2009-07-24_GENERAL DOCUMENTS - M2009076 ‎(2)‎

• Permit No: M2009076
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 7/24/2009
• Doc Name: Declaratory Order Info.
• From: Venture Resources
• To: DRMS
• Permit Index Doc Type: Gen. Correspondence
• Media Type: D
• Archive: No

The following method should be used to
-?- construct a roof drip line infiltration trench.
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1. Dig a trench of the required size along the
roof drip line as shown. Allow 3" extra width
mot' for the border boards.
2.
E 2. Add the border boards (which are optional)
1 and gravel to fill the trench to ground level.
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3. Roof runoff collected by a gutter and
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downspout system should be discharged to an
`-- infiltration trench or dry well.
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The following method should be used to construct a driveway infiltration
trench.
1. Grade the driveway with a 1%-5% slope towards the trench.
2. If the driveway slope is less than 15%, size and construct a trench along
the low side of the driveway as described above.
3. If driveway slope is 15% or more, install a paved ditch or trench drain
along the low side of the driveway and route the
runoff to lateral infiltration trenches located
?`-- 3" along slope contours or to dry wells located in
more level areas. Install a 2' long water bar
ie'?v?+. between each section of ditch to prevent runoff
from continuing down slope.
4. Do not install lateral infiltration trenches
on fill slopes steeper than 4 horizontal to 1
vertical (4: 1). Do not locate a driveway on top of
an infiltration trench. Avoid placing infiltration
trenches where their construction will damage
tree roots.
The following method should be used to
construct a dry well.
1. Determine the required dry well size
2. Dig a basin of the required size and fill it
with gravel. You may want to cover the top of the
dry well with a shallow layer of sand or wood
chips to create a more pleasing appearance.
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