No preview available
HomeMy WebLinkAboutBONNIE VIEW LT 11Onsite File Bonnie View Lot 11 #017-422-20 Municipality of Anchorage On -Site Water and Wastewater Section • (907) 343-7904 Page of ON-SITE WASTEWATER INSPECTION REPORT Permit Number: OSP211228 PID Number: O 1 � _ H �a - ),D Dwelling: 0 Single Family (SF) ❑ with ADU ❑ Duplex (D) ❑ Two Single Family Project: ❑ New X Upgrade Name David Andersen ABSORPTION FIELD ❑ Deep Trench ❑■ Wide Trench ❑ Bed ❑ Mound Site Address 12720 Neher Ridge Drive ❑ Other Phone Number of Bedrooms Soil Rating depth from original grade 907-250-3741 4 0.6 GPD/SF JTotal LEGAL DESCRIPTION Depth to pipe invert from original Cgrade Ft. Gravel depth beneath pipe 2 Ft. Subdivision Block Lot Bonnie View 1 Fill added above original grade UN '•Z &OrP Gravel length 47 Ft. Township Range Section- Gravel width 5 Ft. Beds: mber of Lines NA Distance between lines Ft. SEPARATION DISTANCES To Septic Absorption Lift Station Holding Sewer Total absorption area Number of trenches Dist. between trenches From Tank Field Tank Line 1 000 Ftz 3 10 Ft. Well 115.0 127.5 NA NA NA TANK ❑■ Septic ❑ S.T.E.P. ❑ Holding ❑ Other Manufacturer Greer Capacity 1250 Gal. Surface Water NA NA NA NA Material Number of compartments Lot Line 25 11.25 NA NA NA Polyethen 2 Foundation 17.5 33.75 NA NA LIFT STATION Manufacturer Capacity Remarks NA Gal. Alarm location Electrical installed by Installer PIPE MATERIAL House to tank 3034 drainfield Tank to 3034 Northern Excavation Drainfield 3034 CO/MT3034 inspector David Andersen BENCH MARK (Assumed elevation) 100 ft Inspection 15` 10-22-21 2nd 10-25-21 Location and description 31d 10-26-21 41h Top of Septic Tank Lid ON-SITE WATER AND WASTEWATER SECTION APPROVAL Engineer's Stamp ol= Conditional Approval: Date �. A�s#t! Q ow JH* .., A, David L. Anderson _ frf �� '� CE -9350 0�r��F .t 1-23-21..• Septic System Q� Approved (l��Zai�' Date 2 3 z 1 Note: this does include OXI k%1%,%. ~ approval not well permit requirements. ,RCV UJ/U4/ 10) ,�. -Te s+ ey� 0_, am..n r t lots S uff vz�k `-re^c_V% +o`vJ Response To MOA Septic and Well Review Comments November 2, 2021 1. Submitted as -built survey to scale. 2. Submitted record drawing to scale. 3. Inspecting engineer was recorded on the inspection report. 4. The soil design septic rate was 0.6 gal/sf and was recorded. 5. Septic area was added as 100 sf. 6. Tank manufacture was Greer and was recorded. 7. All pipe installed was ASTM D3034 8. There is no available well log. Based on the information give from Denali Drilling the well is 335' deep. At about 17 feet bed rock was encountered and at about 330' a large fracture in the bed rock was encountered. Underground water flows through the opening. The well pump was set at 335'. The ground water head is at about 17 feet. 9. 2 inches of foam insulation board was placed over the tank prior to placing the cover. 10. Swing ties from point B was corrected. 11. The ground point elevations at 14 and 15 were corrected. 12. A table was placed on the record drawing listed the original ground elevations, new ground elevations, invert elevations, bottom of trench elevations, depth of trench excavations, cover depth, trench cover, and drain rock depth. Note that trenches 9-19, 10-18, 11-17, and 12-16 have 2 inches of foam insulation board prior to cover. 13. The drain rock in both inactive trenches is 2 feet and is indicated on the record drawing. 14. The ground water monitoring pipes were about 10 feet deep and were observed on 10- 10-1995. There was no water in the monitoring well. This is indicated on the drawing. 15. The depth of trench cover is listed on the record drawing. Foam insulation was placed over the trenched before soil was placed over the piping except for trench 6-8. The COSA comments were corrected. David Andersen, P.E. 11=20' 30' Swing Ties A B 1. 12.2' 1. 58.3' 2.21.5' 2.58.1' 3.24.3' 3. 59.0' 4.25.3' 4.59.4- 5. 34.9' .59.4'5.34.9' 5. 70.4' 6.34.6' 6. 71.7' 7. 75.4' 7. 97.6' 8. 79.4' 8. 99.6' 9. 78.7 9. 81.6' 10. 81.5' 10. 74.9' 11. 91.9' 11. 75.3' 12. 108.0' 12-78.7' 13.98.7' 13. 67.5' 14. 81.7' 14. 63.0' 15. 90.7' 15. 52.1' 16. 79.5' 16.35.2' 17. 58.4' 17.27.1' 18.46.6' 18. 33.5' 19.38.2' 19.43.9' 10's BONNIE VIEW SUBDIVISION SEPTIC SYSTEM LOT 11 ASBUILT 0.561 ACRES 10' Setback 7 W 1 8 - Active Septic Trench 6 •-------------------------- Trench Length = 47' • I 5 Distribution Box 4^ ? IA N I 1 B 1250 Gal M I TH-1(BOH Elev. = 94.8) Poly. Tank I Note below Risers 209.11' N 89055'20"E 209.E Note: 2 inches of insulation board was placed over the septic tank prior to cover. L0 12' N b 13.7' X12.3' A Li y M W 0 0 W M 00, U SOA O,Q oy 60. 32.0' d EXISTING BUILDING ground water was m 10 monitoring well 6.0' 13.0' 100, W CONC. 34.5' MW-21(no ound water was a observed in 10 monitoring well 10-10-1095 Relative Ground Elevations N 89-55'20"E,209.78'(REC) IA 100 09.11'(MEAS) 113. w o v 1 9 Trench Length 40' 1. Oy 01 ------------------ Relative Ground Elevations Inactive Septic Trenches 19 19. 98.69 Original Septic Trenches I Invert Relative 3 3 10 at rest. Elevations roi I ------------- Elevations 4. 100.21 __ I Trench Length 40' ot18 - - - - 0 0 O O _ 100.21 Z Z " rl l SEPTIC SYSTEM 100.21 Trench 6-8 - (6) , 14 96.23 7. ------------ - 96.56 Q9 -21S 96.21 Trench Length = ------- 47' 17 99.21 Trench 11-17 -(11) I 0 99.67 92.25 90.25 TH-2(BOH Elev. = 89.5 MW -1(n (17) N o observed' 10. 1 10-10-10 91.58 92.21 112 1' 16 11. 