HomeMy WebLinkAbout20150807000632 STORM WATER EASEMENT AND MAINT AGREE 02/03/2015 S w 3f-zL-04 ULO)
Return Address:
City Auburn II 101 II I III I I
1101110 I 10
City Clerk
25 West Main
Auburn, WA 98001
20150807000632
FIRST AMERICAN EAS 161.00
PAGE-001 OF 018
08/07/2015 12:02_
KING COUNTY, WA
•
Above this line reserved for recording information.
STORM WATER EASEMENT AND MAINTENANCE AGREEMENT
GRAI3-0013
Reference # (if applicable): N/A
Grantor/Borrower: DCT Auburn 44, LLC
•
Grantee/Assignee/Beneficiary: City of Auburn
Legal Description/STR: S36 - T22N - RO4E
Assessor's Tax Parcel 1D#: 362204-9021
THIS EASEMENT AND AGREEMENT made and entered into this 3 day of
e.1)e_uit-e 1 , 2015, by and between the City of Auburn, a municipal
corporation of King County, Washington, hereinafter referred to as "CITY" and
DCT Auburn 44, LLC, a Delaware limited liability company, hereinafter referred to as
"PROPERTY OWNER".
WHEREAS, PROPERTY OWNER has applied for certain permits with the CITY
for the construction of facilities for The DCT Auburn 44 located at 813 44th Street NW,
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 nr
:1 ,t, ,Itrn.-nts were met,met,el
Page I of 18 .
reaitt:w ,,..::;ro:r�o�c tion or*
cXCISE TAX NOT REQUIRED u hvs not beer examined 0E
proper execution or as to its eftoat
Kin Co. Records on upon title.
By Deputy
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 "A" & "B" and on that portion of the property as showing on the approved Record
Drawings revised pursuant to construction records for the City of Auburn under Permit No.
GRA13-0013, 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" & `B" 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 "C" 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 facilities of other property owners.
Storm Water Easement and Maintenance Agreement
Page 2 of 18
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 CITY incur attorney's
fees and/or costs in enforcing the agreement and/or in maintaining or collecting maintenance
fees, the PROPERTY OWNER agrees to pay reasonable attorney's fees and all costs
incurred by the CITY.
Section 4, ACKNOWLEDGMENT OF OTHER ENFORCEMENT ACTIONS
PROPERTY OWNER acknowledges that there may be liability for violations of
codes that could result in additional 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.
rca- 121 20 I S-
Authorized Signature Date
Authorized Signature Date
STATE OF WASHINGTON )
) ss
COUNTY OF KING )
I certify that I know or have satisfactory evidence that >Ck vthAry“a-
are the persons who appeared before me, and said persons
acknowledged that they signed this instrument, on oath stated that they are the property
owners and as such are authorized to execute the instrument and acknowledged it as their
free and voluntary act for the uses and purposes mentioned in this instrument.
Dated '(2.7120c
unnttti
` ,s �PtNbEnN/ ,kp YL AA:t. 2. an► t
k9'•.m
m•
7. o = Notary Public in an44 fqr the State Washington
9T 1cQo o., o; Residing at P
,�® Sr12.• \�C;`. My appointment expires S / II/7 0 I
WABn
'stnit,ii
Storm Water Easement and Maintenance Agreement
Page 3 of 18
CITY OF AUBURN
773/r
1m Carlaw, Storm Drainage Engineer Date
STATE OF WASHINGTON )
)ss.
COUNTY OF KING )
I certify that I know or have satisfactory evidence that Tim Carlaw is the person 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 such party for the uses and purposes mentioned in this instrument.
