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Stormwater Operation and Maintenance Manual
For
Artistic Composite Pallets – Parking Lot Expansion
4518 W 99th Street
Carmel, IN
Prepared For:
Artistic Composite Pallets
4518 W 99th Street,
Carmel, IN
Prepared By:
American Structurepoint, Inc.
9025 River Road
Indianapolis, Indiana 46240
(317) 547-5580
Submitted by:
Nathan Horgan, EI
Submitted: November 3, 2021
Revised: November 30, 2021
TABLE OF CONTENTS
OWNER ACKNOWLEDGMENT AGREEMENT (“AGREEMENT”)
SECTION I
Owner Information
SECTION II
Site Information
SECTION III
Storm Structure Maintenance
SECTION IV
Conveyance Maintenance (Stormsewer)
SECTION V
Dry Pond
SECTION VI
Aqua-Swirl System
SECTION VII
Inspection and Maintenance Schedule
SECTION VIII
Utility Plan and Details
SECTION IX
Inspection Checklist Forms
O&M Manual
Artistic Composite Pallets – Parking Lot Expansion
4518 W 99th Street
Carmel, IN
BMP Owner Name
Artistic Composite Pallets
4518 W 99th Street,
Carmel, IN
Representative: Garrett Clarke
Business Phone: (317) 240-9281
E-mail: gclark@artisticpallets.com
General Information
The purpose of water quality Best Management Practices is to filter the first flush of rainwater
before it enters the downstream lakes and streams. Through the use of these Best Management
Practices, the sediment and pollutant load in stormwater runoff is reduced, and in many cases the
quantity of stormwater water runoff generated is also reduced. The use of Best Management
Practices 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 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 deficiencies 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 City
of Carmel.
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 City of Carmel, Indiana (“City”) as 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: Aqua-Swirl AS-3 & Dry Detention Pond
__________________________ ________________________
Owner Signature Date
__________________________ ________________________
Printed Name Company
STATE OF ________________ )
) SS:
COUNTY OF ______________ )
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
_______________________________
Commission Expiration Date
_______________________________
Printed Name
SECTION I
OWNER INFORMATION
OWNER INFORMATION:
Artistic Composite Pallets
4518 W 99th Street,
Carmel, IN
Representative: Garrett Clarke
Business Phone: (317) 240-9281
E-mail: gclark@artisticpallets.com
OWNER RESPONSIBILITY:
The Owner is responsible for all maintenance, including cost, associated with inspecting
and maintaining the infrastructure included within this manual.
SECTION II
SITE INFORMATION
The site contains one Best Management Practice (BMP) for the purpose of sediment removal.
This BMP is an Aqua-Swirl AS-3 Unit. The Aqua-Swirl is located west of the proposed outlet
into the existing Dry Detention Pond.
See the attached site exhibits for BMP and storm sewer locations.
City of Carmel will require annual inspection reports of the water quality BMPs.
SECTION III
STORM 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 (e.g.
retail establishments) 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 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.
SECTION IV
CONVEYANCE MAINTENANCE (STORMSEWER)
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
pipelines.
Cleaning
Clean pipes when sediment depth is greater than ¼ of 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
Sediment and debris from pipes should be disposed in the garbage as solid waste. Pick out any
rocks first.
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.
SECTION V
DRY POND
The site utilizes an existing dry detention basin, located in the southeast corner.
Detention facilities are designed to hold and slowly release stormwater by use of a pond and a
specially designed control structure.
Inspection
Inspect the facility for oil and other pollutants and remove any pollutants greater in volume than
a surface sheen. Inspect sediment sump if present. Identify and report pollutant sources to the
facility. Inspect vegetation and perform maintenance activities if necessary. Review construction
plans for any original planting plan.
Cleaning
Remove trash and sediment as necessary.
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 solid
waste.
Repairs
Repair and seed bare areas. Repair eroded slopes when rills form, where the cause of damage is
present, or there is the potential for future erosion. If berms or dams show signs of settlement or
sinkholes, serious problems may be occurring. Spillway areas should be completely covered by
established vegetation.
SECTION VI
AQUA-SWIRL SYSTEM
The site contains one AS-3 Aqua-Swirl unit directly west of the Dry Detention Pond.
Swirl concentrators are designed to remove sediment, debris, and free oil from entering the sewer
system. After construction the swirl concentrator 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 O&M Manual for the swirl concentrator 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 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
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 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.