95.25 I----------------- -15---------- Active Septic Trench 90.13 Trench Length = 47' I 12. Risers 209.11' N 89055'20"E 209.E Note: 2 inches of insulation board was placed over the septic tank prior to cover. L0 12' N b 13.7' X12.3' A Li y M W 0 0 W M 00, U SOA O,Q oy 60. 32.0' d EXISTING BUILDING ground water was m 10 monitoring well 6.0' 13.0' 100, W CONC. 34.5' MW-21(no ound water was a observed in 10 monitoring well 10-10-1095 Relative Ground Elevations N 89-55'20"E,209.78'(REC) IA 100 09.11'(MEAS) 113. 99.67 1. 100.42 18. 97.48 Relative Ground Elevations 2. 100.21 19. 98.69 Original New Ground Invert Relative Bottom of Trench 3. 100.21 Elevations Elevations Elevations Elevations 4. 100.21 Tank Inlet 1- 100 100.42 5. 99.96 Tank Outlet 3 - 100 100.21 96.79 6. 100.21 Trench 6-8 - (6) 96.23 7. 99.46 (8) 96.56 Q9 -21S 96.21 94.23 8. 99.21 Trench 11-17 -(11) 93.50 99.67 92.25 90.25 9. 97.67 (17) 92.29 10. 96.67 Trench 12-16 - (12) 91.58 92.21 90.08 88.08 11. 95.25 (17) 90.13 12. 92.21 Inactive Trenches 13. 92.46 10-18 (10) 95.33 96.67 94.37 92.37 14. 95.58 (18) 94.41 15. 93.25 9-19 (9) 95.79 97.67 95.57 93.57 16. 93.21 (19) 95.59 17. 95.25 WELL RAP DRIVE 56.4' f 30' of Trench Trench Total Trench Drain Roel ava Cover Depth De y,�q,�,�_, AW Ayr - 2.33' 2.33' 2.98' 4.98' 2' i * 49 3.15' 3.0'+ 2" Foam 5.0' 2' 00... _ .. 00 �00 3.5' 2.13'+ 2" Foam 4.13 2' Oavid l Andersen W .'ri %G� CE -9350 g''ww 2.96" 2.30'+2" Foam 4.3' 2' `t't�;p ' .,11, 21-21. low 2.22' 2.10' + 2" Foam 4.1' 2' i I III,I I Y1i�kb' W 0 R' W W Z 30' 1 "=20' PLAT NO. P-655 BONNIE VIEW SUBDIVISION LOT 11 0.561 ACRES ,>nci 11,(MEAS) S -BU I LT GASTALDI LAND SURVEYING, LLC JEFF A. GASTALDI, R.L.S. 12000 E. DOWL ING RD., SUITE E ANCHORAGE, ALASKA 99507 PHONE 248-5454 I GRIDSW2840 I D1 /2/2021 I F.B. 2021-02 JOB NO. BVSLOT1 I 1 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. �'6*1.%0a OF 1� •A�, .sem 100 Jeffery A. Gasialdi : c . •. LS-6091AIF. �'N •. 11/2/2021 ,: `P• �••,Pap ••......•• � a5°�� r0fessionol 1 salk MUNICIPALITY OF ANCHORAGE On -Site Water & Wastewater Program PO Box 196650 4700 Elmore Road Anchorage, Alaska 99519-6650 Phone: (907) 343-7904 Fax: (907) 343-7997 http://www.muni.org/onsite On -Site Wastewater Disposal System Permit Permit Number: OSP211228 Work Type: SepticMM Upgrade Tax Code Number: 01742220000 Site Legal Address: BONNIE VIEW LT 11 G:2840 Site Mailing Address: 12720 NEHER RIDGE DR, Anchorage Owner: ANDERSEN DAVID & ANGELA Design Engineer: ANDERSEN DAVID This permit is for the construction of: Effective Date Expiration Date Lot Size in Sq Ft Total Bedrooms: ,iz'ent t Department 6/29/2021 6/29/2022 24150 Cf Disposal Field CEJ Septic Tank ❑ Holding Tank ❑ Privy ❑ Private Well ❑ Water Storage 4 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 (24/7). 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 i; Special Provisions: The inspection report & record drawings to close out this permit shall include information to close out the 1995 permit. --- t USO ciR + f er w -.L4 . — 12M C '27 /I I ZO2 l Received By: Q Date: Issued By: �� ,� a v'yc � S( Date: a oI, t M r7 Development Service,.. �s Department � p `�� � Phone 907-343-7904 On-Site Water & Wastewater Section Fax. 907-343-7997 ON-SITE SEPTIC/WELL PERMIT APPLICATION Parcel I.D. 01742220 Property owner(s) David and Angela Andersen Mailing address PO Box 111745 Anchorage Alaska, 99511 Site address 12720 Neher Ridge Drive Day phone 907-250-3741 Legal description (Sub'd., Block & Lot) Bonnie View Subdivision, Lot 11 Legal description (Township, Range & Section) Lot Size Sq. Ft. Number of Bedrooms 4 APPLICATION IS FOR: APPLICATION IS AN: TYPE OF DWELLING: (M all that apply) Absorption Field ❑X Initial 0 Single Family (SF) 0 AD U) Septic Tank © Upgrade 1-1(w/wo (D) El Holding Tank ❑ RenewalDuplex ❑ Multiple Dwellings ❑ Privy ❑ (SF and/or D) Private Well ❑ Water Storage ❑ THIS APPLICATION INCLUDES A 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: 9 J + 9 310 Waiver Fees: _ Date of Payment: 9 8/2.0,2 @ '7/1311 1 Date of Payment: Receipt Number: 9, 1 Q .26612q Receipt Number: Permit No. 0 S 10 ), I 1 q a1� Waiver No. GADevelopment Services\Building Safety\On Site Water and Wastewater\Forms\Client Forms\Permit Application.doc August 9, 2021 Revised Septic Tank Replacement and Septic Field Modifications Property Location: 12720 Neher Ridge Drive, Anchorage, Alaska 99516 Bonnie View Subdivision, Lot 11 The scope of this project is as follows: 1. Replace a leaky metal 1200 gallon septic tank that is 26 year old with a Greer HDPE septic tank with a 4 foot riser, and 2. Install a Plylok RHINO Baffled Distribution Box with 10 Holes. 3. Install a new 5' wide by 47' long trench in the reserve area. 4. Extend two existing septic trenches by 7 feet in the southern most area of the septic trenches. 5. Route new piping to the distribution box. 6. Plug septic piping to the existing northern trenches and put at rest. The existing condition of the septic system was evaluated, and the upper two northern trenches are currently full but not leaking effluent on the ground surface. The effluent was stopped for 2 days and the water level in the trenches dropped 8 inches. The bottom southern trench has no effluent flowing into it. A water test was conducted on the trench and 400 gallons of water was metered into the trench. No water was measurable after 24 hours. The second southern trench has effluent and is operating normally. No effluent was measurable after 30 hours. The septic upgrade and modifications as shown on the site plan will not impact any adjacent lots. David Andersen, P.E. 907-250-3741. b 1' 5 15 aO 30 q 115 U Existing septic trenches placed a rest. Plug flow lines at distribution box for each trenches as shown in clouded area. 111=20' 30' IExisting Monitoring Tubes (Typ) L40 '3U 8% Slope (Slope increase at property line. Septic System Up -grade Design 12720 Neher Ridge Drive Bonnie View Subdivision Lot 11 N 89°55'20"E 9nd i, -(MEAS) 20978'(REC) 209:11 (MEAS) OF AS'rr�► � ti CO 49 TH - ... ..? L � David L. Andersen a;r /f N CE•9350 .' 