HomeMy WebLinkAboutpitkin.bldg.273707200002 (2012)DOCUMENT
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Certificate of Occupancy or Letter of Completion
Permits
Final Inspections
Any Supporting Documents
Site Plans
(NOTE: All structural plans will be grayed out. If you require the ability to see structural
plans, you must have a letter from the owner stating you are allowed to have plans. This
letter must be submitted to Pitkin County Community Development Department)
GRUBBING AND EARTHMOVING PERMIT APPLICATION
oor��CLEARING,
130 S Galena Street. - Aspen, CO .81611 -7�7
970-920-5524 Fax 97D-920-5439 Permit # (! /_%�.. paa/1M
�
www.asoenoitkin.com
Receipt #
VALID PERMIT MUST BE KEPT ON SITE AT ALL TIMES
Permit valid for one year unless otherwise specified.
1. Job Address:
/ TA• TR,A1 ASl /
2. Legal description of property:
3. Owner(s)'s Name: Contact Number. Mailing Address:
L L �i `C • L s ` z(! W/ / < ?PL. D. BGb /b�6f143
4. Owner's Autho zed Agent: Contact Number. Mailing Address:
5. Contractor's Nam . Contact Number. Maili g Address:
p 4M7x9,1 c- S •oilOW, Z'Wl'r All
6. Architect or Engineer on Record: Contact Number. Mailing Address:
-zm .JON.i lojemd /ed //GAJ Crll 5r 'ItZco U/Mf� lc
7. Parce D number of property where work will occur:
Check httpJ/www.aspenpi in.com/De artmeni IAssessor or call the
2�3
Pitkin County Assessor's Office at 970-920-5160 for the parcel ID number.
8. Property also known as: (Provide a detailed map showing the location at legible scale)
9. Land use approval number(s):
10. Type of work:
Berm(s) Trench(es) Trail(s) Undergrounding Utilities
Ponds (a) or other water diversions) Clearing/Grubbing Site Grading
✓Other. yeryi1L Illm-roA-tr hal EMi," !2i 5Y�KL
r
11. Type of material to be excavated or placed on property: /
Ila. Material will be brought from: 111A 11 b. Is the material possibly contaminated? Yes No r/
11 c. Excavated material will be taken to: Ailj
12. Description of work: 04
Total acreage or square footage of disturbance:
Total cubic yards of material moved:
Max cut depth: Max fill depth: N
13- Will the project result in disturbance of a 1 acre of land? Yes No
13a, If you answered "Yes", submit a copy of your state Construction Stormwater Permit or R -Factor waiver. Information on this permit is
available at: http:/Aw .cdphe.state.m.usAvq/PemfsUnit/stormwater/mnstruction.html.
14. Is any portion of the project already complete? If yes, give reason and date(s) of prior construction activity.
15. Will the project disturb/result in removal of any vegetation? Yes No 1001,
15a. If you answered "Yes" submit a revegetation plan, including a plant list with scientific names of species, planting schedule and method
of irrigation. The County's Revegetation Guidelines are available at: hftp://www.aspenpitkin.6omlDepartmentstPublic-Works/Land-
Management.
151b. How will you prevent the establishment of noxious weeds at the project? 7f-CWI#V /A! �.i/ST71✓6'
wiVrAdA-1
16. Will the project result in disturbance of any wetlands or riparian areas? Yes No
t6a. If you answered "Yes", submit a description of your revegetatioNmitigation plan, including a plant list with sclenfific names of species,
planting schedule and method of irrigation. Also submit a copy of your U.S. Army Corps of Engineers Sec. 404 permit in connection will
any disturbance of "jurisdictional waters" of the U.S. Contact the U.S. Army Corps of Engineers in Grand Junction (970-243-1199) for
information on Sec. 404 permit requirements.