SECTION VII
INSPECTION AND MAINTENANCE SCHEDULE
Structure/Unit Inspection Maintenance
Storm Structure
Maintenance
Monthly & after rain events Accumulate 6” of sediment
Conveyance Maintenance
(Storm Sewer)
When problems occur Accumulate 6” of sediment
Dry Detention System Every 6 months When trash and litter are
present
Aqua-Swirl Every 6 months Per manufacturers
designated depth
SECTION VIII
UTILITY PLAN AND DETAILS
SECTION IX
INSPECTION CHECKLIST FORMS
Project:Owner Change since last inspection?Y N
Owner Name, Address, Phone:
Number:
Location:
Site Status
Date:
Time:
Inspector:
Additional Comments:
Actions to be taken:Timeframe:
1. Trash/Debris obstructing inflow
3. Other (describe)
Affected Pipes:
2. Silt/Sediment accumulation
Affected Pipes:
Maintenance Item Satisfactory/
Unsatisfactory Comments
Storm sewer pipes (Inspect annually and after major storms)
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:
Headwall Structures (Inspect annually and after major storms)
Additional Comments:
Actions to be taken:Timeframe:
6. Other (describe)
Affected Structures:
3. Animal burrows
4. Headwall clear of obstructions
1. Sediment/Debris in sump
3. Other (describe)
5. Sediement Accumulation
Affected Structures:
1. Vegetation around headwall
2. Erosion around headwall
Structure Sump (Inspect annually and after major storms)
Affected Structures:
2. Silt/Sediment accumulation
Affected Structures:
3. Other (describe)
1. Trash/Debris obstructing inflow
Maintenance Item Satisfactory/
Unsatisfactory Comments
Structure Casting and Grate (Inspect annually and after major storms)
Storm Sewer Structure Operation, Maintenance, and Management Inspection Checklist for BMP Owners
Aqua-SwirlTM O and M Manual
Page 1
Site Name:Change in ownership since last inspection?Y N
Owner Name:
Owner Address:
Owner Phone Number:
Emergency Phone Number:
Location:
Date:
Time:
Inspector Name:
Floatable Debris and Oil
1. Remove manhole lid to expose liquid surface of Aqua-SwirlTM.
2. Remove floatable debris with basket or net if any is present.
3. If a hydrocarbon spill has occurred, (e.g. more than a sheen of oil or gas is present) the system should be cleaned immediately
(see "Cleaning" Figure 3).
Note: Water in an Aqua-SwirlTM can appear black like oil due to the dark body of the surrounding structure. Oil appears
darker than water in the system and is usually accompanied by debris (e.g. Styrofoam, etc.) with obvious signs of oil stains.
The depth of oil can be measured with an oil/water interface probe, a stadia rod with water phylic paste,
a coliwasa, or by simply collecting a representative sample with a jar attached to a rod.
4. If hydrocarbon absorbant floc or pads are used, these should be inspected to determine whether they are loaded with
hydrocarbons. This will be indicated by a dark colaration of the pad or floc. Pads and/or floc should be removed and
disposed of in accordance with City of Indianapolis, and any applicable state and/or federal laws if they contain hydrocarbons.
Sediment Accumulation
Lower a dipstick tube equipped with a ball valve (e.g. Sludge Judge or similar device) into Aqua-SwirlTM through the service access provided.
Measure the depth of the sludge. At a maximum, the sludge should not exceed 36" depth before maintenance. See Figures 1 and 2.
36"
Figure 1 Figure 2
City of Indianapolis, Indiana
Aqua-Swirl TM
Inspection
Maintenance Items
Operation, Maintenance, and Inspection Manual for BMP Owners
(Note: Attach certifications for local regulatory authority including any applicable fees.)
Site and Owner Information
Aqua-SwirlTM O and M Manual
Page 2
Diversion Structures
If an external diversion structure is present on the site, this should be inspected for the following items.
1. Inspect weir or other structure for structural decay or damage. Weirs are more susceptible to damage than off-set piping and should
be checked to confirm that they are not crumbling or decaying.
2. Inspect diversion structure and by-pass piping for signs of structural damage or blockage from debris or sediment accumulation.
3. Measure elevations on diversion weir or piping to ensure it is consistent with site plan design.
4. Inspect downstream structure in diversion system for signs of blockage or structural failure.
ENTEL, Inc. (734-657-3839) provides inspection and maintenance services for AquaSwirls in central Indiana.
Remove sediments, oils and other
floatable pollutants with a vactor. Dispose of all waste in
accordance with City of Indianapolis and any applicable state,
and/or federal requirements.
