**SPILL PREVENTION, CONTROL, AND COUNTERMEASURES PLAN**

**NATIONAL WEATHER SERVICE**

**Weather Forecast Office and Radar Data Acquisition Site**

**Duluth, Minnesota**

**Original Date of Plan: September 20, 2000**

**Date of Last Plan Review: September 20, 2000**

**Date of Last Amendment\
and P.E. Certification: September 20, 2000**

**[Designated Person Responsible for Spill Prevention:]{.underline}**

**Steve Wannebo, Environmental/Safety Focal Point**

**Telephone: (218) 729-0651**

**CERTIFICATION**

I hereby certify that I have examined the facility, and being familiar
with the provisions of Title 40 of the Code of Federal Regulations (40
CFR) Part 112, I attest that this Spill Prevention, Control, and
Countermeasures (SPCC) plan has been prepared in accordance with good
engineering practices.

Timothy E. Denhof

  ----------------------------------------------- -----------------------
  Printed Name of Registered Engineer             

                                                  

  Signature of Registered Engineer and Date       

                                                  

  Registration No. **[062-047884PE]{.underline}** State
                                                  **[IL]{.underline}**
  ----------------------------------------------- -----------------------

**REVIEW DOCUMENTATION AND MANAGEMENT APPROVAL PAGE**

**REVIEW DOCUMENTATION**

In accordance with 40 CFR Part 112.5(b), a review and evaluation of this
SPCC plan is conducted at least once every 3 years. As a result of this
review and evaluation, the National Weather Service will amend the SPCC
plan within 6 months of the review to include more effective prevention
and control technology if the following both apply:

-   Such technology will significantly reduce the likelihood of a spill
    event from the facility.

-   Such technology has been field-proven at the time of review.

Any amendment to the SPCC plan shall be certified by a Professional
Engineer within 6 months after a change in the facility design,
construction, operation, or maintenance occurs which materially affects
the facility's potential for the discharge of oil into or upon the
navigable waters of the United States or adjoining shorelines.

  -------------- ------------------------------------ --------------------
  **Review       **Signature of Responsible Manager** **Amended (Yes or
  Date**                                              No)? ^a^**

                                                      

                                                      

                                                      
  -------------- ------------------------------------ --------------------

a Amendment necessary and certified by a Registered Professional
Engineer per 40 CFR Part 112.3(d)

**MANAGEMENT APPROVAL**

The National Weather Service is committed to the prevention of
discharges of oil to navigable waters and the environment. We maintain
the highest standards for SPCC through regular review, updating, and
implementation of this SPCC plan for the Weather Forecasting Center and
Radar Data Acquisition Site located in Duluth, Minnesota.

  -----------------------------------------------------------------------
  **Michael Stewart, Meteorologist-In-Charge**

  Printed Name and Title of Responsible Manager

  Signature and Date
  -----------------------------------------------------------------------

**CONTENTS**

**[Section]{.underline}** **[Page]{.underline}**

Certification i

Review Documentation and Management Approval ii

[PART I - GENERAL INFORMATION 1](#__RefHeading___Toc490892269)

[A. GENERAL 1](#__RefHeading___Toc490892270)

[1. Name 1](#__RefHeading___Toc490892271)

[2. Type 1](#__RefHeading___Toc490892272)

[3. Date of Initial Operation 1](#__RefHeading___Toc490892273)

[4. Location 1](#__RefHeading___Toc490892274)

[5. Name and Address of Operator 1](#__RefHeading___Toc490892275)

[6. Facility Contacts: 1](#__RefHeading___Toc490892276)

[B. SITE DESCRIPTION AND OPERATIONS 1](#__RefHeading___Toc490892277)

[1. Facility Location, Layout, and Operations
1](#__RefHeading___Toc490892278)

[2. Facility Storage 2](#__RefHeading___Toc490892279)

[3. Drainage Pathway and Distance to Navigable Waters
2](#__RefHeading___Toc490892280)

[4. Spill History 2](#__RefHeading___Toc490892281)

[5. Spill Potential, Volumes, and Rates 3](#__RefHeading___Toc490892282)

[PART II - DESIGN COMPONENTS AND OPERATIONAL PROCEDURES FOR SPILL
PREVENTION AND CONTROL 4](#__RefHeading___Toc490892283)

[A. SPILL PREVENTION 4](#__RefHeading___Toc490892284)

[1. Bulk Storage Tanks and Facility Transfer Operations
4](#__RefHeading___Toc490892285)

[2. Tank Truck Unloading Operations 4](#__RefHeading___Toc490892286)

[3. Inspections and Records 5](#__RefHeading___Toc490892287)

[4. Site Security 5](#__RefHeading___Toc490892288)

[5. Training 6](#__RefHeading___Toc490892289)

[B. SPILL CONTROL 6](#__RefHeading___Toc490892290)

[1. Secondary Containment Designs, Construction Material, and Volume
6](#__RefHeading___Toc490892291)

[2. Spill Kits Type and Location 6](#__RefHeading___Toc490892292)

[PART III - SPILL COUNTERMEASURES AND REPORTING
7](#__RefHeading___Toc490892293)

[A. SPILL COUNTERMEASURES 7](#__RefHeading___Toc490892294)

[B. SPILL REPORTING 7](#__RefHeading___Toc490892295)

[1. General Notification Procedures For All Spills
7](#__RefHeading___Toc490892296)

[2. Federal Notifications 8](#__RefHeading___Toc490892297)

[3. State Notification 8](#__RefHeading___Toc490892298)

[4. Cleanup Contractor Notification 9](#__RefHeading___Toc490892299)

[PART IV - RECOMMENDED IMPROVEMENTS 10](#__RefHeading___Toc490892300)

[A. PHYSICAL UPGRADES 10](#__RefHeading___Toc490892301)

[1. Tanks 10](#__RefHeading___Toc490892302)

[2. Spill Kits 10](#__RefHeading___Toc490892303)

[3. Containment, Tank Truck Unloading 10](#__RefHeading___Toc490892304)

**CONTENTS (Continued)**

**[Section]{.underline}** **[Page]{.underline}**

[B. PROCEDURAL CHANGES 11](#__RefHeading___Toc490892305)

[1. Tank Truck Unloading Procedure 11](#__RefHeading___Toc490892306)

[2. Inspections and Preventative Maintenance
11](#__RefHeading___Toc490892307)

