HomeMy WebLinkAboutTAILWIND LT 2Onsite File -15 PImart OA � � m mm D 46r-. is Municipality of Anchorage On -Site Water and Wastewater Section • (907) 343-7904 Page 1 of 3 ON -SITE WASTEWATER INSPECTION REPORT Permit Number: OSP241100 PID Number: 017-462-33 Dwelling: ■❑ Single Family (SF) ❑ with ADU ❑ Duplex (D) ❑ Two Single Family Project: ❑■ New ❑ Upgrade Name Eric Trevithick ABSORPTION FIELD ❑Deep Trench 9 Wide Trench ❑Bed El Mound Site Address 12790 Gander St ❑ Other Phone Number of Bedrooms Soil Rating Total depth from original grade (907)301-5359 5 1.2 GPD/SF 7.5 Ft. LEGAL DESCRIPTION Depth to pipe invert from original grade 5'0 Ft. Gravel depth beneath pipe 2• Ft. Subdivision Block Lot Tailwind 2 Fill added above original grade 0.0 Ft. Gravel length 80.0 Ft. Township Range Section Gravel width 5.0 Ft. Beds: Number of Lines N/A Distance between lines N/A Ft. SEPARATION DISTANCES To Septic Absorption Lift Station Holding Sewer Total absorption area Number of trenches 2 Dist. between trenches From Tank Field Tank Line 625 Ftz 7.0 Ft. Well >100' >100' N/A N/A >25 TANK❑ Septic ❑ S.T.E.P. ❑ Holding ❑ Other Manufacturer GREER Capacity 1500 Gal. Surface Water > 100' > 100' N/A N/A Material PLASTIC Number of compartments 2 Lot Line >5' >10' N/A N/A NA Foundation > 10' > 10' N/A N/A TATION Manufacturer Capacity Gal. Remarks Deep burial tank Alarm location Electric Iled by PIPE MATERIAL House to tank D3034 Tank to D3034 drainfield Installer Red Dog Excavating Drainfield D3034 CO/MTD3034 Inspector Jared Earls BENCH MARK (Assumed elevation) 100 ft Inspection 1- 4/14/25 4/15/25 Location and description dates: 2�d MAN DOOR THRESHOLD 3`d 4`h ON -SITE WATER AND WASTEWATER SECTION APPROVAL Engineer's Stamp — O \ Conditional Approval: Date �,`Q' .��t,� *49TM *��� _P....::, ........:: W, % Benjarr> n Schiller �F` • CE 12592 S qsrF 5/2/25 , •'�C�� Septic System Approved Date / ROFESSI�N Note: this approval does not include well permit requirement . (Rev 05/02/18) TAI LWI N D, LOT 2 0 PERMIT # OSP241100 L- d 1 LOT 2 (2) 40' LONG x 5' WIDE, 2.5' EFFECTIVE DEPTH ABSORPTION TRENCHES ALTERNATE SITE CAT III 25' LONG X 5" WIDE, 0.5' EFFECTIVE DEPTH TH4TRIAD) NEW 1500-GAL SEPTIC TANK w/ 20" MANWAY r- 7.0 ��01 TH�MT1 rS i i i BENCHMARK PI # 017-462-33 i I I i NEIGHBORING WELL 1 I I _ J 0 iz DRIVEWAY fr � I 5-BDRM HOME I FCO 1 DRIVEWAY EXISTING WELL r FLYAWAY AVE `• ---------------------------- --------1 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - A B Kempton Hills Subdivision Tract 1 GE ENGINEERING SEPTIC PLAN 0 40 80 FEET 1 "=40' FCO 56.9 17.2 MH 73.1 30.1 SV 75.3 33.8 2CO 77.2 46.7 FS 82.6 46.7 C01 80.7 48.1 MT1 82.7 51.2 CO2 102.2 88.0 MT2 98.5 84.0 CO3 103.0 55.3 MT3 104.1 58.6 C04 111.1 89.1 MT 4 108.8 85.4 1 Kempton Hills Subdnnsion Tract I I I LEGEND CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANOUT FS - FLOW SPLITTER VALVE MH - MANHOLE MT - MONITORING TUBE SV - SEPTIC VENT TH - TEST HOLE TAILWIND, LOT 2 PERMIT # OSP241100 95.3 •m FORGE 'V iE N G I N E E R I NG PI # 017-462-33 O� U:E 100.3 FINISH GRADE 100.3 ORIGINAL GRADE O I- U2Ei DRAINFIELD ROCK 92.8 NORTH TRENCH 92.8 - 40' GROUND WATER AT 87.3 4/2/25 81.8 99.8 FINISH GRADE 1-0 99.8 ORIGINAL GRADE 2i v 92.3 SOUTH TRENCH 92.3 40' GROUNDWATER AT 86.8 4/2/25 81.3 PROFILE AS -BUILT (NO SCALE) 95.3 94.8 1 *; 49Ti� ..