HomeMy WebLinkAboutPARADISE VALLEY BLK 8 LT 1Paradis
Valley
lock 8
Lot I
020-413
-21
()
Municipality of Anchorage
Development Services Department ~ ~:~
Building Safety Division
On-Site Water and Wastewater Program, 4700 Elmore St.
P.O. Box 196650 Anchorage, AK 99519-6650 Page I of
www.ci.anchorage.ak.us (907) 343-7904
ON-SITE WASTEWATER DISPOSAL SYSTEM AND/OR WELL INSPECTION REPORT
Permit Number: O$ff it) I/~ t PIDNumber: ~ -~/~- ~
Name:
~O~ ~r,~ ~ Wastewater System: ~ New ~Upgrade
Address:
Phone; Number of Bedrooms:
~5-- ' ~ ~ ~ ~ D DeepTrench D Shallow Trench ~Bed ~ Mound U Other:
: Soil Rating: Total Depth from original grade:
LEGAL DESCRIPTION ~.~GP~[Ft2 3'¢ ' + ~'~ Ft.
Block: Lot: Subdivision: Depth to pipe bottom from original grade: Gravel depth beneath pipe:
Township: Range: Section: Fill added above original grade: Gravel Length:
Well: ~X P. ~ New ~ Upgrade Gravel width: t O Ft. Number oflines:~ IDistance be~eeniines:~ Ft.
Classification (Private, A, B, C): Total Depth: Cased to: Total absorption area: Pipe Material: ~. ~ ~ ~
Ft. Ft. ~¢ Ft2
Driller: Date Ddlled: Static Water Level: Installer: Date Installed:
Yield: GPM Pump Set at: Ft. Casing Height Above Ground:
.~. TANK
SEPARATION DISTANCES D Septic ~ Holding D S.T.E.P. ~ Other:
T~ Septic Absorption Li~ Holding ~ublic/Private Maaufacturer: Capacity:
Tank Field Station Tank Sewer Line ~ r~ CO -- ~ ~ ~ I 6'~ Gal.
Material: Number of Compa~ments:
Size: Manufacturer:
Foundation ~! ~* ~ ~ "Pump an" level at:in,"Pump off' level at: in. High water alarm at: in,
Pump Make & Model Electd~l Inspections performed by:
Cudain Drain ~ ~ ~
Inspections performed by: ~/¢~ ~c~ ~¢. Dates: 1st ~/~/tO
Development Se~ices Depa~ment Approval ",' ~" "" , ':'>~,-
PERMIT NO: OSP101111
PID NO: 020-413-21
PAGE 2 OF 2
R= 100'
LOT 1, BLOCK 8
WELL
DRIVE
10' x 25' SOIL ABS. BED
on 10' x 30' x 1' SAND FILTER
FIBERGLASS
ADVANTEX TANK
w. AX-20 POD
SWING TIES
FROM: COR. "A"
TO:
TANK M.H."D" 38'
CTR. POD "E' 41.5'
TANK M.H."F" 45'
BED C.O. "G" 53'
BED. M.T."H" 55'
BED C.O. 'T' 57'
BED C.O. "J" 47'
BED M.T. "K" 49.5'
BED C.O. "L" 52'
HOUSE
72' 59'
74' 58'
51' 83'
54' 82'
56' 82'
PLAN VIEW
SCALE: 1" = 30'
FROM
92.7
1500~ALLON
FIBERGLASS
ADVANTEX TANK
10'x 25' SOIL ABS. BED
on 10 x 30'X 1' FILTER SAND
PROFILE VIEW
NOT TO SCALE
INV.
