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HomeMy WebLinkAboutTHE CASCADES BLK 1 LT 4#'078 - 3 21 - 04 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: OSP251275 Work Type: WellSeptic Initial Tax Code Number: 07832104000 Site Legal Address: THE CASCADES BLK 1 LT 4 G:0958 Site Mailing Address: Owner: JOHNSON SHON R & SARAH J Design Engineer: FORGE ENGINEERING This permit is for the construction of: Effective Date Expiration Date: v r, r I)�118I�Tttttrtttf Lot Size in Sq Ft Total Bedrooms: 8/21 /2025 8/21 /2026 103845 2 Disposal Field 2 Septic Tank ❑ Holding Tank ❑ Privy 2 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 3 f c r Received By: Date: 2 i 2,0 - Issued By: Date: 5 MUNICIPALITY OF Development Services Department On -Site Water & Wastewater Section ON -SITE SEPTIC/WELL PERMIT APPLICATION Parcel I.D. 078-321-04 Phone: 907-343-7904 Property owner(s) Shon & Sarah Johnson Day phone (907) 444-3840 Mailing address 7025 Madelynne Way, Anchorage, AK 99504 Site address NHN West River Dr Legal description The Cascades, Block 1 Lot 4 Number of Bedrooms 3 Engineering Firm Forge Engineering Building Permit Number 2- Not Applicable RN APPLICATION IS FOR: APPLICATION IS AN: (Z all that apply) Absorption Field E Initial E Septic Tank El Upgrade F] Holding Tank 1-1 Renewal ❑ Privy 0 Well ED THIS APPLICATION INCLUDES A WAIVER REQUEST FOR: Distance: Permit/Rush Fees: 49900 Waiver Fees: Date of Payment: 11 las— Date of Payment: Permit No. .S ( 1z �_ S Waiver No. July 28, 2025 MOA Development Services, On-Site Water & Wastewater Program 4700 Elmore Rd Anchorage, AK 99507 Subject: The Cascades Block 1 Lot 4 Septic system design Dear On-Site Services Engineer: This letter accompanies out permit application for the construction of a new well and septic system on the lot mentioned above. The property owner plans to build a three-bedroom home, and this application supports that development. The attached site plan details the proposed locations for the home, well, primary septic system, and an alternate septic site. We’ve confirmed that this proposed system does not conflict with any existing well or septic systems on this lost or adjacent properties. Regarding the site’s topography, the ground slopes steeply towards the road. However, we’ve identified a flatter area for the new septic system. There are no slopes greater then 25% within 50 feet downslope of either the primary or alternate septic sites. The site plan includes contours to illustrate the fact and direction of flow, and we have ensured that stormwater drainage will not impact this septic system. The new trench will be constructed as parallel to the slope as feasible. The site plan also shows all wells on this and adjacent lots. The new system will be situated a minimum of 100 feet from all wells and surface water, and more than 5 feet form the septic tank. 