HomeMy WebLinkAbout20050511002063 STORM EASEMENT 051105-7
Return Address:
City of Auburn
City Clerk
25 West Main
Auburn, WA 98001
Above this line reserved for recordine information.
STORM WATER EASEMENT AND MAINTENANCE AGREEMENT
FAC03-0011
Reference # (if applicable): N/A
Grantor/Borrower: Safeway Inc. (A Delaw go oratio
We Mod Grantee/Assignee/Beneficiary: City of Auburn I Dr
record by Pacific 1Vorthwe sf'. TWO as
Legal Description/STR: l~E '/4 25-21-04E room odation only. It has not
Assessor's Tax Parcel ID#: 22104-9096 examined as to proper exectOxi of
. THIS EASEMENT AND AGREEMENT made and entered into this t day of
April, 2005, by and between the City of Auburn, a municipal corporation of King County,
Washington, hereinafter referred to as "CITY" and Safeway Inc. (A Delaware Corporation)
hereinafter referred to as "PROPERTY OWNER".
WHEREAS, PROPERTY OWNER has applied for certain permits with the CITY
for the construction of facilities for Safeway Distribution Facility located at
3520 Pacific Avenue South, 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 20
PAGE001 OFF 020 38.00
05/11/2005 15:49
KING COUNTY, WA
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" 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.
03-0011, 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 "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
Storm Water Easement and Maintenance Agreement
Page 2 of 20
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.
IN WITNESS WHEREOF the Grantor has executed these presents this
Twelfth day of April, 2005.
Jer me Harrison - Assistant Vice President
Z.j
Linda S. MacDonald - Assistant Secretary
F#-JPO
CITY OF AUBURN
® 64~1 - V !S-05-
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
.0 Q. tl
Y, for the uses and purposes mentioned in this instrument.
voluntary ac~t~ 4
Dated =e,•~~~~~o~
~ovkRy 9N
v
s
• o
;A
pia y~ r . 19
:o'!.•NNotary Public in and for the tate of Washington
Ilk ®~P*1 Residing at ---Fuq-x, eA L vI", 'i- y
My appointment expires t/ / 9 10'q-
Storm Water Easement and Maintenance Agreement
Page 3 of 20
ACKNOWLEDGMENT
STATE OF CALIFORNIA )
County of Alameda
ss.
On April 12, 2005 before me, Dina Gutierrez, Notary Public, personally appeared
Jerome P. Harrison and Linda S. MacDonald personally known to me (or proved
to me on the basis of satisfactory evidence) to be the persons whose names are
subscribed to the within instrument and acknowledged to me that they executed
the same in their authorized capacities, and that by their signatures on the
instrument the persons, or the entity upon behalf of which the persons acted,
executed the instrument.
WITNESS my hand and official seal
GoWoSSE®W 9322929
NOTARv PUBLIC-CALIFORNIA
AMEDA COI 1:0
My commission exps Sop9. 22, M
Signature (Seal)
CP/tlb
File: #928A
REF. H:DevelopmentTorms\Legal Documents\2005 (Rev. 11/04)
EXHIBIT `A'
Legal Description
ALL THOSE PORTIONS OF THE SOUTHEAST QUARTER AND OF THE
NORTHEAST QUARTER OF SECTION 25, TOWNSHIP 21 NORTH, RANGE 4 EAST,
WILLAMETTE MERIDIAN, KING COUNTY, WASHINGTON, MORE
PARTICULARLY DESCRIBED AS FOLLOWS:
COMMENCING AT THE SOUTHEAST CORNER OF SAID SECTION 25;
THENCE NORTH 89° 33'
10"
WEST, ALONG THE SOUTH LINE OF SAID
SOUTHEAST QUARTER, A DISTANCE OF 484.39 FEET;
THENCE NORTH 00° 26'
50"
EAST, 20.00 FEET TO THE POINT OF BEGINNING;
THENCE NORTH 89° 33'
10"
WEST, 1488.04 FEET;
THENCE NORTH 01 ° 12'
19"
EAST, 1299.17 FEET;
THENCE NORTH 89° 22'
50"
WEST, 638.13 FEET;
THENCE NORTH 01° 10'
46"
EAST, 735.47 FEET;
THENCE SOUTH 87° 40'
57"
EAST, 482.49 FEET;
THENCE NORTH 88° 48'
30"
EAST, 175.07 FEET;
THENCE SOUTH 01 ° 09'
16"
EAST, 175.10 FEET;
THENCE NORTH 88° 50'
44"
EAST, 502.22 FEET;
THENCE NORTH 01 ° 09'
16"
WEST 1327.45 FEET;
THENCE NORTH 58° 49'
13"
EAST, 453.08 FEET TO THE BEGINNING OF A 603.11
FOOT RADIUS CURVE TO THE LEFT;
THENCE ALONG THE ARC OF SAID CURVE, PASSING THROUGH A CENTRAL
ANGLE OF 59° 56'03", A
N A
RC DISTANCE OF 630.88 FEET;
THENCE NORTH 01 ° 06'
42"
WEST, 92.34 FEET;
Storm Water Easement and Maintenance Agreement
Page 4 of 20
THENCE SOUTH 89°
12'
14"
EAST, 57.79 FEET;
THENCE SOUTH 11 °
17'
51"
EAST, 741.68 FEET TO THE WEST MARGIN OF "C"
STREET SOUTHWEST;
THENCE SOUTH 01 °
10'
16"
EAST, ALONG SAID MARGIN 3260.26 FEET;
THENCE SOUTH 40°
42'
59"
WEST, 52.40 FEET;
THENCE SOUTH 89°
33'
10"
EAST, 35.00 FEET;
THENCE SOUTH 01 °
10'
16"
EAST, 25.00 FEET TO THE POINT OF BEGINNING.