[3. Record keeping 11](#__RefHeading___Toc490892308)

[4. Training 11](#__RefHeading___Toc490892309)

**[Appendix]{.underline}**

A Tank Ullage/Fueling Log ANd FUeL UNLOADING PROCEDURE CHECKLIST

B Inspection ChecklistS

C Training Outline and Title 40 OF THE CODE OF FEDERAL REGULATIONS,
Section 112.1-112.20-OIL POLLUTION PREVENTION

D Spill RepoRtING form

E CROSS REFERENCE OF THE REQUIREMENTS of TITLE 40 OF THE CODE OF FEDERAL
REGULATIONS, Section 112.7, WITH THIS PLAN

**FIGURES**

**[Figure]{.underline} [Page]{.underline}**

1 SITE LOCATION 12

2 SITE LAYOUT 13

**TABLES**

**[Table]{.underline} [Page]{.underline}**

1 DESCRIPTIVE INVENTORY OF FACILITY STORAGE 14

2 POTENTIAL SPILL SOURCES AND VOLUMES 15

[]{#__RefHeading___Toc490892269 .anchor}PART I - GENERAL INFORMATION

This part of the Spill Prevention, Control, and Countermeasures (SPCC)
plan presents general information about the facility including a
description of the site and its operations.

A.  []{#__RefHeading___Toc490892270 .anchor}GENERAL

This section provides general information about the facility.

1.  []{#__RefHeading___Toc490892271 .anchor}Name

National Weather Service (NWS), Weather Forecast Office (WFO) and Radar
Data Acquisition (RDA) Site

2.  []{#__RefHeading___Toc490892272 .anchor}Type

This facility is an onshore facility (non-production) that operates as a
weather forecasting center and houses a RADAR dome for collecting
atmospheric information. The facility is staffed 24 hours per day,
365 days per year.

3.  []{#__RefHeading___Toc490892273 .anchor}Date of Initial Operation

April 1995

4.  []{#__RefHeading___Toc490892274 .anchor}Location

5027 Miller Trunk Highway Latitude: 46 ^º^ 50^\'^ 12^\"^ North

Duluth, St. Louis County, MN 55811-1203 Longitude: 92^º^ 13^\'^ 13^\"^
West

5.  []{#__RefHeading___Toc490892275 .anchor}Name and Address of Operator

> National Weather Service
>
> Central Region Headquarters
>
> 601 East 12th Street, Room 1836
>
> Kansas City, MO 64106-2897

6.  []{#__RefHeading___Toc490892276 .anchor}Facility Contacts:

> [Name]{.underline} [Title]{.underline} [Telephone Number]{.underline}
>
> Steve Wannebo Environmental Safety Focal Point (218) 729-6572
>
> Michael Stewart Meteorologist-In-Charge (218) 729-0651
>
> (24 hours a day)

A.  []{#__RefHeading___Toc490892277 .anchor}SITE DESCRIPTION AND
    OPERATIONS

This section describes the site and its operations.

1.  []{#__RefHeading___Toc490892278 .anchor}Facility Location, Layout,
    and Operations

The facility is located in St Louis County, Minnesota, approximately
7 miles northwest of downtown Duluth, Minnesota (Figure 1). Figure 2
shows the layout of the facility including the 1,000‑gallon aboveground
storage tank (AST) and 50-gallon day-tank at the WFO, and the two
250-gallon ASTs for the RDA site. All the ASTs are used to store number
1 diesel fuel for generators that are used for emergency back‑up power
to the WFO and RDA site. The 50-gallon day-tank and the two 250‑gallon
ASTs are stored inside prefabricated sheds for the respective generators
for the WFO and RDA site.

The RDA site is located approximately 250 feet east of the WFO and is in
a secured (fenced and locked) area approximately 65 feet by 85 feet
square. This site is comprised of the radar tower, the data acquisition
center (DAC), the uninterruptible power supply (UPS), and the emergency
back-up power generator. The generator and the two 250‑gallon ASTs are
located in an enclosed generator shed.

Fuel usage for the weather station is estimated at 250 gallons per year
based on fuel records. Fuel usage for the RDA is estimated at
500 gallons per year based on fuel records. Both the WFO and RDA
generators are tested once a week. Fuel consumption would increase based
on the frequency and duration of any power outages.

7.  []{#__RefHeading___Toc490892279 .anchor}Facility Storage

The WFO storage tank is a 1,000 gallon, LubeCube^®^ AST, rectangular in
shape. The primary steel tank is encased in a secondary tank with a
capacity of 110 percent of the primary storage tank. The tank has a
primary and secondary venting system as well as a primary and secondary
emergency venting system.

The supply line from the WFO storage tank to the generator is
painted-cast iron piping, which is encased in plastic containment
piping. The piping travels overhead to the generator building. The fuel
is transported into the 50-gallon day-tank that directly feeds the
generator.

The two 250-gallon single-wall storage tanks at the RDA site are
rectangular in shape and inside the generator building. They are
connected to each other in two places via a 2-inch rubber line. Each
tank has a vent pipe out the top that merges together into one pipe that
is vented out the side of the generator building. The generator building
is 9 ½ feet wide and 15 ½ feet long and has a 9-inch-high lip on the
door. This building is designed to act as containment for the fuel
storage tanks. Excluding displacement from the equipment, there is
approximately 825 gallons of capacity within the sealed concrete floor
of the building for secondary containment. The north tank is connected
to the pump that brings fuel to the generator. The north tank also has a
fill line and has a low-level sensor connected to an alarm that is
remotely monitored at the WFO.

Table 1 summarizes the pertinent information on the tanks at the
facility.

8.  []{#__RefHeading___Toc490892280 .anchor}Drainage Pathway and
    Distance to Navigable Waters

The area is not supplied with a storm water sewer system. A storm
drainage system specific to the property, located in the recessed grass
basins, collects storm water runoff from the east side of the building.
The flow from the two basins is directed north to an outlet located
approximately 20 feet down the hill on the north side of the facility
property. This outfall flows downhill to neighboring property owned by
Duluth International Airport. The runoff collects in a swamp located
near the bottom of the hill or could potentially be transported far
enough onto airport property to reach the drainage system for the
airport. Stormwater runoff from the airport is collected in a manmade
drainage ditch, which travels approximately 1 mile southeast to an
unnamed ditch. This ditch travels another 1 mile before connecting to
Miller Creek which discharges to St. Louis Bay in Duluth and then
discharges to Lake Superior.

