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Jefferson Parish East Bank WWTP

Parent Companies:
Jefferson Parish
Parsons ES
EPA Facility ID:
100000091401
Other ID:
L0066630
Facility DUNS:
43088707
Parent Company #1 DUNS:
0
Parent Company #2 DUNS:
0

Location:

Address:
No. 2 Humane Way
Harahan, LA 70183
County:
JEFFERSON
Lat / Long:
29.974, -90.167 (Get map)
Method:
Address Matching - Digitized
Description:
Center of Facility
Horizonal accuracy:
m
Horizontal reference datum:
Source map scale:

Owner/Operator:

Name:
Parsons Engineering Science
Phone:
(504) 736-6299
Address:
P.O. Box 231069
Harahan, LA 70183 -1069
Foreign Address:

Person responsible for RMP implementation:

Name:
Mike Lockwood
Title:
Plant Manager
Email:

Emergency contact:

Name:
Mike Lockwood
Title:
Plant Manager
Phone:
(504) 736-6299
24-hour phone:
(504) 736-6299
Ext or PIN:
Email:

Other contacts:

Facility (or company) email:
Facility phone:
Facility (or company) URL:

Safety:

Local Emergency Planning Committee:
Jefferson Parish ERD
Full-Time Equivalent Employees:
29
Covered by OSHA PSM:
Yes
EPCRA section 302:
Yes
CAA Title Air Operating Permit:
No
CAA Permit ID#:
OSHA Star/Merit Ranking
No
Last Safety Inspection Date:
Inspecting Agency:
Never had one
Using Predictive Filing:
No

Processes:

Unspecified process
RMP ID:
8731
CBI claimed:
No
Program Level:
3
NAICS:
Sewage Treatment Facilities (22132)
Chemical name
CAS#
Quantity (lbs.)
CBI
Chlorine
7782-50-5
110,000
No
Public OCA Chemical
0
No

RMP Preparer:

Name:
Address:

,
Foreign Address:

Phone:

Latest RMP Submission:

Date:
June 21, 1999
Type:
First-time submission
Reason:
Registered:
No
RMP ID:
7239

Deregistration:

Date:
Effective Date:
Reason:
Source no longer uses any regulated substance
Other Reason:

2. Toxics: Worst-case

Some Risk Management Plan information is not provided in the available RMP data. You need to make an appointment at an EPA Reading Room In order to get access to details from the Off-Site Consequence Analysis (OCA) such as:

Instructions on how to make an EPA appointment can be found here.

Public OCA Chemical (in Unspecified process)
CBI claimed:
No
Percent weight:
99.5
Physical state:
Gas liquified by pressure
Model used:
EPA's RMP Guidance for Waste Water Treatment Plants Reference Tables or Equations
Release duration (mins):
10.00
Wind speed (meters per sec):
1.5
Stability class:
F
Topography:
Urban
Passive mitigation
considered:
  • None
not considered:
  • Dikes
  • Enclosures
  • Berms
  • Drains
  • Sumps

3. Toxics: Alternative release

Some Risk Management Plan information is not provided in the available RMP data. You need to make an appointment at an EPA Reading Room In order to get access to details from the Off-Site Consequence Analysis (OCA) such as:

Instructions on how to make an EPA appointment can be found here.

Public OCA Chemical (in Unspecified process)
CBI claimed:
No
Percent weight:
99.5
Physical state:
Gas liquified by pressure
Model used:
EPA's RMP Guidance for Waste Water Treatment Plants Reference Tables or Equations
Wind speed (meters per sec):
1.50
Stability class:
D
Topography:
Urban
Passive mitigation
considered:
  • None
not considered:
  • Dikes
  • Enclosures
  • Berms
  • Drains
  • Sumps
Active mitigation
considered:
  • Emergency shutdown
not considered:
  • Sprinkler systems
  • Deluge systems
  • Water curtain
  • Neutralization
  • Excess flow valve
  • Flares
  • Scrubbers

4. Flammables: Worst-case

None

5. Flammables: Alternative release

None

6. Five-year accident history

No Registered Accidents

7. Prevention: Program level 3

, Sewage Treatment Facilities (22132)
Prevention Program ID:
3857
Safety Review Date
Dec. 1, 1997, since latest RMP submission
PHA Update Date
Feb. 1, 1997, since latest RMP submission
PHA Techniques
  • What if
Hazards Identified
  • Toxic release
  • Equipment failure
  • Cooling loss
  • Hurricanes
Process Controls
  • Vents
  • Relief Valves
  • Check Valves
  • Manual Shutoffs
  • Automatic Shutoffs
  • Interlocks
  • Alarms
  • Emergency Air Supply
  • Rupture Disks
  • Excess Flow Device
Mitigation Systems
  • None
Monitoring Systems
  • Process Area
  • Perimeter Monitors
Changes since PHA
  • None
Training Type
  • On the Job
Competency Testing
  • Demonstration
  • Observation
Procedure Review Date
June 3, 1998, since latest RMP submission
Training Review Date
June 3, 1998, since latest RMP submission
Maintenance Review Date
June 3, 1998, since latest RMP submission
Maintenance Inspection Date
Nov. 16, 1998, since latest RMP submission
Equipment Tested
Yes
Management of Change Most Recent Date
None
Management of Change Review Date
Nov. 23, 1998
Pre-startup Review Date
Nov. 23, 1998
Compliance Audit Date
None
Compliance Audit Change Completion Date
None
Incident Investigation Date
None
Incident Invest. Change Completion Date
None
Participation Plan Review Date
Nov. 23, 1998
Hot Work Review Date
Nov. 23, 1998
Contractor Safety Review Date
June 3, 1998, since latest RMP submission
Contractor Safety Eval. Date
None, since latest RMP submission

