HomeMy WebLinkAboutCROSS VIEW ESTATES BLK 1 LT 13C oss View
lock I
Lot I
015-301
-61
Permit Number:
Tax Code Number:
Work Type:
On-Site Water & Wastewater System Permit
OSPl11257
01530161000
WellSeptic
MUNICIPALITY OF ANCHORAGE
Development Services Department
On-Site Water & Wastewater Program
4700 Elmore Road, PO Box 196650
Anchorage, AK 99519-6650
Telephone: (907) 343-7904
Initial
Permit Effective Dates: September 28, 2011 to September 27, 2012
Design Engineer: ANDERSON ENGINEERING
Subdivision: CROSS VIEW ESTATES
Site Legal Address: CROSS VIEW ESTATES BLK 1 LT 13 G:2737
Owner/Address: H2L INVESTMENTS LLC
633 E 81ST AVE ANCHORAGE AK 995180000
Site Mailing Address: 5317 HERITAGE HEIGHTS DR, Anchorage
Lot Size in Sq Ft: 50276
Total Bedrooms: 4
This permit is for the construction of:
Y Disposal Field Y SepticTank N Holding Tank N Privy Y Private Well N 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 wastewater code requires inspections during the installation. The engineer must notify the Development Services
Department at least 2 hours prior to each inspection. Provide notification by calling (907) 343-7904 (24 hours).
4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather must either:
A. Open and Close on the same day.
B. Covered, sealed, and heated to prevent freezing.
Received BY:f~~ i~:~i~ Date:
MUNICIPALITY
OF ANCHORAGE
Community Development Department
Development Services Division
On-Site Water & Wastewater Program
Mayor Dan Sullivan
~ Phone:907-343-7904
Fax:907-343-7997
ON-SITE SEWER/WELL PERMIT APPLICATION
FOR A SINGLE FAMILY DWELLING
Parcel I.D. ~::)/~"--~O/~-' ~' I
Property owner(s) ~_.j:Z.OiJ~,j 'Po~¢'t'~ i '~'~"~". Day phone
Mailing address 'PO 'l'~O,/, IIZ~i
Site address ~e="1¢44 ,r'A
Legal description (Sub'd., Block & Lot)
Legal description (Township, Range & Section)
Lot Size CC): Z-~ Sq. Ft. Number of Bedrooms ~1~.. ~)
THIS APPLICATION
([] all that apply)
Absorption Field [~'
Septic Tank [~
Holding Tank []
Privy []
Private Well ~
Water Storage []
IS FOR:
THIS APPLICATION IS AN:
Initial '~ ~"~,
Upgrade ~
Renewal []
THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR:
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/Rush Fees:
Date of Payment:
Receipt Number:
Permit No.
Waiver Fees:
Date of Payment:
Receipt Number:
Waiver No.
G:\Building\On Site\Forms\Client Forms\Permit App_010411 .doc (Rev. 1111 )
ANDERSON ENGINEERING
P.O. BOX 240773
ANCHORAGE, AK 99524
522-7773 677-7766 (FAX)
September 20, 2011
Municipality of Anchorage
Development Services Department
On-Site Water and Wastewater Program
4700 South Bragaw Street
Anchorage, AK 99519-6650
Subject:
Lot 13, Block 1, Cross View Estates Subdivision
Septic System Design and Permit Application
Impacts to Adjacent Properties
Dear Onsite Services Engineer:
The owner of Lot 13, Block 1, Cross View Estates Subdivision intends to construct a
new four-bedroom home on the lot. We are therefore requesting a permit be issued for
'~ of a new well and septic system to accommodate the home. The
attached Site Plan and backup documentation identify the location and configuration of
the proposed well and septic system along with the alternate site. Also identified on the
plans are the existing wells and septic systems on surrounding lots. No conflicts exist
between the proposed septic system and well or septic systems and wells on adjacent
lots. Drainage arrows are shown on the site plan showing the grade and direction of
flow on the lot. The drainage pattern will not be changed as a result of this project.
Two test holes were placed on the lot in the area of the absorption trench and alternate
site. The logs indicate silty sand (SM) in the zone specified for the absorption trench.
