HomeMy WebLinkAbout20090923000634 STORM WATER EASEMENT AND MAINTENANCE AGREMENT 091809Return Address:
City of Auburn
City Clerk
25 West Main
Auburn, WA 98001
EXCISE TAX NOT REQUIRED
KNtp Co, Rocot~ D
Above this line reserved for recording information.
STORM WATER EASEMENT AND MAINTENANCE AGREEMENT
KCP09-0001 N1' Ei v,d(iiiT-lWES T 1! C-
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Reference # (if applicable): N/A
Grantor/Borrower: Auburn School District No. 408
Grantee/Assignee/Beneficiary: City of Auburn
Legal Description/STR: N NE'/. S 4, ,T2 T21
N, RSE 2 ~
Assessor's Tax ParcelID#: 0421059057
THIS EASEMENT AND AGREEMENT made and entered into this 17~day of
5e Pte-rn b{ ✓ , 2009, by and between the City of Auburn, a municipal corporation
of King County, Washington, hereinafter referred to as "CITY" and
Auburn School District hereinafter referred to as "PROPERTY OWNER".
WHEREAS, PROPERTY OWNER has applied for certain permits with the CITY
for the construction of facilities for Arthur Jacobsen Elementary School located at
29205132 "d Avenue SE, 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
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
Storm Water Easement and Maintenance Agreement
Page 1 of 21
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, 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
parties.
This Agreement shall be binding upon the heirs, successors and assigns of the
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. 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.
Storm Water Easement and Maintenance Agreement
Page 2 of 21
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.
CITY OF AUBURN
----Tim Carlaw, Storm Drainage Engineer to
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 l i y
.~~~pppNNN n /
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zzii Witt ~'4ry~ DF`W PS~`~
Notary Publi2-#n-m
Residing at j
My appointment e:
/1 e: k l
Storm Water Easement and Maintenance Agreement
Page 3 of 21
AUBURN SCHOOL DISTRICT NO. 408,
a municipal corporation of the State of Washington
D. K. Herren Date
Superintendent
STATE OF WASHINGTON)
) ss
COUNTY OF KING )
I certify that I know or have satisfactory evidence that Z~Znn 1 ib kjo ><}d r-(-m J
is the person who appeared before me, and said person acknowledged that they signed this
instrument, on oath stated that they were authorized to execute the instrument and
acknowledged it as the Superintendent of the Auburn School District No. 408,
a municipal corporation, to be the free and voluntary act of such party for the uses and
purposes mentioned in this instrument.
Dated q11-716 f
kh-Au
--Debbiy. L Lz4htrm
Notary Public in and for he State of Washington
Residing at `aTL2,a& VAV-Z*
My appointment expires 0-19-.V6I1
KT/tlb
REF. H:\Development\Projects\Aubum School Distrieftegal Documents\2009
Storm Water Easement and Maintenance Agreement
Page 4 of 21
EXHIBIT 'A'
THAT PORTION OF THE NORTH HALF OF THE SOUTHEAST QUARTER OF THE
NORTHEAST QUARTER OF SECTION 4, TOWNSHIP 21 NORTH, RANGE 5 EAST OF THE
WILLAMETTE MERIDIAN, KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS
BEGINNING AT THE NORTHWEST CORNER OF SAID NORTH HALF OF THE SOUTHEAST
QUARTER OF THE NORTHEAST QUARTER OF SECTION 4, TOWNSHIP 21 NORTH, RANGE 5
EAST OF THE WILLAMETTE MERIDIAN,
THENCE SOUTH 870 36'42" EAST ALONG THE NORTH LINE OF SAID SUBDIVISION
1291 67 FEET TO THE WEST MARGIN OF 132ND AVENUE EAST (LOCATED 30 FEET WESTERLY
OF THE EAST LINE OF SAID SECTION 4),
THENCE SOUTH 010 29'46" WEST ALONG SAID WEST MARGIN 337 77 FEET TO A LINE
PARALLEL WITH AND 337 73 FEET SOUTHERLY (WHEN MEASURED AT RIGHT ANGLES) OF
SAID NORTH LINE OF SAID SUBDIVISION,
THENCE NORTH 870 36'42" WEST ALONG SAID PARALLEL LINE 1292 14 FEET TO THE
WEST LINE OF THE SOUTHEAST QUARTER OF THE NORTHEAST QUARTER OF SAID SECTION 4,
THENCE NORTH 010 34'25" EAST ALONG SAID WEST LINE 337 76 FEET TO THE POINT
OF BEGINNING
EXCEPT THAT PORTION DEDICATED TO KING COUNTY FOR ROAD PURPOSES.
