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City of West Monroe Wastewater Treatment Plant

Parent Companies:
EPA Facility ID:
100000087425
Other ID:
LA0043982
Facility DUNS:
980744171

Location:

Address:
250 East Martin
West Monroe, LA 71292
County:
OUACHITA
Lat / Long:
32.458, -92.153 (Get map)
Method:
Interpolation - Digital map source (TIGER)
Description:
Plant Entrance (General)
Horizonal accuracy:
3 m
Horizontal reference datum:
World Geodetic System of 1984
Source map scale:

Owner/Operator:

Name:
City of West Monroe
Phone:
(318) 325-0496
Address:
303 West Pavilion Drive
West Monroe, LA 71292 -4239
Foreign Address:

Person responsible for RMP implementation:

Name:
Terry Emory
Title:
Environmental Quality Manager

Emergency contact:

Name:
Terry Emory
Title:
Environmental Quality Manager
Phone:
(318) 322-6026
24-hour phone:
(318) 381-6476
Ext or PIN:

Other contacts:

Facility (or company) email:
Facility phone:
(318) 325-0496
Facility (or company) URL:

Safety:

Local Emergency Planning Committee:
Ouachita Parish LEPC
Full-Time Equivalent Employees:
13
Covered by OSHA PSM:
No
EPCRA section 302:
No
CAA Title Air Operating Permit:
No
CAA Permit ID#:
OSHA Star/Merit Ranking
No
Last Safety Inspection Date:
Aug. 28, 2014
Inspecting Agency:
LDEQ
Using Predictive Filing:
No

Processes:

Wastewater Disinfection
RMP ID:
1000072745
CBI claimed:
No
Program Level:
2
NAICS:
Sewage Treatment Facilities (22132)
Chemical name
CAS#
Quantity (lbs.)
CBI
Chlorine
7782-50-5
12,000
No
Public OCA Chemical
0
No

RMP Preparer:

Name:
Terry Emory
Address:
303 West Pavilion Drive
West Monroe, LA 71292
Foreign Address:

Phone:
(318) 325-0496

Latest RMP Submission:

Date:
June 13, 2016
Type:
Resubmission
Reason:
5-year update (40 CFR 68.190(b)(1))
Registered:
Yes
RMP ID:
1000058217

Deregistration:

Date:
Effective Date:
Reason:
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 Wastewater Disinfection)
CBI claimed:
No
Percent weight:
Physical state:
Gas liquified by pressure
Model used:
EPA's RMP*Comp(TM)
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 Wastewater Disinfection)
CBI claimed:
No
Percent weight:
Physical state:
Gas
Model used:
EPA's RMP*Comp(TM)
Wind speed (meters per sec):
3.00
Stability class:
D
Topography:
Urban
Passive mitigation
considered:
  • None
not considered:
  • Dikes
  • Enclosures
  • Berms
  • Drains
  • Sumps
Active mitigation
considered:
  • None
not considered:
  • Sprinkler systems
  • Deluge systems
  • Water curtain
  • Neutralization
  • Excess flow valve
  • Flares
  • Scrubbers
  • Emergency shutdown

