HomeMy WebLinkAboutO&M ManualStormwater Infrastructure
Operations and Maintenance Manual
Carmel Clay Schools - Carmel high School
Natatorium Addition and Renovations
520 E. Main Street
Carmel, Indiana 46032
Owner:
Carmel Clay Schools
5201 E. Main Street
Carmel, Indiana 46033
TLF Project 2021-009
November 05, 2021
TLF, Inc.
3901 West 86th Street
Indianapolis, IN 46268
Phone (317) 334-1500
Fax (317) 334-1552
Page 1 of 24
Carmel Clay Schools
5185 E. Main Street
Carmel, Indiana 46033
TLF#2021-009 05-November 2021
TABLE OF CONTENTS
I. Owner Information
II. Site Information
III. BMP Owner Acknowledgement Agreement
IV. Storm Sewer Structure Maintenance
V. Storm Sewer Pipe Maintenance
VI. Aqua-Swirl (Hydrodynamic Separator) Maintenance
VII. Underground Detention Basin Maintenance
VIII. Site Diagrams and Stormwater Details
IX. Inspection and Maintenance Schedule
X. Sample Inspection Checklists
a. Storm Sewer Structure Inspection Checklist
b. Storm Sewer Pipe Inspection Checklist
c. Aqua-Swirl (Hydrodynamic Separator) Inspection Checklist
d. Underground Detention Basin Inspection Checklist
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TLF#2021-009 05-November 2021
I - OWNER INFORMATION
BMP Owner Name: Carmel Clay Schools
5201 E. Main Street
Carmel, Indiana 46033
Contact: TBD
General Information
The purpose of water quality Best Management Practices (BMPs) is to filter the first flush of
rainwater before it enters the downstream lakes and streams. Through the use of these BMPs,
the sediment and pollutant load in stormwater runoff is reduced, and in many cases the
quantity of stormwater runoff generated is also reduced. The use of BMPs also helps to reduce
hydrocarbons, trash, and debris from entering waterways.
Owner Responsibility
The BMP Owner shall be responsible for all maintenance and costs associated with the
proposed BMPs. In addition, it is the owner’s responsibility to perform and/or pay for
inspections and maintenance as recommended below.
Right of Entry
City of Carmel representatives have the right to enter the property to inspect and, if required,
maintain the BMPs at any time.
Annual Inspection Reports
Annual inspection reports shall be submitted to the City of Carmel for each BMP. The first
report is due one year after construction is completed, with subsequent reports due each year
within the same month of the initial report. If there are any discrepancies found during the
inspection, these should be addressed. If the inspection report is not received within the
month it is due, if there are deficiencies which were not included in the report, or if any
deficiencies included in the report are not addressed in a timely manner, the BMP owner faces
enforcement action from the City of Carmel.
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Todd Fenoglio
Director, Facilities & Transportation
tfenogli@ccs.k12.in.us
Carmel Clay Schools
5185 E. Main Street
Carmel, Indiana 46033
TLF#2021-009 05-November 2021
II – SITE INFORMATION
The site contains two Best Management Practices (BMP’s) for the purpose of sediment
removal. One of the Mechanical BMP’s and Underground Detention System is located on the
north side of the proposed building addition. The other Mechanical BMP is located on the east
side of the proposed building addition.
City of Carmel will require annual inspection reports of the water quality BMPs.
LOCATION MAP
Page 4 of 24
TLF#2021-009 05-November 2021
III – BMP OWNER ACKNOWLEDGEMENT AGREEMENT
Page 5 of 24
Owner Acknowledgement Agreement (“Agreement”)
For good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the undersigned owner (“Owner”) hereby submits this Operation and
Maintenance Manual (“Manual”) to the City of Carmel, Indiana (“City”) as a written
acknowledgement of Owner’s warranty and agreement to institute, maintain, and follow
the water quality Best Management Practices (“BMPs”) listed below, and to follow and
abide by the inspection schedule and maintenance activities listed in this Manual. The
Owner also hereby agrees to provide, at Owner’s cost, all additional maintenance, repair,
and/or replacement services reasonably necessary to maintain the function and longevity
of the BMPs from and including the date this Agreement is executed by Owner to and
including the date on which a new Agreement is filed with the City by another party who
assumes all of the obligations and responsibilities of Owner as set forth herein.