2��� r ��( � C�� 7 ♦t' ! i WOFE5SIVAot � l\\1 D* t w AT INVERT OF DRAIN PIPE 1' - • - • - • - • - - 1 • v • • ; i •. - - ♦ • • • • • la•� • • :%•%••X. • • • i • • • �•• L,•. • • • f • 1� • a •ol . 5' SEQTM 135 AIAJI C' VICE-) 3 C4 $ D/V1310k) J� 1 I CA ,1 Andersen Resident Existing Property Comer Septic System As -Built 12720 Neher Ridge Drive Bonnie View Subdivision Lot 11 LOT 12 209. 10' Setback 1250 GAL RESERVE AREA CLEAN OUT (TrP 13.5' TH-1 Q TH-f AC77VE��ARI. e - - 7 ' 61 I e I 27 35 I i 5 10 15 20 3U yu _ 5v W 70 S'U 4o 100 1,10 12a 130 N89 55'20'*E °" _ _ _ - - _ / Power Pole Lot 11 Buried Power Line _ _ - - - _ - - Buried Drive Way Grass Well Power. Island ° Line ,q,', Well Buried Water--_ •1 0 \.\��\\ Line 31' — Q m_ J vu 9 x 37'� Flow Splitter Zable Z-200 (Typ) 209.78' s89 393 QMW-2 100' ZLBuried Dry Sump 24" diam culvert 4' long. Approx. 3' deep. I 4 TE PL JA'NLOT 10 �r,nr�►� Uld� sU$D�t,'/Sro. AEU uN -E �, i vLffi 14DbNiov AAP FLOW SP/ftM SCALE 1"=30° NOTE_- MW -1 IS AN E YJS77NG MONITORING WELL AT A DEPIN OF 100 MW -2 IS AN EXIS77NG MONITORING WEILL AT A DAP77-I OF 9' 1 Er Pr C( FIELD LU V W W z 7RENGH GROSS SEGr10N (Typ) 733AIAlIG Ver,) 3U6DN13GJ 4,11 -It OF A4.1 �.' 01 -* 49T" * 00 /..... I/ ,! David L. Andersen a A1� CE -9350 •-.6-18-21 d �QpROFESSIW"' 4�A1'�s4q�� EMM T BONNIE VIEW O LOT 11 0.561 ACRES 209.1 VNEAS) VA GASTALDI LAND SURVEYING, LLC JEFF A. GASTALDI, R.L.S. 1000 E. DOWLING RD., SUITE 8 ANCHORAGE, ALASKA 99507 PHONE 248-5454 I GRIDSW2840 I 6/5/2021 I F.B. 2021-02 JOB NO. BVSLOTII N 8955'20"E 209.78'(REC) 209.11'(MEAS) 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. OF A4 A �� °e.ee..oy• 9.n 9 49TH ........................ ... ................. m Jeffery A. Gastaldi : o 'p• LS -6091 :AV s�P °.• 8/5/2021 ; �J ArofessionaI L� Rick Mystrom, Mayor Mtmicipality of Anchorage Department of Health and Human Services 825 "L" Street P.O. Box 196650 Anchorage, Alaska 99519-6650 343-4744 October 23, 1996 David & Angela Andersen 8210 Barnett Drive Anchorage, Alaska 99518 2465 Subject: Lot 11 Bonnie View Subdivision Permit #SW950354, PID #017-422-20 The subject permit, issued October 23, 1995 by this office for a single family well and/or on-site wastewater system, has expired as of October 23, 1996. A new permit must be obtained from this office for a well and/or on-site wastewater system NOT installed by the expiration date. If you have drilled the well, a well log must be sent to this office for documentation of the installation and to close the permit. If a licensed Professional Engineer has inspected the installation of the on-site wastewater system, the original as-built inspection report must be sent to this office for review, approval and documentation. Ail inspection reports must be submitted within 30 days of construction completion. When applying for a new permit, the fees are: $320.00 for an on-site wastewater permit; $120.00 for a well permit and $440.00 for a combined on-site wastewater and well permit. If you have any questions, please call this office at 343-4744. / Sincerely, ~ Prdgram Manager On-site Services enc: Copy of Permit MTJNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND HLTMAN SERVICES P.O. BOX 196650, 825 "L" STREET, ROOM 502 ANCHORAGE, ALASKA 99519-6650 PAGE ~ OF ON-SITE WELL AND WASTEWATER DISPOSAL SYSTEM PERMIT PERMIT NUMBER:SW950354 DESIGN ENGINEER: OWNER NAME:DAVID L. ANDERSEN OWNER ADDRESS:8210 BARNETT ANCHORAGE, AK. 99517 PARCEL ID:01742220 LEGAL DESCRIPTION: BONNIE VIEW LT 11 LOT SIZE: 24150 (SQ. FT.) NUMBER OF BEDROOMS: 4 THIS PERMIT: THIS PERMIT IS FOR THE CONSTRUCTION OF: DISPOSAL FIELD /SEPTIC TANK / WELL SYSTEM ALL CONSTRUCTION MUST BE IN ACCORDANCE WITH: DATE ISSUED:10/23/95 EXPIRATION DATE:10/23/96 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 (iSAACS0) . 3. THE ENGINEER MUST NOTIFY DHHS AT LEAST 2 HOURS PRIOR TO EACH INSPECTION. PROVIDE NOTIFICATION BY CALLING 343-4744 ( 24 HOURS ) (NOT REQUIRED FOR WELL ONLY PERMIT) 4. FROM OCTOBER 15 TO APRIL 15 A SUBSURFACE SOIL ABSORPTION SYSTEM UNDER CONSTRUCTION DURING FREEZING WEATHER MUST BE EITHER: A. OPENED AND CLOSED ON THE SAME DAY B. COVERED, SEALED AND HEATED TO PREVENT FREEZING 5. THE FOLLOWING SPECIAL PROVISIONS. SPECIAL PROVISIONS: A DHHS REPRESENTATIVE MUST INSPECT EACH OF THE PROPOSED TRENCHES PRIOR TO THE PLACEMENT OF SEWER ROCK. THE INSPECTION MUST TAKE PLACE BETWEEN THE HOURS OF 9: 00AM AND 4: 0OPM MONDAY THROUGH FRIDAY. INSPECTIONS REQUIRE A 24 HOUR NOTICE. DATE- DATE: Zabel Z200F10w Divider' Zabel Z200 D F10w Director BRAND NEW FOR 94- The Zabe[ Flow Divider replaces old fashioned distribution boxes and pipe manifolds and The Zabel Flow Director replaces expensive, old fashioned Y-valves. They are also more effective and easier to install. Ail Zabel products are manufactured ~om high quality injection molded PVC and carry Zabel's Lifetime Warranty if parts fail due to manufacturer s defect in material or workmanship. The warranty does not include replacement parts not sold by Zabel and does not include labor for removal or reinstallation. 