HomeMy WebLinkAbout8190 W. 38th AvenueThe Ciry of
7500 W EST 29TH AVENUE h e at
WHEAT RIDGE, CO 80215-6713 (303) 234-5900
City Admin. Fax k 2345924 Police Dept. Fax # 235-2949 uy l~idgA
- c
January 27, 1998
Mr. Anson Andrew, P.E.
Futura Engineering Inc.
12741 East Caley Avenue, Suite 126
Englewood, Colorado 80111
Re: Wheat Ridge Presbyterian Church Outdoor Worship Center,
8190 LLest 38°h Avenue - First Review Comments of Final
Drainage Study, Grading & Erosion Control Plan
Dear Mr. Andrew,
I have completed the first review of the above referenced
documents for the Wheat Ridge Presbyterian Church Outdoor Worship
Center received on January 14, 1997, and have the following
comments:
Drainage Study (Discussion)
Cover Page
1. Please provide P.E. seal and signature on the final approved
report.
Page 1
Property Description
1. Please provide additional discussion identifying adjacent
development to this site.
General Drainage Characteristics
1. Please provide discussion that confirms site is not within the
100-year flood plain and reference mat:erial provided in the
report appendices.
Method of Drainage Analysis
1. Please provide additional, numeric discussion regarding the
calculated 5 and 100-year historic rates of release.
2. Please identify and discuss off site flows.
3. Please discuss effect(s) of historic tlows on adjacent
properties.
1-1 RECVCLEL PnPEH
Anson Andrew, P.E.
Futura Eng., Inc.
Page 2
4. Please provide discussion on sub-basin size(s).
Page 2
1. Detention pond discussion needs to be delineated as separate
section in report.
2. Provide additional discussion regarding the 5 and 100-year
detention volumes required and provided.
3. Please pzovide the soil type that the proposed detention
pond release rates are based upon, and reference the source
for this information.
4. Check and discuss excess storm water passage effects.
Conclusion
l. Please discuss the effect(s) of developed flows on adjacent
properties. This discussion will also need to include
comparison of 5 and 100-year historic and developed flow rates
to confirm historic rates are equal to, or less than
developed.
Drainage Study (Appendix)
Standard Form SF-3 Historic
l. See comment 1 in Conclusion Section.
2. Please reference soil type for detention pond release rate
calculations.
Drainage, Grading/Erosion Control Plan
1. Please provide (when appropriate) P.E. stamp and signature.
2. Minimum detention pond freeboard depth per JeffCo. Standards
is 1-foot. Please revise plan and report as needed.
3. Please note the existing grade of west 38`" Avenue.
4. Please provide typical cross sections for property lines noted
to confirm acceptable longitudinal and cross-slope grades to
adjacent properties.
Anson Andrew, P.E.
Futura Eng., Inc.
Page 3
5. Please note the location and elevation of City benchmarks or
benchmarks referenced to the City.
6. Please revise proposed chase section detail to City standard
details provided.
7. Please provide note regarding the removal and replacement of
existing public improvements to City standards.
8. Please note all surface types proposed and grades throughout
the site.
9. Please provide the red-lined note regarding maintenance of
public improvements during construction.
10. Please note on the plan the single location of the required
tracking pad, and provide/reference the appropriate details.
Subdivision Plat/Legal Description
l. Please provide the necessary legal documentation to confirm
ownership and said boundary description of the designated
property.
Any questions related to these plat corrections can be addressed
to Mr. John McGuire at 235-2858.
Application for Minor Dumping/Landfill
Prior to the commencement of any onsite
for Dumping/Landfill Permit, along with
submitted for review and approval. For
submittal in the second review package,
provided.
?ermit
grading, an Application
fees due will need to be
your information and
a copy of this permit is
Traffic Engineering
A copy of the Urban Street construction plans was forwarded to
Mr. Steve Nguyen, P.E. (235-2862) for review with no comments at
this time.
Anson Andrew, P.E.
Futura Eng., Inc.
Page 4
Right-of-Way Construction Permit(s)/Licensing
Prior to any construction/modification of the public improvements
on West 38`h Avenue, the necessary right-of-way construction
permit(s) and respective licensing will need to be processed by
the City.