Earthmoving Permit 2011.x1s UI` -Tc)
000001 01 CS yI ���
Q
9ow
I
17. Will the project involve work in the Pitkin County Right of Way? Yes No
17a, If you answered "Yes" a County Right of Way Work Permit must be obtained prior to commencing work. Information on this permit is
available at: http://www.aspenpitkin.wm/Departments/Publio-Works/Engineering-Road-Bridge or by calling Public Works at 970-920-
- 18. Will the project disturb/involve work in the 100 -year flood plain? Yes No
18a. If you answered "Yes" a County Floodplain Development Permit must be obtained prior to commencing work. Information on this permit
is available at: hftp:/Aw .aspenpitkin.coMDepartments/Community-Development-Pitkin-County/Planningand-Zoning/Land-Use-
Engineering/.
Having carefully read the requirements, I (Applicant) hereby agree to the terms and conditions described within. This form is a permit
only when validated by County staff. Work started without a permit will be subject to Pitkin County enforcement action and charged
double permit fees.
19. Signature of Applicant:
19a. Date:
I ,44q
20. Signatu of roperty, Owner(s):
20a. Date:
FOR STAFF USE ONLY DO NOT WRITE BELOW THIS
LINE):
21. Additional Terms and Conditions of Permit (check all that apply): -
At the time of issuance of this permit you are required to post $ as financial security to ensure successful
completion of your revegetation plan. These monies will be held for two growing seasons from the date of completion of the project and
will only be released at that time if a site visit by Pitkin County Zoning confirms that successful revegetation has been accomplished.
Applicant is obligated to contact Pitkin County Zoning (970429-2799) to schedule the required two-year site visit. The monies will be
forfeited if successful revegetation is not confirmed after two growing seasons, or if Applicant fails to timely schedule the required site
visit.
Documentation of decreed water rights is required.
_ Documentation of State Engineer approval of a jurisdictional s'¢ed dam, or documentation of filing of a Notice of Intent to
Construct a Non -Jurisdictional Water Impoundment Structure (in the case of non jurisdictional size dam) is required.
Other.
Minor Clearing, Grading, Grubbing. and Earthmoving Permit Application (less than 100 cy): $415.00
(Flat fee due at submittal)
Major Clearing, Grading, Grubbing and Earthmoving Permit Application (more than 100 cy): $643.00
(Flat fee due at submittal)
The following additional referral fees may be required to be paid prior to issuance of this permit for major projects:
County Engineer Referral Fee: $225 -
Additional Flat Fee for Applications Involving Large Scale Undergrounding of Utilities &Earthmoving Projects:$225 "- —'---�
You will also be invoiced by Pitkin County Staff for any review and follow up inspection time exceeding 3,hours at a rate of $150/hr. . r
Date Permit Applicatior
Permit Flat Fee (due at submittal): Check #
Received:
Additional Fees (due at issuance): Check #
Date Pemut Issued:
-
TOTAL FEE (no refunds):
22. Staff Comments:
23. Approved by Pitkin County Engineer (if req'd):
23a. Date:
� /
f
24. Approved by Pitkin County revegetation specialist:
24a. Date: qq
U,
25. Approved by Pitkin County Planning/Zoning:
25a. Date,
Earthmoving Permit 2011.x1s 8 1 11
000002
1124 Red Mountain Road 2012-463.001 �L October 2012
DRAINAGE AND EROSION CONTROL REPORT
DRAINAGE CONTROL SYSTEM REPAIR
1 124 RED MOUNTAIN ROAD, ASPEN, COLORADO
6 Drainage and Erosion Control Report
000003
October 2012
Prepared by
SSGM
I 1 8 WEST SIXTH STREET, SUITE 200
GLENWOOD SPRINGS, CO 8 1 601
970.945.1 004
970.945.5948 Fax
1124 Red Mountain Road 2012-1163.001
TABLE OF CONTENTS
1.0 Introduction
2.0 Existing Conditions
3.0 Proposed Conditions
3.1 Drainage Analysis
3.2 Hydrologic Criteria
3.3 Drainage Improvement Recommendations
4.0 Erosion Control
5.0 Operation and Maintenance
5.1 Pond Outflow and Overflow
6.0 References
LIST OF APPENDICES
Appendix A Design Calculations
Appendix B Drawings
6Drainage and Erosion Control Report
000004
October 2012
1-1
2-1
3-2
3-2
3-2
3-4
4-4
5-5
Error! Bookmark not defined.
