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Home My WebLink AboutSKYWAY PARK ESTATES BLK 3 LT 7Skyway Park Estates Block 3 Lot 7 #019-151-01 Municipality of Anchorage ''e•. Development Services Department Building Safety Division On -Site Water and Wastewater Program, 4700 S. Bragaw SL P.O. Box 196650 Anchorage, AK 99519-6650 Page of www ci.anchorage.ak us (907) 343-7904 ON-SITE WASTEWATER DISPOSAL SYSTEM AND/OR WELL INSPECTION REPORT Permit Number. SW060054 PID Number. 019-151-01 a.n. William and Laura Walker Wastewater System: ❑ New ❑� Upgrade Aarw, 11901 Juniper St. Anchorage, AK 99516 ABSORPTION FIELD PIV'r 250.5675 Five (5) ruraaxa B•eaan• 0DwpTrrxn mSerb.Trwxlr❑Bed ❑Mw 4 ❑0ti— ` Tar eea LEGAL DESCRIPTION .B GP 1r 8 Ft. amrx La s�namwn Deva M Pt» Mo corn age417aa• Gray awn ean•aa ppe 3 7 Skyway Park Estates 2 Ft 6 Ft Twrwip arae Sacvm Fill p aaowW"Va0• Gave Lw.pn 2`7 Ft. 94 Ft. Well: El New ❑Upgrade 5 ra.ro. Irr. Dmrn owween rrs F.. caw". (Prwwa. A a. C) Tar Dem Caws b Tar aowrpaan "a Pp Mwwm Private 54 Ft. 49 Ft 940 Fp ASTM D3034 PVC Dmw Dw• Drea su•p Www La In•tiiiw Dw• Irmw•a Hefty 5115106 47.5 Ft Whiners Landscaping 5r5-812006 Yea3 Pury sw r cawv n«p3.ww G TANK GPM Ft. F SEPARATION DISTANCES ElSeptic ❑Holding ❑S.T.E.P. ❑Other. To Septic Absorption Lift Holding lublcmnviite • 4W 'r Fran Tank I Field Station Tank Sewer Line Anchorage Tank 1.500 Gr w« >100' >100' NIA N/A >200' Mw.nr Steel Two (2)1f sotwawrw >100' >100' N/A N/A LIFT STATION • eauw Laura >5' >10' N/A NIA Dr 'Fano •n' laves al 'Pure err t••w w � www term w Faagaean >5' >10' N/A NIA in r, in None Noted Puny MMe 4 MPam Eiwpcw intpe Parbnraq C~Dran "rnrL• BENCH MARK Lowuon ra D•wiVom Garage Slab avaWrl 100.0 FL t: .;•E ers t m{p t 9 ••'Qsf-�0 �� y 40 Ti -I �. Inspections performed by: A. Harala Dates: 1r 5/5/2006 ••�• ••••/ j n4 5/8/2006 •,p' MICHA:L a n^Icuscr4 -w OF rF Development Services Department Approval r' p�1��fc ;jj ate; • S: Conditional Approval by: Date: `��r�o / Reviewed and Approved by: l, Date: L — o 6 rrr � � • �•' .s9��1 o I .fir I DENN I S DR I VE JUNIPER STREET u O y / I A 1/1 dl / m c C/ C Ip uym O mmm D a 7 o s® m f 0 O o DMS Z � v. !l! .. m p I o,o / e o DOo cn V •O' ( d Mw -D0 m G 0��4 / C r' y C m H fo �o / I m 2 �1 p� Rti ple ; v / ®g N r _ _ m 2p�4p5g0 666p.u71uTY EASEYENi Z N (] 6g?1(()?) S00'00'00'E 172.15'(R&M) w + ; N U1 W N b W m N O N+ •'• + N N O V W I (; 01 + r O V Y V V y co O N 0 m Q 0 O Q W Municipality of Anchorage Page 3 of 3 DEVEOPMENT SERVICES DEPARTMENT 4700 South Bragaw Street Anchorage, AK. 99519-6655 - 343-7904 On -Site Wastewater Disposal System or Well Inspection Report Permit Number. SWO60054 U (n / N UL) Gallon Tank PID No. 019-151-01 U 3 F U PROFILE AS -BUILT - Scale: V - IT ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 MEMO DATE: 1118/2006 TO: Jeff Poet WITH: MoAlDevelopment Services/On-Site FROM: Mike Anderson SUBJECT: Lot 7, Block 3, Skyway Park Estates Subdivision Certificate of On Site System Approval (COSA) MESSAGE: Attached is the Pump Installation Log for the well on Lot 7, Block 3, Skyway Park Estates Subdivision. In addition, we have revised the Plan As -Built and verified the absorption trench was constructed a minimum of 10' from the building foundation. A certified copy