
Mechanism cannot be opened by one
Mechanism opens with
Mechanism
maintenance person with proper tools. Bolts
proper tools.
Not Working
into frame have less than 1/2 inch of thread.
Cover Difficult
One maintenance person cannot remove lid
One maintenance person
to Remove
after applying normal lifting pressure.
can remove cover.
-
-(Intent-is-keep-cover_from-sealing-off_access-
to maintenance.)
Ladder
Ladder Rungs
Ladder is unsafe due to missing rungs, not
Ladder meets design
Unsafe
securely attached to basin wall,
standards and allows
misalignment, rust, cracks, or sharp edges.
maintenance person safe
access.
Metal Grates
Grate opening
Grate with opening wider than 7/8 inch.
Grate opening meets'
(If Applicable).
Unsafe
design standards.
Trash and
Trash and debris that is blocking more than
Grate free of trash and
Debris
20% of grate surface inletting capacity.
debris.
Damaged 'or
Grate missing or broken member(s) of the
Grate is in place and
Missing.
grate.
meets design standards.
Storm Water Easement and Maintenance Agreement
Page 15 of 17
No. 6 - Debris Barriers (e.g., Trash Racks)
Maintenance
Defect
Condition When Maintenance is
Results EzpectedaWhen
Components
Needed
Maintenance is Pe ormed
General
Trash and
Trash or debris that is plugging more
Barrier cleared to design flow
Debris
than 20% of the openings in the barrier.
capacity.
Metal
Damaged/
Bars are bent out of shape more than 3
Bars in place with no bends more
Missing
inches.
than 3/4 inch.
Bars.
Bars are missing or entire barrier
Bars in place according to design.
missing.
Bars are loose and rust is causing 50%
Barrier replaced or repaired to
deterioration to any part of barrier.
design standards.
Inlet/Outlet
Debris barrier missing or not attached to
Barrier firmly attached to pipe.
Pipe
pipe.
Storm Water Easement and Maintenance Agreement
Page 16 of 17
No. 11 - Wet-ponds
Maintenance
Defect
Condition When Maintenance
Results Expected When Maintenance
Component
is Needed
is Performed
General
Water level
First cell is empty, doesn't hold
Line the first cell to maintain at least 4
water.
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
Trash and debris removed from pond.
Debris
CF per 1000-SF of pond area.
Inlet/Outlet
Inlet/outlet pipe clogged with
No clogging or blockage in the inlet and
Pipe
sediment and/or debris
outlet piping.
material.
Sediment
Sediment accumulations in
Sediment removed from pond bottom.
Accumulation
pond bottom that exceeds the
in Pond
depth of sediment zone plus 6-
Bottom
inches, usually in the first cell.
- - -
-Gil-Sheenlon-
P=revalent-and-visible-oiksheen.-
-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 wetland plants
such as Juncus Effusus (soft rush) that
can uptake small concentrations of oil.
Erosion
Erosion of the pond's side
Slopes stabilized using proper erosion
slopes and/or scouring of the
control measures and repair methods.
pond bottom, that exceeds 6-
inches, or where continued
erosion is prevalent.
Settlement of
Any part of these components
Dike/berm is repaired to specifications.
Pond
that has settled 4-inches or
Dike/Berm
lower than the design elevation,
or inspector determines
dike/berm is unsound.
Internal Berm
Berm dividing cells should be
Berm surface is leveled so that water
level.
flows evenly over entire length of berm.
Overflow
Rock is missing and soil is
Rocks replaced to specifications.
Spillway
exposed at top of spillway or
outside slope.
Storm Water Easement and Maintenance Agreement
Page 17 of 17