HomeMy WebLinkAboutpitkin.eh.264929102136 (1994)-19 *J N' -r I X14 -r!'
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ITDIVIDU,,h-T SEWAGj:.' ,, DISPOStPEIMIT NO. q
OF PERMIT:
Z6 y q- ?,f I- 0z - 1:56
Work,(Piovlous Permit # )Alte&:.-.tion (>C -an existing sypitem,
rA!rqancy Uzc (
ocT
t i d i constr"ction ( )E p.qpa (PrcviOAs rCCtait I
ation
)(13c Permit as L reettIt Of Sala )Othort
1,i..SS(JFD TO:
. . — f
DATE 017 ISSUE - 1-.gS
q -C e g Home Phone _jg,D-x0�� Busiaess Phone -
Phone
en Work to b
3e -;,age Disposal'sd-st e performed by._
OC74 11PAO-4JE -TKAIL--_rmit valid only for pr4 IRA . c-7 SiOms L
--miles location by trio -following legal AIS b I V) Si 0)
dp WATER SUPPLY. AVERAC. C PERCOLATION
:;ri(, .r�i:'i in:l' e V A At 1,L01 -r
Scwacjc C;js;,c3'nL pz.-mlt is granted with.r-c-gare, to tX following unot
or: nvd1:Gv'M3' Lo I Ls.- � CarbaSc lothcs Va:lhcrz
AVERAGE nAMY WASTC !Z-NE1 C-I.LLCUS.
IS PERMIT:.
OF THE SYSTE--.-'6-CLtMED WDER TH
("nitt S e p -rt e- - Tank. capacity, 1, 00 0
if %ily', of other cq-�IFMZle-nt 40C A Ppurtn1DnCC4C t
brand name, I
'7A D
V
ID
tionst
STI.C-ES REQUIRING WSPECTION BY THE HEALT11 DEPARTMENT:
ccovc cnvcrin-7 distr.ioutioa
C:4 _Vletior. of excavation and prior to p4necraznt of 9- ' a
,Orr --�xcavation )Upon cor, of 1%bsorptllo
vjcitc backCill OC any coopcncrit i 10thcr, sfecif7l
-ed•- ncte -1. -1ca
and ape ificatidaz of the proposed sewage disposal system have been revLr.�od and:
are c�jn-siScz ...atisf. nr permisa
rda cc with the Pitxir. County IndividuaL
jonq got f.)rt.,, o
-.ted to ti.c Owner, or his '39ent to p,�r(orm the work indicated atx7ve in,ac 0
addition
to qC1101:al P
-Qq, u4sposal. Re-tclations in btltct %)11 the date a', kuzuL. in rl)vis t,,,c revctse het: o,
-14 (,;'jjt is suljcct to the following A dditio.wa tr_rm. and conditiont:
z, T PIROVED FOR ISSUE BY
UAI 1c%1j'jo disposal11Y
ln�itvid
Ln:-.(,ctccj or use hy n rep rc:cn%..-.t ivc"c f V.!;c An
0 ftfticy MkKe1we
Ln CCnC OC tatlu" Or th:.v.ucwaqa.diapo*a1
Aspen/Pitkin Environmental
DATE C17 FINIld, 1NSP!--'CT1OX Health Officer
130 S. Galena
'ICITLE
1DU couch Galena ST;ref!t Aspen,303/3':3-6070
kn-Id.4A- .a' •"
ASPEN40PITKIN
ENVIRC 'MENTAL HEALTH DEPART ENT
t
APPLICATION FOR AN INDIVIDUAL SEWAGE DISPOSAL• PERMIT
OWNER C� Gj PHONE C) q(, -,Z
Name of
Address of OWNER ` x
q�C - � ���
Name of APPLICANT PHONE
PERMIT TO BEt ( )Picked Up ( )Mailed tot• TYPE OF PERHITt New Installation ( )Repair
( jOwner ( )Applicant ( )Emergency Use ( )Alteration NOT due to failure
Lo-ATION OF PROPOSED SYSTEMt ) , of Ole
.n
Legal Description L! �-
Lot Block Filing Subdivision Size of Lot 'r acres
e a
TyPE•OF STRCCT'URE: • �ingle Family Dwelling ( )Other: ryou plan any furthe dditions to the
residence? ( )YES �NO
No. of bedrooms_ No. of Lofts No. of Garbage Disposals No: of Automatic Dishwashers Mqq
1;0. of Automatic Clothes Washers i SIVe
WATER SUPPLY1 ( )Private Well, Depth or (Public, Name of System
( )Spring
( )Stream or Creek
TYPES OF INDIVIDUAL SEWAGEDISPOSAL SYSTEM PROPOSED:
bp(Septic Tank/Absorption Field ( )Aeration Plant/Absorption Field ( )Composting Toilet ( )Incineration Toilet ( )Mound
( )Recycling, potable use ( )Recycling, other use ( )Vault Privy ( )Other:
The'initial site inspection must be arranged with the Aspen/Pitkin• Environmental Health Department (925-2020. 8:30-9:30 a,m.)
