HomeMy WebLinkAboutKENO HILLS #6 BLK 6 LT 13,no Hills
Block 6
Lot :[3
#020-171-41
Municipality of Anchorage
DEVELOPMENT SERVICES DEPARTMENT
4700 South Bragaw Street Anchorage, AK 99519-6650 - 343-7904
On-Site Wastewater Disposal System or Well Inspection Report
Permit Number SW010389
13
A- 1~.21'
R · 350.00'~
(REC)
M1 ' . S2
PID No. 020-171-41
S 89'54'24'1[ 336.86 (R)
S 89'40'06'E 336.95~
Page 2 of 3
MH $1
RECOV. 5/8" /
REBAR (TYP)
--~ternate
1Site
TH2__J '
Six
Well 0
84.2'
f.-J
A B
S1 35.3 35.5
'MH 55.0 58.1
M1 90.1 100.8
M4 86.9 87.8
. I0' UTILITI' EASEMENT
S 89°55'47'£
N 89'54'24'W ,268.;7 (R)
PLAN AS-BUILT
SCALE 1" = 50'
Municipality of Anchorage
DEVEOPMENT SERVICES DEPARTMENT
4700 South Bragaw Street Anchorage, AK. 99519-6655 - 343-7904
On-Site Wastewater Disposal System or Well Inspection Report
Permit Number:. SW010389
Page 3 of 3
PID No. 020-171-41
40.0' _~
2,000 Gallon
S.T.E.P. Tank
6.5
· Flushing
Velve
9t.Ij
95.0
Geotextile Fabric and ~° [nsulation
6' oF 3/8" Pea Gr'ovel ,.--X' 91.6
~" Fitte~' SGnd
Ai~ Line ~
89.5~ ~ 89.0
30'
PROFILE AS-BUILT
Scale: Measurements Shown
S~P-10-2002 TU£ 10:23 ~H P~C ~ST, INC.
'~ightF~X 91612002
~× NO. 9075823031
PAGE 1/1 RightFAX
InSpection Report
Munlcipal;tV of Anchoratje, Building Safety Division
4700 South Bra[law
INSPECTION: FAX (907)249-7777
TOPI EDWARDS
1790[ SPA~N DR
INSPECTZON: VOICE 343-B300
I~ame
Address
Legal
Subdivision
Comments or Directions
P. 02
BK6 LT 13
KENO HILLS
ZNFO:343-8211
Permit Ol-Ollg
Phone 360-483!
344-712!
Inspection Date 9/9/2002 AH
PLEASE CANCEL INSPECTION SUBMITTED FOR 9/n/02
:rnspectlon Final Electrical
[] NO NONCDMPLTANCE DBSERVED
[] CORRECTIONS E$SENTZAL AS EXPLAINED BELOW
[] WZLL RE-EXAMINE AT NEXT
INSPECTION
COMMENTS: (for Inspector usa only)
Relnspectlon N
[] DO NOT CONCEAl. IINTII. REINSPECTZON
Received Time Sep.lO. 9:I3AM
ANDERSON ENGINEERING
P.O. BOX 240773
ANCHORAGE, AK 99524
522-7773 522-6779 (FAX)
'MEMORANDUM
DATE:
September 11, 2002
TO: Jeff Poet
FROM:
Mike Anderson, P.E.
SUBJECT:
Lot 13, Block 6, Keno Hills Subdivision No. 6
Well and Septic System As-Built
Attached is the certified as-built for the septic system recently completed on the subject
lot. The first inspection for the system was completed on July 25, 2001. At that time it
was unknown to the installer that the permit had expired. All work was stopped until the
new permit was issued on September 24, 2001. Additional inspections were then held
on September 25, 2001. The final electrical sign off was just recently issued on
September 9, 2002. The septic system is now complete and the as-built has been
finalized.
During construction soils found at the bottom of the bed were consistent with those
found in the test holes and consisted of well-graded sand with some silty gravel. The
total depth of the system minus the sand filter is 2' below the surface allowing more
than 5' of separation from ground water and 7' from bedrock.
