HomeMy WebLinkAboutWPO201200034 Review Comments Erosion Control Plan 2012-04-18Philip Custer
From: Philip Custer
Sent: Wednesday, April 18, 2012 11:57 AM
To: 'Schooley, Christopher (cds7c)'; Alan Franklin ( afranklin @waterstreetstudio.net); Eugene
Ryang
Cc: Ana Kilmer; Mark Hopkins; Joanne Tu Purtsezova
Subject: Approval of the ESC plan for Birdwood Golf Hole #3 (WPO- 2012 - 00034)
Good morning,
The latest revision of the ESC Plan for Birdwood Golf Hole #3 (WPO- 2012 - 00034), received 16 April 2012, has been
reviewed. All previous comments have been addressed and the plan is hereby granted approval on the condition that
the design of sediment trap 1 and the sediment basin are modified as follows:
-For the design of trap 1 in the ESC narrative, please make corrections to the bottom of the facility elevation, bottom of
stone weir elevation, and the crest of the stone weir elevation to match the elevations on Sheet 1.
- Modify the dewatering orifice diameter to 3 ". (Round down)
-On sediment basins without an emergency spillway, the principal spillway crest must be 3ft below the top of the
embankment. Please provide an emergency spillway at 540.5, raise the embankment to 543 (maintaining proper
embankment width) and set the principal spillway crest at 540, or raise the embankment to 542.5 (maintaining the
proper embankment width) and set the principal spillway crest at 539.5. Please note that elevation of the spillway
crests currently differs between the calculations and the plan. Both appear to work but they must be consistent and the
embankment must be adjusted accordingly.
Once these changes have been made, please provide 4 copies of the ESC plan and narrative to my attention so I can
transfer them to the ESC inspector. (No fees review fees required) Joanne may require additional copies of the plan for
the LOR.
The ESC bond has been calculated to be $47,900. To post the ESC bond, please contact Ana Kilmer at 296 -5832 x3246.
Once the ESC bond has been posted, the first year permit and inspection fee paid, and the copies of the plan and
narrative dropped off to me, please contact Mark Hopkins at 296 -5832 x3380 to set up a pre- construction meeting.
Please let me know if you have any questions.
Thanks,
Phil
296 -5832 x3072