of the revised as -built is attached. Oct 31 06 11:30a David W Baker May 25 06 02:34p ('i1vrtltFtYr•�h. SFWIiaixi,Ft -- 111.1X7: TL(n'• A.ncl Skyway Park Est 3 7 ••• %gcrkiiM_ 7JY'111h11r _aVFY BOREHOLE DATA(from top of casing)IDepth Malerra1:7 %pc, coltw & wetlF•.tiJ IIFII stickup 0 1 31 gravel 3 13 moist gravel — 18 sand & gravel 18^ 30 moist sand 8 gravel 30 33 gravel w/ sand 33 43 moist gravel w/ sand gravel 8 sand w/ H2O 43 r 49 49 1 52 clay 52 1 I I 1 Municipality of Anchorage Development Services Department Building Safety Division (M -Site Water and Wastewater Section 4700 South Brigaw St. 11.0. Dox 196650 Anchorage. AK (4519-6650 www.muni.org/onsitc (907)343.79(4 907-000-0000 p.2 P.2 Well Log Ivrlhnl•Uana4:OSjz _._6('1x.4„4.1:0Sr15.2006 1•r.ryw:ny<arar \auw•fi AAJrcar'nOT g Laura Walker 11901 Juniper St Ar7dt wage, Ak. 99516 %atyilFt % or _ r� of t)rillinrr nWINXI IX)Air rotary. ( 1 tbhlc 1tF,l. (hlwr� _ i (vcll usc: ( ) IIUhIla M11.111Y. (X) Dm W -.Ara•. Odwf 0'"11141171101c:.. 54_ 6, (`anm� xticLup: • _, ,,, 2 • . Ft 1 ('axis -47w: Steel 'n,;t;knes.: .250 i,wlwx ! f'wzirt r. dummy. 6.._ rnchoz U261i'daTlh: 49 , f: j Liner type; Di:nn.uar' - „uwhc% Dapch:. - t) static water (from top of casing): 4j,5 fl on 0515.2006 P".1nu Z k -W1 S vialJ: Gx+ ancr hmrz at I'M" Recovery nte:gpnt Method of tn�linj airlift ' UacahtpnwFt mcllwd: _ aidifti_ m,m;on: 1 hour WWII intake opanul- qpa: ( 1 Oren end. 1 ) 0001 We. lhlwr , X sercclwtl: %un: _ 49 Ii. Stoptrvl 54. li %Lreen iv v: Johnson s5 Stot4nnh si(c: _.040 Ile, inalal: Slam: - .�, ti. Sapped: Stan: .._ _ .. ft. Stopp.:d' .— •_--- li Note! ...... . .......................................................... .._..__..............._....... rratli grl•: bentonite._ vl�lwnc '_._.. _. Ikprh: rmrrl around surface . io 20 _ It None imxke Ikpth: 6 Pump site: _ _ _ _ hp. Untud N'as well disinrectcd I4xnt etulgrlation`. (X 1 Vcs. I I Ko Mt+IYFI ul'disinl:Ilion:Cak:lUf.R.ffypOC1)kX11e..(.Gflk)tlfle�... I u:illcrc,Fn.wntxr diwLun,cr%; ....... ................................ ....................... _................................................ (Coil Jrillcr tl:ml:: ;r t'untpanv nalnc:.•_Hefty_,. illiin9r..irtc:_.... .... .................... ....... h•I.Irbeq; uthtm..:._3540 AkuIa, Dr. .........._.........._ ............... _Anchorage Sute: _K 7an 99516 _ Rhone let"Il V : ( 907�,) 345593 fa�c345-4700 1 b i1 kn xlriuhin. 4ttenton: Proporty owner shall provide a well log to SSD within 6c0` �m daysof (well completion. t anut NumheC S Y r� t>.uc of lsarc: Apr.112 /2006. _ — Parcat IdcntifcaGnn vmthm.019 151 • 01 1. vett Iwal.nl at a(gtrovad pt.•rntil localimi! I XI Yrt or 1 ) Nn Development Services Department Building Safety Division On -Site Water dl Wastewater Program =;.�'` ' ��, 4700 Brogaw Street _ P.O. Box 196650 a Mark Be9 ich Anchorage, AK 99519-6650 Mayo! rrww.muni.oro/onsite (907)343-7904 Pump Installation Log Well Drilling Permit Number: SW 060054 Date of Issue: 4/12/06 Parcel Identification Number:o1 :151.01 Legal Description Lot 7, Block 3, Skyway Park Estates Property Owner Name & Address: William & Laura Walker 11901 Juniper Street Anchorage, AK 99516 Pump Installation Date: 6107106 Pump Intake Depth Below Top of Well Casing: 53 4 feet Pump Manufacturer's Name: Acumotor Pump Model: T43-50 Pump Size •5 hp Pitless Adapter Burial Depth: 11.4 feet Pitless Adapter Manufacturer's Name: Martinson B1ox Pitless Adapter Installer: Hefty Drilling Well Disinfected Upon Completion? [Z] Yes ❑ No Method of Disinfection: Calcium Hypochlorite Comments: Pump Installer Name: Hefty Drilling Attention: The pump installer shall provide a pump installation log to the DSD within 30 days of pump installation. MUNICIPALITY OF ANCHOR4GE Development Services Department Onsite Water 6 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: Apr 12, 2006 Expiration Date: Apr 12, 2007 Permit Number: SWO60054 Parcel ID: 019-151-01 Legal Description: SKYWAY PARK ESTATES BLOCK 3 LOT 7 Design Engineer: 0014 ANDERSON ENGINEERING Owner Name: WILLIAM & LAURA WALKER Owner Address: 11901 JUNIPER STREET ANCHORAGE. AK 99516 - Site Address: 12001 JUNIPER STREET Lot Size: 56000 SQ. FT. Total Bedrooms: 5 Permit Bedrooms: 5 This permit Is for the construction of: ❑✓ Disposal Field 0 Septic Tank ❑ Holding Tank Ej Privy All construction must be in accordance with: 1. The attached approved design. Private Well Ej Water Storage 2. All requirements specified In Anchorage Municipal Code Chapters 15.55 and 15.65 and the State of Alaska Wastewater Disposal Regulations (18AAC72 ) and Drinking Water Regulations (18AAC80 ). 3, The engineer must notify DSD at least 2 hours prior to each Inspection. Provide notification by calling (907) 343-7904 ( 24 hours ). ( Not required for a Water Supply Permit only). 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather must be either: A. Open and closed on the same day. B. Covered, sealed, and heated to prevent freezing. Received By. a I I Af Date: n �:�'%i/a�ir%� Municipality of Anchorage ' Development Services Department &G, Building Safety Division On -Site Water and Wastewater Program 4700 South Bragaw SL $ • cry P.O. Box 196650 Anchorage, AK 99519650 www.ci.anchorage.ak.us (907) 343-7904 ON-SITE SEWER/WELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. 019.151-01 Permit Number SW Property owners) Wiiilam and Laura Walker Day phone 250.5675 Mailing address (1)11901 JunioerStrent enehnn,.e evnne.e Mailing address (2) 12001 Juniper Street Zip Code Legal description (Lot, Block & Sub'd.) _Lot T. Block of Skywav Park Estates Subdivision Legal description (Section, Township & Range) Lot Size 56"000 SF Acres/Sq.Ft. THIS APPLICATION IS FOR: Number of Bedrooms ive (5) Sewer Only ❑ Well Only ❑ Sewer and Well ® Water Storage ❑ Sewer Upgrade ❑ THIS PROPERTY CONTAINS: Hot Tub ❑ Jacuzzi ❑ Swimming Pool ❑ Water Softening Unit 13Therapy Pool El 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. m EAU,Ll., (Signature of property owner or authorized agent) Permit Fees: Date of Payment II SWaiver Fees: Receipt Numberga� (Rev. 12/00) K Date of Payment Receipt Number. NOMMEU99, March 29, 2006 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Subject: Lot 7, Block 3, Skyway Park Estates Subdivision Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer. The owner of Lot 7, Block 3, Skyway Park Estates Subdivision intends to construct a new five -bedroom home on the lot. We are therefore requesting a permit be issued for the construction 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 