HomeMy WebLinkAboutWPO202100063 Review Comments WPO VSMP 2023-02-22John Anderson
From: John Anderson
Sent: Wednesday, February 22, 2023 3:52 PM
To: 'Elizabeth Wassman'; Chris Mulligan
Cc: Charlie Armstrong; 'Keith Lancaster'; 'Max Lamm'; 'Alexander Flint'
Subject: WP0202100063 - RE: Dunlora WPO Tree Clearing Only Plan
Liz,
2 review items for SWPPP:
1. pg. 23, PPP Exhibit: Please show /label vehicle wash station location at intersection with existing public road/s
since that is where logging trucks must be rinsed free of mud/gravel before entering public streets.
2. Please include WP0202100063 on SWPPP cover.
In every other respect, perfect. SWPPP template and information are accurate and easy to review. We appreciate it very
much.
If RGA makes these slight SWPPP changes, and sends WPO plan + SWPPP via link once revised, we can combine
approved plan (Sec. 13 of SWPPP) with SWPPP, mark SWPPP approved, provide link to approved SWPPP /approved
plan, and upload to CV. We should be able to do that on the day received, tomorrow or Friday. Thanks, well done, Liz.
Chris,
I recall you have travel plans —what is target date for RGA to submit WP0202100063 Amendment # 1? It barely lets up,
but this is the goal, we understand: to approve Amendment # 1 to allow grading. Amendment # 1 requires fully -developed
SWM plan, calcs., etc., but SWM /public drainage easements may be pushed to first final subdivision plat. An increase in
bond is required with Amendment # 1. I will try to turn to Amendment #1 within days of receipt. And we'll get
there. Thanks, Chris —enjoy time away. I'll try to do my part, in the meantime. Very well done. best, J. Anderson
John E. Anderson, PE I Civil Engineer 11
Department of Community Development I County of Albemarle, Virginia
401 McIntire Road I Charlottesville, VA 22902
434.296.5832 ext. 3069
From: John Anderson
Sent: Wednesday, February 22, 2023 11:25 AM
To: Elizabeth Wassman <EWassman@roudabush.com>
Cc: Chris Mulligan <CMulligan@roudabush.com>; Charlie Armstrong <CharlesA@southern-development.com>; Keith
Lancaster <klancaster@southern-development.com>; Max Lamm <mlamm@roudabush.com>; Alexander Flint
<AFlint@roudabush.com>
Subject: RE: Dunlora WPO Tree Clearing Only Plan
Hi, All,
I still need to review the SWPPP, and will at Ipm.
Till then, please revise per yesterday's email, and also:
1. Sheet 3, Note 12: Delete STATE ESC
12. PRESERVED STEEP SLOPES (>25%) TO BE MARKED IN THE
FIELD BY STATE ESC CONTRACTOR PRIOR TO LAND
DISTURBANCE.
2. Revise sheet 3 label to read `Apply mulch 50' wide ground cover upslope of TP, and wherever trees are
harvested.'
- BELVEDERE 5B GRADING &
EROSION CONTROL (FLATTEN
SLOPE GRADES TO ESTABLISH MU
CONTRUCTION ROAD
STABILIZATION
IEXISTING ROAD
\ / EXISTING ROAD
' ESMT.
I R APPLY MULCH, 50' WIDE
GROUND COVER
UPSLOPE OF TP.
(AMU
3. Revise Sheet 3, Note 2: Replace recommends with requires.
2. ALBEMARLE RECOMMENDS MULCH COVER FROM CHIPPING
LIMBS ON -SITE FOR ANYAREA LOGGED AND REC}UIRES
MULCH GROUND COVER FOR 50' (MIN.) WIDTH UPSLOPE OF
ANY TREE PROTECTION FENCING AND UPSLOPE OF ANY LIMIT
OF TREE-CLFARI NG.
4. Items 2 and 3, above (with items discussed in 2/17 email, below) should bring tree -removal WPO plan into
compliance with state stormwater water quantity requirements ( 9VAC25-870-66.D.) — see item 6.
5. Revise sheet 5 VRRM.xls to include 0.5 Ac. post-dev land cover impervious Area, for stone logging /haul road.
This 0.87 lb. increase in phosphorus reduction from 1.02 lb. to 1.89 lb. is recovered with Amendment # 1, will
require at least 1.89 lb. The risk is liability vis-a-vis DEQ, should agency inspect and find impervious stone
road. Thank you!