before a permit can be issued. The individual sewage disposal permit must be issued before a building permit can be obtained.
FINAL INSPECTION APPROVAL MUST BE GIVEN BY THE ASPEN/PITKIN ENVIRONMENTAL HEALTH DEPARTMENT PRIOR TO BACKFILLING ANY PORTIO=N
OF THE SYSTEM.
Application for an indiv ual sewage disposal permit is hereby submitted. The undersigned acknowledges that the above information
In true and that false n rmation will invalidate the application and any subsequent permit.
Signature of Applican ~�((rWJ DATE -1-i
This application becomes. invalid 12 months from the above date.)
NOTE: PLOT PLAN must be filed with this application.
Please locate the following items by measured distances:
1. Property lines and dimensions.
2. Proposed and existing water wells on subject property and
adjacent property.
3. Domestic water service lines.
4. Proposed and existing buildings, driveways, and other
structures.
S. Streams, lakes, ponds, irrigation ditches, and other water
courses.
6. Proposed .and existing individual s•_wage systems on subject
property. ,
SUBMIT A REVISED PLOT PLAN PRIOR TO CONSTRUCTION IF INSTALLATION IS TO
BE CHANGED FROM ORIGINAL PLAN
The undersigned hereby acknowledges receipt of this individual sewage disposal permit' application andbya pen
permit tt fee in the aoul
of S �J Q (J� _, Receipt Number (��� 93 , Date Fee Received /` 7 7 N%
Administretivo Officer
130 South Galena Street Aspen, Colorado 81611 303/920-8070
Nelson Environmental & Wastewater Solutions, Ltd
E
w December 2, 1993
S
Mr. and Mrs. Patrick Derby
P. O. Box 2613
Aspen, CO 81612
Subject: Soils Evaluation and Percolation Test for individual Sewage System Design for
a 112 -acre Parcel of Land, Tract 9, Swiss Village Subdivision, numbered as 0176 Apache
Trail
Dear Kathy and Pat,
As requested, Nelson Environmental and Wastewater Solutions, Ltd., performed a soils
study and percolation tests on the subject property to design a septic system for the
proposed residence. We conducted this study according to Section 4-5 of Pitkin
County Regula#ions on lndivsdua! Sewage Disposal Systems on Monday,
November 15, 1993. We have based our recommendations on the subsurface
conditions encountered. We will furnish this letter and an individual sewage disposal
system permit application to the Aspen/Pitkin Environmental Health Department at our
earliest opportunity so that you may obtain a permit to construct this sewage system.
Proposed Construction:
The planned residence is a three bedroom, two and one half bathroom, two-story frems in
house.
The property is to be served by the subdivision water system with the water provided
from alluvial wells and treated prior to distribution. The lot is approximately 1!2 acre in
size.
Site Conditions:
The site is a lot in the Swiss Village Subdivision. Typical of the lots in this subdivision,
the building site is located in an area covered with oak brush, with numerous swales and
draws.
