HomeMy WebLinkAboutSite Certifications - 01/21/2022
December 24, 2021
Josh Erramouspe
Olsson
1880 Fall River Drive, Suite 200
Loveland, CO 80538
RE: Lot and Grading Certification Analysis – Revised
Major Amendment to a Portion of Foothills Mall Redevelopment Planning Area 3
(Lots 3, 4, 5, and 6 of Foothills Mall Redevelopment)
Dear Mr. Erramouspe,
We have completed an analysis of the following buildings and lots to complete the City of
Fort Collins Overall Site and Drainage Certification and Certification of Lot Grading for each
building:
• Building 1-8 of Lot 3 at 312 E Foothills Parkway
• Building 9-13 of Lot 4 at 3241 Stanford Road
• Building 14-17 of Lot 5 at 3381 Stanford Road
• Building 18-19 of Lot 6 at 3501 Stanford Road
The analysis included review of following information provide to LandOne (See Appendix U):
• Approved Grading Plans completed by Olsson
• Foundation As-builts completed by Olsson
• Improvement Location Certificate completed by ESC
• Cycle Apartments Spot Grading Plans completed by Olsson
• As-built Survey completed by ESC
• Cycle Apartments Spot Grading Plans Record Drawings completed by Olsson
• Amendment to Low Impact Design Analysis and Assessment of Rain Garden 33’s as-
built by Olsson
In addition to the information provided to LandOne, we completed two site visits: one on
January 21st, 2019 and one on February 8th, 2021.
The reason for the delay in completing the certifications is because of deficiencies in the
original construction based on the improvement location certificate completed by ESC in
2019. Analysis of the deficiencies was completed by Olsson in 2019. Based on that analysis,
the Cycle Apartments Spot Grading Plans were created to correct the deficiencies. Once the
construction was finished, an as-built survey was completed by ESC and record drawings
were created by Olsson. See Appendix U.
N
www.LandOne.co 361 71st Avenue, Suite 100 Greeley, CO 80634 970-632-2311
Lot and Grading Certification Analysis
Major Amendment to a Portion of Foothills Mall Redevelopment Planning Area 3
(Lots 3, 4, 5, and 6 of Foothills Mall Redevelopment)
December 24th, 2021
Page 2
Based on the analysis of the information and stated site visits, the original design intent in
general is being met. The scope of the analysis is limited to the evaluation of the
information provided and observations made during the site visits. The analysis is not a
guaranty or warranty, either expressed or implied.
The following is being provided to support the analysis and certifications:
• Appendix A – Overall Site and Drainage Certification
• Appendix B thru T – Building Certifications
• Appendix U – Supporting Material
If you have any questions or need additional information, please contact me.
Sincerely,
LandOne Engineering, LLC
Daniel Hull, PE
Principal/Owner
Enclosures
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39337
30 ar
12/24/2021
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39337
30 ar
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Exhibit B
Overall Site and Drainage Certification Responses
I. Water Quality and Quantity Detention Basin
This section is not applicable since water quality and quantity detention basin are not applicable to this
project.
II. Channels/Swales
This section is not applicable since channels and swales are not applicable to this project.
III. Storm Pipes
As-builts indicate there are deficiencies in the construction of the storm pipe. Since the storm drain
system is private, the owner has accepted all as-built conditions.
IV. Concrete Pans
No comments
V. Storm Drain Inlets
As-builts indicate there are variations in the construction of the inlets. Since the storm drain system is
private, the owner has accepted all as-built conditions.
VI. Culverts
This section is not applicable since culverts are not applicable to this project.
VII. Sub-Drains
This section is not applicable since sub-drains are not applicable to this project.
VIII. Curb Cuts
There is one curb cut called for on Lot 3 per Sheet C14.1. This curb cut was not constructed.
