HomeMy WebLinkAboutFIRE LAKE LT 4 TR POnsite File
storage#051 a= 332 a= 29
."Ef house has water storage, NSF
approved tanks
at time cl
Permit Number: {JSP 101145 Date of Issue 8/9/2090 Parcel Identification Number:
Date Started: 8/912010 Date Completed: 8/1212010 Is well located at approved permit location? OXYes E]No
Property Description FIRE LAKE TRACT P Lot 4 Block Section Town: Range:
Property Owner Name & Address: VAN BRIGGS
PO BOX 670425 CHUGIAK, AK 99867
Borehole Data:
Depth
Method of Drilling 'E] air rotary LF] cable tool
Soil Type, Thickness & Water Strata
From
To
easing type:
Casing Stickup
0
3
Wall thickness 0.25 inches
Gravel & Cobbles
3
g
Diameter 6 inches Total: 49 feet
Yellow Bedrock Fractured
8
12
Liner type:
Diameter inches Depth: feet
Green Bedrock Hard
92
79
easing stick-up above ground: 3 feet
Yellow Bedrock
71
76
Static Water Level(from top of casing) 4 `feet
Green Bedrock
76
92
Pumping Level: feet atter
Yellow Bedrock
92
904
—1 --hours pumping gpm
Green Bedrock
904
923
Recovery Rate 93 gph
Method of Testing- Air
Gray Bedrock
123
183
Well Intake Opening Type
Dark Gray Bedrock
153
294
-1 Open End I Open Hole
Gray Bedrock
294
329t
Screened Start feet Stopped feet
Green Bedrock
329
400
; Perforations Start feet Stopped. feet
Grout Type: Bentonite dry granular_ Volume: 500 Pounds
Depth 44 Start o feet Stopped 44 feet
Pump Intake Depth: feet
Pump size: HP brand name
Well disinfected upon Completion? Lj Yes ,`'D No
Method of disinfection CHLORINE 50 PPI
Comments: WELL COMPLETED TO CURRENT MOA
STANDARDS. WELL YIELD IS 93 GALLONS PER
HOUR
Water Sample Results:
Arsenic:
ug/l
Well Driller:
Nitrates
mg/l
Cole Sullivan
Sullivan Water Wells
Total Coliform Bacteria
colonies/100mL
P.O. Box 670272
Chugiak, Alf 99567
Other bacteria:
col/100mL
(907) 688-2759
I Attention: The property owner shall provide this log to DSD (onsite) and DNR within 30 days of completion
On -Site Water System Permit
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
Permit Number: OSP101145
Tax Code Number: 05133229000
Work Type: Well Renewal
Permit Effective Dates: August 09, 2010 to August 09, 2011
Design Engineer:
Subdivision: FIRE LAKE
Site Legal Address: FIRE LAKE LT 4 TR P G:0554
Owner/Address: BRIGGS VAN
PO BOX 670425 CHUGIAK AK 995670425
Site Mailing Address: 18990 FISH HATCHERY RD, Eagle River Lot Size in Sq Ft: 108900
Total Bedrooms: 2
This permit is for the construction of:
N Disposal Field N Septic Tank 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.
Special Provisions: If the existing water storage is not removed, the water storage must be added
to the permit for review. No charge.
Received B
Issued By:
By
Date:
CSC
�" Date: � ��%
Municipality of Anchorage
• Development Services Department
Building Safety Division
On -Site Water and Wastewater Program
4700 Elmore Road
P.O. Box 196650
0 Anchorage, Alaska 99507
° } www.muni.org/onsite
(907) 343-7904
ON-SITE SEWER/WELL PERMIT APPLICATION
FOR A SINGLE FAMILY DWELLING
Parcel I.D. 0-5 J , _-67,12-29.
Property owner(s
Mailing addres
Site address
Legal description (Sub'd., Block &
Legal description (Township, Range & S
Lot Size 2 L -Z- - (' Sq. Ft.
