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HomeMy WebLinkAboutAUDUBON HILLS #1 BLK 3 LT 7Onsite File -So g-7 #0 15 am 2 31'a 7:4 Municipality of Anchorage On-Site Water and Wastewater Section • (907) 343-7904 Page of ON-SITE WASTEWATER INSPECTION REPORT Permit Number: OSP181427 PID Number: 015-231-74 Dwelling: ❑ Single Family (SF) ❑ with ADU ❑ Duplex (D) ❑ Two Single Family Project: ❑ New ❑ Upgrade Name Molly Duffy ABSORPTION FIELD ❑Deep Trench El Wide Trench RE Bed El Mound Site Address 1411 W. 36th Ave. #E4 Anchorage, AK 99503 ❑ Other Phone Number of Bedrooms Soil Rating Total depth from original grade 310-2501 6 2.0 GPD/SF 1.45 Ft. LEGAL DESCRIPTION Depth to pipe invert from original grade 0.95 Ft. Gravel depth beneath pipe 0.5 Ft. Subdivision Block Lot Audubon Hills #1 3 7 Fill added above original grade 2.8' Ft. Gravel length 30 Ft. Township Range Section Gravel width 15 Ft. Beds: Number of Lines 3 Distance between lines 5.0 Ft. SEPARATION DISTANCES To Septic Absorption Lift Station ( Holding Sewer Total absorption area Number of trenches Dist. between trenches From Tank Field Tank Line 450 Ft2 Ft. Well >50' >50' N/A N/A >25' TANK ❑ Septic ❑ S.T.E.P. ❑ Holding ❑® Other Manufacturer Infiltrator/Ferguson Capacity See record profile Gal. Surface Water >50' >50' N/A N/A Material Plastic Number of compartments 1 Lot Line >5' >10' N/A i N/A NA Foundation >10' >10' N/A N/A LIFT STATION Manufacturer Infiltrator Capacity 1060 Gal. Remarks This is a Quanics Advanced Treatment System. MOA Approved Sand 3.65' 5.25' below bed. Alarm location Inside garage Electrical installed by Fuchs Electric PIPE MATERIAL House to tank D3034 Tank to drainfield D1785 Installer Pomranning Excavation Drainfield D3034 CO/MTD3034 Inspector J. Mlllette BENCH MARK (Assumed elevation) 100 ft Inspection 151 7/23/19 2nd 8/14/19 da:3t° Location and description Threshold of lower back door. 4th ON-SITE WATER AND WASTEWATER SECTION APPROVAL Engineer's Stamp E OF "' '°•:.4'S Conditional Approval: Date �4r�^P,,•••°' 049th $= i ... ...... .... ......... .... ..4.u..'� ® I ........................� ............�. s.IJaw� a MICHAEL E. ANDERSON Septic System %•; _� Approve :� Date B=� ��T� �•.,� 10/15/198..•°`c���® FD ROFESS\,' ®O' Note: this approval does not include ell permit requirements.' trcev UD/vu 10) PERMIT # OSP181427 <)i o PI D # 015-231-74 LOT 6 1060 GALLON INFILTRATOR SEPTIC TANK SINGLE COMPARTMENT 1060 GALLON INFILTRATOR RECIRCULATION TANK w/ AERATION SYSTEM / MT5 SINGLE COMPARTMENT Cob SW 30' LONG x 15' WIDE x .5' EFF. DEPTH ABSORPTION BED t 49 MICHAEL E. ANDER4 S No, CE -4381 A ••,•_ 10/15/19 _, oo MT3 C COCO•'TH3 C07 MT4 LOT 7' sv2 v TH#1 14.2 15.0 SV1 `21.3 2G0 cot SV2 nrz • MW 61H2 QUANICS MT5 AEROCELL ATS -8 27.3 TRICKLING FILTER 27.4 ALTERNATE SITE SW 25.7 31:9 SV5 35.4 t � 29.7 30.9 LOT 3 34.5 38.7 MTI 36.4 47.4 CO2 37.6 49.4 CO3 36.9 51.7 C04 37.0 54.5 MT2 37.0 FCO 14.2 15.0 SV1 `21.3 19.8 SV2 17.8 26.8 MT5 22.6 27.3 SV3 27.4 29.0 SW 25.7 31:9 SV5 35.4 35.3 C08 29.7 30.9 MH3 34.5 38.7 MTI 36.4 47.4 CO2 37.6 49.4 CO3 36.9 51.7 C04 37.0 54.5 MT2 37.0 55.6 2CO 35.7 56.2 MH2 34.6 57.1 MH1 33.5 57.3 C01 32.3 57.5 MT4 66.5 81.2 C07 64.6 78.8 C06 64.7 77.1 C05 65.3 75.7 MT3 66.0 75.5 LEGEND CO - CLEANOUT 2CO - DOUBLE CLEANOUT PLAN AS -BUILT FCO - FOUNDATION CLEANOUT MH - MANHOLE 0 50 100 MT - MONITORING TUBE FEET SV - SEPTIC VENT PV - PUMP VAULT 1 "=50' TH - TEST HOLE CONTOUR INTERVAL -5' AUDUBON HILLS #1, BLOCK 3 LOT 7 PERMIT # OSP181427 PID # 015-231-74 L _ c 99.1 95.1 2" INSULATION 94.15 I I 1060 GAL INFILTRATOR RECIRCULATION TANK (SINGLE COMPARTMENT) we 102.1 FINISH GRADE OUB 99.3 ORIGINAL GRADE 98.35 DRAINFIELD ROCK 1198.35 97.855 .MOA APPROVED FILTER SAND 97.85 92.6 94.2 �® 30' — GROUNDWATER @ 94.8 ON 8/1/19 �n 89.3 I-- -BUILT PROFILE AS .n r AUDUBON HILLS #1, BLOCK 3 LOT 7 PERMIT # OSP 181427 PID # 015-231-74 O U) 99.6 95.6 1530 GAL INFILTRATOR =94.957SEPTIC TANK 94.6 (SINGLE COMPARTMENT) WATER @ 92.0 91.1 > > 00 O cn c/ U 99.2 95.2 94.55 1060 GAL INFILTRATOR SEPTIC TANK 94 2 (SINGLE COMPARTMENT) 90.8 OF q� ho J'•• '••y��� Jam" J�• MICHAEL E. ANDERSON PROFILE AS—BUILT ���F.No. CE_4381 fN61N El0.1NG (NO SCALE) Q " • .. .�a �+v �� fit-PROFE5���®®. ® DOC CO dba BILL 8, COLE OLLIVAN WATER WELLS P.O. Box 670269, Chugiak, AK 99567 688-2759 OWNER OF LAND: Spinell Homes ADDRESS: LEGAL DESCRIPTION Audubon Hills #1 Block 3 Lot 7 DATE: 1-21-19 PERMIT OSP181427 DATE OF ISSUE: 12/12/18 NUMBER: TAX IDENTIFICATION 01523174000 NUMBER Is well located at approved permit location: ®Yes —]No Method of Drilling: ®air rotary Ficable tool Depth of Well: 145 Casing Type: Steel Wall thickness ,250 inches Diameter: 6 inches, depth 84 feet Liner type Static Water Level: Flowing feet Recovery Rate 15 ® gpm ❑ gph Method of Testing Air Well Intake Opening Type: ❑ open end ®open hole Screened Start feet Stopped ® Perforations Start 42 feet Stopped 52 Grout Type: Bentonite Volume: 50lbs Depth: from 2 feet, to 42 feet Well Disinfected Upon Completion: ®yes Ono Method of Disinfection: Chlorine 50 PPM Comments: Bore Hole Data Depth From To 0 2 2 5 5 8 8 40 40 49 49 61 61 80 80 138 138 145 Casing Stickup Overburden Peat Silty Sand & Gravel Sand & Gravel Water Clay & Gravel Hardpan Broken Bedrock Bedrock Drillers Name: Cole Sullivan ATTENTION: It is the responsibility of the property owner to submit a copy of the well log to the proper authority. Municipality of Anchorage: Department of Health & Human Services and/or Department of Environmental Conservation. MatSu Borough: Department of Environmental Conservation. I Parcel Identification Number: 01523174000 Attention: The pump installer shall provide a pump installation log to the DSD within 30 days of pump installation. MUNICIPALITY OF ANCI- ORAGE On -Site Water & Wastewater Program PO Box 196650 4700 Elmore Road Anchorage, Alaska 99519-6650 Phone: (907) 343-7904 Fax: (907) 343-7997 http:1/www.muni.org/onsite On -Site Water & Wastowater System Permit Permit Number: OSP181427 Work Type: WellSeptic Initial Tax Code Number: 01523174000 Site Legal Address: AUDUBON HILLS #1 BILK 3 LT 7 G:2739 Site Mailing Address: 12201 WAXWING CIR, Anchorage Owner: DUFFY MOLLY Design Engineer: FORGE ENGINEERING This permit is for the construction of: Effective Date Expiration Date Lot Size in Sq Ft: Total Bedrooms: 12/12/2018 12/12/2019 52695 ❑✓ Disposal Field Q Septic Tank ❑ Holding Tank. ❑ Privy Q Private 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. Provide notification by calling (907) 343-7904 (2417). 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 Special Provisions: 1. A test hole is required prior to construction of the absorption field, in location shown on site plan, to confirm separation to groundwater and impermeables, as well as to confirm the design percolation rate of the accepting soil(s). If results require a design change, construction shall stop pending On-site review and approval of a change order. Construction may proceed at your own risk prior to the 7 -day groundwater reading. Stamped and signed results shall be submitted prior to approval of the inspection report. 