BMPs: ___________________________________________________
___________________________________________________
___________________________________________________
_______________________________ ________________________
Owner Signature Date
_______________________________ ______________________________
Printed Name Company
STATE OF INDIANA )
) SS:
COUNTY OF HAMILTON )
BEFORE ME, the undersigned, a Notary Public in and for said County and State,
personally appeared _________________________________ Owner subscribed and
sworn before this ____ day of __________________, ________.
______________________________ ______________________________
County of Residence Signature
______________________________
Commission Expiration Date
______________________________
Printed Name
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TLF#2021-009 05-November 2021
IV – STORM SEWER STRUCTURE MAINTENANCE
Storm structures are set at storm sewer pipe connections. Unless you have OSHA approved
training and equipment, never enter a manhole.
Inspection
All inlet castings should be inspected monthly and after each rainfall event. More frequent
inspections should be performed in areas where there is higher potential for trash or litter and
during the fall when leaves are present on the ground. Check the frame and lid for cracks and
wear, such as rocking lids or lids moved by traffic.
Storm structures and the surrounding areas should be inspected annually for pollutants such as
leaks from dumpsters, minor spills, and oil dumping. Take action to have the pollutant source
removed.
Cleaning
Clean structures when there is a blockage of a water flow path or when sediment depth
reaches 6”. Cleaning should be performed in a way that ensures removed sediment and water
is not discharged back into the storm sewer.
Safety
Work inside underground structures requires special OSHA-required confined space equipment
and procedures. The most practical option may be to contract with a sewer cleaning
contractor.
Materials Handling
Disposal of waste from maintenance of drainage facilities shall be conducted in accordance
with federal, state, and local regulations. Removed sediment must be disposed in the garbage
as a solid waste. Water should be disposed of in a sanitary sewer after oils are removed using
oil absorbent materials or other mechanical means. Used oil absorbents should be recycled or
disposed according to the manufacturer’s instructions.
Repairs
Repair all security and access features so they are fully functional. This includes locking lids,
covers, and ladder rungs. Replace broken parts or lids that rock or are moved by traffic.
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TLF#2021-009 05-November 2021
V – STORM SEWER PIPE MAINTENANCE
Storm sewer pipes convey stormwater. Pipes are built from many materials and are sometimes
perforated to allow stormwater to infiltrate into the ground. Storm pipes are cleaned to
remove sediment or blockages when problems are identified. Storm pipes must be clear of
obstructions and breaks to prevent localized flooding.
Inspection
Pipes are difficult to inspect requiring special equipment and training. Usually, if a problem
occurs, the owner needs to call a sewer or plumbing contractor to inspect, repair, or clean
pipes.
Cleaning
Clean pipes when sediment depth is greater than ¼ of the pipe diameter, with a maximum
sediment depth of 6”. When cleaning a pipe, minimize sediment and debris discharges from
pipes to the storm sewer. Install downstream debris traps (where applicable) before cleaning
and then remove material. Generally, use mechanical methods to remove root obstructions
from inside storm sewer pipes. Do not put root-dissolving chemicals in storm sewer pipes. If
there is a problem, remove the vegetation over the line.
Safety
Work inside underground structures requires special OSHA-required confined space equipment
and procedures. The most practical option may be to contract with a sewer cleaning
contractor.
Materials Handling
Disposal of waste from maintenance of drainage facilities shall be conducted in accordance
with federal, state, and local regulations. Removed sediment must be disposed in the garbage
as a solid waste. Water should be disposed of in a sanitary sewer after oils are removed using
oil absorbent materials or other mechanical means. Used oil absorbents should be recycled or
disposed according to the manufacturer’s instructions.
