HomeMy WebLinkAbout2000-05-19 OPH Email Re Applicant Call re BVWD RequestKris Danielson
From:
Peters, Erik G [epeters a@bonestroo.com]
Sent:
Thursday, May 25, 2000 12 :36 PM
To:
Postler, Dennis M.
Cc:
'tmelena a@cityofoakkparkheights .cam`; ' jjohnson @cityofoakparkheights.com';
'kdanielson a@cityofoakparkheights.com'
Subject:
RE: W.A.T. E Enterprises (Kern Center)
The information John from Barr Engineering is requesting is a standard
request for sites that are completely undeveloped with no infrastructure in
place.
We can provide documentation for the hydraulic calculations forming the
basis for 5/25/00 memo, site contours, location of existing stormwater
facilities and a copy of the construction plans. The developer will have to
supply a letter stating the presence or absence of wetland on his/her site.
The VBWD's rule that proposed runoff rate must match predevelopment runoff
rates might pose some difficulties. Since the additional development will
contribute additional runoff and a small increase in the peak flow out of
the 12" control. The regional pond proposed immediately west of the Kerns
Center will excede the VBWD's rule once it is constructed.
f the VBWD is going to object to the current and/or future situation, we can
always remind them that the option exists for re-- routing all of the storm
water runoff to the south and keep it within the VBWD. This was the
original drainage direction. The details as to why and how a pipe was
originally constructed to the west is unknown. It may be that current
drainage situation was influenced by the VBWD. Regardless, since the area
to the south contains landlocked lakes, the VRWD will not view our reminder
favorably.
Regards,
Erik Peters
> ----- Original Message---- -
> From: Postler, Dennis M.
> Sent: Thursday, May 25, 2000 3:45 AM
> To: Peters, Erik G
> Cc: 'tmelena a@cityofoakkparkheights.com',
> 'jjohnson a@cityofoakparkheights .cam'; 'kdanielson a@cityofoakparkheights.com'
> Subject: RE: W.A.T. E Enterprises (Kern Center)
• Erik:
• Is this guy serious (see below)? He's just spewing some standard
• requirement list for new major storm sewer and ponding improvements - not
• for an individual site improvement such as W.A.T. E. Enterprises is
• proposing. Also, this area isn't even tributary to the Valley Branch
• Watershed District anymore.
• Do you have any of the info. he is requesting readily available to send to
• him ??
• Dennis M. Postler
• Bonestroo, Rosene, Anderlik & Associates
• 2335 West Highway 36, St. Paul, MN 55113
• Direct: (651) 604 -4815
• Office: (651) 536 -4600, x4815
• Fax: (651) 635 -1311
• E -mail: dpostler@bonestroo.com
0)
>
-_ --- Original Message---- -
>
From: John Hanson [SMTP:jhanson a@barr.com]
>
Sent: Wednesday, May 24, 2000 5 :34 PM
>
To: ffdsury a@att.net; dpostier a@bonestroo.com;
> Mark. doneux a@co.washington.mn.us
>
Cc: tmelena a@cityofoakkparkheights.com;
> jjohnson a@cityofoakparkheights.com; kdanielson @cityofoakparkheights.com
>
Subject: Re: W.A.T. E Enterprises (Kern Center)
Dennis-
Thank you for the memorandum describing the situation around
> the Kern
>
center. However, as with any project requesting a permit
> within VBWD,
the
>
following information should be submitted:
1) Delineations of the subwatersheds contributing runoff
from off -site and
proposed and existing subwatersheds on -site
2} Location, alignment, and elevation of proposed and
> existing stormwater
facilities
3) Delineation of existing on -site wetlands, shoreland
> and/or floodplain
areas
4) Existing and proposed site contour elevations related to
NGVD, 1929
datum
5) Construction plans and specifications of all stormwater
management
facilities
a
5} Stormwater runoff volume and rate analyses for existing
and proposed
conditions
7) All hydrologic and hydraulic computations completed to
> design the
proposed stormwater quality management facilities
>
In general, the VBWD rules require that the peak rate of
> stormwater
>
discharge cannot increase in proposed conditions for the 2 -,
> 10-, and
>
100 -year storm events. Regional ponds can be used to
> conform to this rule;
>
however, no increases in stormwater rates can occur at
> community
>
boundaries.
>
For this subwatershed, the VBWD rules also require a
> permanent pool
(dead
>
storage) volume below the principal spillway (normal outlet)
> to be greater
>
than or equal to the runoff from a 1.5 -inch 24 -hour storm
> over the entire
>
contributing drainage area assuming full development.
> Perhaps the 12.0
0)
>
acre -feet of storage mt-viitioned in the memorandum more than
> meets this
>
requirement.
>
In order to complete your analysis and the unpermitted
> construction
>
activities at the pond, you most likely have all the above
> information
>
within your files. Please submit the information for VBWD to
> review.
The last paragraph of Mr. Peters and Mr. Swenson's
> memorandum
discusses the
>
Oak Park Heights 1995 Surface Water Management Plan. As far
> as I know, the
>
VBWD has not received or approved the plan. Please send us
> a copy.
As a reminder, any work within wetlands, including the
> mentioned proposed
>
outlet construction, should be reviewed by the LGU, BWSR,
> Washington SWCD,
>
DNR, and the USAGE.
>
I can be reached at 651-748-4230 tomorrow. I would like to
> bring the
>
W.A.T.E. Addition permit before the VBWD Board of Managers
> tomorrow night,
>
but I would feel uncomfortable doing so with reviewing the
> above requested
>
information.
Thank you.
John
John P. Hanson, P.E.
Barr Engineering company
4700 West 77th Street
Minneapolis, MN 554354803
952.832.2622 (voice)
952.832.2601 (fax)
651.748.4230 (Barr's Valley Branch Watershed District
Project office)
jhanson@barr.com
http://www.barr-com
>
>>> "Postler, Dennis M." <d postler bonestroo. com> 05124 4:41
> PM >>>
>
We have analyzed the impacts of the proposed W.A.T. E.
> Enterprises
>
development within the Kern center and its effects on the
> existing Kern
>
Center Pond. Attached please find a report analyzing the
> existing Kern
>
Center pond's normal and high water levels assuming this
> development in
>
place. If you have any questions, please contact me at the
> number below,
>
or
>
Mr. Erik Peters of our office at (651) 504 -4756. Thank you.
>
3
< <Kern Pond Review o- 24- 2000.doc >>
Dennis M. Postler
Bonestroo, Rosene, Anderlik & Associates
2335 West Highway 35, St. Paul, MIN 55113
Direct: (651) 604 -4815
Office: (651) 636 -4600, x4815
Fax: (651) 636 -1311
E -mail: dpostler@bonestroo.com
4