The ground surface, which appears natural in the proposed area of the proposed
absorption field, slopes gently to the East at a 10% grade. There are no irrigation ditches
or streams in the immediate area.
P.O. Box 6961 Snowmass Village, CO. 81615 Office (303) 923.3289 Home (303) 923.2766
Derby Residence
Soils Evaluation and Percolation Test
for Individual Sewage Disposal System Design.
12iO3i93
Piga
Subsurface Conditions:
A soil profile pit, within an area considered suitable for an on-site wastewater disposal
system absorption field, was excavated. The excavation revealed that no groundwater or
bedrock present within nine feet of the surface of the ground.
The soils on the property consisted of 8 inches of topsoil overlaying a dark red sandy
loam with some gravel and flagstone fragments, three or four inches to over four feet in
diameter encountered below the depth of three feet. The subsoil was relatively more
sandy toward the bottom of the profile pit excavation.
Percolation Testing:
The subsurface soil conditions were evaluated with the standard percolation test
procedures at the approximate location shown on Figure 1. The subsoil, in which the
percolation testing was done, consisted of a sandy loam. These reddish soils were well
consolidated, and showed little tendency to swell. The test holes were prepared by
hand -digging a small hole in the bottom of a thirty -Six deep backhoe excavation Thre9
inches of gravel were placed in each test hole after all loose soil had been removed and
the test hole sidewalls roughened.
Percolation testing was performed in the proposed absorption area location. The
percolation holes were pre-soaked the morning before testing. Water was added to the
test holes at regular intervals of three hours throughout the day. A total of approximately
five gallons was added to the test holes the day the test was conducted. Presoaking,
therefore, was accomplished for more than four hours before beginning the percolation
test. The results of the percolation testing are presented in Table I. These results
indicate the Sandy loam soils have an average percolation rate of ` "- .inutes per inch N�
and are acceptable for a conventional infiltration design for the on-site sewage system.
Limitations: This report has been prepared according to generally accepted practices in
this area for use for sewage disposal design purposes. The conclusions and
recommendations submitted in this report are based upon data obtained from our site
visits at the location indicated. There is some possibility that the nature and extent of
variations in the subsurface soils across the site may not have been evident at the time of
this investigation, and may need additional evaluation if further excavation reveals
conditions different from those described. This office should be advised of any unusual
Situation-_ as Soon as possible so that we may reevaluate our recommendations.
Derby Residence
Soils Evaluation and Percolation Test
for Individual Sewage Disposal System Design
12/03/93
Page 3
if you have questions or if we may be of further assistance, please call the office.
Sincerely,
Robert F. Nelson, R.E.H.S.
President
Reviewed By:
w
y ammond, P.E.
Schmeuser, Gordon, Meyer Engineering
Nelson Environmental & Wastewater Solutions, Ltd
E Property Address: 0176 Apache Trail
W Legal description: Tract 9. Swiss Village Subdivision
S Property Owner:
Name Kathy and Patrick Derby
Address P. O. Box 2613 - Aspen, CO 81612
Phone 920-4027
Contractor: Excavating Contractor:
Name Owner Name Duane Piffer
Address Address 622 Redstone Blvd.
Redstone, CO 81523
Phone Phone 963-1594
Saturation and Swelling
o Smeared surfaces removed X Yes
o Gravel Added X Yes To a 3 or T' Depth
o Date arid Time presoak water added
11%15/93 (& 11:05 a.m.
o Amount of presoak water added
5 gallons /hole
o Water reri7i llig hi holes after presoak?
Hole 1: X Yes No
Hole 2: X Yes No
Hole 3: X Yes No
Percolation Rate Measurement
Hole 1: 10 minutes/inch
Hole 1: 24 minutes/inch
Hole 1: 14 minutes/inch
AVERAGE 19 minutes/inch
Groundwater:
o Not Encountered to 9 ft.
o Estimated depth to high seasonal
water if not encountered- 80 feet
o Is area believed to be subject to
seasonal fluctuations which could
result in a seasonal water table?
