FINAL O&Mmanual_2015-04-073939 Priority Way South Drive, Suite 200 Indianapolis, Indiana 46240 Telephone 317 844 6777 Facsimile 317 706 6451 www.cripe.biz PIC: 060384-20311
Operation and Maintenance Manual
for
Lot 1, Meridian & Main Phase I
Carmel, Indiana
Prepared for:
Meridian 131, LLC
6100 West 96th Street
Indianapolis, IN 46278
May 16, 2014
Revised October 3, 2014
Revised February 11, 2015 FINAL April 7, 2015
1
Operation and Maintenance Manual
Stormwater Treatment System
for
Lot 1, Meridian & Main Phase 1
Carmel, Indiana
TABLE OF CONTENTS
1.0 Introduction ...................................................................................... 2
1.1 Project Description ............................................................................................ 2 1.2 Purpose and Performance ................................................................................ 2
2.0 Water Quality Maintenance .............................................................. 2 2.1 Maintenance and Inspections ........................................................................... 3 2.2 Documentation .................................................................................................. 4
3.0 Owner’s Acceptance ....................................... …………………….…4
Owner Acknowledgement Agreement........................................................................... 5
Appendix A – BMP Detail
Appendix B – Operation and Maintenance
Appendix C – BMP Easement
2
1.0 Introduction
The City of Carmel has adopted a policy in compliance with the National Pollutant
Discharge Elimination System (NPDES) stormwater permit to control and improve the
water quality of stormwater runoff. The water quality management program is based on
the performance of approved structural Best Management Practices (BMP) to remove
80% of total suspended solids (TSS) from the first 1-inch of storm water runoff. Design requirements and parameters may be found in the City of Carmel Stormwater Technical
Standards Manual.
1.1 Project Description The proposed Lot 1, Meridian & Main Phase 1 project shall consist of the installation of
the two proposed multi-tenant, retail buildings, asphalt parking, concrete sidewalks and
all utilities to service the adjacent lots. In preparation of this development the developer
has already planned for one stage of water quality treatment being the infiltration basin.
The first BMP in the treatment train shall be the Aqua-Swirl AS-5 unit which will remove the largest and heaviest of the suspended solids as well as floatables in the stormwater
runoff. The second treatment, is the existing Infiltration Basins, shall filter the residual
TSS as well as hydrocarbons and pollutants remaining in the stormwater (See Appendix
A for details.) This treatment train shall exceed the stormwater treatment capacity as
mandated by the City of Carmel.
1.2 Purpose and Performance
In order to achieve the 80% target removal rate of TSS from the stormwater runoff
associated with the proposed improvements a mechanical BMP (Aqua-Swirl Unit) was selected based on the physical site characteristics, cost, and the water quality treatment
volume to be treated per City of Carmel requirements. This BMP will be combined with
the use of the existing campus master planned infiltration basins for water quality
treatment thus achieving the City standard for a minimum of two BMP treatment train.
The O&M for the existing infiltration is already established for the campus infiltration basins. The benefits of these types of BMP’s are very high pollutant removal rates.
The BMP’s are located prior to the discharge of the storm system from the site and have
been sized according to the City of Carmel Stormwater Technical Standards Manual.
The mechanical BMP has been sized using the Water Quality Curve Number as
calculated using the City of Carmel Stormwater Technical Standards Manual for the Infrastructure only (See Calculations and Exhibits in the Drainage Report.
2.0 Water Quality Maintenance
As part of the Water Quality program, the City of Carmel is also requiring a maintenance
and inspection program by the Owner for each type of BMP.
3
2.1 Maintenance and Inspections
Routine inspections, maintenance, and the costs necessary for the maintenance and
repair of the BMPs are the responsibility of the owner. The following are the
recommended inspection items and timeframes for the Aquaswirl Unit. Inspection Frequency: The manufacturer recommends quarterly inspections;
however, City of Carmel Engineering Department
requires annual inspection reports to be submitted to
the city, in the same month as the initial inspection. First inspection report is due one year after completion of the project.
