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HomeMy WebLinkAboutSLEEPY HOLLOW #2 BLK 1 LT 22SLEEPY HOLLOW #2 Block 1 Lot 22 #051 -51 1 - 13 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 hftp://www.muni.org/onsite On -Site Water & Wastewater System Permit Permit Number: OSP251243 Work Type: WellSeptic Initial Tax Code Number: 05151113000 Site Legal Address: SLEEPY HOLLOW #2 BLK 1 LT 22 G:1060 Site Mailing Address: 18410 MOUNTAIN RD, Chugiak Owner: MURPHY-WELK ELLEN Design Engineer: FORGE ENGINEERING This permit is for the construction of: Effective Date Expiration Date: Lot Size in Sq Ft: Total Bedrooms: 8/12/2025 8/12/2026 44251 2 Disposal Field Q Septic Tank ❑ Holding Tank ❑ Privy Z 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:Date: ! 7 / Issued By: [A Date: r_ 3 ON -SITE SEPTICANELL PERMIT APPLICATION Parcel I.D. 051-511-13 Phone: 907-343-7904 Property owner(s) Ellen Murphy -Welk - Day phone (907) 223-1 647 Mailing address PO Box 671841 Chugiak, Alaska 99567 Site address 18412 Mountain Road Legal description Sleepy Hollow #2 Block 1 Lot 22 Number of Bedrooms 3 Engineering Firm Forge Engineering F 2� SL Not Applicable El Building Permit Number APPLICATION IS FOR: APPLICATION IS AN: (Z all that apply) Absorption Field F] Initial El Septic Tank FJ Upgrade EJ Holding Tank n Renewal ❑ Privy E] Well n. THIS APPLICATION INCLUDES A WAIVER REQUEST FOR: Distance: Permit/Rush Fees: 5-52000 Waiver Fees: Date of Payment: -7 - t '7. X- Date of Payment: Permit No. ins ppsl�1_12) Waiver No. August 12, 2025 MOA Development Services, On-Site Water & Wastewater Program 4700 Elmore Rd Anchorage, AK 99507 Subject Sleepy Hollow #2 Block 1 Lot 22 Septic system design Dear On-Site Services Engineer: The owner of the above lot intends to build a 2-bedroom home on the property, so we are submitting this permit application for the construction of a new well and 3 – bedroom septic system. The attached site plan identifies the location of the home as well as the proposed well, septic location and 8’ separation to the alternate site. No conflicts exist between this proposed system and any other well or septic system, whether on this lot or adjacent lots. The lot’s ground surface slopes steeply towards the back in certain areas. However, we’ve positioned the new trench in a flatter section, ensuring no slopes exceed 25% within 50 feet downslope of either the primary or alternate site. The site plan includes contours that illustrate the grade and direction of flow. This septic system will not be affected by stormwater drainage. We will construct the new trench as parallel to the slope 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 8’ 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 OSP251243, Curtis Townsend, 08/12/25 CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANOUT FD - FLOW DIVERTER VALVE MH - MANHOLE MT - MONITORING TUBE SV - SEPTIC VENT TH - TEST HOLE LEGEND 1"=50' SLEEPY HOLLOW , BLOCK 1 LOT 22 FEET 0 50 100Benjamin Schiller CE 12592REGISTEREDPROFESSIONA L E N GINEER 8/11/25 SEPTIC PLAN 50' LONG x 3' WIDE, 4' EFFECTIVE DEPTH ABSORPTION TRENCH 1000-GAL SEPTIC TANK 10' TELECOMMUNICATION EASEMENT 10' UTILITY EASEMENT 2- B D R M H O M E ALTERNATE SITE 2CO MT TH#1 FCO CO MT CO NEIGHBORING WELL RADIUS PROPOSED WELL WELL & SEPTIC SYSTEMS OUTSIDE VIEW WELL & SEPTIC SYSTEMS OUTSIDE VIEW WELL & SEPTIC SYSTEMS OUTSIDE VIEW WELL & SEPTIC SYSTEMS OUTSIDE VIEW 1038 1040 1040 1030 1020 1010 1000 M O U N T A I N R O A D SEPTIC SYSTEMS OUTSIDE VIEW Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251243, Curtis Townsend, 08/12/25 SLEEPY HOLLOW #2 , BLOCK 1 LOT 22 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 4" PERFORATED PVC (HOLES DOWN) DRAINFIELD ROCK 3' 4' 3' DESIGN FACTORS:SYSTEM REQUIREMENTS: 450 GPD PEAK FLOW PERK RATE: 0.13 MIN/IN APPLICATION RATE: 1.2 GPD/SF (SEE SOILS LAB ANALYSIS) DEEP TRENCH SYSTEM 1000-GAL SEPTIC TANK BOTTOM OF TRENCH:7.5' BELOW GRADE (MAX DEPTH 7.5') FLOW LINE ELEVATION: 3.5' BELOW GRADE 450 GPD / 1.2 GPD/SF / 4' DEEP / 2 SIDES = 47 LF TRENCH REQUIRED (50 LF SPECIFIED) GEOTEXTILE FABRIC 6" 5/27/25 PROVIDE ADDITIONAL FILL TO ACCOUNT FOR SETTLEMENT Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251243, Curtis Townsend, 08/12/25 LEGAL DESCRIPTION: PERFORMED FOR: DATE: PARCEL ID#: SOILS LOG AND PERCOLATION TEST 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 DEPTH (feet) TEST HOLE 1 DATE READING START TIME NET TIME (minutes) DEPTH to WATER NET DROP PERCOLATION RATE: (MIN/INCH) (inches)(inches) DATE OF MONITORING WAS WATER ENCOUNTERED? DEPTH TO WATER AFTER MONITORING IF YES @ WHAT DEPTH? 