PLEASE RETURN ALL RED-LINED PRINTS WITH THE SECOND SUBMITTAL
If You ~ave any questions, please contact me at 235-2868.
ST rely, ~
, G IC~iudson, M.P.A.
Development Review Engineer
cc: Dave Kotecki, Sr. Project Engineer
Steve Nguyen, Traffic Engineer
John McGuire, City Surveyor
Meredith Reckert, Sr. Planner
File
Zt~9 5,sgm.crt~~ Gr1~c~c
T> Z~f. ~ a8 The City of
7500 WEST 29TH AVENUE I
WHEAT RIDGE, CO 80215-6713 (303) 234-5900 GWhe at
City Admin. Fax # 2345924 Police Dept Fax N 235-2949 ~idge
January 27, 1998
Mr. Anson Andrew, P.E. f`
Futura Engineering Inc.
F
12741 East Caley AVenue, Suite 126 . ~
Englewood, Colorado 80111 , _
Re: Wheat Ridge Presbyterian Church Outdoor Worship Center,
~,~~~h~v~ri,iiew First Review Comments of Final
Drainage Stuiiy, Gr'ading & Erosion Control Plan
Dear Mr. Andrew,
I have completed the first review of the above referenced
documents for the Wheat Ridge Presbyterian Church Outdoor Worship
Center received on January 14, 1997, and have the following
comments:
Drainage Study (Discussion)
Cover Page
1. Please provide P.E. seal and signature on the final approved
OIL
report.
Page 1
Property Description
0It1. Please provide additional discussion identifying adjacent
development to this site.
General Drainage Characteristics
bKl. Please provide discussion that confirms site is not within the
100-year flood plain and reference material provided in the
report appendices.
Method of Drainage Analysis
yj~l. Please provide additional, numeric discussion regarding the
calculated 5 and 100-year historic ra-les of release.
oI-2- Please identify and discuss off site ilows.
er-3. Please discuss effect(s) of historic tlows on adjacent
properties.
0 RECYCLED PnPER
Anson Andrew, P.E.
Futura Eng., Inc.
Page 2
OF4. Please provide discussion on sub-basin size(s).
Page 2
~1. Detention pond discussion needs to be delineated as separate
section in report.
2. Provide additional discussion regarding the S and 100-year
09- detention volumes required and provided.
4C3. Please pzovide the soil type that the proposed detention
pond release rates are based upon, and reference the source
for this information.
6h. Check and discuss excess storm water passage effects.
onclusion
Please discuss the effect(s) of developed flows on adjacent
properties. This discussion will also need to include
comparison of 5 and 100-year historic and developed flow rates
to confirm historic rates are equal to, or less than
developed.
Drainage Study (Appendix)
Standard Form SF-3 Historic
OJ(J_. See comment 1 in Conclusion Section.
2. Please reference soil type for detention pond release rate
01- calculations.
Drainage, Grading/Erosion Control Plan
ofl. Please provide (when appropriate) P.E. stamp and signature.
b~ Minimum detention pond freeboard depth per JeffCo. Standards
is 1-foot. Please revise plan and report as needed.
t-y;l Please note the existing grade of west 38t' Avenue.
6r(. Please provide typical cross sections for property lines noted
to confirm acceptable longitudinal and cross-slope grades to
adjacent properties,
Anson Andrew, P.E.
Futura Eng., Inc.
Page 3
0~.. Please note the location and elevation of City benchmarks or
benchmarks referenced to the City.
Please revise proposed chase section detail to City standard
details provided.
o~. Please provide note regarding the removal and replacement of
existing public improvements to City standards.
ptl Please note all surface types proposed and grades throughout
the site.
bIL Please provide the red-lined note regarding maintenance of
public improvements during construction.
eK. Please note on the plan the single location of the required
tracking pad, and provide/reference the appropriate details.
Subdivision Plat/Legal Description (%or W~`e w/ 1 ,~%95
1. Please provide the necessary legal documentation to confirm
ownership and said boundary description of the designated
property.
Any questions related to these plat corrections can be addressed
to Mr. John McGuire at 235-2858.
