HomeMy WebLinkAboutSUB201900030 Review Comments Preliminary Plat 2019-03-22Patricia Saternye
From: Victoria Fort <vfort@rivanna.org>
Sent: Friday, March 22, 2019 8:48 AM
To: Patricia Saternye
Cc: Richard Nelson
Subject: SDP201900010 Berkmar Overlook - Initial site Plan & SUB 201900030 Berkmar Overlook
- Preliminary Subdivision Plat
Attachments: RWSA General Notes.doc; RWSA Utilities - Berkmar Overlook.pdf
Paty,
RWSA has reviewed the Preliminary Site Plan and Subdivision Plat for Berkmar Overlook as prepared by Collins
Engineering and dated February 4, 2019 and has the following comments:
Sheet No. 2 — Existing Conditions
1. There are existing RWSA water mains along three sides of the project area — along Woodburn Road (12" DIP &
CIP), between Woodburn and Berkmar on the northeast boundary of the project (12" CIP), and along Berkmar
Drive (30" DIP). These lines need to be shown correctly and labeled with ownership, size, and material (e.g. 12"
RWSA CIP WL). A GIS map is shown for general location of the water mains; but exact locations need to be field -
verified.
2. Show existing RWSA 15' wide easement where it intersects with TMP 45-12F1 and 45-112F2.
The applicant should note that the existing 12" and 30" water mains are on different pressure zones. The 12"
water mains have an HGL of 795' and the 30" water main has an HGL of 652'.
Sheet No. 3 — Layout & Utility Plan
1. Correctly show and label existing RWSA 12" water mains and easements this sheet. The 12" water line in
Woodburn Road is incorrectly labeled as an 8" water line.
2. A connection is shown to the existing 12" water main in Woodburn Road. See note 3 on Sheet No. 2 regarding
the two separate pressure zones located adjacent to the project area. The applicant will need to confirm with
RWSA and ACSA the allowable connection points to serve this development.
3. RWSA is in the preliminary stages of design of a future 36" raw water main that will be constructed along
Woodburn Road in front of the proposed development. The exact alignment is not yet determined; however,
RWSA may need to pursue easements along the frontage of Woodburn for the construction of the water main.
These easements may intersect the proposed tree preservation and open space areas along Woodburn Road.
Sheet No. 4 — Layout & Utility Plan
1. Correctly show and label existing RWSA 12" and 30" water mains and easements this sheet.
2. A connection is shown to the existing 30" water main in Berkmar Drive. See note 3 on Sheet No. 2 regarding the
two separate pressure zones located adjacent to the project area. The applicant will need to confirm with RWSA
and ACSA the allowable connection points to serve this development.
3. The utility plan shows three proposed crossings of existing RWSA water mains with sanitary sewer lines. All
crossings should adhere to AWWA and VDH guidelines regarding separation of water and sanitary sewer lines
and should be made with a minimum vertical separation of 18".
Sheet No. 5 — Grading and Drainage Plan
1. Correctly show and label existing RWSA 12" and 30" water mains and easements this sheet.
2. The proposed storm sewer doghouse manhole at the intersection of Berkmar Drive and proposed "Road A"
must be a minimum of 5' off the existing 30" water main (from the outside of the pipe to the outside of the
structure).
Sheet No. 6 — Notes & Details
1. Include the RWSA General Water and Sewer Notes this sheet (attached).
Please let me know if you have any questions.
Thank you,
Victoria
Victoria Fort, P.E.
Senior Civil Engineer
Rivanna Water and Sewer Authority
695 Moores Creek Lane
Charlottesville, VA 22902
(0): (434) 977-2970 ext. 205
(F): (434) 295-1146