Repairs
Repair or replace pipes when a dent or break closes more than 20 percent of the pipe diameter.
Repair or replace pipes damaged by deterioration.
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TLF#2021-009 05-November 2021
VI – HYDRODYNAMIC SEPARATOR MAINTENANCE
This site contains two AquaSwirl BMP structures. AquaSwirls are designed to remove
sediment, debris, and free oil from entering the sewer system. After construction, the
AquaSwirl structures should be inspected every six months and cleaned as needed or once a
year regardless of whether it has reached full pollutant storage capacity. Disposal of all
sediment, in addition to local requirements, must be in accordance with all federal and state
requirements. See the attached manufacture O&M Manual for complete details of inspection
and cleaning.
Inspection
Inspect the unit every six months. The inspection should determine sediment depth,
accumulation of trash and litter, and the specific maintenance and repairs needed. Annually
check for cracks large enough to let soil enter the vault, broken or defective plates and baffles,
and crushed or damaged pipes.
Cleaning
Remove trash and litter from the vault, inlet, and piping when present. Remove sediment
when it accumulates to 7” or per the manufacturer’s maximum recommended depth. Cleaning
should be performed in a way that ensures removed sediment and water is not discharged back
into the storm sewer.
Safety
Work inside underground structures requires special OSHA-required confined space equipment
and procedures. The most practical option may be to contract with a sewer cleaning
contractor.
Materials Handling
Disposal of waste from maintenance of drainage facilities shall be conducted in accordance
with federal, state, and local regulations. Removed sediment must be disposed in the garbage
as a solid waste. Water should be disposed of in a sanitary sewer after oils are removed using
oil absorbent materials or other mechanical means. Used oil absorbents should be recycled or
disposed according to the manufacturer’s instructions.
Repairs
Repair any cracked or defective plates or baffles. Repair all security and access features so they
are fully functional. This includes locking lids, covers, and ladder rungs. Replace broken parts
or lids that rock or are moved by traffic.
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TLF#2021-009 05-November 2021
VII – UNDERGROUND DETENTION BASIN MAINTENANCE
This site contains one StormTrap underground detention system located on the north side of
the project area. This basin discharges into an existing 18” storm sewer which drains to the
north toward cool creek. See supporting documentation in this section for StormTrap
Maintenance Manual.
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STORMTRAP MAINTENANCE MANUAL
1. Introduction
Regular inspections are recommended to ensure that the sys tem is functioning as designed.
Please call your Authorized StormTrap Representative if you have questions in regards to the
inspection and maintenance of the StormTrap system. Prior to entry into any underground
storm sewer or underground detention systems, appropriate OSHA a nd local safety
regulations and guidelines should be followed.
2. Inspection Schedules for Municipalities
StormTrap Stormwater Management Systems are recommen ded for inspection whenever the
upstream and downstream catch basins and stormwater pipes of the stormwater collection
system are inspected or maintained. This will economize the cost of the inspection if it is done
at the same time the Municipal crews are visiting the area.
3. Inspection Schedules for Private Development
StormTrap Stormwater Mangement Systems, for a private d evelopment, are recommended
for inspection after each major storm water event. At a minimum, until a cleaning schedule
can be established, an annual inspection is recommended. If in spected on an annual basis,
the inspection should be conducted before the stormwater season begins to be sure that
everything is functioning properly for the upcoming storm season.
4. Inspection Process
Inspections should be done such that at least 2-3 days has lapsed since the most recent rain
event to allow for draining. Visually inspect the system at all manhole locations. Utilizing a
sediment pole, measure and document the amount of silt at each manhole location (Figure
1). Inspect each pipe opening to ensure that the silt level or any forei gn objects are not
blocking the pipes. Be sure to inspect the outlet pipe(s) because this is typically the smallest
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pipe in the system. It is common that most of the larger materials will be coll ected upstream
of the system in catch basins, and it is therefore important at time of inspections to check
these structures for large trash or blockages.