1. The Flow Divide distributes effluent leaving the 1. septic tank by means of a patented central weir design that insures the flow is evenly divided even if the Flow Divider is not perfectly level. ,...' The inlet pipe of the Flow Divider is constructed so that effluent will flow from it and down into the effluent into two equal portions. Distributes flow better than D-boxes and mani- folds that are subject to frost heave or ground settling. Testing shows that even with a level discrepancy of 1/8" or more between the right and [eft port, the division of the flow was almost 50/50. A standard D-box or manifold distorts the flow under these same conditions. o The Flow Director is a Flow Divider with a pat- ented sleeve valve installed to distribute the efflu- ent flow to a primary field of your choice and allows the secondary field to rest until needed. The Flow Divider automatically back flows from the primary to the secondary field and does not depend on the homeowner to change the sleeve valve in the Flow Director. A standard Y-vaNe is dependent on the homeowner to change the flow direction at the proper time. Unfortunately, this usually does not happen and a problem develops such as an effluent break out resulting in ground water contamination. At the time the septic tank is normally serviced, the septic tank service company can redirect the flow allowing the primary field the opportunity to rest. · Manufactured from injection molded PVC. · Always insures an even flow. · Doesn't create solids build up. · Will not clog. · Lifetime Warranty. Laboratory Test Results using 1000 ml samples @ 3 gpm Level Right Port Left Port 1/16" Tilt Right Port Left Port 1/8" Tilt Right Port Left Port Average Distribution 50.03% 49.97% 50.2% 49.8% 51.3%. 48.7% Questions concerning Z200 Flow Divider · Zabet Z2OO-D Flow Director please call 1-800-221-5742 or Fax (502) 267-8801 for further information. Z200.O I - I 1/94 PA TRICK ROAD .. 1.16.4.9' NO 13'30"W 116.49' SO 15'$0"E NEHER RIDGE 0 61.67' 000000000000 00000000000 000000000000 00000 0000 0000 0000 000 ~0000 000 0000 000 00000 000 00000 000 ~00000 000 00000 000 000000 000 0000 000 '0000 Municipality of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L' Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: 2 3 4 5 7 9 ,3 10 ~'" ,O 11 ~3 14 16 17 19 2O DATE PERF¢ Township, Range, Section: ~(:- ~-- T'/Z/~ SLOPE SITE PLAN WAS GROUND WATER ENCOUNTERED? .A/O L IF YES, AT WHAT ~//~.~ O DEPTH? /~//'~r P E Depth to Water Alter Monitoring? M,c'~ Date: Gross Net Depth to Net Reading Date Time Time Water Drop '~. ~ o ¢,~ 3,~,,,,~ ',J I ~/>~ " I-'~/'.~ PERCOLATION RATE ~'~*~ (minutes/inch) PERC HOLE DIAMETER - Z TEST RUN BETWEEN =-~ FT AND ~'~ Z. ET COMMENTS PERFORMED BY: ~)~,-{//t_~../~,~,j'/.')E_~-YZ..~"~-~-'~ I '-~'~FY THAT THIS TEST WAS PERFORMED IN ACCORDANOE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE'. ( ¢"'~/I(~f'~ ~,~ 72-008 (Rev, 4/85) PERFORMED FOR: Municipality of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2O WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT "bEPTH:~ O ;,;~ ~ ' P Depth to Water After__ ./.. Monitoring? ~ ~/~ Date: I~ % ~ ,: ~'~ .:~ ...,.. DATE PERFORME~',. Township, Range, Section: SLOPE SITE PLAN I Gross Net Depth to Net Reading Date Time Time Water Drop lO ~;,v 3 ~1~' z3, rs', cOMMENTS ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. 72-008 (Rev. 4/85) (~ o- ~ o ~' tO ~4tro PERCOLATION RATE~ *~ (minutes/inch) PERC HOLE DIAMETER THINGS TO DO TODAY DATE 15 16 17 18 19 2O 91-009(3/76) October 5, 1995 Municipality of Anchorage Department of Health and Human Services. Anchorage, Alaska 99521 Attention: Jim William Subject: Bonnie View Subdivision Lot 11 Dear: Mr. William: The following list is in response to the comments regarding the septic design for the Bonnie View Subdivision lot 11. 1. The new site plan shows the correct location of the test pits. 2. The sit plan shows two monitoring wells that were installed prior to this investigation and are shown on the site plan. The depth of these wells are 9 to 10 feet deep and there is no water in the wells as of October 1st, 1995. 3. The existing septic field east of lot 11 is 110 feet from the proposed well on lot 11. This is shown on the site plan. 4. The proposed trenches are shown to be 1.5 feet deep. The logs indicate a SM classification. It is not an organic material. 5. A percolation test was performed at a depth of 3.5 feet which was in the layer classified as an ML in test hole 2. The percolation rate is 22.9 min/in. The trenches are placed in the soils yielding 11.7 min/in placed 2 feet above the ML layer, which is the recommended separation above a more restrictive layer. 