8. Prevention Program level 2

No Prevention Program level 2

9. Emergency response

Facility In Community Plan:
Yes
Facility Own Response Plan:
No
Specific Facility Response Plan:
No
Inform. Procedures in Response Plan:
No
Emergency Care in Response Plan:
No
Plan Review Date:
Response Training Date:
None
Local Response Agency:
Local Response Agency Phone:
(504) 349-5360
Subject To - OSHA EAP:
No
Subject To - OSHA HAZWOPER:
No
Subject To - CWA:
No
Subject To - RCRA:
No
Subject To - OPA:
No
Subject To - State EPCRA:
Yes
Subject To - Other:

Executive Summary

JEFFERSON PARISH
EAST BANK WASTEWATER TREATMENT PLANT
HARAHAN, LOUISIANA
L0066630

The Jefferson Parish East Bank Wastewater Treatment Plant (EBWWTP) has prepared and implemented a Risk Management Program in accordance with the Chemical Accident Prevention Provisions of 40 Code of Federal Regulations (CFR) Part 68 to prevent the accidental release of chlorine and exposure to EBWWTP personnel and members of the community, as well as to the environment. This Risk Management Plan (RMP) encompasses all the elements of the Risk Management Program.

The EBWWTP is located in Harahan, Louisiana, 10 miles west of New Orleans, Louisiana. Chlorine is used to disinfect the wastewater prior to discharge to the Mississippi River. The facility is designed to treat an average wastewater flow of 33 million gallons per day (MGD) in dry flow and 56 MGD in wet flow. Chlorine at the facility is contained in one 55-ton railcar.

The chlorine building and railcar area at EBWWTP have separate chlorine alarm systems, which continuously monitor the area for chlorine gas leaks. The facility is equipped with visible and audible alarms to alert personnel if a release occurs. EBWWTP personnel are routinely trained to safely operate the chlorination system. The EBWWTP preventive maintenance program ensures that equipment related to chlorine operations is fully operational. Accidental release prevention and emergency response policies at the EBWWTP emphasize safety, training, and maintenance.

A worst-case release scenario was estimated, based on the United States Environmental Protection Agency (EPA) guidance, to provide the greatest distance in any direction to the established toxic endpoint. The worst-case release quantity, established by the regulations, is the greatest amount of chlorine held in a single vessel. In accordance with 40 CFR ' 68.25, it is assumed that this quantity is released over a 10 minute period.

No administrative controls or mitigation measures were considered f
or the worst-case release scenario. Tables from the EPA and Chemical Emergency Preparedness and Prevention Office (CEPPO) Risk Management Program Guidance for Wastewater Treatment Plants (EPA 550-B-98-010; October 1998) (EPA Guidance tables) were used to determine the distance to the toxic endpoint for the worst-case release scenario. The population (public receptors) was estimated within this radius using 1990 U.S. Census information. Environmental receptors are also located within this radius.

The five-year accident history was investigated to determine an alternative release scenario. Since no accidents have occurred in the last five years (since 1994), the EPA Region VI was consulted to determine likely accidents involving chlorine railcars, which have occurred at other facilities. It was determined that the most likely scenario for a chlorine release would be a broken whip.

Under the alternative release scenario, it is assumed that the whip is broken. Liquid chlorine is released from the broken whip and the underground piping for approximately one minute. The one minute release time is the maximum expected period of time that would have elapsed between the time the chlorine leak detector detects a 1 ppm ambient air chlorine concentration and the interlocked pneumatic control valve is closed. This scenario results in a calculated chlorine release rate of 175 lbs/min. Eighty pounds is a conservative estimate of the amount of chlorine contained in the whip and the underground piping.

An active mitigation measure, the pneumatic control valve interlock, was included for this release scenario. An air dispersion modeling program was used to determine the distance to the toxic endpoint for the alternative release scenario. The number of public receptors is estimated within this radius. No environmental receptors are located within this radius.

The EBWWTP has developed an accidental release prevention program. The primary safeguard is the chlorine leak
detection system located at the chlorine building and railcar. The leak detection sensors are manually checked on a weekly basis to ensure they are functioning properly. Operators inspect the facility every two hours to ensure the chlorine feed system is functioning properly. Audible and visible alarms are located at the chlorine building and at the railcar. A yellow light illuminates when an ambient air chlorine concentration of 0.5 ppm is detected. A red light illuminates and the audible alarm sounds when an ambient air chlorine concentration of 1.0 ppm is detected.

The EBWWTP has several measures built into the chlorine system to control a chlorine release. A valve, located after the expansion chamber, is interlocked with the building leak detector at the evaporator inlet. This valve will close in the event that a leak is detected. A pressure relief line will allow chlorine to escape through the back wall of the building from the evaporator inlet line. This pressure relief occurs when too much chlorine is forced into the chlorinators. As noted above, the railcar leak detector is interlocked with the whip control valve. All valves are controlled pneumatically with a compressor. A power loss or loss of air to the valves will cause the valves to close. This type of valve is referred to as "fail close."

The EBWWTP has established several programs to prevent accidental chlorine releases. Specifically, the facility trains operators to properly operate the chlorination process, uses state-of-the-art safety equipment, and implements a preventive maintenance program to ensure the process equipment is operating properly.

The EBWWTP personnel are trained to respond to an incidental release of chlorine. In the event that a release is beyond the control of the operators, personnel have a mechanism established to notify the Jefferson Parish Emergency Management Department. Safety equipment available on-site includes self-contained breathing apparatus (SCB
A), a Cascade supplied breathing air system, and emergency valve capping Kit 'C' (C Kits).