HomeMy WebLinkAboutO&M Manual 12-17-19
10505 North College Avenue | Indianapolis, IN 46280 | .www.weihe.net | (317) 846-6611 | (800) 452-6408 | Fax: (317) 843-0546
Allan H. Weihe, P.E., L.S., - Founder
OPERATIONS AND MAINTENANCE MANUAL
For: CARMEL SELF STORAGE CENTER
Approximately 4.3 acres
147 & 155 West Carmel Drive
Part of SE/4, Section 36, Township 18 North, Range 3 East, Clay Township, Hamilton County, IN
Project W190582
Prepared For:
Jim Adams
Adams French Property, LLC
9000 Keystone Crossing, Suite 660
Indianapolis, IN 46240
Phone: (317) 733-640
jadams@filcoltd.com
Prepared By: Russell L. Webster II, P.E.
Checked By: Brad Schoeff
Certified By: Russell L. Webster II, P.E.
Date:
December 17, 2019
Revised:
Report Prepared For:
Carmel Self-Storage Center
Carmel, IN
Project #W190582
TABLE OF CONTENTS
Operation and Maintenance Manual
1. Project Narrative
2. Definitions
3. Owner Acknowledgement
4. Location Maps
5. Checklist and Maintenance Activities
• Mechanical Water Quality Unit (Aqua-Swirl XC-7)
• Vegetated Swale
Project Narrative
Carmel Self Storage is proposing to demolish and reconstruct their existing building on
their site on West Carmel Drive. The proposed building will be a better match for the
current architectural requirements in the area and will bring the new building closer to the
right-of-way.
The stormwater design for this project is challenging. The site is 95% impervious today
and has been since approximately 1980 when the site was built-out fully. The outlet pipe
for the site is one 12” storm sewer which handles onsite flows and underdrains from
onsite and offsite. Said outlet pipe is less than 3’ deep. Because the site is fully built-out,
there is minimal room to consider detention and water quality. However, disturbing more
than 0.25 acres triggers these requirements per the UDO.
The owner is removing and replacing the north office and storage building but will not be
removing any self-storage buildings. Most of the southern part of the site containing these
self-storage buildings sheet flow to the west towards the existing outlet pipe. The owner
understands there is not adequate elevation to rip out pavement and install underground
detention, nor will they remove any of the existing storage buildings to provide detention.
However, the owner will remove asphalt to accommodate as much detention as the
western edge of the site will allow. This area will not provide enough detention to satisfy
the UDO. The owners’ team has advised to remove asphalt along the west side of the
property but will leave enough asphalt for the Carmel fire truck to maneuver on the site.
We believe this swale will accommodate approximately 20-25% of what would be
required to meet the release rate requirements for the development based on the UDO.
The owner is willing to provide water quality for the entire site by using an Aqua Swirl
Xcelerator. The owner has also selected a dry swale option for detention to incorporate
green infrastructure into the redevelopment.
Site Location:
Approximately 4.3 acres located at 147 & 155 West Carmel Drive
Part of SE/4, Section 36, Township 18 North, Range 3 East, Clay Township, Hamilton County,
IN
Floodzone:
The site does not lie in a Special Flood Hazard Area as established by the Federal
Emergency Management Agency - National Flood Insurance Program, when plotted by
scale on Flood Insurance Rate Map #18057C0209 G, dated November 19, 2014.
BMP Owner Contact Information:
Jim Adams
Adams French Property, LLC
9000 Keystone Crossing, Suite 660
Indianapolis, IN 46240
Phone: (317) 733-640
jadams@filcoltd.com
Definitions
Best Management Practices (BMP):
Best Management Practices, refer to structural or non-structural measures designed for
the benefit of water quality and quantity.
Urban stormwater runoff contains many types and forms of pollutants. When compared
to stormwater run-off from pre-developed conditions, high concentrations and some
contaminants that are not naturally present in surface runoff from undeveloped local
lands are found. Runoff from undeveloped watersheds contains metals, nutrients,
sediment particles, oxygen-demanding compounds, and other constituents. Once
developed, constituent loads increase because surface runoff volumes increase and the
sources of many of these pollutants also increase. Supplemental applications of
compounds, such as fertilizers, also tend to increase the availability of some pollutants to
stormwater runoff.
