violation - the City of Kenner

City of Kenner
Sewerage System
Prepared by: Prat P. Reddy, P.E., Deputy CAO
Presented by: Joanne L. Massony, Project Mgr., Veolia Water

The Kenner Sewer System consists of:
• Collection System
‣ Main gravity lines.
‣ Service lines (house connections).
‣ Manholes.
• Lift Stations
‣ Force mains (pressure line).
• Treatment Plants
‣ Originally, Kenner had (3) plants, which were consolidated
into one (1) plant, known as Kenner Wastewater Treatment
Plant.
‣ During the consolidation period from 2004 – 2006, Plant No.
3’s capacity was increased by 5 million gallons per day
(MGD).
‣ The present treatment capacity of the plant is 13.5 MGD.

Sewerage System for City of Kenner
• 360 Miles Of Gravity Sewer
Lines and Service Laterals
• 31 Miles of Force Mains
• 4,100+ Sewer Manholes
• 79 Lift Stations
ti

The aforementioned sewer system
infrastructures are identified below.
48-inch force
main
31 miles
LIFT
STATIONS 79
4-inch
4,100+
6-inch
178 miles
182 miles
Kenner Sewerage System Components

24 th &
Delaware LS
10 th & Maria
LS
24 th & Delaware
Service Area

4 MGD
LS

CHATEAU
TRANSFER
LS

KENNER’S AGING &
DETERIORATING
SEWERAGE SYSTEM

The Major Issues in the Kenner
Wastewater System:
• Inflow/Infiltration (I&I).
• Sanitary sewer overflows (SSOs).
These issues are attributed to:
‣ Blockages due to grease, sand, and/or tree root intrusion.
‣ Aging sewer lines – terra cotta, transite, asbestos cement
pipes, etc.
‣ Sagging sewer lines – due to soil subsidence and
settlement.
‣ Broken/cracked lines or offset joints.
‣ Inadequate pumping p capacity of the lift station.
‣ Inadequate capacity of the gravity lines and/or force mains.

INFLOW AND INFILTRATION
OCCURS ON BOTH PUBLIC AND PRIVATE PROPERTIES
INFLOW (I)
INFILTRATION (I)
Storm water (rain)
The groundwater enters
infiltrates the sanitary
the sewerage collection
sewerage system from:
system through:
•roof down spouts.
•open pipe joints
•storm drain lines.
•cracked/broken pipes.
• •yard dd drain connections.
•offset t joints.
•flooded streets.
•root intrusion.

INFILTRATION GRAPH
I & I Results in Sewer Backups & Overflows
Rainfall
Influent Flow to Plant
Effluent Flow to River
PLANT SCADA
SEWER FLOW
RAINFA
ALL

Rainfall
Influent Flow to Plant
Effluent Flow to River
INFILTRATION GRAPH
January 2008
PLANT SCADA
SEWER FL
LOW
RAINFA
ALL

INFILTRATION EFFECTS ON PLANT
CAPACITY
February 2008
Rainfall
Influent Flow to Plant
Effluent Flow to River
SE EWER FLOW
RAINFALL L

Causes of
Inflow and Infiltration
Public & Private

PUBLIC SEWER SYSTEM
Cracked/Collapsed Broken Pipes

PUBLIC SEWER SYSTEM
Missing & Offset Joints and Protruding Taps
VIDEO

PUBLIC SEWER SYSTEM
Deteriorated, Leaking Manholes

PUBLIC SEWER SYSTEM
Tree Roots
Soil Subsidence and Settlement Effects
on gravity sewer lines

PUBLIC SEWER SYSTEM
Ground Water Infiltration

PRIVATE SEWER LINES
(4-inch sewer line from house to property line)
Missing/Broken Clean-out Covers
• For example: In the 33 rd and
Hans sub-basin, the following
residences had missing
cleanout caps:
‣ 3032 Illinois
‣ 3202 Illinois
‣ 3201 Illinois
‣ 3201 Indiana
‣ 3209 Indiana
da a
‣ 2110 31 st Street
• During smoke testing, smoke
was rising from open cleanouts.

Private Property Cleanout Cap
Replacements (Cont’d)
• In the 21 st
and Kentucky sub-basin, smoke
testing revealed 22 residences with missing
cleanout caps on Iowa, Kansas, Kentucky,
and parts of Roosevelt.
• 15 – 20% of residences may have missing or
broken cleanout caps, which is common
throughout the City.

PRIVATE
Roof Drainage Downspout - Smoke Testing
DEFECTIVE LINE
NON-DEFECTIVE LINE
• Smoke rising from the
residence’s open 4-inch
cleanout near the roof
down spout.
• Therainwater from the
down spout will flow into
the private sewer line.
• When there are no
defects in the private
sewer line, smoke
should flow from the
roof vent stacks as
depicted above.