Please let me know if you have further questions.
Municipality of Anchorage
Department of Health anti Human Services
825 'L' S/met
P.O, Box 196650 Anchorage, Alaska 99519-6650
Rick Mystrom htlp~lN~ww.cLanchorageak.us
Mayor
Permit Number: #SW 000135 Date of Issue: .5.31-00 Parcel Identification Number: 020-171-41
Date Started: 10-15-00 Date Completed: 10-16-00 Is well located at approved permit location? [] Yes [] No
Legal Description: Keno Hills #6 BIk 6 Lt 13
Property Owner Name & Address: Bill Westhusing C/O Pal-West Inc.
2000 E Dowling Rd fl 15
Anchorage, Ak 99507
Borehole Data: Depth (ft) Method of Drilling [] air rotary [] cable tool
Soil Type, Thickness & Water Strata From To
Casing type: steer
stick-up 0 2 Wall Thickness: .025 inches
,gravelly silt 2 11 Diamcter: 6 inches Dcpth: 1_~9 fcc/
Bedrock 11 167 Liner Type: __
Diameter: __ inches Depth: feet
Casing stickup above ground: _2 feet
Static water level (from ground level): 13 feet
R E C E i V £ D Pumping level: t67 feet after
_2 hours 'pumping _5 gpm
[q0V 0 6 2000 Recovery Rate: _5 gpm .,
Method of Testing: airlift
Munic~pali~ ot Anctnorage
Dept. Health & Human Services Well Intake OPening Type:
[] Open End [] Open tlole
[] Screened Start ~ feet Stopped feet
[] Perforations Start__ feet Stopped feet
Grout Type: Bentonite # 8 Volume: 1 bg
Depth: Start _0 feet Stopped + feet
Pump: Intake Depth feet
Pump size hp Brand Name __
Well Dislnfected Upon Completion? [] Yes [] No
Method of Disinfection: Cio#ne Tablets
Comments:
Well Driller: Alpine Drilling & Enterprfses
- .POBox110496 -.
, ' Anchorage AK 99511
Attention: The well driller shall provide a well log to the property owner within 30 days ofcompletion and the property
MUNICIPALITY OF ANCHORAGE
Development Sen4ces Department
On-Site Water & Wastewater Program
4700 South Bragaw Street
P.O. Box 196650, Anchorage, AK 99519-6650
(907) 343-7904
ON-SITE WASTEWATER DISPOSAL SYSTEM PERMIT
Initial
Date Issued: Sep 24, 2001
Expiration Date: Sep 24, 2002
Permit Number: SW010389
~Legal Description: KENO HILLS ~ BLK 6 LT 13
Design Engineer: 0014 Anderson Engineering
Owner Name: Bill Westhusing
Owner Address: 16841 Ransom Ridge Rd.
Chugiak, AK 99567-
Parcel ID: 020-171-41
Site Address: 017901 SPAIN DR
Lot Size: 102871 SQ. FT.
Total Bedrooms: 6 Permit Bedrooms: 6
This permit is for the construction of:
[] Disposal Field [] Septic Tank [] Holding Tank [] Privy
[] Private Well [] Water Storage
All construction must be in accordance with:
1. The attached approved design.
2. All requirements specified in Anchorage Municipal Code Chapters 15.55 and 15.65 and the State of Alaska
Wastewater Disposal Regulations ( 18AAC72 ) and Drinking Water Regulations ( 18AAC80 ).
3. The engineer must notify DSD at least 2 hours prior to each Inspection. Provide notification by calling
(907) 343-7904 ( 24 hours ). ( Not required for a Water Supply Permit only ).
4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather
must be either: A. Open and closed on the same day.
