HomeMy WebLinkAbout4/14/2021 Item 2, Stelfox
Wilbanks, Megan
From:Steven Stelfox <
To:Advisory Bodies; Corey, Tyler
Cc:Jill Stelfox
Subject:Item 2 - SBDV-2029-2018 (163 Serrano Heights)
Attachments:Rourke Property 163 Serrano Heights Dr. Erosion Concerns.pdf
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Greetings -
I live at 131 Serrano Heights Drive. I’m the downhill slope next door neighbor of John Rourke and have enjoyed being his
neighbor.
Our property is immediately adjacent to and runs downhill from 163 Serrano Heights Drive: the property of the
proposed exception and the lot splits. Our side yard & backyard run along the rear of proposed lots 2 and 3. These are
above us on the hill and run downward into our yard. The slope is significant between our properties. The rear section
of proposed lot 3 - as you head away from the existing barn towards and into my backyard through proposed lot 2 -
becomes increasingly steeper and then drops off in my yard. Drainage and runoff have been an issue over the past 10
plus years, which has caused substantial erosion to our yard.
The downhill slope from the barn on the Rourke property to the seasonal stream in my backyard is significant. The 18%
grade for lot 3 is suspect, with the adjacent drop off in our yard and exceeds 20%. In addition, a known underground
stream runs across proposed lot 3 toward the seasonal stream below. This underground stream, which is not noted on
the plats or report submitted, is evidenced by run of wild berry vines tracing the stream and running down the hill across
proposed lots 2 and 3 then into our parcel.
Attached is a PDF that contain pictures that show the slope of the hillside for proposed lot 3 and lot 2, the significant
erosion due to drainage and runoff issues from the above Rourke parcel, and the path of the underground stream. We
have concerns that development of these lots could have compounding and adverse effects on drainage. We have
particular concerns that any development on top of the underground stream could alter its course towards the path of
least resistance - our house. It is our belief that these have not been properly vetted and should not be developed. We
request that the lot split not be granted until natural underground stream, drainage and erosion issues are adequately
investigated, and we have security and surety that run off and erosion due to splitting the development of this single lot
into three will not be our liability or cause further harm to the hillside in its entirety.
We believe that based on the report submitted for approval and the requirements under the California Water Board
Construction General Permit Order 2009-0009-DWQ or related, there is a requirement to develop a Storm Water
Pollution Prevention Plan. Further, the underground stream on this parcel of land feed into an underground basin that
has been recognized by the Sustainable Groundwater Management Act (SGMA) as a known part of the Groundwater
Basin 3-009 in San Luis Obispo Valley per
https://sgma.water.ca.gov/webgis/?jsonfile=https%3a%2f%2fsgma.water.ca.gov%2fportal%2fresources%2fjs%2fmapco
nfigs%2fGspSubmittalsConfig.js&_dc=0.7745551714322108, which requires additional review of the subterranean
stream.
1
In addition, we have concerns about traffic and construction equipment access to the site. Not noted on the report is
that Serrano Heights Drive provides access to the Madonna trail head. Further, Serrano Heights Drive narrows to single
lane and becomes very congested with vehicles parking on both sides of the street to access the Madonna trail head.
The city is aware of this narrowing and congested path and provides a pick sized truck for trash and recycling services.
Larger trucks and construction equipment will be limited and likely unable to proceed past our house, due to congestion
and the streets narrowing to single lane 50 feet past my driveway. This results in my driveway being used for a
turnaround and staging area. Consideration needs to be given to the amount of traffic parked along either side of the
road and the limited access for construction equipment to maneuver on the street without accessing using my driveway
as the turnaround.
Steven Stelfox
M: 408-444-0949
sstelfox@mac.com
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