HomeMy WebLinkAboutFile Documents.617 W Bleeker St.0062-2019-BRES (16)Markup Summary
Page: 2
Author: jackd
Date: 1/9/2020 3:16:40 PM
File Name: 191115_617 W Bleeker,Shoring,11-12-19.pdf
show location of construction
fences.
191115_617 W Bleeker,Shoring,11-12-19.pdf (3)
Page: 2
Author: jackd
Date: 1/9/2020 3:14:59 PM
File Name: 191115_617 W Bleeker,Shoring,11-12-19.pdf
Show extent of excavation.
Page: 2
Author: jackd
Date: 1/9/2020 3:26:38 PM
File Name: 191115_617 W Bleeker,Shoring,11-12-19.pdf
Note how proposed utility
services are accommodated with
proposed system.
Page: 1
Author: jackd
Date: 1/17/2020 3:13:36 PM
File Name: 19-7-550 (10-03-19) Interim Subsoil Study
signed.pdf
Define soil type for site.
19-7-550 (10-03-19) Interim Subsoil Study signed.pdf (1)
Page: 5
Author: jackd
Date: 1/10/2020 3:25:42 PM
File Name: 617 West Bleeker_Drainage
Report_2019.09.26.pdf
The nearest city inlet is on
Francis and 5th, three blocks
away. This project can utilize the
city storm infrastructure.
617 West Bleeker_Drainage Report_2019.09.26.pdf (3)
Temporary Micropile Wall
Location
November 12, 2019 Residence
617 West Bleeker Street
19-050G-D1
Grade-2
of 6
RDJ
Project Number:
Date:Sheet Number:Prepared by:Project:
Prepared by B&Y Drilling, Inc.
Designed For:
otes:
Base plan by Roaring Fork Engineering dated 09-26-2019.
For utility installation, trench to back of micropile wall. Hand dig between
micropiles and extend utilities through wall.
show location of
construction fences.
Temporary Micropile Wall
Location
2019 Residence
617 West Bleeker Street Grade-2
Sheet Number:Project:
all. Hand dig between
Show extent of
excavation.
Micropile Wall
Turn Line 4
1+
4
0
1+60
Note how proposed
utility services are
accommodated with
proposed system.
Define soil type for
site.
1.2 Proposed Site
This project is classified as a ‘Major Project’ per Table 1.1. of the City of Aspen Urban Runoff Management Plan (URMP). The proposed development is over 1,000 square feet and disturbs an area of approximately 8,800 square feet, roughly 95 percent of the site. The intent of this report is to demonstrate compliance with the requirements of the URMP. The Low Impact Design (LID) Principles in the introduction of the manual were used as a guide throughout the design process.
The proposed scope of work includes the demolition of an existing home and build of a two-story, single family residence with a basement level, driveway, flagstone walkways, and a
concrete deck. There are a number of plantings and landscaped areas associated with this project as well.
The topography of the parcel is relatively flat with existing grade typically draining away from
the site towards West Bleeker Street. The proposed drainage infrastructure includes area inlets and a trench drain to convey flows to an onsite drywell for infiltration into the surrounding earth. This drainage report will focus on the drainage basins being captured and conveyed by the storm drainage system. The onsite basin that is no longer following historical runoff flow paths has been analyzed for full detention design of a 100-year storm event.
1.3 Previous Drainage Studies
The analyzed parcel of land at 617 West Bleeker is located in basin, System 3, of the Aspen Master Drainage plan. The City of Aspen public storm infrastructure is not close enough to tie into. Therefore, full detention is being implemented to not impact the City of Aspen’s surface flows.
1.4 Offsite Drainage
The adjacent roads historically do not drain toward the property as there is an existing curb and
gutter adjacent to the property along the Right-of-Way. The site has a small swale on the west and east side of the residence that will be kept post-development to not impact existing drainage paths from neighboring properties. Offsite drainage will not be incorporated into the proposed onsite storm system.
2.0 Drainage Basins and Sub-basins
The development on the parcel is proposed as one large onsite basin. This basin was then subdivided into smaller sub-basins and analyzed to aid with design of the storm water infrastructure. Basin and Sub-basin delineations are shown on sheets C4 and C5 of the submitted civil drawings. These sheets list impervious areas, runoff coefficients, peak flows, and the required volume of runoff to be detained.
2.1 Drainage Basins
The nearest city inlet
is on Francis and 5th,
three blocks away.
This project can
utilize the city storm
infrastructure.
Construction fences are shown on CMP and not Micropile Plans.
Extent of excavation is now shown on plans
Note 2 on sheet Grade 2 explains what the engineer's intent/
explanation for utility installation would happen.
OSHA soil classification for soil type has been added to the soils report
per discussion.