THIS APPLICATION IS FOR (® all that apply):
Absorption Field
❑
Septic Tank
❑
Holding Tank
❑
Privy
❑
Private Well
M_
Water Storage
❑
/ phone X5-2 G ,
Code
Code
1Tc c P Lo y
Number of Bedrooms 2-
Initial
Upgrade
❑
Renewal
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 fir authorized agent)
Permit/Rush Fees: )(�) _� / Z Waiver Fees:
Date of Payment: — A /o Date of Payment:
Receipt Number: 1 3 q H Li -7 Receipt Number:
(Rev. 11/05)
PERMIT No. -SWO.70116
PAGE 2 OF 3
Municipality of Anchora e
T f
DEPARTMENT OF HEA -LITH AND HNIIAN SERVICES
ENVIRONMENTAL SERVIC'EIS DIVISION
P.O. Box 196650 e, Anchorage, Alaska 99519-6650 @ Telephone: 343-4744
On—Site Wastewater Disposal System and/or Well Inspection Report
LEGAL TRACT P, LOT 4, FIRE LAKE S
SCALE t" = 50'
P.I.D. NO. 051-332-29
0&
LO T Q
PARKING
C:
L7
o
MTC2
BEDROOM��
DATION
FC
DOUBLE
CLEANOUT
STATE OF ALASKA
(UNDEVELOPED)
Municipality of Anchorage
Development Services Department ~'"':':i~.i'~
Building Safety Division
On-Site Water and Waslewaler Program, 4700 S. Bragaw St.~
P.O. Box 196650 Anchorage, AK 99519-6650 Page
~.ci.anchorage.ak.us (907) 343-7904
ON-SITE WASTEWATER DISPOSAL SYSTEM AND/OR WELL INSPECTION REPORT
Permit Number: ~0~~ PID Number: ~ ~ '-~'~--~
~ ~ ~1~ Wastewater System: ~New ~ Upgrade
Address:
0~,,,~__~%¢~ ABSORPTION FIELD
'~ , ~ Deep Trench ~ Shallow Trench ~ Bed ~ Mound ~ Other:
LEGAL DESCRIPTION so,.~,.~: ~o~, ~..,~, ..... ~.,.~,
~ Subdivision: Depth Io pipe bollom from oHginal grade; Gravel deplh benealh pipe
" - i 0,4
Township: Range: Seclion: Fifl added above original grade: Gravel Length:
~ B New ~ Upgrade o,.,., widlh: ~ Ft. ~I
Drifter: ~ Dale Drilled: SlalicWoler Level: Dale In~lalled:
Yield: ~ Pump Sol al: ~~o~ Ground;
~m. ~"1~. ~t TANK
SEPARATION DISTANCES ~ Septic ~ Holding ~ S.T.E.P. D Other:
Tank Field Slalion Tank Sewer Line ~t~l 7 ~% ~000
w.,, Joe'+ 100% -- -- Zb'~ "~'~'~":Abe& """'~°'°'°°""~b"~""
s,,...ow.,.. Io~ ~ Ioo + ~ -- LIFT STATION
---
Gal
roundaliorl ~ ~ j ~ ~ "Pump on" level gl: "Pump afC' level ~1: High waler almm
in in
BENCH MARK
Locmllon end Description:
Engineer's Slamp,
~hu¢~k, Alaska ~7 2® '~- ~ ~
,r .... / .......
Development Services Department Approval ~~"~.~ ....... :?,,:.,~.~,.: .~,~ ,
Reviewed and approved by: ~: ~¢~ Date: ¢ ~"~%Z -: :
z
i Municipality of Anchorage
Building Safety Div. isi0n.'
On-Site Water & Wastewater program
Field Audit' Report .' ,-
Follow-up Notes: ' '
MUNICIPALITY OF ANCHORAGE
Development Services 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 / WATER SUPPLY PERMIT
Renewal
Date Issued: Jul 03, 2008
Expiration Date: Jul 03, 2009
Permit Number: SW080108
Legal Description: FIRE LAKE LOT 4 TRACT P
Design Engineer: 0003 S & S ENGINEERING
Owner Name: VAN BRIGGS
Owner Address: PO BOX 670425
CHUGIAK, AK 99567-
Parcel ID: 051-332-29
Site Address: NHN FISH HATCHERY ROAD
Lot Size: 108900 SQ. FT.
Total Bedrooms: 3 Permit Bedrooms: 3
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 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.
7/?>¢
Received By:
Issued By:
Date:
Date:
Municipality of Anchorage
Office: (907) ~3-8501 · Fax: (907) 345-8200 http.//xxaxav muni org
Mayor Mark Begich
Development Services Department
Department
July 3, 2008
Robert Cowan, P.E.
S&S Engineering
17034 Eagle River Loop Road, Suite 204
Eagle River, AK 99577
Subject:
Waiver Request for Fire Lake, Tract P Lot 4
Waiver Request WR#: 080042
Parcel ID # 051-332-29
SW080108
Dear Robert Cowan, P.E.:
Your request for a waiver of the required 10 feet horizontal separation from the
absorption field to the property line has been approved. The approved separation
distance is 0.0 feet.