2. Tank inlet & outlet invert elevations of the Infiltrator septic tanks shall be installed above the seasonal high groundwater level. n 6/6/11) �e ocue S'f-4-;c }�� . (Ze(A,, "'V 6,A bao�e.d dv, 7N 3 Received By:r'� , '.°/%,l`(l ��� Zi%J Date: Issued By: 71�� Date: �o� )V ( Q 1"YAl 11 -JI N 11, CL 4 t. Community Development Departrn nt Phone: 907-34:3-7904 , k Development Services Division Fax907-343-7997 On -Site Water & Wastewater Program ON-SITE SEWER/WELL PERMIT APPLICATION Parcel I.D. 015-231-74 Property owner(s) Holly Duffy Day phone 310-2501 Mailing address 1411 W.9,.6th Avenue #E4 Anchorage, AK 99503 122 I �' Waxwing Circle Anchorage, AK 99516 Site address 9 9 Legal description (Sub'd., Block & Lot) Audubon Hills #1, Block 3, Lot 7 Legal description (Township, Range & Section) Lot Size 52,695 Sq. Ft. Number of Bedrooms Six (6) APPLICATION IS FOR: APPLICATION IS AN: TYPE OF DWELLING: (® all that apply) Absorption Field 0 Initial ® Single Family (SF) (w/wo ADU) Septic Tank ® Upgrade ❑ Duplex (D) ❑ Holding Tank ❑ Renewal ❑ Multiple Dwellings ❑ Privy ❑ (SF and/or D) Private Well Water Storage ❑ THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR: Distance: I certify that the above information is correct. I further certify that this is in accordance with applicable Municipal Codes. (Signature of property owner or authorized agent) Permit/Rush Fees:. 1 I Sq Waiver Fees: Date of Payment: i 1 1 30 I's Date of Payment: Receipt Number: 059 5 2AZ> Receipt Number: Permit No. OW i S1 `] al Waiver No. Permit App_::- :: —.,:c August 6, 2019 Municipality of Anchorage Development Services Department On -Site Water & Wastewater Program 4700 Elmore Rd Anchorage, AK 99507 Subject: Audubon Hills #1, Block 3, Lot 7 — NHN Waxwing Circle Septic System Design and Permit Application Dear On -Site Services Engineer: The owner of the lot intends to construct a 6 -bedroom home on the property. We are submitting this design and permit application for the construction of a new well and septic system to serve the house. The attached Site Plan identifies the location of the home as well as the proposed well,' septic location and alternate site. No conflicts exist between this proposed system and any wells on this or adjacent lots. Contours are shown on the site plan showing the grade and direction of flow. The drainage pattern will not be changed by the construction. The absorption system will consist of a 15' wide by 30' long absorption bed constructed over in situ silty sand material. All in place material will be excavated to the sand below. The bed will consist of Engineered Receiving Soils (ERS) consisting of 3.5' of Municipal approved sand with the absorption bed atop. Septic effluent will dissipate both vertically and horizontally. The system will pass CAT II effluent through the sand filter which will filter the effluent to CAT III standards by the time the effluent is absorbed into the receiving soil. Test Hole 3 indicates a minimum of 3' of peat from 1' to 4' below the surface. Peat is known to have an absorption rate of less than 5 minutes per inch. The bed will have a sidewall area of 180 square feet of peat between 2' and 4' below the surface in addition to the 450 square feet of surface area of the silty sand below. A percolation test of the peat will be completed prior to construction to verify our assumptions. Any variations from our design criteria will result in an immediate redesign. Test Hole 3 indicated groundwater at 5' below the surface and rose to 4.5' during the monitoring period. Other test holes on the lot close to this hole revealed water at 3.5' to 4.0' on May 15. We believe the elevation of the water in this test hole would be 35 to 4.0' based on the water monitoring in the other test holes completed on the lot. We have designed the absorption bed for a water table elevation of 3.5' below the surface. The ground surface on the lot slopes moderately to the west with no area sloping more than 10%. The new bed will be constructed parallel to the slope as much as possible. The bed will be a minimum of 50' from all wells and surface water and more than 5' from the septic tank. The alternate site is more than 10' from the primary location. Please refer to the attached design documents. If this design is followed there will be no adverse impacts to adjoining properties. Sincerely, Michael. E. Anderson, P.E. AUDUBON HILLS #1, BLOCK 3 LOT 7 CO`s LOT 6 / \ / <1 PROPOSED WE'LL \ T� v 1530 -GALLON TH#2 \ /� INFILTRATOR EPTIC TANK / C1060 GALLON / INFILTRATOR S PTIC TANK / 6- DRM HOME . \ \/1060 GALLON INFILTRATOR \ FCO RECIRCULATION TANK w/AERATION SYSTEM MH sv TH#1 \ NIT NIT ! 30' LONG x 15' WIDE x .5' EFF. \ QUANICS AEROCELL ATS -8 / 1 DEPH ABSORPTION BED \ TRICKLING FILTER a� TH3 MT SPAT / LOT 3 ALTERNATE S E / NOTE: HIGH GROUNDWATER IS FOUN ONTHI T. O LO SEPTIC TANKS WILL REQUIRE MBEDME��T T 7 ANCHORS TO PREVENT FLOT TION. SEP IC TANKS HAVE A MAXIMUM BURIAL DE TH OF 4 \ SEE ATTACHED DETAIL. ENGINEERING NOTE: ��® NO SLOPES >25% WITHIN 50' OR SURFACE WATER WITHIN 100' OF THE LEGEND ` p7OF 4C; ee0 PROPOSED SEPTIC SYSTEM CO -CLEANOUT ��P°°' 2CO - DOUBLE CLEANOUT ALL WELLS ON SURROUNDING LOTS WITH IMPACTS TO THIS FCO - FOUNDATION CLEANOUT 'r ...a9th .A.... MH - MANHOLE •° ..... °•°° PROPERTY ARE SHOWN. NO CONFLICTS WITH WELLS OR SEPTIC %....•.I.•...••.••...L...............�E SYSTEMS. MT - MONITORING TUBE fiMICHAEL E. ANDERSON t� jo SV - SEPTIC VENT ,'®� �e No. CE -4381 s ��_ 0 50 100 PV -PUMP VAULT 1� ��, s -4-1s ,.° '��4p FEET �� io"RO SSS\ ®®�®® 1"=50' CONTOURINTERVAL- 5' 1.5' 1 All tD 6" 3.5' A. D U O BLOCK DESIGN FACTORS: SYSTEM REQUIREMENTS: 900 GPD PEAK FLOW SHALLOW BED SYSTEM PERK RATE: 60 MIN/IN QUANICS TREATMENT SYSTEM APPLICATION RATE: 2 GPD/SF W/PRESSURIZED ABSORPTION BED 900 GPD / 2 GPD/SF /15' WIDE = 30 LF TRENCH REQUIRED (30 LF SPECIFIED) BOTTOM OF BED: 1.5' BELOW GRADE FLOW LINE ELEVATION: 1.0' BELOW GRADE TOP OF BED: 1.5' ABOVE GRADE M O, 2.5' i 5' 5' E 2.5' 15' TYPICAL BED SECTION (NO SCALE) NOTES: 1. GRADE AREA OVER BED TO DRAIN AWAY 2. PROVIDE 3' OF COVER OVER BED AND 4' OVER SEPTIC TANK, OR 2' WITH 2" OF INSULATION 3. CHECK GROUNDWATER AT TIME OF CONSTRUCTION. IF LEVEL IS HIGHER THAN PREVIOUSLY OBSERVED, CALL ENGINEER IMMEDIATELY 1 E H G I N E E R I N G. smirommoolNmIaW Hill 0 am oZe7 II[ft Em EYE BOLTS EVERY 2' 2' CABLE W/ TURNBUCKLE TIGHTEN OVER TANK 10'LX2.5'Wx2.5'D p CONCRETE BALLAST a,. BOUYANCY CALCULATIONS: (NEGLECTING WEIGHT OF TANK) TYPICAL SETTLEMENT TANK ai BOUYANCY FORCE ON EMPTY TANK: 1,530 GAL CAPACITY x 8.35 LB/GAL = 12,775.5 LBS (LARGEST TANK) WEIGHT OF CONCRETE BALLASTS: 8'x2.5'x2.5' x 150 LB/FT3 x 2 = 7,500 LBS WEIGHT OF SOIL ABOVE TANK: (5'x8' TANK - SMALLEST TANK) 4'x5'x8' x 130 LB/FT3 = 20,800 LBS SAFETY FACTOR: 2.2 SEPTIC TANK BALLAST (NO SCALE) NOTE: CONCEPTUAL ONLY. OTHER METHODS TO SECURE TANKS WILL BE PERMITTED AT THE DISCRETION OF THE ENGINEER. SOILS LOG AND PERCOLATION TEST 4 ENGINEERING LEGAL DESCRIPTION: AUDUBON HILLS NO. 1, BLOCK 3, LOT 7 PERFORMED FOR: PAUL DUFFY DATE: 7/24/19 PROJECT No.: PARCEL ID#: TECHNICIAN: J. MILLETTE DEPTH TEST HOLE 3 (feet) 1 2 4 5 6 r/ 8 9 10 11 12 13 14 15 16 17 18 19 V OG PT SILT w/CLAYLIKE FEATURES ML COMMENTS: Ewa WAS GROUND WATER ENCOUNTERED? YES IF YES a, WHAT DEPTH? 