0.13 11/7 1 2 3 4 5 6SP (POORLY GRADED SAND WITH GRAVEL) Professional Engineers Stamp: NO Sleepy Hollow #2 B1 L22 11/7/24 051-511-13 Ellen Murphy-Welk 12:48 1 0 16 12:49 12:50 12:50 12:52 12:52 1' OB 0:41 Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER PERC TEST LOCATION TECHNICIAN: M. Jakubisin 7 0 16 - DRY 11/14/24 COMMENTS: SITE PLAN 6 0 16 USCS SOIL CLASSIFICATION WAS DETERMINED BY LAB TESTING 11/14/24 1 0 160:42 7 0 16 6 0 16 1 0 160:42 7 0 16 6 0 16 1 0 160:43 7 0 16 6 0 16 1 0 160:45 7 0 16 6 0 16 1 0 160:45 7 0 16 6 0 16 BOH Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251243, Curtis Townsend, 08/12/25 Report No: MAT:25-481-2Issue No: 211301 Olive Lane, Anchorage, Alaska 99515 Client: The testing services reported herein have been performed to recognized industry standards and relate only to the items inspected. Unless otherwise noted, no other warranty is made.Should engineering interpretation be required, NGE-TFT will provide upon written request. This report shall not be reproduced in full, without the prior written approval of NGE-TFT. Andrew Fortt, Engineer, P.E.Reviewed By:6/20/2025Date: Project: Northern Geotechnical Engineering, Inc. - Material Test Report Terra Firma Testing This report replaces all previous issues of this reportsigned on 06/20/2025Phone: (907) 344-5934 | www.nge-tft.com cc: Forge Engineering, Inc.7293-252025 Material Testing 92¾in 81½in 743/8in 1001½in 1006in1003in % PassingSieve Size Limits 28No.16 15No.30 7No.50 41No.8 63¼in 56No.4 5No.100 4.3No.200 Drying By:OvenDate Tested:6/20/2025 Sample Details 25-481-2Sample ID Sleepy Hollow #2, B1 L22Location6/17/2025Date Sampled Atterberg Limit: Liquid Limit:Plastic Limit:Plasticity Index:Linear Shrinkage (%): Sample Description: Grading: Not Obtainable NP (Non-Plastic) NP (Non-Plastic) 14.5061D85:5.6052D60:3.6554D50:1.3304D30:0.6004D15:0.3793D10:14.78Cu:0.83Cc: ASTM C136 Tested By:Aaron Kaiser Particle Size Distribution Page 1 of 2© 2000-2025 QESTLab by SpectraQEST.comForm No: 18909, Report No: MAT:25-481-2 mm µm 600 200 100 60 20 6 2 600 200 100 50 6"3" 1 1/2" 3/4" 1/2" 1/4" #4 #8 #16 #30 #50 #100 #200Sieve Size BOULDERS 0% COBBLES 0% GRAVEL (44%) COARSE 8.4% FINE 35.9% SAND (51%) COARSE 18.2% MEDIUM 26.3% FINE 6.9% SILT/CLAY 4% Diameter mm µm 600 200 100 60 20 6 2 600 200 100 50 6"3" 1 1/2" 3/4" 1/2" 1/4" #4 #8 #16 #30 #50 #100 #200Sieve Size BOULDERS 0% COBBLES 0% GRAVEL (44%) COARSE 8.4% FINE 35.9% SAND (51%) COARSE 18.2% MEDIUM 26.3% FINE 6.9% SILT/CLAY 4% 0 10 20 30 40 50 60 70 80 90 100 Pe r c e n t a g e P a s s i n g ( b y m a s s ) Report No: MAT:25-481-2Issue No: 211301 Olive Lane, Anchorage, Alaska 99515 Client: The testing services reported herein have been performed to recognized industry standards and relate only to the items inspected. Unless otherwise noted, no other warranty is made.Should engineering interpretation be required, NGE-TFT will provide upon written request. This report shall not be reproduced in full, without the prior written approval of NGE-TFT. Andrew Fortt, Engineer, P.E.Reviewed By:6/20/2025Date: Project: Northern Geotechnical Engineering, Inc. - Material Test Report Terra Firma Testing This report replaces all previous issues of this reportsigned on 06/20/2025Phone: (907) 344-5934 | www.nge-tft.com cc: Forge Engineering, Inc.7293-252025 Material Testing Sample Details 5144Poorly graded sand with gravel[SP]Gunner Bergstedt6/18/20255.1A 0.8314.78 25-481-2Sample ID Sleepy Hollow #2, B1 L22Location6/17/2025Date Sampled ResultCuASTM D2487 Other Test Results MethodDescription Limits CcFM ASTM C136ProcedureASTM C117Water Content (%)ASTM D2216Date TestedTested ByGroup Symbol ASTM D2487Group NameGravel (%)Sand (%)4Fines (%)6/20/2025Date Tested Not ObtainableLiquid Limit ASTM D4318 NP (Non-Plastic)Plastic Limit NP (Non-Plastic)Plasticity Index Nic CropperTested By 6/19/2025Date Tested Page 2 of 2© 2000-2025 QESTLab by SpectraQEST.comForm No: 18909, Report No: MAT:25-481-2 Comments