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HomeMy WebLinkAboutAUTUMN RIDGE LT 2AutAutumnPadge Lot 2 #015-054-05 Municipality of Anchorage Development Services Department " Building Safety Division On -Site Water and Wastewater Program, 4700 Bragaw St. P.O. Box 196650 Anchorage, AK 995198850 Page of www.cl.anchorage.ak.us (907) 343-7904 ON-SITE WASTEWATER DISPOSAL SYSTEM AND/OR WELL INSPECTION REPORT Permit Number. SWO90034 PID Number. 015-054-05 Nom" Harding Homes of Alaska, Inc. Wastewater System: C] New ❑ Upgrade Alaei, 9320 Autumn Ridge Circle Anchorage, AK 99516 ABSORPTION FIELD Per` 337.9109 Nw `txr a eoilr m Six 17 Dep T 0 Swax Tm O Swi ❑ Maxx 0 Diw LEGAL DESCRIPTION Sola TarDOM".*,> .6 GPOF? .16 R. Baca Lit 2 S� own o pp. epaan oom p9mr vb• Gw uwP Dunn pp. Autumn Ridge 7.8 F. 8 FL Tawvp lit" Swart Fixes icow apes p.a Cmti LM9m' 1.5.2.5 Fr. 94 FI. Well: © New [3 Upgrade Cx.w�..mt Nina.ra We z Owanc. uiwen`x" >16 3 A. Ft Cie>nraan IPnww. A S. C) Tawe Dpm. Ce m Tawe ar.apran rna Pp, YnrrY Private 261 n. 261 FL 1,504 Fr ASTM 03034 PVC Dnw De, Caiw Sua: Wow L" xwww D.i. imurw Alpine Drilling 6/19/09 189 Ft Little Dipper Excavating 4/16-202009 Yra Pwip SMVComa N•'Tr Aiiw Crane TANK 30 GPM Fr.2 Ft SEPARATION DISTANCES la Septic ❑ Holding ❑ S.T.E.P. ❑ Other. To Septic Absorption LIR Holding ueixrpnr.0 n From Tank Field Station Tank Sewer Un,,Anchorage Tank 2,000 Yearn Nwra.r a Canprinra W411 >100' >100' NIA WA >2V Steel (Rated for 10' Cover) Two (2) swfeuw,wr >100' >100' N/A N/A LIFT STATION aawv La LM _f/ N/A N/A Gr 'P,nV m' Yv,i rA 'Purp ar Mw, xt wen rnrr Yum n Fanaran >5' >10' WA WA w h k PW V M. a me iY .i EiR.arr in.p.c>on. Pei 101 by Cwun Orur None Noted R. ,m,i BENCH MARK Lorauan ra p.ao.a, Basement Stab Me4M 100.00 Ft- tEngineer's Engineer'sStamp Inspections performed by: A. Harala Dates: 1" 4116/09 �%%W-*►%\ qIli 4/17109 Y ��.pF •A �`o Development Services 2^i Department Approval _� .4 •••• *: 491H *,oe Conditional Approval Date: j. ....J.... .... ' Y.» :....... ..... EANDSON: v / rr' MICHAEL ER ciJ t• :� CE -4381 Reviewed by:ate: /� �p and approved �,;1;;, Ss; :'�. ABBOTT ROAD Page 2of3 0 LO Permit No. SVVM34 PID No. 015454-05 N W59'00'E 133.90- 10' CEA ESMT. --------------------- 10' LANDSCAPE ESMT. AUTUMN RIDGE SUBDIVISION LOT 2 40.319 S.F. A e -illz 03 T or 53r u ter 411 C5 63! 257 Ce 02a 5 5' C2 660 A6' Y1 594' 206 42 609 41 r 6V Bwoe Gw to Y in pn t7 V ML m t System T tr----- S em Ot N MxS2 06 THB 05 SV 61 W N io C5 u O b Mt 7lIA A O o b z ® 0 z Six`9edroom� Home\ \ 1 "=40' GRAVEL DRNE \ ® I Well O V I 0 Wa6 '..�,to / iO r t q•1 49th /� • uTuMN RIDGE ��R --. ��e ••-•-•o�k•• ----•• -• '. 391 PLAN AS—BUILT No..CE ••���,B.ESS; SCALE V - 40' �.�•• Municipality of Anchorage Page 3 of 3 DEVEOPMENT SERVICES DEPARTMENT 4700 South Bragaw Street Anchorage, AK. 99519-6655 - 343-7904 Onsite Wastewater Disposal System or Well Inspection Report Permit Number. SWO90034 PID No. 015-054-05 N � U 107.0 y UU 2,000 Gallon Septic Tank 82.3 NORTH LEG 108.2 / 104.6 98.8 -r II Drainfield Rock 88.8 4T (Trench Length) SOUTH LEG PROFILE AS -BUILT No Scale 04.8 N U nu Municipality of Anchorage Development Services Department Building Safety Dvfsion �r OrnSte Water and Wastewater Program 4700 Elmore Road P.O. Box 198850 Anchorage, AK 99507 www. el.onchcrace.ak.us (907) 343-7904 Soils Log - Percolation Test Performed For. -J V Data Legal Description: I yet . If - To shlp, Range. Section: 4$ Vo'r-'L F;I 10- e . it- 12- 13- 1-12-13- 16- 17- 18- 18- 17- 18- 1 Md, w d, WAS GROUND WATER ■■■ Gross Tme ENCOUNTERED? Depth to Water Net