93.8
TEST HOLE #1 /~
BOTTOM 85.3'
WATER @ 87.3' 8/24/10
~/ FINAL GRADE ELEV. 95.5'+
1'
COVER RIGID INSULATION
INV.93.0'
2.5 5' '",-...~ ~,~
I~ 10' ~l ~
"~----~ELEV. 92.5'
~ELEV 91.5'
LOT 1, BLOCK 8, PARADISE VALLEY SID
SEPTIC SYSTEM UPGRADE
AS-BUILT INSPECTION REPORT
FLATTOP TECHNICAL SERVICES . SCALE: AS NOTED
14530 ECHO CANYON ROAD I DRAVVN BY TFM
ANCHORAGE, ALASKA 99516 [ SEPTEMBER, 2010
08/31/2~10 12:42 $6867?0
FROM:ED'S ELECTRIC INC
APLUS
8TB 45-90 TO:SGSGT?O
Inspection Report
Municipality of Anchorage, Building Safety Division
4700 Elmore-Road
INFO & HELP (907) 343.~211
INSPECqqON; VOICE (907) 345-8300 - FAX (907)249-7777 ' www,munl.org
Name eci$ electric
Company
Addres~ 5925 AUSTRIA DR
Grid SW3538
Subdivision PARADISE VALLEY
Work Demcriptlon install ~eotic llft st~ttion
PAGE
P.1
Permit ~ 10-8707
Inspection Date 31 .Aug-2010 AM
Phone 272.=591
LOT 1 BI( B TR n/a
Insp. performed/prep~ld 0 / 0
permit Teehrflclan MORISA, MARIAMENE G.
Comments o~ Directions call to mee~
inspection Type Electrical:Retro Electrical Comments (for inspector use only)
TEST HOLE
FLATTOP TECHNICAL SERVICES
14530 ECHO CANYON ROAD
ANCHORAGE, ALASKA 99516
SOILS LOG -- PERCOLATION TEST
LEGAL DESCRIPTION: Lot_l..Block8.Paradise Valley S/D . _ _
DATE PERFORMED: August~ 6. 2010
PERFORMED FOR: Mark Wyrick
DEPTH --
(feet)
1
Pt and fill
Pt. (Original ground)
GM Silty gravel
GP Sandy gravel
GM
Silty gravel
Increasingly dense w. depth
Angular cobbles near bottom
SLOPE
B.H. (Bedrock)
11
12
13
14
15
16
17
18-
SITE PLAN -
BURIAI~' .........................
AREA
Depth to Groundwater Date
_ Wa_ter @ 7.7_5' _ ..... ~__/_2_0_!!0_
~ . I ~ _. Clock Net Time ! Percometer Net Drop
L)a[e ~eao ng ! I .
i Ti_me _ _(m_,n_utes) ....... ', Reading
8/16 12" Presoak i J 27 3/4
PERCOLATION RATE_. 7 (minutes/inch) PERC HOLE DIAMETER 6, _
TEST RUN BETWEEN . 4.5___ FT AND ...... ~.0 FT
COMMENTS: Tes.t_ _h_o_!_e_an~ perc test con_d_u_ctp.djn_ prder to assess ~_a_sjbJ!ityp~.._rn_odifyingdesign to~d_y~n_ced treatm_ent Syst
PERFORMED BY FLATTOP TECHNICAL SERVICES. I ~'_~.~ ~ CERTIFY THAT THIS TEST WAS PERFORMED IN
ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: ._ ~.~':;~'~'-/_l~ .......
On-Site Wastewater Disposal 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: OSP101111
Tax Code Number: 02041321000
Work Type: Septic Upgrade
Permit Effective Dates: July 30, 2010 to July 30, 2011
Design Engineer: FLATTOP TECHNICAL SERVICES
Subdivision: PARADISE VALLEY
Site Legal Address: PARADISE VALLEY BLK 6 LT 1 G:3538
Owner/Address: WYRICK MARK R
2925 AUSTRIA DRIVE ANCHORAGE AK 995166018
Site Mailing Address: 5925 AUSTRIA DR, Anchorage
Lot Size in Sq Ft: 17147
Total Bedrooms: 4
This permit is for the construction of:
Y Disposal Field Y Septic Tank N Holding Tank N Privy N 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 any part of the old field is with 78' of the well on Lot 4 Block 7, within the well radius of of Lot 1
Block 8, in the easement or outside the property boundry; the old sewer rock within 2' of the new
field will be removed and filled with a silty soil.
"Confirm bedrock depth prior to construction. Please submit stamped and signed results with the
As-built Inspection Report. If the results require a design change, construction of the system will
stop pending On-Site review and approval."