Runoff water quality in urban areas can be extremely detrimental to local habitat. Paved
surfaces and standing water bodies for stormwater management control elevate the
temperature of water entering streams. Chemicals in standing water and ponds are
oxidized, resulting in depressed levels of dissolved oxygen. Increased runoff volumes
and rates create scour and deposition damage to instream habitat. Activities in urbanized
areas, such as vehicular traffic, deposit pollutants such as heavy metals and oil & grease
on paved surfaces where they easily wash off into the streams.
BMP Owner:
The owner of the BMP, typically the property owner. The BMP owner may also be the
lessee of the property in the case of long-term leases of commercial and industrial zoned
properties. The lessee is considered the bmp owner only if the lease specifically states
that construction by the lessee must meet applicable local codes and regulations.
Mechanical Water Quality Unit (Aqua-Swirl XC-7)
The Aqua-Swirl™ Stormwater Treatment System is a custom-engineered, post-
construction flow-through water quality device designed to remove coarse sediment,
debris, and free-floating oil by utilizing hydrodynamic separation technology. Aqua-
Swirl™ technology is a modular high-flow-rate treatment system that has no moving
parts and operates under gravity flow conditions within a single swirl chamber.
Dry Detention Basin:
A dry detention basin is an impoundment or excavated basin for the short-term detention
of stormwater runoff from a completed development that allows a controlled release from
the structure at downstream, pre-development flow rates. Conventional dry detention
basins typically control peak runoff for 2-year and 10-year 24-hour storms. They are not
specifically designed to provide extended dewatering times, wet pools, or groundwater
recharge. Sometimes flows can be controlled using an outlet pipe of the appropriate size
but this approach typically cannot control multiple design storms.
Stormwater Infrastructure:
Storm water infrastructure and structures refers to structural or non-structural measures
designed for the benefit of storm water conveyance. Storm water is the rainfall/ snowmelt
that flows over our yards, streets, parking lots, and buildings and either enters the storm
drain system or runs directly into a lake or stream.
Owners of storm water infrastructure and structures are typically the property owner.
The storm water infrastructure owner may also be the lessee of the property in the case of
long-term leases of commercial and industrial zoned properties. The lessee is considered
the owner only if the lease specifically states that construction by the lessee must meet
applicable local codes and regulations
Catch basins:
Catch basin/inlet cleaning and repair has traditionally been performed to respond to
localized flooding problems in streets. Catch basins are inlets at the curb with a small trap
(usually six inches to one foot deep) below the sewer pipe. These devices help to clean
storm water because particles in street runoff settle into the trap before the water enters
the storm sewers. Catch basins require regular cleaning of the sediment trap to be. The
inlets do not trap sediments and don’t need cleaning unless they are plugged. Cleaning
for either catch basins or inlets can be done by hand (e.g., with a clamshell or shovel) or
with a vacuum truck.
Conveyance Storm Pipes:
A good rule of thumb is to conduct inspection of storm drain inlets and other drainage
facilities at least once a year, prior to the beginning of the rainy season. Complete
inspections early enough so that repairs can be made during dry weather. Catch
basins/inlets should be inspected at least once every six months. Storm Pipes and culverts
should be inspected every three to five years, or in response to a problem. Most agencies
inspect their sewer pipes six inches or larger with a TV camera. All other parts of the
system are inspected visually.
Look for excessive silt build-up, erosion, unusual algal growth, cracked or collapsed
pipes, misaligned joints, and other signs of problems such as a sheen on the water
surface, discolored water, or an unpleasant odor. Check with product manufacturers or
storm water handbooks for advice on what to look for when inspecting more
sophisticated treatment devices such as flow splitters and diverters. When a problem is
noted, take steps to correct the problem, or route this information immediately to the
appropriate individual(s) in your organization who can respond. If needed, develop a
good response plan to ensure quick follow-up in the future.
