re: soo line dump site – 2014 annual soil cover inspection · november 13, 2014 . ms. aimee zack...

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November 13, 2014 Ms. Aimee Zack Canadian Pacific 120 S. 6 th Street, Suite 900 Minneapolis, Minnesota 55402 Re: Soo Line Dump Site – 2014 Annual Soil Cover Inspection Dear Aimee: The purpose of this letter is to summarize the results of the 2014 Annual Soil Cover Inspection at the Soo Line Dump Site (the Site). As noted in the MPCA-approved Remedial Action Plan Implementation Report (Barr, Oct. 2007): Additional activities at the Site include annual inspections of the [soil cover] for two years, with corresponding documentation to the MPCA. The first site inspection was performed in the Spring of 2007, with the second planned for Spring of 2008; both events occurring following the final snow melt. Both inspections will include a complete site walk with photos of the condition of the soil cover. If necessary, repairs will be performed to minimize the potential for future erosion. Annual inspections continued during preparation and agency review of the UECA. Although that process was completed in 2014, Canadian Pacific (CP) requested that Barr continue to perform the annual site inspections to document the condition of the soil cover. I performed the Site inspection on September 18, 2014. Key findings of the inspection are summarized below. Vegetation: In general, vegetation coverage is very good. Both the northern and southern slopes are well-covered, and the hot spot excavation areas show nearly complete vegetative coverage. Vegetative cover in the ditch located west of the consolidated waste area, which was graded in 2011 as part of the stormwater utility improvement, is at near 100% coverage, which is an improvement over the conditions in 2013. The vegetative cover is sufficient to prevent erosion throughout the Site. Erosion: No erosion was present on the consolidated waste area. The utility improvement in the ditch located west of the consolidated waste area was successful in eliminating erosion in the area. Roadway: The road which crosses the soil cover does not show signs of undue compaction; no significant erosion was observed. Fences: The chain-link fence is in place and competent. In my professional opinion, there are no deficiencies in the soil cover that need to be actively addressed. A photo log illustrating key observations of the inspection is attached.

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Page 1: Re: Soo Line Dump Site – 2014 Annual Soil Cover Inspection · November 13, 2014 . Ms. Aimee Zack . Canadian Pacific . 120 S. 6th Street, Suite 900 . Minneapolis, Minnesota 55402

November 13, 2014 Ms. Aimee Zack Canadian Pacific 120 S. 6th Street, Suite 900 Minneapolis, Minnesota 55402 Re: Soo Line Dump Site – 2014 Annual Soil Cover Inspection Dear Aimee: The purpose of this letter is to summarize the results of the 2014 Annual Soil Cover Inspection at the Soo Line Dump Site (the Site). As noted in the MPCA-approved Remedial Action Plan Implementation Report (Barr, Oct. 2007):

Additional activities at the Site include annual inspections of the [soil cover] for two years, with corresponding documentation to the MPCA. The first site inspection was performed in the Spring of 2007, with the second planned for Spring of 2008; both events occurring following the final snow melt. Both inspections will include a complete site walk with photos of the condition of the soil cover. If necessary, repairs will be performed to minimize the potential for future erosion.

Annual inspections continued during preparation and agency review of the UECA. Although that process was completed in 2014, Canadian Pacific (CP) requested that Barr continue to perform the annual site inspections to document the condition of the soil cover. I performed the Site inspection on September 18, 2014. Key findings of the inspection are summarized below.

Vegetation: In general, vegetation coverage is very good. Both the northern and southern slopes are well-covered, and the hot spot excavation areas show nearly complete vegetative coverage. Vegetative cover in the ditch located west of the consolidated waste area, which was graded in 2011 as part of the stormwater utility improvement, is at near 100% coverage, which is an improvement over the conditions in 2013. The vegetative cover is sufficient to prevent erosion throughout the Site.

Erosion: No erosion was present on the consolidated waste area. The utility improvement in the ditch located west of the consolidated waste area was successful in eliminating erosion in the area.

Roadway: The road which crosses the soil cover does not show signs of undue compaction; no significant erosion was observed.

Fences: The chain-link fence is in place and competent.

In my professional opinion, there are no deficiencies in the soil cover that need to be actively addressed. A photo log illustrating key observations of the inspection is attached.

Page 2: Re: Soo Line Dump Site – 2014 Annual Soil Cover Inspection · November 13, 2014 . Ms. Aimee Zack . Canadian Pacific . 120 S. 6th Street, Suite 900 . Minneapolis, Minnesota 55402
Page 3: Re: Soo Line Dump Site – 2014 Annual Soil Cover Inspection · November 13, 2014 . Ms. Aimee Zack . Canadian Pacific . 120 S. 6th Street, Suite 900 . Minneapolis, Minnesota 55402

Photograph Log2014 Site Inspection: Soo Line Dump Site

Canadian Pacific; Shoreham Yard

P:\Mpls\23 MN\27\2327G55 Soo Line Dump\WorkFiles\Site Inspections\2014 Inspection\2014 Soo Line Dump Site Photo Log.xls

Photo 1: Northern face (toe) of Soo Line Dump Consolidated Waste Area: Looking Northwest.

Photo 2: Northern face (toe) of Soo Line Dump Consolidated Waste Area: Looking Northeast.

Page 4: Re: Soo Line Dump Site – 2014 Annual Soil Cover Inspection · November 13, 2014 . Ms. Aimee Zack . Canadian Pacific . 120 S. 6th Street, Suite 900 . Minneapolis, Minnesota 55402

Photograph Log2014 Site Inspection: Soo Line Dump Site

Canadian Pacific; Shoreham Yard

P:\Mpls\23 MN\27\2327G55 Soo Line Dump\WorkFiles\Site Inspections\2014 Inspection\2014 Soo Line Dump Site Photo Log.xls

Photo 3: Top-central portion (including road) of Soo Line Dump Consolidated Waste Area: Looking West.

Photo 4: Vegetative cover in utility improvement area; Looking South.

Page 5: Re: Soo Line Dump Site – 2014 Annual Soil Cover Inspection · November 13, 2014 . Ms. Aimee Zack . Canadian Pacific . 120 S. 6th Street, Suite 900 . Minneapolis, Minnesota 55402

Photograph Log2014 Site Inspection: Soo Line Dump Site

Canadian Pacific; Shoreham Yard

P:\Mpls\23 MN\27\2327G55 Soo Line Dump\WorkFiles\Site Inspections\2014 Inspection\2014 Soo Line Dump Site Photo Log.xls

Photo 5: Outfall of Utility Improvement: Looking South.

Photo 6: Area of 'hot spot excavation': Looking North.

Page 6: Re: Soo Line Dump Site – 2014 Annual Soil Cover Inspection · November 13, 2014 . Ms. Aimee Zack . Canadian Pacific . 120 S. 6th Street, Suite 900 . Minneapolis, Minnesota 55402

Photograph Log2014 Site Inspection: Soo Line Dump Site

Canadian Pacific; Shoreham Yard

P:\Mpls\23 MN\27\2327G55 Soo Line Dump\WorkFiles\Site Inspections\2014 Inspection\2014 Soo Line Dump Site Photo Log.xls

Photo 7: Area of 'hot spot excavation': Looking South.