�...:: ....'' . Benja 'n Schiller . 5/9/25 Il`F�PROFESSIONP`.� 0 40 80 71 Feet ZONING: R-6 SETBACKS.' 50' F. Y. 50' R. Y. 25' S. Y. a� Lot 1 — — — — — _ O 0 0 nq rn rn LOT 2 I� I 10% CEA ESMT O0 0$0osr O % 01%0,0 N8959 27"E 269.79' Flyway A venue NOTES z ASBUILT Lot 2 Tail wind Sub di vision 44,636 S F. Ordered By. Trevi Date: 4/17/25 Plot. 2023-55 1 Grid: SW2834 Drown: APH I Chk: APH Survey Certification: The Boutet Company has conducted a physical survey of the property shown hereon and certifies that the lot corners have been found or established as indicated, and that to the best of our knowledge and abilities, all dimensions have been measured true and correct. Exclusionary Note: It is the owners' responsibility to determine the existence of any easements, covenants, restrictions or right—of—way takings which do not appear on the recorded subdivision plat. It is the contractors responsibility to check top of foundation grade and building setbacks in relation to lot lines and easements. 3RD STORY DECK w Q N a 34.1 _ —'_— 5' 9 GRAVEL DRIVE CIO W _ r STONE ----- -- — �ii COLUMNS o �-0F q��soo o Q' pl 4 9 TT -y Anthony P. Hoffman • 0 Qp LS-9020 �11 -117, 25 Cap �a o 0��f essiono\ IZ—� O ry N 3RD STORY CANTILEVER Legend ® DECK ® CANTILEVER O J" REBAR SEP77C ACCESS MANHOLE OSP SEP77C PIPE ® WELL CASING coo FOUNDA RON CLEANOUT Lib--] The Boutet Company, Inc. 601 E. 57th Place102 Anchorage, AK. 9 18 Ph. 905-522-6776 Fx. 907-522-6779 License No. AECC957 infoOtbcak.com 30' MUNICIPALITY OF ANCHORAGE Development Services Department Phone: 907-343-7904 On -Site Water & Wastewater Sections Fax: 907-343-7997 Well Log Permit Number: #OSP241 16 Date of Issue: 5/30/24 Parcel Identification Number: 017-462-33 Date Started: 3/4/25 Date Completed: 3/5/25 Is well located at approved permit location? Yes ❑■ No ❑ Legal Description:Tailwind LT2 Property Owner Name & Address: Eric Trevithlck 12700 Gander St Anchoraae. AK Borehole Data: Depth (ft) Soil Type, Thickness & Water Strata From To Casing Stick Up 0 2 Brown Silt & Fine -Medium Coar-cd 2 13 Moist Fine -Coarse Gravel 13 22 Grey Silt w/Fine-Medium Gravel 22 55 Grey Silt w/Fine-Medium Gravel 18 55 57 LAT: 61.105273 LON A 49.826765 Water Sample Results: Arsenic: N D ug/L Nitrates:8.34 mg/L Total Coliform Bacteria: Negative colonies/100mL Z . I / /3,/ Z'D-L�- Method of Drilling K air rotary ❑ cable tool Casing type: A53B St® Wall Thickness: •250 inches Diameter:6 inches Depth:57 feet Liner Type: — Diameter: — inches Depth: — feet Casing stickup above ground: 2 feet Static water level (from ground level): 12 feet Pumping level: — feet after — hours pumping — rpm Recovery Rate: 1 gpm Method of Testing: Air Lift ® Open End ❑ Open Hole ❑ Screened Start feet Stopped feet ❑ Perforations Start feet Stopped feet 20 Start 2 22 Well Disinfected Upon Completion? Yes No Method of Disinfection: Tabel Comments: Well Driller: Dylan Kav ® El Company: Hefty Drillinq, Inc. Mailing Address: P.O. Box 112130 Anch., AK !J1 Attention: The well driller shall provide a well log to the On -site Water and Wastewater Section within 30 days of completion. MUNICIPALITY OF ANCHORAGE Development Services Department !