6. The filter in the septic tank had been deleted from the plans. I~vt~ anW~a~t~ns regarding the test methods or the results, please call me. September 22, 1995 Municipality of Anchorage Department of Health and Human Services Subject: On-Site Sewer Permit Dear Sir: This package contains the following information for your review and approval of an on site septic system to be located on lot 11 of Bonnie View Subdivision: -Septic design and layout, details -Site plan -Septic calculations -Percolation tests and soil logs The drain field is designed using a 5 foot wide trench. The definition of a trench is 5 feet wide or less according to the definitions in the regulations. The trench application rate of 0.8 gpdsf was use to design the drain field based on the percolation rate obtained from the percolation test shown on the soil logs. The drain field is designed with three 50 foot trenches. The trenches will be placed at 1 1/2 to 2 feet in depth, leaving a two foot vertical separation from the bottom of the trench to the dense gravely silt as shown on the soil logs. The design specifies the use of a flow splitter basin made by Orenco Systems, Inc. which provides equal distribution to each drainfield trench. Flow to the drainfield is by gravity. All of the setback requirements are met as specified by the Department of Health. The site plan depicts adjacent properties within 200 feet of the property being considered. The septic system and proposed well are placed on the lot to minimize the impact on the adjacent lots l0 & 12. As seen on the site plan the proposed well does not interfere with any existing or proposed drainfields within 100 feet. The septic system and well locations were specifically placed on lot 11 to allow the space needed on lots 10 and 12 for a drainfield and well on each lot. For example, a drain field can be placed on lot 10 in the Southwest corner of the lot without interfering with the proposed well on lot 11. Th~' drainfield for lot 12 can be placed on the northwest corner without interference with the well setback on lot 11. Wells on lots 10 and 12 can be placed on the east side of the lots, allowing the required 100 foot setback from all proposed and existing septic systems. There appears to be no sign of surface drainage across lot 11 from any adjacent properties. There was no ground water or bedrock encountered to a depth of 10 feet. There is 8 1/2 feet of vertical separation from the bottom of the trench and investigated depth without the encountering of ground water or bedrock which meets the vertical separation requirements of the Department of Health. Insulation will be placed over the trenches and drain pipes to ensure a frost depth protection during the winter months. The proposed septic system for lot 11 Bonnie View Subdivision meets all the requirements of the Department of Health. If you have questions, please feel free to c ont ac.~l~_ ~\\, PA TRICK ROAD 116.~19' NO 15'$0'W 116.49' SO 13'$0'E NEHER RIDGE CIOWL BNIIINBBRB ALAB~ TE~TLA~ Project Name OOMPUTATION~ W.O.# Client Name Prepared by: Date Sheet Checked by: of Date Municipality of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST COMMENTS Township, Range, Section: WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Deplh to Water Monitoring? /~ I/,/-(-- Date: SLOPE SITE PLAN Gross Net Depth to Net Reading Date Time Time Water Drop PERFORMED BY: ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. 72-008 (Rev, 4/85) PERCOLATION RATE 11'7 (minutes/inch) PERC HOLE DIAMETER TEST RUN BETWEEN ~- FT AND ';~ ET OCT-- 1 6--9~ MON 9 ~- 40 ]3HHS 4 ? ~7 ~8 2O Municipality o! Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 835 %" Street, Anchorage, Alaska 9950~.-0650 SOILS LOG -- PERCOLATION TEST Township, Range, Section; SLOPE WAS GROUND WATER EN¢OUNTERIED? PLAN IF YES, AT WHAT DI"'PTH? GrcS$ NeT Depth to Not Roading Dote Time Time Water,,~ Drop PERCOLATION RA'~E ~ [mmutes/Lnch) PERC HOLE DIAMETER OOMMENT$ Municipality of Anchorage Department of Health and Human Services Subject: On-Site Sewer Permit Dear Sir: MUNICIPALITY OF ANCHORAGE: ENVIRONMENTAL ,SERVICES DIVISION AUG 1 8 1995 RECEIVED This package contains the following information for your review and approval of an on site septic system to be located on lot 11 of Bonnie View Subdivision: -Septic design and layout, details -Site plan -Septic calculations -Percolation tests and soil logs The septic system is designed to use two 5 foot trenches at a length of 59 feet. The design of these trenches meets the criteria as outlined by the Health Department for a reduction of drainfield size. The reduction factor for this design is 0.78. The trenches will be placed at 1 1/2 to 2 feet in depth, leaving a two foot vertical separation from the bottom of the trench to the dense gravelly silt as shown on the soil logs. The design specifies the use of a Zabel Z200 Flow divider which provides equal distribution to each drainfield trench. Flow to the drainfield is by gravity. All of the setback requirements are met as specified by the Department of Health. The site plan depicts adjacent properties within 200 feet of the property being considered. The septic system and proposed well are placed on the lot to minimize the impact on the adjacent lots 10 & 12. As seen on the site plan the proposed well does not interfere with any existing or proposed drainfields within 100 feet. The septic system and well locations were specifically placed on lot 11 to allow the space needed on lots 10 and 12 for a drainfield and well on each lot. For example, a drain field can be placed on lot 10 in the soutwest corner of the lot without interfering with the proposed well setback on lot 11. The drainfield for lot 12 can be placed on the northwest corner without interference with the well setback on lot 11. Wells on lots 10 and 12 can be placed on the east side of the lots, allowing the required 100 foot setback from all proposed and existing septic systems. There appears to be no sign of surface drainage across lot 11 from any adjacent properties. There was no ground water or bedrock encountered to a depth of 10 feet. There is 8 1/2 feet of vertical separation from the bottom of the trench and investigated depth without the encountering of ground water or bedrock which meets the vertical separation requirements for both ground water and bed rock of the Department of Health. Insulation will be placed over the trenches and drain pipes to ensure a frost depth protection during the winter months. If you have questions, please,~e~,~fre0: tp, c~ onfact me. Sincerely, William P. Hamm, P.E. COMPUTATIONS w.o. # ClOWI. ENI~INEEFIB AL.ABICA TEBTI.