SITUATE IN KING COUNTY, WASHINGTON
THE BASIS OF BEARINGS AND THE SECTION BREAKDOWN USED FOR THIS
DESCRIPTION IS RECORD OF SURVEY FILED IN BOOK 142 OF SURVEYS AT PAGE 12 UNDER
RECORDING NUMBER 20001212900014, RECORDS OF KING COUNTY, WASHINGTON
Storm Water Easement and Maintenance Agreement
Page 5 of 21
EXHIBITS'
MATCH LINE `A'
Storm Water Easement and Maintenance Agreement
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MATCH LINE 'A'
MATCH LINE 'B'
Storm Water Easement and Maintenance Agreement
Page 7 of 21
MATCH LINE 'B'
Storm Water Easement and Maintenance Agreement
Page 8 of 21
EXHIBIT `C'
STORMWATER POLLUTION PREVENTION
MAINTENANCE and OPERATION SCHEDULE
for
Arthur Jacobsen Elementary School
KCP09-0001
Site Address:
The project is located in NE1/4 of Section 4 Township 21 North Range 5
East, W.M., 29205 132nd Avenue SE, Auburn, WA 98092. The tax parcel
number is 0421059057.
Introduction:
This report has been prepared to address the City of Auburn's storm
drainage and pollution prevention requirements for Arthur Jacobsen
Elementary School located at 29205 132"d Avenue SE, Auburn, WA 98092.
The site has an area of approximately 10.02 acres and was previously
developed as a single-family residence with a shop-like out building that
was demolished.
The subject site consists of a new two-story elementary school building,
portable classrooms, play structures, basketball courts, sports courts,
pedestrian walkways, a bus drop-off area, and staff and visitor parking.
According to the City of Auburn's Construction Standards for stormwater
management, the City requires stormwater quantity and quality control to all
proposed developments. The site is designed to collect all of the
stormwater runoff from the landscaped, building, and pavement areas in a
series of catch basins. This water is conveyed by storm drainage pipe to a
stormwater combination wetpond detention facility located at the east end
of the parcel along 132nd Avenue SE. Here the stormwater is released into
a 12-inch storm drainage line running to the north approximately 460 feet.
The storm system outfalls to a conveyance system on the west ditch line of
132nd Avenue SE. A wet vault is situated in combination with the detention
vault to treat runoff from the 132nd Avenue SE improvements. This system
discharges to a 12-inch storm drainage line that also connects to the
conveyance system located in the ditch line of 132nd Avenue SE.
Storm Water Easement and Maintenance Agreement
Page 9 of 21
Plan Goal:
The specific purpose for the stormwater 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 that offers guidelines to the owner for
stormwater facility maintenance.
Prevention BMPs:
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 providing spill control
procedures. In case of spill, call the Department of Ecology 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 Stormwater Pollution Prevention Plan and attachments.
• Maintenance Standards for Drainage Facilities (from the Department
of Ecology Stormwater Manual, August 2001)
No. 1 - Detention Pond
No. 4 - Control Structure/Flow Restrictor
No. 5 - Catch Basins
No. 6 - Debris Barriers
No. 11 - Wetpond
No. 12 -Wet Vault
Treatment BMPs:
A combination wetpond/detention pond and a wet vault have been installed
to treat runoff for conventional pollutants. The wetpond and wet vault were
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 2-year through 50-year
historic durations and matches historic 2- and 10-year peaks.
The City of Auburn Storm Drainage Utility section is to review and approve
any changes to this Stormwater 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 10 of 21
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 combination
wetpond/detention pond and wet vault must be properly maintained. Be
careful to avoid introducing landscape fertilizer to receiving waters or
groundwater. If wetpond side slopes become eroded over 2 inches deep,
stabilize by using appropriate erosion control measures (e.g., rock
reinforcement, planting of grass, compaction).
Catch basins shall be cleaned when sump is one-third of one foot full of
sediment or debris.
Person of Responsibility:
Jeffrey L. Grose
Executive Director of Capital Projects
Auburn School District
915 Fourth Street NE
Auburn, WA 98002
(253) 931-4826
Design Engineer:
Doreen S. Gavin, PE, LEED® AP
Vice President
AHBL, Inc.
2215 N. 301h Street, Suite 300
Tacoma, WA 98403
(253) 383-2422
Storm Water Easement and Maintenance Agreement
Page 1 1 of 21
Plan and/or Information Updates:
The City of Auburn Storm Drainage Utility section is to review and approve
any changes to this Stormwater 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.
