HomeMy WebLinkAboutResponse to Staff CommentsResponse to: STAFF REVIEW COMMENTS NO. 1
Project: UNIVERSITY HEIGHTS PH 1 (FP) — 11- 00500086
PLANNING
Please add the call numbers to the northeast corner of Common Area 4. Also, the metes and
bounds indicate a curve that is not shown.
The calls were added to the plat. There is a small curve at the north east corner so
that the lot line follows the proposed right -of -way of future phases.
-,2 phase number needs to be added to the Certificate of Ownership and Dedication.
Added to the Plat.
Please remove "City" beside Secretary under the Attest for Approval of P &Z Commission.
Corrected.
V/ The application indicates that there are no deed restrictions for this development. However,
the HOA will control the common areas. Please provide the documentation showing this
obligation.
The HOA Covenants, Condition and Restrictions are being prepared will address the
maintenance and control of the common area. A copy will be forwarded to the CoCS.
Common areas should be added to the title block.
Added to the Plat.
The volume and page number for the recorded deed is different in the title report than on the
plat document.
The deed used for the title report is from the previous owner, using a different
Surveyor. The deed references on the plat is from the current owners purchase of the
land.
y Please note that any changes made to the plans, that have not been requested by the City of
College Station, must be explained in your next transmittal letter and "bubbled" on your plans.
Any additional changes on these plans that the City has not been made aware of will constitute
a completely new review.
Noted.
A temporary turnaround is required at the end of Davidson, Haverford, and Kenyon for Fire and
Sanitation Services:
• An Easement Dedication sheet and all necessary attachments must be submitted for
review prior to the final plat being scheduled for a P &Z meeting;
• The Temporary Turnaround Easement must be filed at the courthouse and the
recording information included on the Final Plat prior to the plat being filed at the
courthouse.
It has been discussed that temporary turnarounds are not required for this project.
Please note that you may be required to submit paid tax certificates if they are not current prior
to the filing of your plat.
Noted.
Greenways
1Z No comments
TXDOT Comments
/No comments (off state system, no anticipated impact)
ENGINEERING COMMENTS NO. 1(FINAL PLAT)
Please pay outstanding development permit fee of $12,259.96 upon re- submittal.
Check is Provided
ease verify that BTU and Wellborn Water do not need any additional easements.
BTU & Wellborn SLID have reviewed the plans and the BTU design required 15' PUE
between lots 10 /11, 13114 and 16/17. Welborn SUD is OK with the easement as
shown.
ease provide additional easement on Lots 14 — 24, Block 4 for the sanitary sewer main. Where
the sanitary sewer main is at a depth of 14 feet, 15 feet on either side of the pipe must be right -
of -way or easement; at a depth of 6 feet, 10 feet on either side of the pipe must be right -of -way
or easement.
Lots 14 -24, Block 4 a 15' PUE was added.
Lot 1, Block 5 needs additional easement along Los Portales Drive to cover the proposed water
main.
A 10' easement was added to the south west side of Lot 1 Block 5
6V Common Area 2 is missing a PUE to cover the adjacent proposed sanitary sewer main.
A 10' easement was added to Common Area 2
Common Area 1 is missing a PUE to cover the adjacent proposed water main.
A 10' easement was added to Common Area 1
wT Additional Public Access Easement may be need along Holleman Drive. In looking at the
construction documents the sidewalk appears to be too close to the adjacent bar ditch.
The P.A.E. has been increased to Win width.
Please contact Frank Borroni (979- 693.4152 frank.e.borroni @usos.aov ) with the United States
Postal Service concerning mail service for this development and please provide documentation
concerning.
Email and a phone conversation has been exchanged with Mr. Frank Borroni. He said
that the USPS requires a 6'x 16' concrete slab located as shown on the construction
plans
Please provide a note on the plat addressing the off -site open swell connecting the development
to the proposed detention facility and its ownership and maintenance responsibilities.
Note 12 added to Plat.
Construction documents and reports are still under review. These comments will be forwarded
as soon as possible.
Noted.
Engineering Comments No. 1 (Construction Documents)
. (Sheet 1) Please note and identify that all existing driveways off Holleman need to be removed
with this project.
This note was added to the Overall Sheet (1) and to the Grading Plans (7, 8, & 9).
(Sheet 1) Is the water system proposed to be extended to Las Palomas with the extension of Los
Portales Drive, per the preliminary plat?
Yes, that line will be extended In Phase 4 across Kenyan and then to Los Palomas in
Phase 5
(Sheet 8) Please provide inlet pipe in cross- section C -C detail.
This has been added to the C -C detail on Sheet 8, but the detail has been removed
from the plans, since modification to the pond outlet structure are not proposed at this
time.
(Sheet 12) The City does not typically allow driveway culverts smaller than 18 inches in
diameter, due to issues with clogging. Additional grading in the subject area could
accommodate the slightly larger pipe.
The 15 "pipes have been revised to 18" pipes.
(Sheet 13) Please adjust storm alignment out from under pavement of Los Portales Drive.
