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Beaver Dam Creek Gas Plant

Parent Companies:
Whittier Energy Company
EPA Facility ID:
100000035268
Other ID:
Facility DUNS:
0
Parent Company DUNS:
0

Location:

Address:
Highway 16 at Highway 63
Watson, LA 70786
County:
ST. HELENA
Lat / Long:
30.659, -90.808 (Get map)
Method:
GPS - Unspecified
Description:
Storage Tank
Horizonal accuracy:
m
Horizontal reference datum:
Source map scale:

Owner/Operator:

Name:
Whittier Energy Company
Phone:
(713) 860-1347
Address:
3355 West Alabama, Ste 950
Houston, TX 77098
Foreign Address:

Person responsible for RMP implementation:

Name:
Daniel H. Silverman
Title:
Vice President
Email:

Emergency contact:

Name:
Ivan Green
Title:
Contract Gauger
Phone:
(225) 637-3478
24-hour phone:
(225) 777-4503
Ext or PIN:
Email:
N/A

Other contacts:

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

Safety:

Local Emergency Planning Committee:
St. Helena Parish LEPC
Full-Time Equivalent Employees:
1
Covered by OSHA PSM:
No
EPCRA section 302:
Yes
CAA Title Air Operating Permit:
No
CAA Permit ID#:
OSHA Star/Merit Ranking
No
Last Safety Inspection Date:
Feb. 1, 2002
Inspecting Agency:
State environmental agency
Using Predictive Filing:
No

Processes:

NGL Production & Storage
RMP ID:
38594
CBI claimed:
No
Program Level:
1
NAICS:
Natural Gas Liquid Extraction (211112)
Chemical name
CAS#
Quantity (lbs.)
CBI
Propane
74-98-6
37,195
No
Public OCA Chemical
0
No

RMP Preparer:

Name:
CARR ENVIRONMENTAL GROUP, INC.
Address:
12707 I-45 NORTH FREEWAY, SUITE 585
HOUSTON, TX 77060
Foreign Address:

Phone:
(281) 872-9300

Latest RMP Submission:

Date:
Nov. 1, 2002
Type:
Resubmission
Reason:
Registered:
No
RMP ID:
26927

Deregistration:

Date:
Effective Date:
Reason:
Other
Other Reason:
Source no longer produces NGL at this plant.

2. Toxics: Worst-case

None

3. Toxics: Alternative release

None

4. Flammables: 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 NGL Production & Storage)
CBI claimed:
No
Model used:
EPA's RMP*Comp(TM)
Passive mitigation
considered:
  • None
not considered:
  • Blast walls

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

No Prevention Program level 2

9. Emergency response

Facility In Community Plan:
Yes
Facility Own Response Plan:
No
Specific Facility Response Plan:
Yes
Inform. Procedures in Response Plan:
No
Emergency Care in Response Plan:
Yes
Plan Review Date:
Response Training Date:
June 21, 1999
Local Response Agency:
Local Response Agency Phone:
(225) 222-4413
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

This Risk Management Plan is for the Beaver Dam Creek Gas Plant operated by Wittier Energy company (Whittier). This facility was purchased by Whittier from Cabot Oil and Gas Corporation on 02/01/02. Cabot bought this facility from Oryx Energy Co in January 1999. The facility is located in a rural section of St. Helena Parish approximately 4.6 miles south of Pine Grove, LA. The lease road, which is maintained by Whittier and is privately owned, is located just before the intersection of Highway 16 and Highway 63 in Watson, LA. Surrounding property is pastureland and timberland used mainly for grazing and occasional recreation hunting. Public access to the area is restricted. The only persons allowed into the area are the land owner and leasee, Whittier personnel, and members of the Hilltop and Mullins Hunting Clubs.

The facility produces crude oil, natural gas, and NGL. Natural gas and well fluids (oil & water) are separated using pressure separation vessels. The gas is routed to a membrane unit where carbon dioxide is removed. The gas is then compressed and routed to a cold separator in which natural gas liquids are produced. The liquids are removed in order to lower the heating value of the natural gas to meet pipeline specifications. The separated NGL mixture is stored in a 700 BBL pressurized tank until transported by tank truck for sales. The natural gas is sold by pipeline and the oil and water are stored in on-site atmospheric storage tanks until hauled by tank truck.

The 700 BBL NGL storage tank is equipped with a relief valve which vents to atmosphere and automatically operates according to preset pressure specifications. Manual shut-off valves are located at the cold separator effluent line and the inlet to the storage tank.

The threshold quantity for all flammable substances under 40 CFR part 68 is 10,000 lbs. It is the facility's policy not to store more than 8800 gal (or one truck load) of NGL at any one time thus limiting the invento
ry to a maximum of 37,195 lbs. The NGL contains a mixture of propane, butane, and pentane which are all regulated substances. The threshold determination is based on the properties of propane since it is the predominant flammable component in the mixture with the highest heat of combustion.
The worst-case release scenario is a tank failure due to a 1 psi overpressure resulting in a vapor cloud explosion. The scenario is based on the facility's administrative control to limit the maximum amount of NGL stored to 37,195 lbs. (8800 gal) and assumes failure of all safety devices. The distance to the endpoint for this type of release is 0.30 mile. According to USGS maps there are no public or environmental receptors within a 0.30 mile radius of the facility. The closest receptor is a private hunting camp located 0.32 mile south of the facility. The residential population within the worst-case circle is estimated to be zero. The worst case release area was determined using EPA's RMP*Comp software.

An alternative scenario is not required for this facility.

The facility has not experienced a release which caused on or off site injury, death or property damage within the past five years.
Whittier has developed a facility emergency response plan & procedures for the Beaver Dam Creek Gas Plant. This plan is located on-site. The facility is also listed with the Greensburg Fire Department and the St. Helena Parish LEPC.

In general the emergency response plan, in the event of an accidental release, provides procedures for facility operators to locate the problem and close the necessary flow valves to and from the storage tanks or to shut-in the entire facility. Should a fire or explosion occur facility operators would contact the local fire department or other specially trained organizations and work with
them to respond to the release. As an additional safety measure Whittier plans to further restrict public access to the facility by locking the "no traspassing" gate located mid-way down the lease road.