9.  []{#__RefHeading___Toc490892281 .anchor}Spill History

[Reportable Spill events from April 1995 to date on cover of this
plan:]{.underline}

None

10. []{#__RefHeading___Toc490892282 .anchor}Spill Potential, Volumes,
    and Rates

The most probable causes for spills from the storage tanks are from
overfilling, pump failures, or a ruptured hose during fueling. For these
tanks, spills caused by failure of the fuel supply line, loss of
structural integrity, vehicle collisions, or earthquakes are low
probability events.

Table 2 summarizes the potential type of failure, potential spill
volume, estimated rate, and direction of spill flow from the tanks.

[]{#__RefHeading___Toc490892283 .anchor}PART II - DESIGN COMPONENTS AND
OPERATIONAL PROCEDURES\
FOR SPILL PREVENTION AND CONTROL

This section discusses spill prevention and control measures that shall
be implemented at the facility.

A.  []{#__RefHeading___Toc490892284 .anchor}SPILL PREVENTION

This section describes design components and operating procedures that
shall be implemented at the facility to prevent oil spills.

1.  []{#__RefHeading___Toc490892285 .anchor}Bulk Storage Tanks and
    Facility Transfer Operations

[WFO Storage Tank:]{.underline} The tank construction shall be
compatible with the no. 1 diesel fuel held by the tank. The tank shall
have secondary containment around the primary tank shell. A float-type
level gauge shall indicate the fuel level (from empty to full).

An automatic shut-off valve on the fill spout shall be set to close at
90 percent of the tanks capacity (900 gallons). The tank also shall have
an audible high-level alarm set at 85 percent of capacity (850 gallons)
and interstitial monitoring device between the primary and secondary
tanks that is connected to the audible alarm system. A 7‑gallon-capacity
round spill container shall surround the fill spout.

[WFO Generator Day Tank:]{.underline} This tank shall be compatible with
the no. 1 diesel fuel and have an open top spill containment pan with a
capacity of not less than 50 gallons.

[RDA Storage Tanks:]{.underline} The tank construction shall be
compatible with the no. 1 diesel fuel held by the tank. The generator
building shall be designed to be leak tight for spill containment. The
tank shall be equipped with an audible high level alarm integrated with
the current low-level sensor.

[Piping:]{.underline} An antisiphoning valve shall be located between
the main storage tanks and the pump to prevent unwanted fuel from being
siphoned from the storage tanks. WFO piping shall be double-walled from
the tank to the generator building.

11. []{#__RefHeading___Toc490892286 .anchor}Tank Truck Unloading
    Operations

All delivery drivers shall have U.S. Department of Transportation
hazardous material transportation training as required by Federal law.

The remainder of this section discusses the procedures that shall be
used during unloading of fuel from the tank truck into the storage tank
to prevent spills. This procedure shall be documented every time
refueling occurs using the form found in Appendix A. Copies of this form
shall be kept for 3 years.

The following procedure shall be used [before]{.underline} fuel
unloading:

-   Ensure that the audible high-level alarm system and the automatic
    shutoff valve function properly.

-   A NWS representative should determine the available capacity
    (ullage) of the tank by converting the reading on the fuel gauge to
    gallons (See Appendix A). This ullage is communicated to the fuel
    supply contractor and marked in the fueling log.

-   Move spill containment equipment such as booms or spill barriers
    into the unloading area.

-   Block the tank truck wheels.

-   Place drip pans under all pump hose fittings (if applicable) before
    unloading.

-   The NWS representative and the delivery driver ensure the fill
    nozzle is placed in the appropriate AST appurtenance. In the case of
    the 1,000 gallon AST, the fill nozzle shall be connected to the
    cam-lock fitting on the 4-inch pipe within the round spill
    container. In the case of the two 250-gallon ASTs, the fill nozzle
    shall be placed into the fill spout marked "fill line" that extends
    outside of the east wall and shall be equipped with an automatic
    shutoff valve.

Both the NWS representative and the delivery driver shall remain with
the vehicle observing the unloading process at all times. Gauges on the
AST and the truck shall be continuously monitored to ensure the ullage
is not exceeded. If the audible high-level alarm sounds, the unloading
of fuel shall be stopped as soon as possible.

The following procedure shall be used after fuel unloading is completed:

-   Record the amount of fuel transferred to the WFO and RDA ASTs in the
    log (Appendix A).

-   Drain the fill hose and then ensure that all drain valves are closed
    (if applicable) before removal of the hose from the tank

-   Pour any fuel in the drip pans, or spill container on the fill pipe
    into the AST (if it has the capacity) or dispose of appropriately.

-   Inspect the tank truck prior to removing the blocks to ensure the
    lines have been disconnected from the tank.

-   Remove the blocks from truck wheels.

-   Place a copy of the fuel-unloading checklist in the SPCC plan.

12. []{#__RefHeading___Toc490892287 .anchor}Inspections and Records

[Inspection and Maintenance of Tanks]{.underline}: The 1,000 gallon
storage tank, WFO generator day tank, and the two 250-gallon storage
tanks for the RDA shall be inspected weekly for any oil outside the
tanks, especially at seams. The outside of exposed piping shall also be
inspected weekly, especially at the joints such as gasketed fittings.
Monthly and annual inspections shall follow the checklists shown in
Appendix B. These inspections can be performed in conjunction with the
weekly generator testing.

> [Record Keeping]{.underline}: The Environmental/Safety Focal Point
> (person responsible for spill prevention at the facility) shall be
> responsible for completing the ullage logs and documentation of fuel
> unloading procedures. In the absence of the above Focal Point, an
> appropriate substitute shall record the information. These records, as
> well as records of all inspections, shall be maintained for at least 3
> years from the time of inspection.

13. []{#__RefHeading___Toc490892288 .anchor}Site Security

The WFO storage tank shall have appropriate lighting to detect spills at
night. Due to the rural location of the site and the lack of readily
accessible valves, fencing for security purposes is not warranted around
this tank. The fill cap shall be securely locked at all times except
during refueling. Appropriate signage indicating the tank contents,
presence of combustibles and no smoking warnings must be maintained and
clearly visible. A fire extinguisher shall be located in the adjacent
generator building.

The two 250 gallon ASTs for the RDA are located inside a locked building
surrounded by a locked security fence.