INSPECTION/MAINTENANCE CHECKLIST
STRUCTURE
Results/
.Maintenance
Date
Detention Pond
Inspection
Results
Maintenance
Done
Flow Control
Inspection
Structure
Results
Maintenance
Done
All Catch Basins
Inspection
Results
Maintenance
Done
Debris Barriers
Inspection
Results
Maintenance
Done
Wetpond
Inspection
Results
Maintenance
Done
Wet Vault
Inspection
Results
Maintenance
Done
Storm Water Easement and Maintenance Agreement
Page 12 of 21
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
General
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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 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 13 of 21
No.1- Detention Ponds
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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, vaotoring, 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
10% of the designed pond depth
pond shape and depth; pond reseeded
unless otherwise specified or affects
if necessary to control erosion.
inletling or outletling 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 14 of 21
No.1- Detention Ponds
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Pond Berms
Settlements
Any part of berm that has settled
Dike is built back to the design
(Dikes)
4 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
uncontrolled overtopping.
place. Otherwise, the roots should be
4 feet in
removed and the berm restored. A
height.
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. Ongoing erosion with
resolved.
potential for erosion to continue.
(Recommend a Goethechnioal
engineer be called in to inspect and
evaluate condition and recommend
repair of condition.
Emergency
Overflow/
Emergency
Only one layer of rock exists above
Rocks and pad depth are restored to
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 15 of 21
No. 4 - Control Structure/Flow Restrictor
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General
Trash and
Material exceeds 25%0 of sump depth
Control structure orifice is not blocked.
Debris (Includes
or 1 foot below orifice plate.
All trash and debris removed.
Sediment)
Structural
Structure is not securely attached to
Structure securely attached to wall and
Damage
manhole wall.
outlet pipe.
Structure is not in upright position
Structure in correct position.
(allow up to 10% from plumb).
Connections to outlet pipe are not
Connections to outlet pipe are
watertight and show signs of rust.
watertight; structure repaired or
replaced and works as designed.
Any holes, other than designed
Structure has no holes other than
holes, in the structure.
designed holes.
Cleanout
Damaged or
Cleanout gate is not watertight or is
Gate is watertight and works as
Gate
Missing
missing.
designed.
One maintenance person cannot
Gate moves up and down easily and is
move up and down gate.
watertight.
Chain/rod leading to gate is missing
Chain is in place and works as
or damaged.
designed.
Gate is rusted over 50% of its surface
Gate is repaired or replaced to meet
area.
design standards.
Orifice Plate
Damaged or
Control device is not working properly
Plate is in place and works as
Missing
due to missing, out of place, or bent
designed.
orifice plate.
Obstructions
Any trash, debris; sediment, or
Plate is free of all obstructions and
vegetation blocking the plate.
works as designed.
Overflow Pipe
Obstructions
Any trash or debris blocking (or
Pipe is free of all obstructions and
having the potential of blocking) the
works as designed.
overflow pipe.
Manhole
See "Closed
See "Closed Detention Systems"
See "Closed Detention Systems"
Detention
(No. 3).
(No. 3).
Systems"
(No. 3).
Catch Basin
See "Catch
See "Catch Basins" (No. 5).
See "Catch Basins" (No. 5).
Basins"
(No. 5).
Storm Water Easement and Maintenance Agreement
Page 16 of 21
No. 5 -Catch Basins
General
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Trash & Debris
Trash or debris which is located
No Trash or debris located immediately
immediately in front of the catch
in front of catch basin or on grate
basin opening or is blocking inletting
opening.
capacity of the basin by more than
10%.
Trash or debris (in the basin) that
No trash or debris in the catch basin.
exceeds 60 percent of the sump
depth as measured 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
Inlet and outlet pipes free of trash or
pipe blocking more than 1/3 of its
debris.
height.
Dead animals or vegetation that
No dead animals or vegetation present
could generate odors that could
within the catch basin.
cause complaints or dangerous
gases (e.g., methane).
Sediment
Sediment (in the basin) that exceeds
No sediment in the catch basin.
60 percent of the sump depth as
measured 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 6 inches clearance from
the sediment surface to the invert of
the lowest pipe.
Structure
Top slab has holes larger than 2
Top slab is free of holes and cracks.
Damage to
square inches or cracks wider than
Frame and/or
1/4 inch.
Top Slab
(Intent is to make sure no material is
running into basin)..
Frame not sitting flush on top slab,
Frame is sitting flush on the riser rings
i.e., separations of more than 3/4
or top slab and firmly attached.
inch of the frame from the top slab.
Frame not securely attached
Fractures or
Maintenance person judges that
Basin replaced or repaired to design
Cracks in Basin
structure is unsound.
standards.
Walls/ Bottom
Grout fillet has separated or cracked
Pipe is regrouted and secure at basin
wider than 1/2 inch and longer than 1
wall.
foot at the joint of any inletloutlet pipe
or any evidence of soil particles
entering catch basin through cracks.
Storm Water Easement and Maintenance Agreement
Page 17 of 21
No. 5 - Catch Basins
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Settlement/
If failure of basin has created a
Basin replaced or repaired to design
Misalignment
safety, function, or design problem.
standards.