The percolation rate of the soil was determined to be 5 minutes per inch. No
groundwater was found during the placement of the test holes and none was noted
during the monitoring period. An application rate of 1.2 gallons per day per square foot
was used in the design of the absorption system. We are proposing to place a new
1,250-gallon septic tank and a 50' long by 5' wide by 4' effective depth absorption
trench to treat and dispose of the effluent generated in the house. The elevation of the
distribution line in the absorption trench will be 6' below the surface and the total depth
will be 10'. A minimum of 3' of fill or 2" of insulation and 2' of fill will be placed over the
absorption trench and 4' over the septic tank.
The ground surface on the lot in the area of the septic system slopes to the northwest.
The new trench will be constructed parallel with the contours of the slope as much as
possible in conformance with Municipal requirements. The new septic system will be
Lot 13, Block 1, Cross Point Estates Subdivision
September 20, 2011
Page Two
constructed a minimum of 100' from all wells and any surface water and 10' the
proposed and existing water services in the area.
If the system is constructed in accordance with our design the following statements
apply:
o
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.
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.
The system, if constructed as designed, will have no adverse impact on reserve
space, either surface or subsurface, on any lots located in the area.
The system, if constructed as designed, will have no adverse impact on drainage
patterns in the area. The current drainage pattern will be maintained.
Sincerely,
Michael E. Anderson, P.E.
Attachments
[
\
COMMUNITY WATER SYSTEM
..........................................................................LOT 12, BLOCK I LOT 13, BLOCK 1
.--
LOT 14. BLOCK 1
VACANT
AREA
MAP
SCALE 1~ = 100'
CROSS
20' X 40'
GAS ESMT. ' '
20' STORM
DRAIN ESMT. - ·
2006-171
VIEW ESTATES SUBDIVISION
LOT 15, BLOCK 1
50,276 S.F.
N 89°47'24"E I84.77'
10' T. & E. ESMT.
GTH2
50' Long x 5' Wide CO~....J~-----"~(DTH1CO~
x 4' Effective Depth "-~T \ ~ ,,_
Absorption Trench ~ ~
~ ~ ~CO(2)
SVI 1,250 Gallon
~ ~ Septic Tank
~ sv
/ I Four Bedroom 1
II G. SLAB I
ilE'' = 62°' ___r--~-=~ -. J
Proposed II ~
A*C' DRIVE /
....
S 8g'54'lS"E 91.32' L=45.2;
HERITAGE HEIGHTS DRIVE
SITE
PLAN
SCALE 1" = 50'
LEGEND
MT - Monitor Tube
FCa -Foundotlon Cleon Out
TH -- Test Hole
CO - Cleon Out
NOTE:
No Areas of Excessive Slope or
Surface Water ore Within 100' of Any
Part of the New Septic System.
LOT 13, BLOCK 1, CROSS VIEW ESTATES SUBDIVISION
DESIGN FACTORS: SYSTEM REQUIREMENTS:
Four Bedroom Home 5' Wide Trench System
Perc. Rate: 1-5 Min./Inch 1,250 Gallon Septic Tank
Application Rate: 1.2 GPD/SF 4' Drainfield Rock
4 Bedrooms * 150 GPD/Bedroom = 600 SF Absorption Area
600 SF/1.2 GPD/SF/5 SF (Width) *.5 (Red. Factor)= 50 LF Trench Length
THEREFORE: Construct a 50' Long x 5' Wide x 4' Effective Depth Absorption Trench.
Flow Line Elevation in Trench to be 6' Below Original Ground Surface. Total Depth to be
10' Below Existing Ground. Provide 3' Cover Over Absorption Trench and 4' Cover Over
Septic Tank.
~Geotextile Fabric
4" Perforated
PVC (Holes Down)
Drainfield Rock
!
TYPICAL 5 WIDE TRENCH SECTION
Performed For:
Legal
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7~
8-
9-
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19-
20-
COMMENTS TEST HOLE #1:
Municipality of Anchorage
Development Services Department
Building Safety Division
On-Site Water and Wastewater Program
4700 Elmore Road
P.O. Box 196650 Anchorage, AK 99507
www. ci.anchorage.ak.us
(907) 343-7904
Soils Log - Percolation Test
Harding Homes of Alaska, Inc.