Inspections
Routine inspections are the responsibility of the BMP owner. Maintenance is also the
responsibility of the owner. The BMP owner shall be financially responsible for any
maintenance or repairs required by the City or its representatives during the City’s
inspections. The approval maintenance plan and inspection forms provided with this
manual should be used as guidance for performing maintenance activities. Completed
inspection forms must be maintained by the BMP owner and produced upon request by
the City. The City must be notified of any changes in BMP ownership, major repairs or
BMP failure in writing within 30 days. The letter should be addressed to:
Stormwater BMP Modifications
Department of Engineering
City of Carmel
One Civic Square
Carmel, IN 46032
The City and/or its representatives have the right to enter the property to inspect BMPs.
In the event that the City finds a BMP in need of maintenance or repair, the City will
notify the BMP owner of the necessary maintenance or repairs and give the landowner a
timeframe for completing the maintenance or repairs. If the maintenance or repairs are
not completed within the designated timeframe, the City shall perform the maintenance
or repairs and bill the landowner for the actual costs for the work.
Inspection & Maintenance Activities
Refer to the checklist provided with this manual for operation, maintenance and
inspection of BMP and storm water infrastructure. The checklist is for the use of the
BMP owner in performing routine inspections. The City will perform annual inspections
of BMPs, using similar checklist. The BMP owner must maintain and update the BMP
operations and maintenance plan. At a minimum, the operations and maintenance plan
must include, but is not limited to:
1. Visually inspect and removal of debris from inlet, outlet, and sump structures
2. Removal of woody vegetation from the embankments
BMP owners must routinely inspect BMPs to verify that all BMP components are
functioning as designed and are not in danger of failing. All BMPs need maintenance to
function as water quality and quantity enhancements. Maintenance can range from
dredging sediment out of the treatment area to mowing grass.
The BMP owner agrees to the maintenance and inspection programs attached with this
manual. Inspections must be documented on the inspection forms included in this
Operation and Maintenance Manual.
A self-monitoring program by the project site owner is required during construction and
during a maintenance schedule of any project described. A trained individual employed
or retained by the project site owner shall prepare and maintain a written evaluation of
the project site by the end of the next business day following each measurable Inspection.
Inspection during construction should be after a storm event and at a minimum, one (1)
time a week.
Inspection during the maintenance schedule must routinely inspect all storm water
infrastructure to verify that all components are functioning as designed and are not in
danger of failing. They should be inspected a minimum of an annual basis or upon
observed failure.
Requirements regarding the submittal of annual inspection reports to
the City of Carmel Engineering Department:
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 the City.
Owner Acknowledgment
This Operation and Maintenance Manual is submitted to the City of Carmel with the
intent to insure the longevity and adequate functioning of the BMP Dry Detention Basin
and Mechanical Water Quality Unit (Aqua-Swirl XC-7). By submitting this Operation
and Maintenance Manual to the City of Carmel’s Office with plans to maintain a BMP
BMP Dry Detention Basin and Mechanical Water Quality Unit (Aqua-Swirl AS-3) 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 Signature: Date
_______________________________
Printed
STATE OF INDIANA )
) SS:
COUNTY OF )
BEFORE ME, the undersigned, a Notary Public in and for said County and State,
personally appeared Owners,/Agent,
subscribed and sworn before me this day of , .
County of Residence Signature
Commission Expiration Date Printed Name
LOCATION MAP – NO SCALE
DENOTES PROJECT LOCATION
Site Name:
Owner Name:
Owner Address:
Owner Phone Number:
Emergency Phone Number:
Location:
Date:
Time:
Inspector:
Change in ownership since
last inspection?