14. []{#__RefHeading___Toc490892289 .anchor}Training

The Environmental/Safety Focal Point and an alternate shall be trained
in the intent of applicable oil spill regulations and how to implement
the inspection and maintenance procedures outlined in paragraph 3,
above. Spill control and countermeasures shall also be included in the
training. An outline for the training is found in Appendix C.

Training shall be repeated once per year. All new personnel responsible
for implementing this SPCC plan shall be properly trained before
beginning the new position. A record of who was trained, when, and by
whom, shall be filed with this SPCC plan and kept for a period of 3
years.

B.  []{#__RefHeading___Toc490892290 .anchor}SPILL CONTROL

This section describes control measures that shall be implemented to
prevent any spilled oil from entering navigable waters or adjoining
shorelines.

1.  []{#__RefHeading___Toc490892291 .anchor}Secondary Containment
    Designs, Construction Material, and Volume

The secondary containment tank on the WFO storage tank and the sealed
floor in the generator building beneath the two RDA storage tanks shall
be sized to contain 110 percent of the tank volumes. Both of these
secondary containment features are enclosed to prevent precipitation
from entering. An interstitial monitoring system that can detect fuel of
1 inch or more in the secondary shell of the WFO storage tank shall be
included.

15. []{#__RefHeading___Toc490892292 .anchor}Spill Kits Type and Location

The facility shall have spill kits designed to absorb diesel fuel and to
divert a spill from navigable waters. These items shall be stored in
each generator building or nearby. The kit shall include oil absorbent
socks and mats in a polyethylene container that doubles as a disposal
container. In addition, urethane spill barriers that can divert or
contain a relatively small spill and prevent it from reaching navigable
waters should be included with the spill kit.

[]{#__RefHeading___Toc490892293 .anchor}part iii - SPILL COUNTERMEASURES
AND REPORTING

The primary emphasis of this SPCC plan is on prevention. The spill
countermeasures presented do [not]{.underline} constitute a contingency
plan detailed in Title 40 of the Code of Federal Regulations (40 CFR)
Part 109, nor is one required. Such a plan is only required under 40 CFR
112.7(d) if it is impracticable to provide containment, diversionary
structures, or equipment to prevent the discharge of oil to navigable
waters. In addition, this facility is not required to have a facility
response plan under 40 CFR 112.20 since it does [not]{.underline}:

-   Transfer oil over water from vessels and have a total oil storage
    capacity of greater than or equal to 42,000 gallons, or

-   Have a total storage capacity over 1 million gallons.

Should a spill occur, the following measures would be implemented:

A.  []{#__RefHeading___Toc490892294 .anchor}SPILL COUNTERMEASURES

This section presents countermeasures to contain, clean up, and mitigate
the effects of an oil spill that impacts navigable waters or adjacent
shorelines.

A spill containment and cleanup activity will never take precedence over
the safety of personnel. No countermeasure activities will be undertaken
until conditions are safe for workers. The following general procedures
should be implemented as countermeasures:

1.  Account for all personnel and ensure their safety.

2.  Eliminate all ignition sources in the immediate area.

3.  Attempt to divert flow away from the drainage ditch with a spill
    barrier or the contents of spill kit.

4.  Attempt to seal or somehow stop leak, if it can be done safely.

5.  Notify contacts and emergency response contractor as described in
    the next section for assistance in control and cleanup.

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B.  []{#__RefHeading___Toc490892295 .anchor}SPILL REPORTING

This section discusses the reporting procedures for spills of diesel
fuel at the facility. The people and organizations that are notified
vary based on the quantity of the spill, whether it reaches navigable
waters or adjoining shorelines, and the frequency of spills.

A spill report form that requests the information to be reported to all
agencies in written form (to the extent known) is included in Appendix
D. Copies of the completed form should be sent to the NWS Environmental
Compliance Officer and the National Oceanic and Atmospheric
Administration (NOAA) Central Regional Compliance Officer (see next
section).

1.  []{#__RefHeading___Toc490892296 .anchor}General Notification
    Procedures For All Spills

The responsible person or designee is directly charged with reporting
**[all]{.underline}** oil spills that result from facility operations as
follows:

-   First, call **9-1-1** (or the local emergency agency) if there is an
    immediate emergency

-   Next, notify the appropriate persons within the NWS:

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-   **Mike Jacob, (301) 713-1838 Ext. 165, NWS Environmental Compliance
    Officer**.

-   **Olga Kebis, (301) 713-1838 Ext. 173, NWS Safety Officer**

-   **Steve Becka, (816) 426-3226 Ext. 473, NWS Central Regional
    Environmental/Safety Coordinator**

-   **Sherilyn Villegas, (816) 426-3925 Ext. 263, NOAA Central Regional
    Compliance Officer**

16. []{#__RefHeading___Toc490892297 .anchor}Federal Notifications

The Federal Clean Water Act as described in Title 40 CFR Part 110.6,
requires notifying the U.S. Environmental Protection Agency's (EPA)
National Response Center (or the U.S. Coast Guard \[USCG\]) as soon as
anyone has knowledge of any discharges of oil in quantities that "may be
harmful." Title 40 CFR Part 110.3 defines "may be harmful" as a
discharge that:

-   Violates applicable water quality standards; or

-   Causes a film or sheen upon or discoloration of the surface of the
    water or adjoining shorelines or cause a sludge or emulsion to be
    deposited beneath the surface of the water or upon adjoining
    shorelines

If either of these criteria are met contact:

-   **The National Response Center (EPA and USCG): (800) 424-8802.**

Under the SPCC regulations, spill information listed in Title 40 CFR
Part 112.4(a) must be reported to the regional EPA office within 60 days
if [either]{.underline} of the following occurs:

-   A discharge of more than 1,000 gallons of oil into or upon navigable
    waters or adjoining shore lines in a single event

-   Two spill events that cause visible sheens upon navigable waters or
    adjoining shore lines within any 12-month period

Diesel fuel is not listed as a hazardous substance under the
Comprehensive Environmental Response, Compensation, and Liability Act
(CERCLA). Therefore no other notification to the EPA is required for
discharges of diesel fuel other than those listed above.