Application for Minor Dumping/Landfill Permit f~csC po+1t W~~3 S%~CiMrTTAI-
Prior to the commencement of any onsite grading, an Application
for Dumping/Landfill Permit, along with fees due will need to be
submitted for review and approval. For your information and
submittal in the second review package, a copy of this permit is
provided.
affic Engineering
A copy of the Urban Street construction plans was forwarded to
Mr. Steve Nguyen, P.E. (235-2862) for review with no comments at
this time.
Anson Andrew, P.E.
Futura Eng., Inc.
Page 4
Right-of-Way Construction Permit(s)/Licensing
Prior to any construction/modification of the public improvements
on West 38`h Avenue, the necessary right-of-way construction
permit(s) and respective licensing will need to be processed by
the City.
PLEASE RETURN ALL RED-LINED PRINTS WITH THE SECOND SUBMITTAL
If qou ~ave any questions, please contact me at.235-2868.
S'~n rely,
G eg udson, M.P.A.
Development Review Engineer
cc: Dave Kotecki, Sr. Project Engineer
Steve Nguyen, Traffic Engineer
John McGuire, City Surveyor
Meredith Reckert, Sr. Planner
File
we 'n2~5 . G1ti.n.e.~
' c ~nr►Ckd'.
DRAINAGE REPORT
OIITLINE AND RE4IIIRED INFORMATION GIIIDELINE
~_TITLE PAGE
oKA. Type report (prelim, final flood hazard)
pAB. Project name
09C. Preparer name, firm, dat ~ I
D. P.E. seal of preparer ,,.,I thQ,
INTRODUCTI ON
p~lA, Site Location
OIL1) City, county, street grid
ti,F2 ) Adjacent development
Wr^'.
~ Site Description
oKl) Existing topography, ground cover, use, etc.
2) Existing drainage facilities, major channels,
Flood hazard zones and sttidies, irrigation ditches
ojCC. Proposed Project Description
0,4D. Flood Hazard and Drainage Studies Relevant to Site
s'
..,Z tIISTORIC DRAINAGE SYSTEM (Discuss the following)
Major Basin
~1) Relationship to major basin channel
2) Major basin drainage characteristics, topography,
Of~ runoff, use, cover, etc.
B. Sub-Basin and Site Drainage
1)91) Initial and majar storms
r.192) Off-site flows
drainage patterns:
O(L3) Existing ~hdischarge fromVSite
land flow, volumes, points of erties
ao4) Effect of historic flows upon adjacent prop
1
~
t'
~PROPOSED (DEVELOPED) DRAINAGE SYSTEM (DISCUSS THE FOLLOWING)
A. Criteria
p4i ) Size basin and sub-b
oRQ) Hydrologic method ( ati _ or CUHP)
0,26 Design storm frequen initial and major
B. Runof f
pX1) Developed flow rates and paths acent erties
Ny,) Effect of developed flows upon adj ProP
C. Detention
~a) Volumes required and provided
p~) Release rates and method of release
N~ Excess storm water passage
~ Streets N/p,
1;K~ Depth and velocity of flow for initial
and major storms
Z` Storm drainage systems
~ Open Channel Flow
Type channel (lining)
~ N,aximum depth and velocity
~ Storm Sewers and Culverts
/
V~ CONCLUSIONS
✓
A. Discuss Impact of Improvement
p$y Benefits - Does improvement reduce existing
drainage problems?
~ Adverse with solutions to mitigate impact
BState Compliance with Applicable Criteria
"
Detention ponds
Depth and velocity of street flows
P,~ Channel flow depth and velocity
I"
~ Areas In Flood Hazard Zone Meet Flood Plain Section Of
the Wheat Ridge Zoning Ordinance (special use permit
may be required).
2
VI. APPENDICES
~ Hydrologic and Hydraulic Computations
Runoff (Historic) ,
/
a. Historic off-site + site for as many design
points as required.
p~(1) Separate time of concentration (Tc) for each
design point (Rational Method)
6(42) Runoff coeff. or permeability coeff. from
table 3-1* of the Runoff chapter
OK3) Existing drainage facilities carrying flows
must include flow for entire tributary area
for each design point.
