HomeMy WebLinkAboutEmail August 2019 2
Grant, Kelly
From:Raddatz, Hannah L. <hraddatz@bscgroup.com>
Sent:Thursday, August 29, 2019 5:32 PM
To:Grant, Kelly
Cc:Creighton, Matthew T.
Subject:RE: Potential Isolated Land Subject to Flooding at 38 Willow Street
Good Afternoon Kelly,
Thank you for getting back to me. I conducted another site visit/delineation today to check if our ILSF, which was
originally flagged as a BVW, could qualify as a locally regulated Vegetated Wetland under the Yarmouth Regulations. The
vegetation with immediately adjacent to the basin area consists of blackberry, green brier, multiflora rose, fox grape,
and patches of jewelweed. Much of the basin itself is bare aside from a few willow, likely due to the dense covering of
vines blocking most of the sunlight. From these observations, would it be correct to assume that this area does not fit
within any of the wetland types detailed in the Vegetated Wetland definition?
As for the hydrologic connection from Hallets Millpond, that segment of the connection disappears somewhere within
the property listed as 46 Route 6A. I followed the hydrologic connect underneath the Main Street (6A) culvert and onto
the property listed as 46 Route 6A, where it disappears into upland forest, losing its banks entirely.
Thank you again for your guidance,
Hannah
From: Grant, Kelly \[mailto:KGrant@yarmouth.ma.us\]
Sent: Wednesday, August 28, 2019 2:59 PM
To: Raddatz, Hannah L. <hraddatz@bscgroup.com>
Cc: Creighton, Matthew T. <mcreighton@bscgroup.com>
Subject: RE: Potential Isolated Land Subject to Flooding at 38 Willow Street
Hi Hannah
I have taken a quick look at the mapping on this area and it looks like there is a channel that runs along the north side of
Willow street under Route 6A and to the wetland area at Hallets Millpond. The property at 38 Willow street appears to
have vegetated wetland that has a connecting culvert under willow street and in theory flows to the channel on the
other side of the road. At first glance I would not have called this ILSF as it has an outlet. Does it meet the criteria of a
vegetated wetland under the bylaw? The best way to proceed would be to submit an RDA or ANRAD and submit the
material you have.
Thanks
Kelly
From: Raddatz, Hannah L. \[mailto:hraddatz@bscgroup.com\]
Sent: Monday, August 26, 2019 2:30 PM
To: Grant, Kelly <KGrant@yarmouth.ma.us>
1
Cc: Creighton, Matthew T. <mcreighton@bscgroup.com>
Subject: Potential Isolated Land Subject to Flooding at 38 Willow Street
Attention! This email originates outside of the organization. Do not open attachments or click links unless you
are sure this email is from a known sender and you know the content is safe. Call the sender to verify if unsure.
Otherwise delete this email.
Good Afternoon Kelly,
I am reaching out to you to discuss a potential isolated land subject to flooding located on an undeveloped property at
38 Willow Street. A delineation was conducted in spring of 2019 by Matthew Creighton, and subsequent site visits have
also been conducted to determine if the pooled area near the northwestern corner of the property (which does not
appear on Mass GIS data layers) is associated with any other resource areas (no other resource areas were located on
the property of the neighboring properties to the north or south). We became concerned that this area may have
restricted drainage due to the blocking of a Mass DOT culvert which runs beneath Willow Street and continues along
what appears to be a manmade channel towards Main Street, where the channel continue northwest.
At the suggestion of Greg DeCesare of DEP, we conducted soil/vegetation plots along the channel on the northwestern
side of Willow Street towards Main Street (6A). Though there was significant redox within the first 60 feet of the
channel and a small vegetated area roughly 60-80 feet from the culvert, there were no areas between Willow Street and
Main Street which would qualify as a BVW or other resource areas based on our data collection. The area is comprised
of 80% invasive species such as Black Locust and Norway Maple, along with Morrow’s Honeysuckle, Multiflora Rose, and
English Ivey, even in or immediately adjacent to the channel. Investigations were also conducted north of the Main
Street culvert, which revealed much of the same.
Matt and I would like your opinion on the matter before we move forward with any permitting for 38 Willow Street. We
would be happy to attend a Site walk with you or submit photos/notes for your review.
Thank you for your time,
Hannah
Hannah Raddatz | Wetland Scientist
BSC Group
349 Route 28, Unit D | West Yarmouth | MA 02673
direct | 617-896-4584
main | 508-778-8919
cell | 603-702-2428
2