17. []{#__RefHeading___Toc490892298 .anchor}State Notification

Under Minnesota Pollution Control Agency regulations for aboveground
storage tanks, Minnesota Rules Chapter 7151, above ground storage tanks
that have a capacity of less than 1,100 gallons and are more than 500
feet from class 2 waterways are exempt from this rule. However,
Minnesota Statute 115.061, Duty to Notify and Report Water Pollution
does require reporting of all spills, if not recovered, that may cause
pollution of the waters of the state. MPCA interprets this to apply to a
5-gallon release or larger and including releases to outdoor secondary
containment areas. Any release greater than 5 gallons must be reported
to the MPCA, Department of Public Health and Safety, Minnesota Duty
Officer.

-   MPCA, Department of Public Health & Safety: (800) 422-0798 or (651)
    649-5451.

18. []{#__RefHeading___Toc490892299 .anchor}Cleanup Contractor
    Notification

An emergency response contractor should also be notified to assist with
the clean up, if necessary. NWS has identified the following two
contractors that are available for an emergency response:

-   **EMR Inc. (888) 723-8140**

-   **Service Response Remediation, Inc. (800) 401-0121**

[]{#__RefHeading___Toc490892300 .anchor}PART IV - RECOMMENDED
IMPROVEMENTS

In accordance with Title 40 CFR Section 112.7, this section presents
physical upgrades or procedural changes that are not yet fully
operational but are called for in the plan.

A.  []{#__RefHeading___Toc490892301 .anchor}PHYSICAL UPGRADES

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1.  []{#__RefHeading___Toc490892302 .anchor}Tanks

An automatic overfill shutoff valve should be installed in the fill
spout of the RDA tank. This valve should be set to stop the flow of fuel
into the tank when it reaches 90 percent of capacity. The fuel supply
contractor should be contacted to ensure the valve is compatible with
the nozzle used to fill the tank. A high-level audible alarm should be
installed with the existing computer monitored level sensor on the
storage tank to sound at 85 percent capacity.

The WFO storage tank should be equipped with a high-level sensor and
audible alarm. The sensor should be set to sound the alarm at 85 percent
capacity.

19. []{#__RefHeading___Toc490892303 .anchor}Spill Kits

NWS should purchase adequately sized spill kits and store them near the
tanks. NWS should purchase a kit capable of handling up to 60-gallons.
The kit should include oil absorbent socks and mats in a polyethylene
container that doubles as a disposal container. In addition, the
facility should have urethane spill barriers available. These barriers
can direct or contain a relatively small spill and prevent it from
reaching navigable waters. This requirement is found in Title 40 CFR
Section 112.7(c).

20. []{#__RefHeading___Toc490892304 .anchor}Containment For Tank Truck
    Unloading Areas

> NWS should install containment for tank truck unloading areas for both
> the WFO and RDA storage tanks. Containment is required due to the
> steep grade in the immediate area for fuel transfer. Any spill
> occurring during fuel transfer would quickly travel down grade before
> spill containment devices could be mobilized.
>
> The WFO 1,000 gallon AST unloading area is east of the generator
> building. This area is a flat paved section that is away from all
> traffic and parking areas. A containment dike should be built around
> this area on the north, west, and east sides. The containment dike
> should be sufficient in height and area to contain 110 percent of the
> largest compartment of the fuel delivery vehicle. The vehicle entrance
> to the transfer containment area should be elevated to the same height
> of the surrounding dike and have a sloped drive appropriate for
> delivery vehicle entry and exit. Structural integrity of the entrance
> must be sufficient for the gross weight of a filled delivery vehicle.
> The asphalt containment area should be coated with an appropriate
> chemical resistant liner suitable for diesel fuel Nos. 1 and 2. The
> diked area will require a manually operated drain valve for
> precipitation drainage. The valve is normally closed and locked with a
> combination or paddle lock.
>
> The RDA unloading area is presently located on a gravel access road.
> This area should be paved with asphalt or a concrete containment area
> could constructed. An area sufficient in size to contain 110 percent
> of the largest volume tanker (2,000 gallons based on information
> supplied by Curtis Oil) should be constructed as an unloading area for
> fuel delivery. The area should be diked and drained in a similar
> manner to the WFO location. If the oil supplier has sufficient hose to
> reach both tank locations, a single unloading station could be used.
>
> As an alternate, NWS could require its supplier to provide containment
> on its tank truck during unloading operations. NWS would still be
> responsible for ensuring these containment devices are operated
> properly during unloading.

A.  []{#__RefHeading___Toc490892305 .anchor}PROCEDURAL CHANGES

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1.  []{#__RefHeading___Toc490892306 .anchor}Tank Truck Unloading
    Procedure

The supplier performs the current tank truck unloading. Future
deliveries will require NWS personnel to be present during the unloading
procedure and record the appropriate information on the checklist
provided in Appendix A.

21. []{#__RefHeading___Toc490892307 .anchor}Inspections and Preventative
    Maintenance

The inspection checklists found in Appendix B should be followed. This
requirement is found in Title 40 CFR Section 112.7(e)(8). The
interstitial monitoring device in the storage tank is designed to
monitor the integrity of the primary tank. Visual inspections of the
outside of the secondary wall of the storage tank and the primary wall
of the day tanks should serve to signal a potential problem with their
integrity. However, if a problem is suspected with any tank, tightness
testing should be initiated soon after discovery.

22. []{#__RefHeading___Toc490892308 .anchor}Record keeping

Ullage logs and documentation of fuel unloading procedures should be
completed and maintained for 3 years from the time of inspection.

23. []{#__RefHeading___Toc490892309 .anchor}Training

The Environmental/Safety Focal Point (person responsible for spill
prevention at the facility) and an alternate should be trained in the
intent of the applicable oil spill regulations and how to implement the
inspection and maintenance procedures outlined in the previous section.
Spill control and countermeasures should also be included in the
training. The alternate should be designated in case the primary person
is off-site at the time of a spill. A recommended outline for the
training is found in Appendix C.

Training should be repeated once per year. All new personnel responsible
for implementing the SPCC plan should be properly trained before
beginning the new position. A record of who was trained, when, and by
whom, should be filed with this SPCC plan and kept for a period of 3
years. This requirement is found in Title 40 CFR 112.7(e)(10).