Date:
[,ate:
Development 8eP~io~s Dep~r~me,. ,~-
Building Safety Division
On-Site Water and Wastewater Program
4700 Elmore Road
P.O. Box 196650
Anchorage, Alaska 99507
vww¢.muni.org/onsite
(907) 343-7904
ON-SITE SEWER/WELL PERMIT APPLICATION
'wo~:-w,* ~ o-~'~ot~t.~ FOR A SINGLE FAMILY DWELLING
¢~.~'v~FJ~'. 0~r¢ i ¢ t 1 ~ ~
Parcell.D. O~¢ -- ~1 ~ -- ~, I
Property owner(s) f'""'t ¢k¢'/'~ ~L,¢~'.~ ~,'[ ~ Day phone
Mailing address ~-'¢ 2.¢ /~r..~- /-,-, ct /~ ,"f'~,E Zip Code
Site address ,.¢ ¢~ ~ ¢_ Zip Code
Legal description (Sub'd., Block & Lot) P'~2.¢"~ ¢4¢'1~'¢' ~"¢~ ~'[ 4'~ /~ ~.
Legal description (Township, Range & Section)
Lot Size Sq. Ft.
Number of Bedrooms ~.~
-,3,,¢p' .- ¢
Li
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 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: ~"' .~' t'".~ ~ Waiver Fees:
Date of Payment: '7 [*~'/' lg2 Date of Payment:
Receipt Number: 0' --~, j ? ~ ~_~ Receipt Number:
(Rev. 11/05)
Municipality of Anchorage
ONSITE WATER & WASTEWATER PROGRAM
CHANGE ORDER
PERMIT # t~..~ I° jO I' Il !
TRACT BLOCK~ LOT
CONTACT PEi:LE;ON -'F'~ ~L/~
PHONE ~ t/g-- 3.¢ 3" FAX ~-~,~e
On-Site ~1{~ Issued Time
APPROVED, ,,TOTALHOURS
HOURLY RATE
TOTAL TO BE PAZD
OAT£PmD
h
RECE_rpT #
FLATTOP TECHNICAL SERVICES
CIVIL & ENVIRONMENTAL ENGINEERING * ENERGY CONSERVATION & ANALYSIS
TED MOORE, P.E. 14530 ECHO CANYON ROAD
PH./FAX: (907)345-1355 ANCHORAGE, AK 99516
E-Mail: tgmoore~gci.net July 7, 2010
M.O.A. DSD
P.O. Box 19-6650
Anchorage, AK 99519
Dear Sirs:
The purpose of this letter is to provide the required design narrative in support of our application for a
permit to upgrade the wastewater disposal system serving the 3-bedroom residence on Lot 1, Block 8,
Paradise Valley S/D. A site plan, design drawings and specifications are enclosed for your review. We
are also requesting a waiver allowing the absorption bed to be located as close as 78 feet from the
private well on Lot 4, Block 7, Paradise Valley, a lot line waiver to 1.0 foot, and for the bed to be 24 feet
wide vs. the current standard of 15 feet wide. In support of the waiver request we are also submitting
the following engineering analysis as well as the relevant well driller's log and water sample test results.
As I discussed with Jay Crewdson and Debbie Wockenfuss a couple of weeks ago, the existing soil
absorption bed has become biomatted up after 25 years of use, causing occasional daylighting. There
does not appear to be any suitable replacement site in a different location, so we propose to reconstruct
the existing bed to the same external dimensions in the same location as the original based on the
original soils test data. In an effort to enhance future longevity of the system, we propose to install a 12-
inch thick layer of clean filter sand under the sewer gravel in the reconstructed bed.
Unfortunately for the homeowner, a waiver will also be needed in order to allow this reconstruction to
take place. The original bed was permitted and constructed in 1984 without the need for a waiver;
however in 1985 a private well was drilled across the street on Lot 4, Block 7 at a distance of 78 feet
from the apparent edge of the soil absorption bed. Despite the fact that standpipes are present in the bed,
the engineer, well driller, and several subsequent engineers conducting HAA certifications, all were
somehow unaware of the encroachment.
Due to the fact that the soil absorption bed predates the well, there exists some sort of informal
"grandfather rights" to continue use of the site for a reconstructed system, provided there is no evidence
of contamination of the well by the soil absorption system. According to the homeowner, the area
southeast of the present site, which is more than 100 feet from all wells, was used as a stump burial site
during construction of the house, wherein the shallow strum of native soils overlying bedrock were
removed, with the area being subsequently filled with imported soil and regraded. The present
absorption bed site was determined in 1984 to provide suitable soils for a subsurface wastewater
disposal system; however it appears to be the only feasible site - numerous adjoining and nearby lots
remain vacant to this day due to difficult or unsuitable soil conditions.