IX. Sidewalk Culverts & Chases
No comments
X. Site Grading
No comments
XI. Permanent Erosion Control BMPs
No comments
XII. Post-Construction Site Cleanup
No comments
XIII. Certification of LID and Water Quality Facilities
See Exhibit D - During Construction Inspection Checklist in Appendix B and Exhibit H – Amendment to
Low Impact Design Analysis and Assessment of Rain Garden 33’s as-built by Olsson in Appendix U
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XIV. Certification of Other Permanent BMPs
No comments
XV. Certification and Erosion Control Measures
No comments
XVI. Statement of Compliance
No comments
XVII. Signature and Stamp
No comments
N
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B1601350
39337
30 ar
12/24/2021
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B1601326
39337
30 ar
12/24/2021
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N
B1601325
39337
30 ar
12/24/2021
N
N
B1601381330
39337
30 ar
12/24/2021
N
N
B1601323400
39337
30 ar
12/24/2021
N
N
B1601321
39337
30 ar
12/24/2021
N
N
B1601318
39337
30 ar
12/24/2021
N
N
B1601385
39337
30 ar
12/24/2021
N
N
B1601380
39337
30 ar
12/24/2021
N
N
B1601386
39337
30 ar
12/24/2021
N
N
B1601315
39337
30 ar
12/24/2021
N
N
B1601314
39337
30 ar
12/24/2021
N
N
B1601313
39337
30 ar
12/24/2021
N
N
B1601312
39337
30 ar
12/24/2021
N
N
B1601310
39337
30 ar
12/24/2021
N
N
B1601307
39337
30 ar
12/24/2021
N
N
B1601305
39337
30 ar
12/24/2021
N
N
39337
30 ar
12/24/2021
N
N
B1601302
39337
30 ar
12/24/2021
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Appendix U
Supporting Material
Exhibit A: Approved Grading Plans dated 03/30/2016 – Original grading plans approved by the
City of Fort Collins.
Exhibit B: Foundation As-builts dated 09/15/2017 – As-built survey for the foundations.
Exhibit C: Improvement Location Certificate dated 01/10/2019 – As-built survey completed by
Engineering Service Company.
Exhibit D: Cycle Apartments As-Constructed Drainage Analysis dated 11/7/2019 – Analysis
completed by Olsson. Analysis is based on Improvements Location Certificate completed by
Engineering Service Company.
Exhibit E: Cycle Apartments Spot Grading Plans dated 12/24/2019 – Plans created to address
deficiencies in the original construction.
Exhibit F: As-built Survey dated 10/01/2020 – as-built survey completed but Engineering Service
Company.
Exhibit G: Cycle Apartments Spot Grading Plans Record Drawings dated 12/29/2020 – Record
drawings of the spot grading plans.
Exhibit H: Amendment to Low Impact Design Analysis and Assessment of Rain Garden 33’s as-
built by Olsson, dated 10/31/2021 – analysis of the as-built to verify the intent of the design
was met.
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Response to Comments.pdf Markup Summary
Subject: Callout
Page Label: 7
Author: dmogen
Date: 12/23/2021 9:14:09 AM
Status: Completed set by Daniel Hull on 12/23/2021 at
9:14:09 AM
Color:
Layer:
Space:
No? Does system have
adequate capacity per the
design? Please clarify.
dmogen (23)
Subject: Re: Callout
Page Label: 7
Author: Daniel Hull
Date: 12/23/2021 3:04:36 PM
Status:
Color:
Layer:
Space:
The as-builts do not match the
design consistently. However,
the stormwater systems have
been oversized to convey the
major event. It is reasonable to
assume the pipes are capable of
carrying the minor event.
Subject: Callout
Page Label: 7
Author: dmogen
Date: 12/23/2021 3:01:27 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:01:27 PM
Color:
Layer:
Space:
No? Please clarify.
Subject: Re: Callout
Page Label: 7
Author: Daniel Hull
Date: 12/23/2021 2:59:36 PM
Status:
Color:
Layer:
Space:
The as-builts do not match the
design consistently. However,
the stormwater systems have
been oversized to convey the
major event. It is reasonable to
assume the pipes are capable of
carrying the minor event.
Subject: Callout
Page Label: 8
Author: dmogen
Date: 12/23/2021 3:05:09 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:05:09 PM
Color:
Layer:
Space:
No? Please clarify the no's in
this section.
m drains) - FCSCM Ch. 9, Sec. 4.0
pacity: The as-built capacity of all pipes installed on this project has been
r exceeds the capacity requirements shown in the approved drainage study for this
rain pipe sizes and materials have been verified and are in conformance with the
ction plans. (Indicate on the plan and profile sheets that they have been verified.)
substitutions must be approved prior to installation. If a pipe size or material was
onstruction, the certification engineer must attach the approval documents or supply
tification. Approval documents must include a calculation documenting the capacity
l or greater) of the substituted size.