Storm Water Easement and Maintenance Agreement
Page 5 of 20
EXHIBIT `B'
Site Sketch
1
N
SCALE
300 0 150, J00. : 600
. ( FEET
I'INCH 300 FT
Mile
fFe~"~au'.in:$:'
/
LTL, pt .IC
~I NOTE:
t -
SITE SECURITY. AND
MAINTAIN
1
=
THROU
..ACCESS GHOUT ALL
I
I
~
I.
PHASES OF CONSTRUCTION
~
I
COORDINA TE,ATMING AND . '
.
LOCATION OF ACCESS. ROUTES`
`
WITH SAFEWAY Wr-
~ e
r
J
e',~; AVN:. :(i~:1ij:1~
~i r4CS:?t~~~S ~i
l ?C• _
W
~
y
tSHOP
:GLEN TER
RR
k.
=
a
WAREHOUSE
II Z
REFRIGERATED
WAREHOUSE
-L-7II
i
wt
wxei
E
~i
ELlINGSr(Sf~`3~_ - - _I
~I
1
I I -
~I -
11
Storm Water Easement and Maintenance Agreement
Page 6 of 20
EXHIBIT `C'
STORM WATER POLLUTION PREVENTION
MAINTENANCE and OPERATION SCHEDULE
For the
Safeway Distribution Facility
SEP02-0012
FAC03-0011
GRA03-0008
Site Address:
The project is located in the Southeast Quarter of Section 25, Township 21
North, Range 4 East, W.M., 3520 Pacific Avenue South. The tax parcel
number is 2521049096.
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 Safeway Distribution Center located at
3520 Pacific Avenue South. The site has an area of approximately 106
acres and is currently old buildings and paving from the Boeing operations.
The subject site will be developed as a distribution center.
The subject site is mainly paving, rock and existing buildings.
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 and wetpond located on the south side of the site.
From the southwest corner of the storm water detention pond, storm water
will be released into a 36-inch conveyance pipe which passes under
Ellingson Road. Flows released through the 36-inch pipe flow to an open
channel south of Ellingson Road called the "East Ditch." From the East
Ditch storm water flows toward the west to an open canal called
"Government Canal".
Storm Water Easement and Maintenance Agreement
Page 7 of 20
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, August 2001)
No. 1 - Detention Pond
No. 4 - Control Structure/Flow Restrictor
No. 5 - Catch Basins
No. 6 - Debris Barrier
No. 7 - Energy Dissipator
No. 11 - Wetpond
No. 17 - Coalescing Plate Oil/Water Separator
Treatment BMP'S:
A 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
Storm Water Easement and Maintenance Agreement
Page 8 of 20
section.
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:
Safeway, Inc.
3520 Pacific Avenue South
Auburn, WA. 98002
Attn: Brian Langlais (253)299-5030
Design Engineer:
W&H Pacific, Inc
3350 Monte Villa Parkway
Bothell, WA. 98021
(425) 951-4800
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 9 of 20
INSPECTION/MAINTENANCE CHECKLIST
STRUCTURE
DATE OF INSPECTION/MAINTENANCE
Results/
Maintenance
Date
Inspection
Catch Basins
Results
Maintenance
Done
Detention/ Wetpond
Inspection
Results
Maintenance
Done
Inspection
Conveyance Pipes
Results
Maintenance
Done
Control
Inspection
Structure/Flow
Results
Restrictor
Maintenance
Done
Debris Barrier
Inspection
Results
Maintenance
Done
Energy Dissipator
Inspection
Results
Maintenance
Done
Oil/Water Separator
Inspection
Results
Maintenance
Done
Storm Water Easement and Maintenance Agreement
Page 10 of 20
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 & 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
of adopted IPM
(Apply requirements P
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 11 of 20
No. 1- Detention Ponds
Maintenance
Defect
Conditions When Maintenance Is
Results Expected When
Component
Needed
Maintenance Is Performed
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
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.
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 20
No.1- Detention Ponds
Maintenance Defect
Component
Pond Berms Settlements
(Dikes)
Conditions When Maintenance Is
Needed
Any part of berm that has settled 4
inches lower than the design
elevation.
If settlement is apparent, measure
berm to determine amount of
settlement.
Emergency
Overflow/
Spillway and
Berms over 4
feet in height.
Emergency
Overflow/
Spillway
Piping
Tree Growth
Piping
Emergency
Overflow/
Spillway
Erosion
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.
Results Expected When
Maintenance Is Performed
Dike is built back to the design
elevation.