In support of this waiver request I collected new water samples from the well on Lot 4, Block 7 and also
the well on the subject Lot 1, Block 8 to test for nitrate nitrogen. The water sample lab test results are
attached. The sample from the well on Lot 4, Block 7 showed 3.00 mg/1 of nitrate nitrogen, which is
typical for many similar hillside areas with shallow bedrock, although that reading is higher than
previous readings of 0.94 mg/1 and 0.75 mg/1 that had been reported for that well in 1992 and 1995.
The water test result for the sample from the subject residence on Lot 1, Block 8 (which is located just
over 100 feet from the absorption bed) showed a nitrate nitrogen level of 6.89 mg/1. This level, while
still significantly below the accepted standard of 10 mg/1) is a little more than double the nitrate
concentration found in the Lot 4, Block 7 well at the same time. In checking nitrate data from your files
on other nearby lots I found nitrate concentrations of 5.75 and 5.83 mg/1 for the well on Lot 19, Block 8
reported in 2007.
Based on years of experience looking at nitrate concentrations in Anchorage Hillside wells, it can be
noted that nitrate concentrations often demonstrate significant variation depending on time of year and
sampling protocol. The nitrate concentration of 3.00 mg/1 reported for the well on Lot 4, Block 7 is an
entirely normal-seeming reading giving no basis for concern that the well is being contaminated by the
soil absorption bed on Lot 1, Block 8.
According to the driller's log for the well on Lot 4, Block 7 the well was completed on 10/27/1985 and
has a total depth of 210 feet, all but the top ten feet of which is drilled through bedrock. Damp bedrock
with limited water production was encountered between 50 feet and 100 feet, with more water
production encountered between 202 feet and 203 feet. The static water level in the well is reported as
being at 12 feet, which indicates that the source aquifer is confined by an impermeable overlying
stratum. This fact alone virtually guarantees that there is no possibility of surface contamination making
its way down into the drinking water aquifer.
For the purpose of waiver analysis point assigranent, it seems reasonable to assign the water table depth
as 50 feet - the depth at which water was first encountered below the upper impermeable confining
stratum. For soil sorption and permeability, the confining bedrock can reasonably be assigned the
highest point values since water cannot percolate downward through it. Because the well is located at a
slightly higher elevation than the soil absorption bed the water table gradient can be conservatively
assigned 0%.
Based on the above rationale, the following is a breakdown of how waiver analysis points could be
assigned using DEC's 1985 "Separation Distance Waiver Guidelines for'SCRO".
Category: Points:
Water table (50' - 5' depth of bottom of bed = 45')
Soil sorption (bedrock equivalent in permeability to clay)
Permeability (solid bedrock with permeability >50 min./inch)
Water table gradient (assmne 0%)
Horizontal separation (minimum 78')
5.1
6.0
3.0
2.9
2.1
Total points 19.1
Based on this point assignment it appears that the requested waiver can be safely granted, without
concern as to potential contamination of the LAB7 well by the soil absorption bed on L1BS.
The 1 foot to lot line waiver request is necessary to allow the reconstructed system to be installed in the
same location as the original. Because the lot line in question fronts on a public right-of-way for Austria
Drive there will be~f'o adverse impact on adjoining lot owners in granting the requested waiver.
The waiver of the normal 15-foot maximum bed width to 24 feet is necessary in order to allow the bed
to be reconstructed to its original dimensions. The placement of the proposed 12 inches of coarse, clean
filter sand under the sewer gravel should greatly enhance the ability of soil oxygen to migrate under the
bed and facility biologic decomposition of the wastewater.
The design of the original soil absorption bed was based on a measured perc rate of 11.5 minutes per
inch, which corresponded to a soil application rate of 170 square feet per bedroom. Using a bed size
adjustment factor of 1.5, the soil absorption bed for 3-bedroom residence required a minimum basal area
of(3 x 170 x 1.5) = 765 square feet. The actual absorption bed had a reported basal area of 24 feet by
41 feet -- 984 square feet. We are proposing to reconstruct the bed to the same basal dimensions, plus
include a 12" thick layer of filter sand under the sewer gravel after removing 6 to 12 inches of the
clogged native soil under the existing bed.
Given the foregoing waiver engineering analysis, the proposed upgrade will have no significant impact
on present or future water supply and wastewater disposal systems serving adjacent properties, nor will
it have any significant impact on reserved space-surface and subsurface, or on drainage.