Exhibit A - Page 4 of 8
No
No? Does system
have adequate
capacity per the
design? Please
clarify.
bstituted size.
e is as shown on the approved construction plans. The
opes flatter than the designed slope on the constructio
ons on an attached sheet.
ve been verified and are shown on the plan and profile s
ts: All pipes are installed in accordance with the
tion specifications.
ts for all pipes have been met as shown on the approved
out in critical locations.
as specified on the approved construction plans have be
uction methods specified on the approved construction
No
No? Please clarify.
CSCM Ch. 9, Sec. 3.0
lation: All storm drain inlets have been constructed in accordan
on plans and construction specifications.
nd type of inlets are consistent with the inlets shown on the approved
writing “Verified” on each inlet on the plan sheet or list on a separate
ype and size (length). If the inlet installed is other than the one on the
detail sheet, provide the name and source of the detail with justificat
Exhibit A - Page 5 of 8
No
No? Please clarify
the no's in this
section.
Subject: Re: Callout
Page Label: 8
Author: Daniel Hull
Date: 12/23/2021 3:05:01 PM
Status:
Color:
Layer:
Space:
The as-builts do not match the
design consistently. However,
the stormwater systems have
been oversized to convey the
major event. It is reasonable to
assume the pipes are capable of
carrying the minor event.
Subject: Callout
Page Label: 10
Author: dmogen
Date: 12/23/2021 3:19:11 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:19:11 PM
Color:
Layer:
Space:
should this be "n/a"?
"underground infiltration"
typically refers to StormTech
facilities used for
WQ/LID/detention and I don't
think that was on this project.
Subject: Re: Callout
Page Label: 10
Author: Daniel Hull
Date: 12/23/2021 3:19:05 PM
Status:
Color:
Layer:
Space:
This item was revised
Subject: Callout
Page Label: 12
Author: dmogen
Date: 12/23/2021 3:17:51 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:17:48 PM
Color:
Layer:
Space:
What are the deficiencies? Is
stormwater still conveyed as
intended?
Is there documentation of
acceptance by ownership?
(Same ?s for section V)
Subject: Re: Callout
Page Label: 12
Author: Daniel Hull
Date: 12/23/2021 3:16:22 PM
Status:
Color:
Layer:
Space:
I revised to the word to
variations. As noted, the
stormwater systems have been
oversized to convey the major
event. It is reasonable to
assume the pipes are capable of
carrying the minor event.
XIII.Certification of LID and Water Quality Facilities - FCSCM Ch. 7
A.Attached are the During Construction Inspection Checklist for Low Impact Development (
other items to be verified during construction, along with pictures and other required documen
B.Attached is verification of the rain garden and/or sand filter flat surface area(s) and pond
volume(s). This verification includes survey of critical elevations.
C.Attached is verification of the underground infiltration required volume(s), weir elevation
orifices, inspection ports and filtering fabric. This verification includes survey of critical elevation
D.All visible LID design features were verified as part of the engineer's site visit.
11/19
Yes
Yes
Yes
Yes
should this be "n/a"?
"underground infiltration" typically refers to
StormTech facilities used for
WQ/LID/detention and I don't think that was
on this project.
Exhibit B
Overall Site and Drainage Certification Responses
I. Water Quality and Quantity Detention Basin
This section is not applicable since water quality and quantity detention basin are not
applicable to this project.
II. Channels/Swales
This section is not applicable since channels and swales are not applicable to this project.
III. Storm Pipes
As-builts indicate there are deficiencies in the construction of the storm pipe. Since the storm
drain system is private, the owner has accepted all as-built conditions.
IV. Concrete Pans
No comments
V. Storm Drain Inlets
As-builts indicate there are deficiencies in the construction of the inlets. Since the storm drain
system is private, the owner has accepted all as-built conditions.
VI. Culverts
This section is not applicable since culverts are not applicable to this project.
VII. Sub-Drains
This section is not applicable since sub-drains are not applicable to this project.
VIII. Curb Cuts
There is one curb cut called for on Lot 3 per Sheet C14.1. This curb cut was not constructed.
IX. Sidewalk Culverts & Chases
What are the deficiencies? Is stormwater still conveyed as
intended?
Is there documentation of acceptance by ownership?
(Same ?s for section V)
Subject: Callout
Page Label: 15
Author: dmogen
Date: 12/23/2021 3:20:55 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:20:55 PM
Color:
Layer:
Space:
I don't believe there are any
critical embankments (detention
ponds, major channels, etc)
associated with this project so
this is ok.
