HomeMy WebLinkAboutLot Certifications - 06/27/2002Odom" & Aaaac, 10c,
1630 S.' iL9� Aveow
P 0, 64 270852 GTORMWATER
3w , e0 80527 RECEIVED
(970) 493-2808
57,42 (970) 495- 9735 JUN 19 2002
June 18, 2002
City of Fort Collins
Stormwater Utility
700 Wood Street
Fort Collins, CO 80526
RE: Drainage Certification for Lots 12D-12F, Harmony Ridge P.U.D. /ZE� /a�fz 70
Dear Sirs:
On June 18, 2002, we observed the site located on Lots 12D-12F of the Harmony Ridge P.U.D.
located west of Morning Dove Lane, north and east of Dusty Sage Drive, and south of Prairie
Ridge Drive. The site appeared to be final graded except as noted below.
In addition to our observation, Absolute Surveying obtained spot elevations at numerous spots
throughout the site. Please refer to the attached elevation sheet.
As there is no known final grading plan with spot elevations and individual drainage features,
this letter describes the drainage patterns that we observed.
• In general the west side of the buildings drained westerly away from the foundation to a
currently un-landscaped swale, which directs runoff south either towards Dusty Sage
Drive or a depression in the northwest intersection of Morning Dove Lane and Dusty
Sage Drive. The survey shows a concrete walk that runs southeast to northwest. This
sidewalk was either buried or removed near the location of Lot 12D. Runoff may be
intercepted by construction activities from Lots 12A-12C.
• The east side of the buildings drained easterly away from the foundation to Morning
Dove Lane, which directs runoff south to Dusty Sage Drive/Blue Sage Drive, most likely
to inlets located in Blue Sage Drive. These inlets appeared plugged with debris at the
time of the site visit.
• The northwest side of the building complex (north of Lot 12F) appears to drain northerly
away from the foundation to a swale, which then travels west and south around the
building. The northeast side of the building appears to drain northerly and then easterly
away from the foundation. There currently exists a sidewalk to the entrance of Lot 12F
that is not shown on the survey. The north side of the building appears to be only
partially final graded as there was some disturbance due to construction activities. The
sidewalk appeared to slope either northerly or northeasterly, although survey points
would be need to verify the grade.
• Lots 12E and 1213' shared entrance areas. The sidewalk for these two entrances are not
shown on the survey. Lot 12E contained a courtyard with a drain. The area and sidewalk
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south of Lot 12E garage sloped southerly towards Lot 12D. This may cause freezing on
Lot 12D sidewalk. The sidewalk for Lot 12D entrance appeared to slope easterly,
although survey points would be needed to verify the grade. A pipe exited near the
southeast corner of Lot 12E underneath the sidewalk, which appears to be from the
courtyard drain. Another pipe exited near the northeast corner of Lot 12D underneath the
sidewalk, which appears to be from the roof drain.
• The finished floor elevations appeared to be significantly different than those proposed
on the grading plan by TST.
• The proposed spot elevations given by Absolute Surveying were up to 0.6-feet different
than the existing spot elevations given by Absolute Surveying.
• The buildings have garden levels and walkout basements that are not shown on the
grading plan.
• The south side of this lot (Lots 12A-12C) are under construction.
Our recommendations were based on our observation on the dated noted above.
If you have any questions, please contact me at the above address or phone number.
James R. Loonan, P
10
r
Lots 12D-12F, Harmony Ridge P.U.D.
City of Fort Collins, Larimer County, Colorado
x 30.86, DENOTES TYPICAL SPOT ELEVATION
ww DENOTES TOP OF WINDOW WELL ELEVATION
(31.4) DENOTES DESIGN SPOT ELEVATA9,Ko X29.11
tI
X 37.55 �?
N M
M
X
M Ppp
X30.86
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°
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�'° F`'p0
(31.3i.0) l �° �a
a
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WW 31.70 X
31.18 LA e 2
.00
/ k
0 S {
° F�0
X 30.09
� X 1k• o /
29.87
00, X3e
/ X 29.32
30.76 ,
X29.12x >
0 29.64 X
O 29.17
28.89 �o /
28.28 X ps.
�� 00
9 �
27.66 00
NOTE: Elevations are based
on the Southwesterly corner
of Lot 12, Harmony Ridge
P.U.D. with an elevation of
25.00 feet, according to the
Site Plan prepared by
Absolute Surveying, Inc.
X 32.11
-e-
\ZQ �16
F
24.85
3
3.05
26.6
\X 28.44
/
/
/
\ WALK, CURB
\ & GUTTER
I
ABSOLUTE SURVEYING, INCORPORATED
Professional Land Surveyors Phone (970) 203-1552
2881 North Monroe Avenbii;"Loveland, Colorado 80538
Project: GRADE CERTIFICATION Lots 12D-12F, Harmony Ridge P.U.D.
Client: HAGEN BROTHERS
Drawn By: JSK Approved By: MFC Revisions:
Project No. 01-1741 A Date: 06-11-02 Scale: 1 "=30' Sheet No. 1 of 1