5' L DEPTH OF WATER AFTER MONITORING: 4.5' 0 DATE OF MONITORING: 8-1-I9 P E SITE PLAN SEE SITE PLAN Y DATE READING GROSS TIME (MINUTES) NET TIME (MINUTES) DEPTH To WATER (INCHES) NET DROP (INCHES) TEST HOLE PRESOAKED PRIOR TO TESTING: PERCOLATION RATE: (MIN/INCH) PERC. HOLE DIA. (INCHES) TEST RUN BETWEEN: FT. and FT. SEE LABORATORY MECHANICAL ANALYSIS. NORTHERN GEOTECHNICAL ENGINEERING, INC..// 'TERRA FIRMA, 'TESTING PROJECT CLIENT: PROJECT NAIvffi: PROJECT NO.: SAMPLE LOC.: NUMBER/ DEPTH: DESCRIPTION: Poo DATE RECEIVED: TESTED BY: REVIEWED BY: Sorge Engineering Audobon Dills #1 5248-19 TH#3 (B3/ L7) 19-S-1 ided sand w/ silt and 7/25/2019 EA RJPC % GRAVEL 28.0 % SAND 65.2 % SILT/CLAY 6.8 %MOIST. CONTENT 15.8 USCS SP -SM USACOE FC N/A % PASS. 0.02 mm N/A %PASS. 0.002 mm N/A UNIFORMITY COEFFICIENT (CH) 25.8 COEFFICIENT OF GRADATION (Ce) 0.8 ASTIVI D1557 (uncorrected) N/A ASTM D4718 (collected) N/A, OPTIMUM MOIST. CONTENT. (corrected) N/A PARTICLE SIZE ANALYSIS ASTM D422 / C136 U.S.5IEI U.S.S1F,Vr.HIMMS I HYDWMETEH 6 3 1.5 3!4 112318 R4 #10 #20 1140 060 #100 4200 90 80 60 50 p 40 30 ss 20 to n- 145 140 U 3 135 H z 130 C?. 125 CI 120 115 100 10 GRAVEL conuLEs I 0.1 GRAIN SIZE (mm) SAND _ rsc I Medium I Fine 0.01 0.001 SILT or CLAY MOISTURE -DENSITY RELATIONSHIP ASTM D1557 0 2 4 6 8 10 12 14 16 MOISTURE CONTENT (%) SIEVE ANALYSIS RESULT SIEVE SIZE (mm) 1111 1�1 �1■� N/A '!� I�IH■■ 111M ® 11 qll■■■ �H Holum !Il IS, 1■■■ lum !■I11■■ 1 ■ 11111■ INN III Illi ■ iC ■ In ■ ■11 �1 MES ttn■■■�0 111■ 11®�■ 1 U■ 111 ■■ 11� i1111�11 i 1IMES 111 ; ■� _ I 1 12.70 1/2" 91 9.50 3/8" 87 4.75 111x1■ ew 1■ ®� 1 iii■i 0.85 lid® Ill�lilll■■ 111�� ' ■■■ 111�� 100 10 GRAVEL conuLEs I 0.1 GRAIN SIZE (mm) SAND _ rsc I Medium I Fine 0.01 0.001 SILT or CLAY MOISTURE -DENSITY RELATIONSHIP ASTM D1557 0 2 4 6 8 10 12 14 16 MOISTURE CONTENT (%) SIEVE ANALYSIS RESULT SIEVE SIZE (mm) SIEVE SIZE (U.S.) TOTAL% SPECIFICATION PASSING (% PASSING) N/A DEGRADATION 152.40 6" PLASTICITY INDEX 76.20 3t1 NIA 38.10 1.5" 100 19.00 3/4" 97 12.70 1/2" 91 9.50 3/8" 87 4.75 #4 72 2.00 410 53 0.85 420 38 0.43 #40 Z7 0.25 x160 19 0.15 #100 12 0.075 #200 1 6.8 HYDROMETER RESULT ELAPSED DIAMETER TOTAL% TINIE(MIN) (mm) PASSING 0 0.5 1 2 4 s 15 30 60 250 1440 HYDRAULIC GOND. (ASTM D2434) N/A DEGRADATION (ATM T-313) N/A PLASTICITY INDEX ASTM 4318 NIA The testing services reported herein have been performed to recognized industry Standards, unless otherwise noted. No other warranty is made. Should engineering interpretation or opinion be required, NGF, -TFT will provide upon written request. 17301 Olive Lorre • flnchorage, Alaska 99515 • Phone: 907-314-5934 • Fax: 907-344-5993 • wwivxge-t.cou1 LEGAL DESCRIPTION: PERFORMED FOR: DATE: PARCEL ID#: SOILS LOG AND PERCOLATION TEST TECHNICIAN: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 DEPTH (feet) PROJECT No.: TEST HOLE 1 SLOPE SLOPE SITE PLAN See Site Plan DATE READING GROSS TIME(minutes)NET TIME(minutes) DEPTH toWATER NET DROP TEST HOLE PRESOAKED PRIOR TO TESTING: PERC. HOLE DIA. (INCHES)PERCOLATION RATE: (MIN/INCH) TEST RUN BETWEEN: FT. and FT. COMMENTS: (inches)(inches) AUDUBON HILLS NO. 1, BLOCK 3, LOT 3 5/9/18 J. Millette DATE OF MONITORING: WAS GROUND WATER ENCOUNTERED? DEPTH OF WATER AFTER MONITORING: IF YES @ WHAT DEPTH? NO - 4' PAUL DUFFY 1' OG SILTY SAND 5-18-18 Professional Engineers Stamp: SM PT SEE LABORATORY MECHANICAL ANALYSIS. 12-11-18 NORTHERN !! 'A ENGINEERING, TERRA ! A TESTING Laboratory Testing; Geotechnical Englneermg Instrumentation Construction Monitoring Services Thornai l Analysis PROJECT CLIENT: Forge Engineering PROJECT NAME: Waxwing Circle PROJECT NO.: 4914-18 SAMPLE LOC.: TH 1 NUMBER/ DEPTH: SA -I / 6'- 10' DESCRIPTION: Silty sand w/ gravel DATE RECEIVED: 5/16/2018 TESTED BY: JA REVIEWED BY: RJPC loo 90 80 0 70 60 50 xw 40 30 w 20 10 0 145 140 U -E� 135 F� 130 125 % GRAVEL 28.7 % SAND 49.5 %SILT/CLAY 21.8 % MOIST. CONTENT 6.4 USCS USACOE FC %PASS. 0.02 Into % PASS. 0.002 ram SM NIA NIA NIA UNIFORMITY COEFFICIENT (CH) UNKNOWN COEFFICIENT OF GRADATION (C.) UNKNOWN ASTM D1557 (uncorrected) N/A 76.20 ASTM D4718 (corrected) NIA 38.10 OPTIMUM MOIST. CONTENT. (corrected) NIA 100 PARTICLE SIZE ANALYSIS ASTM D422 / C136 U S. SIEVE OPENING III INCEM I V.S. SIEVE NHAInEks I HYDROMETER 100 10 1 0.1 0.01 0.001 GRAIN SIZE (mm) GRAVEL I SAND COEULEs I CoSILT or CLAY Come Fine Coarse Medium I'm MOISTURE -DENSITY RELATIONSHIP ASTM DI 557 120 115 1 1 1 1 1 t I I I I I I I I I 1 41 0 2 4 6 8 10 12 14 16 MOISTURE CONTENT (%) SIEVE ANALYSIS RESULT SIEVE SIZE (mm) SIEVE SIZE (U.S.) TOTAL% SPECIFICATION PASSING (% PASSING) DEGRADATION N/A 152.40 6" PLASTICITY INDEX 76.20 3" NIA 38.10 1.5" 100 19.00 314" 94 12.70 112" 87 9.50 3/8" 83 4.75 #4 71 2.00 #10 S9 0.85 #20 49 0.43 #40 42 0.25 #60 36 0.15 1 #100 30 0.075 1 #200 21.8 HYDROMETER RESULT ELAPSED DIAMETER TOTAL% TIME (MIN) (man) PASSING 0 0,5 1 2 4 8 15 30 60 250 1440 HYDRAULIC GOND. NIA (ASTM D2434) DEGRADATION N/A (ATM T-313) PLASTICITY INDEX NIA ASTM 4318 The testing services reported herein have been performed to recognized industry standards, unless otherwise noted. No other warranty is made. Should engineering interpretation or opinion be required, NGE-TFT will provide upon written request. 11301 Olive Lane - Anchorage, Alaska 99515 - Phone: 907-344-5934 • Far: 907-344-5993 • www nge-tft.conr SHEET JO~ NO. EN 1S (10/78~ .! ~_v~r~ EASEMENTS OF RECORD, OTHER THaN THOSE SHOWN ON THE RECORDED PLAT, ARE NOT SHOWN HEREON. PARCEL CONTAINS: ~.~,~ SQ. FT'. Anchoroge Recoroing District~ Alcsk~, an~ that ~his m¢~ is o true and correct representcfion of lanes octuc;- ly surveyed, tnc~ oil ~is~ces end bearings :re shO-n correctly ond t~ oll corners hOVe been sto~e~ os ~ D¢led ct Ancnoroge, mi: 2~ ~ :cy of ~'L) LY ./ ,19 DT LOUNSBURY & ASSOCIATES, Encineers, Surve?ors 15 ptanners .~ nc horace. -'",'- BY DATE ~) CHKD. BY DESCRIPTION CLIENT i SHEET OF --~- ~ NO. EN 1S (10/78l DATE CLIENT SHE ET OF -- DESCRIPTION JO~ NO. EN 1S {10/7B! Municit3alit7 ot Anci3ora~je DEPARTMENT OF HEALTH & HUMAN SERVICES 825 'L' Street. Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: /-r 7 ,~g 3 j5 1 2 3 4 5 6 7 8 10 '~1 12 13 14 15 16 17 18 19 COMMENTS ~)U~&,8ox; /_,l/j{~ Townsni0. Range, Section: SLOPE 7-/-/ WA~ GRDUNO WATER ENCOUNTER ED? /~J 0 IF 'YES. AT WHAT DEPTH? SITE PLAN PC. FORMED aY: ~' /~cF'~''--''°' ' THAT THiS TES~WAS p~r-ORM~O ,N ACCORDANCE WITH ALL STATE AND MUNICiPAl. GuIOE. UN~-.S IN EFFECT ON THIS DATE. DATE; (~/i ~'"'/~ / 72.-00~ IRe~. 4.~85~ Munic~oaiiW ot Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 'L" S~reeL Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST LEGAL OF_.SCRIPTION: L r'7 /'=j~.3 1 3 4 5 6- 7 8 9 10 11 12 13 );:PTI"4 FEET} Townsni0. Range. Section: SLOPE I t W~ GROUND WATER ENCOUNTER ED? IF 'YES. AT WHAT DEPTH? 14 15 16 17 18 lg 2O SITE Pt. AN t I '1 I I I t I I PEFICOLATION RATE ~' ~ Immum~,uxmt PEP. C HOL~ DIAMETER ~" PE.RFOR ME.D IN Munici~3alit7 ot Anct~orage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 'L' StreeL Anchorage. Alaska 99502-0650 SQILS LOG -- PERCOLATIQN TEST PERFORMED FOR: ~OV, J /'V~A ,~' LEGALDESCRIPT~ON: L. 7 ~-~ AUbL)~o/J 2 7 8 9- 10 I1 12 13 14 15 16 17 18 19 2a ~ t [{ -< Townsni0, Range, Section: SLOPE WAS GROUND WATER ENCOUNTER ED ? s L IF YES. AT WHAT O DEFTH? P E SiTE PLAN II PERCOLATION RATE __ [mmull~,nC~l PE.RC HOLE DIAMETE.R -- TF.5"T RUN BETWEEN FT AND __.Fi' ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT 72..