HomeMy WebLinkAboutWPO201900027 Review Comments WPO VSMP 2022-10-17� AI
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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
VSMP Permit plan review
Project title: Pleasant Green Connector Road
Project file number: WP0201900027
Plan preparer:
Collins Engineering [scoff@collins-engineering.com]
Owner or rep.:
SM Charlottesville LLC
Plan received date:
15 April 2019
Rev. 1 received:
08 Oct 2020
Rev. 2 received:
14 Dec 2020
Rev. 3 received:
01 Feb 2021
Rev. 4 received:
21 Sept 2022
Date of comments:
14 May 2019
Rev. 1 comments:
05 Nov. 2020
Rev. 2 comments:
20 Jan 2020
Rev. 3 comments:
12 Mar 2021
Rev. 4 comments:
17 Oct 2022
Reviewers:
Emily Cox
County Code section 17-410 and Virginia Code §62.1-44.15:34 requires the VSMP authority to
act on any VSMP permit by issuing a project approval or denial. This project is denied. The
rationale is given in the comments below. The application may be resubmitted for approval if all
of the items below are satisfactorily addressed. The VSMP application content requirements can
be found in County Code section 17-401.
A. Stormwater Pollution Prevention Plan (SWPPP)
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. SWPPP was not provided with this submission. Please provide a SWPPP with all requirements.
The County suggests the submission of a 2014 and 2019 DEQ registration statement in the
SWPPP. Rev. 1: SWPPP or updated registration statement and coverage map must be
provided. Rev. 2: Comment addressed. Please provide a complete new SWPPP with the
most recent signed registration statement and the overall coverage map. Rev. 3: Comment
addressed.
2. Please check NO in section III for will a separate permit cover this activity. The offsite area
is part of VAR10M834. Rev. 3: Did not check NO in this area.
area, list the contents of the excavated fill material:
Will a separate VPDES permit cover this off -site activity? I YES ❑ NO ❑
Rev. 4: Comment addressed.
3. Rev. 3: Please update the proposed start date as it has already passed. Rev. 4: Comment not
addressed. Date already passed.
4. Please get recent signatures on SWPPP registration statement and section 9. They are from
January 2021.
Engineering Review Comments
Page 2 of 5
5. Please update and clarify registration statement total areas. The current VAR permit is for
Total Area of Development (Acres) (e.g. 1.23)
43.34
Primary Area to be Disturbed (acres) (e.g. 1.23)
30.14
Offsite Est. Area to be Disturbed (acres) (e.g. 1.23)
2.36
Est. Area to be Disturbed (Total Acres) (e.g. 1.23)
32.50
6. SWPPP exhibit needs to be updated to include Phase II WPO202000053 and date it was
approved (and total disturbed area).
7. Please use current county SWPPP template:
httus://www.albemarle.or¢/home/showaublisheddocument/166/637202310327530000
Please note changes: we will now stamp plans once approved and add them to the back of
the SWPPP book. This will ensure contractor always has approved plans in SWPPP.
Also, section 9 has been updated to match DEQ language. Please ensure there is a plan view
sheet labeled as PPP in the plan set.
B. Pollution Prevention Plan (PPP)
The PPP content requirements can be found in County Code section 17-404.
1. PPP not provided with this submission. Please provide a PPP with all requirements. Rev. 1:
Comment not addressed. Rev. 2: Comment addressed.
C. Stormwater Management Plan (SWMP)
VSMP Regulation 9VAC25-870-108 requires the VSMP authority to approve or disapprove a
SWMP. This plan is disapproved, and the reasons are provided in the comments below. The
stormwater management plan content requirements can be found in County Code section 17-403.
1. How are water quality and water quantity requirements of this proposed road being addressed?
Rev. 1: Comment addressed or other comments now issued more specific to this question.
2. This road goes through a recorded SWM forest & open space easement. See attached plat,
SUB201600238. The plat must be amended before this plan can be approved. Rev. 1: Comment
not addressed. Rev. 2: Comment not addressed, but based on email, plat was submitted. Rev. 3:
This vacation plat (SUB202100006) must be recorded before this WPO Plan can be
approved. Rev. 4: Comment addressed.