6. Email sent February 17, 2023 12.28 PM, text:
INCLUDE SWM items on WPO plan
Alexander, thanks for your call. It was important. I spoke with Frank who made an important point. As follow-up to
email sent yesterday, re. mulch:
1. Wherever trees are cleared requires mulch.
2. Mulch allows quantity calc. to ref. NRCS TR-55 Manual Table 2-2c runoff curve numbers for brush v. woods HSG
B, good condition.
3. Engineering anticipates sheet 3 of Dunlora tree removal only plan to include linework, notes, etc. requiring
mulch wherever trees are removed.
If areas are cut but not mulched, a different value from Table 2-2c might indicate post -tree removal CN number
>_ forested value (55).
4. 5WM quantity calc. depends on CN post -removal value across areas cleared of trees < forested CN value ( for
example, 48 < 55).
5. Then, as discussed, we anticipate ref. to 9VAC25-870-66.D., with statement to the effect that removing trees
accompanied by mulch in all areas cleared yields empirical post -removal runoff value <forested runoff.
( If no increased volume of sheet flow, 9VAC25-870-66.D. characterization is valid.)
Thanks for thoughtful questions and careful design approach, Alexander.
Table 2.2C Runoff Curve numbers for otheraocultural lands
aaaaaaaaaaa�
Curve numbers for
Cover description hydrologic soil group —
Hydrologic
Cover type condition A B C
Pasture, grassland, or range —continuous
Poor
68
79 86
forage for grazing. v
Fair
49
69 79
Good
39
61 74
bleadow�ontmuous grass, protected from
30
58 71
grazing and generally mowed for hay.
Brush—brush-weed-grassmixture with brush
Poor
46
67 77
the major element. 3'
Fair
35
56 70
Good
30 v
48 65
Woods —grass combination (orchard
Poor
57
73 82
or tree farm). &
Fair
43
65 76
Good
32
58 72
Woods.'
Poor
45
66 77
Fair
36
60 73
Good
3041
56 70
Farmsteads —buildings, lanes, driveways,
—
59
74 82
and surrounding lots.
Liz, thanks for joining the call to discuss the SWPPP. We appreciate everyone's hard work on this.
Take care, best, J. Anderson
From: John Anderson
Sent: Tuesday, February 21, 2023 5:24 PM
To: Elizabeth Wassman <EWassman@roudabush.com>
Cc: Chris Mulligan <CMulligan@roudabush.com>; Charlie Armstrong <CharlesA@southern-development.com>; Keith
Lancaster <klancaster@southern-development.com>; Max Lamm <mlamm@roudabush.com>
Subject: RE: Dunlora WPO Tree Clearing Only Plan
Liz, Chris,
Not quite finished review, but let's list ledger Inst# on sheet 5, and clarify 3.0 lb. credits transferred to this project, today.
9
RECORDEDIN
ALBEMARLE COUNTY, VA
JON R. ZUG
FILED Fab 21, 2023
AT 03:53 pm
BOOK
START PAGE
END PAGE
INST # 202300001354
TOTAL NUM PAGES 2
Also, pls. see attached. We need SWM quantity ( narrative) information on the plan. Then, we should be very close.
Excellent work, email to follow tomorrow—pls. review attached. Attached requires slight revision ( text /labels).
All of you, thank you!
best, J. Anderson
From: Elizabeth Wassman <EWassman@roudabush.com>
Sent: Monday, February 20, 2023 1:17 PM
To: John Anderson <0anderson2@albemarle.org>
Cc: Chris Mulligan <CMulligan@roudabush.com>; Charlie Armstrong <CharlesA@southern-development.com>; Keith
Lancaster <klancaster@southern-development.com>; Max Lamm <mlamm@roudabush.com>
Subject: Dunlora WPO Tree Clearing Only Plan
Good afternoon, John!
I hope you're enjoying your day!
I've attached a link to our file folder with all the necessary documents for your review of the Dunlora Village
WPO. Within the folder, we have:
1. Revised WPO Clearing Plan
2. Comment Response Letter
3. SWPPP Documents
4. Signed CGP (Within SWPPP document)
5. PPP Plan
I am hoping to submit a physical copy at COB today, or tomorrow morning. Thank you so much, and I look forward to
hearing from you!
Liz Wassman
Roudabush, Gale & Associates
https://files.roudabush.com:5001/sharing/P7E 1sDEcG