Irrigation ditch flows
Runoff (Developed)
, Off-site + site for as many design
~ points as required
0/4) Separate time of concentration (Tc) for each
design point (Rational Method)
A) Runoff coeff. or permeability coeff. from
O
Table 3-1* of the Runoff chapter
o~ Existing drainage facilities carrying flows-
must include flow for entire tributary area
for each design point.
n~~) Irrigation ditch flows
~ Detention
Storage Volumes - S year and 100 year:
i Release rates - 5-year and 100-year
Pond Outlet - control structures
piG-Outlet control structure type
Vf-[Jse appropriate outlet discharge
c~ lculations-includes offsite flows
.~Consider head at entrance
T~~Povide excess capacity for grates
0(~~~tJse restricter plate to reduce inlet
a when necessary
e4-Compute outlet velocity and provide
energy dissipator if velocity exceeds
maximum pernissible channel velocity
~9-Chec): excess storm water passage
effects
~ Size outlet structures for Parking areas
Depths of ponding in parking areas, durations
t~ of storage for each storm.
* Reference the UDFCD cr:teria
3
~
Streets npof A02lI rw~
y/. Compute depths and velocity of
initial and major storm
Inlet capacities and depths at
Meet street standards in Table
t the Streets chapter
B
5
5
• d
flow, for
inlet
6-1 & 6-2* of
Roughness coefficient
Trickle channel
Depth and velocity for initial and
major storms
Channel protection
Minimum freeboard
Hydraulic grade line
Hydraulic Structures-pipes, culverts, inlets, etc.
~a.
a
Culvert capacity using standard nomographs
j
of the Inlets & Culverts Chapter
ach design section
ptl-b.
Storm sewer capacity at e
~t,
Irilet capacity
Flow depth or headwater depth at inlet
4IAe.
Drops
,
N f .
Weirs
Streets, gutters, and crosspans
F,nergy dissipators
Hydraulic grade lines
Minimum and maximum velocities
Drainage
Plan Sheet(s)
~ Site Drainage Plan - Show the following:
1/ Site location map
p~a. Major drainage basin
p b. Sub-basin.boundaries and acreage
aik• Floodway and flood plain area
utd. Site location
p'e. Existing and proposed 1-foot contours
based on City datum (existing contours
to extend at least SO' beyond property
line.)
otp. I,ocation and elevation of City benchmarks
or benchmarks referenced to. City.
pj4. Existing and proposed property lines
pXI~ . Present drainage easements
S,tr~~e~t names and grades
0/~ ~ ot r-I p
* ReS( rericc the UDFCD criteria
4
Open Channel Flow
p/1 a.
Y-b .
o/(Id•
r/W •
Ob-
7500 WEST 29TH AVENUE • WHEAT RIDGE, COLORADO 80215
June 2, 1998
Mr. Anson Andrew, P.E.
Futura Engineering, Inc.
12741 East Caley Avenue, Suite 126
Englewood, Colorado 80111
The Ciry of ~~pF WHEqT PO
i
GWheat ~ m
GRidge
cOZO R A~O
Re: Wheat Ridge Presbyterian Church Outdoor Worship Center, 9180
West 38"' Avenue-.Approval of Final Drainage Report, and
Grading/Erosion Control Plan
Dear Mr. Andrew,
This letter is to inform you that the final drainage report, and
the grading/erosion control plan for the above referenced project
have been reviewed and approved for construction. Please be
aware of the following items regarding the construction of the
project:
1. The proposed drainage facilities sliall be constructed and
approved by the City of Wheat Ridge prior to issuance of the
Temporary Certificate of Occupancy.
2. Erosion control for the project shall be placed in conformance
with the approved drainage/erosion control plan and shall be
maintained as needed during the course of construction.
3. All drainage improvements shall be constructed in conformance
with the approved drainage report and plan.
4. It w.ill be the responsibility of the contractor for the
project to repair any damage to the existing public
improvements on West 38t" Avenue as a result of related
construction traffic in the area. Also, the contractor will
be responsible for maintaining West 38t" Avenue on a regular
basis such they are free of construction debris and tracking
from construction traffic accessing the site.
