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Home My WebLink AboutWPO202100063 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