Subject: Re: Callout
Page Label: 15
Author: Daniel Hull
Date: 12/23/2021 3:20:43 PM
Status:
Color:
Layer:
Space:
The comment is noted.
Subject: Text Box
Page Label: 17
Author: dmogen
Date: 12/23/2021 3:26:20 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:26:20 PM
Color:
Layer:
Space:
Can eliminate pages that don't
apply to the project.
Subject: Re: Text Box
Page Label: 17
Author: Daniel Hull
Date: 12/23/2021 3:26:15 PM
Status:
Color:
Layer:
Space:
The page was removed.
Subject: Text Box
Page Label: 18
Author: dmogen
Date: 12/23/2021 3:27:13 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:27:13 PM
Color:
Layer:
Space:
Can eliminate pages that don't
apply to the project.
Multifamily – Cycle Apts Date: 6/15/2020
, 1326, 1325, 1381, 1323, 1321, 1318, 1385, 1380, 1386, 1315, 1314, 1313, 1312, 1310, 1307, 1305, 1304,
meet the compaction requirements as specified in the project geotechnical report or comply with the
uld be compacted within a moisture content range of 2% below to 2% above optimum moisture content
imum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction.
r/engineer. - We do not have records of compaction but industry standard was followed.
ements
compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction
Stormwater (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas
nce with ASTM D698).
tection - FCSCM Chapter 9, Section 7.0
ular bedding of the gradation and thickness indicated on the approved construction plans.
nstead of granular bedding and is the material shown on the approved construction plans or was an
entation for an approved equal.
hown on the approved construction plans with a D50 of VL.
own on the approved construction plans and extends to the horizontal limits shown.
epth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.)
- FCSCM Vol.1, Ch.7
I don't believe there are any critical embankments
(detention ponds, major channels, etc) associated
with this project so this is ok.
al Requirements Submitted?/R
date, inspector name, meeting
(i.e. DCP, initial erosion control
Can eliminate pages that
don't apply to the project.
sediment)
sediment)
d to the top
☐ ☐ ☐
record depth in
☐ ☐ ☐ of compaction
Protection During Construction
otherwise prote
Can eliminate pages that
don't apply to the project.
Subject: Re: Text Box
Page Label: 18
Author: Daniel Hull
Date: 12/23/2021 3:26:31 PM
Status:
Color:
Layer:
Space:
The page was removed.
Subject: Callout
Page Label: 21
Author: dmogen
Date: 12/23/2021 3:03:51 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:03:51 PM
Color:
Layer:
Space:
Any notes of electric conduit
running thru rain gardens and
modifications that were made?
Please provide.
Subject: Re: Callout
Page Label: 21
Author: Daniel Hull
Date: 12/23/2021 2:46:51 PM
Status:
Color:
Layer:
Space:
This comment was resolved at
the field meeting.
Subject: Callout
Page Label: 21
Author: dmogen
Date: 12/23/2021 2:59:55 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
2:59:55 PM
Color:
Layer:
Space:
Any additional pictures of
construction with the wrapped
conduits, etc?
Subject: Re: Callout
Page Label: 21
Author: Daniel Hull
Date: 12/23/2021 3:02:43 PM
Status:
Color:
Layer:
Space:
Owner has provided all available
pictures from construction.
Any notes of
electric conduit
running thru rain
gardens and
modifications that
were made?
Please provide.
Any additional
pictures of
construction with
the wrapped
conduits, etc?
Subject: Text Box
Page Label: 22
Author: dmogen
Date: 12/23/2021 3:27:19 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:27:19 PM
Color:
Layer:
Space:
Can eliminate pages that don't
apply to the project.
Subject: Re: Text Box
Page Label: 22
Author: Daniel Hull
Date: 12/23/2021 3:26:36 PM
Status:
Color:
Layer:
Space:
The page was removed.
Subject: Text Box
Page Label: 23
Author: dmogen
Date: 12/23/2021 3:27:25 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:27:25 PM
Color:
Layer:
Space:
Can eliminate pages that don't
apply to the project.
Subject: Re: Text Box
Page Label: 23
Author: Daniel Hull
Date: 12/23/2021 3:26:41 PM
Status:
Color:
Layer:
Space:
The page was removed.
Subject: Text Box
Page Label: 24
Author: dmogen
Date: 12/23/2021 3:27:30 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:27:30 PM
Color:
Layer:
Space:
Can eliminate pages that don't
apply to the project.