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.
Rocks and pad depth are restored to
design standards.
(Riprap on inside slopes need not be
replaced.)
See "Side Slopes of Pond."
Storm Water Easement and Maintenance Agreement
Page 13 of 20
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 14 of 20
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 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 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 (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.
opening to basin.
Storm Water Easement and Maintenance Agreement
Page 15 of 20
No. 5 - Catch Basins
Maintenance
Defect
Conditions When Maintenance is Needed
Results Expected When
Component
Maintenance is
performed
Vegetation growing in inlettoutlet 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 20
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.
No. 7 - Energy Dissipaters
Maintenance
Defect
Conditions When Maintenance is
Results Expected When
Components
Needed
Maintenance is Performed
External:
Rock Pad
Missing or
Only one layer of rock exists above
Rock pad replaced to design
Moved Rock
native soil in area five square feet or
standards.
larger, or any exposure of native soil.
Erosion
Soil erosion in or adjacent to rock pad.
Rock pad replaced to design
standards.
Dispersion Trench
Pipe
Accumulated sediment that exceeds
Pipe cleaned/flushed so that it
Plugged with
20% of the design depth.
matches design.
Sediment
Not
Visual evidence of water discharging at
Trench redesigned or rebuilt to
Discharging
concentrated points along trench
standards.
Water
(normal condition is a "sheet flow" of
Properly
water along trench). Intent is to prevent
erosion damage.
Perforations
Over 1/2 of perforations in pipe are
Perforated pipe cleaned or
Plugged.
plugged with debris and sediment.
replaced.
Water Flows
Maintenance person observes or
Facility rebuilt or redesigned to
Out Top of
receives credible report of water flowing
standards.
"Distributor"
out during any storm less than the
Catch Basin.
design storm or it's causing or appears
likely to cause damage.
Receiving
Water in receiving area is causing or has
No danger of landslides.
Area Over-
potential of causing landslide problems.
Saturated
Storm Water Easement and Maintenance Agreement
Page 17 of 20
No. 7 - Energy Dissipaters
Maintenance
Defect
Conditions When Maintenance is
Results Expected When
Components
Needed
Maintenance is Performed
Internal:
Manhole/Chamber
Worn or
Structure dissipating flow deteriorates to
Structure replaced to design
Damaged
1/2 of original size or any concentrated
standards.
Post,
worn spot exceeding one square foot
Baffles, Side
that would make structure unsound.
of Chamber
Other
See "Catch Basins" (No. 5).
See "Catch Basins" (No. 5).
Defects
Storm Water Easement and Maintenance Agreement
Page 18 of 20
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 ofspillway or
outside slope.
Storm Water Easement and Maintenance Agreement
Page 19 of 20
No. 17 - Coalescing Plate OiUWater Separators
Maintenance Defect
Component
General Monitoring
Sediment
Accumulation
Trash and Debris
Accumulation
Oil Accumulation
Damaged
Coalescing Plates
Damaged Pipes
Baffles
Vault Structure
Damage-
Includes Cracks in
Walls, Bottom,
Damage to Frame
and/or Top Slab
Access Ladder
Damaged
Condition When Maintenance is Results Expected When
Needed Maintenance is Performed
Inspection of discharge water for I Effluent discharge from vault
obvious signs of poor water should be clear with no thick visible
quality. sheen.
Sediment depth in bottom of vault
exceeds 6-inches in depth and/or
visible signs of sediment on
plates.
No sediment deposits on vault
bottom and plate media, which
would impede flow through the
vault and reduce separation
efficiency.
Trash and debris accumulated in
vault, or pipe inlet/outlet,
floatables and non-floatables.
Oil accumulation that exceeds 1-
inch at the water surface.
Plate media broken, deformed,
cracked and/or showing signs of
failure.
Inlet or outlet piping damaged or
broken and in need of repair.
Baffles corroding, cracking,
warping and/or showing signs of
failure as determined by
maintenance/inspection person.
Cracks wider than 1/2-inch or
evidence of soil particles entering
the structure through the cracks,
or maintenance/inspection
personnel determine that the vault
is not structurally sound.
Cracks wider than 1/2-inch at the
joint of any inlet/outlet pipe or
evidence of soil particles entering
through the cracks.
Ladder is corroded or
deteriorated, not functioning
properly, not securely attached to
structure wall, missing rungs,
cracks, and misaligned.
Trash and debris removed from
vault, and inlet/outlet piping.
Oil is extracted from vault using
vactoring methods. Coalescing
plates are cleaned by thoroughly
rinsing and flushing. Should be no
visible oil depth on water.
A portion of the media pack or the
entire plate pack is replaced
depending on severity of failure.
Pipe repaired and or replaced.
Baffles repaired or replaced to
specifications.
Vault replaced or repairs made so
that vault meets design
specifications and is structurally
sound.
Vault repaired so that no cracks
exist wider than 1/4-inch at the joint
of the inlet/outlet pipe.
Ladder replaced or repaired and
meets specifications, and is safe to
use as determined by inspection
personnel.
Storm Water Easement and Maintenance Agreement
Page 20 of 20