This waiver approval applies to the proposed primary and reserve absorption fields to
property line separation only. Any future upgrade to the on-site wastewater disposal
system will require all separation distances be met or another approval from this
department.
If there are any further concerns or questions regarding this waiver, please call our office
at 343-7904.
Sincerely,
Deb Wockenfuss //
Civil Engineer
On-Site Water & Wastewater Program
Community, Security, Prosperity
Municipality of Anchorage
Development Services Department
Building Safety Division
On-Site Water and Wastewater Program
4700 Bragaw Street
P.O. Box 196650 Anchorage, AK 99519-6650
www.ci.anchorage.ak.us
(907) 343-7904
Waiver Review Worksheet
WR#: 080042 PID#: 051-332-29 HNPermitg
Date Received: July 3, 2008
Legal Description: Fire Lake, Tract P Lot 4
Engineer:
Robert Cowan, P.E.
S&S Engineering
17034 Eagle River Loop Road, Suite 204
Eagle River, AK 99577
Applicant: Van Briggs
Waiver Requested: 0' lot line waiver
SW080108
Criteria: Geology Points:
A. Water Table
B. Soil Sorption
C. Permeability
D. Water Table Gradient
E. Horizontal Separation
Total:
Waiver is Granted: X Waiver is not Granted:
List Conditions or Reasons for above:
Date: 07103/08 By: Deb Wockenfuss
Name of Reviewer
Rec#: 1570D Amount: $t75 Date Paid: 7/312008
Municipality of Anchorage
~Oevelopment Services Department
Building Safety Division
On-Site Water and Wastewater Program
4700 Bragaw Street
P.O. Box 196650
Anchorage, AK 99519-6650
www. muni.org/onsite
(907) 343-7904
ON-SITE SEPTIC/WELL PERMIT APPLICATION
FOR A SINGLE FAMILY DWELLING
Od.t --- 5...¢- -gq
Site address
Parcel I.D.
Property owner(s)
Day phone
4 Y-- :i. Ood
Legal description (Sub'd, Block & Lot)
Legal description (Township, Section & Range)
Lot Size iOC~ ~ (~OC) Sq. Ft.
Number of Bedrooms
THIS APPLICATION IS FOR ([~all that apply):
Absorption Field []
Septic Tank []
Holding Tank []
Privy []
Private Well []
Water Storage []
THIS APPLICATION IS AN:
Initial []
Upgrade []
Renewal []
I ce~ify 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.
(Signa~ur; of pr~'~erty ~aw~er or authorized agent)
Permit/Rush Fees: /
Date of Payment: ~?//~/
Receipt Number:
(Rev. 11/05)
Waiver Fees:
Date of Payment:
Receipt Number:
ROBERT C. COWAN
CIVIL ENGINEERING
July 3, 2008
PH: 907-694-2979
FAX: 907-694-1211
HEALTH A~HORITY
N~PROVALS
SEWER & WATER
~IN EXTENS~O~
SEWER & WATER
~NSPECT)ON
£NGi NEERING ST UOIES
REPORTS
WELL ~NSPECr~ON
& ROW TEST
SiTE PLANS
SO~L TEST
P~RCOLATtON
TEST
STRUCTURAL &
MECHN',IIC.,N,.
~N~,PECTIONS
ON SITE
WAST EW'ATE R
~PO~AL SYSTEM
DESIGN
MUNICIPALITY OF ANCHORAGE
Development Services Department
p.O. Box 196650
Anchorage, AK 99519
REFERENCE: Lot 4; Tract P; Fire Lake Subdivision
Request you grant a waiver on the referenced property for the h.,0r~Qntal ~paration
distance between the proposed alternate leachfield and the eastCtl~roperty ~ne at 0 feet
in order to maintain separation distance from the primary trench and the alternate
trench.
We do not anticipate any adverse effects.
If you require additional information, please contact us.