Remove any blockages if you can during the inspection process only if you can do so safely
from the top of the system without entering into the system. Do not go into the system
under any circumstances without proper ventilation equipment and training. Pass any
information requiring action onto the appropriate maintenance personnel if you c annot
remove the blockages from above during the inspection process. Be sure to describe the
location of each manhole and the type of material that needs to be removed.
The sediment level of the system should also be measured and recorded during the inspection
process. Recording the sediment level at each manhole is very i mportant in order get a history
of sediment that can be graphed over time (i.e. years) in order to estimate when the system
will need to be maintained next. It is also important to keep these record s to verify that the
inspection process was actually performed if anyone asks for your records in the future.
The sediment level in the underground detention system can be determined from the outside
of the system by opening up all the manholes and using a sediment pole to measure the
amount of sediment at each location. Force the stick to the bottom of the system an d then
remove it and measure the amount of sediment at that location. Again, do n ot go into the
system under any circumstances without proper ventilation equipment and training.
5. When to Clean the System
Any blockages should be safely removed as soon as practical so that the Stormwater detention
system will fill and drain properly before the next stormwater event.
The Dry Detention System should be completely cleaned whenever the sediment occupies
more than 10% to 15% of the originally designed system’s volume. The Wet Detention
System should be cleaned when the sediment occupies more than 30% or 1/3rd of the
originally designed system’s volume. NOTE: Check with your municipality in regards to
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cleaning criteria, as the allowable sediment before cleaning may be more or less then
described above.
6. How to Clean the StormTrap
The system should be completely cleaned back to 100% of the originally designed storage
volume whenever the above sediment levels have been reached. Be sure to wait at least 3
days after a stormwater event to be sure that the system is completely drained (if it is a Dry
Detention System), and all of the sediments have settled to the bottom of the s ystem (if it is
a Wet Detention System).
Do not enter the System unless you are properly trained, equipped, and qualified to enter a
confined space as identified by local occupational safety and health regulations.
There are many maintenance companies that are in business to help you clean your
underground stormwater detention systems and water quality units. Please call your
StormTrap representative for referrals in your area.
A. Dry Detention System Cleaning
Maintenance is typically performed using a vacuum truck. Sediment should be flushed towards
a vacuum hose for thorough removal. For a Dry Detention System, remove the manhole cover
at the top of the system and lower a vacuum hose into one of the rows of the StormTrap
system. Open up the manhole at the opposite end of the StormTrap and use sewer jetting
equipment to force water in the same row from one end of the StormTrap row to the opposite
side. The rows of the StormTrap are completely open in one contiguous channel from one end
to the other for easy cleaning.
Place the vacuum hose and the sewer jetting equipment in the next row and repeat the
process until all of the rows have been cleaned.
When finished, replace all covers that were removed and dispose of the collected
material properly.
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B. Wet Detention System Cleaning
If the system was designed to maintain a permanent pool of water, floatables and any oil
should be removed in a separate procedure prior to the removal of all sediment.
The floatable trash is removed first by using a bucket strainer to capture and remove any
floating debris.
The floatable oils are then removed off the top of the water by using the vacuum truck to
suck off any floatable fluids and liquids.
The next step is to use the vacuum truck to gently remove the clarified water above the
sediment layer.
The final step is to clean the sediment for each row as described above in the paragraph “A.
Dry Detention System Cleaning”. For smaller systems, the vacuum truck can remove all of
the sediment in the basin without using the sewer jetting equipment because of the smaller
space.
7. Inspection Reports
Proof of these inspections is the responsibility of the property owner. All inspection reports
and data should be kept on site or at a location where they will be accessible for years in the
future. Some municipalities require these inspection and cleaning reports to be forwarded to
the proper governmental permitting agency on an annual basis.
Refer to your local and national regulations for any addition al maintenance requirements and
schedules not contained herein. Inspections should be a part of your standard operati ng
procedure.
