Erosion and Sediment Control Requirements Procedure

“Land-disturbing activity” or “land disturbance” means any disturbance to the ground surface that, through the action of wind or water, may result in soil erosion or the movement of sediment. An Erosion and Sediment Control Plan (ESCP) is required by the MAC when land disturbance is planned, regardless of project size. A watershed district permit may also be required depending on project location and size of the project.

Land-disturbing projects at MSP located in the Lower Minnesota Watershed District (LMRWD):

The MAC has been granted Local Government Unit (LGU) status by the LMRWD for Minneapolis-St. Paul International Airport (MSP). An LMRWD permit is not required. MAC review and approval of the ESCP is required for MSP projects with land-disturbing activities within the LMRWD boundary.

Land-disturbing projects at MSP located in the Minnehaha Creek Watershed District (MCWD):

A watershed district permit is required for applicably sized MSP projects within the MCWD. The permitting process will require the development of an ESCP. If the project does not require a MCWD permit, the MAC must review and approve the ESCP.

Land-disturbing projects at MAC reliever airports:

A watershed district permit is required for applicably sized reliever airport projects. The permitting process will require the development of an ESCP. If the project does not require a watershed district permit, the MAC must review and approve the ESCP.

MAC requires preparation and implementation of an ESCP for land-disturbing activities in order to limit erosion from wind and water; reduce flow volumes and velocities of stormwater moving off-site; reduce sedimentation into water bodies; and protect soil stability during and after site disturbance. These measures should reflect the following principles:

• Minimize, in area and duration, exposed soil and unstable soil conditions.
• Minimize disturbance of natural soil cover and vegetation.
• Protect receiving water bodies, wetlands and storm sewer inlets.
• Protect adjacent properties from sediment deposition.
• Minimize off-site sediment transport on trucks and equipment.
• Minimize work in and adjacent to water bodies and wetlands.
• Maintain stable slopes.
• Avoid steep slopes and the need for high cuts and fills.
• Minimize disturbance to the surrounding soils, root systems and trunks of trees adjacent to site activity that are intended to be left standing.
• Minimize the compaction of site soils.
• Emergency activity immediately necessary to protect life or prevent substantial physical harm to person or property may not be subject to these erosion control requirements.

Submittal

When a watershed district permit is required, appropriate submittals are required by the proposer to the appropriate watershed district.

An ESCP is required for all projects with land-disturbing activities and must be provided to the MAC (regardless of watershed permitting applicability). MAC approval of the ESCP is required prior to commencing any land disturbing activities.

Erosion and Sediment Control Plan (ESCP)

The ESCP is a stand-alone document that shall conform to MAC’s standard specification Section 01 89 30 “Erosion and Sediment Control” and include the following:

• Applicant’s name, address, telephone number and date.
• Names, addresses, telephone numbers and responsibilities of all contractors, subcontractors and other persons who will engage in the land-disturbing activities.
• Names, addresses and telephone numbers of persons responsible for preparing the ESCP. Signature of applicant with a certification that he or she understands that the proposed activity must be conducted in compliance with this guideline and the approved ESCP, and that the application is complete and accurate to the best their belief.
• An ESCP as described in this guideline with any soils and geological reports completed. A geological report as indicated in this guideline, if requested by the MAC.
• A vicinity map showing the site location in relation to surrounding roads, steep slopes, significant geographic features, structures, lakes, streams, wetlands, stormwater ponds, ditches and storm sewer catch basins, within 1,000 feet of the area to be disturbed.
• Site plans for existing and final proposed conditions drawn to appropriate scale, showing contours, property and lease lines, water features, drainage features and vegetation.
• Proposed grading and land-disturbing activities including grubbing and clearing. Areas of soil or earth material storage; quantities of earth material to be removed, placed or stored.
• Locations of proposed runoff control, erosion prevention, sediment control and temporary and permanent soil stabilization measures.
• A description of how erosion control measures will be monitored, maintained and removed
• Plans and specifications for all proposed erosion control measures and protection of stockpiles.
• Plans and specifications to properly manage waste generated on site including but not limited to construction related washout, and spills/releases.
• A detailed schedule indicating dates and sequence of activities.

Plans shall include measures and procedures to reasonably minimize topsoil compaction and shall provide that all compacted topsoil shall be broken up to a depth of at least six inches before revegetation. All fabric fences used for erosion and sedimentation control and all other temporary controls shall be removed promptly when the MAC has determined that the site has been permanently stabilized.

Soils Engineering and Geology Reports

The MAC may require soil borings or other site investigation to be conducted and may require submission of a soils engineering or geology report. The report shall at a minimum include the following:

• Data and information obtained from the requested site investigation.
• A description of the types, composition, permeability, stability, erodibility and distribution of existing soils on site.
• A description of site geology.
• Conclusions and revisions, if any, to the proposed land-disturbing activity at the site or the ESCP, including revisions of plans and specifications.

Additional Information

MAC may require any additional information or data as it finds relevant and necessary to evaluate and act on an application.

Maintenance

On any property on which land-disturbing activity has occurred, the applicant shall, at a minimum, inspect, maintain and repair all erosion control facilities as needed until project completion and/or final stabilization.

Notification and Inspection

The applicant or its authorized agent shall notify the MAC Airport Development department at the following points:

• On completing installation of perimeter erosion and sedimentation controls.
• On completing land-disturbing activities and putting into place measures for final soil stabilization and revegetation.
• When the site has been permanently stabilized and revegetated.
• When all temporary erosion and sedimentation controls have been removed from the site.
• At each stage indicated, the applicant shall not proceed with site activity until the MAC Airport Development department has been notified and given two business days to inspect the site.