3. WPO201600069 utilized the above referenced forest & open space in their VRRM spreadsheet
therefore that WPO plan must be amended to show the removed forest & open space. The plan
did have excess water quality credits, however the developer has already used them on a project
called Brookdale. Rev. 1: Comment not addressed. These have different operators, therefore
cannot be computed and revised with this project. Please see 9VAC25-870-69. The other plan
still needs an amendment. Rev. 2: Comment addressed. However, that plan amendment
(WPO201600069) must be approved before this plan can be approved. Rev. 3: Comment still
applies. Rev. 4: Nutrient credits were purchased, but plan(WPO201600069) was never
resubmitted for approval. Please include the date nutrient credits were purchased and the
DB/PG or instrument number of the recorded plat vacating the forest & open space on your
resubmitted plans/calcs.
Engineering Review Comments
Page 3 of 5
4. SDP #'s are referenced and say under review. Please remove the status as it may change by the
time this plan is approved. The plan # is enough. Also add the associated WPO #. Rev. 1:
Comment addressed.
5. A mitigation plan is refenced on the cover sheet. However, there are no details or plans for the
mitigation in this plan set. Please clarify. Rev. 1: Comments on mitigation plan listed below in
section E. Rev. 2: Comment addressed below in section E.
6. Provide all applicable permits for work in Powells Creek. (CLOMR-F, approved FDP permit and
approvals from Army Corps of Engineers, etc.) Rev. 1: Comment not addressed. Rev. 2: Corps
permit received. Please provide CLOMR-F. Rev. 3: Comment not addressed. Rev. 4:
Comment not addressed. Please provide CLOMR-F.
7. Provide the approved plan number where the design for the triple box culvert and wing walls are
located. This plan cannot be approved until that plan is approved. Rev. 1: Comment not
addressed. This design is in SUB2019000058. Rev. 2: This will be reviewed and approved
with the road plan. However, please note that you should not construct it without road plan
approval. Rev. 3: Comment acknowledged.
8. Rev. 1: Per condition #5 in SP201900002, the greenway must be dedicated before grading permit
can be issued. Rev. 2: Comment not addressed, but per email, plat has been submitted. Rev. 3:
SUB202100003 must be recorded before this plan can be approved. Rev. 4: Comment
addressed.
9. Rev. 1: Per condition 47 in SP201900002, a Phase II environmental assessment must be
completed before VSMP or final subdivision plat approval. Rev. 2: Comment addressed per
report dated 11/11/2020.
10. Rev. 1: Please provide specifications for the bioretention materials. Rev. 2: Comment
addressed.
11. Rev. 1: Please specify the outfall location that was the "point of analysis". It is unclear on
the plan. (The outfall at the creek? The bioretention outfall?) Rev. 2: Comment addressed.
12. Rev. 1: Is the ponding depth proposed to be lft? 6" is preferred unless the proposed plants
can endure IIt of water. Rev. 2: Comment addressed.
( l fzp. V cPp i ffiched letter from Megan Nedostup. This plan cannot be approved until that
Rev. 4: Comment addressed.
14. Rev 3: See comments on image below:
PLEASANT GREEN WATER QUALITY MASTER PLAN
SUMMARY OF PHOSPHOROUS REMOVAL RATE REQUIRED
Total Phosphorous Removal Rate Required for Proposed Pleasant Green Phases I, 11, III and the Connector Road 24.56 Ibs/yr
(See this plan's report & Me WPO 202000053 for the Over-all Pleasant Green Water QualRy Analysis)
Penton of Phosphorous Removal Rate Provided (By Other) for Connector Road's Impacts to SWM Forest & Open Space Esml 0.27 Ibs/yr
(See WPO 2D3600069 Amendment 91)
Total Phosphorous Removal Rate Required for the Proposed Pleasant Green 24.29 Ibs/yr
SUMMARY OF PHOSPHOROUS REMOVAL RATE PROVIDED
Approved Phase I (WPO 201900003) Phosphorous Removal Rate Achieved from Nutrient Credits
6.97 Ibs/yr
Proposed Phosphorous Removal Rate Achieved from Phases ll&III(WPO 202000053)Level ll Wet Pond Outfalling to Conservation Area (Subarea B)
7.591bs/yr
Proposed Phosphorous Removal Rate Achieved from Phases 11&III(WP0202000053) Outfall to a Vegetated Filter Strip (Subarea C)
5.07 lbs/yr
Proposed Phosphorous Removal Rate Achieved from Phases 11&111(WPO 202000053) Outfall to a Vegetated Filter Strip (SubareaD)
3.06 lbs/yr
Approved Phase I (WPO 201900003) Phosphorous Removal Rate Achieved from the Level 11 Bloretentlon Basin (Subarea E)
2.42 Ibs/yr
Proposed Phosphorous Removal Rate Achieved from Phases II & III (WPO 202000053) SW M Forest & Open Space Easement
1.59 Ibs/yr
Total Phosphorous Removal Rate Provided
Total Phosphorous Removal Rate Provided OnsBe
Percentage of the Required Phosphorous Removal Rate Treated Onsite (18.73 / 24.30 a 100)
25.7D Ibs/yr
19.73 Ibs/yr
77 %
-The 0.27 lb/ yr cannot be subtracted from the Pleasant Green requirements. Those
nutrient credits were required for the WP0201600069 Plan. Pleasant Green removed the
forest and open space and needed to replace the credits for that plan. The credits are
independent of the Pleasant Green removal requirements. The plan still appears to meet the
75% on site treatment, even with removal of that 0.27, but please show it that way.