6-5
1124 Red Mountain Road 2012-463.001
1.0 Introduction
October 2012
SGM, Inc. was requested to assist with the analysis and remediation of an odor problem
emanating from a portion of the drainage system of the residence at 1124 Red Mountain
Road. Extensive efforts to trace the piping systems and find the source of the odors have
been conducted by Aspen Constructors, who isolated a drywell full of stagnant water as the
source of the odors. The drywell appears to have been embedded into sandstone bedrock
and was continually full of stagnant water during the driest time of the year.
The non-functioning drywell has been removed at this time and an alternate outlet for the
drainage system is required. Natural and man-made constraints, including shallow bedrock
and existing retaining walls, make very few areas of the site suitable for an alternate drywell
or infiltration trench system. One of the only possible locations identified is near the bottom
of the driveway below the house. Rerouting of the roof and patio storm drainage to a new
infiltration trench constructed in the bed of the driveway is proposed. Footing drains that
were also directed to the drywell will be piped separately and daylighted below the driveway
retaining wall.
Best Management Practices will be utilized to minimize the impacts of this reconstruction.
This report and the attached drawings comprise an Engineered Drainage and Erosion
Control Plan to demonstrate conformance with Title 5, Chapter 7 of the Pitkin County Code.
2.0 Existing Conditions
The existing residence at 1124 Red Mountain Road is north of the city of Aspen, in Pitkin
County, Colorado. Red Mountain and Hunter Creek Roads intersect in the northwest
portion of the property, with Hunter Creek Road paralleling the western edge of the property.
Access from Red Mountain Road is provided by a gravel driveway constructed on retained
fill, with 20 to 30 foot high modular block retaining walls above Hunter Creek Road.
Above the driveway is the existing multi -story residence stepped up against the side of a
very steep hill. A concrete driveway accesses a single car garage on the lowest level and
switchbacks up to the main garage and entry on the second level. Two additional floors
above both have walk out access to the hill on the uphill side of the home. The hillside
above the home slopes up at 30 to 50% grade.
The drywell that appears to have been the source of the odor problems was constructed
beneath the driveway in front of the lowest level garage. Standing water was reportedly
present in the drywell when it was first discovered in July, and remained for the duration of
the pipe tracing and investigation. At the time of our site observation on October 11th,
standing water was present in the bottom of the excavation left from the drywell removal.
The bottom and sides of the excavation were down into sandstone bedrock. Water
continues to seep in from seams in the bedrock exposed on the bottom and sides of the
excavation.
The soils in the area are classified as the Callings-Yeljack complex by the NRCS Soil
Survey of the Aspen Gypsum Area. The Callings and Yeljack soils typically consist of layers
of gravelly loam and gravelly clay loam, with restrictive layers at depths of 80 inches or
more. Geotechnical investigation was performed by MTI Geo in 1996 in preparation for the
Drainage and Erosion Control Report
000005
2-1
1124 Red Mountain Road 2012-463.001
October 2012
construction of the existing house. At that time, 2 borings were conducted in the driveway
area, which found layers of sandy silt and silty gravel down to depths of up to 22 feet.
Bedrock or groundwater was not found during the borings in March of 1996. Geotech
observations during construction of the house indicate that the lower levels of the foundation
were cut into sandstone bedrock, as was observed at the location of the existing drywell.
Storm and surface water routed to the drywell consists of the south half of the residence
roof, the upper level patios, and a portion of the driveway collected by a trench drain.
Runoff from a portion of the hillside behind the house also drains toward the patio drain
behind the kitchen.
3.0 Proposed Conditions
Drywells constructed into impermeable soil or bedrock do not work or function as intended.
The intended function of a drywell is to collect and infiltrate runoff and they only work
properly when installed well above the ground water table in permeable soils. Since the
drywell evidently didn't drain, stagnant water was likely continually present causing the
growth of bacteria leading to the odor problems.
