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Home My WebLink AboutMOUNTAIN VALLEY ESTATES BLK 1 LT 11 Permit Number:OSP261207 Tax Code Number:05064124000 Work Type:WellSeptic Upgrade Effective Date: Design Engineer: Site Legal Address:MOUNTAIN VALLEY ESTATES BLK 1 LT 11 G:0658 Owner:PURVIS MAXWELL & SYDNEY Site Mailing Address:4763 BIRDSONG DR, Eagle River Lot Size in Sq Ft:71147 Total Bedrooms:3 This permit is for the construction of: Disposal Field Septic Tank Holding Tank Privy Non-Public Water Well Water Storage All construction shall 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 shall notify the Development Services Department per AMC 15.65. Coodinate with On-Site staff regarding preferred method. 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather shall be either: a. Opened and Closed on the same day, or b. Covered, sealed, and heated to prevent freezing 7/21/2026 7/21/2027 FIRST WATER CONSULTING Expiration Date: ¨þ ¨¨þ ¨ Issued To: Issued By: Date: Date: 7/21/2026 7/21/2026 FIRST WATER CONSULTING Curtis Townsend MUNICIPALITY OF ANCHORAGE On-Site Water & Wastewater Program PO Box 196650 4700 Elmore Road Anchorage, Alaska 99519-6650 Phone: (907) 343-7904 Fax: (907) 343-7997 http://www.muni.org/onsite On-Site Water & Wastewater System Permit MUNICIPALITY OF ANCHORAGE Development Services Department Phone: 907-343-7904 On-Site Water & Wastewater Section May 2025 ON-SITE SEPTIC/WELL PERMIT APPLICATION Parcel I.D. _____________________ Property owner(s) ______________________________________ Day phone Mailing address Site address Legal description Number of Bedrooms ________ Engineering Firm _______________________________________________________________ Building Permit Number ___________________________ Not Applicable APPLICATION IS FOR: ( all that apply) Disposal Field Septic Tank Holding Tank Privy Well Water Storage APPLICATION IS AN: Initial Upgrade Renewal THIS APPLICATION INCLUDES A WAIVER REQUEST FOR: ________________________________________________________ Distance: ______ Permit/Rush Fees: Waiver Fees: Date of Payment: Date of Payment: Permit No. Waiver No. 13030 Sues Way, Anchorage, AK 99516 907-350-9566 / FirstWaterAK@gmail.com ! !! July 14, 2026 Municipality of Anchorage On-Site Water & Wastewater Program 4700 Elmore Road Anchorage, AK 99507 RE: WELL & SEPTIC TANK UPGRADE PERMIT LEGAL: MOUNTAIN VALLEY ESTATES BLOCK 1, LOT 11 The owner has requested that we obtain a well and septic permit to upgrade the existing aged steel septic tank on the above referenced lot and also drill a new well. A foundation and a septic system were installed in 1998 with no well drilled. We propose to install a 1000-gallon deep- burial HDPE tank per the attached design to serve the existing 3 -bedroom residence along with a new well. Groundwater was noted in the MOA on-site file at 10’ and if shallow groundwater is encountered during installation an epoxy coated steel septic tank, buoyancy issues requiring tank anchoring or other action may be required. The lot and area are served by private water and any encroaching wells, easements, … must be staked prior to construction. The design will not impact any of the neighboring properties. Please contact us if you have any questions. Sincerely, Curtis Huffman, P.E. Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP261207, Curtis Townsend, 07/21/26 B I R D S O N G D R I V E FIRST WATER CONSULTING MOUNTAIN VALLEY ESTATES B1, LOT 11 DESIGN DETAILS: Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP261207, Curtis Townsend, 07/21/26 SMARD & ASSOCIATES LAND SURVEYING 694-0829 SCALE - OF A't DATE GRID: Duarl'a e Sawa d FS-* A1 DRAWN: p'' L '~L Municipality of Anchorage Page / of DEPARTMENT OF HEALTH AND HUMAN SERVICES ENVIRONMENTAL SERVICES DIVISION P.O. Box 196650 · Anchorage, Alaska 99519-6650 · Telephone: 343-4744 On-Site Wastewater Disposal System and/or Well Inspection Report Permit Number: 2/b¢ '¢~;~ / ~'5- PID Number: ~'¢'~:~"~"/~ ~ /./~,¢/~t ~- ...~ h"y ////~,-~ Wastewater System: tEl'New [] Upgrade Address: #o, ~,~ 7_7_.c'~, ,~/,~ .4/~ 9'?'¢~' ABSORPTION FIELD -- ' Phone:~l,~,,~_ I'~,~ -- ~¢¢ ~'~ ~ No. of ~.drooms: /~/'Oeep Trench [] Shallow 'French [] Bed [] Mound [] Other Total Depth Irom original grade: LEGAL DESCRIPTION So,lRating: /, ,~ GPD/Sq. Ft. Lot: _~ Z BIock:.~,~o ¢*,. '¢'~.. '¢ ~Subdivis'on:~//~ ~]~ Oeplh~.to pipeobotlom from ong,nal grade: Ft. Gravel depth~¢~beneath/ pipe FL ~ Gravel width: Number of lines: Distance belween linss: WELL: ~r,//~ D New D U~d¢/ ~ ~ / I ~ Classd~cahon (Private. A,8,C): ~D~lh: Cased To: Total absorphon area: Pipe material: Ordler: ~/~ Date Ordled: Slahc Waler Level: Installer: ~ate installed: Yield: ./ ...... Pump Set al: Cas,ng Height Above Ground: TANK SEPARATION DISTANCES ~Septic Q Holding ~ S.T.E.P. From Tank F,eld Station Tank S .... L .... ~r _~ ~ ~ Ma~edal: Number o~mpanmems: wen 5T~NL s~ ~ ,~, LIFT STATION Water ~I~~ Line FounOation ~/ ~ ~ / ~ '~um~ oa" Iovel at r' level at: water alarm CurtainDrain ~ ~ . ~ Pum~,~l Electrical Inspecbons performed by: Remarks: ~T~ /~ /~ ~/~ ~ BENCH MARK Location an~ Description: ENGINEER'S SEAl. Inspections performed by: ~A 4'~, ~.~,~e~,~. Dates: 1st ~-/~'¢~ 1!~9~..,.t~-.,---.""'""" ~ ~ Department of Healed ~man~Services approval Reviewed and approved by: ~/, .~ ~~ Date: ~-/~-~' 72-013 (Rev 9/911 MOA 25 of 2 Permit No. SW980185 Page 2 Municipoli[y of Anchorage DEPARTMENT OF HEALTH AND HUMAN SERVICES ENVIRONMENTAL SERVICES DIVISION P.O. Box 196650 · Anchoroge, Aloskm 99519 6650 Te~phone: 545 4744 On-Site Wastewater Disposal System and/or Well Inspection Report Legol Description: MOUNTAIN VALLEY ESTATES LOT 11 BLK 1 PIE) No.: 05064124 Swing Ties A-C = 200.2' B-C = 125.5' A-D = 172.9' B-D = 155.5' ELEVATIONS (NOT TO SCALE) Rebar, NW Lot CDr ASSUMED ELEV = 150.95' GROUND LEVEL AT: ~83.6 77.9 - TEST HOLE - MONITOR TUBE - SEWER CLEANOUT <F - WELL LEACHFIELD EASEMENT Scale 1"=60' 9/21/98 ENGINEER'S SEAL 0~- A/'~, ~,',,%-.. ......... .-- "' -ti '~.." 4 9., ~ '...~y~ Fm · . ......... :...:~.~ ~ ~'.LOUIS A. BUTERA.'~ ~¢&. ............ ..:'~ PAGE 1 OF MUNICIP~LITY OF ~%NCHORAGE DEPARTMENT OF HEALTH 3kND HUN2kN SERVICES P.O. BOX 196650, 825 "L" STREET, ROOM 502 ANCHORAGE, ALASKA 99519-6650 ON-SITE WELL ialfD WASTEWATER DISPOSAL SYSTEM PERMIT PERMIT NUMBER:SW980185 DESIGN ENGINEER:EAGLE RI~ER ENGINEERING SERVICES OWNER NAME:ALLAN JERRY A & LINDA L OWNER A DDRESS:P.O.BOX 2256 PALMER ALASKA 99645 DATE ISSUED: 6/17/98 EXPIRATION DATE: 6/17/99 Pi~RCEL ID:05064124 LEGAL DESCRIPTION: MOUNTAIN VALLEY ESTATES BLK 1 LT 11 LOT SIZE: 71147 (SQ. FT.) ~ER OF BEDROOMS: 3 THIS PERMIT: 3 THIS PERMIT IS FOR THE CONSTRUCTION OF: DISPOSAL FIELD /SEPTIC T/kNK / WELL SYSTEM ALL CONSTRUCTION MUST BE IN ACCORD~NCE WITH: 1. THE ATTACHED APPROVED DESIGN. 2. ALL REQUIREMENTS SPECIFIED IN ~NCHORAGE MLrNICIPAL CODE CHAPTERS 15.55 D~ND 15.65 ~ THE STATE OF ~5~LASKA WASTEWATER DISPOSAL REGULATIONS (18D2kC72) ~ DRINKING WATER REGULATIONS (18DJkC80) . 