Figure 1 Site Location

Figure 2 Site Layout

**TABLE 1**

**DESCRIPTIVE INVENTORY OF FACILITY STORAGE**

  ---------------------- ---------------- --------------- ---------- -----------
  **Tank**               **Nominal        **Product       **Type**   **Double\
                         Capacity         Stored**                   Walled?**
                         (Gallons)**                                 

  WFO Storage Tank       1,000            Diesel fuel no. AST        Yes
                                          1                          

  WFO Generator Day Tank 50               Diesel fuel no. AST        Yes^a^
                                          1                          

  RDA Generator Day      2 x 250          Diesel fuel no. AST        No^b^
  Tanks                                   1                          

  **Total Capacity**     **1,550**                                   
  ---------------------- ---------------- --------------- ---------- -----------

Notes: AST Aboveground storage tank

WFO Weather Forecast Office

a Surrounded by a 190-gallon rupture basin

b Located in generator building with sealed concrete floor that has a
capacity of greater than 500 gallons

**TABLE 2**

**POTENTIAL SPILL SOURCES AND VOLUMES**

  ------------ ------------- ------------- ------------- ------------- ----------------------
  **Source**   **Event**     **Potential   **Estimated   **Direction   **Remarks**
                             Spill Volume  Rate\         of Spill      
                             (gallons)**   (gallons per  Flow**        
                                           minute)**                   

  WFO Storage  Overfilling   \>0 to 40^a^  80^b^         North         None
  tank         or a ruptured                                           
               hose during                                             
               fueling.                                                

               Failure of    \>0 to 1,000  Variable      North         Can be minimized
               fuel supply                 depending on                through routine
               line to pump                type of                     inspections.
                                           failure                     

               Structural    \>0 to 1,000  Variable      North         Low probability event
               failure                     depending on                that both primary and
                                           type of                     secondary tank shells
                                           failure                     would fail.

               Vehicle       \>0 to 1,000  Variable      North         Low probability event.
               collision                   depending on                Tank is located behind
                                           type of                     generator building
                                           failure                     with no access to
                                                                       vehicles.

  WFO          Failure of    \>0 to 1,000  Variable      North         Low probability event
  Generator    pump to shut                depending on                due to piping
  Day Tank     down or                     type of                     double-walled piping
               failure of                  failure                     located overhead and
               line from                                               out of any potential
               pump to day                                             pedestrian traffic.
               tank                                                    

               Failure of    \>0 to 1,000  10^c^         North         Low probability event
               fuel return                                             due to piping
               line                                                    double-walled piping
                                                                       located overhead and
                                                                       out of any potential
                                                                       pedestrian traffic.

               Structural    \>0 to 50     Variable      East          Low probability event.
               failure                     depending on                Would be contained by
                                           type of                     190-gallon rupture
                                           failure                     basin.

  RDA Storage  Overfilling   \>0 to 40^a^  80^b^         North/East    None
  tanks        or a ruptured                                           
               hose during                                             
               fueling ^d^                                             

               Failure of    \>0 to 500    Variable      North/East    Can be minimized
               fuel supply                 depending on                through routine
               line to pump                type of                     inspections; All lines
               ^d^                         failure                     are within secondary
                                                                       containment.

               Failure of    \>0 to 500    10^c^         North/East    Can be minimized
               fuel return                                             through routine
               line^d^                                                 inspections; All lines
                                                                       are within secondary
                                                                       containment.

               Structural    \>0 to 500    Variable      North/East    Low probability event.
               failure                     depending on                Would be contained by
                                           type of                     secondary containment.
                                           failure                     
  ------------ ------------- ------------- ------------- ------------- ----------------------

Notes:

> a Based on a maximum pumping rate of 80 gallons per minute from the
> fill truck and a maximum of 30 seconds to turn off the pump
>
> b Approximate maximum pumping rate of fill truck
>
> c Estimated return line flow rate
>
> d North tank only

**APPENDIX A**

**Tank Ullage/Fueling Log ANd**

**Fuel UNLOADING PROCEDURE CHECKLIST**

**(2 Pages)**

**APPENDIX A-1**

**Tank Ullage anD Fueling Log**

**Tank Capacity gallons**

  ---------- -------------- ----------- -------------- -------------- ------------- ------------------
  **Date**   **Initials**   **Gauge     **Initial      **Available    **Quantity    **Comments**
                            Reading**   Volume of Fuel Capacity or    Added\        
                                        in Tank ^a\    Ullage ^b\     (Gallons)**   
                                        ^(Gallons)**   ^(Gallons)**                 

                                                                                    

                                                                                    

                                                                                    

                                                                                    

                                                                                    

                                                                                    

                                                                                    

                                                                                    

                                                                                    

                                                                                    

                                                                                    

                                                                                    

                                                                                    
  ---------- -------------- ----------- -------------- -------------- ------------- ------------------

Note:

a From gauge reading

b Available capacity (ullage) = tank capacity -- initial volume of fuel
in tank

**APPENDIX A-2**

**FUEL UNLOADING PrOCEDURE CHECKLIST**

**Date: Tank:**

**NWS Representative:** **Supplier**

  ---------------------- ---------- ---- ----------------------------------------------- ----------------
                         **ITEM**        **DESCRIPTION**                                 **COMMENT**

  **The following six                                                                    
  items must be                                                                          
  completed                                                                              
  [before]{.underline}                                                                   
  fuel unloading:**                                                                      

                         1               Ensure the audible high-level alarm system and  
                                         automatic shutoff valve are functioning         
                                         properly.                                       

                         2               Determine the available capacity (ullage) of    
                                         the aboveground storage tank (AST) by           
                                         converting the reading on the fuel gauge to     
                                         gallons (See Appendix A, Page A-1). This ullage 
                                         should then be marked in the fueling log and    
                                         communicated to the tank truck unloading        
                                         contractor.                                     

                         3               Move spill containment equipment such as booms  
                                         or spill barriers into the unloading area.      

                         4               Block the wheels of the tank truck.             

                         5               Place drip pans under all pump hose fittings    
                                         (if applicable) after the hose is hooked up to  
                                         the AST and before unloading.                   

                         6               Ensure the fill nozzle is placed in the         
                                         appropriate AST appurtenance. In this case, the 
                                         fill nozzle is placed in the fill pipe          
                                         connected to the round spill container.         

  **During unloading:**                                                                  

                                    7    Ensure that the NWS representative and the tank 
                                         truck operator remain with the vehicle at all   
                                         times during unloading.                         