B. Covered, sealed, and heated to prevent freezing.
Received By: ~
Issued By: ~
Date: I--Z4-01
Municipality of Anchorage
Development Services Department
Building Safety Division
On-Site Water and Wastewater Program
4700 South Bragaw St.
P.O. Box 196650 Anchorage, AK 99519-6650
www.ci.anchorage.ak.us
(907) 343-7904
ON-SITE SEWER/VVELL PERMIT APPLICATION
FOR A SINGLE FAMILY DWELLING
Parcel I.D. 020-17t-41
Permit Number SWO/~'
Property owner(s) Bill Westhusln.q
Mailing address (1) 1684t Ransom Ridge Road
Mailing address (2)
Anchoraqe, AK 99516
Day phone 345.6246
Zip Code
Legal description (Lot, Block & Sub'd.) Lot 13, Block 6, Keno Hills Subdivision
Legal description (Section, Township & Range)
Lot Size t02,871 Acres/Sq. Ft. Number of Bedrooms Six
THIS APPLICATION IS FOR:
Sewer Only
Sewer and Well
Sewer Upgrade
THIS PROPERTY CONTAINS:
Hot Tub
Swimming Pool
Therapy Pool
[] Well Only
Water Storage
Jacuzzi []
Water Softening Unit []
I certify that the above information is correct. I further certify that this application is being made for a _
Single Family Dwelling and is in accordance with applicable Municipal Codes.
(Signature of property owner or authorized agent)
Permit Fees:~
Date of Payment:
Receipt Number:
(Rev. 12/00)
Waiver Fees:
Date of Payment:
Receipt Number:
'ANDERSON ENGINEERING
P.O. BOX 240773
ANCHORAGE, AK 99524
522-7773 522-6779 (FAX)
MEMORANDUM
DATE:
TO:
FROM:
SUBJECT:
September 21, 2001
Dan Roth
Mike Anderson, P.E.
Lot 13, Block 6, Keno Hills No. 6
Septic System Construction Permit No. SW00135
We have modified the Site Plan for the septic system construction permit to include the
actual location of the well ddlled on the property under Permit No. SW00135. We are
hereby requesting the permit for the construction of a septic system on this property be
reissued. Attached also are your comments to our previous submittal for a renewal of
the permit.
Please let me know if you have any questions or additional information is required.
Mtmicipality of Anchorage
6/7/2001
Bill Westhusing
16841 Ransom Ridge Rd.
Chusl&, AK
Subject:
I'~epartmenl o-~
Public Works
Expired On-Site Water and/or Wastewater Permit.
Permit Number: SW000135,
Parcel ID: 020-171-41
Dear Bill Westhusing:
An On-Site Water/Wastewater Permit, number SW000135, issued by this office for a
single-family system, expired on May 31, 2001. This permit was valid for 365 calendar
days.
If this was a well permit and the well has been drilled, a well log must be sent to this
office for documentation of the installation and to close the permit.
If this permit was for a wastewater disposal system, an original as-built inspection report
must be sent to this office for review, approval and documentation. This as-built
inspection report must be signed by the licensed Professional Engineer who inspected the
installation ofthe system. As-built inspection reports are required to be submitted within
30 days of the completion of the system.
If no system was installed under this permit, and you are still planning to install a well or
wastewater disposal system, a new permit must be obtained from this office. When
applying for a new permit, the fees are: $320.00 for a wastewater permit and $120.00 for
a well permit.
If you have any questions, please call this office at 343-7904.
Sincerely,
:{Letters Sent 6/7/01 without copies being made, second printing for file copies}'
James Cross, PE
Manager
On-Site Water and Wastewater Program
eno: Copy of permit
MUNICIPALITY OF ANCHORA GE
Deparfment of Health and Human Services
On-Site Services Program
825 L Street, Room 502
P.O. Box 196650, Anchorage, AK 99519-6650
(907) 343-4744
ON-SITE WASTEWATER DISPOSAL SYSTEM I WATER SUPPLY PERMIT
Initial
Date Issued: May 31, 2000
Expiration Date: May 31, 2001
Permit Number: SW000135
Legal Description: KENO HILLS #6 BLK 6 LT 13
Design Engineer: 0014 Anderson Engineering
Owner Name: Bill Westhuslng
Owner Address: 16841 Ransom Ridge Rd.