Please give me a call at 345-1355 if you have any questions on this submittal.
Sincerely,
Ted Moore, P.E.
SEPTIC ,-"
AREA /'
WELt
LOT 4
BLOCK 7
J
LOT 3 "
(VACANT)
SEPTIC f / ~ %',.
//__ ,OUSE / "",,,
......... ...~ LOT 6 ~ DRIVE
LOT 5 BLOCK 7 .:' "-\,, BLOCK 7 ~ LOT 7
I .-"";~: / ~ WELL~ ~ ... I~
LOT 1, BLOOK8 .... ~
ABANDON EXISTING
1000-GALLON SEPTIC
TANK AND SOIL ABS. BED
/ 10%
/
/
?
~ /
T.H.
#1
DRIVE
10%
/
CURTAIN
DRAIN
LOT 20
(VACANT)
ROADSIDE DITCH
w. FLOWING WATER
HOUSE
'STUMP
BURIAL
'"'"""';Z~'
LOT 19 '~,~ .........
HOUSE
/
i
LOT 2, BLOCK 8 /
(VACANT)
/
.,'
INSTALL 1500-GALLON
ADVANTE)
TANK AND AX-20 POD
CONSTRUCT 10' x 25'
SOIL ABSORPTION BED
ON 10' x 30' x 1' THICK
"FILTER SAND BASE
LOT 1, BLOCK 8, PARADISE VALLEY
SEPTIC SYSTEM UPGRADE
SITE PLAN
FLATTOP TECHNICAL SERVICES ]I INCH = 50 FEET
14530 ECHO CANYON ROAD I: DRAWN BY TFM
ANCHORAGE, ALAS_KA 995~16~ REV. AUG.,
NOTE: THIS IS NOT A SURVEYED PLAT.
ALL LOCATIONS SHOWN ARE APPROXIMATE.
,~00-G^.LO. / O.E.CO//AX-20'~R~*ME"T POD
FIBERGLASS
~ / ~ /~,'WASTEUNE
M.H. / t ]1 I ~M.H.
10'-~DE x 25'-LON~ ~ "A"
s~.G~VE~ ~ II /
10'-WIDE x 30'-LONG x 1' THICK
4" DIA. F-810 DISTRIBUTION *TE*LS
PLAN VIEW
SCALE 1" = 10'
c.o.~..)-~
2, sol, COVER~---.....
FILTER FABRIC
2" RIGID INSU~TION
12" WASHED SE~R G~VEL
12" ISF FILTER SAND
4" DIA. F-810 DIST. ~TE~LS
BOSOM OF ~CAVATION
CROSS-SECTION "A - A"
SCALE: 1" = 5'
LOT 1, BLOCK 8, PARADISE VALLEY S/D
SEPTIC SYSTEM UPGRADE
REVISED PLAN AND CROSS-SECTION
FLATTOP TECHNICAL SERVICES SCALE: AS SHOWN
14530 ECHO CANYON ROAD DRAWN BY: TFM
ANCHORAGE, AK. 99516 REV. AUG., 2010
I
TEST HOLE
FLATTOP TECHNICAL SERVICES
14530 ECHO CANYON ROAD
ANCHORAGE, ALASKA 99516
SOILS LOG -- PERCOLATION TEST
LEGAL DESCRIPTION: ._Lot_l,. Block 8. Paradise Valley. S/D .....
DATE PERFORMED: August_~6,.2010
PERFORMED FOR: Mark~rick ................
DEPTH --
(feet)
Pt and fill
Pt. (Original ground)
GM Silty gravel
GP Sandy gravel
GM Silty gravel
Increasingly dense w. depth
Angular cobbles near bottom
SLOPE
~oo/~
B.H. (Bedrock)
11
12¸
13
15-
16 j
SITE PLAN
BURI~J" .........................
AREA
Depth to Groundwater Date
Water @ 7 75' 8/20/10
~'-; ..............