� Phone: 907-343-7904 On -Site Water & Wastewater Section i Fax: 907-343-7997 Pump Installation Log Well Drilling Permit Number: OSP241100 Date of Issue: 5 _30 _24 Parcel Identification Number: 017 462 _33 Legal Description Block Lot Property Owner Name & Address: Tailwind LT2 2 Trevi Builders 12700 Gander St. Anchorage, AK Pump Installation Date: 4 -8 -25 Pump Intake Depth Below Top of Well Casing: 42 Pump Manufacturer's Name: Grundfos Pump Model: 10 SQE07-200 I Pump Size: '75 hp IPitless Adapter Burial Depth: 12 feet Pitless Adapter Manufacturer's Name: Campbell B Type Pitless Adapter Installer: Red Dog Well Disinfected Upon Completion? ® Yes ❑ No Method of Disinfection: Tabs Comments: Pump Installer Name: Dylan Kay Company: Hefty Drilling, Inc. Mailing Address: P.O.Box 112130 City: Anchorage State: AK Zip: 99511 feet Attention: The pump installer shall provide a pump installation log to On -site within 30 days of pump installation. MUNICIPALITY OF ANCHORAGE On -Site Water & Wastewater Program PO Box 196650 4700 Elmore Road Anchorage, Alaska 99519-6650 Phone: (907) 343-7904 Fax: (907) 343-7997 http://www.muni.org/onsite On -Site Water & Wastewater System Permit Permit Number: OSP241100 Effective Date: Work Type: WellSeptic Initial Expiration Date: Tax Code Number: 01746233000 Site Legal Address: TAILWIND LT 2 G:2834 Site Mailing Address: Owner: TREVITHICK ERIC Lot Size in Sq Ft Design Engineer: F C C,- C-, E.. Total Bedrooms: This permit is for the construction of: ,crtr �` •.S�f r- ■ l>clr<u•trnent 5/30/2024 5/30/2025 44636 Q Disposal Field ✓❑ 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 (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 Received By: /,J7 �; I G 4 Issued By: UI 'r Date: Date: ' p 5 ON -SITE SEWERIWELL PERMIT APPLICATION Parcel I.D. 017-462-33 Property owner(s) Eric Trevithick Day phone (907) 301-5359 Mailing address P.O. Box 230534, Anchorage, AK 99523 Site address 12700 Gander Street, Anchorage, AK 99516 Legal description (Sub'd., Block & Lot) Tailwind Lot 2 Legal description (Township, Range & Section) Lot Size 44,636 _Sq. Ft. Number of Bedrooms 5 APPLICATION IS FOR: APPLICATION IS AN: TYPE OF DWELLING: ([E all that apply) Absorption Field FX Initial FX Single Family (SF) FX (w/wo ADU) Septic Tank FX Upgrade El Duplex (D) ❑ Holding Tank F Renewal F Multiple Dwellings F Privy F (SF and/or D) Private Well FX Water Storage F 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) D Perm " Rush Fees: Waiver Fees: m' =teof'Payment: S17-6 17-4- Date of Payment: Receipt Number: Q!2592 0 Receipt Number: Permit No. ospzA i (oo Waiver No. Permit App_-'- : - , Minicipality of Anchorage On -site Water and Wastewater I: a7 MATiTi7� �,: �:� �:�, • . OSP241100 Curtis TOMSend,, 05/30/, CTE E E R I N G May 17, 2024 PO BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 (FAX) FORGECIVIL.COM MOA Development Services, On -Site Water & Wastewater Program 4700 Elmore Rd Anchorage, AK 99507 Subject: Tailwind Lot 2 —12700 Gander St Septic system design Dear On -Site Services Engineer: The owner of the above lot intends to build a 5-bedroom home on the property, so we are submitting this permit application for the construction of a new well and septic system. 