It is not economically feasible to utilize city infrastructure 3 blocks away for the project. This would require
over 600' in RCP piping. Grades on the site do not allow for a daylighted pipe into the street and convey
through the curb and gutter system. On site detention is recommended. This section of the drainage
report has been revised.
04/13/2020
Page: 13
Author: jackd
Date: 1/14/2020 3:53:27 PM
File Name: 617 West Bleeker_Drainage
Report_2019.09.26.pdf
Call out in the O&M section how
the pervious pavers are to
function and be maintained.
Page: 13
Author: jackd
Date: 1/14/2020 3:48:08 PM
File Name: 617 West Bleeker_Drainage
Report_2019.09.26.pdf
Include pervious pavers in
proposed facilities.
Page: [3] C2 EXISTING CONDITIONS
Author: jackd
Date: 1/8/2020 3:14:00 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Provide Title purpose and legal
description at the top of the
page.
Civil 617 West Bleeker_Building Permit_2019.09.26.pdf (16)
Page: [3] C2 EXISTING CONDITIONS
Author: jackd
Date: 1/16/2020 3:21:08 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
The existing transformer
easement is 6'x6' which is not to
current code. The trans former
easement needs to be upsized
to provide proper clearances.
Page: [3] C2 EXISTING CONDITIONS
Author: jackd
Date: 1/6/2020 9:44:22 AM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Surveyors Certificate should
verify that the error of closure is
less than 1/15000.
of Basin 1.
Infiltration of the drywell is calculated using the percolation rate given by the interim geotechnical report. The infiltration area is through the side of the gravel surrounding the drywell. Infiltration through the bottom was disregarded due to potential for clogging.
7.0 Operation and Maintenance
7.1 Drywell
Drywells must be inspected and maintained quarterly to remove sediment and debris that has washed into them. A maintenance plan shall be submitted to the City in the Drainage Report describing the maintenance schedule that will be undertaken by the owners of the new residence or building. Minimum inspection and maintenance requirements include the following:
• Inspect drywells at least four times a year and after every storm exceeding 0.5 inches. • Dispose of sediment, debris/trash, and any other waste material removed from a drywell at suitable disposal sites and in compliance with local, State, and Federal waste regulations.
• Routinely evaluate the drain-down time of the drywell to ensure the maximum time of 24
hours is not being exceeded. If drain-down times are exceeding the maximum, drain the
drywell via pumping and clean out the percolation area (the percolation barrel may be jetted
to remove sediment accumulated in perforations. If slow drainage persists, the system may
need to be replaced.
Drywell Storage
Drywell Basins Diameter Storage Depth Perforated Depth Internal Volume External (18" of Screened Rock) Volume Total Capacity Required Capacity
(Name)(#)D (ft)H (ft)P (ft)π*H*(D/2)2) (ft3)0.3*π*P*((D/2)+1.5)2 - (D/2)2) (ft3)(ft3)(ft3)
DRYWELL A 1 6 13 8 368 85 452 443
Drywell Infiltration
Name Diameter Perforation Height Perforated Area Total Capacity Infiltration Rate Infiltration Time Volume Infiltrated in 24 Hours
(Name)D (ft)H (ft)A (ft2) = 3.14*D*H V (ft3)I (in/hr)T (hr) = V/(A*I/12)Vtotal (ft3) = V*T
DRYWELL A 6 8 150.80 452.39 30 1.2 542.87
Call out in the O&M
section how the
pervious pavers are
to function and be
maintained.
6.0 Proposed Facilities
This property is not connected to the COA’s storm water infrastructure, and the onsite BMP is
sized for full detention, as clarified in section 2.2 of this report. Below are the analyses for the
detention structure’s capacity and infiltration.
6.1 Drywell
Below is a table that shows the proposed drywell meeting the capacity required for full detentio
of Basin 1.
Drywell Storage
Drywell Basins Diameter Storage Depth Perforated Depth Internal Volume External (18" of Screened Rock) Volume Total Capacity Required Capac
(Name)(#)D (ft)H (ft)P (ft)π*H*(D/2)2) (ft3)0.3*π*P*((D/2)+1.5)2 - (D/2)2) (ft3)(ft3)(ft3)
DRYWELL A 1 6 13 8 368 85 452 443
Include pervious
pavers in proposed
facilities.
61
7
W
E
S
T
B
L
E
AS
P
E
N
,
C
O
C2
EXISTING CONDITIONS
Provide Title purpose
and legal description
at the top of the
page.
The existing
transformer
easement is 6'x6'
which is not to
current code. The
trans former
easement needs to
be upsized to provide
proper clearances.
#
DE
S
C
R
I
P
T
I
O
N
CONSTRUCTION
JOB #:
61
7
W
E
S
T
B
L
E
E
K
E
R
S
T
.
AS
P
E
N
,
C
O
8
1
6
1
1
2018-65
FOR
1
PR
I
C
I
N
G
S
E
T
2
BU
I
L
D
I
N
G
P
C2
EXISTING CONDITIONSSurveyors Certificate
should verify that the
error of closure is
less than 1/15000.