Soil borings in 1996 indicated that the depth to bedrock in the area of the driveway is
upwards of 20 feet or more. The shallow bedrock exposed in the home excavation and the
existing drywell location apparently is a steeply sloping outcrop overlain by silty gravels
beneath the driveway area.
Standard guidelines are for the bottom of an infiltration facility to be at least 3 feet above the
seasonal high ground water level at least 10 feet away from any building foundations and
below the base of any adjacent retaining walls. The existing drywell was installed with the
bottom below the ground water level and is about 75 feet upslope and 30 feet higher than
the base of the retaining wall below the driveway. The depth to the elevation of the base of
the retaining wall makes it functionally impractical to install a new drywell anywhere near the
existing home and the tall retaining walls. The only practical location for a new infiltration
system is down the driveway where the depth to the base of the retaining walls is 4 to 8 feet
high. To maintain at least a 10 foot setback from the retaining walls, a linear infiltration
trench system is proposed.
3.1 Drainage Analysis
Runoff captured by the existing stormwater pipe system consists of approximately 2400
square feet of impervious roof and patio area plus a small portion of vegetated yard area
behind the home. Including the yard, the total surface area collected is approximately 4,600
square feet. Hydrologic analysis of the runoff volumes and intensities was performed and a
detention and infiltration system designed to maintain historical flow patterns and runoff
amounts.
3.2 Hydrologic Criteria
Analysis of the runoff volumes and flows was done using the Rational Method as described
in the Aspen Urban Runoff Management Plan. A storm of 5 year recurrence interval was
evaluated and used to size the infiltration trench. Hydrologic soil group C was assumed
E3 Drainage 'and Erosion Control Report
000006
3-2
1124 Red Mountain Road 2012463.001
nctnber 2012
based on the classification of the Callings-Yeljack soils in the NRCS soil survey. Runoff
quantity was calculated using the percentage impervious and the total area of the drainage
basin. Peak flows based were analyzed based on the time of concentration of the existing
collection system. Storage and infiltration were analyzed based on a range of storm
durations to maximize the required storage volume.
3.3 Infiltration Trench Design
Design of the storm water infiltration trench system was done using the Rational Method for
a 5 year storm recurrence interval. Infiltration outflow from the trench was modeled based
on the trench floor area and infiltration capacity of the soils. Rainfall intensity was modeled
for a variety of storm durations to maximize the detention volume required and size the
detention and infiltration trench.
Infiltration capacity of the underlying soils was based on recommended rates based on the
USDA soil texture classification. Research by W.J. Rawls into the estimation of soil
properties and the Water Environment Foundation's manual of practice on Urban Runoff
Quality Management form the basis of recommended short term infiltration rates. A safety
factor of 4 is commonly recommended to account for site variability, potential clogging, and
biomass buildup.
Soil gradations from the 1996 geotechnical report were analyzed to correlate the soils
analysis with the USDA textural classifications. The soil sample properties from the boring
nearest the proposed infiltration trench, along with the textural classification and the
recommended infiltration rate is:
Sample # % Sand & Gravel % Silt Textural Class Infiltration Rate
2 88 12 sand 8.0 in//hour
Based on the soil classifications and recommended infiltration rates, an infiltration estimate
of 8.0 inch per hour with a safety factor of 4 was used for design of the infiltration trench. To
fit the site constraints, a 20 foot long by 6 foot wide infiltration trench was analyzed.
A series of storm durations and the detention required was analyzed using the rational
method to maximize the storage volume. The volume required was calculated as the
difference between the total volume of runoff collected less the infiltration capacity of the
trench. Maximum storage volume required was 153 cubic feet for a storm of 160 minute
duration. Using a void ratio of 0.4 for the drain rock filled infiltration trench results in a
required trench depth of 3 feet. A spreadsheet of calculations and analysis is attached in
Appendix A.
