HomeMy WebLinkAboutWPO202000026 Review Comments Erosion Control Plan 2020-07-02COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
Project:
Project file#:
Plan preparer:
Owner or rep.:
Plan received date:
(Rev. 1)
(Rev. 2)
(Rev. 3)
Date of comments:
(Rev. 1)
(Rev. 2)
(Rev. 3)
Reviewer:
VESCP Permit Plan Review
Yancey Farm Pad 2 — VESCP
WP02020-00026
Logan O'Day — Roudabush, Gale, & Assoc., Inc. / Engineering
172 South Pantops Drive, Suite A, Charlottesville, VA 22911
[ loday(a)roudabush.com ]
Charles Ernest Yancey / 6557 Dick Woods Road, Charlottesville, VA 22903
23 Apr 2020
2 Jun 2020
26 Jun 2020
2 Jul 2020
18 May 2020
12 Jun 2020
27 Jun 2020
2 Jul 2020 — Approved
John Anderson
County Code section 17-410 and Virginia Code §62.1-44.15:34 requires the VSMP authority to act on any
NISN4P VESCP permit by issuing a project approval or denial. This project is approved.
A. Stormwater Pollution Prevention Plan (SWPPP) — (Rev. 2) Revised SWPPP received 6/26/2020
11:24 AM is deficient and fails to adequately consider prior review comments, which is problematic. (Rev.
3) Prior review comments addressed. SWPPP (SWP3,) is approved.
The SWPPP content requirements can be found in County Code section 17-405. A SWPPP must contain
(1) a PPP, (2) an ESOP, (3) a SWMP, and (4) any TMDL measures necessary.
1. Provide SWPPP, given potential for erosion. Use Albemarle county SWPPP template. Link:
hLtp://www.albemarle.org/upload/images/forms center/departments/Community_ Development/forms/Engi
neerim4 and_WPO Forms/Stormwater Pollution Prevention Plan SWPPP template.pdf (Rev. 2) Revise
SWPPP to include Sec. 11 and Sec. 12 content (VAR10 permit /inspection forms).
(Rev. 1,1) As follow-up:
a. Revise title to include reference to WP0202000026. (Rev. 2) Addressed.
b. Complete VPDES CGP Registration Statement, link to form [link removed w/ Rev. 2 comments]
(Rev. 2) Partially addressed. As follow-up: Relocate Registration Statement from Sec. 11 of
SWPPP to Sec. 1.
c. Registration Form: Indicate land disturbance has commenced, if it has. Item Section V.C. (Rev.
2) Addressed. Land disturbance commenced prior to plan approval. As follow-up: Revise Sec.
IV.B., Registration Form (project dates) to reflect accurate, actual date land disturbance began.
d. Sec. 3, SWPPP, Nature of Activity: Item 2.a. makes reference to `active trenching operations.'
VESCP plan does not indicate trenching. Please revise SWPPP or plan for consistency. (Rev. 2)
Partially addressed. As follow-up: Include reference to import of fill material. Sec. 3 Nature of
activity is somewhat misleading. Revise for transparent reference to multiple purposes, to include
stated purpose and explicit reference to off -site import of fill material. Note: Fill activity is
subject to 18-5.1.28 requirements. Stated purpose: `This project proposes to grade approximately 3
acres of pasture on agricultural land to provide ease of access for livestock and equipment.
Following grading operations, the land will be seeded and allowed to return to pasture.' Note:
Engineering Review Comments
Page 2 of 4
Were this a complete, accurate description (with no off -site material import), the project would not
require a VESCP permit under 18-5.1.28.
e. Sec. 4, Erosion and Sediment Control Plan: Include revised VESCP plan, once comments
addressed. (Rev. 2) Persists. Asefollow-up: With Rev. 3, please update SWPPP to include I I" x
17" ESC Plan sheet inserts.
f. Sec. 6, Pollution Prevention Plan: Recommend provide I I" x 17" exhibit v. full-size PPP plan.
(Rev. 2) Withdrawn. Note: Once VESCP plan is approved, copies of SWPPP and full-size PPP
Exhibit, if full-size retained, must be on -site at all times. Engineering continues to recommend
I I" x 17" PPP Exhibit and with future project submittals will insist on this requirement. A full-
size PPP is problematic, is more likely to become separated, lost, etc. than I I" x 17" PPP exhibit.
g. Sec. 7, Discharges to Impaired Waters: please complete. DEQ reference links: (Rev. 2) Partially
addressed. As follow-up: Make explicit reference to inspection frequency (ref. VAR10 Part I
B.4.a.); site is located upstream of impaired waters.