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Figure 1. During inspection, measure the distance from finished grade to the top of the
sediment inside the system.
Sample inspection and maintenance log
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TLF#2021-009 05-November 2021
VIII – SITE DIAGRAMS AND STORMWATER DETAILS
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NPROJECT NUMBER: 220014.00CARMEL HIGHSCHOOLNATATORIUMADDITION ANDRENOVATIONSCARMEL CLAY SCHOOLS520 E MAIN STREETCARMEL, IN 46032PROJECT ISSUE DATE: 11.17.2021REGULATORY REVIEWDRAWN BY: HHW317.848.0966350 E NEW YORK ST #300, INDIANAPOLIS, IN 46204REV.NO.DESCRIPTIONDATECONSULTANTATAC SUBMITTAL11/17/2021Page 17 of 24
SEE STRUCTURE DATA TABLE FORCASTING TYPE AND ELEVATIONFINISH GRADEASPHALTICMASTIC OR BUTYLRUBBER SEALBETWEEN JOINTSPRECAST CONCRETE ADJUSTINGRINGS AS NEEDED (12" OF RINGS MAX.)ECCENTRIC CONE OR REDUCERCAP AS REQUIRED BY SITECONDITIONS. CONE TOP TOMATCH ADJUSTING RING PROFILE.48" DIA.5"16"
TYP.PRECAST CONCRETESECTIONSPREFORMED HOLE TO MAX.OF PIPE O.D. + 6" W/ NONSHRINK CEMENT GROUTBENCHWALLS AT MIN. 1/2" PERFOOT SLOPE. BENCHWALLS TOBE CONSTRUCTED TO SPRINGLINE OF PIPE.MANHOLE BASE SET ON6" OF #8 OR #2 STONECOMPACTEDSUBGRADEPLASTIC ENCAPSULATEDSTEEL MANHOLE STEPSO-RING GASKETASPHALTIC MASTICOR BUTYL RUBBERSEAL AT JOINTSBASE 6" OR 8"PER SECTION3"#4 BAR @ 12" o.c.EACH WAY(STEEL MESHAREA = 0.12 SQ.IN./SQ. FT.)STORM MANHOLE TYPE "C" DETAIL1/2" = 1'-0"24" DIA.SEE STRUCTURE DATATABLE FOR PIPE SIZEAND INVERT ELEV.NOTES:1.MANHOLE CONFORMS TO ASTM C478, JOINTS CONFORM TO ASTM C443.2.ALL STORM SEWER CASTINGS SHALL BE MARKED "DUMP NO WASTEDRAINS TO WATERWAYS".3.SEE UTILITY PLAN FOR STORM SEWER STRUCTURE DATA TABLE.VARIES
16" MIN.12" TO 15""A"PIPE SIZE24" X 24"STRUCTURE SIZING CHART"F"30" X 30""M"24" X 36"1" = 1'-0"STORM INLET DETAILINSIDEDIMENSIONSINLETTYPE8"6"CLASS "A" PRECAST REINFORCEDCONCRETE BOXSEE STRUCTURE DATATABLE FOR PIPE SIZEAND INVERT ELEV.INSIDE DIMENSION* SEE SIZING CHART ABOVESEE STRUCTURE DATA TABLE FORCASTING TYPE AND ELEVATIONBASE SET ON 6" OF#8 OR #2 STONECOMPACTEDSUBGRADEINSIDE DIMENSION
* SEE SIZING CHART ABOVE
MAX. NUMBER OFSIDES OF THEINLET WITH PIPES318" TO 24"315" TO 18"3NOTES:1.ALL STORM SEWER CASTINGS SHALL BE MARKED "DUMP NO WASTEDRAINS TO WATERWAYS".2.SEE UTILITY PLAN FOR STORM SEWER STRUCTURE DATA TABLE.FOR PIPE LOCATED IN ANDWITHIN 5' OF PAVED AREASFOR PIPE LOCATEDIN GRASSED AREASSTORM SEWER (PVC & HDPE) TRENCH DETAILNO SCALENOTES:1.ALL BEDDING & INITIAL BACKFILLSHALL BE INSTALLED IN 6" TO 12"BALANCED LIFTS.2.A MIN. 9" CLEARANCE EACH SIDEOR PIPE FOR 42" DIA. AND LESS.BcMIN.