_ Yes X rro
Slope in absorption area
10% to the East
Bedrock
o Not Encountered
u Estunated depth if not encountered -70 Il.
1 o Type of bedrock:
X Sandstone Claystone
Siltstone Other.
Fractured Weathered
o Is bedrock believed to be permeable?
Yes No N/A
l certify that the above information is correct and complete to the best of my knowledge
and that all tests were pertormed in accordance with the provisions of Pitkin County
Individual Sewage Disposal Regulations, Section 4-5.1 through 4-5.7.
Review /,J
( "` A
Robert F Nelson Jay t mo d, E. �• •
President Sch eus Gordon; Meyer Enema
26078
P.O. Box 6961 Snowmass Village, CO. 81615 Office (303) 923.3289 Home (303)
Nelson Environmental & Wastewater Solutions, Ltd.
E
W
S TABLE I
PERCOLATION TEST RESULT FORM
Derby Property
Tract 9, Swiss Village Subdivision 1
Date of Percolation Test: 11/15/93 to�
P.O. Box 6961 Snowmass Village, CO. 81615 Office (303) 923.3289 Home (303) 923.2766
Hole
Length
Depth at
Depth at
Drop in
Average
Hole
Depth
of Interval
Start of Interval
End of Interval
Water Level
Percolation
No.
(in.)
(Minutes)
(Inches)
(Inches)
(Inches)
Rate(Min./Inch)
1
391/2
13
61/9
4 7/16
111/16
10
4 7/16
3 1/4
13/16
(refill)
6
5
41/4
3/4
6
4 1/4
3 1/4
1
6
31/4
21/2
3/4
6
21/2
17/8
5118
10
2
42
13
43/8
311/16
11/16
10
311/16
31/4
7/16
(refill)
6
43/8
41/8
1/4
6
41/8
33/4
3/8
6
33/4
31/2
1,14
6
31/2
3 1/4
1/4
24
3
45
13
41/116
35/8
7/16
10
35/8
33/16
7/16
(refill)
6
411/16
47/16
1/4
6
47/16
41/4
3/16
6
41/4
4
1/4
6
4
39/16
7/16
14
Derby Property
Tract 9, Swiss Village Subdivision 1
Date of Percolation Test: 11/15/93 to�
P.O. Box 6961 Snowmass Village, CO. 81615 Office (303) 923.3289 Home (303) 923.2766
FIGURE 1
Derby Residence
Tract 9, Swiss Village Subdivision
0176 Apache Trail
i�,ORL7 CA Pfd r-- N 67 7R -All, )
I
Cm AU SC
o
to AJ'
P- 1
l*�
P-^, P—z
& a r,>1 Vi ,
ROAD
PO F:
_...._. -.... - ------ ------ i(
5TAKs0 `24PEkTY
r
k1 OA n/CR (_ �,
- H
SCALE: I
WJ
Nelson Environmental & Wastewater Solutions, Ltd
E
W December 3, 1993
S fir. and Nfis. Patrick Derby
P. 0. Box 2613 I
Aspen, CO 81612
Subject: Individual Scwagc Syst~m Dcsign for a 1/2 -acre Parccl of Land, Tract 9, Swiss Villagc
Subdivision, numbered as 0176 Apache Trail
Dear Kathy and Patrick,
As requested, Nelson Environmental and Wastewater Solutions, Ltd., has performed a soils study
and percolation testing for the design and construction of a septic system for the proposed
residence at the subject site. This letter details our design recommendations.
Proposed Construction and Building Site:
The proposed two-story- residence is to be a three-bedroom, two and one half bathroom house.
The property is served by a subdivision well and water system. The property is approximately 1/2
acres in size.
This site is in the Swiss Village Subdivision in an area of the Crystal River Valley several hundred
feet above and about 1/4 mile from the Crystal River.