3. THE ENGINEER MUST NOTIFY DHHS AT LEAST 2 HOURS PRIOR TO EACH INSPECTION, PROVIDE NOTIFICATION BY CALLING 343-4744 ( 24 HOURS ) (NOT REQUIRED FOR WELL ONLY PERMIT) 4. FROM OCTOBER 15 TO APRIL 15 A SUBSURFACE SOIL ABSORPTION SYSTEM UNDER CONSTRUCTION DURING FREEZING WEATHER MUST BE EITHER: A. OPENED AND CLOSED ON THE S2kME DAY B. COVERED, SEALED .~ND HEATED TO PREVENT FREEZING 5. THE FOLLOWING SPECIAL PROVISIONS. SPECIAL PROVISIONS: DATE: Eagle River En ineerin Services Louis Butera, P.E. P.O. Box 773294 (907) 694-5195 t~l Eagle River, AK 99577-3294 (907) 694-3297 fax June 8,1998 Jim Cross, P.E. Manager, On-Site Services Municipality of Anchorage P.O. Box 196650 Anchorage, AK 99519 Re: Mountain Valley Estates Lot 11 Blk 1 Narrative & Permit Application Dear Mr. Cross: The proposed well and septic system will have very limited impact on adjacent properties for the following reasons: 1. The surrounding lots are large, allowing sufficient room for septic sites. 2. Immediate neighboring septic systems are all +30' distance. 3. Reserve space is adequate, due to absorption capacity. 4. Drainage will not be affected and is not a major consideration in our design. If you have any questions please call our office at 694-5195. Sincerely, Louis Butera, P.E. \ 199~¢Sjp22-N^R.DOC Eagle River P.O. Box 773294 Eagle River, dkK 99577-3294 Louis Butera, P.E. (907) 694-5196 tel (907) 69'~-3297 fax SPECIFICATIONS FOR ON-SITE SEPTIC SYSTEM LEGAL: Mountain Valley Estates Lot 11 Blk 1 6/8/98 A. GENERAL. 1. The well and septic plan are for a single family residence only. 2. The drawing and or site plan shall be a part of this specification. 3. All materials and workmanship shall meet the Anchorage Department of Health and State Department of Environmental Conservation requirements. 4. All soil tests are advisory to the design and are to be verified or modified in the field by the engineer. 5. All excavations and depths are advisory and are to be verified in the field by the contractor to meet Municipality of Anchorage, Department of Environmental Conservation requirements. 6. It is the responsibility of the owner to obtain all necessary permits or easements and to locate any adjacent multi-family wells. 7~ The excavation is to be exactly in the area shown on the site plan, any deviation requires engineer approval. 8. It is always recommended that a surveyor locate the nearest lot line position and the location of any easements. 9. Any remaining open test hole excavations shall be filled. B. SEPTIC TANK 1. Septic tank shall have a minimum capacity of 1000 gallons and be of a MOA approved design. C. TRENCH 1. The trench is to follow the natural land contour to maintain uniform total depth of the trench bottom. 2. The bottom of the trench shall be level, plus or minus 1.5". 3. The total depth of the trench excavation is not to exceed 6' at any point. 4. The effluent line within the trench shall be laid level within 0.03'. 5. The trench gravel is to be covered with typar fabric material. 6. Soil or combination of mounded soil and extruded board insulation to a depth of Y or equivalent is to be placed over the leachfield. 7. The area over the trench is to be finish graded to prevent ponding of surface water runoff. 