Annual Inspection Reports shall be submitted to:
Engineering Department Attn: Storm Water Administrator
One Civic Square
Carmel, IN 46032
Inspection Frequency Date
Construction completion September 30, 2015
Annually after construction September 30, 20**
1 Approximate construction completion date
Maintenance and Inspections (Mechanical BMP- Aqua-Swirl Unit)
Inspection Item:
Sediment – Sediment is to be removed when inspection reveals a top
of sediment depth within 6 in. of the dry-weather water surface
elevation in the structure. Sediment depths can be easily determined by
measuring the distance from the top of the manhole to the dry water surface elevation and then measuring the distance from the top of the
manhole to the top of the sediment pile. This can be done with a steel
tape or stadia rod. The system should be pumped clean using a high
velocity vacuum truck.
Free-floating oil and floatable debris – use a high velocity vacuum
truck to clean the pollutants. After recording the measurements on the
Inspection Data Sheet (attached in Appendix B), the vacuum hose is
lowered through the access opening and the floating debris. The oil may be best removed by using an absorbent pad. Usually, confined
space entry can be avoided by inspecting from the manhole entrance
and cleaning the system by using a vacuum hose.
4
2.2 Documentation
The owner is required to maintain completed inspection reports/records and update the
operations and maintenance plan for the BMP. The inspection reports shall be submitted to the City of Carmel Engineering Department annually and made available to the City upon request.
3.0 Owner’s Acceptance
The City and/or its representatives have the right to enter the property to inspect BMPs.
The BMP Owner shall be financially responsible for any maintenance or repairs required
by the City or its representatives during the City’s inspections.
This Operation and Maintenance Manual is submitted to the City of Carmel with the
intent to insure the longevity and adequate functioning of the Aqua-Swirl AS-5 Unit
BMP owned by Meridian 131, LLC located at 6100 W. 96th Street, Indianapolis, IN
46278. By submitting this Operation and Maintenance Manual to the City of Carmel with plans to construct an Aqua-Swirl AS-5 Unit, the BMP owner noted above agrees to
follow and abide by the inspection schedule and maintenance activities listed in this
manual. The BMP owner noted above is responsible for any additional maintenance
and/or repair activities to maintain the function and longevity of the BMP(s).
Owner Information:
Jamie W. Browning
Meridian 131, LLC 6100 W. 96th Street
Indianapolis, IN 46278
317-344-7328
JBrowning@browninginv.com
APPENDIX A
BMP Detail
APPENDIX B
Aqua-Swirl
Operation and Maintenance
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 Carmel 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 Carmel, Indiana
Site and Owner Information
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.)
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.
Remove sediments, oils and other
floatable pollutants with a vactor. Dispose of all waste in
accordance with City of Carmel 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 followedto 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 six months and clean the system as needed.
Inspect and clean the system at least once bi-annually regardless of whether it has reached its sediment or floatable pollutant storage capacity.
Second and Subsequent Years Post-ConstructionIf the AquaSwirlTM did not reach full sediment or floatable pollutant capacity in the First Year Post-Construction,
the system can be inspected once annually and cleaned as need or bi-annually at a minimum.
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
at least bi-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:
Activity Log
Structural Conditions and Comments
Maintenance Company Information
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 during the construction
phase of the project.
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 MaintainAs Needed
Clean System*X*
* The AquaSwirlTM should be cleaned at the end of the first year post construction if it is at or near its pollutant storage capcacity.
Otherwise, the system can be cleaned at a later date depending on how quickly the sediment starts to harden.
Activity 1 2 3 4 5 6 7 8 9 10 11 12Inspect and Clean as Needed*X X
Inspect Bypass Structures*X X
(if applicable) and Maintain
As Needed
Clean System*
*If the AquaSwirlTM did not reach full sediment or floatable pollutant capacity in the First Year Post-Construction, the system can be inspected
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 and cleaned as needed.
Regardless of whether the AquaSwirlTM reaches full sediment or floatable storage capacity, it should be cleaned
frequently enough to prevent captured sediments from hardening. Normally, cleaning once every two to three years should be sufficient to
prevent sediments from hardening.
*The bypass system should be inspected with each AquaSwirlTM inspection and maintained as needed.
Aqua-Swirl TM
TABULAR MAINTENANCE SCHEDULE
Second and Subsequent Years Post-Construction
Month
During Construction
Month
First Year Post-Construction
Month
APPENDIX C
BMP Easement