Drop I s IF YES. AT WHAT DEPTH? L Depth to Water Attar P Monkad"g? E Date 3vMW5 .9 Reading ■■■ Gross Tme NNEMEN6.ME iiftw■-E Depth to Water Net Drop I ■■ ■■■■■ME■■■ :i 3vMW5 .9 (031" ■■■■■wwMM■ rM■■■f MEME■ 3v ►tITIS :�/ ,Z ■■M■ I■■■■■■ :Id 3 o MINI >x " .2Gi� .a Reading Date Gross Tme Net Time Depth to Water Net Drop :i 3vMW5 .9 (031" :�{ 3v ►tITIS :�/ ,Z :Id 3 o MINI >x " .2Gi� PERCOLATION RATE (Mru"ncN PERC HOLE DIAMETER 11 TESTI UN BETWEEN/(d& FT • AND ,O PT PERFORMED BY: A. py . I CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALLSTATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: 00 12/16/2009 WED 10:57 PAR 907 522 6779 The Doutet Company ®001/001 From To Crsing type: sR•:•1 Slick -up f 1 Wall Thickness: I inches � � Kathy Diameter: 6 inches Depth: 261 feet 907-333-2829 p.l me 7 UncrType: . sill 7 13 Diameter: _ inches Dcpth: _ feet gravvlly sill 13 Alpine Drilling & Enterprises Well Log Permit Number: NSW090034 Date of Issue: 4-16-09 Parcel Identification Number: 015 -054 - Date Started: 6-18-0 Date Completed: 6-1.9-0 Is well locntcd ut approved permit location? x Yes ❑ No Legal Description: Autumn Ridge U 2 Property Owner Name & Address: Harding Homes of Alaska 9320 Autumn Ridge Circle Borehole Data: Depth (ft) Method of Drilling x air rotary ❑ cable tool Soil Type, Thickness & Water Strata From To Crsing type: sR•:•1 Slick -up 0 1 Wall Thickness: I inches Diameter: 6 inches Depth: 261 feet Silly gravel 2 7 UncrType: . sill 7 13 Diameter: _ inches Dcpth: _ feet gravvlly sill 13 17 Casing sticku p above ground: d Icct Static water level (from ground Icvcl): 189 feet scnrdysilt 17 33 sillygravel 33 44 Pumping level: 26/ I'M after hours pumping ill gpm Silly cohhly gravel 49 /62 Recovery Ratc: all gpm gravelly sill 162 211 Method of Testing:ahrlyi sill 111 235Well Intake Opening Type: silly gravel 235 142 x Open 1?nJ ClOpen I tole silly water sand & gravel 242 255 ❑ Screened Start Icct Stopped _ Nut ❑ Perforations Start _ feet Stopped _'feet wutersond & gravel 255 $61 Grout Type: hcnlan11L ranvlc.r Volume: alb'_' Pump: Intake Depth feet Pump site lip Brand Name I) Well Disinfected Upon Completion? x Yes ❑ No Method of Disinfection: chi(lriny tuhle C.ommcnts: Well Driller: Alpine /Drilling & Krllerprices Po/Jos /1014( Anchorage AK 94511 Development Services Department Property Owner Name & Address: Harding Homes Pump Installation Date: 1011912009 Pump Intake Depth Below Top of Well Casing: 255 feet Pump Manufacturer's Name: Grundfos Pump Model: 15 Sqe 15 290 Building Safety Division Pitless Adapter Burial Depth: 12 feet Pitless Adapter Manufacturer's Name: cambel On -Site Water d< Wastewater Program r 4700 Elmore Street ♦Q E- , , . .� 4 e i >.�" „a P.O. Box 196650 Pump Installer Name: Aarow Pump & Well Service LLC " Markeegich Anchorage, AK 99519-6650 Mayor w .muni ora/onsite (907)343-7904 Pump Installation Log Well Drilling Permit Number: SW Date of Issue: Parcel Identification Number: Replacement Only: YES NO Legal Description Lot 1, Autumn Ridge Property Owner Name & Address: Harding Homes Pump Installation Date: 1011912009 Pump Intake Depth Below Top of Well Casing: 255 feet Pump Manufacturer's Name: Grundfos Pump Model: 15 Sqe 15 290 Pump Size 1.5 hp Pitless Adapter Burial Depth: 12 feet Pitless Adapter Manufacturer's Name: cambel Pitless Adapter Installer: n/a Well Disinfected Upon Completion? ® Yes ❑ No Method of Disinfection: Recirc Comments: Pump Installer Name: Aarow Pump & Well Service LLC PO Box 110496,Anchorage, AK 99511 (907) 346- 9355 Attention: The pump installer shall provide a pump installation log to the DSD within 30 days of pump installation. ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 December 16, 2009 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Program P.O. Box 196650 Anchorage, AK 99519-6650 Subject: Lot 2, Autumn Ridge Subdivision Separation Distance Waiver Absorption Trench to Lot Line Dear On Site Services Engineer: The surface area on Lot 2, Autumn Ridge Subdivision is limited for an absorption site by the location of the well, the house and the driveway. The contractor came within 6' of the west lot line during construction of the absorption trenches. A waiver is therefore required. The absorption trenches will not conflict with wells or septic systems on any lots in the area. All separation distances can be met from wells, surface water and septic systems in the area. We therefore recommend the lot line waiver be issued to 6' from the west lot line. Sincerely, Michael E. Anderson, P.E. V L AN _ E. a.:E7SC% I6 Municipality of Anchorage n r] Development Services Department Onsite Water and Wastewater Program Menr c ^ Department **** VARIANCE/WAIVER REVIEW **** WR#: 090072 HA#:90 0446 Permit#: 090034 PID#: 015-054-05 Legal Description: Autumn Ridge Lot 2 Engineer. Anderson Engineering Applicant: Harding Homes of Alaska 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 6.0 feet. This waiver approval applies to the existing absorption field 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. ............................................................................... Waiver Is Granted: X Waiver is not Granted: Date: 12/17/2009 Approved by: Nam of Reviewer ............................................................................... Rec#:20 4244 Amount $200.00 Date Paid: 12/17109 **** VARIANCE/WAIVER REVIEW **** MUNICIPALITY OF ANCHORAGE h 710 Development Services Department �1 On-SiteWater& 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 Initial e Po er 3:c') Date Issued: Apr 16, 2009 Expiration Date: Apr 16, 2010 Permit Number: SW090034 Parcel ID: 015-054-05 Legal Description: AUTUMN RIDGE LT 2 Design Engineer: 0014 ANDERSON ENGINEERING Site Address: 9320 AUTUMN RIDGE CIR Owner Name: HARDING HOMES OF ALASKA, INC Lot Size: 40319 SO. FT. Owner Address: 9320 AUTUMN RIDGE CIR Total Bedrooms: 6 Permit Bedrooms: 6 ANCHORAGE. A 99516 - This permit is for the construction of: 0 Disposal Field ❑✓ Septic Tank ❑ Holding Tank ❑ Privy 0 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 healed to prevent freezing. Received By: Date:n6 Issued By: 2�,('/ (t j :4A' ZIt—, Date: L i Municipality of Anchorage Development Services Department Building Safety Division _ On -Site Water and Wastewater Program 4700 Bragaw Street P.O. Box 196650 Anchorage, Alaska 99519-6650 www.muni.org/onsite (907) 343-7904 ON-SITE SEWER/WELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. 015-054-05 Property owner(s) Harding Homes of Alaska, Inc. Day phone 350-1850 Mailing address 9380 Autumn Ridge Circle Anchorage, AK Zip Code 99516 Site address 9320 Autumn Ridge Circle Anchorage, AK Zip Code 99516 Legal description (Sub'd., Block & Lot) Lot 2, Autumn Ridge Subdivision Legal description (Township, Range & Section) Lot Size 40,316 Sq. Ft. THIS APPLICATION IS FOR (® all that apply): Absorption Field 0 Septic Tank Q Holding Tank ❑ Privy ❑ Private Well Water Storage ❑ Number of Bedrooms Six (6) THIS APPLICATION IS AN: Initial 0 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: Date of Payment: Waiver Fees: Date of Payment: Receipt Number. 