Chugiak, AK 99567-
Parcel ID: 020-171-41
Site Address: 017901 SPAIN DR
Lot Size: 102871 SQ. FT.
Total Bedrooms: 6 Permit Bedrooms: 6
This permit is for the construction of:
[] Disposal Field [] SepticTank [] Holding Tank [] Privy
[] Private Well [] Water Storage
All construction must be In accordance with:
1. The attached approved design.
2. All requirements specified in Anchorage Municipal Code Chapters 15.55 and 15.65 and the State of Alaska
Wastewater Disposal Regulations ( 18AAC72 ) and Drinking Water Regulations ( 18AAC80 ).
3. The engineer must notify DHHS at least 2 hours prior to each Inspection. Provide notification by calling
(907) 343-4744 ( 24 hours ). ( Not required for a Water Supply Permit only ).
4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather
must be either: A. Open and closed on the same day.
B. Covered, sealed, and heated to prevent freezing.
Received By:
Issued By:
ANDERSON ENGINEERING
P.O, BOX 240773
ANCHORAGE, AK 99524
' 522-7773' 522-6779 (FAX)
May 15, 2000
Municipality of Anchorage
Department of Health and Human Services
825 'L" Street
Anchorage, AK 99502-0650
Subject:
Lot 13, Block 6, Keno Hills Subdivision No. 6
Septic System Design and Permit Application
Impacts to Adjacent Properties
Dear Onsite Services Eng~ neer:
The owner Of Lot 13, Block 6, Keno Hills Subdivision No. 6 intends to construct a six
bedroom home on t,he lot. We are therefore requesting a'permit be issued to construct
a new well and sepbc system to serve the proposed home. The attached Site Plan and
backup documentation show the'location and configuration of the new septic system
and well. It also shows the 100' protective radius for the well and the alternate site for
the absorption bed. The lot contains approximately 2.5 Acres of surface area and the
well radius is contained entirely on the lot. In addition, the septic system is easily more
than 100' from other well radii in the area.
Several test holes have been placed on the lot to' find an acceptable location for the
new absorption bed and reserve site. All holes revealed silty gravel and well graded
sands which percolated at less tha.n, 1 per inch. Groundwater was noted dudng the
excavation of the holes at between 7 and 9' below the surface and bedrock was found
at 9'. The water level was monitored at 7' below the surface on May 2, 2000. We have
therefore designed a bottomless sand filter system. 'The laterals will be placed at 1.5'
below the ground surface and the total depth of the bed'will be 2.0'. A total of 5'
separation from groundwater will be maintained and 7' from bedrock.
The lot slopes at varying grades from east to west and south to north. The new
absorption bed will be placed in a fairly fiat area near the front of the lot.. The lot is of
sufficient size that no conflicts will exist between either the well or septic system on the
lot and all other systems in the area.
If the System is constructed in accordance with our design the following statements
apply:
1. The system, if constructed as designed, will have no adverse impact on the wells
in the area or those to be constructed in the future.
2. The system, if constructed as designed, will have no adverse impact on existing
septic systems in the area or those to be constructed in the future.
'L~)t 13, Block 6, Keno Hills Subdivision No. 6
,May 15, 2000
Page Two
The system, if constructed as designed, will have no adverse impact on reserved
space, either surface or subsurface, on any lots located in the area.
The'system, if constructed as designed, will have no ad~;erse impact on drainage
patterns in the area. The current drainage pattern will be maintained.
Sincerely,
Michael E.:Anderson, P.E.
*Attachments
i
Well
ANDERSON ENGINEERING
P.O. Box 240773
ANCHORAGE, AK 99524
(907) 522-7773
Cell (907) 441-4000
~ · I : , , [ ! House ~ ~ ~ ~ ' ·
! , , { { ; I I , ! . , ! ; , , Air Compressor and 0-_10 psi
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[ I 'I , I | [ '. ~ i [ ; ~ ; ' I Easllty Accessible Location.