Sinc/~~
WAIVER FEES: //~/'~,~- ~
DATE OF PAYMENT: '"~/;~//~)~'
RECEIPT NUMBER: I~'~O D
15861 S. Birchwood Loop Road - C_ hugiak, Alaska 99567
MUNICIPALITY OF ANCHORAGE
Development Sen/ices 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 I WATER SUPPLY PERMIT
Initial
Date Issued: Jun 19, 2007
Expiration Date: Jun 18, 2008
Permit Number: SW070116
Legal Description: FIRE LAKE LOT 4 TRACT P
Design Engineer: 0003 S & S ENGINEERING
Owner Name: VAN BRIGGS
Owner Address: PO BOX 670425
CHUGIAK, AK 99567-
Parcel ID: 051-332-29
Site Address: NHN FISH HATCHERY ROAD
Lot Size: 108900 SQ. FT.
Total Bedrooms: 3 Permit Bedrooms: 3
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. Ail 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.
Municipality of Anchorage
Development Services Department
Building SafebJ Division
On-Site Water and Wastewater Program
4700 Bragaw Street
P.O. Box 196650
Anchorage, AK 99519-6650
www.munLorg/onsite
(907) 343-7904
ON-SITE SEPTIC/WELL PERMIT APPLICATION
FOR A SINGLE FAMILY DWELLING
Parcel I.D.
Property ownerCs).
Mailing address
Site address
Legal description (Sub'd, Block & Lot)
Day phone
Zip Code
Legal description (Township, Section & Range)
Lot Size J o<~, ~DO Sq. Ft.
Number of Bedrooms ..~
THIS APPLICATION IS FOR ({~all that apply):
Absorption Field ~
Septic Tank ~[
Holding Tank ~
Privy
Private Well ~[
Water Storage []
THIS APPLICATION IS AN:
Initial ~
Upgrade ~
Renewal
I certify that the above information is correct. I further cedify that this application is being made for a
Single Family Dwelling and is in accordance with applicable Municipal Codes.
(Signature of properly owner or authorized agent)
PermiVRush Fees: /~Oq J3'/q-5'-'~'/'~ Waiver Fees:
Date o,
Receipt Number: ~ Receipt Number:
(Rev. 11~5)
June 15, 2007
ROBERT C. COWAN, P.E..
CIVIL ENGINEERS
(907) 694-2979
FAX (907) 694-12 ! t
RO~DDEStGN
MUNICIPALITY OF ANCHORAGE
Development Services Department
P.O. Box 196650
Anchorage, AK 99519
REFERENCE: Lot P, Section Lot 4, Fire Lake Subdivision
It is requested that you issue a permit to install a new well and a new septic system to
serve the proposed three bedroom dwelling on the referenced property.
Two test holes were excavated and percolation tests performed. The approximate locations
of the test holes are located on the attached site plan. At the time of excavation (5-19-07)
water was found at 11 feet. After seven days of monitoring, no ground water was found.
We do not anticipate any adverse effects on neighboring wells, septic systems, reserve
areas or drainage patterns by the installation of the proposed septic system. The
construction of this system will not prevent any future development on any of the adjacent
properties.
lfyou require additional information, please contact us.
Sincerely,
Robert 12. Cowan, P.E.
Enclosure
1"=60' SCALE DESIGN SITE-PLAN
~ XoF~ ~ "
..
'
o
: ~ - - ~ _ ~o~
~- -30~
SCAL
DESIGN
Z-Do
~J
r- i
i.~SITE~PLAN
0
0~0
~m~
1" = 10'
I DESIGN J
PROFILE
iC)
TEST HOLE !
SIT£
Roo~ Hass
2- Poorly Graded ,
3- Sond Cobbies
4 ~ SP
5--
7--
e -- --TH2
e~ : TeST (~ ~TH1
10 -- HOLE
11 -- Seepage e I1'
~AS GROUND WATER SLOPE
14 -- ENCOUNTERED? Y
15 l? Y[~. AT WHAT TEST HOLE
~DH D~PTH? ~ 11'
DEPTH TO WAT[~ AFT[~
DAT[z 5/~5/07 D~v
$ 11:30 7 MIN 11.8' 5,79
PERCOLATION RATE 1.0 (mln/inch) PERC Hi]L[ DIAHETER 6 inches
TEST RUN BETWEEN 5 FT AND 6 FT
DATE PERFORMED: 05-19-07
COMMENTS: Test hole excavated by Little Bear Excavating. Test Hole was presoaked before perc test. Test ran
for 1 hour- last 3 readings reported.
PERFORMED BY: Steven R. Pannone, P.E. I CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE
WITH ALL STATE AND MUNICIPAL OUIDLINES IN EFFECT ON THE DATE OF THIS TEST.