In our opinion, the site does not present any significant limitations to the construction of an on-site
sewage disposal system. The. ground surface, which appears natural in the proposed area of the
absorption field, slopes gently to the East at a 10% grade. There are no natural drainages or
irrigation ditches apparent in the area.
Minimum Pitkin County Requirements:
The percolation rates measured in the sandy loam subsoils were measured at an average of 19
minutes per inch.
The minimum Pitkin County requirements for the installation are based on a system flow of 450
gallons per day. This flow would require a septic tank of 1000 gallons minimum volume, and a
minimum of 900 square feet of standard absorption trench, defined as follows:
A standard absorption trench is an excavation less than three -feet (3) wide and containing
a 4 -inch (4") perforated distribution pipe placed in gravel and centered in the excavation.
A minimum of six -inches (6") of 1/2 inch to 2 1/2 inch diameter gravel is placed under the
distribution pipe network. A sufficient amount of additional gravel is placed around and
over the distribution pipe and to bed and cover the pipe with a minimum of two inches (2")
of gravel.
P.O. Box 6961 Snowmass Village, CO. 81615 Office (303) 923.3289 Home (303) 923.2766
T1Prl�y 12 eci{len�e
Individual Sewage System Design
December 3, 1993
Hage 2
Recommended On-site Wastewater Disposal Desitin:
It seems advisable to consider the use of the "Infiltrator" graveless leaching chamber system for all
or part of this system.. The distance to site from the sources of gravel makes the use of gravel less
systcros attractive, and we would suggest that you plan to use this method of construction. Usc of
"Infiltrator" leaching chambers permits a 50% reduction in standard absorption bed area under
County regulations. This reduction is based on manufacturer's claims and or. an approval of such
a reduction by the Colorado Department of Health, Water Quality Control Division. Therefore, a
system of trenches with a bottom area of 450 square feet would be required.
Additional size reductions on the small lot can be accomplished by separation of the washing
machine gray water flow to a separate system consisting of a septic tank and small seepage pit.
This would eliminate 120 gallons of flow to the main black water system. A septic tank of 500
gallons and a pit of 157 square feet is required to dispose of the flow from the laundry.
Therefore, the suggested design incorporates the alternatives listed above. We recommend that the
main black water septic system consist of a 1000 gallon concrete septic tank and three "Infiltrator
seepage trenches with dimensions of three feet by thirty eight feet, with approximately eighteen
sections of "Infiltrator" placed in the three trench excavations (six sections per trench). It is
required that the trenches be excavated as shallow as possible, but at least to a depth of at least two
feet below existing grade on the downhill edge. The bottom of each trench must be level. The
gray water system as described, can then be constructed for disposal of the wastewater from: the
washing machine.
Although located in a gently sloping area, we advise that the trench excavations be placed on the
contour of the hill with the long dimension perpendicular to the direction of the slope.
Further, it is advisable to use a distribution box to equalize the flow to each of the three sections of
Icaching chamber trench. The distribution box would be placed bctwccn the scptic tank and the
leaching chamber trenches and connected to the head end of each sixty foot section with a piece of
solid PVC pipe.
If you have questions or if we may be of further assistance, please ca» the office.
Sincerely,
Robert F. Nelson
President
Table 3
Septic Tank Capacity
Based on Number of Bedrooms
Minimum Effective Liquid
#of Bedrooms Tank Capacity (gallons)
1 orless 750
---1250
Each additional bedroom 250
Table 4
Maximum Loading Rates of Effluent Volume
for Soil Absorption Systems
Percolation Rate
Typical Soil Textures
Maximum Loading Rate
(minutes/inch) _
SpitClass (Appendix 2)
(gal./sq.tt./day)
0-10
I Sand
Soil Absorption Systems
-Sandy LUM to Loam......-.`_._..V----�
21.30
III Oam
-
.50
31.40
IV Loam to Silty Loam
.40
41.60
Over 60
V Clay Loam
V1 CI
30
ay
20
Table 5
Required Square Footage of
Soil Absorption Systems
Required Bottom Required Bottom
Absorption Area In sq. it Absorption Area In sq. IL
�
Required Sldewall Area' );
Per Bedroom` for Per Bedroom` for
In sq. ft. per Bedroom' for
Solt Class
Standard Trenches Seepage Beds
Seepage Pits
1
11
165 215
300 400
185
335 j
Ili
440 575
480
IV
550
V
740
VI
I,
rmum number of bedrooms is two (2). -
'Absorpdon area for seepage pots is figured as effective sidewan area beneath the inlet.