Drainage and Erosion Control Report
3-3
1124 Red Mountain Road 2012-463.001
3.4 Drainage System Reconstruction Recommendations
October 2012
The existing drainage pipes that terminated at the failed drywell will be connected to a new
drainage system. The pipe system includes two catch basins, a detention pipe, and an
outlet to the storm drain at the bottom of the driveway. See the attached plan in Appendix B
for additional information and details. Specific recommendations include:
1. Install a new infiltration trench system by the bottom of the driveway. Site the trench on the
east side of the drive with a minimum of a 10 foot setback from the retaining wall. Excavate
the bottom of the trench level, a minimum of 18 inches below the bottom of the retaining
wall. Install a 4 inch perforated pipe a foot above the trench bottom with a cleanout and
monitoring well at the north end. Place the cleanout near the side of the driveway and
protect from vehicle traffic. Fill the trench with 3 feet of 1'h" to 3" washed drain rock and
cover with geotextile filter fabric. Contact the Engineer during excavation for an observation
to verify soil types and depth of the trench.
2. Connect the storm drain pipes from the house to a 4 inch PVC titeline directed to the new
infiltration trench. Storm drain pipes consist of those draining from the roof, patios, and
driveway trench drains. Maintain a minimum of 1.0% pipe slope.
3. Connect the footing drains and subsurface groundwater drains to a new 4 inch PVC titeline
routed to a daylight outlet below the retaining wall by the bottom of the driveway. Maintain a
minimum of 1.0% pipe slope. An additional perforated drain pipe to control the groundwater
collecting in the bedrock sump of the former drywell location may also be installed if desired.
4.0 Erosion Control
Best Management Practices for Erosion and Sediment Control should be used to limit the
impact of the proposed construction. Best Management Practices for this project will include
controlling erosion and sediment by covering spoils or containing with silt fence or straw
wattles, stabilizing all disturbed areas, and marking of clearing limits prior to construction.
See the attached calculations and plan for further detail. Specific recommendations
include:
Erosion Control Measures During Construction:
1. Use the existing driveway approach as the construction entrance. Stabilize as needed
during construction with crushed rock or coarse aggregate. Reference Colorado DOT
Vehicle Tracking Control Standard VTC -1.
2. Cover exposed, and unused soils not contained by silt fence or vegetated strips within 14
days. Use plastic sheeting or straw or wood mulch on cleared areas and stockpiles. Place
gravel base on road driveway and parking areas soon after subgrade preparation.
6 Drainage and Erosion Control Report
000003
1124 Red Mountain Road 2012-463.001
5.0 Operation and Maintenance
5.1 Infiltration Trench
October 2012
The infiltration trench and pipe system should be inspected and maintained regularly.
Gutters and patios should be regularly cleared of debris or vegetation that could clog or
block the pipe system. The observation well and cleanout should be inspected regularly to
verify that the trench is infiltrating adequately. Minimum inspection and maintenance
requirements include the following:
6.0 References
(1) Pitkin County, Colorado. Pitkin County Land Use Code July 2006. August 10-2011.
< http://www.aspenpitkin.com/Departments/County-Code/>
(2) Urban Drainage and Flood Control District. Urban Storm Drainage Criteria Manual
September 1992. November -2010.
hftp://udfcd.org/downloads/down critmanual.htm
(3) City of Aspen. Urban Runoff Management Plan April 2010. August 29-2011.
<httpi/lwww.aspenpitkin.com/Departments/Engineerinq>
Com' Drainage and Erosion Control Report
000009
6-5
1124 Red Mountain Road 2012-463.001
6Drainage and Erosion Control Report
000010
October 2012
Appendix A
Design Calculations
Appendix A
Storm Drainage Calculations
Rational Method
USDA NRCS Soil Survey
Soil Type
Hydrologic Soil Group
Pre -Development Drainage B<
Surface
Pervious Area
Natural Vegetated Area
!BSGM
www.sgn)-iiic.com
Date: October 31, 2012
1124 Red Mountain Road, Pitkin County, Colorado
Calling-Yeljack Complex
C
Area Area
Square Feet Acres
4,600 0.11
4,600 0.11
Percentage Impervious = 0%
Time of Concentration
Length Slope Runoff Coefficient Tc
feet % Cs min.