~B ProJect Name Client Name Prepared by: Date Checked by: Sheet of Date PERFORMED FOR: LEGAL D ESCR I PTION :~,~ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 COMMENTS Municipality of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST Township, Range, Section: SLOPE WAS GROUND WATER ENCOUNTERED? 7,,'zk] .F-.,z,v' $ z~ SITE PLAN S L IF YES, AT WHAT O DEPTH? p E Depth to Water MonitorinD? , _ Date: Reading Date Gross Net Depth to Net Time Time Water Drop ~ ~/~¢ ~'~'. ~" ~" ~/~ TEST RUN BETWEEN ~- PERCOLATION RATE !/, r~ (m,nutes/inch) PERC HOLE DIAMETER FT AND ~ FT PERFORMED BY: ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. 72-008 (Rev. 4/85) CERTIFY THAT THIS TEST WAS PERFORMED IN DATE: DO,VI. ENI31NEEFIB Project Name COMPUTATIONS Client Name W.O.# .._. Sheet __ of __ Date Municipality of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST LEGAL ~' DESCR,PT,ON J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 COMMENTS PERFORMED: Township, Range, Section: SLOPE SI'I~E PLAN ~" 1 s L. IF YES, AT WHAT O DEPTH? p E Depth to Water Alter Monitoring? Date: ! Gross Net Depth to Net Reading Date Time Time Water Drop ?- ~ .- ~ o' /o" &" Z ~ ' tO~ PERCOLATION RATE ;~'7~?--(minutes/,nch)PERC HOLE DIAMETER ~',r,, TEST RUN BETWEEN I FT AND ~ FT P~, ~'r ~- ~ ~) TP- ~ PERFORMED BY: ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. 72-008 (Rev. 4/85) CERTIFY THAT THIS TEST WAS PERFORMED IN DATE: ; j DOWL. ENI~INEERB wod..Ael(A 'rEs'ri. AB OOMPUTATIONS ProJect Nome Clle-t Nome W.O.# Sheet of Date 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 OSC251117 Parcel ID 017 -422-20 Legal description BONNIE VIEW LT 11 site address 12720 NEHER RIDGE DR Expiration Date: 3/3/2026 Current property owner(s) HALL ASHLYN & MATTHEW X The On-site system(s) is/are approved for 4 bedrooms Conditional approval for bedrooms, with the following stipulations: Comments or conditions: By: Original Certificate Date: 4/11/2025 Thi�Certificate of On -Site Systems Approval (COSA) is intended to demonstrate the subject sy9tem(s) is/are in substantial compliance with municipal code. The Municipality of Anchorage, Development Service Department (DSD) issues COSAs based upon representations provided by an independent professional engineer. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineer's submittal. ATTACHMENTS: COSA Checklist X Well Flow Advisory Absorption Field Advisory Nitrate Advisory Tank Age Advisory Arsenic Advisory Other Development Services Department i Phone: 907-343-7904 On -Site Water & Wastewater Sectio Fax: 907-343-7997 Certificate of On -Site Systems Approval Application 1. GENERAL INFORMATION Parcel I.D. 017-422-20 Complete legal description BONNIE VIEW LOT 11 Location (site address) 12720 NEHER RIDGE DRIVE ANCHORAGE, ALASKA 99516 Current property owner(s) MATTHEW & ASHLYN HALL — Day phone 2. ON-SITE SYSTEMS SIZED FOR 4 BEDROOMS 3. TYPE OF WATER SUPPLY: Z Private Well E] Private Well serving 2 dwelling units El Private Well serving 3+ dwelling units El Community Well or Public R Water Storage 4. TYPE OF WASTEWATER DISPOSAL: E Private Septic F] Private Septic serving 2 dwelling units r_1 Holding Tank F1 Community Septic or Public Sewer 5. SEPTIC TANK: R Steel Z Plastic R Concrete F] Fiberglass Age 4 - See advisory if steel older than 20 years 6. ABSORPTION FIELD: R AWWTS R Bed E] Deep Trench Z Wide Trench R Seepage Pit Waiver request for: Expedited review requested: n Distance: By applying for this entitlement, this property is subject to inspection by municipal On-site staff to verify the accuracy of the information provided. COSA Fee Date of Payment zz'za COSA # C" Waiver Fee $ Date of Payment Waiver # COSA Appliration.doc COSA Checklist.docx COSA Checklist Legal Description: BONNIE VIEW LOT 11 Parcel ID: 017-422-20 If more than 1 well and/or septic system on lot, provide separate checklist. Structure served by this system ____ A. WELL DATA Well log is filed with Onsite (or attached) Date drilled UNK Total depth UNK ft Cased to UNK ft Sanitary seal is functioning correctly Wires are properly protected Casing height (above ground) 33 in. Date of flow test for COSA 3/3/25 Static water level at beginning of test 62 ft. Well production at time of test 1+ gpm Water storage tank volume None gallons Well disinfected for coliform test? Yes No Coliform bacteria is Negative Nitrate 1.39 mg/L Nitrate less than MRL (ND) Arsenic ug/L Arsenic less than MRL (ND) Collected by Date 3/3/25 Comments __________________________________________________________________________________ B. TANK DATA Measured operating fluid level in septic tank 60” Date of pumping 3/3/25 Required maintenance completed, if AWWTS Comments: C. LIFT STATION Required maintenance completed Age of lift station years Lift station material Comments: D. ABSORPTION FIELD DATA Which system tested (date installed) 10/26/21 ALL standpipes present per record drawing Total measured depth from existing grade 5.3 ft (max) Measured depth to pipe invert from grade 3 ft (min) N/A – pressurized field. Per record drawings, field is insulated. Monitor tubes (MT) go to bottom of effective. (ED) If not, state depth into effective The S Trench Presoaked required if (Required if house vacant or field not used for more than 30 days prior to date of test) Gallons introduced gallons date Any rejuvenation treatment (past 12 months) N If yes, enter date Adequacy test date 3/3/25 Results Pass (Only the Southern trench tested) Fluid depth prior to test 7 in Water added 600 gal New fluid depth 12 in Elapsed time 1440 min Final fluid depth 6 in Absorption rate 600 gpd FIELD STATUS – POST RECOVERY Effective depth (per record drawings) 24 in (MOA 2’ ED) Effective depth used 6 in (Final Fluid Depth) Effective depth (ED) remaining 18 in Comments/Deficiencies: Approximate total measured depths from existing grade. Directly tested only the bottom southern trench of the 2021 3-trench system. The upper trench was mainly saturated & the middle trench pipes were buried but uncovered & found to have 1.6’ ED & was dry. The 2021 system (3 trenches) seems all connected & only a CO & MT was uncovered in the middle trench. The 1996 nonconnected inactive / resting field in the MOA docs is below grade & are present but was not located. See attached photos. COSA Checklist.docx E. SEPARATION DISTANCES From Private Well on Lot to: (Please enter distances if less than required or if community well on lot) Septic Tank/Lift Station on Lot > 100’ Yes if No ft Neighboring Tank > 100’ Yes if No ft Absorption Field on Lot > 100’ Yes if No ft Neighboring Absorption Fields > 100’ Yes if No ft Community Sewer Main > 75’ Yes if No ft Community Sewer Manhole/Cleanout > 100’ Yes if No ft Private Sewer/Septic Line > 25’ Yes if No ft Holding Tank > 100’ Yes if No ft Animal Containment > 50’ Yes if No ft Manure/Animal Excreta Storage > 100’ Yes if No ft N/A – Served by Community Well (not on lot) or Public Water From Septic/Holding Tank and Absorption Field(s) on Lot to: (Please enter distances if less than required) Building Foundations > 10’ Yes if No ft Tank to Property Line > 5’ Yes if No ft Field to Property Line > 10’ Yes if No ft Water Main > 10’ Yes if No ft Water Service Line > 10’ Yes if No ft Surface Water > 100’ Yes if No ft Wells on Adjacent Lots: Private Wells > 100’ Yes if No ft Community Wells > 200’ Yes if No ft If tank or field is under driveway comment below F. ENGINEER’S COMMENTS G. CERTIFICATION & STATEMENT OF INSPECTION BY ENGINEER As certified by my seal affixed hereto and as of the validation date shown below, I verify that my investigation, based on procedures outlined in the Certificate of On-Site Systems Approval Guidelines, indicates that the on-site water supply and/or wastewater disposal system appears to comply with applicable Municipal and State codes, ordinances, and regulations in effect at the time of installation, unless noted otherwise. Name of Firm FIRST WATER CONSULTING Phone 907-350-9566 Engineer’s Printed Name CURTIS HUFFMAN, PE Date 04/07/2025 Comments: This investigation was completed in compliance with MOA guidelines, regulations, and best industry practices / methods. The assessment of the condition of the well and septic applies only to the conditions as of the day tested. The flow and absorption rates may change due to subsurface conditions that may not be observed from the surface, changes in land use, local soil characteristics, groundwater levels that may fluctuate during the year, quality of construction (workmanship & materials), the water usage of the family being served by the system and maintenance. The operational life of all well and septic systems are subject to these various and dynamic characteristics and are outside the control of the evaluator of the well and septic system. Therefore, any or NO estimate of how long a system will function satisfactory for current or future occupants or guarantee that no unseen encroachments, deficiencies or discrepancies exist can be given by First Water Consulting & 04/07/25 20 2 1 S O U T H E R N T R E N C H 20 2 1 M I D D L E T R E N C H JU N E 1 3 , 2 0 2 4 P H O T O 19 9 6 R E S T I N G RE S E R V E 2 TR E N C H E S UP P E R 2 0 2 1 T R E N C H 20 2 1 S Y S T E M H A S 3 T R E N C H E S UP P E R , M I D D L E & S O U T H E R N L O W E R 20 2 1 3 - T R E N C H S Y S T E M UP P E R N O R T H T R E N C H 20 2 1 L O W E R SO U T H E R N TR E N C H 20 2 1 M I D D L E TR E N C H DU G U P C O & M T O F M I D D L E T R E N C H 19 9 6 S Y S T E M 2 R E S T I N G / R E S E R V E TR E N C H E S N O T C O N N E C T E D BU R I E D P I P E S MA R C H 3 , 2 0 2 5 P H O T O SE P T I C T A N K & D I S T B O X Certificate of On -Site Systems Approval Parcel I. D. 017-422-20-000 1. GENERAL INFORMATION Expiration Date: 020 Q a Complete legal description Bonnie View Subdivision Lot 11 Location (site address) 12720 Neher Ridge Drive Current property owner(s) David Andersen Day phone 907-250-3741 Mailing address PO Box 111245 Real estate agent Kameron Draper Day phone 907-301-0208 2. TYPE OF DWELLING: R Single Family (w/wo ADU) ❑ Duplex ❑ Multiple Dwellings (Single Family and/or Duplex) 3. NUMBER OF BEDROOMS: 4 4. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: Private Well 0 Private Septic FI 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 $ a 0U Waiver Fee $ Date of Payment 1 a 0 a o� l Date of Payment Receipt Number o y a 5 0 b Receipt Number COSA # C) 5 C �2 116 S ( 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 Phone 907-250-3741 Address Engineer's Printed Name David Andersen Date 11-23-21 *.'"! 1 M t �+ OF A4. 6. DSD SIGNATURE System #1 Approved for 4 bedrooms;+7m DavidL.Aadersen Ir C. C£4350 �+++ System #2 Approved for bedrooms ��#�`��F •1.1-23-21.. ����i Disapproved l # %%sslo ~~-. Conditional approval for bedrooms, with the following stipulations: By 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 Septic System Advisory Arsenic Advisory Well Flow Advisory Other COSA Checklist blue sheet Legal Description: Bonnie View Subdivision Lot 11 If more than 1 septic system on lot: COSA Checklist # A. WELL DATA ❑ Well log is filed with Onsite (or attached) Date drilled 9-1995 Total depth 335 ft Cased to 4W ft unk—d)pr n ❑ Sanitary seal is functioning correctly ❑ Wires are properly protected Casing height (above ground) 24 in. Date of flow test for COSA NA Parcel ID: 017-4222-000 of Structure served by this system Well production at time of test 1+ gpm Water storage tank volume 40 gallons Well disinfected for coliform test? ❑ Yes ❑ N ❑ Coliform bacteria is Negative Nitrate 3.35 mg/L ❑ Nitrate less than MRL (ND) Arsenic ug/L ❑ Arsenic less than MRL (ND) Collected by Alaska Testlab Date of Sample 11-9-21 Static water level at beginning of test 17 ft. Comments No well log avaliable. Flow Test performed October 1995 B. TANK DATA Age of tank(s) New years Tank type/material Poly Measured operating fluid level in septic tank New ❑ Standpipes/foundation cleanout per record drawing Date of pumping New D. ABSORPTION FIELD DATA Which system tested (date installed) New ❑ ALL standpipes present per record drawing Total measured depth from grade 5.0' ft (max) Measured depth to pipe invert from grade 2.1 ft (min) ❑ N/A — pressurized field ❑ Monitor tubes go to bottom of effective. If not, state depth into effective C. LIFT STATION ❑ Required maintenance completed Age of lift station years Lift station material Comments: Adequacy test date New Results EJPass For bedrooms Fluid depth prior to test in Water added gal New depth in Elapsed time min ❑ Code -required soil cover over field Final fluid depth in ❑ System presoaked Absorption rate gpd (Required if vacant for greater than 30 days prior to Any rejuvenation treatment (past 12 months) date of test) Gallons introduced gallons If yes, enter date Comments/Deficiencies: Four Trenches were constructed with 2" of board foam insulation before cover was placed. The 5th trench has T of fill cover. COSA Checklist yellow sheet 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' M✓ Yes Community Sewer Manhole/Cleanout > 100' Q✓ Yes if No ft M Yes if No ft Neighboring Tank > 100' F71 Yes if No ft Private Sewer/Septic Line > 25' Q Yes if No ft Absorption Field on Lot? 100' [Z] Yes if No ft Holding Tank > 100' Yes if No ft Neighboring Absorption Fields > 100' 0✓ Yes if No ft Water Main > 10' Animal Containment > 50' 0 Yes if No ft M Yes if No ft F✓ Yes if No ft Water Service Line > 10' M Yes if No Manure/Animal Excreta Storage > 100' If septic tank is under driveway comment below Community Sewer Main > 75' ✓� Yes if No ft 0 Yes if No ft From Septic/Holding Tank on Lot to: (Please enter distances if less than required) Building Foundations > 10' M✓ Yes if No ft Surface Water > 100' Q✓ Yes if No ft Property Line > 5' ✓] Yes if No ft Wells on Adjacent Lots: Q Absorption Field > 5' if No Yes if No ft Private Wells > 100' 0✓ Yes if No ft Water Main > 10' ft Yes if No ft Community Wells > 200' F✓ Yes if No ft Water Service Line > 10' M 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' El Yes if No ft If absorption field is under driveway comment below Property Line > 10' M Yes if No ft Wells on Adjacent Lots: Water Main > 10' Q Yes if No ft Private Wells > 100' U✓ Yes if No ft Water Service Line > 10' Yes if No ft Community Wells > 200' Q Yes if No ft Surface Water > 100' ✓0 Yes if No ft F. ENGINEER'S COMMENTS G. ENGINEER'S CERTIFICATION l certify that l 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 ,�,�►``4N~OF A% t t �t •. .� ......... L, t� 00 p David L. Andersen ct,� CE -9150 .) l: 23-2t.,'`�,� dtt t r:titis0►�,��•. SGS Ref.# Printed Date/Time 11/17/2021 16:56 Collected Date/Time 11/09/2021 16:20 Received Date/Time 11/09/2021 16:57 Technical Director Stephen C. Ede 1217412001 Client Name Residential Testing - Cash Account Project Name/# 12720 Neher Ridge Dr Client Sample ID 12720 Neher Ridge Matrix Drinking Water Sample Remarks: Allowable Prep Analysis Parameter Results LOQ Units Method Container ID Limits Date Date Init Microbiology Laboratory E. Coli Negative 1 100mL SM21 9223B Total Coliform Negative 1 100ml, SM21 9223B A 11/09/21 M.A A 11/09/21 M.A 2 of 5 n SGS Ref.# 1217643001 Client Name Residential Testing - Cash Account Project Name/9 D. Andersen -12720 Neher Ridge Client Sample ID 12720 #1 92 Matrix Drinking Water Sample Remarks: Printed Date/Time Collected Date/Time Received Date/7'ime Technical Director 12/02/2021 16:50 11/23/2021 13:49 11/23/2021 14:18 Stephen C. Ede Allowable Prep Analysis Parameter Results LOQ Units Method Container 1D Limits Date Date [nit Metals by ICP/MS Arsenic ND 5.00 Waters Department Total Nitrate/Nitrite-N 3.35 0.200 ug/L EI'200.8 A (<10) mg/L SM21450ONO3-F B (<10) 11/24/21 11/29/21 DSD 11/24/21 EBI-! 2 of 6