HomeMy WebLinkAboutWPO201900045 Review Comments 2019-09-23 September 23, 2019
David James
Civil Engineer
Community Development
County of Albemarle
401 McIntire Rd.
Charlottesville,VA 22902
RE: Liberty Hall WPO201900045
David:
The following is a response to your review comments dated September 19, 2019:
C. Pollution Prevention Plan (PPP)
The PPP content requirements can be found in County Code section 17-404.
1. Show any proposed clearing/grading activities, paving operations, landscaping operations, E&S
controls, staging, stockpile, borrow, fueling, waste disposal, vehicle/equipment washing, concrete
washout locations on the PPP. Also, show locations where concentrated stormwater discharges.
(Rev.1) Show detail for concrete washout. Show silt fencing around stockpile area.
A washout detail is provided and silt fence is now shown around the stockpile.
D. Stormwater Management Plan (SWMP)
6. Complete & record the SWM Maintenance Agreement.
(Rev.1) Not addressed.
The maintenance agreement will be submitted separately.
E. Erosion and Sediment Control Plan (ESCP)
2. Please show the WPO buffer.
(Rev.1)'Not addressed.
The WPO buffers are now shown on the overall area plan.
4. Show limits of disturbance to include any clearing, grading, excavating, transporting and
filling activities.
(Rev.1) Show the perimeter controls (SF)within the limits (LOD).
A washout detail is provided and silt fence is now shown around the stockpile.
B. Clark Gathright,LLC 100 10th St NE Suite 200 Charlottesville,VA 22902 434-987-0294 cathright@dgarchs.com
6. Sheet 3—a. Controls shown are not adequate to contain site runoff. Additional controls are
needed to capture runoff(i.e. silt fence, sed. trap). Show controls mentioned on
the cover on the E&SC plan.
b. The roof drain outlet may require outlet protection if the velocity is high enough
to cause erosion.
c. A paved construction entrance is required. Locate it at the beginning of the
project. Use detail from the County's design standards manual (DSM, pg. 8).
(Rev.1) Partially addressed. Silt fence is being shown outside limits of disturbance.
Adjust to be inside.
The silt fence is now included in the LOD area. Please note that I am trying to replicate the as-built condition
in the field, where in some cases the silt fence was installed well away from any land disturbing activity.
7. Provide low maintenance (not grass)ground cover specified on the plans where grades
are steeper than 3:1. [DSM, pg. 22]
(Rev.1) Sheet 3- There's a callout to refer to landscape plan, but sheet not
provided in the plans.You can change the text to read `Groundcover on 3:1
slopes'.
The groundcover note is revised.
Should you have any questions, don't hesitate to call me.
•
Best regards,
Clark Gathright,P.E.'
B. Clark Gathright,LLC 100 10th St NE.Suite 200 Charlottesville,VA 22902 434-987-0294 cathright@dgarchs.com