HomeMy WebLinkAboutZMA201300012 Review Comments Zoning Map Amendment 2013-08-22Phone 434-296-5832
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�IRGIS
County of Albemarle
Department of Community Development
401 McIntire Road,
Charlottesville, VA, 22902
Memorandum
Fax 434-972-4126
To:
Megan Yaniglos
From:
Michelle Roberge, Engineering Department
Division:
Engineering
Date:
August 22, 2013
Subject:
ZMA 2013-00012 Rivanna Village
I have reviewed the concept plan for the application noted above and offer the following comments for the
applicant. The comments are those that have been identified at this time. Additional comments may be added
or eliminated based on further review.
1) Please clarify whether roads are public or private.
2) Per VDOT standards, please note that a minimum horizontal curve of 200' is required. I recommend
providing an outer radius to avoid the sharp 90 degree turns on the unnamed alley and Terrapin Circle.
There are 90 degree turns on both ends of Park St. as well. Please clarify since it appears the roads are
not shown correctly to reflect the T intersection.
3) In (2) locations the access from the frontage road is not clear. Please clarify for the corner lot on Main St
and Sweetgum Lane and the lot on Terrapin Circle near the sharp bend.
4) Per Section 14-409(B), "All public streets within a subdivision shall be extended and constructed to the
abutting property lines to provide vehicular and pedestrian interconnections to future development..." I
recommend showing this on plans.
5) It appears there will be disturbance within the 100' stream buffer. Please show the 100' stream buffer on
plans and provide a conceptual plan for the type of mitigation. Please see the attached sheet. Full build-
out shows some blocks have minimal space for mitigation. Reforestation may not be an adequate
solution. A combination of stream restoration and reforestation may be necessary to satisfy mitigation
requirements.
6) It is not clear if this subdivision is a phased development. Please note that all roads will need to be
bonded prior to a grading permit if project is not phased. If it is a phased development, I recommend
providing a plan which shows the limits of each phase.
7) The concept for placing stormwater management facilities within each block is favorable due to the
rolling topography and several streams on site. However, there are several areas that are left untreated.
recommend placing facilities where more runoff can be captured and treated instead of narrow spaces
behind lots, where it will be very difficult to access and maintain. Also, the proposed wet ponds and
wetlands on blocks D and G will not work since it requires, at a minimum, 10 acres of watershed
drainage area. Please see the attached mark up.
8) 1 recommend a COE permit to be obtained prior to the approval of this ZMA application.
9) One stormwater management facility is shown on County property, where the fire station is located. I
recommend all proposed stormwater management facilities to be on site.
10) 1 do not see the need to separate out wet pond 2 into (3) basins. I recommend only showing one basin.
11) Please label each stormwater management facility with its own unique number and type for reference.
Wet swale 1 and wetland 1 were used multiple of times. It will be easier to locate on plans without
having to figure out blocks first, then the type of facility.
12) For drainage area E2, please provide other measures to treat runoff. Downspout disconnects and tree
boxes are not adequate.
13) There are impacts to traffic with this development. Most of the recommendations from the traffic study
have been addressed except for two items. I recommend adding an eastbound right turn lane with 200'
storage lane and 200' taper on the second entrance, furthest east, off of Richmond Road. I also
recommend the northbound right taper at the intersection of Glenmore Way and first entrance.
14) The traffic study does not assume a phased development. I recommend that all entrances shown on
the traffic study are constructed and fully operational at the initial phase of the project.
Please contact Michelle Roberge in the Engineering Dept at mroberge(Qalbemarle.org or 434-296-5832 ext.
3458 for further information.
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