.... l.._.j__._.[ ....... [ .......J ....... [ ............... ~_~ __I__L_..~ ........ ~--l- .-~homa~ -[~dus~s
i ~ [ I [ ~ I [ ! ~s Supplied By Anchorage
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, ~ [ . , ~ A~r L~ne Shall Be A ~ HDPE
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~ I ST I / / I I [ ~ ] I I Wrap ~ns~de a 2" Schedule 4(
i ~ ~ i ~ 7 PVC Jacket Burle~ a Mxnlmum
---1 ~i~-~'--t ....... !'--I-~--~-T-~~ ~F--7-T -I .............. ~ ....... ~
L2- ~ ~ 1t" HDPE ~ine ~loped Back [ * I [ . '
...... ~ .... ~ ........ -To-L~ft ~tati~n For 6rain&~e~ ......................
............. +'---i ' ~ .All-Connections-Shall..~Be.-~. -.~ ............ ~ ......
{ i ] ~ Stainless Steel. , ~ ] , ] ~ ~ [~ i I
~_ q .............. ~__1._..2_2 ] 2.D._-' .....~ ~__} _3.__
.......... ~--' ~ ~ ~ i } ~ 40 ,.,~,,~or ~u~e t~ ~
LOT 13, BLOCK 6, KENO HILLS SUBDIVISION
DESIGN FACTORS:
SYSTEM REQUIREMENTS:
6 Bedroom Home
Perc. Rate: LTI Min./Inch
Application Rate: 4 GPDISF
Bottomless Inter. Sand Filter
2,000 Gallon STEP Tank
2' Coarse Sand (See Spec.)
Air Supply Line (Anch. Tank)
6" of 3~8" Pea Gravel
6 Bedrooms X 150 GPD = 900 Gallons Per Day
900 GPDI4 GPD/SF /12 LF (Width of Bed) = 18.75 LF Length of Bed
Therefore: Construct a Bottomless Intermittent Sand Filter System 12' Wide
X 30' Long. Distribution :.Piping' to he Placed at .1.5t .Below Original Ground
Surface. A Minimum of 2' of Cover Required Over Bed.
PLaN VIEW ...
NOTE:
BOTTOMLESS SAND FILTER DETAIL
Grade Area to Dra~n Away.
· , ·
Maintain 6 Separatton From Bedrock.
Provide 4' of Cover or 2" Insulation and 2' Cover.
Grade Surrounding Area to Drain Away.
LOT 13, BLOCK 6, KENO HILLS SUBDIVISION
DESIGN FACTORS:
SYSTEM REQUIREMENTS:
6 Bedroom Home
Perc. Rate: LTI MinJInch
Application Rate: 4 GPD/SF
Bottomless Inter. Sand Filler
2,000 Gallon STEP Tank
2' Coarse Sand {See Spec.)
Air Supply Line {Anch. Tank)
6" of 318" Pea Gravel
~ Bedrooms X 150 GPD = 900 Gallons Per Day
900 GPD/4 GPDISF 112 LF (Width of Bed) = 18.75 LF Length of Bed
Therefore: Construct a Bottomless Intermittent Sand Filter System 12' Wide
X 30' Long. Distribution Piping to be Placed at 1.5' Below Original Ground
Surface. A Minimum of 2' of Cover Required Over Bed.
f' 2" 'Direct Bury
~Lff~ F;U~ Insulation
t'
NOTE:
D E T A I L." ~.,.'~.~\-.~
BOTTOMLESS SAND FILTER
(NO SCALE)
Grade Area 1o Drain Away.
Maintain 6' Separation From Bedrock.
Maintain 4' Separation From Groundwater.