Engineering Review Comments
Page 4 of 5
-As stated in your calculations packet, page 58, WP020200053 must be approved
before or concurrently with this plan since this analysis is counting on that plan's nutrient
removal.
Rev. 4: [Sheet 61- Comment partially addressed.
See WPO 201600069 Amendment #1 for
This note should say Amendment #2. Please update
in calculations packet as well.
D. Erosion and Sediment Control Plan (ESCP)
Virginia Code §62.1-44.15:55 requires the VESCP authority to approve or disapprove an ESCP.
This plan is approved, and the reasons are provided in the comments below. The erosion control
plan content requirements can be found in County Code section 17-402.
1. Please provide a note or plan for how to stabilize the area that was used as a stream diversion.
Rev. 1: Comment addressed.
2. Sheet 4 has a note in the top right comer that references a sanitary sewer installation. Is this a
mistake? Rev. 1: Comment addressed.
3. Sheet 5 has a note regarding slopes steeper than 3:1 that are not allowed with this plan. Please
revise the grades and remove the note. Rev. 1: Comment addressed.
4. Provide dimensions and calculations for all outlet protection shown on the plan. Rev. 1: Comment
addressed.
5. Provide drainage to the stream crossing to show it is less than 1 square mile. VESCP 3.25 is for
drainage areas less than that. Rev. 1: Comment addressed.
6. Show that type B channel lining is adequate (velocity?). Rev. 1: Comment addressed.
7. Rev. 1: Per the BMP clearinghouse practice 9, the bottom of the sediment trap should be at
least Ift above the post -construction excavation. This sediment trap bottom is 690 and the
bioretention bottom is 691.5, which is the opposite. Rev. 2: Comment addressed.
8. Rev. 1: [Sheet 31 Please review the project description in the narrative. It references this
WPO and a different acreage? It is also noted on Sheet 4. It appears it should be:
WP020190003-amendment 1. Rev. 2: Comment addressed.
9. Rev. 1: Per the VESCH, the maximum height of the sediment trap embankment is 5ft. This
appears to be 6 ft (698-692). Rev. 2: Comment addressed.
E. Mitigation Plan
1. Rev. 1: Please provide details and cross sections for 42, stream bank stabilization. Rev. 2:
Comment addressed.
2. Rev. 1: Show the area that will be planted in 44. If it is not in the buffer, it must be in an
easement. Rev. 2: Comment addressed.
3. Rev. 1: Ensure all proposed plantings are native. Rev. 2: Comment addressed.
4. Rev. 1: Provide a maintenance plan and schedule of completion for the mitigation. Rev. 2:
Comment addressed.
5. Rev. 1: Provide details, schedule/sequence and plan for removal of the concrete dam. Also,
provide applicable permissions/permits (Army Corps of Engineers). Rev. 2: Comment
addressed.
The VSMP 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.
Engineering Review Comments
Page 5 of 5
Engineering plan review staff are available from 2-4 PM on Thursdays, should you require a meeting to
discuss this review.
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.
After bonding and agreements are complete, county staff will need to enter project information in a DEQ
database for state application processing. DEQ will review the application information based on local
VSMP authority approval. At this time, the DEQ portion of the application fees will need to be paid
directly to the state. For fastest processing, this is done electronically with the emails provided on the
application. DEQ should notify applicants with instructions on how to pay fees. When DEQ approves
the application, they will issue a permit coverage letter. This should be copied to the county.
After DEQ coverage is issued, via the coverage letter, the County can hold a pre -construction conference.
Applicants will need to complete the request for a pre -construction conference 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,
bft://www.albemarle.org/deptforms.asp?departrnent--edenMo