Can eliminate pages that
don't apply to the project.
☐ ☐ ☐
☐ ☐ ☐ Provide photographs befor
“ripping”
☐ ☐ ☐ Provide photograph
☐ ☐ ☐ Provide photograph
Intake
☐ ☐ ☐
Forebay (If Applicable)
☐ ☐ ☐ Provide photograph
Can eliminate pages that
don't apply to the project.
☐ ☐ ☐
Filter Media
☐ ☐ ☐
Provide load ticket, photograp
record depth installed
☐ ☐ ☐
Provide load ticket, photograp
record depth installed
☐ ☐ ☐
er Structural Components
☐ ☐ ☐
Landscaping
Can eliminate pages that
don't apply to the project.
Subject: Re: Text Box
Page Label: 24
Author: Daniel Hull
Date: 12/23/2021 3:26:46 PM
Status:
Color:
Layer:
Space:
The page was removed.
Subject: Text Box
Page Label: 25
Author: dmogen
Date: 12/23/2021 3:27:48 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:27:48 PM
Color:
Layer:
Space:
Can eliminate pages that don't
apply to the project.
Subject: Re: Text Box
Page Label: 25
Author: Daniel Hull
Date: 12/23/2021 3:26:50 PM
Status:
Color:
Layer:
Space:
The page was removed.
Subject: Text Box
Page Label: 26
Author: dmogen
Date: 12/23/2021 3:28:03 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:28:03 PM
Color:
Layer:
Space:
Can eliminate pages that don't
apply to the project.
Subject: Re: Text Box
Page Label: 26
Author: Daniel Hull
Date: 12/23/2021 3:26:55 PM
Status:
Color:
Layer:
Space:
The page was removed.
Can eliminate pages that
don't apply to the project.
☐ ☐ Provide photograph
☐ ☐ Provide photograph
☐ ☐ Provide photograph
meable Liner
☐ ☐ Provide specifications of delivered
material
☐ ☐
☐ ☐ Provide photograph (if necessary)
Can eliminate pages that
don't apply to the project.
Subject: Text Box
Page Label: 27
Author: dmogen
Date: 12/23/2021 3:27:06 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:27:06 PM
Color:
Layer:
Space:
Can eliminate pages that don't
apply to the project.
Subject: Re: Text Box
Page Label: 27
Author: Daniel Hull
Date: 12/23/2021 3:27:00 PM
Status:
Color:
Layer:
Space:
The page was removed.
Subject: Callout
Page Label: 41
Author: dmogen
Date: 12/23/2021 3:43:44 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:43:44 PM
Color:
Layer:
Space:
It looks like all of the lot grading
certs merged together in
responses for address, lot,
permit, parcel, etc.
Can you please flatten before
combining the documents?
Subject: Re: Callout
Page Label: 41
Author: Daniel Hull
Date: 12/23/2021 3:43:41 PM
Status:
Color:
Layer:
Space:
The comment is noted.
Subject: Callout
Page Label: 78
Author: dmogen
Date: 12/23/2021 3:44:06 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:44:06 PM
Color:
Layer:
Space:
Please complete.
☐
Can eliminate pages that
don't apply to the project.
CERTIFICATION OF LOT GRADING
Pursuant to Fort Collins City Code § 26-544 & City Land Use Code § 3.3.2 (e)
Date:
Address:
Lot: Block:
Subdivision:
Permit Application #:
Larimer County Parcel #:
Larimer County Reception #:
(on development agreement)
I, (print) , a Colorado registered professional engineer, verify that construction
of all stormwater facilities and grading is complete and hereby submit this certification.
Please answer the following questions by initialing the appropriate response. For each question initialed “No,” attach an
explanation detailing how this will affect stormwater drainage for this lot and any adjacent lots.
1.Certification includes attached Stormwater-approved grading plan. (NOTE: City’s
Building Department does not approve grading plans).
2.Certification includes the attached as-built survey dated (must be within 60
days of the date the certification is submitted) accurately and truthfully depicting
elevations for:
Top of foundation/finished floor
Finished grade on each side of the structure
Quarter points along each lot line (not more than 50 feet apart)
No Yes
No Yes
Building 2
Exhibit A
February 8, 2021 Foothills Mall Redevelopment
312 E Foothills Parkway B1601304
Fort Collins, CO 80525 9725330003
3 20160032131
Daniel Hull
1/10/2019
It looks like all of the lot grading certs merged together in
responses for address, lot, permit, parcel, etc.