locations of wells and septic systems on the surrounding lots. No conflicts exist between the proposed septic system and those on adjacent lots. Drainage arrows are shown indicating the surface slope of the property in the area of the new septic system. Test holes were placed on the lot in the area of the absorption trench and alternate site, which indicated a silty gravel with sand (GM) material.. The percolation rate of the materials was determined to be 6 to 15 minutes per inch. No groundwater was found during the placement of the test holes, and none has been noted during the ensuing monitoring period. An application rate of .8 gallons per day per square foot was used in the design of the absorption system. We are proposing to place a new 1,500 -gallon septic tank and a 94' 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 2' below the surface and the total depth will be 6'. A minimum of 3' of fill will be placed over the absorption trench and 4' over the septic tank. In lieu of the fill 2" of insulation may be placed and 2' of fill. The ground surface on the lot in the area of the septic system is nearly flat slopes gently to the east. The new trench will be constructed parallel with the slope as much as possible in conformance with Municipal requirements. The new septic system will be constructed a minimum of 100' from all wells and any surface water and 10' the Lot 7, Block 3, Skyway Park Estates March 29, 2006 Page Two proposed and existing water services in the area. If the system is constructed in accordance with our design the following statements apply: The system, if constructed as designed, will have no adverse impact on the wells in the area or those to be constructed in the future. 2. The system, if constructed as designed, will have no adverse impact on existing septic systems in the area or those to be constructed in the future. 3. 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. 4. 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, ZJ, (f� Michael E. Anderson, P.E. Attachments � 49th MICHAEL E. ANOER50N I 1 I �i 6 ..3 5 � ^� CLI I 7 i i 1 I _ —-------_ ---'�------- ewsL21. W@4I ----___--- I 7" Ij a \ ry.rw g�\_ wr I \r,r � • EW q ,y�� 0 r\� \\ EL9 w« �0 9 \ / � by s °O e� oU GQ.v W CF w.•..�.....ss; 3'�� SKYWAY P ARK ESTATES ._........ ,,..,. ,�., % No.FcE4m, �.. N.. LOT 7, BLOCK 3 •' �H�I r ,� ••T,.r�i ♦'••••;; AREA MAP tS„•.•• SGIE 1•. too' m LOT 79 BLOCK 31 SKYWAY PARK ESTATES SUBDIVISION DESIGN FACTORS: Five Bedroom House SYSTEM REQUIREMENTS: Perc. Rate: 6 to 15 MMin./Inch5' Wide Trench System Application Rate: .8 GPD/SF 1,500 Gallon Septic Tank 4' Drainfield Rock 5 Bedrooms X 150 GPD/..8GPD/SF (Application Rate) = 937.5 SF Absorption Area 937.5 SF/5 SF/LF".5 (Red. Factor) = 93.75 LF Trench Length THEREFORE: Construct An Absorption Trench 94' Long x 5' Wide x 4 Effective Depth. Flow Line Elevation In Trench to be 2' Below Original Ground Surface. Total Depth to be 6' Below Existing Ground. Provide 4' Cover Over Septic Tank and 3' Cover Over Absorption Trench. In Lieu of Cover Place 2" of Direct Bury Insulation and 2' of Cover Over Septic Tank and Absorption Trench. Natural 16" Backfill Geotextile Fabric 6" 4'0" 5' TYPICAL 5' WIDE TRENCH 4" Perforated PVC (Holes Down) Drainfield Rock CTION NOTE: Grade Area Over Trench to Drain Away. Minimum 6' Separation From Bedrock. 