4. Flammables: Worst-case

None

5. Flammables: Alternative release

None

6. Five-year accident history

No Registered Accidents

7. Prevention: Program level 3

No Prevention Program level 3

8. Prevention Program level 2

Wastewater Disinfection, Sewage Treatment Facilities (22132)
Prevention Program ID:
1000045689
Safety Review Date
April 29, 2016, since latest RMP submission
PHA Update Date
, since latest RMP submission
Safety Regulations
  • None
Hazards Identified
  • Toxic Release
  • Corrosion
  • Equipment failure
  • Floods
  • Tornado
  • Hurricanes
Process Controls
  • None
Mitigation Systems
  • None
Monitoring Systems
  • Process Area
Changes since PHA
  • None
Training Type
  • Classroom
  • On the Job
Competency Testing
  • Written Test
  • Demonstration
Procedure Review Date
April 29, 2016, since latest RMP submission
Training Review Date
June 1, 2016, since latest RMP submission
Maintenance Review Date
April 29, 2016, since latest RMP submission
Maintenance Inspection Date
April 22, 2016, since latest RMP submission
Equipment Tested
Yes
Management of Change Most Recent Date
Management of Change Review Date
Pre-startup Review Date
Compliance Audit Date
April 29, 2016
Compliance Audit Change Completion Date
July 1, 2016
Incident Investigation Date
None
Incident Invest. Change Completion Date
None
Participation Plan Review Date
Hot Work Review Date
Contractor Safety Review Date
, since latest RMP submission
Contractor Safety Eval. Date
, since latest RMP submission

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:
(318) 322-2641
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:
No
Subject To - Other:

Executive Summary

The City of West Monroe is fully committed to chemical safety at our wastewater treatment plant. In order to achieve this we have developed operating procedures, an emergency operating and response program, and continuing training for our operators.

The West Monroe Wastewater Treatment Plant is located in a somewhat isolated area south of West Monroe, Louisiana. The plant is bordered on the north by a wooded area, to the east by papermill wastewater treatment ponds, to the south by a wooded area, and to the west by a wooded area followed by a flood control levee protecting a residential area. Access to the plant is by means of East Martin Street going over the levee off Louisiana State Highway 34.

The plant is described as a Hydrograph Controlled Release plant which depends upon the water flow in the Ouachita River for its discharge limits. The discharge parameters include BOD, pH, TSS, FC, and total residual chlorine. The plant treats domestic and industrial sewerage for both the City of West Monroe and West Ouachita Sewerage District #5. The plant consists of parallel 50 acre oxidation ponds for primary treatment with upflow rock filters and disinfection by chlorination and dechlorination used for secondary treatment. The treated water is then discharged into the Ouachita River.

Chlorination is accomplished through the use of two one ton cylinders with two on standby. This ensures a continous process for removing the pathogens from the wastewater. The chlorine gas flows from the cylinders via cylinder mounted regulators, going through vacuum lines and finally being injected into the water stream If for any reason vacuum is lost, such as power failure, tubing breakage, ect., the regulators automatically stop the flow of chlorine. This ensures a safe process.

Included in the chlorination process is the dechlorination process. This process consists of two one ton cylinders feeding sulfer dioxide into the water stream at a
post chlorination location. The purpose of this process is to remove chlorine from the water before discharge into the receiving stream. This process uses identical procedures and safeguards as does chlorination. These are the only processes involving toxic chemicals and are the only processes covered by the risk management plan. Since April 30, 2012, the plant rarely discharges tot he river. Treated effluent is not dechlorinated when it is pumped to the Sparta Reuse Facility where it is treated to meet all EPA primary and secondary drinking water limits and then pumped to the local papermill for use as process water

The worse-case scenario contained in this RMP was modeled using EPA'S RMP Comp. It assumes the rupture of either a one ton chlorine or sulfer dioxide cylinder, which are the largest vessels on site. The alternative scenario was also based on EPA'S RMP Comp. It assumes a failure of a pressure regulator on a chlorine or sulfer dioxide cylinder. Neither scenario assumes any active or passive mitigation measures.

In the previous five yearsn there has been one release of chlorine. This involved less than one pound of chlorine which had condensed in a regulator. There were no injuries or evacuations, although emergency personnel did respond.

The City of West Monroe Wastewater Treatment Plant is included in the written community emergency plan handled by the Ouachita Civil Defense Agency. Plant personnel would not respond to an emergency release. Primary responders would be the Ouachita Parish Fire Department and the City of West Monroe Fire Department.

Ongoing safety upgrades are a continuing process at the City of West Monroe Wastewater Treatment Plant. Hazards identified with the last hazard review are in the process of being corrected at this time.