Water @ 8,5 i 8/24/10
Clock I Net Time Percometer Net Drop
Date Reading ]
Time I (minutes) Reading (inches)
..... 12"_resoak
: Add water & start 1:50
2:05:3_0
........ Add w~a_t_ e r_ __ '
#2 2:20:30 [ 15 i 20 15/16 2 7/16
PERCOLATION RATE_ .-( _ (minutes/inch) PERC HOLE DIAMETER 6"
TEST RUN BETVVEEN 4;5 .... FTAND. __5.0 _ FT
COMMENTS: Te~t hole andperc te~t..conducte~d in older to a_sses_s fea~
PERFORMED BY FLATTOP TECHNICAL SERVICES. I '~ ~ ...... CERTIFY THAT THIS TEST WAS PERFORMED IN
ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: ~V~ ! ""~' ,/ /~_ .......
q~lattop TechnicalSem, qces
14530 ~.clto Canyon POad, AncboraOe, AK 99516
Phone (907) 345-1355
Lot 1, Block 8, Paradise Valley S/D
5925 Austria Drive
Wastewater disposal system upgrade
Specifications
1.0 General:
1.1 The scope of the project consists of abandoning an existing 1000-gallon septic tank and
installing a new 1000-gallon septic tank that discharges effluent into a totally reconstructed 24-foot wide
by 41-foot long soil absorption bed containing 12 inches of ISF filter sand and 6 inches of washed sewer
gravel beneath the horizontal distribution pipe.
1.2 Construction shall be as depicted on the approved site plan and design drawings. Minor
deviations from these drawings may be allowed or required by the engineer conducting the inspections.
All construction procedures and material specifications shall conform to Municipal and State
requirements. All separation distances shall be in conformance with Municipal requirements, unless
specifically waived.
1.3 The contractor shall be responsible to obtain any necessary utility locates, and to work
around any buried utilities.
1.4 Unless agreed otherwise, the contractor shall be responsible for any tree clearing and
grubbing necessary to complete the project.
1.5 The contractor shall provide adequate cover material and rough grading over all system
components to ensure that proper drainage is achieved after settlement and that there are no residual
depressions. Insofar as possible the contractor shall minimize damage to trees and existing lawn areas.
1.6 Unless specifically agreed otherwise, the homeowner shall be responsible for finish grading
after the soil is compacted, and seeding all areas disturbed by the construction.
1.7 Prior to the start of construction the contractor, or homeowner, shall arrange to have a
professional land surveyor place and label survey lath at the westernmost property corner and at
approximately 20-foot intervals along the adjoining property lines for a distance of 60 feet from
the westernmost property corner. The surveyor shah also place and label lath at approximately
20 foot intervals to delineate a 75-foot radius from the well on Lot 4, Block 7 and 100 feet from the
well on Lot 1, Block 8 in the vicinity of the existing soil absorption bed and septic tank. If the
surveyor has any questions regarding this requirement he should contact Ted Moore at 345-1355.
2.0 Septic Tank:
2.1 The existing 1000-gallon, steel septic tank shall be properly decommissioned per code.
2.2 A new 1000-gallon Municipally approved septic tank shall be installed in the vicinity of the
original septic tank outside the 100-foot radius from all wells.
2.3 All pipe connections to the tanks shall be equipped with waterproof mechanical couplings.
The waste line from the residence to the septic tank shall have a minimum slope of 1/4'" per foot.
3.0 Soil absorption system:
3.1 The existing soil absorption bed shah be thoroughly pumped prior to the start of
reconstruction, which shall include, if necessary, excavating a shallow pit below the level of the
bottom of the sewer gravel to collect the ponded effluent for efficient pumping. After the existing
soil absorption bed has been pumped and dried out, it shall be fully excavated to remove and
stockpile the existing cover material, sewer gravel and top 6-12 inches of contaminated native soil
underlying the bed.
3.2 The exact configuration of the boundaries of the existing bed shown on the site plan is
hypothetical based on the monitor tube location. The excavation for the new bed shah follow the
existing boundaries insofar as possible, subject to not encroaching into the 10-foot utility easement
along the south property boundary or closer than 78 feet from the well on Lot 4, Block 7 or 100
feet from the well on Lot 1, Block 8. In the event that the boundaries of the existing bed do
encroach on one or more of these features, the boundaries of the new excavation shall be adjusted
to achieve the same basal area that does not encroach.
3.3 The maximum elevation of the bottom of the soil absorption bed shah be determined
after the new septic tank has been installed as shallow as possible, such as to allow gravity flow
from the tank into the distribution pipe network that is underlain by 6 inches of washed sewer
gravel and 12 inches of ISF filter sand.