4"12"MIN. 1.25 O.D.+12"MIN. 6" TOPSOILOUTSIDE PAVEMENT LIMITSPAVEMENT SECTIONREGULAR BACKFILL -GREATER THAN 5' FROMEDGE OF PAVEMENTCOMPACTED 90%REGULAR BACKFILL-GREATER THAN 5' FROMEDGE OF PAVEMENTCOMPACTED TO 90%#8 CRUSHED STONE OREQUIVALENT CLASS 1MATERIAL HAND TAMPEDOR WALKED INTO PLACE"B" BORROW (INDOT SPEC.) OREQUIVALENT GRANULARMATERIAL COMPACTED TO 95%STANDARD PROCTER DENSITY20 L.F. (MIN,)20 L.F. (MIN,)2
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4" DIA. PERF.PVC SDR-35 PIPE1'-0"4"NON WOVENFILTER CLOTH#8 WASHEDAGGREGATECOMPACTED AGGREGATE BASEPAVEMENTCURB INLETNOTES:1.TAP STRUCTURES IN PAVEMENT AS SHOWNOR AS DIRECTED ON THE PLAN SHEET2.ADJUST UNDERDRAIN AS REQUIRED TOAVOID SEWER LINES AND OTHER UTILITIES.3.GROUT SOLID THE CONNECTION TO STORMSTRUCTUREPAVEMENT UNDERDRAIN DETAILNONESTORM SEWER / WATER LINE CROSSING DETAILNONESLOPEMIN.NOTE: CLEANOUTS IN PAVED AREAS TO BE ACCESSIBLE VIA YARDBOXES OR EXTENDED FLUSH WITH THE PAVING. CO VER SHOULD BETHREADED TYPE, WATER TIGHT AND CAPPED.1/2" = 1'-0"CLEANOUT DETAILVARIES FINISH GRADESTORM OR SANITARY SEWER(SIZE SHOWN ON PLANS)SAME SIZE AS MAIN LINE(MAX. 8" REQUIRED ON STORM SEWERS)1'-0"1'-0"MIN.6"
1/2"HEAVY DUTY CLEANOUTCASTING - JAY R. SMITH 4253SERIES OR EQUALCONCRETE COLLAR(CONCRETE SHALL NOTBE IN CONTACT w/ PIPE)30"72"60"102"108"96"6"7"9"9"SEE SCHEDULEFOR CASTING TYPEAND ELEVATIONFINISHGRADESTORM MANHOLE TYPE "J - N" DETAIL1/2" = 1'-0"24" DIA.PRECAST CONCRETEADJUSTING RING4" MIN. - 12" MAX. SEE DETAILPLASTIC ENCAPSULATEDSTEEL MANHOLE STEPS48" DIA.STANDARD PRECASTMANHOLE CAP OR CONE3" MIN.