Provide 4' of Cover or 2" Insulation and 2'
Grade Surrounding Area to Drain Away. ' "~ --~-~'-~"~''~'~'-
Municipality of Anchorage
Department of Health & Human Services
825 L Street, Anchorage, AK 99502-0650
SOILS LOG - PERCOLATION TEST
Performed For: Bill Westhusing
Legal Description: Lot 13 Block 6 Keno Hills Subdivision
SLOPE
North
1 OG/OL ·
Date Performed:
SITE PLAN
2
TESTHOLE NO. 1
4
5
See Site Plan
6 GM/SW
7
8
9
10
11
South
Was Groundwater
Encountered? Ye~ El ~
If Yes, What Depth? 9' 2%
Depth to Water O I
Bedrock After Monitoring 7' P I ~
Date: 5/2/00 ' E
12
13
Reading Date
Gross Net Depth To Net
Time Time Water Drop
14
15
16
17
18
'21
Perc. Rate: <1 Min./Inch Perc. Hole Diameter: 6"
Test Run Between 3.5 Ft. and 4.5 FL
Comments: Water Absorbed As Fast As It Was Added To Percolation Test Hole.
Performed By: Jim Williams. I, Michael E. Anderson Certify That This Test Was Performed
In Accordance With All State and Municipal Guidelines In Effect On This Date: 4/21/00
Municipality of Anchorage
Depadment of Health & Human Services
825 L Street, Anchorage, AK 99502-0650
SOILS LOG - PERCOLATION TEST
Performed For: Bill Westhusing
Legal Description: Lot 13 Block 6 Keno Hills Subdivision
SLOPE
North
1 OG/OL
2
3
4
5
MI/GM
Dense
TESTHOLE NO. 2
See Site Plan
6
7
8
9
10
11
GMISW
Very Dense
Hard Digging
Bedrock
South
Was Groundwater
Encountered? Yes
If Yes, What Depth? 7'
Depth to Water
After Monitoring 7' '
Date: 5/2/00
12
13
Reading Date Gross Net Depth To Net
Time Time Water Drop
14
15
16
17
18
21
Perc. Rate: <1 Min.llnch Perc. Hole Diameter: 6"
Test Run Between 3.5 Ft. and 4.5 Ft.
Comments: Water Absorbed As Fast As It Was Added To Percolation Test Hole. '
Performed By: Jim Williams. I, Michael E. Anderson Certify That This Test Was Performed
In Accordance With All State and Municipal Guidelines In Effect On This Date: 4/21/00
ON-SITE WASTEWATER DISPOSAL SYSTEM
CONSTRUCTION AND MATERIAL SPECIFICATIONS
SUBJECT: LOT 13, BLOCK 6, KENO HILLS SUBDIVISION NO. 6
GENERAL:
The scope of this project includes the procurement and placement of a
new 2,000 gallon combination septic tank and lift station and pressure
distribution system. Work also includes the construction of a new 30'
long x 12' Bottomless Intermittent Sand Filter at the location shown on
the attached Site Plan. All existing organic matedal must be excavated
to the silty gravel layer below which is expected to be at least 2' below
the original ground surface. A minimum of 2' of coarse sand meeting
the attached specification must then be imported, and placed in the
filter area. The filter must then be constructed atop the imported
material in conformance with specifications furnished by the supplier.
A minimum of 2" of direct bury insu. lation must be place.d atop the filter
and 2' of natural backfill atop the Insulation. In lieu of insulation 3' of
cover may be placed atop geotextile fabdc over the new filter.
Construction shall be in accordance with the approved site plan,
design drawings, Municipal Permit with any spec!al provisions or
conditions, and all applicable State and Municipal Wastewater
Disposal Regulations.
The Contractor shall be responsible for obtaining all underground utility
locates and for the layout of the septic system and verification of the
location of all lot lines.
Unless specifically agreed otherwise, the contractor shall be
responsible for final grading areas subsequently depressed from soil
settling. Property owner shall be responsible for revegetation of
affected areas unless specifically agreed otherwise.
Contractors installing wastewater disposal systems' must be certified
by the Municipal Department of Health and Human Services for
system installations. Owners installing their own systems must receive
pdor approval from D.H.H.S. before beginning system installation.
SEPTIC TANK/LIFT STATION INSTALLATION
The 2,000 gallon septic tanldlift station must be constructed by
certified tank manufacturer. Construction shall include an 18" manhole
to provide access to the lift station.
