Leveling part of a hill iwith a 25% Slope- see atttachments

   / Leveling part of a hill iwith a 25% Slope- see atttachments #1  

Ocean2026

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There's a hill that ascends 850 feet in height- But see attached. want to level the first 500 feet which starts from 200 ft above sea level and goes to 360 ft above sea level. The land is in Skaokawa WA and one can see the Columbia River - Vista Park at the bottom. The entire hill - mountain goes up 800 feet. It has young trees and not sure if there is a landslide risk- probably not.

1. Is this too steep to do safely say in a D2 or D4? ( How do I stop from rolling over until I end up in the river?)

2. What methods should be used to distribute the dirt relatively equally?

3 Any other tips
 

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  • bulldozer area.png
    bulldozer area.png
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   / Leveling part of a hill iwith a 25% Slope- see atttachments #2  
Your best bet might be to call an excavator and tell them they can have as much fill dirt as they want as long as this is leveled. Even at that though that is alot of hillside to move and try to level.
 
   / Leveling part of a hill iwith a 25% Slope- see atttachments
  • Thread Starter
#3  
Thanks there's plenty of dirt in that area-- I think a backhoe would be better than a dozer though.
 
   / Leveling part of a hill iwith a 25% Slope- see atttachments #4  
Your best bet might be to call an excavator and tell them they can have as much fill dirt as they want as long as this is leveled. Even at that though that is alot of hillside to move and try to level.

Is the quarry just east of you still active?

Skamokawa-quarry.jpg

Bruce
 
   / Leveling part of a hill iwith a 25% Slope- see atttachments #5  
You are proposing a 160 vertical cut partway up an 850 foot slope? Am I understanding that correctly? How wide is the area you want to excavate? Sounds like a massive project to me.
 
   / Leveling part of a hill iwith a 25% Slope- see atttachments #6  
big excavator... big bucks... but a great view? pics when you get up there next time.
 
   / Leveling part of a hill iwith a 25% Slope- see atttachments
  • Thread Starter
#7  
I have some great pics already . The upper part has the best views, if this doesnt upload sfischerlaw@gmail.com and I will send

Rick I basically want to somewhat level am acre mabe 60,000 square feet - would that not be doable in a solid week 7 days of work? nice. skamokawa.JPG[
 
   / Leveling part of a hill iwith a 25% Slope- see atttachments
  • Thread Starter
#8  
Bruce its still there -not sure how active.
 
   / Leveling part of a hill iwith a 25% Slope- see atttachments #9  
With just a dozer? Why not get a quote for it from a few contractors with a good reputation so you have some idea if the time involved to do it right?
 
   / Leveling part of a hill iwith a 25% Slope- see atttachments #10  
Wow, nice views.

You're going to end up with a super steep 160ft high slope behind your new house or whatever you're going to put on the new flat space. That sounds like it could be a landslide hazard especially if you're removing material from the bottom of an existing slide. I'd want a geologist's report and maybe an engineer for the project. You'll probably need those for permits anyhow.

BTW, big earthquakes have happened in the pacific northwest. There was a 9.0 on the Cascadia fault in 1700.
 

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