HomeMy WebLinkAboutOperations & Maintenance Manual
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Operations & Maintenance Manual
(Aqua-Swirl AS-2)
Weston Pointe Retail Center - Lot 3
U.S. 421 & Weston Pointe Drive
Carmel, Indiana
Project Number 07-170
Prepared for:
Williams Realty
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Prepared by:
Civil Designs
2415 Directors Row, Suite E
Indianapolis, Indiana 46241
June 12,2007
Prepared by:
James Peck, PE
Michael Thompson II, E.I.
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Aqua-Swirl ™
Operation, Maintenance, and Inspection Manual for BMP Owners
City of Carmel, Indiana
(Note: Attach certifications for local regulatory authority including any applicable fees.)
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-Swirt™.
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_Swirl™ 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 an 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-SwiriTll.' 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 2
Figure 1
Aqua-Swirl™ 0 and M Manual
Page 1
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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 structuf3,1 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.
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Call a local vactor company to 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 AquaSwirl™ should not be dumped back into the
storm water system or into a sanitary sewer.
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Figure 3
Note: The AquaSwirl 1M is designed so that entry to the system is not riecessary for inspection or maintenance. If, however,
you wish to enter the system, this is an OSHA confined space entry arid OSHA confined space entry procedures should be followed
to enter the system.
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During Construction
Inspect the AquaSwirl ™ every three months (minimum) and clean the system as needed. The AquaSwirl ™ should be inspected and
cleaned at the end of construction regardless of whether it has reached its sediment or oil storage capacity.
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First Year Post-Construction
Inspect the AquaSwirl ™ every three months and dean the system as needed.
Inspect and clean the system once annually regardless of whether it has reached its sediment or floatable pollutant storage capacity.
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Second and Subsequent Years Post-Construction
If the AquaSwirl"~ 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 AquaSwirl™ 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 AquaSwirl ™ should be cleaned
annually regardless of whether it reaches its sediment or floatable pollutant capacity.
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Bypass Structures
Bypass structures should be inspected whenever the AquaSwirl™ is inspected and maintained as needed.
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Aqua-Swirl™ 0 and M Manual
Page :2
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Company Name:
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Street Address:
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City, State, Zip:
Contact:
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Office Phone:
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Mobile Phone:
Pager:
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Date of cleaning:
(Next inspection should be 3 months from this date for the first year).
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Time of cleaning:
Date of next inspection:
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Floatable debris present (Y/N)?
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Oil present (Y/N)?
Oil depth (inches):
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Any structural damage?
y
N
Where?
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Any evidence of structural wear?
Y
N
Where?
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Odors present?
Y
N
Describe:
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Any plugging?
y
N
Describe:
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Aqua-Swirl™ 0 and M Manual
Page 3
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Additional Comments and/or Actions to Be Taken
Time Frame
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NOTES:
1. Attach site plan showing Aqua-Swirl ™ location.
2. Attach detail drawing showing Aqua-Swirl ™ dimensions and model number.
3. If a diversion structure is used, attached details showing basic design and elevations.
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Aqua-Swirl™ 0 and M Manual
Page 4
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U Date Construction Started:
Date Construction Ended:
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Activity
Inspect and Clean as Needed
2
3
X
4
5
8
9
X
10
11
12
X
Inspect Bypass Structures
(if applicable) and Maintain
As Needed
X
X
X
X
Clean System"
X"
. The AquaSwirl™ 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
Inspect and Clean as Needed
2
3
X
4
5
8
9
X
10
11
12
X
Inspect Bypass Structures
(if applicable) and Maintain
As Needed
)(
x
x
X
Clean System'
X'
, The AquaSwirl™ should be cleaned once a year regardless of whether it has reached full pOllutant
storage capacity.
Activity
Inspect and Clean as Needed"
2
3
4
5
8
9
10
11
12
X
Inspect Bypass Structures"
(if applicable) and Maintain
As Needed
x
X
Clean System'
x
x
'If the AquaSwirl™ 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 AquaSwirl™ 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 AquaSwirl™ should be cleaned annually regardless of whether it
reaches its sediment or floatable pollutant capacity. External bypass structures should be inspected whenever the
AquaSwirl™ is inspected and maintained as needed.
Aqua_Swirl™ 0 and M Manual
Page 5
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AQUA-SWIRL ™ SPECIFICATION NOTES
1. Manufacturer shall be responsible for
complete assembly of Swirl Concentrator.
2. Swirl Concentrator shall be fabricated from,
high-density polyethylene (HDPE) ASTM F
714 cell class 345464C per ASTM D 3350.
The Swirl Concentrator wall (greater than 54"
OD) shall be fabricated from profile wall
HOPE ASTM F 894 RSC 250.
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3. HDPE stub outs and internal components
shall be extrusion welded using accepted
welding practices. Stub outs shall be
supplied by Manufacturer and welded on
inside and outside.
4. If lifting eyes disturb grade elevation (rim),
or concrete pad rebar alignment, they may
be cut in field after installation of Swirl
Concentrator by Contractor.
S. Manufacturer shall supply direct access to
Swirl Concentrator via 32-inch 00 riser(s),
which can be field cut to match finished
grade by Contractor.
6. Contractor shall supply pipe couplings to
and from Swirl Concentrator, which shall be
Fernco or Mission style neoprene boot with
stainless steel tension bands and shear
guard.
For corrugated plastic pipe, or pipe with a
diameter of 24" or larger, it is recommended
that Contractor use a Mar Mac coupling
(www.marmac.com). or equal, with adhesive
mastic and tightening bands to create a
watertight seal around the joint. The joint
shall then be immobilized with a concrete
collar with compacted base as described in
either Note 11 or 12 herein. Mar Mac, or
equal, couplings shall overlap the pipe joint a
minimum of 1 foot on either side.
7. Contractor shall prepare excavation and
off-load Swirl Concentrator. Contractor is
responsible for bedding and backfill around
Swirl Concentrator as detailed on site plan.
(see notes 11 and 12)
8. Manufacturer shall supply standard
manhole frame(s) and cover(s). (Traffic
rated H20)
9. Where traffic loading (H-20) is required or
anticipated, a reinforced concrete pad must
be placed over the entire Swirl Concentrator
per concrete design as calculated by
Engineer. Sample of typical concrete design
detail is available upon request.
10. Unless other traffic barriers are present,
bollards shall be placed around access risers
in non-traffic areas to prevent inadvertent
loading by maintenance vehicles. Sample of
typical bollard .installation detail and
recommended locations of bollards around
the Swirl Concentrator can be provided upon
request.
11. Excavation and Bedding - The trench and
trench bottom shall be constructed in
accordance with ASTM D-2321, Section 6,
Trench Excavation, and Section 7,
Installation. The HOPE Swirl Concentrator
shall be installed on a stable base consisting
of 12-inches' of Class I stone materials as
defined by ASTM 02321, Section 5,
Materials, and compacted to 95% proctor
density. All required ,safety precautions for
Swirl Concentrator installation are the
responsibility of the Contractor.
12. Backfill Reauirements - Backfill materials
shall be Class I Stone or Class II materials
(well graded gravels, gravelly sandsi contains
little or no fines), as defined by ASTM D2321,
Section 5, Materials, and compacted to 90%
proctor density. Class I stone is preferred.
Backfill and bedding materials shall be free of
debris. Backfilling shall conform to ASTM
F1759, Section 4.2, "Design Assumptions".
Backfill shall extend at least 42 inches
outward from Swirl Concentrator and for the
full height of the, Swirl Concentrator
(including riser(s)) extending laterally to
undisturbed soils.