2. The septic tank shall be sufficiently bedded to prevent settling or
shifting of the tank.
3. All standpipes on the septic tank shall extend a minimum of 12 inches
above final grade.
4. Tanks installed without 4' of cover shall have a minimum of 2" of direct
budal insulation.
Lot 13, Block 6, Keno Hills No. 6
May 15, 2000
Page 2 of 3
5. A foundation clean.ut shall'be installed one to four feet from the
building foundation. Two clean.uts are required between the tank and .
the drainfield.
6. Final gra. ding over the tank/lift station shall be such'that a positive
slope exists away from the septic tank.
ABSORPTION BED CONSTRUCTION:
1. The absorption bed shall be constructed to the dimensions shown on
the design. The bottom of the bed shall be within 2" of level.
2. Distribution piping must be placed level with perforations down atop a
level bed of drainfield rock. Rock should then be placed over the pipe
to provide a minimum of 2" of cover.
3. A silt barrier or ge,textile fabric must be placed between the drainfield
rock and the natural soil backfill.
4. Monitor tubes must be 4" in diameter and installed at the locations
shown on the design. The portion below ground must be perforated.
Contractor shall verify the septic tank and drainfield are a minimum
100' away from any private water wells in the area, 150' from a Class
"C" Well or 200' from any community well.
Direct bury insulation must be placed over the distribution system if
less than 3' of backfill depth is available. Finish grade over the trench
must be mounded to prevent settlement or depressions.
7. Grade area surrounding the absorption trenches to drain away.
A minimum 2' of accepting soil is required below the drainfield rock for
a 5' wide trench. Contractor shall verify this condition pdor to
placement of the rock. Ail pockets of unacceptable materials must be
removed and replaced.
MATERIAL SPECIFICATIONS:
The lift station must be constructed by a Municipally approved septic
tank manufacturer. An Orenco 20 OSI 05 HHF-5 pump is
recommended.
2. The following pipe materials are approved for use in septic system
installations in the Municipality of Anchorage:
Cast Iron (perforated and solid), ASTM D3034 or P.V.C. (perforated
and solid), ASTM F810 or H.D.P.E. (perforated, but not solid) and
ASTM D2662 or A.B.S. (perforated and solid).
3, Insulation shall be at least 2" thick extruded direct burial polystyrene
(Dow Chemical Co. Styrofoam HI or equal).
4. Septic tank inlets and outlets shall be fitted with watertight couplings
(Caulder, Femco, or equal).
Lot 13, Block 6, Keno Hills No. 6
May 15, 2000
Page 3 of 3
5. A permeable geotextile fabric (Typar, Mirafi or equal) must be installed
between the final drain rock layer and the native soil layer.
6. All drain rock shall be .5" to 2.5" in diameter with less than 3% passing
the #200 sieve. '
EQUIPMENT SPECIFICATIONS:
Air Supply Line shall be a Wasteflow Emittedine, %" inside diameter
from Anchorage Tank. Line shall be insulated with %" foam pipe wrap
inside a 2" Schedule 40 PVC Jacket buried a minimum 3' below the
surface. ,
Air Compressor shall be a Thomas Industries Model 5070 as supplied
by Anchorage Tank. Compressor shall be located in the garage or
crawlspace.
A pressure gauge calibrated from 0 to 10 PSI shall be furnished and
installed in line with the air line, The gauge shall be mounted in an
area which provides easy viewing access such as the garage,
INSPECTIONS:
A minimum of two inspections are required by Municipal Ordinance.
These inspections must be conducted under the supervision of a
professional engineer registered in the State of Alaska. The first
inspection must be conducted after the excavation of trenches, beds or
pits and before the installation of any gravel. A septic tank may be set in
place, but may not be backfilled.
The second inspection must be conducted after the placement of the
geotextile fabric, gravel, distribution piping, standpipes, cleanouts and
insulation. No backfill should be in place at the time of inspection.
Contractor shall provide a copy of all field survey layout and construction
notes for use in preparing the certified as-built of the completed system.