The plans have been updated. The alignment of the storm sewer has been revised.
One junction box has been added.
(Sheet 18) Valve spacing should not exceed 800 ft, please address.
Two 8" valves have been added. One on Waterline W -2 near block 4, lot 5, and one on
Waterline ear block . 7
(Sheet 20) Please provide additional easement on Lot 1, Block 1 and Lot 1, Block 2 for the
sanitary sewer main. With the sanitary sewer main at a depth of 14 feet, 15 feet on either side
of the pipe must be right -of -way or easement.
A IS' PUE has been added to the plans and to the Final Plat.
6/0(0,sheet 21) Please provide clean -out on plugged stub out line.
This has been added to the plans and estimate.
(Sheet 23) The sanitary sewer main should be extended to adjacent proper via Los Portales
Drive. There appears to be an area on the adjacent tract to the north that could be served with
a sanitary sewer extension along the Los Portales Drive extension.
Los Portales Drive connects to the Kemp trod near the high point of the tract. I
suggest we stub out on the west end thru common area No. 3 which would serve the
west end much better. This will be done with Phase 2
; O OOO Please verify and place a note on the plans that no sanitary sewer service will be left more than
3.5 feet deep at the point of terminus by developer's contractor.
This note has been added to the plans.
lease place a note on the plans stating that the detention facilities must be constructed first.
This has been added to the overall sheet and to the three grading plan sheets.
J,r4ease pull the sidewalk as far away from the bar ditch as possible.
We have a 30' common area, we moved the waterline, which Wellborn SUD doesn't
want under a sidewalk, to 6.5' from right of way line, put only 1' of the sidewalk in the
ROW instead of the 3' we now have. This change is shown on sheets 15 & 16
/For the residential streets with a 5 foot sidewalk, if preferable the 3 foot offset can be increased
to 4 foot in order to comply with recent changes to irrigation rules /regulations.
The plans have been updated with this spacing.
14. ase provide street sign plan and details, as well as a table indicating the block numbers for
/ each sign. Let me know if you need a copy of this detail.
The street sign locations are shown on sheets 2 through 6, the sign desing detail is
shown on sheet 5 along with the block number table.
5. P se provide a copy of the street light /electrical plan.
See attached copy of specification for street light and design of streetlight /electrical
layout by BTU.
. As it was noted in the drainage report the existing detention system is not properly functioning,
what is the condition of the storm system directly down street from the proposed outlet
modification? Will the flow be properly conveyed to the downstream un -named tributary
beyond the Las Palomas property?
The existing pond is functioning properly, it does not have adequate volume for the
development of the entire University Heights Development. The existing storm sewer
system and drainage channel downstream are in accordance with the Los Palomas
Subdivision design. The flow to the un -named tributary beyond the Los Palomas
development should be properly conveyed.
. The proposed outlet structure modifications are located within an off -site private drainage
easement, please verify that permission has been granted in order to access the property and
make the proposed improvements.
We will check with the landowners to see about access to the property. We have ran
the pond analysis without modifying the outlet structure or adding a new overflow
spillway and the results show that these modifications are not needed at this time.
Since we are ready to start construction and gaining access could delay the project, we
will be submitted a revised drainage report showing that we do not need to access the
adjacent property at this time. Increasing the discharge capacity of the outlet
structure is desired because it will allow for a smaller pond for the ultimate
development of the site since the increased flow results in a lower peak volume
required in the pond.
. Although the report states that the mitigation effort for Phases 1, 2 & 3 are being handled with
this initial phase and report, how is Drainage Area 204 taken into account with this design. Is
the intent to still to create another detention facility in Common Area #3?
Yes, our topography and a site visit to the northwest corner of the site shows there is a
significant portion of the site does not drain to the existing detention pond. The
design of the facility in Common Area 3 will be included with the Phase 2 design.
t o e Drinage Exhibit B appears to illustrate a future outfall to Common Area 3, which contradicts the
report?
Areas 104 & 104 are shown for reference only. The existing drainage which outfalls to
the north west will be addressed with an additional detention structure in Phase 2.
Please address the increased outlet size and a decreased outflow as a result? Is the Q100
existing = 73.3 cfs directly from the previous report and not a reflection of as -built conditions?
The previous report had a peak Q300 of 93.55 cfs. This number is higher than our
calculations because that report assumed all of the site drained to the un -named
tributary (50.59 acres), while Exhibit A in our report shows that only 41.62 acres drains
to the un -named tributary. The Q300 = 73.3 cfs is based on pre - development
conditions for the 41.62 acres. Since this is a shared detention pond for the 2
developments, this is the pre - development peak flow we will use for our peak
discharge comparison.
In addition to the following standard comments, if more than 5 acres will be disturbed during
construction of this project a NOI must be filed with the state and a copy provided to the CoCS.
Storm water management requirements are as flows, any questions may be directed to Donnie
Willis, CoCS Drainage Inspector, at 979 - 764 -6375.
Noted