Temporary construction erosion and sediment control means managing storm water until the permanent storm system is operational and the site has been stabilized with vegetation,concrete,asphalt,landscaping and other practices.
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This is not the best way to get grass growing. The seed sits on the blanket which is a quarter to half inch above the soil. Since the seed needs to be in contact with the soil to have the best chance of growing,this will reduce the quantity of grass that grows. In a ditch,the more grass the better. The best way is to hydroseed first and then install the blanket. Last week’s video showed how a creative contractor constructed a slope tracking excavator bucket. This video shows the effect of a little rain on the slope. This is why the contractor didn’t want to use a heavy piece of equipment to track the slope as they knew that the slope would unravel from being too wet and having a relatively high silt content. Leave it to the contractor to come up with creative solutions. Confronted with a small,steep slope and wet soil,the contractor didn’t want to risk walking a small caterpiller up and down to roughen it before hydroseeding. Using some angle iron and an excavator bucket,they welded up a slope tracker. The operator tamps the slope with the bucket just like they are compacting the slope. This is the result. I know,great name for an erosion and sediment control product,right? These work great if you are trying to reduce the total amount of sediment being discharged from a project. But,if you have to reduce the turbidity of the water to meet water quality standards,this won’t do it. It looks like a dirty,poorly managed site on first inspection,but is it really? When you get the whole story this project turns out have a low risk for water quality compliance violations. Dirt loaded into front loader bucket and hauled to stockpile,or dirt side cast onto asphalt:which is cheaper? How about no sweeper needed,no dirty water going down the drain. I go with the first answer. If I’ve said it once,I must have said it 3 or 4 times:“Keep your tires clean!”. Who wants to use a tire wash and have to get rid of a whole lot of dirty water (process water) that can’t go down the storm drain? Save yourself some hassle and money. Give your employees a raise with the money you save. You are hauling dirt on a dry day and the dust is flying. The water truck driver’s head is about to explode trying to keep up with the dust control. Save yourself a Labor and Industries claim and use the ground up vegetation (hog fuel) piled up over on the edge of the project,waiting to be hauled off to the landfill. You just built a bioswale and it needs to be operational very soon. The plans and specifications call for hydroseed. Want to reduce your risk of problems? How about using sod and temporary irrigation instead? |   | |
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