5. Upon completion of the drainage improvements the engineer,
Mr. Anson And'rew, P.E., Futura Engineering, Inc. shall provide
to the City of Wheat Ridge a letter of certification stating
(303) 234-5900 • ADMINISTRATION FAX: 234-5924 POLICE DEPARTMENT FAX: 235-2949
Mr. Anson Andrew, P.E.
Futura Eng., Inc.
Page 2
that the various improvements, as defined in the drainage
report and plan, have been accurately surveyed to confirm
that their construction is in accordance with these
documents. The certification letter shall be written and
stamped by the engineer who prepared the drainage report, and
shall be submitted for review and approval by the City prior
to issuance of the Certificate of Occupancy.
If you~ve any questions, please contact me at 235-2868.
Si ce 1y, %
/
ry ef~_
Greg Knudson, M.P.A.
Development Review Engineer
GWK
cc: Bob Goebel, Public works Director
Alan White, Planning & Development Director
Dave Kotecki, Sr. Project Engineer
Steve Nguyen, Traffic Engineer
Meredith Reckert, Senior Planner
John McGuire, City Surveyor
File
The Ciry of
7500 WEST 29TH AVENUE • WHEAT RIDGE, COLORADO 80215 GWheat
vRidge
- APPLICATION FOR M/NOR DUMP/NG/LANDFILL.PERMIT
NAME OF APPLICANT: ADDRESS OF FILL: Q Iego t',D°
APPLICANT'S ADDRESS: ~ O
ii~n
~o. svrro
DATE OF APPLICATION: 6- (0 Ciq
Ali permits shall be applied for through the Public Works Department. An approved permit is effective
for a period of one (1) year from the date of issue and may be renewed. All fees shall be in accordance
with those fees established by the Uniform Building Code or other applicable City adopted Resolutions
or Ordinances.
Nofe: All public improvements, when constructed, shali be maintained (by the respective
individual(s) and/or company responsibie for the construction of that pubiic and/or private
improvement in the respective development) on a daily basis, or as needed, such that they are
free of mud and other construction debris tracking from the site. Failure to comply with this
requirement wiil result in the enforcement of Article Ii, Specified Nuisances, Section 15-21 (3)
of the City of Wheat Ridge Code of Laws.
MINOR EXCAVATION AND FILL PERMITS
1. 1-50 cubic yards: No permit is required for dumping or excavation of earth materials, which do not
exceed fifty (50) cubic yards, provided, however, that any fill deposited is on natural terrain of less than
three (3) horizontal to one (1) vertical slope, or such fill is less than three (3) feet irt depth and is not
intended to support permanent structures, and in addition, such fill or excavation does not obstruct or
otherwise adversely affect any drainage way. Should any of the above standards be exceeded, or a
drainage way be affected, a permit shall be required under the guidelines for No. 2.
2. 51 S00 cubicyards: Dumping or excavation of earth materials not exceeding 500 cubic yards may
be allowed with a permit approved by the City Engineer. All applications are to be submitted on the
appropriate compieted application form and shall be accompanied by the appropriate fee and sketch
pian indicating the following information before the permit will be issued.
A. Location and dimensions of all property boundaries and structures on the site.
B. Location and extent of areas to be filled and/or excavated
C. Location of existing and proposed drainage ways, irrigation ditches, etc., and
indication of how and where historic runoff wiil be maintained on and throughout the site.
D. Cross section area to be filled and/or excavated indicating originai slope, new siope and
depth of fiiL
Page 1 of 3
(303) 234-5900 • ADMINISTRATION FAX: 234-5924 • POLICE DEPARTMENT FAX: 235-2949
E. Statement which indicates the proposed use or purpose for said fill or excavation.
F. Relative elevation of adjacent properties.
G. Erosion control pian showing placement of control devices such as hay bales, etc.
3. 501-20,000 cubic yards: Operations in which earth material fill or excavation exceeds 500 cubic
yards but does not exceed 20,000 cubic yards may be allowed by a permit issued by the City Engineer
after review of an application and supporting information. The foilowing information shall be submitted
with the required application form: .