Oil should be pumped and removed with any liquids and
sediments that have been trapped in the system.
These liquids should be taken to an industrial waste water
treatment facility for treatment. Liquids and solids pumped from
the AquaSwirlTM should not be dumped back into the
stormwater system or into a sanitary sewer.
Figure 3
Note: The AquaSwirlTM is designed so that entry to the system is not necessary for inspection or maintenance. If, however,
you wish to enter the system, this is an OSHA confined space entry and OSHA confined space entry procedures should be followed
to enter the system.
During Construction
Inspect the AquaSwirlTM every three months (minimum) and clean the system as needed. The AquaSwirlTM should be inspected and
cleaned at the end of construction regardless of whether it has reached its sediment or oil storage capacity.
First Year Post-Construction
Inspect the AquaSwirlTM every three months and clean the system as needed.
Inspect and clean the system once annually regardless of whether it has reached its sediment or floatable pollutant storage capacity.
Second and Subsequent Years Post-Construction
If the AquaSwirlTM did not reach full sediment or floatable pollutant capacity in the First Year Post-Construction,
the system can be inspected once every six months and cleaned once annually.
If the AquaSwirlTM reached full sediment or floatable pollutant capacity in less than 12 months in the First Year Post-Construction,
the system should be inspected once every six months and cleaned as needed. The AquaSwirlTM should be cleaned
annually regardless of whether it reaches its sediment or floatable pollutant capacity.
Bypass Structures
Bypass structures should be inspected whenever the AquaSwirlTM is inspected and maintained as needed.
Cleaning
Inspection (continued)
Maintenance Schedule
Aqua-SwirlTM O and M Manual
Page 3
Company Name:
Street Address:
City, State, Zip:
Contact:
Office Phone:
Mobile Phone:
Pager:
Date of cleaning:(Next inspection should be 3 months from this date for the first year).
Time of cleaning:
Date of next inspection:
Floatable debris present (Y/N)?
Oil present (Y/N)?Oil depth (inches):
Any structural damage?Y N Where?
Any evidence of structural wear?Y N Where?
Odors present?Y N Describe:
Any plugging?Y N Describe:
Maintenance Company Information
Activity Log
Structural Conditions and Comments
Aqua-SwirlTM O and M Manual
Page 4
Additional Comments and/or Actions to Be Taken Time Frame
NOTES:
1. Attach site plan showing Aqua-SwirlTM location.
2. Attach detail drawing showing Aqua-SwirlTM dimensions and model number.
3. If a diversion structure is used, attached details showing basic design and elevations.
NOTES
Aqua-SwirlTM O and M Manual
Page 5
Date Construction Started:
Date Construction Ended:
Activity 1 2 3 4 5 6 7 8 9 10 11 12
Inspect and Clean as Needed X X X X
Inspect Bypass Structures X X X X
(if applicable) and Maintain
As Needed
Clean System*X*
* The AquaSwirlTM should be cleaned once a year regardless of whether it has reached full pollutant
storage capacity. In addition, the system should be cleaned at the end of construction regardless
of whether it has reach full pollutant storage capacity.
Activity 1 2 3 4 5 6 7 8 9 10 11 12
Inspect and Clean as Needed X X X X
Inspect Bypass Structures X X X X
(if applicable) and Maintain
As Needed
Clean System*X*
* The AquaSwirlTM should be cleaned once a year regardless of whether it has reached full pollutant
storage capacity.
Activity 1 2 3 4 5 6 7 8 9 10 11 12
Inspect and Clean as Needed*X X
Inspect Bypass Structures*X X
(if applicable) and Maintain
As Needed
Clean System*X X
*If the AquaSwirlTM did not reach full sediment or floatable pollutant capacity in the First Year Post-Construction,
the system can be inspected every six months and cleaned once annually.
If the AquaSwirlTM reached full sediment or floatable pollutant capacity in less than 12 months in the First Year
Post-Construction, the system should be inspected as frequently as past history warrants (once every six months minimum)
and cleaned as needed. The AquaSwirlTM should be cleaned annually regardless of whether it
reaches its sediment or floatable pollutant capacity. External bypass structures, if present, should be inspected whenever the
AquaSwirlTM is inspected and maintained as needed.
Second and Subsequent Years Post-Construction
Month
During Construction
Month
First Year Post-Construction
Month
Aqua-Swirl TM
TABULAR MAINTENANCE SCHEDULE