4ft j� Minimum 4' Separation From Groundwater. Minimum • 100' Separation From Wells in the Area. I'�j4_. Minimum 10' Separation From WaterSurface Services inrthe Streams ii e.iwoEnso •��i�`c��. N 2 3 4 5 6 d LO 17. MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT/BUILDING SAFETY DIVISION ON-SITE WATER AND WASTEWATER PROGRAM 4700 SOUTH BRAGAW ANCHORAGE, AK 99519 SOILS LOG - PERCOLATION TEST PROJECT #: PERFORMED FOR: Bill Walker DATE PERFORMED: 3/8/2006 LEGAL DESCRIPTION: lot 7. Block 3. Skyway Park Estates Subdivision TEST HOLE # 1 SLOPE SITE PLAN OG/OL 49th4 cern BOH I Flat to 2% READING DATE GROSS TIME NET TIME N NET DROP Start 3/27/06 T Silty Gravel 1 10:34 With Sand 5.75" S Recharge GM N a <20% Silt 11:05 30 5.44" Dense Recharge 11:06 2.25" WAS GROUNDWATER 3 11:36 30 ENCOUNTERED? NO S Damp L IF YES, WHAT DEPTH) 0 GW/SW DEPTH OF WATER None P <5 Min./In. AFTER MONITORING: E DATE: 4/22006 49th4 cern BOH I Flat to 2% READING DATE GROSS TIME NET TIME DEPTH TO WATER NET DROP Start 3/27/06 10:14 2.44" 1 10:34 30 5.75" 3.31" Recharge 10:35 2.38" 2 11:05 30 5.44" 3.06" Recharge 11:06 2.25" 3 11:36 30 5.25" 3.00" PERC RATE: 10 MIN./INCH PERC. HOLE DIAMETER: 8" TEST RUN BETWEEN 4 FT. AND 5 T. COMMENTS: Test Hole Pre Soaked Prior To Percolation Test TEST PERFORMED BY: ALAN HARALA 1, MICHAEL F. ANDFRSON, CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES ON THIS DATE: 4/3/2006 2 3 4 5 6 MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT/BUILDING SAFETY DIVISION ON-SITE WATER AND WASTEWATER PROGRAM 4700 SOUTH BRAGAW ANCHORAGE, AK 99519 SOILS LOG - PERCOLATION TEST PROJECT #: PERFORMED FOR: Bill Walker DATE PERFORMED: 3/612006 LEGAL DESCRIPTION: Lot 7. Block 3. Skvwav Park Estates Subdivision TEST HOLE # _ 2 SLOPE SITE PLAN OG/OL Silty Gravel With Sand GM <20% Silt Dry Dense 11 12 S NET TIME GW/SW IF YES, WHAT DEPTH? 0 DEPTH OF WATER None <5 Min./in. 13 E DATE: 4/2/2006 Damp •�0�16' 30 6.25" 3.12" Recharge 14t 3.00" :49th 17 BOH WAS GROUNDWATER ENCOUNTERED? NO S NET TIME L IF YES, WHAT DEPTH? 0 DEPTH OF WATER None P AFTER MONITORING: E DATE: 4/2/2006 10:51 No. ce4H, Flat to 2% READING DATE GROSS TIME NET TIME DEPTH TO WATER NET DROP Start 3/27/06 10:21 3.13" 1 10:51 30 6.25" 3.12" Recharge 10:52 3.00" 2 11:22 30 6.06" 3.06" Recharge 11:23 3.06" 3 11:53 1 30 1 6.06" 1 3.00" PERC RATE: 10 MIN./INCH PERC. HOLE DIAMETER: 6_ TEST RUN BETWEEN 4 FT. AND 5 T. COMMENTS: Test Hole Pre Soaked Prior To Percolation Test TEST PERFORMED BY: ALAN HARAI.A I, MICHAEL F. ANDERSON, CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES ON THIS DATE: 4/312006 ON-SITE WASTEWATER DISPOSAL SYSTEM CONSTRUCTION AND MATERIAL SPECIFICATIONS SUBJECT: LOT 79 BLOCK 3, SKYWAY PARK ESTATES GENERAL: The scope of this project includes the procurement and placement of a new 1,500 -gallon septic tank at the location shown on the Site Plan. Work also includes the construction of a new 94' 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 2' below the existing ground surface. Total depth of the trench will be 6' below the existing ground surface. A separation distance of 100' from the well on this lot and on adjacent lots and 100' between the septic tank and absorption trench and any surface water must also be maintained. In addition, a separation distance of 10' between components of the septic system and any water service line is required. A minimum of 3' of fill is required over the absorption trench and 4' over the septic tank. In lieu of the required fill 2" of insulation and 2' of fill may be placed. 