'unsuitable for seepage pits it percolation rate is over thirty (30) minutes per inch
'Unsuitable for Seepage beds if percolation rate is over One inch (1-) in shiny (30)_minutes.
'Unsuitable for conventional absorption systems. .� 7 C Y ` V
3oo
-A
r
iy,0°
-7.2 Pit
3
ASPEN • PITKIN
ENVIRONMENTAL HEALTH DEPARTMENT
March 1, 1996
Cathy and Patrick Derby
0176 Apache Trail
Redstone, CO 81623
Dear Patrick and Cathy:
This letter is to explain changes made in our department policy with respect to
building permits approved under the current Individual Sewage Disposal
Regulation for homes where septic system permits were issued under the old
regulation.
It has always typically been our recommendation to homeowners that they size
their individual sewage disposal system initially to be large enough to
accommodate possible future expansions or remodels. There are many
homeowners who initially made their systems a little larger than they had to, in
the hope that they could remodel in the future without having to expand their
septic system. However, the new individual sewage disposal 'system regulations
require septic systems (tanks and fields) to be sized not just according to the
number of bedrooms, but to include other similar -sized rooms that could be used
as bedrooms under a future owner. The regulations do require that before we
can sign off on a building permit involving rooms similar in size to bedrooms,
the septic system be enlarged to accommodate that room under the new
regulations. The current regulations do not allow for grandfathering of existing
systems, whether built for additional future bedrooms or not.
However, we realize that there will be a few cases where homeowners were
really "caught" between the two regulations. This situation would be one where
the homeowner began construction just as the old regulations were being
replaced by the new ones. In a case where the septic system and initial home
construction were started just before the new regulations went into effect, -and
where additional work on the house was contemplated right after the new
regulations went into effect, it would be reasonable to allow the homeowner to
finish the house construction under the requirements of the old regulations with
regard to septic tank size.
Printed on Recycled Paper
130 SOUTH GALENA STREET • ASPEN, COLORADO 81611 • PHONE 303.920.5070 a FAx 303.920.5197
Primed m reryded paper
Therefore, our department policy will be that if a building permit and septic
permit were issued after Jan. 1, 1994, and finishing the house requires additional
permits to be issued within five years of the date of this letter, we should allow
the work to be performed with the septic tank sized according to the regulations
in effect in 1994, and the field size governed by the regulation in effect at the time
of the application.
That would mean, in your case, that since your septic permit and building permit
were issued in 1994, and you wish to complete work on your house now, the
septic system tank would not have to meet the requirements of the present
regulations, but can comply with the regulations in effect in 1994. That would
require a small addition to your leach field, but would not require any
additional septic tanks.
We apologize for not having anticipated such a situation sooner or realizing
sooner the need to develop a reasonable and fair way to deal with a case like
yours. We know that the problems caused for you by this transition between
laws has been significant, and we sincerely hope that this solution may be one
that works for you and allows you to have the home you want. If you would like
to discuss this matter further, please feel free to talk to any of us.
Sincerely,
YzA�h/G-�
Thomas S. Dunlop, Director
Aspen/ Pitkin Environmental Health Department
Printed on Recycled Paper
T-
B
B & R
Septic, Rooter & Jetting Service
1555 Hwy. 133
Carbondale, CO. 81623
963-3814 920-2059
Customer's
Order No. Date '" 19
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Name
Address
SOLD BY CASH C.O.D. 6N
MUS . PAI T
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ACCT.
RETD. S
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TAX
TOTAL
All andreturnedreturned goods MUST be accompanied by this bill.
claims
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