Dated 4316_
x„t
to •N.) ''�% Notary Public in and for the State of Washington
i �'.► AUG Residing at I co. e a �r•U.,`F
tstai OZ = My appointment expires r , li9I&5J•/tit/0 1heASHNa.�'
MAB/TC/tlb
File: 1137
REF. 11:Development\Projects\DCT Auburn 44\Legal Documents\201S
Storm Water Easement and Maintenance Agreement
Page 4 of 18
EXHIBIT A
LEGAL DESCRIPTION
THAT PORTION OF LOT 2, CITY OF AUBURN SHORT PLAT NO. SPL00-0009,
RECORDED UNDER RECORDING NO. 20020307001214, BEING A PORTION OF
LOT 3 OF CITY OF AUBURN LOT LINE ADJUSTMENT NO. LLA 0014-95, AS
RECORDED UNDER RECORDING NO. 96071 10147, RECORDS OF KING COUNTY,
WASHINGTON, MORE PARTICULARLY DESCRIBED AS FOLLOWS:
COMMENCING AT THE NORTHWEST CORNER OF SAID LOT 3; THENCE S
01°14'17" W ALONG THE EAST LINE THEREOF, A DISTANCE OF 899.63 FEET TO
THE POINT OF BEGINNING; THENCE N 89°15'49" W, 287.01 FEET; THENCE S
01°14'17" W, A DISTANCE OF 380.01 FEET TO THE NORTH MARGIN OF SOUTH
285TH STREET; THENCE S 89°15'49" E, 287.01 FEET ALONG THE SAID NORTH
MARGIN TO THE EAST LINE OF SAID LOT 3; THENCE N 01°14'17" E, ALONG
SAID EAST LINE, 380.01 FEET TO THE POINT OF BEGINNING.
Storm Water Easement and Maintenance Agreement
Page 5 of IA
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•
Scale: Fon Jab N1.mber
Karizanta, 1"A--804 Vertical DCT AUBURN 44 16379
PGHAf,@ MI5 7 ND A'vtNUE SOUPY 813-44TH STREET NW
✓aj .41. FZ (425)25;-6222
(425)251-87E2 FM Title' Shtct
rrtg# CIVIL ENGINEERING, LAND SITE PLAN
% „pp PLANNING, SURVEYING.
61°"' ENIRON.MENPL SEFMCES 1 ot. 1
Desiv'se'1 I Drawn t:P I Checked CP I hoproved CP I Date nn-az-13 i
Storm Water Easement and Maintenance Agreement
Page 6 of 18
EXHIBIT `C'
STORM WATER POLLUTION PREVENTION
MAINTENANCE and OPERATION SCHEDULE
for
DCT AUBURN 44
GRADING PERMIT No. GRA13-0013
Site Address:
The project is located in Section 36-Township 22N- Range 04E East,
W.M., 813 44th Street NW . The tax parcel number is 362204-9021
Introduction:
This storm water pollution prevention maintenance and operation schedule
has been prepared to address the City of Auburn's site development and
storm drainage requirements for the proposed DCT Auburn 44 building
located at 813 44th Street NW The site has an area of approximately 2.50
acres and is currently developed into an office warehouse building.
The subject site will consist of a single office warehouse building with
associated parking for automobiles and trucks. The site will be served by
public sanitary sewer, water main and a private storm system including a
storm detention/wetpond. .
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/wetpond located on the northern edge of the site.
Here the storm water will be released into a flood compensatory storage
pond which is connected to Mill Creek.
Storm Water Easement and Maintenance Agreement
Page 7 of 18
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.
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/wetpond, 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, February 2005)
No. 1 — Detention Pond
No. 4 — Control Structure/Flow Restrictor
No. 5 — Catch Basins
No. 6 — Debris Barriers (e.g., Trash Racks)
No. 11 — Wetpond
Treatment BMP'S:
A two-celled detention/wetpond has been installed to treat- runoff for
conventional pollutants. The wetpond 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 8 of 18
•
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/wetpond must
be properly maintained. Be careful to avoid introducing landscape fertilizer
to receiving waters or groundwater. If wetpond 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:
DCT Property Management
Eileen Galarza, Senior Property Manager
701 Fifth Avenue, Suite 2830
Seattle, WA 98104
(206) 753-0900
Design Engineer:
Barghausen Consulting Engineers, Inc.
18215 72nd Avenue South
Kent, WA 98032
425/ 251-6222
Storm Water Easement and Maintenance Agreement
Page 9 of 18
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 otr
person of responsibility are to be reported to the City Storm Drainage Utility
section.
INSPECTION/MAINTENANCE CHECKLIST
STRUCTURE DATE OF
INSPECTION/MAINTENANCE-It.