_~.~-~.~.~..."~_~ P.O. BOX 102954 ANCHORAGE, AK 99510 05-21-07
f~ PHONE (907) 272-8218 FAX (907) 272-8211 Scome
'f~ _~E pj4~_ /~ Van Briggs
'I,~A- 27-~ TEST
OR Oroonics i
1-- Root Hoss
2-- Poorly
3-- SP/ S~nds p
4-- GP Cobbles
7--
8--
--TH2 9--
10 -- HOL£
11 --
~OU
WAS GROUND WATER SLOPE
14-- ENCOUNTERED? Y
TEST HOLE
15 -- Ir YES. AT WHAT
DEPTH? SeeDs e 14'
16 --
DEPTH TO WATER AFTER
17-- NON[TORINO?
DATE, 5/25/07 Domo @ 15.5'
18 --
WATER
TIMe R£AD[NG
2 11:38 7 MIN 11.65' 6.10
5 11:45 5.55'
5 11:45 5.55'
PERCOLATION RATE I.O (rain/inch) PERC HOLE DIAMETER 6 inches
TEST RUN BETWEEN 6 FT AND 7 FT
DATE PERFORMED: 05-19-07
COMMENTS: Test hole excavated by Little Bear Excavating. Test Hole was presoaked before perc test. Test ran
for 1 hour- last 3 readings reported.
PERFORMED BY: Steven R. Pannone, P.E. I CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE
WITH ALL STATE AND MUNICIPAL GUIDLINES IN EFFECT ON THE DATE OF THIS TEST.
~'.b.%.~.. .... ';.'?,S'.;..q~ P.O. BOX 102954 ANCHORAGE, AK 99510 05-21-07
PHOHE (907) 27 -82 8 tAX (90?) 272-8211
. ,'-,0'
~":_~*'~ ~, Section Lot 4 Fire Loke SD
)41-Oll-0(
~£RUIT NO.
?~'.. CE 8149 .~ Van Driggs
'{ ~ ,~/:~,5,- 2 7 - ,qT~,~ TEST
,~;rt~q~o.~,.~,.r~%x,~ Sheet
· ' "~' ~:*~:C~'" HOLE
15 June 2007
Reference: Lot P; Section Lot 4; Fire Lake Subdivision
Subject: Owner lastallation of Private Septic System
To Whom It May Concern:
I am the owner of the referenced lot and am installing the septic system on the lot. I am
familiar and experienced with the operation of the required equipment, as well as the
installation ofthe septic systems.
I will, install the system in accordance with the design done by S&S Engineering; and
have S&S Engineering do all the required inspections and documentation.
Thank You,
ROBERT C. COWAN, P.E.
CML ENGINEERS
(907) 694-2979
FAX (907) 694-I 2 ~11
ON-SITE WASTEWATER DISPOSAL SYSTEM
CONSTRUCTION PRACTICES
and
MATERIAL SPECIFICATIONS
REFERENCE: Lot P, Section Lot 4, Fire Lake Subdivision
June 15, 2007
GENERAL:
The scope of this project includes the installation of a new 1000 gallon HDPE
septic tank and a septic trench to serve the proposed three bedroom residence
located on the referenced property.
Construction shall be in accordance with the approved site plan and 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 any necessary underground
utility locates.
Unless specifically agreed otherwise, the property owner shall be responsible
for final grading areas subsequently depressed from soil settling.
Contractors installing wastcwater disposal systems must be certified by the
Municipal Development Services Department or ADEC if required, for
system installations. Owners installing their own systems must also receive
prior approval from the respective agency.
SEPTIC TANK INSTALLATION:
A septic tanlc is to be constructed by a certified septic tank manufacturer.
Conslxuction shall include two 4" cleanouts for pumping access. All HDPE
septic tanks are required to have a 4" monitoring pipe installed next to the
tank extending to the bottom ofthe tank.
Page 2
Lot P,$actlon Lot4, Flre Lake Subdivision
June15,2007
The septic tank shall be sufficiently bedded to prevent settling or shifiing of the tank.
All standpipes on the septic tank shall extend a minimum of 12 inches above final grade.
Septic tanks installed with less than 4 fi. of cover shall be insulated. All HDPE septic
tanks are required to be covered with a minimum 6f2" direct burial insulation.
A foundation cleanout shall be installed one to four feet from the building foundation. In
the line between the tank and the leachfield there shall be two adjacent cleanouts (unless
an effluent pumping system exists within the septic tank). These cleanouts shall be
located on undisturbed soil not more than 10 ft. from the tank. The first cleanout, in line,
shall be to clean toward the leachfield. The second cleanout shall be to clean toward the
septic tank.
