[Read a summary of the overall Minnesota permit, stormwater monitoring, and sector requirements]
Caltha LLP will be conducted seminars on the proposed sector requirements in July & August 2009. Caltha MPCA Industrial Stormwater Permit Requirements Seminars
The proposed permit details requirements for 29 different industrial sectors. The requirements described below are proposed for the Land Transportation and Warehousing Sector (Sector P). Sector P includes Land Transportation and Warehousing facilities as identified by the Standard Industrial Codes in Major Groups 40, 41, 42, 43 and SIC 5171. These requirements are in addition to permit requirements that apply to all sectors.
The facility must inspect all the following areas/activities: storage areas for vehicles/equipment awaiting maintenance, fueling areas, indoor and outdoor vehicle/equipment maintenance areas, and vehicle/equipment cleaning areas.
The facility must conduct two of the monthly inspections during runoff events. One of the inspections shall be performed during a snow melt runoff event. Each inspection must 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.
The employee training program must include proper disposal of used oil and spent solvent management; fueling procedures; proper painting procedures; and used battery management..
[Read more about Minnesota stormwater training]
Stormwater Monitoring Benchmarks:
All facilities are required to conduct visual and chemical (benchmark) monitoring. For benchmark monitoring, the benchmark concentrations or values depend on facility type:
Rail Transportation Facilities (SIC 4011, 4013):
TSS 100 mg/L
Petroleum Bulk Oil Stations and Terminals (SIC 5171):
TSS 100 mg/L
United States Postal Service Facilities (SIC 4311); Motor freight Transportation Facilities; (SIC 4212-4231); Passenger Transportation Facilities (SIC 4111-4173):
TSS 100 mg/L
[Read more about how benchmarks are used under the proposed MPCA industrial permit]
[Read more about what a 100 mg/L benchmark for TSS relates to]
Looking for other sector information? Click here for a link to all sector requirements
Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training.
For further information contact Caltha LLP at
Caltha LLP Website