Self Storage- Dirt

[Henry Clark]

Soil erosion Plan:

1. DNR- NPDES 2 plan. Received approved notification. This covers all of our activities.

2. DNR/Corp Eng- floodplain. This is actually in a hilly area, but you still need to do Flood plain analysis. Even though the name is FloodPlain, it covers potential animal loss, downstream flooding, etc. Plus if it is in a Flood plain.

3. Local DNR- SWPP weekly check up. You have to maintain a weekly report of your erosion practices, any additions or changes to the practices, weather occurrences and impact on the site.

4. USDA local Soil Conservation board- they approve your erosion plans from a Soil Conservation standpoint, versus an erosion standpoint, if you're in farming country.

5. County Engineer- floodplain approval if needed, and Excavation permit.  Our county anything less than 1 acre, no permit needed.  

Got all of the applications out. Waiting on approvals, changes or additions needed.

We have a map also, but below is the written Soil Erosion Plan:

Soil Conservation and Erosion Plan

Location: xxxxxxxxxx

Description of project: Developing a subdivision with lots ranging from 2 acres to about 10 acres. Will end up with around 25 lots. This plan is just for the development of the overall subdivision. Individual lots will be sold separately as undeveloped and those home builders will maintain those soil plans individually as needed.

Driveway Entrances- Generally 25 feet wide by 25 feet deep. There are 6 entrances from County roads xxxxxxxxx and xxxxx street. Each entrance will have brome grass seeded and grass mat applied to the shoulders and ditch areas. Road surfaces themselves will be either crushed rock or crushed asphalt on Geogrid mesh; or concrete.

Driveways- Generally 25 feet wide with approximately 20 foot shoulders; about ¾ mile in length in total. Brome grass seeded and grass mats applied to shoulders of driveways. Hay bales applied to slow water flow down along driveways as needed. This 75 acres is an existing farm field with Terraces already in place. All driveways and roadways have immediate pre-existing grass terraces in place below the roads and entrances. Where terraces were cut through for roads to pass, we filled the ends of the cut terraces to prevent water erosion. About 200 feet of Terraces was displaced. And applied grass mats and Brome seeding.

Silt Fences:

Where adjoining Terraces and silt ponds do not control run off; Silt fence is applied in two areas. Noted as Silt Fence 1 and 2.

Dams:

Dam 1- East side of property near farthest East property line. This is in a ditch that crosses in the middle of the property from West to East. Dam depth will be about 25 feet deep at the deepest point and about 135 feet across. This is a narrow pond due to the structure of the ditch. Drainage pipe will be installed in the middle. Overflow will be on the north side. Concrete rip rap will be placed in the overflow area and directly behind the Drain pipe effluent end.

Dam 2- Approximately the middle of the property. This is a pre-existing silt pond that catches the drainage area to the South of the property across xxxxxx road, which flows to the north. Silt in pond in being removed. All weed trees are being removed from dam site. Drainage tube being installed in the northeast corner. Concrete riprap is being placed below the drain pipe. Dame depth is about 8 feet water level with 3 foot freeboard. Approx 238 feet across. Dam itself is being raised about 5 feet. All areas of the dam itself will be seeded to brome seed and Grass mats will be applied.

Dam 3- Approximately middle of property. In the same ditch that crosses the properties full length West to East. Dam will be about 25 feet deep at the deepest point and about 162 feet across. This is a narrow pond due to the structure of the ditch. Drainage pipe will be installed in the middle. Overflow will be on the north side. Concrete rip rap will be placed in the overflow area and directly behind the Drain pipe effluent end.

Dam 4- The west 1/3 of the property. We are putting a silt pond in to a ditch, that feeds into the larger ditch in the middle of the property. This water flows from the south drainage area across xxxxxxx road. Dam height will be about 20 foot high, water15 feet deep, 128 feet across, with drain pipe in the middle and overflow to the East side of the dam. Concrete riprap will be placed at the effluent side of the Drainage pipe. All areas of the dam will be seeded to Brome grass and covered in Grass mat.

Dam 5- This is a very small silt pond about 20 x 20 x 5 on the north side of the property in the first ¼. 45 feet across, 5 foot depth. There are no terraces here. This will catch any silt from the North West corner of the property, prior to it getting into the big middle ditch. This is seeded to Brome grass and has grass mats applied.

Soil burroughs: Two sites on the property will be leveled with the surrounding fields and used for fill dirt for the roads and dams. No dirt will leave or be brought onto the property. The two burrough sites are about 1 acre and ½ acre in size. These sites will be seeded to brome. They both have pre-existing grass terraces directly below and adjoining them.

Fields: Currently stubble from corn or soybeans. They will be seeded to Brome grass by a no-till drill in the spring time and allowed to go to a grass field for the future.

Disturbance area:

Roads 2,640 feet 80 foot road/shoulder= 211,200 sqft

Entrances 6 at 24 deep 80 wide w/shoulders= 11,520 sqft

Burough surface 2 acres x 43,560 sqft= 87,120 sqft

Dams 708 feet long x 50 avg wide= 35,400 sqft

Total = 345,240 sqft

Total site= 75 acres at 43,560sqft/acre= 3,267,000 sqft

Disturbance %= 10.6%

Runoff Coefficient:

Silt Loam group B; Farmland >6% grade= .28 runoff coefficient.

Soil Types and approximate Slopes after grading and disturbances:

Soil is Silt Loam. Road/Entrance/Dam Slopes will be on a 3 to 1 grade down to 5 to 1 on roadways. 3 slope, 1 height. Surfaces will be flat or a zero grade. This will be the tops of the Road/Entrances/Dams and the borough areas.

Development Phases:

1. Road entrances, Roads, Dams, and Buroughs will be completed by June, 2023.

2. Trenching and back fill for Electric lines will be completed by June, 2023.

3. We are just selling approximately 25 lots. Excavation of those will be completed by the individual homeowners. No applicable.

Timeline for development and associated controls.

Timeline noted above. All controls are noted above. Lots will start to sell July, 2023 or later. Selling of lots timeline could take 3 to 7 years.

Owner: xxxxxxxx

Ph- xxxxxxxxx

email- xxxxxxxxx

Mailing Address:

xxxxxxxxxx