Results/
Maintenance Date
Inspection
All Catch Basins Results
Maintenance
Done
Storm Detention/ Inspection
Wetpond Results
Maintenance
Done
Inspection
Conveyance Pipes Results
Maintenance
Done
Flow Control Inspection
Structure Results
Maintenance
Done
Debris Inspection
Barriers/Trash Results
Racks
Maintenance
Done
Storm Water Easement and Maintenance Agreement
Page 10 of 18
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 When
Component Needed Maintenance Is Performed
General Trash & Any trash and debris which exceed 5 Trash and debris cleared from site.
Debris 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 vegetation which may constitute a where maintenance personnel or the
and 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
and Pollution contaminants or other pollutants. present.
(Coordinate removal/cleanup with
local water quality response agency).
Storm Water Easement and Maintenance Agreement
Page 11 of 18
•
No. 1 —Detention Ponds
Maintenance Defect Conditions When Maintenance Is Results Expected When
Component Needed Maintenance Is Performed
Rodent Holes Any evidence of rodent holes if Rodents destroyed and dam or berm
facility is acting as a dam or berm, repaired. (Coordinate with local health
or any evidence of water piping department; coordinate with Ecology
through dam or berm via rodent Dam Safety Office if pond exceeds 10
holes. acre-feet.)
Beaver Dams Dam results in change or function of Facility is 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
hornets interfere with maintenance site.
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, silt 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 of Erosion Eroded damage over 2 inches deep Slopes should be stabilized using
Pond where cause of damage is still appropriate erosion control
present or where there is potential measure(s); e.g., rock reinforcement,
for continued erosion. planting of 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
10% of the designed pond depth pond shape and depth; pond reseeded
unless otherwise specified or affects if necessary to control erosion.
inletting or outletting condition of the
facility.
Liner(If Liner is visible and has more than Liner repaired or replaced. Liner is
Applicable) three 1/4-inch holes in it. fully covered.
Storm Water Easement and Maintenance Agreement
Page 12 of 18
No. 1 -Detention Ponds
Maintenance Defect Conditions When Maintenance Is Results Expected When
Component Needed Maintenance Is Performed
Pond Berms Settlements Any part of berm that 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 consulted to
determine the source of the
settlement.
Piping Discernable water flow through pond Piping eliminated. Erosion potential
berm. Ongoing erosion with resolved.
potential 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 consulted for proper berm/spillway
the berm which could lead to failure restoration.
of the berm.
Piping Discernable water flow through pond Piping eliminated. Erosion potential
berm. Ongoing erosion with resolved.
potential for erosion to continue.
(Recommend a Geothechnical
engineer be called in to inspect and
evaluate condition and recommend
repair of condition.
Emergency Emergency Only one layer of rock exists above Rocks and pad depth are restored to
Overflow/ Overflow/ native soil in area five square feet or design standards.
Spillway Spillway larger, or any exposure of native soil
at the top of out flow path of
spillway.
(Riprap on inside slopes need not be
replaced.)
Erosion See"Side Slopes of Pond."
Storm Water Easement and Maintenance Agreement
Page 13 of 18
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 Connections to outlet
watertight 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 Gate is watertight
missing. 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 works as designed.
plate.
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 14 of 18
No. 5—Catch Basins
Maintenance Defect Conditions When Maintenance is Needed Results Expected When
Component Maintenance 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 No trash or debris in the
60 percent of the sump depth as measured catch basin.
from 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 1/3 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 On 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.
Storm Water Easement and Maintenance Agreement
Page 15 of 18
No.4-Control Structure/Flow Restrictor
Maintenance Defect Condition When Maintenance is Needed Results Expected
Component When Maintenance
is Performed
Vegetation Vegetation growing across and blocking No vegetation blocking
more than 10% of the basin opening. opening to basin.
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 16 of 18
No. 6— Debris Barriers (e.g., Trash Racks)
Maintenance Defect Condition When Maintenance is Results Expected When
Components Needed Maintenance is Performed
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 17of18
No. 11 -Wetponds
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.
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 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 18 of 18