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 other well or septic system, whether on this lot or adjacent lots. The ground surface on the lot fairly uniformly toward the southwest, at between a 10-15% slopes. The slopes do approach 20% in some areas, but there are there are no slopes greater than 25% within 50 feet downslope of either the primary or alternate site. Contours are shown on the site plan showing the grade and direction of flow. Stormwater drainage will not impact this septic system. The new trench will be constructed parallel to the slope as much as possible. Wells on this and adjacent lots are shown. The new system will be a minimum of 100' from all wells and surface water, and more than 5' away from the septic tank. The alternate site is located more than 6' away. Please refer to the attached test hole log, plan and profile pages for the septic design. If this design is followed, there will be no adverse impacts to adjacent properties. Sincerely, Benjamin Schiller, PE TAILWIND, LOT 2 C 0 -� I NEIGHBORING WELL Ls T { _ 1 - I LOT�2 t , THJRIAD) I 4 — NEW 1500-GALLli w ( SEPTIC TANK w/ DRIVEWAY 20" MANWAY co L„ � (2) 40' LONG,x 5' WIDE, 2.5' EFFECTIVE',.DEPTH - =_ Ft O �IC L-a ABSORPTIOWTRENCHES j 2C0 ��, 5-BD,RM HOME EXISTING WELL 0 - � MT ' FS 0. DRIVEWAY i o _ . ALTERNATE SITE CAT III 25' LONG X 5" WIDE, 0.5' EFFECTIVE DEPTH _ FLYAWAY ABBE---------------------------------------------------------- �. •::w `�1 Benja i Schiller Zr,- • CEarens92 . • i t t�►,;� PR O F E 5 S 1 ONP�'�..L' � SEPTIC PLAN 0 40 80 FEET 1 "=40' LEGEND CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANOUT FS - FLOW SPLITTER VALVE MH - MANHOLE MT - MONITORING TUBE SV - SEPTIC VENT TH - TEST HOLE TE SOILS LOG AND PERCOLATION TEST F N Q I N E E K I N 6 LEGAL DESCRIPTION: TAILWIND L2 PERFORMED FOR: RED DOG DATE: 3/26/25 PARCEL ID#: 017-462-33 DEPTH TEST HOLE 1 (feet) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 11 OB SM (TIGHT SANDY SILT w/ GRAVEL) PERC TEST LOCATION SM (SILTY SAND w/ GRAVEL) SEE LAB ANALYSIS BOTTOM OF HOLE NO WAS WATER ENCOUNTERED? - IF YES @ WHAT DEPTH? 12' 6" DEPTH TO WATER AFTER MONITORING 4 / 2 / 25 DATE OF MONITORING DATE READING NET TIME (MINUTES) DEPTH To WATER (INCHES) NET DROP (INCHES) 3/26/25 1 2 159'4 1651 6 2 2 159 159 6 3 2 159.4 1594 6 4 2 1591 1591 6 5 2 159-4 1591 6 6 2 159jw 159j 6 PERCOLATION RATE: <1 (MIN/INCH) COMMENTS: USCS SOIL CLASSIFICATION WAS VISUALLY DETERMINED SITE PLAN TECHNICIAN: JARED EARLS PROJECT CLIENT: Forge Engineering, Inc. PROJECT NAME: 2025 Material Testing PROJECT NO.: 7293-25 SAMPLE DESC.: Tailwind L2 NGE-TFT ID #: 25-S-2 CLASSIFICATION: Silty sand w/ gravel DATE RECEIVED: 4/8/2025 TESTED BY: Aaron Kaiser REVIEWED BY: Andrew Fortt %GRAVEL 17.0 USCS SM % SAND 66.2 USACOE FC N/A SILT/CLAY 16.8 % PASS. 0.02 mm N/A % MOIST. CONTENT 5.3 % PASS. 0.002 mm N/A UNIFORMITY COEFFICIENT (C) UNKNOWN COEFFICIENT OF GRADATION (Ce) UNKNOWN ASTM D1557 (uncorrected) N/A ASTM D4718 (corrected) N/A OPTIMUM