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Home My WebLink AboutSDP201500026 Correspondence Minor Amendment 2015-07-08 Co LL I NS Nose 00 GARRETT ST, SUITE K CHARLOTTESVILLE VA 22902 434.293.3719 PH 434.293.2813 FX www.collins-engineering.com July 8, 2015 Jonathan Newberry County of Albemarle Department of Community Development 401 McIntire Road Charlottesville, VA 22902 RE: SUB-2015-00026—Avinity 1, Phase IV—Minor Site Plan Amendment Dear Jonathan: Please allow this letter to serve as confirmation that the changes proposed with SUB-2015-00026 Avinity I, Phase IV—Minor Site Plan Amendment represent a trivial change from the approved WPO-2013-00044 and do not require modification to the approved WPO/SWM plan. The stormwater management Phase I Retention Basin facility approved with WPO-2013-00044 was designed to treat the approved Avinity I development, and provided water quality volume in excess of the minimum required. The proposed minor site plan amendment includes minor grading adjustments approaching the facility, which do not impact the facility volumes or design characteristics. The proposed amendment roadway connection and substitution of the approved condominiums for the proposed townhouses constitutes an 11,250 sf net increase in impervious area, which does not necessitate changes to the approved facility. The approved WPO-2013-00044 stormwater management facility was designed to include a surplus water quality volume credit of 1,882 cf (38,611 cf WQV provided—36,729 cf WQV required). An impervious area increase of 11,250 sf is equivalent to a 1,875 cf increase in required water quality volume for the Retention Basin at 65%removal. The increase in water quality volume required by this amendment is exceeded by the existing Phase I Retention Basin surplus water quality volume credit, where 1,882 cf existing excess volume provided> 1,875 cf volume required. (0.5 in*(lft/12in)*11,250 sf=469 cf 469 cf x 4 = 1,875 cf 65%removal =WQVx4) The aforementioned calculations demonstrate that the additional impervious area generated with the SUB-2015-00026 Avinity I, Phase IV —Minor Site Plan Amendment has previously been accounted for in the existing approved WPO-2013-00044 Phase I Retention Basin design. No modification to the approved WPO/SWM plan is required. Please contact me if you have any questions or require any further information. Sincerely, Scott Collins, PE COLLINS Now, Ypo Ki ARRETT ST, SUITE K CHARLOTTESVILLE VA 22902 434.293.3719 PH 434.293.2813 FX www.collins-engineering.com July 6, 2015 Jonathan Newberry County of Albemarle Department of Community Development 401 McIntire Road Charlottesville, VA 22902 RE: SUB-2015-00026—Avinity 1, Phase IV—Minor Site Plan Amendment Dear Jonathan: Thank you for your comments dated July 1, 2015. Revised plans are hereby submitted incorporating the following changes in response to the items in your letter: Planning 1. The approvals have been listed on the cover sheet as requested, sheet T-1. 2. The monument sign has been removed from the plans as requested, it will be submitted under a separate sign application. 3. The full density calculation is now provided, see sheet T-1. 4. The note has been revised to permit patios only as requested, see sheet S-l. 5. The requested lighting note has been added (see notes #3) to sheet LL-3. Engineering 1. The applicant has contacted engineering to coordinate the bond amounts and will provide a bond estimate for the proposed work shortly. 2. A letter has been submitted concerning the changes that affect the WPO ESC/SWM plans. 3. The applicant has contacted engineering to coordinate the bond amounts and will provide a bond estimate for the proposed work shortly. 4. The approved WPO plan, WPO201300044 is listed on the cover in the approvals box. 5. A letter has been submitted concerning the changes that affect the WPO ESC/SWM plans. 6. Pavement design has been updated with the updated values. 7. The note is added in the bottom right of sheet S-2. 8. Degraw Street as well as Avinity Loop are private roads. The proposed sidewalk location and street cross section is consistent with the streetscape of Avinity 1. 9. There was a labeling error of the "Street Pavement" cross section. The word parking has been removed. 10. Cross drains are now provided on the road profiles. 11. Profile view of Degraw Street has been altered and the end of construction station is noted. 12. Our standard notes for utility profiles have been added, VDOT ST-1 and SL-1 details have been added to sheet S-3. 13. Profiles have been updated with pipe numbers labeled. 14. Large contour labels have been added to the drainage area plan. The Drainage Description table has been updated as well. Fire & Rescue 1. The radii at the northeast corner of Avinity Loop has been adjusted to 25' as requested. ARB 1. A separate sign application will be submitted for the proposed entrance signs. The sign monuments and proposed sign lighting have been removed from the plans. 2. The sign application will include more complete dimension information for the sign structure. 3. The New London Small fixture will be revised with a full cutoff fixture. 4. The ground mounted floodlights will meet full cutoff requirements, the lamp and wattage will be provided with the sign application. 5. The ground-mounted lights will be coordinated with planting. 6. The photometric calculations have been revised to use an LLF of 1.0. 7. The sign lighting will be revised to ensure illumination is not projected beyond the sign text. 8. The applicant notes this comment. 