HomeMy WebLinkAboutFile Documents.1265 Mountain View Dr.0031-2021-BCHO (14)Markup Summary
Page: 1
Author: jackd
Date: 10/6/2021 8:19:07 AM
Capture: No
File Name: 90. 20210912 - C1.pdf
No curbing is allowed within 10ft
of City street. Provide shown
detention but taper edges of
bioretention at 3:1 to depth.
90. 20210912 - C1.pdf (8)
Page: 1
Author: jackd
Date: 10/6/2021 8:40:45 AM
Capture: No
File Name: 90. 20210912 - C1.pdf
does bioretention A have steps
to level out areas? How does it
prevent the whole flow from
running to the bottom?
Page: 1
Author: jackd
Date: 10/6/2021 8:30:15 AM
Capture: No
File Name: 90. 20210912 - C1.pdf
Show this service in entirety.
Page: 1
Author: jackd
Date: 10/6/2021 8:26:17 AM
Capture: No
File Name: 90. 20210912 - C1.pdf
Point elevations don't match
proposed slopes.
Page: 1
Author: jackd
Date: 10/6/2021 8:22:11 AM
Capture: No
File Name: 90. 20210912 - C1.pdf
Provide point elevations and
drainage slope arrows to show
this area drains to the
bioretention area.
No curbing is allowed
within 10ft of City
street. Provide shown
detention but taper
edges of bioretention
at 3:1 to depth.
does bioretention A
have steps to level
out areas? How does
it prevent the whole
flow from running to
the bottom?
Show this service in
entirety.
Point elevations don't
match proposed
slopes.
Provide point
elevations and
drainage slope
arrows to show this
area drains to the
bioretention area.
curbing removed within 10 feet of street.
NOTE ADDED.
Weirs added every 12 feet and noted.
Top for retention area adjusted.
labels added
location updated
10/12/2021
Page: 1
Author: jackd
Date: 10/6/2021 8:27:27 AM
Capture: No
File Name: 90. 20210912 - C1.pdf
Consider increasing cross slope
of the driveway to ensure
drainage gets to bioretention.
Page: 1
Author: jackd
Date: 10/6/2021 8:39:39 AM
Capture: No
File Name: 90. 20210912 - C1.pdf
Show existing and proposed
contours.
Page: 1
Author: jackd
Date: 10/6/2021 8:30:40 AM
Capture: No
File Name: 90. 20210912 - C1.pdf
Label hatching in this area.
Page: 5
Author: jackd
Date: 10/6/2021 8:34:49 AM
Capture: No
File Name: 90. 20210912-Final Drainage Report.pdf
Provide a detailed analysis
showing how each bioretention
area was sized. Show where all
the impervious area is directed.
All of this should be provided in
the body of the report.
90. 20210912-Final Drainage Report.pdf (5)
Page: 5
Author: jackd
Date: 10/6/2021 8:16:24 AM
Capture: No
File Name: 90. 20210912-Final Drainage Report.pdf
Provide a summary of detention
calculations in the body of the
report.
Consider increasing
cross slope of the
driveway to ensure
drainage gets to
bioretention.
Show existing and
proposed contours.
Label hatching in this
area.
driveway, and parking area, are conveyed via a series of drainage swales and downspout piping to onsite landscaped areas for bio retention of total affected impervious area of 3,360 square feet for the 100-year storm event. The detention volume was calculated by finding the runoff volume of the disturbed area using the rational method and determining volume was modeled with a FAA spreadsheet for storage volume
A summary of the drainage basin and peak runoff for the 5-year and 100-year design storms are summarized in the appendix of this report
3.0 Low Impact Site Design
The use of planting and Bio-Retention areas is the proposed method for stormwater treatment located near the areas of disturbance. A detail of the Bio-Retention cross section and material is on sheet PRDR1
4.0 Hydrologic Criteria
All hydraulic criteria are derived from the Aspen URMP and URDFCD calculation sheets. These output data sheets are shown in the appendix of this report.
5.0 Hydraulic Criteria
This project does not contribute any runoff to the existing COA storm system; nor has it any storm water conveyance structures other than the bio-Retention planting areas described above.
6.0 Proposed Facilities
The only proposed facilities proposed with this project are described in the low impact section of this report and will all be contained onsite within the existing drainage and utility easements.