~ IRev. August 12, 1991 Municipality of Anchorage DHHS 825 L Street Anchorage, Alaska 99501 Impact Statement For On-site Design Lot 7 Block 3 Audubon Heights Addn #1 Soils Investigation: Excavations were performed on lots 3, 7, & 8 of this subdivision earlier this summer to determine the soils conditions for on site septic systems. The results indicate that lots 3 and 8 have unacceptable soils due to either high groundwater or large volumes of peat soils. Monitoring tubes were installed on lot 7 to note any changes in groundwater since gravelly soils were found in the excavations and peat and groundwater less predominant. A curtain drain was installed as shown on the plan drawing to help ensure that the area chosen for a system on lot 7 would remain suitable since groundwater is known to be a problem in the area. Monitoring results indicate the curtain drain is working to remove groundwater upgradient from the monitoring tubes. Wells: A well installed on this lot should have no effect on neighboring wells since the majority of wells in the area are artesian. Wastewater Systems: The construction of a wastewater system on this lot should have no effect of wastewater systems on adjacent lots due to the distances to neighboring systems. Reserve Space: Due to the poor soil conditions on lots 3 and 8, (which the same buyer is also buying) these two adjacent lots should remain undeveloped for quite some time. Drainage: Most of the drainage in the area is picked up by the small drainage ditch along the property line to the south. The curtain drain picks up water upgradient to the northeast of the septic system. Overall drainage on the property move from east to west. Hopefully this meets the requirements to provide information for development of this lot. If you have any questions please contact me Yours Truly, Michael E. Anderson, P.E. ~ILT~R F'AESP. IC ,._~. .. ,/OB = ~Y C':.. FF' Development Services Department Phone. 907-343-7904 On -Site Water & Wastewater Section Fax: 907-343-7997 Certificate of On -Site Systems Approval Parcel I.D. 015-231-74 1. GENERAL INFORMATION Expiration Date: 7- ?—(,� — 7-6 2-Z Complete legal description Audubon Hills #1 Block 3 Lot 7 Location (site address) 12201 Waxwing Cir, Anchorage, AK 99516 Current property owner(s) Mailing address Paul & M Duffy Day phone 12201 Waxwing Cir, Anchorage, AK 99516 Real estate agent Alexandra Donald 2. TYPE OF DWELLING: ❑® Single Family (w/wo ADU) ❑ Duplex ❑ Multiple Dwellings (Single Family and/or Duplex) 3. NUMBER OF BEDROOMS: 6 (9v7)^ Day phone 4 i =0 i 52 4. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: Private Well Q Private Septic 0 Water Storage ❑ Holding Tank ❑ Community Well ❑ Community ❑ Public Water System ❑ Public Sewer ❑ Waiver request for: Dista Received by: Date: COSA to be released to the engineer, unless otherwise requested by the engineer. VIV COSA Fee $ Waiver Fee $ Date of Payment L Z ®ZZ Date of Payment Receipt Number 2- TD Receipt Number COSA # 6 SG 72 I i � Waiver # 5. 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 obtained from the Municipality of Anchorage files and from my investigation and inspection, the on-site 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. I acknowledge that On -Site staff may visit the site to verify the information submitted. Name of Firm Forge Engineering (M.J.) Phone (907) 522-7773 Address 1399 W. 34th Ave Suite 101, Anchorage, AK 99503 Engineer's Printed Name Benjamin Schiller, P.E. Date 4/19/22 6. DSD SIGNATURE J�- System #1 Approved for 6 bedrooms System #2 Approved for bedrooms Disapproved OF ``k • .4 1 11 j*'49TH Benjam'n&hiller �� ��� •. CE 12592 .•��` �1 ��l�: • , 4/19/22 , . •��\ Conditional approval for bedrooms, with the following stipulations: «�va�auurn�� By: t., f--:: CL"l Original Certificate Date: The Municipality of Anchorage Development Services Division (DSD) issues Certificates of On -Site Systems Approval (COSA) based only upon the representations given in paragraph 5 by an independent professional civil engineer registered in the State of Alaska. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineer's work. 7. ATTACHMENTS: COSA Checklist X Nitrate Advisory _/K�7 Septic System Advisory Arsenic Advisory Well Flow Advisory Other COSA Checklist blue sheet COSA Checklist Legal Description: Audubon Hills #1 B3 L7 Parcel ID: 015-231-74 If more than 1 septic system on lot: COSA Checklist # of Structure served by this system A. WELL DATA 0 Well log is filed with Onsite (or attached) Date drilled 1/21/2019 Total depth 145 ft Cased to 84 ft 0 Sanitary seal is functioning correctly W Wires are properly protected Casing height (above ground) +24 in. Date of flow test for COSA 4/5/22 Static water level at beginning of test 0 Comments ft. Well production at time of test 5.3+ gpm Water storage tank volume gallons Well disinfected for coliform test? ❑ Yes ❑ No ❑® Coliform bacteria is Negative Nitrate 7.69 mg/L ❑ Nitrate less than MRL (ND) Arsenic ug/L M Arsenic less than MRL (ND) Collected by Forge Engineering Date of Sample 4/6/22 B. TANK DATA C. LIFT STATION Age of tank(s) 3 years 0 Required maintenance completed Tank type/material Quanics/Plastic Age of lift station 3 years Measured operating fluid level in septic tank 45 Lift station material Plastic R Standpipes/foundation cleanout per record drawing Comments: ARM Septic Services 2/23/22 Date of pumping Isaac's Pumping 3/24/22 D. ABSORPTION FIELD DATA Absorption Bed Which system tested (date installed) 8/14/2019 ALL standpipes present per record drawing Total measured depth from grade 4.75 ft (max) Measured depth to pipe invert from grade 4.1 ft (min) ❑ N/A — pressurized field Q Monitor tubes go to bottom of effective. If not, state depth into effective Q Code -required soil cover over field ❑ System presoaked (Required if vacant for greater than 30 days prior to date of test) Gallons introduced N/A gallons Comments/Deficiencies: COSA Checklist yellow sheet Adequacy test date 4/5/22 Results 21 Pass For 6 bedrooms Fluid depth prior to test 0 in Water added 1159 gal New depth 1 in Elapsed time 1440 min Final fluid depth 0 in Absorption rate '900 gpd Any rejuvenation treatment (past 12 months) If yes, enter date E. SEPARATION DISTANCES From Private Well on Lot to: (Please enter distances if less than required or if community well) Septic Tank/Lift Station on Lot > 100' Building Foundation > 10' Community Sewer Manhole/Cleanout > 100' if No 0✓ Yes if No ft Q Yes if No ft Neighboring Tank > 100' M Yes if No ft Private Sewer/Septic Line > 25' 0✓ Yes if No ft Absorption Field on Lot > 100' 0✓ Yes if No ft Holding Tank > 100' 0✓ Yes if No ft Neighboring Absorption Fields > 100' Community Wells > 200' 0 Yes if No ft Surface Water > 100' Animal Containment > 50' 0 Yes if No ft if No 0✓ Yes if No ft Manure/Animal Excreta Storage > 100' Community Sewer Main > 75' MV Yes if No ft r,/] Yes if No ft From Septic/Holding Tank on Lot to: (Please enter distances if less than required) Building Foundations > 10' 0✓ Yes if No ft Surface Water > 100' Yes if No ft Property Line > 5' 0 Yes if No ft Wells on Adjacent Lots: Absorption Field > 5' 0✓ Yes if No ft Private Wells > 100'✓0 Yes if No ft Water Main >.10' ... _. 