8. The septic tank and leachfield must not be closer than 100' to any existing private well, 150' to any Class "C" well, or 200 feet to any community well. RECOMMENDED LEACHFIELD DIMENSIONS: TOTAL DEPTH = 6' TRENCH LENGTH = 47' SOIL RATING = 1.2 GPD/ft2 SEPTIC TANK = 1000 gallons GRAVEL DEPTH = 4' under' pipe, 2" over pipe TRENCH WIDTH = Y BEDROOM CAPACITY = 3 Twenty-four (24) hours notice required for all inspections. \1997\98-022-spec.doc I EAGLE RIVER ENGINEERING SERVICES PoO, Box 773294 Eagle River, Alaska 99577 (907) 694-5195 ERES Project No.: 98-022 Calculated By: LB Date: 6/8/98 Legal: Mountain Valley Estates Lll BIk 1 Single Family 3 Bedroom Dwelling TEST HOLE Deep Trench Subsurface Wastewater Disposal Field Water use at 150 gallons per bedroom = 450 gallons Percolation rate = 1.2 minutes per inch Wastewater application rate = 1.2 gallons per day per square foot Required absorption area = 375 square feet Trench width ON) = 3 feet Gravel depth (D) = 4 feet Required length = Required absorption area / 2 / D Required length = 375 / 2 Required length = 47 feet Total Excavation Depth = 6.0 feet / 4 98-022-cal.xls 4:10 PM6/8/98 PERPORMED POR'. Municipality ol Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST 2 3 4 7 8 10 12 14 17 2O ~ ~ Louis A, B~era ~ ~ 'I~ '".-~" L~';~ LZZ ~] Township, Range, Section: SLOPE WAS GROUND WATER ENCOUNTERED? SITE PLAN IF YES, AT WHAT O DEPTH? t' ~_ p Oeplh to Waler Alter Monitoring? /"-2_ Dat~ d...c'-.~ ~ ~ Reading Data Gross Net Depth to Net Time Time Water Drop I f-z,t-¢'~ 1~.'3/ 7, z.z,, /~ r//, /', ~~ 1 3.'~o ~ ' ~" g '7 ~" (" PERCOLATION RATE /I '~ (m,nutes/,nch) PERC HOLE DIAMETER TEST RUN BETWEEN f FT AND O-/ FT COMMENTS PERFORMED BY: v~-~~-~J~ I *~-'-~~ r ~'""~-~2~ ~':''~'-~ CERTIFY THAT tHiS tEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE, DATE: 72-008 (Rev, 4/85) PERFORMED FOR: Munlclpallly of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST LEGAL DESCRIPTION: 2 3 4 5 6 7 8 9 10 11 12 13- 14- 15 16 17 18 19 20 ~'r~,,, ¢' 77'/ DATE PE.FORMEO: /__ ././' Township, Range, Section: WAS GROUND WATER ENCOUNTERED? SLOPE SITE PLAN S YES, AT WHAT (~ IF DEPTH? /~ p E Depth 1o Water Alter Monitoring? /~' ~' Dote: ~ *'-'~Y' Reading Date Gross Net Depth to Net Time Time Water Drop I ~'-.;z~/-~ lZ,'~z x"£~" ~ ~/~" ~", 2. ~ Iz:~-o ~'~" ~ ~/~' ~" ~ /~:~? ~ 'o/" F~ Z~ ,, ~" PERCOLATION RATE /' 2 (m,nutes/,nch) PERC HOLE DIAMETER TEST RUN BETWEEN ~ FT AND ~ ET COMMENTS PERFORMED BY:,-~,¢' x¢_~ ~.,,,,,.~. ~,_. ~- I ~L..~"~¢ CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: 72-008 (Rev. 4/85) MUNICIPALITY OF ANCHORAGE Development Services Department Phone: (907)343-7904 On -Site Water & Wastewater Section Fax: (907)343-7997 Certificate of On -Site Systems Approval OSC251299 Parcel ID 050 -641-24 Expiration Date: 7/30/2026 Legal description MOUNTAIN VALLEY ESTATES BLK 1 LT 11 Site address 4729 BIRDSONG DR Current property owner(s) PETTIBONE DAVID & ELISSA X The On-site system(s) is/are approved for 3 bedrooms Conditional approval for bedrooms, with the following stipulations: Comments or conditions: W Original Certificate Date: 7/30/2025 m This C ificate of On -Site Systems Approval (COSA) is intended to demonstrate the subject sys m(s) is/are in substantial compliance with municipal code. The Municipality of Anchorage, velopment Service Department (DSD) issues COSAs based upon representations provided by an independent professional engineer. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineer's submittal. ATTACHMENTS: COSA Checklist X Well Flow Advisory Absorption Field Advisory Nitrate Advisory Tank Age Advisory X Arsenic Advisory Other MUNICIPALITY OF ANCHORAGE /l Phone: 907-343-7904 Development Services Department_ Fax: 907-343-7997 On -Site Water & Wastewater Section Certificate of On -Site Systems Approval Application 1. GENERAL INFORMATION Parcel I.D. 050-641-24 description MOUNTAIN VALLEY ESTATES BLOCK 1 LOT 11 Complete legalP 4L7�29BIRDSONG DRIVE EAGLE RIVER, ALASKA 9957 Location (site address) Current property owner(s) DAVID & ELISSA PETTIBONE Day phone — 2, ON-SITE SYSTEMS SIZED FOR BEDROOMS dwelling units 3. TYPE OF WATER SUPPLY: E] Private Well serving # Water Storage ❑ Other Non-public well as regulated by MOA EJ k� ? �- ❑ Community Well or Public „F WASTEWATER DISPOSAL: 0 Private Septic F1 Private Septic serving 2 dwelling units 4, TYPO ❑ Holding Tank ❑ Community Septic or Public Sewer 5. SEPTIC TANK: X Steel ❑ Plastic ❑ Concrete ❑ Fiberglass Age27 _ - See advisory if steel or fiberglass older than 20 years Seepage Pit 6. ABSORPTION FIELD: ElAWWTS ❑ Bed 0 Deep Trench EJ Wide Trench ❑ Distance:__ - Waiver request for: Expedited review requested: ❑ is subject to inspection by municipal On-site staff By applying for this entitlement, this propertyied. to verify the accuracy of the information p CSsfj Waiver Fee $ OSA Fee $ Date of Payment Date of Payment Waiver # COSA # COSA Application Apr2025.doc COSA Checklist_May2025.docx COSA Checklist Legal Description: MOUNTAIN VALLEY ESTATES BLOCK 1 LOT 11 Parcel ID: 050-641-24 If more than 1 well and/or septic system on lot, provide separate checklist. Structure served by this system ____ A. WELL DATA -- NO WELL DRILLED Well log is filed with Onsite (or attached) Date drilled Total depth ft Cased to ft Sanitary seal is functioning correctly Wires are properly protected Casing height (above ground) in. Date of flow test for COSA Static water level at beginning of test ft. Well production at time of test gpm Water storage tank volume gallons Well disinfected for coliform test? Yes No Coliform bacteria is Negative Nitrate mg/L Nitrate less than MRL (ND) Arsenic ug/L Arsenic less than MRL (ND) Collected by Date Comments __________________________________________________________________________________ B. TANK DATA Measured operating fluid level in septic tank *NA Date of pumping NA Required maintenance completed, if AWWTS Comments: *Tank is empty and there is no house for it to be in use – please make a note to address with land-use building permit. There is no house foundation. C. LIFT STATION Required maintenance completed Age of lift station years Lift station material Comments: D. DISPOSAL FIELD DATA Which system tested (date installed) 9/15/1998 ALL standpipes present per record drawing Total measured depth from grade 11.2 ft (max) Measured depth to pipe invert from grade 6.6 ft (min) N/A – pressurized field. Per record drawings, field is insulated. Monitor tubes (MT) go to bottom of effective. (ED) If not, state depth into effective Presoaked required if (Required if house vacant or field not used for more than 30 days prior to date of test) Gallons introduced 2000 gallons 7/14/25 date Any rejuvenation treatment (past 12 months) N If yes, enter date Adequacy test date 7/15/25 Results Pass Fluid depth prior to test 0 in Water added 450 gal New fluid depth 5 in Elapsed time 30 min Final fluid depth 0 in Absorption rate 450 gpd FIELD STATUS – POST RECOVERY Effective depth (per record drawings) 48 in (MOA 4’ ED) Effective depth used 0 in (Final Fluid Depth) Effective depth remaining 48 in Comments/Deficiencies: There is only a septic