3.4 The bottom of the excavation need not be exactly level, however all contaminated native soil
under the existing bed shall be removed and stockpiled for use in backfilling the reconstructed bed.
3.5 A minimum of 1.0 feet of ISF filter sand (with less than 2% passing the #100 sieve and 1%
passing the #200 sieve) shall be placed in the excavation and compacted by foot to create a level surface
approximately 0.7 feet below the elevation of the invert of the new septic tank outlet.
3.6 Next, a total of 1.0 feet of washed sewer gravel shall be placed on top of the sand with the
perforated distribution pipes laid level such that the pipe inverts are no less than 0.5 feet above the
bottom of the sewer gravel.
3.7 The distribution pipes shall be 4" diameter ASTM F-810 or D-3034 perforated pipe. The
distribution laterals shall be spaced 5-feet apart and fed from a central manifold using cross fittings.
Monitor tubes and cleanouts shall be of 4" diameter and installed in the locations shown on the design
drawings. The portion of the monitor tube extending through the sewer gravel shall be perforated.
3.8 Approved filter fabric shall be placed over the entire top surface of the sewer gravel, prior to
backfill with a minimum of 3 feet of soil cover material.
3.9 The backfill shall be mounded a minimum of 6 inches above original ground level. Fill
slopes shall be no steeper than 3:1.
3.10 Unless specifically agreed otherwise the homeowner shall be responsible for arranging to
have the site finish graded after the backfill material has stabilized, and for placement of adequate seed
to promote rapid revegetation.
4.0 Inspections:
4.1 A total of 5 engineering inspections will be required during the course of the project: (1)
initial stakeout with the contractor to establish the location of the system and to discuss the plans,
specifications and construction procedures, (2) after the native material has been excavated to expose the
infiltrative surface to ensure that it is level and at the right elevation, and conforms with the soil test
information, (3) after the compacted sand filter material has been placed, (4) after the sewer gravel is in
place and the distribution pipes have been laid and connected up to the septic tank, but prior to
placement of filter fabric, and (5) after rough backfill and grading is complete. The septic tank
installation inspection shall be in conjunction with one of the other listed inspections.
4.2 The installer shall coordinate the timing of the inspections with the engineer sufficiently far
in advance to ensure the availability of the engineer.
ADVANCED WASTEWATER TREATMENT SYSTEM MAINTENANCE AND
REPAIR AGREEMENT
MEMORANDUM OF UNDERSTANDING
BETWEEN MUNICIPALITY OF ANCHORAGE
AND
THIS MEMORANDUM OF UNDERSTANDING made and entered into as of this
~ ~ Day of /~ 6~i~? g '-[ of 20/0, by and between
herein the "OWNER," and the Municipality of Anchorage, herein the
"MUNICIPALITY." In consideration of the mutual covenants contained herein, the
parties to this Memorandum of Understanding agree as follows:
1. ADVANCED WASTEWATER TREATMENT SYSTEMS. Municipality
grants permission to Owner to utilize and operate an Advanced Wastewater
Treatment System (AWWTS), described as fi-) & I?cl O. "/LC '~, located
Definitions.
, Anchorage, Alaska.
A. Alteration. Any change to the design or function of an AWWTS that
Includes the installation or removal of any parts, components or pieces not
included in the original construction permit and design. Prior to
performing any alterations to an AWWTS the owner must obtain a
Wastewater Disposal System Construction Permit from the Municipality
pursuant to Anchorage Municipal Code (hereinafter, "AMC") 15.65.
B. Certificate of On-Site Systems Approval. An approval by the
Municipality of existing water and wastewater disposal systems given at
the time of property sale and title transfer in accordance with AMC 15.65.
These approvals certify that the systems are adequate for the homes that
they support and meet the codes that were in place at the time of system
construction.
C. Damage. Any man-made or natural change in a system that would i~zhibit
the system from performing as designed.
D. Maintenance and Repair. The scheduled and as needed replacement of
existing parts, components and pieces of an AWWTS that were included in
the original design which would allow the AWWTS to continue to
perform as designed.
E. Permit (Construction) An On-Site Wastewater Disposal System
Construction Permit as defined by AMC 15.65.