MOIST. CONTENT. (corrected) N/A PARTICLE SIZE ANALYSIS ASTM D6913 / C136 / D422 Us SIEVE. OPFNINo IN INCITES 1 U.S. SIEVE NUMBERS 1 HYDROMETER 6 3 1.5 3/4 1238 N4 410 N20 #40 #60 #100 #200 100 90 80 70 60 Cn 50 40 z30 w 20 10 n 155 150 4~ ¢ 145 E- Z 140 w Q 135 Q 130 125 -- ( i i 100 10 1 0.1 0.01 0.001 GRAIN SIZE (mm) COBBLES GRAVEL SAND SILT or CLAY Coarse Fine Coarse Medium I Fine MOISTURE -DENSITY RELATIONSHIP ASTM D1557 ! -- - { -1- - -� 4-1 �— — -- d —P 0 2 4 6 8 10 12 14 16 MOISTURE CONTENT (%) SIEVE ANALYSIS RESULT SIEVE SIZE (mm) SIEVE SIZE (U.S.) TOTAL% PASSING SPECIFICATION (% PASSING) 152.40 6" 76.20 3" 38.10 1.5" 100 19.00 3/4" 94 12.70 1/2" 92 9.50 3/8" 90 4.75 #4 83 2.00 #10 73 0.85 #20 63 0.43 #40 55 0.25 #60 45 0.15 #100 31 0.075 #200 16.8 HYDROMETER RESULT ELAPSED TIME (MIN) DIAMETER (mm) TOTAL PASSING 0 _ 1 2 5 8 15 30 60 250 1440 FRACTURE COUNT N/A (ASTM D5821) Double Face DEGRADATION N/A (ATM T-313) LA ABRASION N/A (ASTM C131/C535) SP. GRAV. COARSE AGG. N/A (ASTM C 127) 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 Fax: 907-344-5993 www.nge-O.com TAILWIND, LOT 2 Cc f4j DESIGN FACTORS: SYSTEM REQUIREMENTS: 750 GPD PEAK FLOW 5-WIDE TRENCH SYSTEM PERK RATE: <1 MIN/IN 1,500-GAL SEPTIC TANK APPLICATION RATE: 1.2 GPD/SF 750 GPD / 1.2 GPD/SF / 5'WIDE * 0.64 RED FACTOR [2.5 DEEP] = 79.5'LF TRENCH REQUIRED (80 LF SPECIFIED) BOTTOM OF TRENCH: 7.5'BELOW GRADE FLOW LINE ELEVATION: &BELOW GRADE PROVIDE ADDITIONAL FILL TO ACCOUNT FOR SETTLEMENT GEOTEXTILE FABRIC 4" PERFORATED PVC DRAINFIELD ROCK TYPICAL TRENCH SECTION (NO SCALE) NOTES: 1. GRADE AREA OVER TRENCH TO DRAIN AWAY 2. PROVIDE SOF COVER OVER TRENCHES 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 or- - k-41 .......... .......... Benja • ' Schiller CE 12592 4/=5 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Section 4700 Elmore St. P.O. Box 196650 Anchorage, AK 99519-6650 www.muni.org/onsite (907)343-7904 Soils Log - Percolation Test Performed For: Land LLC Legal Description: Tailwind Subdivision, Lot 2 TH-1 1- 2- 3- 4- 5- 6- 7- 8- 9- 10- 11- 12- 13- 14- 15- 16- 17- 18- 19- 20- Organics, root mat Silty sand, brown, SM Sand w/ trace silt gray -brown, SP Silt w/ sand, tan, dense ML Municipality of Anchorage On -site Water and Wastewater REVIEWED FOR CODE COWLIANCE _.IS -.Vd,1100 Curtis Tot 0530" * J71 2 , wr G`RANr ANITHEWS P CE 13944 ,• f�'i>1►�� PROf ESSIONP�.�!AW Date Performed: 7.22.23 Township, Range, Section: Site Plan e t e WAS GROUND WATER ENCOUNTERED? No s BOH IF YES, AT WHAT DEPTH? N/A L NGWE Depth to Water After P Monitoring? NGWE E Date: 10.12.23 ■■■■■■■■■MENOMONEE MEMEMENEMEME e©©e®©EMEM ■©©©©■■■■■ ■■■■■■■■■■ ■■■■■■■■■■ ■■■■■■■■■■ M■■■■■■■■■ IReading Date Gross Time Net Time I Depth to Water I Net Drop PERCOLATION RATE <1 (minutesAnch) PERC HOLE DIAMETER 6" TEST RUN BETWEEN 2 FT AND 3 FT COMMENTS Added approx 2 gal of water in less than one min, all water absorbed in less than 4 min. Added approx 2 gal of water in less than one min, all water absorbed in less than 5 min. PERFORMED BY: Triad Engineering, LLC I Grant Mathews CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALLSTATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: 10.12.23