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COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
Project:
Rocky Hollow /Tuerk Stable (Amends WP0201400075NSMP)
Project File Number:
WP0201500056
Plan preparer:
Rob Cummings, Kirk Hughes & Associates -220 E. High St., Charlottesville,
VA 22902 [rob@khals.netl ; Tommy Dobson tommydobson73(&gmail.com
Owner or rep.:
Adriana K. Tuerk, Trustee of the Adriana K. Tuerk Living Trust -P.O. Box 85,
Isla, FL 33036
Karen Tuerk -2684 Paddock Wood Rd, Keswick, VA 22947 [ktuerk(a),aol.com]
Plan received date:
20 Aug 2015
Date of comments:
10 Sep 2015
Reviewer:
John Anderson
Please ref. email: J. Anderson to Rob Cummings (7/24/2015 1:02 PM; 7/13/2015 6:15 PM)
A. Stormwater Pollution Prevention Plan
The SWPPP content requirements can be found in County Code section 17 -405. A SWPPP must contain (1)
a PPP, (2) an ESCP, (3) a SWMP, and (4) any TMDL measures necessary.
1. Furnish SWPPP/PPP —17 -p. county template attached to 7/24 email
B. VSMP: SWPPP: Stormwater Management Plan (WP0201500056)
VSMP Regulation 9VAC25- 870 -108 requires the VSMP authority to approve or disapprove a SWMP. This
plan is disapproved for reasons provided in comments below. The stormwater management plan content
requirements can be found in County Code section 17 -403.
1. Ref. email / Meetings discussing VSMP Application requirements.
2. Provide stand -alone SWM Plan sheet (or sheets), data, information, to include:
a. Pre- /post-development drainage areas. Show drainage divide. Show DA `A' (1.05 Ac) and `B'
(1.04 Ac) consistent with VaRRM .xls Site Results print -out that accompanied Application.
b. Transfer VaRRM .xls (VA Runoff Reduction Method spreadsheet) site data, DA -A, DA -B, and
water quality compliance details to the SWM plan. Alternatively, email VaRRM .xls to reviewer
at: janderson2galbemarle.org
c. Energy balance equation: show compliance with state stormwater post - developed water quantity
requirements [9VAC25- 870- 66.B.3.].
d. Routing calculations, if necessary, to show compliance with 9VAC25- 870 -66. [pre- /post- Q2 /Q101
e. Provide SWM design (bioretention, or other). Sheet C3 shows bioretention basin level II design
typical detail from BMP Clearinghouse, but there is no specific bioretention design data with this
application. Provide basin surface area dimensions, volume, depth of media, etc. Please ref. BMP
Clearinghouse Design Specification No. 9, Table 9.3, bioretention basin and filter design criteria.
Although .xls site data tab reports 1.25 total phosphorus load reduction required and site results
indicate design exceeds the target by 0.6 lb /yr, we need drainage area tabs for `A' and `B' that
quantify impervious and turf areas that receive treatment, and method of treatment (BMP).
Engineering Review Comments
Page 2 of 3
f. Transfer construction/installation and maintenance specifications from DEQ BMP Clearinghouse
to plans to guide construction and inspection. [VA DEQ Stormwater Design Specifications]
g. Provide permanent SWM facility easements, to allow county access /inspection in the future.
h. Provide permanent access to SWM facility (10' w, min; 20% grade, max).
i. If permanent pool is considered with SWM design, consider safety (provide fence or railing for
slopes steeper than 3:1).
C. VSMP: SWPPP: Erosion Control Plan (WPO201500056)
Virginia Code §62.1- 44.15:55 requires the VESCP authority to approve or disapprove an ESCP. This plan is
disapproved for reasons provided in comments below. The erosion control plan content requirements can be found in
County Code section 17 -402.
Sheet C2
1. Report Limits of Disturbance, Acres.
2. Label stable drive width/material surface. Label (drive) circle diameter /material surface.
3. Report building SF (impervious area).
4. Report impervious cover areas for driveway and stable; report total impervious area.
5. ST -2 exceeds Max. 4' excavated depth. Revise.
6. Show and avoid critical slopes (brownish orange /image below):
Note: Impact to critical slopes requires waiver approval. Waivers are coordinated with Planning
Division, with provisions specified at Albemarle County Code Section 18- 4.2.5. It appears from
C2 that grading and proposed stable driveway would impact critical slopes. Yslopes are proposed
to be altered, Applicant should contact Planning to discuss waiver request requirements.
Provided that proposed contours avoid critical slopes, slopes steeper than 3:1 require vegetative
stabilization hardier the grass. [ACDSM 8.A.2.] Proposed contours north of drive are 2:1.
Propose permanent stabilization other than grass for slopes > 3:1.
Provide an adequate number of proposed contour /elevation labels to aid review and construction.
D. VSMP: Mitigation Plan -NA
The mitigation plan requirements can be found in County Code section 17 -406.
Design avoids stream buffer.
Engineering Review Comments
Page 3 of 3
Engineering plan review staff are available from 2 -4 PM on Thursdays, should you require a meeting to discuss this
review. Plan review staff are also available at 434 - 296 -5832 (- x3069) should you have questions.
Process:
After approval, plans will need to be bonded. The bonding process is begun by submitting a bond estimate request
form and fee to the Department of Community Development. One of the plan reviewers will prepare estimates and
check parcel and easement information based on the approved plans. The County's Management Analyst will
prepare bond agreement forms, which will need to be completed by the owner and submitted along with cash,
certificates or sureties for the amounts specified. The agreements will need to be approved and signed by the County
Attorney and County Engineer. This may take 2 -4 weeks to obtain all the correct signatures and forms.
Stormwater Management Facilities Maintenance agreements will also need to be completed and recorded. The
County's Management Analyst or other staff will prepare the forms and check for ownership and signature
information. The completed forms will need to be submitted along with court recording fees.
Project will operate under General VPDES Permit VAR10G570, to be amended. Albemarle County will notify
DEQ/Richmond of increased Area estimated to be disturbed.
Once bond/Agreement processes are complete, the County can hold a pre - construction conference. Applicants will
need to request a pre - construction conference by completing a form, and pay the remainder of the application fee.
The form identifies the contractor and responsible land disturber, and the fee remaining to be paid. This will be
checked by county staff, and upon approval, a pre - construction conference will be scheduled with the County
inspector. At the pre - construction conference, should everything proceed satisfactorily, a joint VSMP and grading
permit will be issued by the County so that work may begin.
County forms can be found on the county website forms center under engineering;
httj2://www.albemarle.org/deptforms.asp?departinent=cdengMTo
WP0201400056 —Rocky Hollow_Tuerk Stable-091015