6 77-5 Receipt Number. (Rev. 11105) ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 FAX MEMORANDUM DATE: April 14, 2009 TO: Debbie FROM: Mike Anderson, P.E. SUBJECT: LotX, Autumn Ridge Subdivision Well and Septic System Permit Modifications We have made the following changes to the permit application for the well and septic system for Lot Autumn Ridge Subdivision: 1. Additional drainage arrows have been added to the Site Plan. The new absorption trenches will be placed parallel to the existing slope. The topography in the area is very flat with no slopes in excess of 5% within 100' of the new septic system. 2. Both the Site Plan and the Area Map agree as to the location of the well, septic system and house. 3. The well logs for Lots 1 and 3 are attached which show no bedrock from the surface to 260' below. Soil formations encountered are all identified as gravelly silt or silty gravel indicating no impermeable layers were encountered. We are confident no bedrock occurs on Lot 2 in the area of the proposed absorption system or alternate site. We are also confident no impermeable soil layers are present. 4. No groundwater has developed in the test hole since it was originally excavated 5 days ago. We are confident no groundwater will develop over the next two days. We will leave the monitor tube in place to verify the absence of groundwater for the full 7 day monitoring period and request approval to continue with construction of the septic system at our own risk. ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 FAX March 23, 2009 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Subject: Lot 2, Autumn Ridge Subdivision Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of Lot 2, Autumn Ridge Subdivision intends to construct a new six -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 existing wells on the surrounding lots and in the area and septic systems on surrounding lots. No conflicts exist between the proposed septic system and well or septic systems and wells on adjacent lots. Drainage arrows are shown on the site plan showing the grade and direction of flow on the lot. The drainage pattern will not be changed as a result of this project. The test holes placed on the lot in the area of the absorption trenches and alternate site indicate silty sand with gravel (SM/GM). The percolation rate of the soil was determined to be 20-30 minutes per inch. No groundwater was found during the placement of the test holes and none was noted during the monitoring period. An application rate of .6 gallons per day per square foot was used in the design of the absorption system. We are proposing to place a new 2,000 -gallon septic tank and 2- 47' long by 3' wide by 8' effective depth absorption trenches to treat and dispose of the effluent generated in the house. The elevation of the distributio line in the absorption trench will be 8' below the surface and the total depth will be A flow splitter valve will be placed to insure even flow to each trench. The septic ank will be placed low enough to collect sewage from the basement level. The tank must be constructed of 3/16" thick steel to withstand the cover over the tank. ,/6'� JA r' 14 - Two test holes were placed on the lot during the subdivision process. The location of the new and alternate absorption sites are not entirely covered by the 30' radii from the test holes. The majority of the test holes placed in the subdivision however indicate similar soils. Most with faster percolation rates than those shown on the attached test Lot 2, Autumn Ridge Subdivision March 23, 2009 Page Two hole logs. Additional test holes will