2. 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. 3. 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. 4. 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. 5. Contractors installing wastewater disposal systems must be certified by the Municipal Department of Health and Human Services for system installations. Owners installing their own systems must receive prior approval from D.H.H.S. before beginning system installation. SEPTIC TANK INSTALLATION I. A new 1,500 -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 7, Block 3, Skyway Park Estates Subdivision March 29,200i; 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. 2. Distribution piping must be placed level with perforations down atop a level bed of drainfield rock. Rock should then be placed over the pipe to provide a minimum of 2" of cover. 3. A silt barrier or 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 ground must be perforated. 5. 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. 6. 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. 8. A minimum 2' of accepting soil is required below the drainfield rock for a 5' wide trench. Contractor shall verify this condition prior to placement of the rock. All pockets of unacceptable materials must be removed and replaced. Lot 7, Block 3, Skyway Park Estates Subdivision March 29, 2006 Page 3 of 3 MATERIAL SPECIFICATIONS: 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.B.S. (perforated and solid). 3. Insulation shall be at least 2" thick extruded direct burial polystyrene (Dow Chemical Co. Styrofoam HI or equal). 4. Septic tank inlets and outlets shall be fitted with watertight couplings (Caulder, Femco, or equal). 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. 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.muni.org/onsde (907) 343-7904 CERTIFICATE OF ON-SITE SYSTEMS APPROVAL FOR A SINGLE FAMILY DWELLING Parcel I.D. 019.151-01 1. GENERAL INFORMATION T:;FLtLeDW1< COSA #QInp63aj Expiration Date: 2. — /.S•— O Complete legal description Lot 7. stock 3, Skyway Park Estates Subdivision Location (site address) 12001 Juniper street Mawrage, AK 99516 Current Property owner(s) William and Laura Walker Mailing address 11901 Juniper Street Anka orage, AK Day phone Lending agency Day phone Mailing address Real Estate Agent Day phone Mailing Address Unless otherwise requested, COSA will be held by DSD for pickup. 2. NUMBER OF BEDROOMS: Five (5) 3. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: Individual Well✓❑ Individual On-site 11 Individual Water Storage ❑ Individual Holding Tank ❑ Community Class Well ❑ Community On-site ❑ Public Water System ❑ Public Sewer ❑ The Municipality of Anchorage Development Services Department (DSD) issues Certificates of Onsite Systems Approval (COSA) based only upon the representations given In paragraph 4 by an independent professional civil engineer registered In the State of Alaska. Certificates of Onsite Systems Approval are required for the transfer of title (except between spouses) for properties served by a single-family on-site wastewater disposal and/or water supply system. DSD also issues COSAs upon request to homeowners. Certificates of Onsite Systems Approval are valid for 90 days from the date of issue for properties served by a private or Class C well and may be reissued with new water sample results. (Certificates may be reissued for a period of up to one year with valid water samples.) Certificates are valid for one year for properties served by Class A or B wells or a public water system. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineer's work. 4. STATEMENT OF INSPECTION BY ENGINEER As certified by my seal affixed hereto and as of the validation date shown below, 1 verify that my investigation, based on procedures outlined in the Certificate of On -Site Systems Approval Guidelines for this application, shows that the on-site water supply and/or wastewater disposal system is (are) safe, functional and adequate for the number of bedrooms and type of structure indicated herein. 1 further verify that based on the information obtained from the Municipality of Anchorage files and from my investigation and inspection, the on-sfte water supply and/or wastewater disposal system is(are) in compliance with all applicable Municipal and State codes, ordinances, and regulations in effect at the time of installation. Name of Firm Anderson Engineering Address P.O. Box 240773 Anchorage. AK 99524 Engineer's Printed Name Michael E. Anderson, P.E. b. DSD SIGNATURE Approved for bedrooms. Disapproved. Phone 522-7773 Date _10131/2009 Conditional approval for bedrooms, with the following stipulations: Attachments: COSA Checklist X Septic System Advisory Well Flow Advisory Nitrate Advisory Arsenic Advisory Maintenance Agreements Supplemental Engineer's Report Other oe By: Original Certificate Date:/ — /-6'-0 G (R.. nAs) Municipality of Anchorage .. ' Development Services Department Building Safety Division On -Site Water & Wastewater Program 4700 Bregaw Street P.O. Box 196650 Anchorage, AK 995196650 www.muni.org/onsfe (907) 343-7904 CERTIFICATE OF ON-SITE SYSTEMS APPROVAL CHECKLIST Legal Description: Lot 7, Brock 3, Skyway Pak Esutes Subdivision Parcel ID: 011i151-01 A. WELL DATA Well type M116 If A. B, or C provide PWSID # _ Well Log (Y/N) Y Date completed 5113106 Sanitary teal ('Y/N) Y Wires properly peed (Y/N) Y Total depth 54 ft. Cased to 49 ft. Casing height (above ground) >24 in. FROM WELL LOG AT INSPECTION Date of test 5/15/66 Static water level 47.5 Wall production 3 g.p.m. g.p.m. WATER SAMPLE RESULTS: Coliform o eolonies/100 mL Nitrate 3.06 mg/L Other bacteria o colonies/100 mL Arsenic: WD nng/I Date of sample: 1019/06 Collected by: F. L B. SEPTICIHOLDING TANK DATA Tank Type/Materiei SOPWS r Date installed 516 2m Tank size 1500 gal. Number of Compartrnents Two Cleanouts (Y/N) Y Foundation cleanout (Y/N) Y Depression over tank (Y/N) N High waiter alarm (Y/N) N Date of pumping Now Construction Pumper C. ABSORPTION FIELD DATA Date installed SWAN Sail rating (g.p.d.M2 or ft2tbdrrn) .e GPD/SF System type 5' Wide Trench Length 94 ft. Width 5 ft. Gravel below pipe 6 tt Total depth13 R Eft. absorption area 940 ft . Monitoring tube Y Depression over field N Date of adequacy test NOW CoraL Results (Pass/Fai) For _ bedrooms Fluid depth in absorption field before test in. Water added gat. New depth in. Elapsed Time: min. Final fluid depth in. Absorption rate >= g.p.d. Any rejuvenation treatment (past 12 mo.) (YIN & type) If yes, give date D. LIFT STATION Date installed Size in gallons Manhole/Aocess (YM) 'Pump on' level at _ in. 