A section on the operations and maintenance of pervious pavers has been added to the drainage report.
A section in the proposed facilities section of the drainage report has been added for the pervious pavers.
SURVEY HAS BEEN REVISED
TRANSFORMER HAS BEEN UPSIZED
SURVEY HAS BEEN REVISED
04/13/2020
Page: [3] C2 EXISTING CONDITIONS
Author: jackd
Date: 1/8/2020 3:33:58 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Show curb and gutter with
flowline and edge of asphalt.
Page: [3] C2 EXISTING CONDITIONS
Author: jackd
Date: 1/8/2020 3:15:57 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Survey must be preformed or
verified within the last 12
months.
Page: [3] C2 EXISTING CONDITIONS
Author: jackd
Date: 1/8/2020 3:26:38 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Show driplines of all trees.
Page: [3] C2 EXISTING CONDITIONS
Author: jackd
Date: 1/6/2020 9:42:19 AM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Is the transformer easement
shown here? Clearly depict the
extent of the transformer
easement.
Page: [3] C2 EXISTING CONDITIONS
Author: jackd
Date: 1/8/2020 3:30:12 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Provide land area to the nearest
thousandth of an acre.
Show curb and gutter
with flowline and
edge of asphalt.
Survey must be
preformed or verified
within the last 12
months.
Show driplines of all
trees.
Is the transformer
easement shown
here? Clearly depict
the extent of the
transformer
easement.
Provide land area to
the nearest
thousandth of an
acre.
SURVEY HAS BEEN REVISED
SURVEY HAS BEEN REVISED
TREE DRIPLINES ARE SHOWN ON LANDSCAPE DRAWINGS, L1
AND L2 AND ON ARCHITECTURAL SITE PLAN A1-00.
TRANSFORMER HAS BEEN UPSIZED
SURVEY HAS BEEN REVISED
04/13/2020
Page: [3] C2 EXISTING CONDITIONS
Author: jackd
Date: 1/8/2020 4:03:34 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Show sanitary sewer service
line.
Page: [4] C3 DEMOLITION PLAN
Author: jackd
Date: 1/16/2020 3:14:14 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Provide a legend of symbols on
every page of the civil plans.
Page: [7] C6 GRADING AND DRAINAGE
Author: jackd
Date: 1/16/2020 3:35:55 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Show the proposed landscape
plan overlayed on the proposed
drainage plan.
Page: [7] C6 GRADING AND DRAINAGE
Author: jackd
Date: 1/16/2020 3:30:15 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Show curb and gutter with flow
line and type.
Page: [10] C9 UTILITIES
Author: jackd
Date: 1/16/2020 3:19:10 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Provide a load calc form
showing that the existing
transformer has capacity to
handle the change in load.
Show sanitary sewer
service line.
CONSTRUCTION
JOB #:
61
7
W
E
S
T
B
L
E
E
K
E
R
S
T
.
AS
P
E
N
,
C
O
8
1
6
1
1
2018-65
FOR
DEMOLITION PLAN
Provide a legend of
symbols on every
page of the civil
plans.
61
7
W
E
S
T
B
L
E
E
K
E
R
AS
P
E
N
,
C
O
8
1
6
1
C6
GRADING AND DRAINAGE
Show the proposed
landscape plan
overlayed on the
proposed drainage
plan.
Show curb and gutter
with flow line and
type.
Provide a load calc
form showing that the
existing transformer
has capacity to
handle the change in
load.
A legend has been added to all applicable pages of the civil drawings.
Proposed plantings have been added to the grading and drainage sheet C6.
Curb and Gutter flow line is show on plans. Curb and Gutter type is called out on sheet C6.
Electric load calc is now show on sheet C9.
SURVEY HAS BEEN REVISED
04/13/2020
Page: [10] C9 UTILITIES
Author: jackd
Date: 1/16/2020 3:26:59 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Show transformer easement on
utilities plan.
Page: [12] C11 DETAILS
Author: jackd
Date: 1/16/2020 3:51:20 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Call out aggregate as washed.
Page: [12] C11 DETAILS
Author: jackd
Date: 1/16/2020 4:03:32 PM
File Name: Civil 617 West Bleeker_Building
Permit_2019.09.26.pdf
Pervious Paver Detail should
depict filter material meeting
Table PPS-1 under reservoir
layer.
Show transformer
easement on utilities
plan.
Call out aggregate as
washed.
Pervious Paver Detail
should depict filter
material meeting
Table PPS-1 under
reservoir layer.
Transformer easement is now show on sheet C9.
Callout on the pervious paver detail has been updated.
Callout for the material below the reservoir layer has been updated to meet Table PPS-1 (CDOT Table
703-7).
04/13/2020