be placed during construction to verify soils conditions in the area of the absorption sites. Results will be forwarded with the certified as built after construction has been completed. The ground surface on the lot in the area of the septic system slopes to the south at a shallow grade with some cross sloping from the east. The new trenches 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 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, A Michael E. Anderson, P.E. Attachments V C-A,A%-ERSC+ PIAT No. 2001-1u AUTUMN RIDGE SUBDIVISION LOT 2 40,]19 S.F. ABBOTT ROAD 0 406' 406' ELEVATIONS BASED ON 1972 NGS DATUM OW N 8 133.90' 10' CEA ESNT. 10 CEA 5/8' REBAR CrM PER PUT) 10' LANDSCAPE ESMT. --------------- ----- I� • Well LOT 3 LOT 1 2-4r Long a 3' Wide a 8' Effect" Depth 1 Absorption Tranches 1$i 0 1e' •TKA m m AIL Sta Adwntes 3.000 rollon Treetmen 5 lam 9a n W a See Septic Tank 8 2 _ _ •TH9 I I Six Bedroom I I Home I --T G. SLAB 404, Well Proposed A . ORK Well • •The AU RIDGIDG=G 403' ..'*w* • I �� ............. 6�i f 4t'� � 49th i.....� ............. �. E PLAN_ '�����'`�" ;MICHAEL E ANDERSON'; C j SCALE ��j•"Ui:••., 1' = 50' ,-/E�;� LOT 2, AUTUMN RIDGE SUBDIVISION DESIGN FACTORS: SYSTEM REQUIREMENTS: Six Bedroom Home Deep Trench System Perc. Rate: 16-30 Min./Inch 2,000 Gallon Septic Tank Application Rate: .6 GPD/SF 8' Drainfield Rock 6 Bedrooms X 150 GPD/.6 GPD/SF (Application Rate) = 1,500 SF Absorption Area 1,500 SF/16 SF/LF = 93.75 LF Trench Length THEREFORE: Construct 2 - 47' Long x 3' Wide x 8' Effective Depth Absorption Trenches at the Location -Shown. Flow Line Elevation In Trench to be 8' Below Original Ground Surface. Total Depth to be&.Below Existing Ground. Provide 4' Cover Over Septic Tank and 3' Cover Over Absorption / Trench. Maintain 100' Separation from Wells in the Area. Place Splitter Valve to Insure Even Flow to Each Trench. Natural 41 L y „ Backfill Geotexble Fabric 6^ O 4" Perforated PVC (Holes Down) Drainfield Rock 3' TYPICAL DEEP TRENCH SECTION (NO SCALE).�.?PtE,�.........., •��i� • fir'' i NOTE: Grade Area Over Trench to Drain Away. : c,•' ann Minimum 6' Separation From Bedrock. �.....•..... "..... ""�,�.......y.. Minimum 4' Separation From Groundwater. - Minimum 1 00'Separation From Wells in the Area. � � MiCw�EI E. INOERSON ; Minimum 100' Separation From Surface Water or Streams.- No. CES l Ap Municipality of Anchorage Department of Health & Human Services 825 L Street, Anchorage, AK 99502-0650 SOILS LOG - PERCOLATION TEST Performed For: Bob Klein Date Legal Description: Lot 2. Autumn R6clgp Subdivision 11 1 OG/PT 3 4 5 Gravel/Sand Some Silt 6 GM/SM 7 10 11 12 13 14 15. 17 18 GP/GM Was Groundwater Encountered? If Yes, What Depth? Depth to Water After Monitoring Date: No None P 1/22/00 E kEL 6 ANDUSON Z. 2 CE -4381 : •��`". PROfESStB��.�`s ~ l�1?J9b�9 SITE PLAN I 1� . 40.461 sc.z 1104` Reading Date Gross Time Net Time Depth To Water Net Drop 1 4 -Dec 11:38 4- 2 12:08 30 5.25" 1.25" 3 12:10 4.06" 4 12:40 30 5.25" 1.19" 5 12:41 4- 6 13:11 30 5.19" 1.19" Bottom of Perc. Rate: 25 Min./Inch Perc. Hole Diameter: 6" Hole Test Run Between 4 Ft. and 5 Ft. Comments: Percolation Cavity Presoaked Prior to Testing. Performed By: A- Harala. I, Michael E. Anderson Certify That This Test Was Performed In Accordance With All State and Municipal Guidelines In Effect On This Date: 1/20/00 1 �4��•OF •A�41 #1 �* • 4918 GV ' • NN Municipality of Anchorage •• • 1•• •••• so i Department of Health & Human Services >~••••••••••• •• •••••••'•'•••••••. +s :,wcwft a ANDUSON 825 L Street, Anchorage, AK 99502-0650 0CE- c• ; SOILS LOG - PERCOLATION TEST 438 �0 i�3; • ��?