7.0 Maintenance Plan
All the stormwater mitigation improvements will be owned and maintained by the property
Provide a detailed
analysis showing
how each
bioretention area was
sized. Show where
all the impervious
area is directed. All of
this should be
provided in the body
of the report.
Runoff from the developed area was designed to be released at a rate consistent with historic flows. Runoff from the developed areas, which includes the xeriscape gravel areas, driveway, and parking area, are conveyed via a series of drainage swales and downspout piping to onsite landscaped areas for bio retention of total affected impervious area of 3,360 square feet for the 100-year storm event. The detention volume was calculated by finding the runoff volume of the disturbed area using the rational method and determining volume was modeled with a FAA spreadsheet for storage volume A summary of the drainage basin and peak runoff for the 5-year and 100-year design storms are summarized in the appendix of this report
3.0 Low Impact Site Design
The use of planting and Bio-Retention areas is the proposed method for stormwater treatment located near the areas of disturbance. A detail of the Bio-Retention cross section and material is on sheet PRDR1
4.0 Hydrologic Criteria
All hydraulic criteria are derived from the Aspen URMP and URDFCD calculation sheets. These output data sheets are shown in the appendix of this report.
5.0 Hydraulic Criteria
This project does not contribute any runoff to the existing COA storm system; nor has it any storm water conveyance structures other than the bio-Retention planting areas described above.
6.0 Proposed Facilities
The only proposed facilities proposed with this project are described in the low impact section of this report and will all be contained onsite within the existing drainage and utility easements.
7.0 Maintenance Plan
All the stormwater mitigation improvements will be owned and maintained by the property owner and the following maintenance program should be followed to ensure proper functioning of these proposed improvements. Rain Gardens: Sediment build-up may require periodic removal of sediments and plants when clogging reduces infiltration capacity to unacceptable levels. Plant materials in areas prone to sediment build-up should be limited to grass and groundcovers tolerant of periodic wet-dry cycles.
Provide a summary
of detention
calculations in the
body of the report.
slopes modified to ensure positive drainage
Proposed contours added for water line construction.
The bio retention areas were sized to fit the available areas adjacent to the disturbed areas. A description of basins has
been added to the report.
Summary added to the report.
Flowerbed hatching removed
10/12/2021
Page: 5
Author: jackd
Date: 10/6/2021 8:37:47 AM
Capture: No
File Name: 90. 20210912-Final Drainage Report.pdf
Describe existing and proposed
subbasins.
Page: 5
Author: jackd
Date: 10/6/2021 8:17:02 AM
Capture: No
File Name: 90. 20210912-Final Drainage Report.pdf
Provide a summary of the
bioretention areas in the body of
the report.
Page: 7
Author: jackd
Date: 10/6/2021 8:15:01 AM
Capture: No
File Name: 90. 20210912-Final Drainage Report.pdf
Include appendices in the
submittal.
Lot 7, West Meadows
On-Site Drainage
Runoff from the developed area was designed to be released at a r historic flows. Runoff from the developed areas, which includes the
driveway, and parking area, are conveyed via a series of drainage
piping to onsite landscaped areas for bio retention of total affected
square feet for the 100-year storm event. The detention volume wa
the runoff volume of the disturbed area using the rational method a
was modeled with a FAA spreadsheet for storage volume
A summary of the drainage basin and peak runoff for the 5-year an are summarized in the appendix of this report
Describe existing and
proposed subbasins.
4.0 Hydrologic Criteria
All hydraulic criteria are derived from the Aspen URMP and URDFCD These output data sheets are shown in the appendix of this report.
5.0 Hydraulic Criteria
This project does not contribute any runoff to the existing COA storm sys
storm water conveyance structures other than the bio-Retention planting
above.
6.0 Proposed Facilities
The only proposed facilities proposed with this project are described in
section of this report and will all be contained onsite within the existing
easements.
7.0 Maintenance Plan
All the stormwater mitigation improvements will be owned and maintaine owner and the following maintenance program should be followed to ens of these proposed improvements. Rain Gardens: Sediment build-up may
removal of sediments and plants when clogging reduces infiltration capac
levels. Plant materials in areas prone to sediment build-up should be lim
groundcovers tolerant of periodic wet-dry cycles.
Provide a summary
of the bioretention
areas in the body of
the report.
ows July 2021
Appendix A
Existing and Proposed improvement drawings
Include appendices
in the submittal.
Sub-Basins description added to report. The total disturbed area was calculated for the 3,360 sf.
Summary and table added to report
understood
10/12/2021