on this lot & owner requested an adequacy test & COSA per selling contract. COSA Checklist_May2025.docx E. SEPARATION DISTANCES From Well on Lot to: (Please enter distances if less than required) Septic Tank/Lift Station on Lot > 100’ Yes if No ft Neighboring Tank > 100’ Yes if No ft Disposal Field on Lot > 100’ Yes if No ft Neighboring Disposal Fields > 100’ Yes if No ft Sewer Line/Main > 100’ Yes if No ft Sewer Manhole/Cleanout > 100’ Yes if No ft Sewer Service/Septic Line > 25’ Yes if No ft Holding Tank > 100’ Yes if No ft Animal Containment > 50’ Yes if No ft Manure/Animal Excreta Storage > 100’ Yes if No ft N/A – Served by Community Well (not on lot) or Public Water From Septic/Holding Tank and Disposal Field(s) on Lot to: (Please enter distances if less than required) Tank to Foundation > 10’ Yes if No ft Field to Foundation > 10’ Yes if No ft Tank to Property Line > 5’ Yes if No ft Field to Property Line > 10’ Yes if No ft Water Main/Service Line > 10’ Yes if No ft Surface Water > 100’ Yes if No ft Wells on Adjacent Lots: Wells > 100’ Yes if No ft Community Wells > 200’ Yes if No ft If tank or field is under driveway comment below F. ENGINEER’S COMMENTS G. CERTIFICATION & STATEMENT OF INSPECTION BY ENGINEER As certified by my seal affixed hereto and as of the validation date shown below, I verify that my investigation, based on procedures outlined in the Certificate of On-Site Systems Approval Guidelines, indicates that the on-site water supply and/or wastewater disposal system appears to comply with applicable Municipal and State codes, ordinances, and regulations in effect at the time of installation, unless noted otherwise. Name of Firm FIRST WATER CONSULTING Phone 907-350-9566 Engineer’s Printed Name CURTIS HUFFMAN, PE Date 7/19/25 Comments: This investigation was completed in compliance with MOA guidelines, regulations, and best industry practices / methods. The assessment of the condition of the well and septic applies only to the conditions as of the day tested. The flow and absorption rates may change due to subsurface conditions that may not be observed from the surface, changes in land use, local soil characteristics, groundwater levels that may fluctuate during the year, quality of construction (workmanship & materials), the water usage of the family being served by the system and maintenance. The operational life of all well and septic systems are subject to these various and dynamic characteristics and are outside the control of the evaluator of the well and septic system. Therefore, any or NO estimate of how long a system will function satisfactory for current or future occupants or guarantee that no unseen encroachments, deficiencies or discrepancies exist can be given by First Water Consulting & 07/19/25 MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT L� s On -Site Water and Wastewater Section www.muni.org/onsite Septic Tank Advisory Certificate of On -Site Systems Approval # OSC251299 Subdivision: Mountain Valley Estates Block:1, Lot: 11 907-343-7904 Fax: 343-7997 The septic tank for this property is 27 years old. The average life of an asphalt coated steel septic tank is 20 years. Typical replacement costs are $15,000 or more, not including engineering, surveying, MOA permitting fees or site restoration. This advisory must be attached to all copies of the subject Certificate of On -Site Systems Approval. This is an example of what the metal of a 30 year old steel tank MAY look like.