= • • 104``` � Performed For: Bob Klein Date Performed:1199'' Legal Description: Lot 2. Autumn Ridne Subdivision SLOPE SITE PLAN 3 1 2 OG/PT TESTHOLF NO. 9 1 tl Net Drop 1 4 -Dec 11:40 40,46 s q.,;�; 2 12:10 30 4 1.07" 3 t i �'—✓ 5 5.12" Sand � 12:32 30 Some Silt 1.07"- 6 12:34 \0 \ 6 SM 1 6.19" 1.07" 8 Was Groundwater llly_ 9 Some Encountered? No S Cobbles If Yes, What Depth? L.71EAiLI+X 10 Depth to Water O After Monitoring None P 11 Date: 1122/00 E 1 13 15 1 1 191 Bottom of Hole Reading Date Gross Time Net Time Depth To Water Net Drop 1 4 -Dec 11:40 5.12" 2 12:10 30 6.19" 1.07" 3 12:12 5.12" 4 12:32 30 6.19" 1.07"- 5 12:34 5.12- 6 13:04 30 6.19" 1.07" Perc. Rate: 28 MinJlnch Perc. Hole Diameter: 6" Test Run Between 4 Ft. and 5 Ft. Comments: Percolation Cavity Presoaked Prior to Testing. Performed By: A Harala. I, Michael F. Anderson Certify That This Test Was Performed In Accordance With All State and Municipal Guidelines In Effect On This Date: 1120/00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT 4700 ELMORE ROAD ANCHORAGE, ALASKA 99519-6650 SOILS LOG - PERCOLATION TEST PERFORMED FOR: Harding Homes of Alaska DATE PERFORMED: 419/2009 LEGAL DESCRIPTION: Lot 2. Autumn Ridge Subdivision jT� TEST HOLE # A SLOPE SITE PLAN Mm OG/OL a " G • e e A a Silty Sand W/Minor Gravel SM WAS GROUNDWATER ENCOUNTERED') NO S L IF YES, WHAT DEPTH? 0 DEPTH OF WATER None etc- P AFTER MONITORING: DATE: 4/ 9 /v 49th f X15 BOH @ 21' No. CE+ l SEE SITE PLAN READING DATE GROSS TIME NET TIME DEPTH OF WATER NET DROP Start 4/9 4:10 5.88" 1 4:40 30 7.38" 1.5" Recharge 4:42 6.00" 2 5:12 30 7.38" 1.38" Recharge 5:14 5.75" 3 5:44 30 7.13" 1.38" PERC RATE: 22 MIN./INCH PERC. HOLE DIAMETER:8" TEST RUN BETWEEN 6.0 FT. AND 7.0 T. COMMENTS: PERCOLATION TEST CAVITY PRE SOAKED PRIOR TO TEST. TEST PERFORMED BY: A. HARALA I, MICHAEL E. ANDERSON, CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES ON THIS DATE: 4/10/2009 ON-SITE WASTEWATER DISPOSAL SYSTEM CONSTRUCTION AND MATERIAL SPECIFICATIONS SUBJECT: LOT 2, AUTUMN RIDGE SUBDIVISION GENERAL: The scope of this project includes the procurement and placement of a new 2,000 -gallon septic tank at the location shown on the Site Plan. Work also includes the construction of 2 new 47' long X 3' wide X 8' effective depth absorption trenches at the location also shown on the Site Plan. The distribution line in the trench will be placed at 8' below the existing ground surface. Total depth of the trench will be 16' below the existing ground surface. The new absorption trench and septic tank must be placed a minimum of 100' from all private wells and any surface water in the area and 10' from the water service line proposed for the lot. A minimum of 3' of cover is required over the absorption trench and 4' of cover over the septic tank. 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 Building Safety Division On -Site Water and Wastewater Program for system installations. Owners installing their own systems must receive prior approval from the On -Site Water and Wastewater Program. before beginning system installation. SEPTIC TANK INSTALLATION A new 2,000 -gallon septic tank must be procured from an approved source and installed at the location shown. The tank must be designed and constructed for a minimum burial depth of 8'. 2. A septic tank is to be constructed by a certified septic tank manufacturer. Construction shall include two 4" cleanouts for pumping access. Lot 2, Autumn Ridge March 23, 2009 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 1 00'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. All pockets of unacceptable materials must be removed and replaced. Lot 2, Autumn Ridge March 23, 2009 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, Fernco, or equal). 