HomeMy WebLinkAboutFile Documents.800 S Monarch St.0062-2021-BRES (13) 0062-2021 -BRES_800 S Monarch_Engineering2
40.Drainage Report 20220321.pdf(4)
Page: 1
I
Page Index: 1 Per chapter 7 of the CoA URMP, the property is in
' Date: 4/6/2022 1:29:24 PM the yellow mudflow zone. If the property does any
Color: • work at grade(i.e. swale installation), please
__4e____.� Capture: No demonstrate that a potential area of blockage on
File Name: 40.Drainage Report 20220321.pdf the site will remain unchanged (pg 7-2).
All work for this project will not affect mudflow paths or alter offsite drainage paths.Potential areas This is not required if the scope remains entirely on
for blockage of the structure will remain unchanged in terms of mudflow. Further explanation in the existing pool deck.
drainage report.
Page: 8 Tree canopy credit comments:
Page Index: 8
Date: 4/6/2022 12:57:37 PM Color: • 1. only canopy areas within the tributary of interest
Capture: No can be counted towards the tree canopy credit.
File Name:40.Drainage Report 20220321.pdf
1.Trees have been revised to only include those within the tributary of interest. 2. Overlapping tree canopies cannot be counted
twice.
2.Tree canopies are not overlapped.Tree canopies for coniferous trees are kept when
overlap occurs and overlapped canopies for deciduous are removed due to the higher Please revise calculations to consider these two
and lower credits,respectively. comments.
- Page: 12
Page Index: 12 6"freeboard is required per Grassed Swale section
Date: 4/5/2022 8:46:08 AM of the URMP(8.5.1.2).
This swale is not being used for water quality treatment and only for
Color: •
..... conveyance.0.03 cfs is being released(historic flow rate)and the full
Capture: No capacity(80%full)of the swale is 1.78 cfs.See drainage report for
File Name: 40.Drainage Report 20220321.pdf supporting calculations.
— Page: 12 Per section 8.5.1.2 of the URMP, swale velocity is
Page Index: 12
®. Date: 3/31/2022 9:34:04 AM not to exceed 1 ft/sec. Please revise plans.
irl Color: • This swale is not being used for water quality treatment and only for
1 1 1 1 I Capture: No conveyance.See drainage report for supporting calculations.The flow
File Name: 40.Drainage Report 20220321.pdf rate for the historic flow rate is 1.2 ft/sec.
90.Civil Plans 20220321.pdf(7)
Page: [5] C3 Grading &Drainage Plan
Page Index: 5 The Flo-Well system is not approved in the URMP
Date: 3/31/2022 9:44:22 AM and will not be supported with a variance request
`""'� Color: • due to concerns about durability and maintenance.
Capture: No Any proposed BMP that is not included in the
File Name: 90.Civil Plans 20220321.pdf URMP will require the submittal of a variance
A 5'deep drywell is being proposed.See the variance request and request to be reviewed by the City Engineer. This
drainage report for supporting calculations. includes a drywell system that is less than 10'
deep.
IV Page: [5] C3 Grading &Drainage Plan-ii =w Page Index: 5 For the conveyence swale, please show standard
Date: 4/5/2022 8:21:17 AM detail and a cross section every 10 feet to ensure
, Color: • that there are no conflicts with the ajdacent
-: property line and trees.
a. Capture: No
File Name: 90.Civil Plans 20220321.pdf Per the URMP section 8.5.1.2, 6"of freeboard is
required.
This swale is not being used for water quality treatment and only for
conveyance.A typical section for the swale has been provided in the RECEIVED
drawings.3"deep swale and 5'wide.
06/01/2022
ASPEN
BUILDING DEPARTMENT
r Page: [5] C3 Grading &Drainage Plan
Page Index: 5 Based on the topo lines, it appears that the
Date: 3/31/2022 9:36:41 AM proposed plan shows the berm of the adjacent
Color: • swale being converted to a swale.
Capture: No
File Name: 90.Civil Plans 20220321.pdf Has the project team explored the possibility of
There is not a defined berm.Grading stopped at the property line for swale to the east. discharging into the swale on the adjacent
This and one other contour are the only contours that have a'berm'like appearance in property?An easement would be required and
this area.This swale will improve drainage in the area,rather than hinder it. available capacity would have to be shown.
/,/t t lii- Page: [5] C3 Grading &Drainage Plan
� Deck on east side of pool appears to have a slope
(, Page Index: 5 of 0. Confirm that stormwater will drain to the storm
/17, r t Date: 4/6/2022 1:12:30 PM
✓ Color: • system.
,'4 r' --_ Capture: No Pool deck on east drains from east to west towards slot drains.
File Name: 90.Civil Plans 20220321.pdf Slot drains are internally sloped to drywell.
Page: [5] C3 Grading &Drainage Plan
Page Index: 5 Swale design must comply with section 8.5.1.2 of
_=7 Date: 3/31/2022 9:38:42 AM the URMP.This includes but is not limited to:
Color: • -longitudinal slope less than 1%
side slopes flatter than 4:1
"� � = Capture: No velocity not to exceed 1 ft/sec.
File Name: 90.Civil Plans 20220321.pdf
This swale is not being used for water quality treatment and only for Based on section 8.5.1.2, the proposed swale is
conveyance. out of compliance and must be re-designed prior to
next round of submittal.
Page: [5] C3 Grading &Drainage Plan
Page Index: 5 Comment from last round was not addressed.
Date: 4/6/2022 1:17:16 PM Please call out trench drain elevations on plans
(referring to trench drain on S side of pool)
Color: •
Capture: No Trench drain elevations called out.See plans for more details.
File Name: 90.Civil Plans 20220321.pdf
Page: [5] C3 Grading &Drainage Plan
The proposed swale location has tree conflicts.
—- Page Index: 5 Tree removal permits will be required to install this
Date: 3/31/2022 9:38:56 AM
Color: • swale.
'7471 Capture: No Per conversations with David at Parks and an understanding of the
File Name: 90.Civil Plans 20220321.pdf code,grades are not changing more than 6"(cut/fill).We are
proposing a 3"deep swale that changes grade less than 6"within tree
driplines.
RECEWED
06/01/2022
ASPEN
BUILDING DEPARTMENT