'Pump ofr level at _ in. High water alar level at in. Datum Cycles bested Meets alarm & circuit requiromeft? E. SEPARATION DISTANCES SEPARATION DISTANCES FROM WELL ON LOT TO: Septic tank/lift station on lot >1W On adjacent kits >IW Absorption field on lot >IW On adjacent lots >IW Public sewer main NIA Public sewer manhole/cleanout WA Sewer /septic service One >2' Holding tank NIA Animal containment areas None Manure/animal excrete storage areas None SEPARATION DISTANCES FROM SEPTIC/HOLDING TANK ON LOT TO: Building foundation >6 Property fine>5_ Absorption field >T Water main NIA Water service line »a Surface water >IW Wells on adjacent lots >1W SEPARATION DISTANCE FROM ABSORPTION FIELD ON LOT TO: Property line >IV Building foundation >IV Water main MIA Water Service line »c' Surface water >IW Driveway, parking tele storage >25' Curtain drain None Npted Wells on adjacent lots >10V F. COMMENTS: G. ENGINEER'S CERTIFICATION •`SFE OF --' I car* that I have determtned through field inspections and �4�' review of Municipal records that the above systems are in !' 49th ° conformance with MOA COSA guidelines in efed on this date. W,Me L E mtO R$ Engineer's Printed Name Michael E. Anderson. P.E.�� s No a -.m Date tastrmoe •eee�h; ss wl° COSA Fee S -5-7—,S-0 Waiver Fee $ Date of Payment - --1� -.'�T / - C Date of Payment Receipt Number Receipt Number (Rev. IIM) / SCS RcEN 1066132001 Client Name Anderson Engineering Project Name/H Lot 7 DIk3 Skyway Park Estates Client Sample ID Lot 7 DIk3 Skyway Park Estates hlatris Drinking Water Sample Remarks: All Datesrrimes are Alaska Standard Time Printed Date/Time 10/202006 10:09 Collected Daterrime 10/092006 16:33 Receired Daterrime 10/092006 16:57 Technical Director Stephen C. Ede Pammetcr Results PQL Units Method Container ID Allouahlt Limits Prep Analysis Date Date Init Metals by ICP/MS Arsenic ND 5.00 ug/L EP200.8 C (<10) 10/11/0610/12/06 TK Waters Department Nitrate -N 3.06 0.100 mg/L EPA 353.2 B (<10) 10/09/06 XZ Microbiology Laboratory Total Coliform 0 coVl00mL SN1209222B A (<I) 10/09/06 DPT gnrz Ft n oz oco��pp0o Q o= o 0 o•ti r 4d ao opo ST9�0 OBD':' � � ' : �• ••.F`40 0 00 N �n O Y O p �c ,7 � 0 Y � •p ; ''Tl Wim(•% oa •'. 0 : D� 020 Owi 6 0445` ••. r C � 03 ��D000000 9 C m pN r \ DENNIS DRIVE _ Z cl, JUNIPER STREET lu o w E=131, 31 (A GRID) w R�60.00(M) 0) a, L=130.24' R�60.00' R N 2 / N m rnNU S 0 1 O O) N Q 0/ I O a U •-•I Jco / O I C) N a W c77 / CS Z0) ' m0 o �� o m I m li rNr -i o�', a p z 300 v O' (D v `c'O•� to 00 :3 w o It O Cv ns;:;:; I C O Ja�fli/ Im W 2 / In o � o Egayl0...m 5ERz 4. iL S • 'sa��rn o 3102 ago RSg�o X43>} I •' K Qg Is U; :o / 66.4 Rn9so Rs too E�.99 �s $g �oS / voo$ O — 3 a N _ oc T. UTILITY YRA; to 3 ��20�0. — o EASEMENT as a 4054+w s, (�j S00'00'00"E 172.15'(R&M) I I 11 x R g I g 5i O O q 3 c I Ln r;.