5. A permeable geotextile fabric (Typar, Mirafi or equal) must be installed between the final drain rock layer and the native soil layer. 6. All drain rock shall be .5" to 2.5" in diameter with less than 3% passing the #200 sieve. INSPECTIONS: Municipal Ordinance requires a minimum of two inspections. These inspections must be conducted under the supervision of a professional engineer registered in the State of Alaska. The first inspection must be conducted after the excavation of trenches, beds or pits and before the installation of any gravel. A septic tank may be set in place, but may not be backfilled. The second inspection must be conducted after the placement of the geotextile fabric, gravel, distribution piping, standpipes, cleanouts and insulation. No backfill should be in place at the time of inspection. Contractor shall provide a copy of all field survey layout and construction notes for use in preparing the certified as -built of the completed system. 4. 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 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. I further verify that based on the information obtain from the Municipality of Anchorage files and from my investigation and inspection, the on-site water suppiyor wastewater disposal system is(are) in compliance with all applicable Municipal and State codes, p o s, and regulations in effect at the time of installation. 1 ,game of Firm Anderson Engineering Phone 522-7773 Address P.O. Box 240773 Anchorage, AK 99524 Engineer's Printed Name Michael E. Anderson, P.E. Date 12/16/2009 tt se : WaiAa E ANDERSON • . 5. DSD SIGNATURE �I ���'., CE -4381 Approved for c_ bedrooms. �I�pF•l,...... Disapproved. R1' � TRO %. C'*ate d' 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 By: 0 Original Certificate Date: �� ���Cl (R« 11M) D. LIFT STATION Date installed Size in gallons Manhole/Access (Y/N) 'Pump on' level at _ in. 'Pump off" level at_ In. High water alarm level at In. Datum Cycles tested Meets alarm & circuit requirements? E. SEPARATION DISTANCES SEPARATION DISTANCES FROM WELL ON LOT TO: Septic tank/lift station on lot >t0o' On adjacent lots 3,100 Absorption field on lot >700' On adjacent lots >100' Public sewer main NIA Public sewer manhole/cleanout NIA Sewer /septic service tine 3125' Holding tank NIA Animal containment areas None Manurelanimal excrete storage areas None SEPARATION DISTANCES FROM SEPTICIHOLDING TANK ON LOT TO: Building foundation >5' Property line 3,S Absorption field >5' Water main NIA Water service line 11c Surface water >100• Wells on adjacent lots >100• SEPARATION DISTANCE FROM ABSORPTION FIELD ON LOT TO: Property line Building foundation 3110' Water main >10• Water Service line 3,10 Surface water 3,100' Driveway, parking/vehicle storage >2T Curtain drain None Noted Wells on adjacent lots 31100' F. COMMENTS: G. ENGINEER'S CERTIFICATION ��P: '/►7 •sf I certify that I have determined through field inspections and ",y�; 491d [ ••�•• k�jr review of Municipal records that the above systems are in �� y}•�••j ••••�/ "' conformance with MOA COSA guidelines in effect on this date. j ............... : �?.............. I, f90 MICHA9 �! ANDERSON Engineers Printed Name Michael E. Anderson. P.E. �,c��; �• CE Ggle�. Date 12116rzoos ...... - *1 COSA Fee s 6 S -F (• 6 x `4 d eD =an2l/ Waiver Fee $ �0y Date of Payment// � rf