                                    8    Monitor the gauges on the AST and the truck     
                                         continuously to ensure the ullage is not        
                                         exceeded. If the audible high-level alarm       
                                         sounds, stop the unloading of fuel as soon as   
                                         possible.                                       

  **The following six                                                                    
  items must be                                                                          
  completed after the                                                                    
  fuel unloading has                                                                     
  been completed:**                                                                      

                                    9    Record the amount of fuel unloaded in the log   
                                         (Appendix A, page A-1).                         

                                    10   Before removing the fill hose from the AST,     
                                         ensure that it is drained and that all drain    
                                         valves are closed (if applicable).              

                                    11   Pour any fuel in the drip pans, tank truck      
                                         containment pool, or spill container on the     
                                         fill pipe into the AST (if it has the capacity) 
                                         or dispose of appropriately (describe how it    
                                         was disposed of, if applicable).                

                                    12   Inspect the tank truck before removing the      
                                         blocks to ensure the lines have been            
                                         disconnected from the AST.                      

                                    13   Remove the blocks from tank truck wheels.       

                                    14   Place a copy of this fuel-unloading checklist   
                                         in the SPCC plan.                               
  ---------------------- ---------- ---- ----------------------------------------------- ----------------

**APPENDIX B**

**INSPECTION CHECKLISTS**

**(3 Pages)**

**APPENDIX B**

**INSPECTIONS FORMS**

  ------------------------ ---------------- --------- -------- ----------------------
  **MONTHLY INSPECTION                                         
  CHECKLIST (Page 1 of                                         
  2)**                                                         

  Date of Inspection:      Tank Name or                        
                           No.:                                

  Date of Last Inspection: Inspected by:                       

                           Signature:                          

  **A. TANKS**                              **YES**   **NO**   **NOTES**

  1\. Are there any oil                                        
  stains on the outside of                                     
  the tank, including the                                      
  underside?                                                   

  2\. Is there any oil on                                      
  the ground, concrete, or                                     
  asphalt around the tank?                                     

  3\. Are there any                                            
  visible cracks or                                            
  indications of corrosion                                     
  on the tank, at                                              
  fittings, joints, or                                         
  seals? (such as paint                                        
  peeling or rust spots)                                       

  4\. Are there any raised                                     
  spots, dents, or cracks                                      
  on the tank?                                                 

  5\. Does it appear that                                      
  the foundation has                                           
  shifted or settled?                                          

  6\. Is the fuel gauge                                        
  working properly?                                            

  7\. Are all vents clear                                      
  so they may properly                                         
  operate?                                                     

  8\. If rainwater is                                          
  present in secondary                                         
  containment area, does                                       
  sufficient volume remain                                     
  for spill control? (*if                                      
  applicable)*                                                 

  **MONTHLY INSPECTION                                         
  CHECKLIST (Page 2 of                                         
  2)**                                                         

  Date of Inspection:      Tank Name or                        
                           No.:                                

  Date of Last Inspection: Inspected by:                       

                           Signature:                          

  **B. PIPING**                             **YES**   **NO**   **NOTES**

  1\. Is there any oil on                                      
  the outside of or under                                      
  any aboveground piping,                                      
  hoses, fittings, or                                          
  valves?                                                      

  2\. Are aboveground                                          
  piping, hoses, fittings,                                     
  or valves in good                                            
  working condition?                                           

  **C.                                                         
  SECURITY/SAFETY/SPILL                                        
  COUNTERMEASURES**                                            

  1\. Are lights working                                       
  properly to detect a                                         
  spill at night?                                              

  2\. Are all locks in the                                     
  "lock" position?                                             

  3\. Are all warning                                          
  signs properly posted                                        
  and readable?                                                

  4\. Are vehicle guard                                        
  posts in place and                                           
  properly secured? (*If                                       
  applicable)*                                                 

  5\. Are spill kits                                           
  easily accessible,                                           
  protected from the                                           
  weather, and complete?                                       

  **Corrective Actions                                         
  Required:**                                                  
  ------------------------ ---------------- --------- -------- ----------------------

  ------------------------ ---------------- --------- -------- ----------------------
  **ANNUAL INSPECTION                                          
  CHECKLIST (Page 1 of                                         
  1)**                                                         

  Date of Inspection:      Tank Name or                        
                           No.:                                

  Date of Last Inspection: Inspected by:                       

                           Signature:                          

                                            **YES**   **NO**   **NOTES**

  **A. MONTHLY CHECKLIST**                                     

  1\. Has monthly                                              
  inspection checklist                                         
  been completed?                                              

  **B. TANKS**                                                 

  1\. Are all alarms and                                       
  automatic shutoff                                            
  devices working                                              
  properly?                                                    

  2\. Is interstitial                                          
  monitor functioning                                          
  properly? (*if                                               
  applicable*)                                                 

  **C**. **OTHER**                                             

  1\.                                                          

  **Corrective Actions                                         
  Required:**                                                  
  ------------------------ ---------------- --------- -------- ----------------------

**APPENDIX C**

**TRAINING OUTLINE AND COPY OF TITLE 40 OF**

**THE CODE OF FEDERAL REGULATIONS**

**Section 112.1-112.20-Oil Pollution Prevention**

**(1 Page)**

**APPENDIX C**

**OUTLINE FOR SPILL PREVENTION, CONTROL, AND COUNTERMEASURE TRAINING**

Training will be provided for facility personnel at the following times:

-   System startup or whenever new equipment is installed

-   Within the first week of employment for new personnel

-   Annually

The training will include complete instruction in the elements of the
facility's Spill Prevention, Control, and Countermeasure plan and will
include the following:

A.  Pollution control laws, rules, and regulations including a summary
    of Title 40 of the Code of Federal Regulations Part 112 \"Oil
    Pollution Prevention\" (see Attachment).