Cross View Estates Subd., Lot 13, BIk 1
Slope
WAS GROUND WATER
ENCOUNTERED? .NO
S
IF YES, AT WHAT DEPTH? XXX L
Depth to Water After i~'~ ~,~"' Op
Monitoring? E
Date: 9/16/11
Date Pedormed: Fd, Sept 9, 2010
Township, Range, SeCtion:
Reading Date Gross Time Net Time Depth to Water Net Drop
9/9/11
IS:, ~ a~ ~I~ (';.~',~" ~,~"
,, ~{~ ~ ~,~ II.~" ~.~"
PERCOLATION RATE 5 (minutes/inch) PERC HOLE DIAMETER
TEST RUN BETWEEN -6.5 FT AND -7.0 FT
perc test cavity was presoaked-
PERFORMED BY:
A. Harala
I-~I~,- ~¢~ CERTIFYTHATTHISTESTWAS
PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE:
Performed For:
Legal D, scdption:
9-
10-
11-
12-
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1
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COMMENTS TEST HOLE #3:
Municipality of Anchorage
Development Services Department
Building Safety Division
On-Site Water and Wastewater Program
4700 Elmore Road
P.O. Box 196650 Anchorage, AK 99507
www. ci.anchorage.ak, us
(907) 343-7904
Soils Log - Percolation Test
Harding Homes of Alaska, Inc.
Cross View Estates Subd., Lot 13, BIk 1
Slope
WAS GROUND WATER
ENCOUNTERED? NO
' S
IF YES, AT WHAT DEPTH? XXX L
Depth to Water After
P
Monitoring? No Water E
Date: 9/16/11
Date Performed: Fd., Sept. 9, 2010
Township, Range, Section:
Reading Date Gross Time Net Time Depth to Water Net Drop
9/9/11 I¢2; ~'¢'. .--'- ~/, ~'~" ~
PERCOLATION RATE 5 (minutes/inch) PERC HOLE DIAMETER
TEST RUN BETWEEN -7 FT AND -7.5 FT
perc test cavity was presoaked-
PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE:
ON-SITE WASTEWATER DISPOSAL SYSTEM
CONSTRUCTION AND MATERIAL SPECIFICATIONS
SUBJECT: LOT 13, BLOCK 1, CROSS VIEW ESTATES SUBDIVISION
GENERAL:
The scope of this project includes the procurement and placement of a new
1,250-gallon Septic tank at the location shown on the Site Plan. Work also
includes the construction of a new 50' long X 5' wide X 4' effective depth
absorption trench at the location also shown on the Site Plan. The
distribution line in the trench will be placed at 6' below the existing ground
surface. Total depth of the trench will be 10' below the existing ground
surface. The new absorption trench and septic tank must be placed a
minimum of 100' from all private wells and any surface water in the area and
10' from the water service line proposed for the lot. A minimum of 3' of cover
is required over the absorption trench and 4' of cover over the septic tank.
Construction shall be in accordance with the approved site plan, design
drawings, Municipal Permit with any special 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. The Contractor must also verify the location of wells in the
area and assure that the separation distances are met.
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 Building Safety Division On-Site Water and Wastewater Program
for system installations. Owners installing their own systems must receive
prior approval from the On-Site Water and Wastewater Program. before
beginning system installation.
SEPTIC TANK INSTALLATION
1. A new 1,250-gallon septic tank must be procured from an approved source
and installed at the location shown.
2. A septic tank is to be constructed by a certified septic tank manufacturer.
Construction shall include two 4" cleanouts for pumping access.
Lot 13, Block 1, Cross View Estates
September 20, 2011
Page 2 of 3
3. The septic tank shall be sufficiently bedded to prevent settling or shifting of
the tank.
4. All standpipes on the septic tank shall extend a minimum of 12 inches above
final grade.
5. Tanks installed without 4' of cover shall have a minimum of 2" of direct burial
insulation.
6. A foundation cleanout shall be installed one to four feet from the building
foundation. Two cleanouts are required between the tank and the drainfield.
7. Final grading over the tank shall be such that a positive slope exists away
from the septic tank.
DRAINFIELD CONSTRUCTION:
1. The drainfield shall be constructed to the dimensions shown on the design.
The bottom of the trench shall be within 2" of level.
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 geotextile 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 the distribution line 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 trench to drain away.
A minimum 2' of accepting soil is required below the drainfield rock for a 5'
wide trench. All pockets of unacceptable materials must be removed and
replaced.
Lot 13, Block 1, Cross View Estates
September 20, 2011
Page 3 of 3
MATERIAL SPECIFICATIONS:
1. Septic tanks must be constructed by a municipally approved septic tank
manufacturer.
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. BS. (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, Fernco, or equal).
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.
INSPECTIONS:
Municipal Ordinance requires a minimum of two inspections. 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.