Maintenance Item Maintenance (1 or 2)* Maintenance is needed: Comments
Sediment & Debris Accumulated sediment exceeds buildup 1/4" of the
pipe diameter up to maximum of 6"
Vegetation Vegetation that reduces free movement of water
through the pipes
Protective coating is damaged; rust is causing more
than 50% deterioration to any part of the pipe
Any dent that decreases the cross section area of pipe
by more than 20% or puncture that impacts
performance
*Maintenance: Enter 1 if maintenance is need and include WO#. Enter 2 if maintenance was performed same day.
Inspection and Maintenance Checklist
Y OR N
Damaged Pipe
Conveyance Stormwater Pipe
System Maintenance
3
Sediment inspection
using a stadia rod
Inspection
All AquaShield™ products can be inspected from the surface, eliminating the
need to enter the systems to determine when cleanout should be performed.
In most cases, AquaShield™ recommends a quarterly inspection of the
Stormwater Treatment Systems for the first year of operation to develop an
appropriate schedule of maintenance.
Based on experience of the system’s first year in operation, we recommend that
the inspection schedule be revised to reflect the site-specific conditions
encountered. Typically, the inspection schedule for subsequent years is reduced
to semi-annual inspection.
Aqua-Swirl™ Maintenance
The Aqua-Swirl™ has been designed to minimize and simplify the inspection and
maintenance process. The system can be inspected and maintained completely
from the surface, thereby eliminating the need for confined space entry.
Furthermore, the entire structure (specifically, the floor) is accessible for visual
inspection from the surface. There are no areas of the structure that are blocked
from visual inspection or periodic cleaning.
Inspection of any free-floating oil and floatable debris can be directly observed
and maintained through the manhole access provided directly over the swirl
chamber.
Aqua-Swirl™ Inspection Procedure
To inspect the Aqua-Swirl™, a hook is needed to remove
the manhole cover. AquaShield™ provides a customized
manhole cover with our logo to make it easy for
maintenance crews to locate the system in the field. We
also provide a permanent metal information plate attached
inside the access riser, which provides our contact
information, the Aqua-Swirl™ model size, and serial
number.
System Maintenance
4
Vacuum truck cleans the
Aqua-Swirl™
The only tools needed to inspect the Aqua-Swirl™ system are a flashlight and a
measuring device such as a stadia rod or pole. Given the tremendous
accessibility provided, floating oil and debris can be observed directly from the
surface. Sediment depths can easily be determined
by lowering a measuring device to the top of the
sediment pile and to the surface of the water.
When the sediment pile is within 30 to 36 inches of
the water surface, the system should be
maintained.
It should be noted that in order to avoid
underestimating the volume of sediment in the
chamber, the measuring device must be carefully
lowered to the top of the sediment pile. The finer
sediment at the top of the pile, typically offers less
resistance to the measuring device than the larger
particles.
Aqua-Swirl™ Cleanout Procedure
Clean out of the Aqua-Swirl™ is simple. Free-floating oil
and floatable debris can be observed and removed directly
through the 30-inch service access provided.
A vacuum truck can be used to remove the accumulated
sediment and debris. It is important to note that the entire
sediment storage area can be reached with a vacuum hose
from the surface (reaching all the sides).
Disposal of the material is typically treated in the same
fashion as catch basin cleanouts. AquaShield™
recommends that all materials removed be handled and
disposed of in accordance with local and state requirements.
An “Inspection and Maintenance Manual” is provided with each Aqua-Swirl™
system for more detailed maintenance procedures. On the following page, you
will find sample Inspection Data Sheets.
System Maintenance
5
Aqua-Swirl™ Inspection Data Sheet
Location:
Date Inspector
Name
Distance to
Sediment
(in.)
Distance to
Water
(in.)
Floatable
Layer
Thickness
(describe)
Maintenance
Required?
(yes/no)
System Maintenance
6
Aqua-Swirl™ Maintenance Data Sheet
Inspector: Date:
Location: Time:
INSPECTION
General Site Condition
Visible Evidence of Spills/ Releases (oils, grease, fuels, paints, chemicals):
Visible Evidence of Heavy Sediment Deposition:
Swirl
Condition of Swirl:
Condition of Baffle:
Distance to Sediment:
Distance to Water:
**Note: If sediment is less than 30 to 36 inches below water surface, sediment
should be removed.