> B. Fuel Storage System
>
> 1\. Purpose and application of the following system elements:

a.  Tanks

b.  Piping

c.  Pumps

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d.  Accessory equipment

e.  Electronic monitors

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2.  Operation, maintenance, and inspection of system elements

> C. Spill Prevention

1.  Potential spill sources

2.  Spill flow direction and impact on navigable waters

3.  Procedures to prevent spills, especially during fuel unloading

    D.  Spill Control

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1.  Secondary containment

2.  Safety valves

3.  Pump and equipment shutoff switches

4.  Use of catch basin inlet covers or other diversionary devices

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E.  Spill Countermeasures

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1.  Location and use of emergency phone numbers

2.  Location and use of fire extinguishers

3.  Location and use of spill cleanup kit

4.  Stopping the leak

**APPENDIX D**

**SPILL REPORTING FORM**

**(1 Page)**

**APPENDIX D**

**SPILL REPORTING FORM**

  ----------------------------------- ------------------- ---------------
  **1. GENERAL**                                          

  Name of Facility: **National        Address: **5027     
  Weather Service Facility**          Miller Trunk        
                                      Highway\            
                                      Duluth, Minnesota   
                                      55811-1203**        

  Completed By:                       Organization:       
                                      **National Weather  
                                      Service**           

  Position:                           Phone: **(218)      
                                      729-0651**          

  **2. SPILL INFORMATION**                                

  Date:                               Time:               

  Location at Facility:               Quantity:           

  Substance Spilled: **Diesel Fuel**  Other:              

  **3. OUTSIDE NOTIFICATIONS:**                           

  **Agencies**                        **Recorder at       **Date and
                                      Outside Agency**    Time**

  Call **9-1-1** (or the local                            
  emergency agency), if there is an                       
  immediate emergency                                     

  **NWS/NOAA:\                                            
  Mike Jacob, (301) 713-1838 Ext.                         
  165\                                                    
  Olga Kebis, (301) 713-1838 Ext.                         
  173\                                                    
  Steve Becka, (816) 426-3226 Ext.                        
  473\                                                    
  Sherilyn Villegas, (816) 426-3925                       
  Ext. 263**                                              

  **EPA National Response Center\                         
  **or **U.S. Coast Guard**: **(800)                      
  424-8802**                                              

  **Minnesota Pollution Control                           
  Agency, Dept. of Public Health &                        
  Safety (800) 422-0798 or                                
  (651) 649‑5451**                                        

  **5. INFORMATION ON SOURCE AND                          
  CAUSE**                                                 

                                                          

  **6. DESCRIPTION OF ENVIRONMENTAL                       
  DAMAGE**                                                

                                                          

  **7. CLEANUP ACTION(S) TAKEN**                          

                                                          

  **8. CORRECTIVE ACTION(S) TO                            
  PREVENT FUTURE SPILLS**                                 

                                                          
  ----------------------------------- ------------------- ---------------

Note: All information must be filled in. If something is unknown, write
"unknown."

Copies must be sent to the NWS/NOAA personnel listed previously.

**APPENDIX E**

**CROSS REFERENCE OF THE REQUIREMENTS of TITLE 40 OF THE CODE OF FEDERAL
REGULATIONS, Section 112.7, WITH THIS DOCUMENT**

**(1 Page)**

**APPENDIX E**

**CROSS REFERENCE OF THE REQUIREMENTS OF 40 CFR 112.7 AND THIS PLAN**

  -------------- -------------------------------------- -------------------
  **CFR          **Item**                               **Plan Location**
  Citation**                                            

  112.7 (a)      Spill History                          Part I.B.4

  112.7 (b)      Potential Spill Prediction, Volumes,   Part I.B.5 and
                 and Rates                              Table 2

  112.7 (c)      Containment and Diversionary           Part I.B.2 and Part
                 Structures                             II.B.2

  112.7 (d)      Secondary Containment Impractability   Not Applicable

  112.7 (e)(1)   Drainage Control                       Part I.B.3

  112.7 (e)(2)   Bulk Storage Tanks and Secondary       
                 Containment.                           

  112.7          Tank compatibility with its contents   Part II.A.1
  (e)(2)(i)                                             

  112.7          Diked area construction and            Not Applicable
  (e)(2)(ii)     containment for storage tanks          

  112.7          Diked area inspection and drainage of  Not Applicable
  (e)(2)(iii)    rainwater                              

  112.7          Corrosion protection of buried         Not Applicable
  (e)(2)(iv)     metallic storage tanks                 

  112.7          Corrosion protection of partially      Not Applicable
  (e)(2)(v)      buried metallic tanks                  

  112.7          Aboveground tank periodic integrity    Part II.A.3
  (e)(2)(vi)     testing                                

  112.7          Control of leakage through internal    Not Applicable
  (e)(2)(vii)    heating coils                          

  112.7          Tank installation fail-safe engineered Part II.A.1, B.1
  (e)(2)(viii)                                          

  112.7          Observation of disposal facilities for Not Applicable
  (e)(2)(ix)     effluent discharge                     

  112.7          Visible oil leak corrections from tank Part II.A.3 and
  (e)(2)(x)      seams and gaskets                      Appendix A
                                                        Inspections

  112.7          Appropriate position of mobile or      Not Applicable
  (e)(2)(xi)     portable tanks                         

  112.7 (e)(3)   Facility Transfer Operations           

  112.7          Buried piping installation protection  Part II.A.1 &
  (e)(3)(i)      and examination                        Appendix A

  112.7          Not in-service and standby terminal    Not Applicable
  (e)(3)(ii)     connections                            

  112.7          Pipe support designs                   Not Applicable
  (e)(3)(iii)                                           

  112.7          Aboveground valve and pipeline         Not Applicable
  (e)(3)(iv)     examination                            

  112.7          Aboveground piping protection from     Not Applicable
  (e)(3)(v)      vehicular traffic                      

  112.7 (e)(4)   Facility Truck Unloading Operations    Part II.A.2

  112.7          Oil Production Facilities (onshore)    Not Applicable
  (e)(5)-(7)     and Oil Drilling, Production, or       
                 Workover Facilities (on shore and      
                 offshore)                              

  112.7 (e)(8)   Inspections And Record Keeping         Part II.A.3

  112.7 (e)(9)   Security                               

  112.7          Fencing                                Part II.A.4
  (e)(9)(i)                                             

  112.7          Flow valves locked                     Not Applicable
  (e)(9)(ii)                                            

  112.7          Starter controls locked                Not Applicable
  (e)(9)(iii)                                           

  112.7          Pipeline loading and unloading         Not Applicable
  (e)(9)(iv)     connections securely capped            

  112.7          Lighting adequate to detect spills     Part II.A.4
  (e)(9)(v)                                             

  112.7 (e)(10)  Training                               

  112.7          Personnel instructions                 Part II.A.5
  (e)(10)(i)                                            

  112.7          Designated person responsible for      Page i
  (e)(10)(ii)    spill prevention                       

  112.7          Spill prevention briefings             Part II.A.5
  (e)(10)(iii)                                          
  -------------- -------------------------------------- -------------------

Note: CFR Code of Federal Regulations