Date of Payment Receipt Number i�; � "I Receipt Number (Rev. 11105) Municipality of Anchorage • Development Services Department Building Safety Division On -Site Water& Wastewater Program S. `•' 4700 Bragaw Street P.O. Box 196650 Anchorage, AK 99519-6650 www.muni.org/onsfte (907)343-7904 CERTIFICATE OF ON-SITE SYSTEMS APPROVAL CHECKLIST Legal Description: Lot 2, Autumn Ridge SubdMaion Parcel ID: 015454-05 A. WELL DATA Well type Private If A. B, or C provide PWSID # _ Date completed 6/19/09 Sanitary seal (YM) Y Total depth 261 ft. Cased to 261 ft. FROM WELL LOG Date of test 6119/09 Static water level 169 fL Well production 30 g.p.m. WATER SAMPLE RESULTS: Coliform 0 colonies/100 mL Nitrate •505 mg/L Arsenic: NID mg/I Date of sample: 12/1/09 B. SEPTICIHOLDING TANK DATA Tank Type/Material SeptkJSteet Tank size 2,000 gal. Number of Compartments Two Foundation cleanout (YIN) Y Depression over tank (Y/N) N Date of pumping NewConstruction Pumper C. ABSORPTION FIELD DATA Date installed 4117/09 Length 94 R Total depth ' 17-16 ft. Well Log (YM) Y Wires properly protected (YM) Y Casing height (above ground) >16 in. AT INSPECTION ril Other bacteria 0 colonies/100 mL Collected by: A. Harala Date installed 4116rog Cieanouts (YM) High water alarm (YM) N Soil rating (g.p.dJft2 or ft2/bdrm).6 GPD/SF System type Deep Trench Width 3 ft. Gravel below pipe 6 ft Eff. absorption area 1.104 ft2 Monitoring tube Y Depression over field N Date of adequacy test New Const. Resufts (PaswFail) For_bedrooms Fluid depth In absorption field before test in. Water added gal. New depth in. Elapsed Time: min. Final fluid depth in. Absorption rate >= g.p.d. Any rejuvenation treatment (past 12 mo.) (YM & type) If yes, give date SCS RCEB Client same Project samc/M Client Sample ID Matrix Sample Remarks: 1096403001 Anderson Engineering Autumn Ridge Lot 2 Private Well Water Drinking Water Printed Date rime Collected Date/Time Received Date/time Technical Director 12/09/2009 10:56 12/01/2009 13:58 12/01/2009 15:30 Stephen C. Ede Allowable Prep Analysis Parameter Results PQL Units Method Containa ID Limits Date Date Init Metals by ICP/MS Arsenic ND 5.00 ug/L EP200.8 C (<10) 12/03/09 12/08/09 NRB Waters Department Total Nitrate/Nitrite-N 0.505 0.100 Microbiology Laboratory Colony Count 0 Total Coliform 0 Fecal Coliform 0 mg/L SM20 4500NO3-F B (<10) coV100mL SM209222B coV100mL SM209222B coVl00mL 5\12092228 A (<200) A (<I) A (<I) 12/03/09 RIT 12/01/09 DLC 12/01/09 DLC 12/01/09 DLC 1 "=40' PLAT NO. 2001-143 AUTUMN RIDGE SUBDIVISION LOT 2 40,319 S.F. ABBOTT ROAD 0 Lo N 89'59'00'E 133.90' 10' LANDSCAPE ESMT. --------------------- 1a a ri 0 n SEPTIC SYS" io 0 1 r 17 1' I EXISTING 13UILDING GRAVEL DRIVE WELL co V O L-18 L-112.29' R-180,00. R=50.00 O R+�20 Av RIDGE AS -BU GASTALDI LAND SURVEYING, LLC JEFF A. GASTALDI, R.L.S. 2000 E. DOWLING RD., SUITE 8 ANCHORAGE, ALASKA 99507 PHONE 248-5454 GRID DATE 2437 12/3/2009 F.B. JOB NO. 09-08 ARS2 z I HEREBY CERTIFY THAT I HAVE SURVEYED THE PROPERTY DEPICTED ABOVE AND THAT NO ENCROACHMENTS EXIST EXCEPT AS INDICATED. IT IS THE RESPONSIBILITY OF THE OWNER TO DETERMINE THE EXISTENCE OF ANY EASEMENTS, COVENANTS OR RESTRICTIONS WHICH DO NOT APPEAR ON THE RECORDED SUBDIVISION PLAT. UNDER NO CIRCUMSTANCES SHOULD ANY DATA HEREON BE USED FOR CONSTRUCTION OR FOR ESTABLISHING BOUNDARY OR FENCE LINES. ANCHORAGE RECORDING DISTRICT, ALASKA NOTE: NO CORNERS SET THIS DATE. .♦*raur,. ♦ OF A .* 1 ••.......•• 441 ico ,�•49IH *•• v •* 01 6000..... Jeffery A. Gastaldl o` ms's„'• LS -6091 ; •• °11 so' •••6666.•• • ayoA 4* •� ,o�oEss f ionot L°� ��� •rraar•