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Home My WebLink AboutTAILWIND LT 2Onsite File -15 PImart OA � � m mm D 46r-. is 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: F0 (Z-G E- Total Bedrooms: This permit is for the construction of: c U( t�NpavtIII U11t 5/30/2024 5/30/2025 44636 Q 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 (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: I �� Issued By: Date: Date: 5 HcI=�OOn Community Development Department Development Services Division On -Site Water & Wastewater Program Phone: 907-343-7904 Fax: 907-343-7997 ON -SITE SEWER/WELL PERMIT APPLICATION Parcel I.D. 017-462-33 Property owner(s) Eric TreyithiCk 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: (® all that apply) Absorption Field ❑x Initial 0 Single Family (SF) ❑x (w/wo ADU) Septic Tank 0 Upgrade ❑ Duplex (D) ❑ Holding Tank ❑ Renewal ElMultiple Dwellings ❑ Privy ❑ (SF and/or D) Private Well 0 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) P Perm' Fees: Waiver Fees: Payment: 517-b L+ Date of Payment: Receipt Number: — 0 S92 D Receipt Number: Permit No. 622-41(00 Waiver No. Permit App__• : ,'_..:c May 17, 2024 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 Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP241100, Curtis Townsend, 05/30/24 Depth (Feet) 1- 2- 3- 4- 5- 6- 7- 8- 9- 10- 11- 12- 13- 14- 19- 20- FT AND FT I (ENGINEER'S SEAL) Performed For: Legal Description: 15- 16- PERC HOLE DIAMETER Date Gross Time Slope Site Plan PERCOLATION RATE (minutes/inch) Net Time Depth to Water Net DropReading COMMENTS TEST RUN BETWEEN 17- 18- PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: CERTIFY THAT THIS TEST WASPERFORMED BY: (907)343-7904 Soils Log - Percolation Test Township, Range, Section: WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? S L O P E Date: Depth to Water After Monitoring? Date Performed: 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 Tailwind Subdivision, Lot 2 7.22.23 No N/A NGWE 10.12.23 <1 6" 2 3 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. Triad Engineering, LLC Grant Mathews 10.12.23 S e e a t t a c h e d s i t e p l a n Land LLC Organics, root mat Silty sand, brown, SM Sand w/ trace silt gray-brown, SP BOH NGWE Silt w/ sand, tan, dense ML TH-1 Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP241100, Curtis Townsend, 05/30/24 ALTERNATE SITE CAT III 25' LONG X 5" WIDE, 0.5' EFFECTIVE DEPTH Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER 1"=40' (2) 75' LONG x 5' WIDE, 0.5' EFFECTIVE DEPTH ABSORPTION TRENCHES NEW 1500-GAL SEPTIC TANK w/ 20" MANWAY CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANOUT FS - FLOW SPLITTER VALVE MH - MANHOLE MT - MONITORING TUBE SV - SEPTIC VENT TH - TEST HOLE LEGEND TAILWIND, LOT 2 FEET 0 40 80 5-BDRM HOME SEPTIC PLAN 5/16/24 Flyaway Avenue Ga n d e r S t r e e t 10 ' U T I L I T Y E A S E M E N T DRIVEWAY DRIVEWAY 280 290 300 FCO MT MT MT MT TH PUMP VAULT ≥6' EXISTING WELL NEIGHBORING WELL Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP241100, Curtis Townsend, 05/30/24 TAILWIND, LOT 2 TYPICAL TRENCH SECTION (NO SCALE) NOTES: 1. GRADE AREA OVER TRENCH TO DRAIN AWAY 2. PROVIDE 3' OF 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 Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER 2' 2' DESIGN FACTORS:SYSTEM REQUIREMENTS: 750 GPD PEAK FLOW PERK RATE: <1 MIN/IN APPLICATION RATE: 1.0 GPD/SF 5-WIDE TRENCH SYSTEM 1,500-GAL SEPTIC TANK w/ PUMP VAULT BOTTOM OF TRENCH: AT ORIGINAL GRADE FLOW LINE ELEVATION: 6" ABOVE GRADE 750 GPD / 1.0 GPD/SF (/ 5' WIDE * 1.0 RED FACTOR [0.5 DEEP]) = 150' LF TRENCH REQUIRED (2x 75' LF SPECIFIED) GEOTEXTILE FABRIC & 2" FOAM INSULATION 1 1 4" PVC w/ 20 - 1 8" ORIFICES EVENLY SPACED @ 7.5' OC 6" 5/16/24 5' DRAINFIELD ROCK MOA APPROVED SAND Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP241100, Curtis Townsend, 05/30/24