PRIVATE
Yard Drain Connections

PRIVATE SEWER SYSTEM
Broken Pipes Under Slab
For Example:
• During
the
evaluation
and
smoke testing of the 21 st and
Kentucky sub-basin
basin, in a 6
block (E-W)
by 4block
(N-S)
area between Roosevelt and
Illinois, approximately sixteen
(16
16) residences were found
to have broken sewer lines
under
their
house,
porch,
concrete
slab,
driveway
and/or in backyards.

PRIVATE SEWER SYSTEM
Broken Pipes Under Slab
21 st and Kentucky
LS sub-basin:
• At 2503 21
st Street
when smoke testing
was performed
during the sewer
system evaluation,
smoke rose from
under the house
which depicted a
broken private sewer
line.

I & I Results in Sewer Backups,
Overflows, and Bypasses Causing:
• Structural Weakening of Slabs
• Unhealthy h & Unsafe Environmental
Conditions
• Attracts t Rodent, Mosquitoes and other
Vermin
• Excessive Operation & Maintenance Cost
• Degradation of Water Quality in Lakes,
Bayous, River, etc.

I & I Results in Sewer Backups, Overflows,
and dB Bypasses Causing Permit itVi Violations
• Violation of Clean Water Act, Regulatory Fines, Legal
Action, etc. (R.S. 30:2076.2 and 30:2025, rev. 4/25/07)
‣ Negligent Violation: $2,500
to $25
25,000
per day/not more than 1
yr. imprisonment, or both.
‣ Known Violation (First violation):
Fine of not less than $5,000
nor
more
than $50
50,000
000 per
day
of
violation
or 3 yrs.
of
imprisonment, or both.
‣ Known endangerment:
Fine of not more than $250
250,000
000 or $1
million or imprisonment of not more than 15 years, or both.
‣ Civil Penalties: $32
32,500
per day for each violation.
When a
violation results in a discharge or disposal which causes serious
damage to the environment, endangers human life or health, may
be liable for an additional penalty of not more than $1 million.

I & I Results in Sewer Backups, Overflows, and
Bypasses Causing Permit Violations (Cont’d)
• On May 18, 2004, the Louisiana Department of Environmental
Quality (LDEQ) issued a Compliance Order with Notice of
Potential Penalty for 265 sewer system overflows (SSOs),
which occurred between Sept. 1, 2001 –Jan
Jan. 31, 2004.
• From Jan. 2004 –April
2008, 365 overflows were reported
to the LDEQ. These are not a part of the aforementioned
Order.
• For 265 SSOs, the approximate fine for Negligent Violations
could be $662
662,500
to $6,625
625,000
000, OR $8,612
612,500
for Civil
il
Penalties, etc.
• If LDEQ include the above 365 overflows, which occurred,
from Jan. 2004 – Apr. 2008, the fine could be significantly
greater ($912
912,500
to $9,125
125,000
OR $11
11,862
862,500
for civil
penalties).
**As such, the maximum fine could be: $15
15,750
750,000
000 for
negligent violations OR $20
20,475
475,000
000.

I & I Results in Sewer Backups, Overflows, and
Bypasses Causing Permit Violations i (Cont’d)
• The City submitted an executive report to
the LDEQ, detailing the $10+ million of
planned improvements to the collection
system
and lift
stations
that
were
completed during the 2005 to 2008 fiscal
years.
• However, the City is still awaiting the
LDEQ’s decision regarding the Order and
potential penalty.

I&I and Overflow Abatement
Proposed Funding Sources
• To continue sewer collection system and lift station
high priority improvements, funding of approximately
$20
-$25
million is required.
• Federal funding requests are being proposed for the
following projects:
‣ Approx. $3 million for lift stations (LRA/CDBG).
‣ Approx. $6.2 million
under
the
Coastal
Wetlands
Protection and Restoration Act (Breaux Act) for effluent
discharge into the LeBranche Wetlands.
‣ Approx. $5 million under the Section 219 of the Water
Resources Development
Act of 1992 (WRDA), as
amended, for wastewater infrastructure improvements
(Project 57).
‣ Replace the existing Chateau Transfer Station 36-inch
diameter
Price Brothers force main pipe to the Kenner Wastewater Plant.

Corrective Action Required On Both
Public And Private Properties:
• Private sewer line problems could account
for 15 -20
20% of the City’s I&I problem.
‣Corrective
actions include:
• Notification to property owner of the sewer problem
and possible code violations (Plumbing Code and
Wastewater Ordinance).
• Liens on property until the violations are corrected.
• Increase sewer user fee to correct the aforementioned
violations.
• Public
property I & I abatement
alone
would
not
solve
the
aforementioned
issues.

Public I & I and SSO Abatement
Corrective Action:
Replacement, Rehabilitation and/or Upgrades are
required for the following sewer infrastructure:
t
• lift stations (high priority projects).
• gravity sewer lines (selected areas based upon
sewer
system evaluation
studies and
service
requests).
• sewer force mains (major/aged high pressure lines).

I & I Possible Funding
Solutions for Public Property
• Bond funds.
• Increase Sewer User Fee based on the
annual lC Consumer Pi Price Index (CPI).
• Annual capital funding.

City of Kenner
Sewerage System
THANK YOU