0 Yes. if No ft Community Wells > 200' ... _ ©✓ Yes.. if No ft Water Service Line > 10' 0✓ Yes if No ft If septic tank is under driveway comment below From Absorption Field on Lot to: (Please enter distances if less than required) Building Foundation > 10' Yes if No ft If absorption field is under driveway comment below Property Line > 10' 0 Yes if No ft Wells on Adjacent Lots: Water Main > 10' 0 Yes if No ft Private Wells > 100' El Yes if No ft Water Service Line > 10' Q Yes if No ft Community Wells > 200' 0 Yes if No ft Surface Water > 100' Q Yes if No ft F. ENGINEER'S COMMENTS G. ENGINEER'S CERTIFICATION I certify that I have determined through field inspections and review of Municipal records that the above systems are in conformance with MOA COSA guidelines in effect on this date. COSA Checklist yellow sheet OF Benjarrr5chiller •.� CE 12592 cw �� ��j��• 4/19/22 ��v�� ���FQPROFESSIONP . M[MCIPAIIITY OF ANCHORAGE ADVANCED WASTEWATER TREATMENT SYSTEM MAINTENANCE AND REPAIR AGREEMENT THIS MAINTENANCE AND REPAIR AGREEMENT, herein the "AGREEMENT" made and entered into as of this 1 Day of P'r i L,._ of 20 2-2.., by and between Daniel & Jeanne Trotter herein the "OWNER," and the Municipality of Anchorage, herein the "MUNICIPALITY", in accordance with Anchorage Municipal Code (AMC) 15.65.365. In consideration of the mutual covenants contained herein, the parties to tliis Agreement agree as follows: 1. Advanced Wastewater Treatment Systems. The Municipality grants permission to the Owner to utilize and operate an Advanced Wastewater Treatment System (AWWTS), described as Quanics syst efut located at (legal description) Audubon Hills #1, Block 3 Lot 7 2. Maintenance Repairs and Alterations. Owner is required to read, understand and initial each section) X" ; Throughout the term of this Agreement, the Owner shall enter into a service agreement with an AWWTS service and mahrtenance provider approved by the Municipality or the manufacturer's representative. The AWWTS shall be maintained in a satisfactory condition capable of performing as designed and producing treated septic effluent in accordance with the equipment's approval for operation in the Municipality. It shall be the responsibility of the Owner during the term of this Agreement to pay for all repair(s), maintenance, adjustment(s), replacement costs, and inspection costs. This includes an annual maintenance fee (typically $400 to $600). u Owner agrees that only maintenance and repair personnel approved by the Municipality �'. or the manufacturer's representative will inspect and make any necessary maintenance, repairs or permitted alterations to the system. Owner acknowledges that regular maintenance of an AWWTS reduces the potential } failure of the system, which could include sewage backup and costly repairs or drainfield replacement. (rev. 05/18/2018) Page I of 3 ' Owner acknowledges that the Municipality may request records of maintenance and t f repairs from the manufacturer's representative or maintenance provider. Owner acknowledges that the fine for failing to maintain and repair an AWWTS may be assessed in accordance with AMC 14.60.030. Owner agrees to grant the Municipal4 reasonable access to test and inspect the AWWTS. The Municipality will give at least 24-hour notice. Owner agrees Haat any sale or transfer of title of the property will not occur without a new Certificate of On -Site Systems Approval. Owner agrees that the AWWTS installation and maintenance requirements as provided by the AWWTS vendor/installer and approved by the Municipality are the governing - guidelines for the construction, maintenance and repair of the Owner's AWWTS 4'E:• p ' Owner agrees to maintain remote monitoring of the AWWTS as required by the AWWTS approval. 3. Term. The term of this Agreement shall begin on the date of approval by the Municipality to operate the installed system, or upon transfer of title, and shall continue while -the AWWTS is operational of until title is transferred. 4. Non��ai�%er. The failure of the Municipality at any time to enforce a provision of this Agreement: shall in no way constitute a waiver of the provisions, nor in any way affect the validity of the Agreement or any part hereof, or the right of the Municipality thereafter to enforce every provision. hereof. 5. Amendment. This Agreement shall only be amended by authorized representatives of the Owner and Municipality. Any attempt to amend this agreement by either an unauthorized representative or unauthorized means shall be void. 6. Jurisdiction: Choice of Law. Any civil action arising from this Agreement 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 Agreement. 7. Saeverability. Any provisions of this Agreement decreed invalid by a court of competent jurisdiction shall not invalidate the remaining provisions of the Agreement. (rev. 0511812018) Page 2 of 3 OWNER: By= _ - (signature) wD o,n \ o f (print name) STATE OF AL�SKA t--�:K6cS } )ss. Date: l `cl -,9 i'Yz- •- 23-�5 `2-9 The foregoing instrment was acknowledged before, nae this LK day of ._�,ee�eeeveaeeeos NOT Y PUBLIC aR "T�'^ �`Ci, S D�i15E VELA My Commission expires: � C? 2 � % c?Z � Notary Pubr?t, State of Texas MVCnfnrn F+r, n7i 2:: ID No.13�4I2742$ MUNICIPALITY: _(si g.ioire) (glint 11ame) Date: Title: (rev. 05/18/2018) Page 3 of 3 Maintenance Checklist. Advanced Treatment System 't c jjj� 1 Operational Checklist: Advanced Treatment System Legal Description: Street Address: G- ? ' -t t)ji o Service provided on: Date: 7^ j am' 'd Time:) o 4/,-% Service provided by: Company. AR Technician �}a� .`� � t � ; jr P � � , - ,,7 ;' � . Date of last service: _ By: You) Other. 1. Type of Aerocell Treatment System: ;t Cat II -AeroCell Treatment System ❑ Cat III,II-�-AeroCell Treatment System 2. Conditions at media filter: [-4Acceptable ❑ Unacceptable a. Evaluate presence of odor within 10 ft of perimeter of system: None ❑ Milo ❑ Strong ❑ Chemical ❑ Sour b. Source of odor, if present: 3. Manhole Risers and Pipe Caps: ,RAcceptable ❑ Unacceptable a. Cover/s intact: Yes _I No b. Method of securing cover c. Insulation present on all lids?Yes El No d. An y plumbing leaks or water intrusion:(es ! No e. Surface water/infiltration into components Yes _I No y 4. Venting/Air supply: I° Acceptable ❑ Unacceptablex� a. Air supply unit operating properly. Yes ❑ No b. Venting appears operable.I, Yes ❑I No} Cc,, GU iL,1� 5. Media surface. Acceptable ❑ Unacceptable a. Biomat on surface. ❑ Yes No b. Uniform spray pattern. IYes ❑� No d. Ponding in/on media. ❑ Yes No e. Plugging/clogging of nozzles. ❑ Yes IrZI No f. Media appears to be settling. ❑ Yes No g. Appropriate maintenance performed. X' Yes No h. Pest activity at surface. ❑ Yes 91 No 6. Effluent quality a. Effluent odor after passing through media filter: It- None ❑ Mild ❑ Strong b. Effluent