Note: Dollins Creek is tributary to Stockton Creek, which needs a clean-up plan (p. 25 /DEQ
report)
i. Water quality assessment integrated report,
https://www.deg.vir ig•nia.,aov/programs/Water/WaterQualityInformationTMDLs/WaterQ
ualityAssessments/2018305(b)303(d)Integ_ratedReport.aspx
ii. List of impaired waters needing clean-up plans (88 pg. report),
https://www.deg.vir ig•nia.,aov/Portals/O/DEQ/Water/WaterQualityAssessments/Inte rg ated
Report/2018/irl 8_Appendix 1 a_Categ_ory5_List.pdf
iii. List of impaired waters not needing cleanup plans (112 pg. report)
https://www.deg.vir ig•nia.,aov/Portals/O/DEQ/Water/WaterQuali!yAssessments/Inte rg ated
Report/2018/ir l 8_Appendix 1 a_Category5_List.pdf
h. Sec. 8: Qualified personnel: List a named individual qualified to perform SWPPP inspections.
(Rev. 2) Not addressed. It is unacceptable to submit a SWPPP without listing a named individual
responsible for SWPPP inspections for an active fill operation. Please address. At a minimum,
list an individual with an active VA RLD certification.
i. Sec. 9, Signed Certification: sign certification. (Rev. 2) Addressed.
j. Sec. 11, (Rev. 2 /New) Include 26-p 2019 VAR10 permit. Also, relocate SWPPP Sec. 1 from Sec.
11 to Sec. 1 of the SWPPP.
Link:
http://www.albemarle.or2/unload/images/forms center/departments/Community_ Development/for
ms/En inin.�g_and_WPO_Forms/CGP_2019.pdf
k. Sec. 12, (Rev. 2 / New) Provide /include SWPPP inspection forms.
B. Pollution Prevention Plan (PPP) — See above. (Rev. 1) Partially addressed. As follow-up: Revise per
ESC Plan review comments, and perfollow-up items (c.-f.), below. (Rev. 2) Partially addressed. As
follow-up: Revise per ESC Plan review comments and perfollow-up items (cd ), below.
The PPP content requirements can be found in County Code section 17-404. (Rev. 3) PPP is approved.
[Prior review comments addressed or withdrawn. ]
1. Please ensure PPP Exhibit identifies:
a. Rain gauge. (Rev. 1) Addressed. (Rev. 1) Addressed.
b. Construction entrance that drains to a trapping measure. (Rev. 1) Addressed.
As follow-up
c. If Ex. Path (existing path through field) is stone, no revision requested; if path is soil/earth,
provide stone construction entrance (CE) adjacent Dick Woods Road. (Rev. 2) Comment
persists. Note: CE should be located immediately adjacent to SR 637 /Dick Woods Road.
Location well inside a field - fill site with distance to cross between SR 637 and CE via existing
path (soil? stone?) is unconventional. Revise location of CE (or add CE) to meet VESCH
requirements. (Rev. 3) Withdrawn, review error. Addressed with 6/19/2020 plan received 26-
Jun. VESCH CRS symbol clearly indicates construction road stabilization between CE internal to
site and Dick Woods Road. Regret review error.
Engineering Review Comments
Page 3 of 4
d. Certification Statement, please Note: Redline Drawings are not Construction Record Drawings.
Construction Record drawings /As -built drawings are not required by county for this project.
e. Add WPO202000026 to PPP title. (Rev. 2) Addressed.
f. Label Dick Woods Road. (Rev. 2) Addressed.
C. Stormwater Management Plan (SWMP) — NA: VESCP only
D. Erosion and Sediment Control Plan (ESCP) — (Rev. 1, 2, 3) If text is grayscale, comment is addressed.
Virtually all comments addressed. Please note request for revisions at items 20, 21, 22.
Virginia Code §62.1-44.15:55 requires the VESCP authority to approve or disapprove an ESCP. This plan
is approved.