Vegetation
Vegetation growing across and
No vegetation blocking opening to
blocking more than 10% of the basin
basin.
opening.
Vegetation growing in inlet/outlet pipe
No vegetation or root growth present.
joints that is more than six inches tall
and less than 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
Catch basin cover is closed.
Cover
Place
place. Any open catch basin requires
maintenance.
Locking
Mechanism cannot be opened by one
Mechanism opens with proper tools.
Mechanism Not
maintenance person with proper
Working
tools. Bolts into frame have less than
1/2 inch of thread.
Cover Difficult
One maintenance person cannot
One maintenance person can remove
to Remove
remove lid after applying normal
cover.
lifting pressure.
(Intent is keep cover from sealing off
access to maintenance.)
Ladder
Ladder Rungs
Ladder is unsafe due to missing
Ladder meets design standards and
Unsafe
rungs, not securely attached to basin
allows maintenance person safe
wall, misalignment, rust, cracks, or
access.
sharp edges.
Metal Grates
Grate opening
Grate with opening wider than 7/8
Grate opening meets design standards.
(If Applicable)
Unsafe
inch.
Trash and
Trash and debris that is blocking
Grate free of trash and debris.
Debris
more than 20% of grate surface
inletting capacity.
Damaged or
Grate missing or broken member(s)
Grate is in place and meets design
Missing
of the grate.
standards. -
Storm Water Easement and Maintenance Agreement
Page 18 of 21
No. 6 - Debris Barriers (e.g., Trash Racks)
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General
Trash and
Trash or debris that is plugging more
Barrier cleared to design flow capacity.
Debris
than 20% of the openings in the
barrier.
Metal
Damaged/
Bars are bent out of shape more than
Bars in place with no bends more than
Missing Bars.
3 inches.
3/4 inch.
Bars are missing or entire barrier
Bars in place according to design.
missing.
Bars are loose and rust is causing
Barrier replaced or repaired to design
50% deterioration to any part of
standards.
barrier.
Inlet/Outlet Pipe
Debris barrier missing or not attached
Barrier firmly attached to pipe.
to pipe.
Storm Water Easement and Maintenance Agreement
Page 19 of 21
No. 11- Wetponds
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Water level
First cell is empty, does not 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 CF 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 and
sediment and/or debris material.
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 vector 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
Slopes stabilized using proper erosion
and/or scouring of the pond bottom,
control measures and repair methods.
that exceeds 6-inches, or where
continued erosion is prevalent.
Settlement of
Any part of these components that
Dike/berm is repaired to specifications.
Pond
has settled 4-inches or lower than the
Dike/Berm
design elevation, or inspector
determines dike/berm 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.
General
Storm Water Easement and Maintenance Agreement
Page 20 of 21
No. 12 -Wet Vaults
General
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Trash/Debris
Trash and debris accumulated in
Remove trash and debris from vault.
Accumulation
vault, pipe or inlet/outlet (includes
floatables and non-floatables).
Sediment
Sediment accumulation in vault
Remove sediment from vault.
Accumulation in
bottom exceeds the depth of the
Vault
sediment zone plus 6-inches.
Damaged Pipes
Inlet/outlet piping damaged or
Pipe repaired and/or replaced.
broken and in need of repair.
Access Cover
Cover cannot be opened or
Pipe repaired or replaced to proper
Damaged/Not
removed, especially by one person.
working specifications.
Working
Ventilation
Ventilation area blocked or plugged.
Blocking material removed or cleared
from ventilation area. A specified % of
the vault surface area must provide
ventilation to the vault interior (see
design specifications).
Vault Structure
Maintenance/inspection personnel
Vault replaced or repairs made so that
Damage-
determine that the vault is not
vault meets design specifications and is
Includes Cracks
structurally sound.
structurally sound.
in Walls Bottom,
Damage to
Frame and/or
Top Slab
Cracks wider than 1/2-inch at the
Vault repaired so that no cracks exist
joint of any inlet/outlet pipe or
wider than 1/4-inch at the joint of the
evidence of soil particles entering
inlet/outlet pipe.
through the cracks.
Baffles
Baffles corroding, cracking, warping
Baffles repaired or replaced to
and/or showing signs of failure as
specifications.
determined by
maintenance/inspection staff.
Access Ladder
Ladder is corroded or deteriorated,
Ladder replaced or repaired to
Damage
not functioning properly, not
specifications, and is safe to use as
attached to structure wall, missing
determined by inspection personnel.
rungs, has cracks and/or
Replace sign warning of confined space
misaligned. Confined space
entry requirements. Ladder and entry
warning sign missing.
notification complies with OSHA
standards.
Storm Water Easement and Maintenance Agreement
Page 21 of 21