color after passing through media filter Clear ❑ Brown ❑ Black 17933 Otd Glenn Highway *Chugiak, AK 99567 office/fax: (907) 688-9433 Email: ARMServicesAK@outtook.com (PAGE 1 of 3) ARM Septic Services. LLC 7. Tasks for recirculating/discharge flows: Acceptable Cl Unacceptable a. If applicable, Jandy valve functioning: ❑ Yes ❑ No Er N/A b. If applicable, Jandy Valve basin dry: D Yes ❑ No N/A c. Cleaned collection system in Aerocell unit: ❑ Yes ❑ No Not Necessary d. Design recirculation ratio 80 : 20 MT#4 Liquid Level: e. Actual recirculation ratio (Estimated): Ox No 8. Pump System: Acceptable ❑Unacceptable a. Control panel in Auto: Yes 1- No b. Timer settings IFS Panel (No Override timer):'_Yes ON:OFF: ° f Override ON: Override OFF: N/A c. Floats in correct placement: LI Yes _ No d. Floats working properly: Yes ,� No e. High grater alarm operational 1"K Yes - No f. High water alarm count: 7 g. Pump Run Counts:It_` h. Pump Run Time: t 1'-! r:i i. Float Error Counts: ' ❑ N/A j. Total Override Counts: 2- 1-1 IN N/A k. Effluent Filter serviced: Yes—No I. Tank lids _secured after inspection: Yes No m. Weep hole functional Yes _ No 9. Primary Tank: EAcceptableUnacceptable a. Sludge and scum level checked: 1IEKYes ❑ No b. Sludge/Scum levels: 1st:Lill2nd: 3rd: N/A c. Tank needs to be pumped: `es. yo d. Water softener backwash discharging on system? ❑ Yes ❑ No e, How many people live on the system?: f. Tank lids/caps secured after inspection: CaYes No g. Last Date Tank pumped: r 1` Z 4 10. Drainfield: a. Type of Drainfield (circle one): Bed. ' 5 -wide Deep Trench b. Design Effective depth: chef/feet c. Checked Liquid Levels in Drainfield: ONYes l_7 No MT#1 Liquid Level: Inches MT42 Liquid Level: Inches MT#3 Liquid Level: "g Inches MT#4 Liquid Level: Inches d. Is there any surfacing effluent?: ❑ Yes Ox No 17933 Old Glenn Highway Thugiak, AK 99567 office/fax: (907) 688-9433 Email: ARMServicesAK@outlook.com (PAGE 2 of 3) U, 11. Is the remote monitoring systern functioning? (if no, describe in comments) [Yes ? No a. Type of Monitoring system:,_. 1• [, b. Phone line working? Yes No N/A 12. Does this system receive an advisory notice/warning? (if so, describe in comments) Yes• No 13. Is the system in satisfactory condition/pass inspection? (if no, describe in comments) s �No 3 .. Other Comments: P r' i'qu 't -� i fi 1 (' C'C` Vok ' U C. rr Z C--', v w i t1_0 a'nS41-t i I Aev cu r L, re l ._ ( cz' t[[ c t " l e i CA, � 1 � � � � � � �� 14 � 3{ C., G -i. I L ,Lt Y` �Q s `�.. 1 � L �5.... l i...zf l�.S Service Provider: .''�'t -== Date: -- 17933 Otd Glenn Highway *Chugiak, AK 99567 office/fax: (907) 688-9433 Emait_• ARMServicesAK@outtook.com (PAGE 3 of 3) Nitrate Advisory Certificate of On -Site Systems Approval # OSC221156 Subdivision: Audubon Hills Block 3 Lot 7 A water sample revealed a nitrate concentration of 7.69 milligrams per liter (mg/Q. The Environmental Protection Agency (EPA) has established a maximum contaminant level (MCL) of 10.0 mg/L for public drinking water systems. While private wells are not subject to this regulation, EPA standards are based on existing health information and can therefore be used to gauge the relative quality of water from private wells. Please see the attached "Nitrate Fact Sheet" for important information regarding nitrate. This advisory must be attached to all copies of the subject Certificate of On -Site Systems Approval. From Northern Testing Laboratories, Inc. Nitrate is a negatively charged compound of nitrogen and oxygen, which is very soluble in water. Nitrate is not readily filtered or otherwise removed in the soil and can pass rapidly into ground water wells. SOURCE: Nitrate is a major component of fertilizer and wastewater. Often the nitrate is in the form of ammonia or protein first, which through contact with oxygen and certain bacteria, converts to the oxidized form known as nitrate. Sources of nitrate from wastewater include urea, ammonia cleaners, food solids, and bacterial cells. It may also result from the breakdown of organic matter buried in the soil. TOXICITY: Nitrate is generally not toxic to adults or children over the age of two or three years but is associated with a potentially fatal infant disease called methemoglobinemia. In the digestive system of young children, nitrate converts to nitrite, which can pass through the intestinal wall into the blood stream. There it combines with the hemoglobin and interferes with the ability of the blood to carry oxygen. For this reason, methemoglobinemia is referred to as "blue baby" disease. The EPA limits the concentration of nitrate in public drinking water supplies to 10 mg/L. The standard has been lowered from a previous level of 45 mg/L set by the US Public Health Service and the World Health Organization. TREATMENT: due to its solubility in water and negative ionic charge, filtration and other common home water treatment systems such as softening, or iron filtration does not readily remove nitrate. The best. method for limiting nitrate in well water is source control. This can include avoiding overdosing of fertilizer near the well and maintaining good separation distances between septic tank leach fields and the well. A special anion exchange filter that contains a media with a strong affinity for negatively charged ions in water, or by a reverse osmosis treatment system or distillation can remove nitrate. TESTING: Nitrate analysis is usually done by one of the several "wet chemical" methods using a spectrophotometer to read the final color endpoint. Specific ion electrodes also can be used to detect the activity of nitrate in water. This laboratory uses several different wet chemical methods approved under the public water supply laboratory certification program. They also have test kits available, which the laboratory uses to perform an inexpensive "screening test", and with which the homeowner can monitor the change in nitrate levels from their well. They recommend comparing the test kit results against a certified analysis from the lab occasionally to verify the accuracy of the kit. We recommend using a specially prepared bottle that has been rinsed in hydrochloric acid for collecting samples. w Ma�lmg Address P O Box 196650 * Anchorage, Alaska 99519 6650 *www muni org • V ® • o ty o O U. c • Me 0 " s L� V✓j • ` •` • • 1 41 • .• F° Its lot, m w Is 0 • 0 Zi .w...,. a qk.doop V ® • o ty o O U. • Me 0 " s L� V✓j • ` •` • • 1 41 • .• o Its lot, s 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 Parcel I.D. 015-231-74 1. GENERAL INFORMATION Expiration Date: I ^ I ?5 " 2— ©2O Complete legal description Audubon Hills #1, Block 3, Lot 7 Location (site address) 12201 Waxwing Circle Anchorage, AK Current property owner(s) Spinell Homes, Inc. Day phone (907) 344-5678 Mailing address Real estate agent 1900 W. Northern Lights Blvd #200, Anchorage, AK 99517 2. TYPE OF DWELLING: El Single Family (w/wo ADU) ❑ Duplex ❑ Multiple Dwellings (Single Family and/or Duplex) Day phone 3. NUMBER OF BEDROOMS: 6 4. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: Private Well 0 Private Septic 0 Water Storage ❑ Holding Tank ❑ Community Well ❑ Community ❑ Public Water System ❑ Public Sewer ❑ Waiver request for: Distance: Received by: Date: COSA to be released to the engineer, unless otherwise requested by the engineer. COSA Fee $ f ao �n Waiver Fee $ Date of Payment DI Date of Payment Receipt Number 0 S 445 1 / Receipt Number COSA # OSCE Ok 14 O Waiver # 6. 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 obtained from the Municipality of Anchorage files and from my investigation and inspection, the on-site 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. I acknowledge that On -Site staff may visit the site to verify the information submitted. Name of Firm Forge Engineering Phone 907-522-7773 Address 1399 W. 34th Ave Suite 101, Anchorage AK 99503 Engineer's Printed Name Michael E. Anderson, P.E. Date 10/15/19 AQp% OF ®A0®QA a 49th_ G 4� 6. DSD SIGNATURE i5. """""" "=' "'°r~i System #1 Approved for � bedrooms vA ��•���•���•�� MICHAEL E. E. ANDERSON �©��•' No. CE -4381 System #2 Approved for bedrooms ®p4�F,°•.,°•.10115/19 s Disapproved0®noE®�,®®®' Conditional approval for bedrooms, with the following stipulations: /ter By: \ �� per,. WA VA��',l AND frir PR All %t1!?)i►itlil� Original Certificate Date: 10 Wig— % The Municipality of Anchorage Development Services Division (DSD) issues Certificates of On -Site Systems Approval (COSA) based only upon the representations given in paragraph 5 by an independent professional civil engineer registered in the State of Alaska. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineer's work. 7. ATTACHMENTS: COSA Checklist Septic System Advisory Well Flow Advisory COSA Checklist blue sheet X Nitrate Advisory Arsenic Advisory Other Nie-NMAIPTIMMIM11 Legal Description: Audubon Hills #1 Block 3 Lot 7 If more than 1 septic system on lot: COSA Checklist # of A. WELL DATA ❑ Well log is filed with Onsite (or attached) Date drilled 1/21/19 Total depth 145 ft Cased to 84 ft ❑ Sanitary seal is functioning correctly ❑ Wires are properly protected Casing height (above ground) 24 in. Date of flow test for COSA 1/21/19 Static water level at beginning of test 0 ft. Comments B. TANK DATA Age of tank(s) 7123/9 years Tank type/material Plastic Measured operating fluid level in septic tank New ❑ Standpipes/foundation cleanout per record drawing Date of pumping New Installation D. ABSORPTION FIELD DATA Bed Which system tested (date installed) 8/14/19 ❑ ALL standpipes present per record drawing Total measured depth from grade 4.25 ft (max) Measured depth to pipe invert from grade 3.75 ft (min) ❑ N/A — pressurized field ❑ Monitor tubes go to bottom of effective. If not, state depth into effective ❑ Code -required soil cover over field ❑ System presoaked (Required if vacant for greater than 30 days prior to date of test) Gallons introduced N/A gallons Comments/Deficiencies: COSA Checklist yellow sheet Parcel ID: 015-231-74 Structure served by this system Well production at time of test 15 gpm Water storage tank volume N/A gallons Well disinfected for coliform test? ❑ Yes ❑ No ❑ Coliform bacteria is Negative Nitrate 7.41 mg/L ❑ Nitrate less than MRL (ND) Arsenic ug/L ❑ Arsenic less than MRL (ND) Collected by FORGE ENGINEERING Date of Sample 9/19/19 C. LIFT STATION ❑ Required maintenance completed Age of lift station 7123/19 years Lift station material Plastic Comments: New installation Adequacy test date New Installation Results ❑ Pass For bedrooms Fluid depth prior to test in Water added gal New depth in Elapsed time min Final fluid depth in Absorption rate gpd Any rejuvenation treatment (past 12 months) If yes, enter date E. SEPARATION DISTANCES From Private Well on Lot to: (Please enter distances if less than required or if community well) Septic Tank/Lift Station on Lot > 100' 4❑ >50 Community Sewer Manhole/Cleanout > 100' ❑ Yes if No ft ❑ Yes if No ft Neighboring Tank > 100' Q Yes if No ft Private Sewer/Septic Line > 25' ❑ Yes if No ft Absorption Field on Lot > 100' ❑ Yes if No >50 ft Holding Tank > 100' 4❑ Yes if No ft Neighboring Absorption Fields > 100' ft Private Wells > 100' Animal Containment > 50' 0 Yes if No ft ❑ Yes if No ft if No ft Community Wells > 200' ❑ Yes if No ft Manure/Animal Excreta Storage > 100' 0 Community Sewer Main > 75' ❑ Yes if No ft Q Yes if No ft From Septic/Holding Tank on Lot to: (Please enter distances if less than required) Building Foundations > 10' 4❑ Yes if No ft Surface Water > 100' ❑ Yes if No >50 ft Property Line > 5' ❑ Yes if No ft Wells on Adjacent Lots: Yes if No Absorption Field > 5' ❑ Yes if No ft Private Wells > 100' ❑ Yes if No >50 ft Water Main > 10' ❑ Yes if No ft Community Wells > 200' ❑ Yes if No ft Water Service Line > 10' 0 Yes if No ft If septic tank is under driveway comment below From Absorption Field on Lot to: (Please enter distances if less than required) Building Foundation > 10' ❑ Yes if No ft If absorption field is under driveway comment below Property Line > 10' Q Yes if No ft Wells on Adjacent Lots: Water Main > 10' ❑ Yes if No ft Private Wells > 100' ❑ Yes if No >50 ft Water Service Line > 10' ❑ Yes if No ft Community Wells > 200' Q Yes if No ft Surface Water > 100' ❑ Yes if No ft F. ENGINEER'S COMMENTS G. ENGINEER'S CERTIFICATION l certify that I have determined through field inspections and review of Municipal records that the above systems are in conformance with MOA COSA guidelines in effect on this date. COSA Checklist yellow sheet ... 49 th P...... + +.vmms+ i ................... I ........ m.m.¢........ + n MICHAEL E. ANDERSON U `4 No. CE -1,38141 ,•' � � qF6+.10/15/19 t�� MUNICIPALITY OF ANCHORAGE ADVANCED WASTEWATER TREATMENT SYSTEM MAINTENANCE AND REPAIR AGREEMENT THIS MAINTENANCE AND REPAIR AGREEMENT, herein the "AGREEMENT" made and entered into as of this (0) Day of DeCehr•�� of 20 t $ , by and between �t3111 1L" '1 , herein the "OWNER," and the Municipality of Anchorage, herein the "MUNICIPALITY". in accordance with Anchorage 10unicipal Code (AMC) 15.65.365. In consideration of the mutual covenants contained herein, the parties to this Agreement agree as follows: 1. Advanced Wastewater Treatment Systems. The Municipality grants permission to the Owner to utilize and operate an Advanced Wastewater Treatment System (AVI'vNrrS), described as Quanics Aerocell System located at (legal description) Audubon Hills #1, Block 3, Lot 7 2. Maintenance, Repairs and Alterations. (Owner is required to read, understand and initial each section) )Dh& Throughout the term of this Agreement. the Owner shall enter into a service agreement with an AWWTS service and maintenance provider approved by the Municipality or the manufacturer's representative. The AWWTS shall be maintained in a satisfactory condition capable of performing as designed and producing treated septic effluent in accordance with the equipment's approval for operation in the Municipality. It shall be the responsibility of the Owner during the term of this Agreement to pay for all repair(s), maintenance, adjustment(s), replacement costs, and inspection costs. This includes an annual maintenance fee (typically $400 to $600). —UA Owner agrees that only maintenance and repair personnel approved by the Municipality or the manufacturer's representative will inspect and make any necessary