Can you please flatten before combining the documents?
Co
PE Stamp
Sign and date
Please complete.
Subject: Re: Callout
Page Label: 78
Author: Daniel Hull
Date: 12/23/2021 3:44:02 PM
Status:
Color:
Layer:
Space:
Completed
Subject: Callout
Page Label: 85
Author: dmogen
Date: 12/23/2021 3:31:06 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:31:06 PM
Color:
Layer:
Space:
Form says yes form this
building?
Subject: Re: Callout
Page Label: 85
Author: Daniel Hull
Date: 12/23/2021 3:31:00 PM
Status:
Color:
Layer:
Space:
The certification was revised.
Subject: Callout
Page Label: 89
Author: dmogen
Date: 4/1/2021 4:35:28 PM
Status:
Color:
Layer:
Space:
different address but still
duplicating from other building
forms.
Subject: Callout
Page Label: 269
Author: dmogen
Date: 12/23/2021 3:33:10 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:33:10 PM
Color:
Layer:
Space:
?
le due to paved areas adjacent to the building.
le since this does not apply to this lot.
le since there are no swales within the limits.
ted to the stormwater system. No downspouts
en areas.
Form says yes
form this building?
Pursuant to Fort Collins City Code § 26-544 & City Land U
Block:
Subdivi
Permit Applicatio
Larimer County Parc
Larimer County Recepti
(on development agree
, a Colorado registered profess
acilities and grading is complete and hereby submit this certif
following questions by initialing the appropriate response. Fo
ng how this will affect stormwater drainage for this lot and an
ng 10
, 2021
ord Road
s, CO 80525
different address
but still duplicating
from other building
forms.
ct me. ?
Subject: Re: Callout
Page Label: 269
Author: Daniel Hull
Date: 12/23/2021 3:33:04 PM
Status:
Color:
Layer:
Space:
This letter was replaced with the
a letter from Olsson.
Subject: Callout
Page Label: 269
Author: dmogen
Date: 12/23/2021 3:32:26 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:32:26 PM
Color:
Layer:
Space:
please include email. Although,
is this necessary to reference or
include if the as-built volume is
2376cf? Is there additional
media that should be added to
the rain garden with the "extra"
cross-section depth? The
depths of the aggregate/media
installed in the rain garden are
unclear.
Subject: Re: Callout
Page Label: 269
Author: Daniel Hull
Date: 12/23/2021 3:32:21 PM
Status:
Color:
Layer:
Space:
This letter was replaced with the
a letter from Olsson.
Subject: Callout
Page Label: 269
Author: dmogen
Date: 12/23/2021 3:33:24 PM
Status: Completed set by Daniel Hull on 12/23/2021 at
3:33:24 PM
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and site visit?
Subject: Re: Callout
Page Label: 269
Author: Daniel Hull
Date: 12/23/2021 3:33:19 PM
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This letter was replaced with the
a letter from Olsson.
17, 2020
Collins
ollege Avenue
CO 80524
arden RG-33 Verification
ndment to a Portion of Foothills Mall Redevelopment Planning Area 3
5, and 6 of Foothills Mall Redevelopment)
May Concern:
as evaluated the as-constructed survey information provided by The Weitz Company
14, 2019 related to rain garden RG-33 constructed in the northeast corner of Lot 3
Apartments project located adjacent to Foothills Mall. The design volume of the
was 1,165 cubic-feet (with an additional allowed reduction of 10% based on an
Dan Mogen dated August 2, 2018) and the as-constructed volume of the rain garden
pillway is 2,376 cubic-feet. The designed minimum surface area of the rain garden
uare-feet, and the as-constructed surface area is 613 square-feet. See attached
my professional opinion, and based solely on the as-constructed survey information
The Weitz Company, the as-constructed rain garden meets (or exceeds) the
ea and volume requirements set forth in the City-approved site civil construction
please include email. Although, is this
necessary to reference or include if the as-built
volume is 2376cf? Is there additional media that
should be added to the rain garden with the
"extra" cross-section depth? The depths of the
aggregate/media installed in the rain garden are
unclear.
y is 2,376 cubic-feet. The designed mini
feet, and the as-constructed surface area
professional opinion, and based solely on
Weitz Company, the as-constructed rain
nd volume requirements set forth in the C
questions or need additional information, p
ering, LLC
and site visit?