F. Permit (Operating) An Advanced Wastewater Treatment System
Operating Permit. An annual permit, issued by the Municipality, that
allows the Owner to operate an AWWTS, upon meeting all the
requirements of this agreement, the conditions of Operating Permit, the
requirements of the On-Site Wastewater System Construction Permit and
all relevant provisions of AMC 15.65
3. Fee. Owner shall pay to Municipality an annual fee of ~ /'~/~ C.~
($ C').00), payable on or before the issuance of the operating permit and annually
thereafter. The annual fee is due on or before the anniversary date of the approval by the
Municipality of installed system.
4. Term. The term of this Memorandum of Understanding shall be for the life of the
AWWTS.
The term begins on the date of approval by the Municipality of the installed system and
shall continue while the AWWTS system is in use or operational or until the property is
sold or title is transfen'ed by owner and a new certificate of On-Site approval is issued to
the new owner or transferee of the property.
5. Alterations~ Installation and Removal of Additional Equipment. Owner agrees
not to make any alterations, removal of parts or additions to the AWWTS without a
Construction Permit from the Municipality.
6. Maintenance and Repairs.
A. Throughout the term of this Memorandum of Understanding, the Owner shall
maintain AWWTS in good repair. In addition, it shall be the responsibility of the
Owner during the term of this Memorandum of Understanding, and any extensions or
renewals thereof, at the owner's sole expense, to pay for any and all: (1) repair(s), (2)
maintenance, (3) adjustment(s), (4) replacement costs, and (5) inspection costs.
Further, Owner agrees to comply will all applicable ordinance, laws, regulations,
rules and orders for the AWWTS.
B. Owner agrees to provide the Municipality a written schedule of routine
maintenance and repairs which have been performed on the system pursuant to the
terms and conditions contained in the Owner's AWWTS Operating Permit. This
schedule shall be submitted to the Municipality annually upon the renewal of the
permit. The schedule of maintenance and repair contained in the Owner's AWWTS
Operating Permit is: /~. _//l .t/t c,~t.~' /
C. Owner acknowledges that the fine schedule for failing to maintain and repair an
AWWTS are codified in AMC 14.60.
D. Owner agrees that only maintenance, repair perso~mel certified by the
Municipality will inspect and make any necessary maintenance, repairs or permitted
alterations to the system.
E. Owner agrees to grant the Municipality reasonable access to test and inspect the
AWWTS upon 24 hours written notice.
F. Owner agrees that any sale or transfer of title of the property will not occur
without a new Certificate of On-Site Systems Approval.
G. Owner agrees that the relevant provisions of the standard specification guidebook
for AWWTS is the governing professional guidelines for the construction,
maintenance and repair of the Owner's AWWTS.
7. Nonwaiver. The failure of either party at any time to enforce a provision of this
Memorandum of Understanding shall in no way constitute a waiver of the provisions,
nor in any way effect the validity of the Memorandum of Understanding or any part
hereof, or the right of such party thereafter to enforce each and every provision
hereof.
8. Amendment.
A. This Memorandum of Understanding shall only be amended, modified or changed
by a writing, executed by authorized representatives of the parties, with the same
formality of this Memorandum of Understanding was executed and such writing shall
be attached to this Memorandum of Understanding as an amendment.
B. For the purposes of any amendment modification or change to the terms and
conditions of this contract, the only authorized representatives of the parties are:
Anchorage: Purchasing Officer
C. Any attempt to amend, modify, or change this contract by either an
unauthorized representative or unauthorized means shall be void.
9. Jurisdiction: Choice of Law. Any civil action arising from this Memorandum of
Understanding shall be brought in the Superior Court for the Third Judicial District of the
State of Alaska at Anchorage. The laws of the State of Alaska shall govern the rights and
obligations of the parties under this Memorandum of Understanding.
10. SeverabiliW. Any provisions of this Memorandum of Understanding decreed
invalid by a court of competent jurisdiction shall not invalidate the remaining provisions
of the Memorandum of Understanding.
OWNER:
'~ By:
Title:
Date: ~) ~ 2 } ~- ]~:~ Date:
STATE OF ALASKA )
) SS.
THIRD JUDICIAL DISTRICT )
MUNICIPALITY:
The foregoing instrument was acknowledged before me this cX-~day of
201o.,by ,/77~r,~ ~',,.'y/,,/c_ /~ ,the
NOTARY PUBLIC FOR ALASKA --~ 'NOTAR¥
My Commission expires: Z~,]L c ~-~,' t ~: ~.\ PUBLIC
ti#/~~Itl