A. A site plan, prepared and signed by a Colorado registered professional engineer, at a scale
of no less than one inch to twenty feet (1:20) which iliustrates the following:
1. Location and dimensions of all property boundaries and structures on the site.
2. Location and extent of areas to be filled and/or excavated.
3. Location of existing waterways and drainage courses indicating any changes: (For
a site containing an established irrigation ditch, a letter of approvai from the
appropriate ditch company shall be required). .
4. Location of existing and proposed points of ingress.
5. Location and extent of existing vegetation, proposed changes in such vegetation and
methods of rehabilitation on site vegetation after earthwork operations are compiete.
6. Erosion control plan.
7. Grading plan with existing (dashed lines) and proposed (solid lines) ground contours
with contour intervals of two feet and spot elevations.
8. At least two cross sections (east to west and north to south) through the site showing
depth of fiil andlor excavation.
9. A drainage report my be required if site runoff characteristics are changed.
10. Relative elevations of adjacent properties and structures.
11. Statement or purpose of in4ended fill or excavation.
4. Performance Standards: The following provisions shall apply to ali Minor Excavation and Fill
Permits: '
A. Rehabilitation: Within thirty (30) days after cessation of filling and/or excavation,
rehabilitation for the site shall have been completed in accordance with the approved plans.
Rehabilitation shail consist of leveling, grading, landscaping, or any combination thereof to
minimize potential erosion and be acceptable to the City Engineer.
B. Debris: Debris and/or contaminants shali not be used except with the approvai of the City
Engineer.
Page 2 of 3
"For the purpose of this Section, the term debris shall have the same meaning as the terms
"garbage, trash, orjunk" as defined in the City of Wheat Ridge Code of Laws, Section 20-21."
In no-case shali debris or contaminates identified or ciassified as hazardous waste by local,
state, or federal agencies be used as fill in any fill areas within the City of Wheat Ridge.
C. Excavation and/or fiil areas shall be graded to facilitate weed control until final.grades are
set and site rehabilitation and use occur (must be leveled with side slopes not to exceed 3
to 1).
5. Permit Fees`
50 cubic yards or less $10.00
51 to 100 cubic yards $15.00 ~x
101 to 1000 cubic yards (CY)
for the first 100 CY $15.00
pius each additional 100 CY or fraction thereof $ 5.00
1001 to 10,000 cubic yards (CY)
for the first 1000 CY $60.00 _
plus for each additional 1000 CY or fraction thereof $ 4.45
10,000 cubic yards and over $100.00
a ~(7 q (&S
*City of Wheat Ridge Code of Laws Section 5-76.
All permits shall be appiied for prior to the start of fill deposition or excavation operations. Any permit
applied for after cutting or filling operations on site are in progress shall be subject to a double fee and
other penalties as prescribed by the City of Wheat Ridge Code of Laws, Appendix A, Section 24.13.
6. Any fili requested under this permit within the 100 year flood zone MUST COMPLY WITH THE CITY
OF WHEAT RIDGE CODE OF LAWS, SECTION 26-201, FLOOD PLAINZONING ORDINANCE:
I HEREBY ACKNOWLEDGE THAT THIS APPLICATION IS CORRECT AND I UNDERSTAND THAT
I CANNOT START THIS PROJECT UNTIL THIS APPLICATION IS APPROVED. I SHALL COMPLY
WITH THE LAWS OF THE STATE OF COLORADO AND WITH THE ZONING REGULATIONS AND
BUILDING CODE OF THE CITY OF WHEAT RIDGE. ANY VIOLATION OF THE ABOVE TERMS
WILL CAUSE IMMEDIATE REVOCATION OF THIS PERMIT AND COMMENCEMENT OF
ENFORCEMENT PROCEEDINGS BY THE CITY OF WHEAT RIDGE. THIS APPROVED PERMIT
WILL BE KEPT IN MY POSSESSION OR PERMANENTLY ON THE JOB SITE.
APPLICANT: CITY OF WHEAT RIDGE:
4pplicant's '1~10 ~ e~P~
Signature City Engineer
Owner's Signature
(if different than above)
6,1111q8
Approval D&te ,
Page 3 of 3