9. The sign lighting will be coordinated with the notes in the sign application. 10. Pole lights have been shifted away from the tree canopies. 11. The photometric calculations have been revised to use an LLF of 1.0. 12. The lamp type and wattage for each proposed fixture is clearly labeled in the revised luminaire schedule. 13. The proposed pole and fixture colors are now indicated on the lighting plan (note#4) on sheet LL-3. Please contact me if you have any questions or require any further information. Sincerely, Scott Collins, PE Johnathan Newberry From: Kaitlyn Kostelec Walthall <kaitlyn @collins-engineering.com> Sent: Wednesday, December 30, 2015 8:47 AM To: Johnathan Newberry Subject: RE: Planning Application Review for SDP201500026 Avinity I Phase IV-Minor. Thanks for letting me know. Happy New Year! Kaitlyn Kostelec Walthall, PE LEED AP BD+C, MPS/RE Project Manager Collins Engineering, Inc. 200 Garrett Street Suite K Charlottesville,VA 22902 PH:434.327.6528 From: Johnathan Newberry [mailto:jnewberry@albemarle.org] Sent: Tuesday, December 29, 2015 5:54 PM To: Kaitlyn Kostelec Walthall Cc: 'Scott Collins'; John Anderson; Lisa Green Subject: RE: Planning Application Review for SDP201500026 Avinity I Phase IV- Minor. Hi Kaitlyn, The applicant's copy of the approved minor amendment is now available for pick-up at our front desk. Thanks, J.T. Newberry Planner County of Albemarle, Planning Division 434-296-5832, ext. 3270 From:Johnathan Newberry Sent:Thursday, December 17, 2015 12:46 PM To: 'Kaitlyn Kostelec Walthall'<kaitlyn @collins-engineering.com> Cc: 'Scott Collins'<scott @collins-engineering.com>;John Anderson <ianderson2 @albemarle.org> Subject: RE: Planning Application Review for SDP201500026 Avinity I Phase IV- Minor. Hi Kaitlyn, Attached is a comment of"no objection"from Engineering. We can now approve the revised minor amendment. Please submit 4 copies to our front desk and I will let you know when a County stamped copy is available for pick-up. Thanks, J.T. Newberry Planner County of Albemarle, Planning Division 434-296-5832, ext. 3270 1 'tare *one From: Kaitlyn Kostelec Walthall [mailto:kaitlyn @collins-engineering.com] Sent: Wednesday, December 09, 2015 3:00 PM To:Johnathan Newberry<jewberry @albemarle.org>; Robbie Gilmer<rgilmer @albemarle.org> Cc: 'Scott Collins'<scott @ collins-engineering.com> Subject: RE: Planning Application Review for SDP201500026 Avinity I Phase IV- Minor. Robbie, I have attached an updated plan sheet (S-1)for the Avinity I Phase IV Minor amendment to address your comment below. The radius at lot 101 was drawn correctly at 25'R, but incorrectly labeled as 13'R. I have updated the text to address your comment. Thank you, Kaitlyn Kaitlyn Kostelec Walthall, PE LEED AP BD+C,MPS/RE Project Manager Collins Engineering,Inc. 200 Garrett Street Suite K Charlottesville,VA 22902 PH:434.327.6528 From: Scott Collins [mailto:scott@collins-engineering.com] Sent: Wednesday, December 09, 2015 2:34 PM To: Kaitlyn Kostelec Walthall Subject: FW: Planning Application Review for SDP201500026 Avinity I Phase IV - Minor. From:Johnathan Newberry [mailto:jnewberry @albemarle.org] Sent:Wednesday, December 09, 2015 2:33 PM To:Scott Collins Subject: FW: Planning Application Review for SDP201500026 Avinity I Phase IV- Minor. Hi Scott, Just sending reminders on some of my projects. There are two remaining reviewers on this minor amendment in Avinity— F/R and Engineering. I've pasted their comments below. J.T. Newberry Planner County of Albemarle, Planning Division 434-296-5832, ext. 3270 The Review for the following application has been completed: Application Number= SDP201500026 Reviewer = Robbie Gilmer 2 Review Status = Requested Changes Completed Date = 08/25/2015 Based on plans dated 8/11/15. 1. Radii on North East corner of Avinity Loop shall be minimum of 25', currently showing 13'radii at this intersection. The radii in question is located at lot 101. From:John Anderson Sent: Monday, August 31, 2015 8:39 AM To:Johnathan Newberry<inewberry@albemarle.org> Subject: Planning Application Review for SDP201500026 Avinity I Phase IV- Minor. The Review for the following application has been completed: Application Number=SDP201500026 Reviewer=John Anderson Review Status = Pending Completed Date =08/31/2015 Thanks for your patience. Comments have not been shared with Applicant. CV comments: If Applicant has responded to comment, response was overlooked: "Approved preliminary plat for Avinity 1I shows identical portions of Avinity Loop addressed under this (Avinity I) MIA. There is uncertainty whether features considered under this MIA that appear on Avinity II plat will continue to be carried under Avinity I bond. Please noti/i' County o f prc'f're nc e: whether to amend Avinity I subdivision bond, or to simply double-bond roadway/drainage features that appear on both Avinity I site plan and Avinity II plat. Revising existing Avinity I subdivision bond would require calculating the difference between initial Avinity I site plan design for just that portion affected by the MIA, and change proposed for this portion(Avinity Loop)."(31-Jul 2015; review comment#1) Recent evaluation of bonds at a separate subdivision shows that with respect to bonds, amended site plans pose complexity and confusion. This comment should be addressed—it is possible response indicating preference has been overlooked. J. Anderson: 434.296-5832—x3069. (All other engineering review comments addressed with this, or prior,revision—thank you) janderson2 8/31/2015 8:37 AM' -x3069 3