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TLF#2021-009 05-November 2021
IX – INSPECTION AND MAINTENANCE SCHEDULE
Structure/BMP Inspection Maintenance
Storm Structure Casting Monthly & after rain events 6” of sediment accumulation
Storm Structure Sump Annually & after heavy rain
events
6” of sediment accumulation
Storm Sewer Pipe When problems occur 6” of sediment accumulation
Hydrodynamic Separator Every 6 months 7” of sediment accumulation
Underground Detention Basin Every 6 months As necessary (at a minimum,
annually)
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TLF#2021-009 05-November 2021
X – SAMPLE INSPECTION CHECKLISTS
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Storm Sewer Structure Operation, Maintenance, and Management Inspection Checklist for BMP Owners
Project: _________________________________Owner Change since last inspection? Y N
Owner Name, Address, Phone: ___________________________________________________________
Number: _____________________________________________________________________________
Location: _____________________________________________________________________________
Site Status _________________________________
Date: ________________________
Time: ________________________
Inspector: ____________________________________________________________________________
Maintenance Item Satisfactory/
Unsatisfactory
Comments
Storm Casting and Grate (Inspect monthly and after major storms)
1. Trash/Debris obstructing inflow
Affected Structures:
2. Silt/Sediment accumulation
Affected Pipes:
3. Other (describe)
Structure Sump (Inspect annually and after major storms)
1. Sediment/Debris in sump
Affected Structures:
2. Other (describe)
Headwall Structures (Inspect annually and after major storms)
1. Vegetation around headwall
2. Erosion around headwall
3. Animal burrows
4. Headwall clear of obstructions
5. Sediment Accumulation
Affected Structures:
6. Other (describe)
Additional Comments:
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
Actions to be taken:
Timeframe:
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Storm Sewer Pipes Operation, Maintenance, and Management Inspection Checklist for BMP Owners
Project: _________________________________Owner Change since last inspection? Y N
Owner Name, Address, Phone: ___________________________________________________________
Number: _____________________________________________________________________________
Location: _____________________________________________________________________________
Site Status _________________________________
Date: ________________________
Time: ________________________
Inspector: ____________________________________________________________________________
Maintenance Item Satisfactory/
Unsatisfactory
Comments
Storm sewer pipes (Inspect annually and after major storms)
1. Trash/Debris obstructing inflow
Affected Pipes:
2. Silt/Sediment accumulation
Affected Pipes:
3. Other (describe)
Additional Comments:
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
Actions to be taken:
Timeframe:
Page 22 of 24
Aqua-Swirl Water Quality Structure Operation, Maintenance, and Management Inspection Checklist for
BMP Owners
Project: _________________________________Owner Change since last inspection? Y N
Owner Name, Address, Phone: ___________________________________________________________
Number: _____________________________________________________________________________
Location: _____________________________________________________________________________
Site Status: _________________________________
Date: ________________________
Time: ________________________
Inspector: ____________________________________________________________________________
Maintenance Item Satisfactory/
Unsatisfactory
Comments
Aqua-Swirl Concentrator (Inspect quarterly and after major storms)
1. Condition of Structure
2. Trash/Debris obstructing inflow
Affected Structures:
3. Silt/Sediment accumulation
Affected Pipes:
4. Other (describe)
Filtration Chamber (Cleaned annually at a minimum)
1. Condition of Chamber and Filter Trays
2. Color of Filter Media
3. Sediment/Debris in sediment chamber
pumped and unit is pressure washed
4. Other (describe)
Additional Comments:
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
Actions to be taken:
Timeframe:
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Underground Detention Operation, Maintenance, and Management Inspection Checklist for BMP Owners
Project: _________________________________Owner Change since last inspection? Y N
Owner Name, Address, Phone: ___________________________________________________________
Number: _____________________________________________________________________________
Location: _____________________________________________________________________________
Site Status _________________________________
Date: ________________________
Time: ________________________
Inspector: ____________________________________________________________________________
Maintenance Item Satisfactory/
Unsatisfactory
Comments
Inflow Points (Inspect every 6 months)
1. Trash/Debris/Sediment obstructing inflow
Affected Pipes:
2. Structure Condition
3. Pipe Condition
4. Other (describe)
Underground Chambers
1. Debris/Sediment accumulation
2. Access condition
3. Chambers structural condition
4. Weir condition
5. Leaking chambers
6. Oil accumulation
7. Proper drainage
8. Other (describe)
Outlet Device
1. Debris/Sediment obstructing outflow
2. Structure condition
3. Pipe Condition
4. Orifice Plate/outlet pipe blockage
5. Other (describe)
Additional Comments:
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
Actions to be taken:
Timeframe:
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