maintenance, repairs or permitted alterations to the system. Owner acknowledges that regular maintenance of an Aid NYTS reduces the potential failure of the system, which could include sewage backup and costly repairs or drainheld replacement. (rev. 0511$12013) Page 1 of 3 �k Owner acknowledges that the Municipality may request records of maintenance and repairs from the manufacturer's representative or maintenance provider. Owner acknowledges that the fine for failing to maintain and repair an AWWTS may be assessed in accordance with AMC 14.60.030. Wim- {� Owner agrees to grant the Municipality reasonable access to test and inspect the AW'%VTS. The Municipality will give at least 211 -hour notice. Owner agrees that any sale or transfer of title of the property will not occur without a new Certificate of On -Site Systems Approval. U1 Owner agrees that the AWXrgS installation and maintenance requirements as provided by the ANVNVTS vendor/installer and approved by the Municipality are the governing guidelines for the construction, maintenance and repair of the Owner's AWWTS. WLL Owner agrees to maintain remote monitoring of the AWWTS as required by the AWWTS approval. 3. Term. The term of this Agreement shall begin on the date of approval by the Municipality to operate the installed system, or upon transfer of title, and shall continue while the AWWTS is operational or until title is transferred. 4. Nonivaiver. The failure of the Municipality at any time to enforce a provision of this Agreement shall in no way constitute a waiver of the provisions, nor in any way affect the validity of the Agreement or any part hereof. or the right of the Municipality thereafter to enforce every provision hereof. 5. Amendment. This Agreement shall only be amended by authorized representatives of the Owner and Municipality. Any attempt to amend this agreement by either an unauthorized representative or unauthorized means shall be void. 6. Jurisdiction: Choice of Law. Any civil action arising from this Agreement 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 Agreement. 7. Severability. Any provisions of this Agreement decreed invalid by a court of competent jurisdiction shall not invalidate the remaining provisions of the Agreement. (rev. 05/1812018) Page 2 of 3 OWNER: By: {signature) Date: ir1() (print name) STATE OF ALASKA ) ) ss. TMRD JUDICIAL DISTRICT ) The foregoing instrument was acknowledged before me this Ig day of I)LgY 64' 20 tt , by jft-c �44!� - .... "RY PUBLIC FOR ALASKA V-0mmissionexpires:. ISL l Lir t q MUNICIPALITY: By: �" UmUQ (signature) \�e�fJ2CCc� CMV (print name) SL.ARIU 01i .0TARY -A- m. PUBIAG ; r ail, ,0 11110 i l �p'�� Date: Title: (rcv. 05118/2018) Pagc 3 of 3 PLAT NO. 78-295 AUDUBON HILLS ADDN. NO. 1 LOT 7, BLOCK 3 52,695 S.F. I LT I HEREBY CERTIFY THAT I HAVE SURVEYED THE -AS—BU DEPICTED ABOVE AND THAT NO GASTALD! LAND ENCROACHMENTS ENCROACHMENTS EXIST EXCEPT AS INDICATED. SURVEYING. LLC IT IS THE RESPONSIBILITY OF THE OWNER TO JEFF A. GASTALM. R.L.S. DETERMINE THE EXISTENCE OF ANY EASEMENTS. 2000 E. DOWLING RD., SURE 8 COVENANTS OR RESTRICTIONS WHICH DO NOT ANCHORAGE, ALASKA 99507 APPEAR ON THE RECORDED SUBDIVISION PLAT. PHONE 248-5454 UNDER NO CIRCUMSTANCES SHOULD ANY DATA GRID DATE HEREON BE USED FOR CONSTRICTION OR FOR SW2739 9/10/2019 ESTABLISHING BOUNDARY OR FENCE LINES. ANCHORAGE RECORDING DISTRICT. ALASKA F.S. J08 NO. NOTE: NO CORNERS SET THIS DATE 19-02 AHS173 BUILDING DETAIL SCALE: 1"-20' y®® qt Ap 19. 71 ••49TH • . Jelye,y A Gos,o1G •••� m ® o •. LS -6091 ee '. 9/10/2019 l'ltitrate Advisory Certificate of On -Site Systems Approval # OSC191497 Subdivision: Audubon Hills #1 Block 3 Lot 7 A water sample revealed a nitrate concentration of 7.14 milligrams per liter (mg/Q. The Environmental Protection Agency (EPA) has established a maximum contaminant level (MCL) of 10.0 mg/L for public drinking water systems. While private wells are not subject to this regulation, EPA standards are based on existing health information and can therefore be used to gauge the relative quality of water from private wells. Please see the attached "Nitrate Fact Sheet" for important information regarding nitrate. This advisory must be attached to all copies of the subject Certificate of On -Site Systems Approval. �� �� �B� 1 6511 111C11OC8r A asa J9S`9 663i#� ui/Uu�jlt Off! �c From Northern Testing Laboratories, Inc. Nitrate is a negatively charged compound of nitrogen and oxygen, which is very soluble in water. Nitrate is not readily filtered or otherwise removed in the soil and can pass rapidly into ground water wells. SOURCE: Nitrate is a major component of fertilizer and wastewater. Often the nitrate is in the form of ammonia or protein first, which through contact with oxygen and certain bacteria, converts to the oxidized form known as nitrate. Sources of nitrate from wastewater include urea, ammonia cleaners, food solids, and bacterial cells. It may also result from the breakdown of organic matter buried in the soil. TOXICITY: Nitrate is generally not toxic to adults or children over the age of two or three years, but is associated with a potentially fatal infant disease called methemoglobinemia. In the digestive system of young children, nitrate converts to nitrite, which can pass through the intestinal wall into the blood stream. There it combines with the hemoglobin and interferes with the ability of the blood to carry oxygen. For this reason, methemoglobinemia is referred to as "blue baby" disease. The EPA limits the concentration of nitrate in public drinking water supplies to 10 mg/L. The standard has been lowered from a previous level of 45 mg/L set by the US Public Health Service and the World Health Organization. TREATMENT: due to its solubility in water and negative ionic charge, filtration and other common home water treatment systems such as softening or iron filtration does not readily remove nitrate. The best method for limiting nitrate in well water is source control. This can include avoiding overdosing of fertilizer near the well and maintaining good separation distances between septic tank leach fields and the well. A special anion exchange filter that contains a media with a strong affinity for negatively charged ions in water, or by a reverse osmosis treatment system or distillation can remove nitrate. TESTING: Nitrate analysis is usually done by one of the several "wet chemical" methods using a spectrophotometer to read the final color endpoint. Specific ion electrodes also can be used to detect the activity of nitrate in water. This laboratory uses several different wet chemical methods approved under the public water supply laboratory certification program. They also have test kits available, which the laboratory uses to perform an inexpensive "screening test", and with which the homeowner can monitor the change in nitrate levels from their well. They recommend comparing the test kit results against a certified analysis from the lab occasionally to verify the accuracy of the kit. We recommend using a specially prepared bottle that has been rinsed in hydrochloric acid for collecting samples. ,F�111 1 ryt er"00,.�''" age; Ailsk