Sheet 1
2. Revise sheet index to list sheet 4 as Phase II.
3. Revise plan title to include ref. to WPO2020-00026.
4. Include title sheet Note that the fill activity is subject to 18-5.1.28.
5. Include Note that the land disturbance activity is subject to 17-300 (VESCP).
6. Include Note that Engineering has determined the activity is not subject to 17-302 (VSMP).
7. An ESC Plan bond is required. Please submit bond estimate request form at earliest convenience. (Rev. 1,
2) Persists. Applicant: `An ESC Plan bond estimate request will be submitted upon tentative plan
approval'. Link:
hLtp://www.albemarle.org/unload/images/forms center/departments/Community Development/forms/bonds/Bond RM
uest_to Establish a Bond.pdf
Sheet 3
8. Silt fence bars entry to fill site; provide break in SF so haul trucks may enter.
9. Similarly, provide break in silt fence at base of 18' sediment trap weir.
10. Provide site -specific sediment trap profile. This is a substantial sediment trap. VESCH typical /generic
detail (sheet 6) is inadequate. (Rev. 1) Applicant: `The revised plan includes two sediment traps that have
been simplified to rectangular shapes. The standard detail provided in the notes and details sheets should
now be sufficient for construction of both sediment traps.' Also, please seefollow-up at item 20.
11. Where proposed grade ties to existing grade, there are new permanent channels. Evaluate channel capacity
/velocity against 2-, 10-yr events, respectively. Evaluate permanent channels for erosion. Provide /specify
stabilization matting /blanket, if needed, for permanent channels created by proposed final grade. (
:w rto; below [ images removed with Rev. 1 comments.] )
53:
4
12. Acquire temporary off -site construction easement, TMP 71-21, if needed. (Rev. 1) NA Applicant response
(6/l/20 letter): The site has been shifted to the north to avoid impact on TMP 71-21 so that no construction
easement should be necessary.
13. Revise design (as needed) to ensure no off -site erosive impact, or construction impact to TMP 71-21,
unless easement acquired to allow off -site construction. Runoff may not impact adjacent
parcels. Evaluate. Furnish calculations. (Rev. 1) NA Applicant response: `The proposed grading has been
shifted to the north and no longer proposes any grading on areas that drain to TMP 71-2L'
14. Provide channel cross -sections for permanent channels (north / south) created by proposed final grade,
sheet 4.
Sheet 4
15. Phase II diversion dike (DD) is impermissible as a permanent measure (it is a temporary ESC
measure). Provide, instead, a permanent grass -lined or stabilized channel capable of withstanding 2-yr
event runoff, capable of containing 10-yr event volume.
Engineering Review Comments
Page 4 of 4
16. Certain sections of SF in Phase II lie upslope of final graded -disturbed areas, and are not strictly needed
(comment applies to sheet 3, as well).
17. Revise legend to include WR. Do not recognize this symbol in the VESCH.
18. Sheet 5: Few if any references to Stormwater Management on this sheet are necessary; majority of
references may be removed. Also, item 5, above.
19. Include code text at 18-5.1.28, Borrow, fill or waste areas (below [18-5.1.28 text removed with Rev. 1
comments), on the plans (except 18-5.1.28.b.6., since an Erosion and Sediment Control plan is required).
Ensure text is readable. Link to text:
https:Hlibrary.municode.com/va/albemarle_county/codes/code_of ordinances?nodeld=COALCOVI_CH18Z0_S5SUR
E S5.ISURE S5.1.28BOFIWAAR
New
20. Sheet 3: Although ST1 and ST2 Calculation tables list base dimensions, please label floor dimensions in
plan view to aid construction inspection. (Rev. 2) Addressed.
21. Revise grades (sheet 3, 4, 5) to show a gradual transition to 3:1 slopes. Proposed transition is 12.5:1 to 3:1,
abruptly. Include a gradual, curved transition to 3:1 to mimic natural land features. Engineering will not
approve flat -to -steep (12.5:1-to-3:1) sudden transition in rural areas. 3:1 slopes are permissible, but revise
to show smooth curved transition. We recommend plan notes capture design intent. Ref imago be [
image removed with Rev. 2 comments. ] (Rev. 2) Addressed.
22. Label Dick Woods Road. (Rev. 2) Addressed.
The VESCP permit application and all plans may be resubmitted for approval when all comments have been
satisfactorily addressed. For re -submittals please provide 2 copies of the complete permit package with a completed
application form.
Process:
After approval, plan will have 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 have to be completed by the owner and submitted along with cash,
certificates or sureties for the amounts specified. The agreements will have 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.
If any easements are required, then after easement plat is recorded, the County can hold a pre -construction
conference. Applicants must complete the request for a pre -construction conference form, and pay the remainder of
the application fee (if any). The form identifies the contractor and responsible land disturber, and 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 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;
hLtp://www.albemarle.org/deptforms.asp?department--cdengmTo
WP0202000026 Yancey Farm Pad 2 070220rev3