Final grading over the septic tank shall be such that a positive slope exists away from the
septic tank.
ABSORPTION TRENCH/DRAINFIELD INSTALLATION:
Excavate the proposed trench to the dimensions shown on the design. The bottom of the
excavation shall be within 2 inches of level. If the sidewalls of the excavation become
smeared, they must be raked or scratched (rafted-up) before gravel (sewer rock)
placement.
Once the gravel is installed, the distribution pipe is to be installed level with the
perforations faced downward. Gravel is then to be placed over the distribution pipe to
provide a minimum of 2 inches of cover over the pipe.
A silt barrier must be installed between the final gravel layer and the native soil backfill.
Ensure the silt barrier covers the entire gravel surface before placing backfill.
Monitor tubes shall be of four (4) inch diameter, installed approximately in the locations
shown on the design, and extend a minimum of 12 inches above final grade. The portion
of the monitoring tube extending through the gravel shall be perforated from the bottom of
the trench to the invert of the distribution pipe. This is equivalent to the effective depth of
the gravel as noted on the design.
Backfill over the final gravel layer must not be less than twenty-four (24) inches.
Insulation must be installed when the backfill depth is less than thirty-six (36) inches. The
finish grade over the trench must be mounded to prevent the formation of a depression
after settling.
Page 3
Lot P, Section Lot 4, Fire Lake Subdivision
June 15, 2007
MINIMUM MATERIAL SPECIFICATIONS:
1. Any septic tank proposed for installation must be constructed by a Municipal approved
septic tank manufacturer.
2. The following pipe materials are approved for use in septic system installations in the
Municipality of Anchorage:
Type of Pipe Perforated Solid
Cast Iron Yes Yes
· ASTM D3034 (PVC) Yes Yes
ASTM FSI0 (HDPE) Yes No
ASTM D2662 (ABS) Yes Yes
Use of a type of pipe other than listed above must be approved by the inspecting engineer.
Insulation shall be at least 2" thick extruded direct burial polystyrene (Dow Chemical
Company Styrofoam HI or equal).
Septic tank inlets and outlets shall be fitted with watertight couplings (Caulder, Femco, or
equal).
A permeable nontoxic silt barrier (Typar 3401, Mirafi 140N, or equal) must be installed
between the final leachfield gravel layer and the native soil backfill.
All leachfield gravel (sewer rock) shall be 0.5"-2.5" screened gravel with less than 3%
passing the//200 sieve.
When sand is being used as a filter material, its gradation specifications must conform to
current M.O.A. or D.E.C. requirements, which ever requirement applies.
Page 4
Lot P, Section Lot 4, Fire Lake Subdivision
June 15, 2007
INSPECTIONS:
Typically there will be a minimum of threc (3) inspections required during the installation of the
wastewater disposal system. These inspections will occur as follows:
The first inspection must be conducted after the excavation of ditches, pits,
trenches, or beds and before the installation of any gravel. A septic tank may be
set in place, but may not be backfilled before this inspection.
The second inspection must be conducted after the placement of the silt barrier,
gravel, distribution lines, standpipes, cleanouts, and insulation, but before the
placement of any other backfill.
The final inspection is to occur upon final grading of the property.
Often there will be more than these 3 inspections required. Especially with the installation of
multiple trenches, sand filters, pressurized distribution systems, etc. Thus, the inspecting engineer
is to be contacted at least 24 hours prior to the start of construction. If necessary, a pre-
construction meeting will take place on-site. The inspecting engineer will not coordinate, direct or
control in any way the contractors activities.
The owner shall contract with the contractor to perform the work outlined in these specifications
and plans and in accordance with the attached M.O.A. permit. There will be no contractual
arrangement existing between the contractor and S & S Engineering. S & S Engineering shall be
the owner's representative and will inspect the work as stated above to document the contractors
activities. Final acceptance of the contractors work rests with the owner and the M.O.A.
S & S Engineering shall have no liability to the owner or to others for acts or omissions of the
contractor or any other persons performing work on this project or the failure of the contractor to
carry out the work in accordance with these construction documents. S & S Engineefing's
inspecting engineer will not be responsible for the construction means, methods, techniques,
sequence, procedures or the safety precautions incident to this project.
CONTRACTOR / INSTALLER