CONTAMINATION REMOVAL DATA
Floating Oil and Debris
Approx. Volume:
Description:
Elapsed Removal Time:
Sediment
Approx. Volume:
Description:
Elapsed Removal Time:
Other Comments
Site Name:
Owner Name:
Owner Address:
Owner Phone Number:
Emergency Phone Number:
Location:
Date:
Time:
Inspector:
Change in ownership since
last inspection?
Maintenance Item Maintenance (1 or 2)* Maintenance is needed: Comments
Trash or debris which is located immediately in
front of the catch basin opening or is blocking
inletting capacity of the basin by more than
10%
Trash or debris (in the basin) that exceeds 60
percent of the sump depth as measured from the
bottom of basin to invert of the lowest pipe into
or out of the basin, but in no case less than a
minimum of six inches clearance from the
debris surface to the invert of the lowest pipe.
Trash or debris in any inlet or outlet pipe
blocking more than 1/3 of its height.
Dead animals or vegetation that could generate
odors that could cause complaints or dangerous
gases (e.g., methane).
Sediment Sediment (in the basin) that exceeds 60 percent
of the sump depth as measured from the bottom
of basin to invert of the lowest pipe into or out
of the basin, but in no case less than a minimum
of 6 inches clearance from the sediment surface
to the invert of the lowest pipe.
Top slab has holes larger than 2 square inches
or cracks wider than 1/4 inch (Intent is to make
sure no material is running into basin).
Frame not sitting flush on top slab, i.e.,
separation of more than 3/4 inch of the frame
from the top slab. Frame not securely attached
Maintenance person judges that structure is
unsound.
Grout fillet has separated or cracked wider than
1/2 inch and longer than 1 foot at the joint of
any inlet/outlet pipe or any evidence of soil
particles entering catch basin through cracks.
Settlement/Misalignment If failure of basin has created a safety, function,
or design problem.
Vegetation growing across and blocking more
than 10% of the basin opening.
Vegetation growing in inlet/outlet pipe joints
that is more than six inches tall and less than six
inches apart.
Contaminants and Pollution Any evidence of oil, gasoline, contaminants or
other pollutants (Coordinate removal/cleanup
with local water quality response agency).
Cover is missing or only partially in place. Any
open catch basin requires maintenance.
Mechanism cannot be opened by one
maintenance person with proper tools. Bolts
into frame have less than 1/2 inch of thread.
One maintenance person cannot remove lid after
applying normal lifting pressure (Intent is to
keep cover from sealing off access to
maintenance).
Ladder Ladder is unsafe due to missing rungs, not
securely attached to basin wall, misalignment,
rust, cracks, or sharp edges.
Metal Grates Trash and debris that is blocking more than
20% of grate surface inletting capacity.
*Maintenance: Enter 1 if maintenance is need and include WO#. Enter 2 if maintenance was performed same day
Trash & Debris
Y OR N
Vegetation
Catch Basin Cover
Fractures or Cracks in Basin
Walls/Bottom
Structure Damage to Frame and/or
Top Slab
Inspection and Maintenance Checklist
Catch Basins, Manholes, and Inlets
Plan View
SCALE 1:40
Elevation View
SCALE 1:40
Projected View
SCALE 1:70
2733 Kanasita Drive, Suite 111, Chattanooga, TN 37343
Phone (888) 344-9044 Fax (423) 826-2112
www.aquashieldinc.com
Structure #:
Drawn By:
Scale:
Date:
OFlores
6/26/2019
Rvwed Rvw. Date
U.S. Patent No. 6524473 and other Patent Pending
Aqua-Swirl XCelerator
Aqua-Swirl Stormwater Treatment System
Standard Detail
As Shown
el. Varies
Inlet/Outlet Invert
el. Varies
el. Varies
Grade (Rim) el. Varies
XC-7 CCW STD
XC-7 STD
Aqua-Swirl Polymer Coated Steel (PCS)
Stormwater Treatment System
12 in
[305 mm]
Manhole Frame & Cover Detail
For Non-Traffic Areas Only
NTS
4 in
[1219 mm] Min.