150 30 0.15 6.87
Peak Runoff for Storm of 5 year Recurrence
1 hour Precip. Depth Rainfall Intensity Runoff Coefficient Q = CIA
Ps (inches) le (in/hr.) C5 cubic feet per second
1 3.12 0.15 0.05
000011
Improved Drainage Basin Analysis
GSGM
www.sgm-inc.com
Surface
Area
Area
To
Square Feet
Acres
Impervious Area
min.
50
Existing Roof/Patios
2,400
0.06
Length
2,400
0.06
Pervious Area
feet
%
Natural Vegetated Area
2,200
0.05
5
2,200
0.05
Total Area
4,600 0.11
Percentage Impervious = 52%
Time of Concentration
Length
Slope
Runoff Coefficient
To
feet
%
C5
min.
50
35
0.40
2.77
Length
Slope
Conveyance Coeff.
To
feet
%
K
min.
100
5
20.00
0.37
Tc (min.) = 5.00
Peak Runoff for Storm of 5 year Recurrence
1 hour Precip. Depth Rainfall Intensity Runoff Coefficient Q = CIA
P5 (inches) 15 (in/hr.) C5 cubic feet per second
1 3.42 0.40 0.14
000012
Infiltration Trench Design
Geotech Report by:
Sample #
2
Width
ft.
6
Trench Volume Design
Duration Td (min.)
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
320
340
360
Trench Design
Volume Required
cubic feet
153
MTI Geo
%Sand & Gravel
88%
Length
ft.
20
Intensity I (in/hr)
1.98
1.32
1.02
0.83
0.71
0.62
0.56
0.50
0.46
0.43
0.40
0.37
0.35
0.33
0.31
0.30
0.29
0.27
Void Ratio
40%
3/13/96
% Silt
12%
Min. Percolation Rate
inches per hour
8.0
USDA Soil Texture
Sand
Factor of Safety
4
6SGM
www.sgm-inc.com
Recommended
Percolation Rate
(fmm WEPASCE 1998)
inches per hour
8.0
Infiltration Rate
cubic feet per second
0.00556
Inflow Volume (ft3) Exfiltration Volume (ft3) Storage Volume (ft)
101
7
95
135
13
122
156
20
136
170
27
144
182
33
148
191
40
151
199
47
152
206
53
153
212
60
152
218
67
151
223
73
150
228
80
148
233
87
146
237
93
143
241
100
141
244
107
138
248
113
134
251
120
131
Req'd Depth Time to Drain
feet hours
3 7.64
Summary: 6 ft. wide by 20 ft. long by 3 ft. deep infiltration trench.
000013
1124 Red Mountain Road 2012-463.001
Drainage and Erosion Control Plan
October 2012
Appendix B
Drawings
6 Drainage and Erosion Control Report Appendix B
nnnnlA
This is a graphical representation
of the site layout and
approximate locations of natural
features, existing improvements,
and proposed improvements and
does not represent a survey.
Verify all property boundaries,
easements, and required
setbacks prior to construction.
BASEMAP FROM PITKIN COUNTY/CITY OF ASPEN GIS DATA, ORIGINAL
BUILDING SITE PLANS PROVIDED BY PITKIN COUNTY. AND AERIAL
PHOTOGRAPHY FROM THE 2006 USDA NAIP.
TOPOGRAPHIC CONTOURS SHOWN ARE 2 FOOT CONTOURS FROM
PITKIN/ASPEN GIS DATA
UNDERGROUND UTILITIES EXIST WITHIN THE DRIVEWAY CORRIDOR. FIELD
LOCATE ALL EXISTING UTILITIES PRIOR TO EXCAVATION AND CONTACT
ENGINEER IF ANY COFLICT WITH CONSTRUCTION
6SGM
118 West Sixth Street, Suite 200
Glenwood Springs, CO 81601
970.945.1004 www.scim-inc.com
Graphic Scale
0 10 20 40
In feet: 1"= 20'
Drainage Control System Reconstruction.
1. Install c new infiltration trench system by the bottom of the
driveway. Site the trench on the east side of the drive with a
minimum of a 10 foot setback from the retaining wall.
