P. Land Transportation and Warehousing

1. Authorized Stormwater Discharges

The requirements in Sector P apply to stormwater discharges associated with industrial activity from land transportation and warehousing facilities as identified by the industrial activity codes in Major Groups 40, 41, 42, 43 and SIC 5171, and specified in Table 5 of Appendix D.

2. Industrial Activities Authorized by Sector P Permittees under Sector P are primarily engaged in the following types of activities:

a. Vehicle and equipment fluid changes.

b. Mechanical repairs.

c. Parts cleaning.

d. Sanding, refinishing and painting.

e. Fueling and lubrication.

f. Locomotive sanding (loading sand for traction).

g. Storage of vehicles and equipment awaiting repair or maintenance.

h. Storage of materials and waste materials, such as oil, fuel, batteries, tires, or oil filters.

i. Equipment cleaning operations.

j. Farm product warehousing and storage.

k. Refrigerated warehousing and storage.

l. General warehousing and storage.

3. Limitation on Authorization

a. Only those portions of a land transportation facility that are involved in vehicle maintenance (including vehicle rehabilitation, mechanical repairs, painting, fueling, and lubrication), equipment cleaning operations, or deicing operations are regulated as industrial activity under this permit. If other portions of the facility include industrial activities that are described at 40 CFR 122.26(b)(14)(i-ix and xi), those industrial activities are also regulated under this permit, and the appropriate sector requirements for such activities apply.

b. The limitation in 3.a. above does not apply to warehousing and storage. All portions of a facility conducting warehousing and storage operations are regulated under this permit, as long as the industrial activity is described in 40 CFR 122.26(b)(14)(xi) regarding SIC codes 4221-4225 for warehousing and storage.

c. This permit does not authorize the discharge of vehicle/equipment/surface washwater, including tank cleaning operations. Such discharges must be authorized under a separate NPDES/SDS permit, discharged to a sanitary sewer in accordance with applicable industrial pretreatment requirements, or recycled on site.

4. Sector-Specific Definitions (No Additional Definitions)

5. Stormwater Controls

a. Employee Training.

When conducting employee training, the Permittee shall include:

1. Proper management and disposal of used oil and spent solvent management.

2. Fueling procedures.

3. Proper painting procedures.

4. Used battery management.

b. Erosion and Sedimentation Controls (No additional requirements).

c. Good Housekeeping.

The Permittee shall minimize or prevent stormwater from contacting locomotive sanding (loading sand for traction) areas. Sediment removal practices shall be implemented to minimize the offsite transport of sanding material.

d. Inspections.

1. The Permittee shall inspect the following areas/activities:

a. Storage areas for vehicles/equipment awaiting maintenance.

b. Fueling areas.

c. Indoor and outdoor vehicle/equipment maintenance areas.

d. Vehicle/equipment cleaning areas.

2. In addition to the inspection requirements outlined in Part III.G, the Permittee shall ensure that a total of two (2) of the required monthly inspections occur during runoff events, with at least one being performed during snow melt. Each inspection shall include a visual assessment of the runoff to identify any visible sheens or films that indicate the presence of oil or grease in the discharge. If sheens are present in stormwater discharges, corrective actions to prevent sheen shall be implemented and documented in the SWPPP.

The Permittee is only required to conduct visual inspections of runoff originating from, or passing through, areas of industrial activity and/or significant materials. Any runoff that does not contact industrial activity and/or significant materials (e.g. office buildings, employee parking lots, natural areas, etc) is not required to be inspected.

e. Preventive Maintenance.

The Permittee shall maintain all material storage vessels (e.g. used oil/oil filters, spent solvents, paint wastes, hydraulic fluids) to prevent contamination of stormwater, and plainly label the storage vessels.

f. Spills and Leaks.

The Permittee shall confine the storage of leaky or leak prone vehicles/equipment awaiting maintenance to designated areas.

g. Other Industry Specific Stormwater Controls.

All petroleum bulk oil stations and terminals shall comply with applicable State and Federal laws regulating large bulk fuel storage tanks, including the SPCC and provisions for secondary containment. Above ground storage tanks with a capacity larger than 1.0 million gallons are regulated by permits negotiated with the Agency. Follow all rules and requirements pursuant to Minn. R. 7151.1200 concerning above ground storage tanks, and Minn. R. 7150 regarding underground storage tanks.

6. SWPPP Requirements

In addition to the requirements of Part IV, the Permittee shall also comply with the following:

a. Facility Map.

The Permittee shall identify the following areas of the facility and indicate whether activities occurring there may be exposed to stormwater:

1. Fueling stations.

2. Vehicle/equipment maintenance or cleaning areas.

3. Storage areas for vehicle/equipment with actual or potential fluid leaks.

b. Inventory of Exposed Materials (No additional requirements).

c. Potential Pollutant Sources.

The Permittee shall describe and assess the potential for the following facility activities and areas to contribute pollutants to stormwater discharges:

1. On-site waste storage or disposal.

2. Dirt/gravel parking areas for vehicles awaiting maintenance.

3. Fueling areas.

d. Description of Stormwater Controls (No additional requirements).

7. Monitoring and Reporting Requirements

In accordance with the monitoring requirements of Part V, the Permittee shall monitor the applicable parameters in Table P-1, below:

Sector-Specific Benchmark Values and Effluent Limitations: Sector - P. Discharges may be subject to requirements for more than one sector or subsector.
Link to this table

Subsectors Parameter Benchmark Values
P1 - Rail Transportation Facilities Solids, Total Suspended (TSS) 100 mg/L 1
P2 - Petroleum Bulk Oil Stations and Terminals Solids, Total Suspended (TSS) 100 mg/L 1
P3 - Motor Vehicle Facilities Solids, Total Suspended (TSS) 100 mg/L 1
P4 2 - Warehousing and Storage: General Warehousing, Farm Product Warehousing, Refrigerated Warehousing Solids, Total Suspended (TSS) 100 mg/L 1

1If the Permittee is required to comply with Appendix A, part F.1, the benchmark value for Solids, Total Suspended (TSS) is 65 mg/L, instead of 100 mg/L.
2SIC codes 4221-4225 are not limited by vehicle/equipment maintenance


8. Use of Infiltration Devices and/or Industrial Stormwater Ponds for Stormwater Treatment and Disposal

Sector P industrial facilities are authorized to use designed infiltration devices or industrial stormwater ponds for stormwater management.

This page was last edited on 30 April 2015, at 18:38.

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