Gravel Backfill
Concrete
Wrap Compressible Expansion
Joint Material to a minimum
1/2-inch [13 mm] thickness around
top of riser to allow transfer of
inadvertent loading from
manhole cover to concrete slab.
Riser
Soil
Cover
Frame
1/2 in
[13 mm]
1/2 in
[13 mm]
Place small amount of
concrete [3,000 psi [20
MPa] (min)] to support
and level manhole frame.
DO NOT allow manhole
frame to rest upon riser.
Backfill (90%
Proctor Density)
8 in
[203 mm]
4 1/2 in
[114 mm]
Unless other traffic barriers are present,
bollards shall be placed around access riser(s)
in non-traffic areas to prevent inadvertent
loading by maintenance vehicles.
Manhole Frame & Cover Detail
For Traffic Loading Areas
NTS
Cover
Frame
48 in
[1219 mm] Min.
Backfill (90%
Proctor Density)
3,000 psi [20 MPa]
(min) Concrete
#4 [13 mm] Rebar
@ 6 in [152 mm]
Each Way
30 in [762 mm]
Riser
1/2 in
[13 mm]
4 1/2 in
[114 mm]
14 in
[356 mm]
1/2 in [13 mm] Thick
Expansion Joint
Material
If traffic loading (HS-25) is required or anticipated, a 4-foot [1.22 m]
diameter, 14-inch [356 mm] thick reinforced concrete pad must be
placed over the Stormwater Treatment System Riser to support and
level the manhole frame, as shown. The top of riser pipe must be
wrapped with compressible expansion joint material to a minimum
1/2-inch [13 mm] thickness to allow transfer of wheel loads from
manhole cover to concrete slab. Manhole cover shall bear on concrete
slab and not on riser pipe. The concrete slab shall have a minimum
strength of 3,000 psi [20 MPa] and be reinforced with #4 [13 mm]
reinforcing steel as shown. Minimum cover over reinforcing steel shall
be 1-inch [25 mm]. Top of manhole cover and concrete slab shall be
level with finish grade.
Please see accompanied Aqua-Swirl specification notes. See Site
Plan for actual System orientation. Approximate dry (pick) weight:
3800 lbs [1700 kg].
Backfill shall extend at least 18
inches [457 mm] outward from
Swirl Concentrator and for the
full height of the Swirl
Concentrator (including riser)
extending laterally to
undisturbed soils. (See MH
Detail Below)
Backfill
Bedding
Undisturbed soil
18 in
[457 mm]
6 in
[152 mm]
1
1
As an alternative, 42 in [1067 mm] diameter, HS-20/25
rated precast concrete rings may be substituted. 14 in
[356 mm] thickness must be maintained.
XC-7 inlet/outlet pipe size ranges up to 42 in [1067 mm].
XC-7 chamber height may vary up to 151 in [3835 mm],
depending on inlet/outlet pipe size.
Orientation may vary from a minimum of 90 to a
maximum of 180. Clockwise or counterclockwise
orientation as needed.
2
3
3
2
96 in
[2438 mm]
96 in
[2438 mm]
P42 in
[P1067 mm]
P42 in
[P1067 mm]
2
Octagonal Base Plate
P84 in
[P2137 mm]
85 in
[2159 mm]
151 in
[3835 mm]
Varies Varies
5
[127 mm]
MH Frame
P30 in
[P762 mm]
Band Coupler
by Manufacturer.
(as needed)Riser
Manhole Frame and
Cover by Manufacturer.
(See Details)
Rim elevations to
match finish grade.
Pipe coupling
by Contractor.
12 in [305 mm]
long Stub-out
by Manufacturer.
4
4
Pipe coupling
by Contractor.
12 in [305 mm]
long Stub-out
by Manufacturer.
180P84 in
[P2134 mm]
Optional inlet
orientations available
(See note 4)