Excavate the bottom of the trench level, a minimum of 18
inches below the bottom of the retaining wall. Install a 4
inch perforated pipe a foot above the trench bottom with a
cleanout and monitoring well at the north end. Place the
cleanout near the side of the driveway and protect from
vehicle traffic. Fill the trench with 3 feet of 1k` to 3"
washed drain rock and cover with geotextile filter fabric.
Contact the Engineer during excavation for on observation to
verify soil types and depth of the trench.
2. Connect the storm drain pipes from the house to a 4 inch
PVC titeline directed ito the new infiltration trench. Storm
drain pipes consist of those draining from the roof, patios,
and driveway trench drains. Maintain a minimum of 1.09 pipe
slope.
J.Conneat--the footing drains and subsurface groundwater drains
to a new 4 inch PVC titeline routed to a daylight outlet below
the retaining wall by the bottom of the driveway. Maintain a
minimum of 1.09 pipe slope. An additional perforated drain
pipe to control the groundwater collecting in the bedrock sump
of the former drywell location may also be installed if desired.
Erosion Control Measures During Construction:
1. Use the existing driveway approach as the construction
entrance. Stabilize as needed during construction with crushed
rock or coarse aggregate. Reference Colorado DOT Vehicle
Tracking Control Stcndcrd V7C-1.
2.Cover exposed, and unused soils not contained by silt f@nce
or vegetated strips within 14 days. Use plastic sheeting or
straw or wood mulch on cleared areas and stockpiles. Place
gravel base on road driveway and parking areas soon after
subgrade preparation.
plc
NO WORK IS PERMITTEL
OUTSIDE THE APPROVED
BUILDING ENVELOPE
SCALE %4" = 1'-0"
t= cmc c t�x�Q ;mac , prL �L�/ i t [ c�? 1 �,Y1 roti S �C�' 0 n
1 124 Red Mountain Road
Aspen, Colorado
CONSTRUCTION
NO PARKING IS ALLOWED
ON—JCCt 1�-0 a-\ �2(
ALL DISTURBED AREAS MUST
BE REVEGETATED WITH PITKIN
COUNTY APPROVED SEED MIX
11� r�-RoJeo R C-
• � d aQ9 d oar I:�-�
CONSTRUCTION
ALL PARKING, STAGING &
STORAGE MUST BE MAINTAINED
nfa SITE A IF.E
N
Revision
INFILTRA T/0N TRENCH CROSS SECTION
SCALE.' %4" = 1'-0"
Date By Job No. 2012-436.001
Drainage Control System Drawn by: JEP 1
Date: 10/30/2012
Repair Plan QC: MIN I PE: JEP Of 1
File: 1124 Red Mountain Rand $M
000015
CAPPED CLEANOUT /
INSPECTION WELL
Prior to any excavation
45' WYE OR
work contact Pitkin County
--
SANITARY COMBO
Planning at 970429-2799
1
',4PERFORATED —---
�
PVC '
FILTER—
P/z" TO 3'
FABRIC
i
WASHED DRAIN
ROCK
�
J
,
r
SCALE %4" = 1'-0"
t= cmc c t�x�Q ;mac , prL �L�/ i t [ c�? 1 �,Y1 roti S �C�' 0 n
1 124 Red Mountain Road
Aspen, Colorado
CONSTRUCTION
NO PARKING IS ALLOWED
ON—JCCt 1�-0 a-\ �2(
ALL DISTURBED AREAS MUST
BE REVEGETATED WITH PITKIN
COUNTY APPROVED SEED MIX
11� r�-RoJeo R C-
• � d aQ9 d oar I:�-�
CONSTRUCTION
ALL PARKING, STAGING &
STORAGE MUST BE MAINTAINED
nfa SITE A IF.E
N
Revision
INFILTRA T/0N TRENCH CROSS SECTION
SCALE.' %4" = 1'-0"
Date By Job No. 2012-436.001
Drainage Control System Drawn by: JEP 1
Date: 10/30/2012
Repair Plan QC: MIN I PE: JEP Of 1
File: 1124 Red Mountain Rand $M
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