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The survey can be dont by registered engineer or government survey person. The cost is about $300. If your final grading is not finished properly accroding to the design requirement, you maybe be required to do it. The survey is done by testing those points of design.
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I did the final grading and landscaping myself. My topsoil is much thicker than those professonal company. I calculated the volume of topsoil according to 4 inch thick layer. The survey passed one time. But my several neighbours seldom passed the survey one time. Major reason is that those company they hired didn't use much topsoil.
7 `" `. u8 P1 K: M/ z6 M" dI did the final grading and landscaping myself. My topsoil is much thicker than those professonal company. I calculated the volume of topsoil according to 4 inch thick layer. The survey passed one time. But my several neighbours seldom passed the survey one time. Major reason is that those company they hired didn't use much topsoil.
( a( x. Q- p8 b* B# J& x& D& WI did the final grading and landscaping myself. My topsoil is much thicker than those professonal company. I calculated the volume of topsoil according to 4 inch thick layer. The survey passed one time. But my several neighbours seldom passed the survey one time. Major reason is that those company they hired didn't use much topsoil.
" p- a4 c! U, `. r$ l
I did the final grading and landscaping myself. My topsoil is much thicker than those professonal company. I calculated the volume of topsoil according to 4 inch thick layer. The survey passed one time. But my several neighbours seldom passed the survey one time. Major reason is that those company they hired didn't use much topsoil.