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 OSP251275, Curtis Townsend, 08/21/25 Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER 1"=30' ADVANTEX PUMP VAULT 24" CMP PIPE w/ PUMP SETUP CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANOUT FS - FLOW SPLITTER VALVE MH - MANHOLE MT - MONITORING TUBE SV - SEPTIC VENT TH - TEST HOLE LEGEND THE CASCADES, BLOCK 1 LOT 4 FEET 0 30 60 SEPTIC PLAN 7/24/25 1890 1885 1880 1875 1870 1865 1860 1855 1850 1845 1840 1835 1830 TH#1 20' LONG x 5' WIDE, 6" EFFECTIVE DEPTH ABSORPTION TRENCH 1500-GAL ADVANTEX TANK w/ AX20 POD 3 - B D R M H O M E UNDEVELOPED PROPOSED WELL ALTERNATE SITE 1 0 ' U T I L I T Y E A S E M E N T MT MT SEPTIC SYSTEM GREATER THEN 100' FROM PROPERTY LINE W E S T R I V E R D R I V E Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251275, Curtis Townsend, 08/21/25 THE CASCADES, BLOCK 1 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 DESIGN FACTORS:SYSTEM REQUIREMENTS: 450 GPD PEAK FLOW PERK RATE: 0.36 MIN/IN APPLICATION RATE: 6.0 GPD/SF 5' WIDE TRENCH SYSTEM 1500 GAL ADVANTEX TANK BOTTOM OF TRENCH: 1' ABOVE GRADE FLOW LINE ELEVATION: 1.5' ABOVE GRADE 450 GPD / 6.0 GPD/SF / 5' WIDE * 1.0 RED FACTOR [0.5' DEEP] = 15 LF TRENCH REQUIRED (20 LF SPECIFIED) 7/24/25 DRAINFIELD ROCK 2' 1' GEOTEXTILE FABRIC & 2" FOAM INSULATION 11 4" PVC w/ 20 - 1 8" ORIFICES EVENLY SPACED @ 1.25' OC 6" PROVIDE ADDITIONAL FILL TO ACCOUNT FOR SETTLEMENT 5' 6" 1' 2:1 SLOPE W/ JUTE MESH MOA APPROVED SAND Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251275, Curtis Townsend, 08/21/25 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 NET TIME (minutes) DEPTH to WATER NET DROP PERCOLATION RATE: (MIN/INCH) (inches)(inches) DATE OF MONITORING DEPTH TO WATER AFTER MONITORING 0.36 7/14/25 1 2 3 4 5 6 GW-GM (WELL-GRADED GRAVEL w/ SILT AND SAND) DETERMINED BY SOILS ANALYSIS. Professional Engineers Stamp: THE CASCADES BLOCK 1 LOT 4 7/14/25 078-321-04 SHON JOHNSON 93 8 16 1' OB 2:00 Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER PERC TEST LOCATION TECHNICIAN: Jared Earls 99 8 16 5' 7/21/25 COMMENTS: SITE PLAN 6 USCS SOIL CLASSIFICATION WAS VISUALLY DETERMINED EXCEPT WHERE NOTED 7/24/25 MOISTURE NOTED AT TIME OF DIGGING?YES 93 8 162:09 99 8 16 6 93 8 162:12 99 8 16 6 93 8 162:13 99 8 16 6 93 8 162:13 99 8 16 6 93 8 162:13 99 8 16 6 SC (HARD PACK SILT w/ CLAY & SOME GRAVEL) Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251275, Curtis Townsend, 08/21/25 Report No: MAT:25-864-1Issue No: 111301 Olive Lane, Anchorage, Alaska 99515 Client:Forge Engineering, Inc. 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:7/21/2025Date: 7293-252025 Material TestingProject: Northern Geotechnical Engineering, Inc. - Material Test Report Terra Firma Testing Phone: (907) 344-5934 | www.nge-tft.com cc:Sierra Gray 68½in 633/8in 56¼in 77¾in 1003in971½in % PassingSieve Size Limits 16No.40 13No.60 10No.100 23No.20 51No.4 35No.10 8.2No.200 Drying By:OvenDate Tested:7/16/2025 Sample Details 25-864-1Sample ID The Cascade B1 L4Location7/14/2025Date Sampled Atterberg Limit: Liquid Limit:Plastic Limit:Plasticity Index:Linear Shrinkage (%): Sample Description: Grading: Not Obtainable NP (Non-Plastic) NP (Non-Plastic) 24.8516D85:7.9129D60:4.4879D50:1.3907D30:0.3455D15:0.1300D10:60.89Cu:1.88Cc: ASTM C136 Tested By:Christopher Gerboth Particle Size Distribution Page 1 of 2© 2000-2025 QESTLab by SpectraQEST.comForm No: 18909, Report No: MAT:25-864-1 mm µm 100 60 20 6 2 600 200 100 50 3"1 1/2" 3/4" 1/2" 3/8" 1/4" #4 #10 #20 #40 #60 #100 #200 Sieve Size COBBLES 0% GRAVEL (49%) COARSE 22.6% FINE 26.3% SAND (43%) COARSE 15.8% MEDIUM 18.9% FINE 8.2% SILT/CLAY 8% Diameter mm µm 100 60 20 6 2 600 200 100 50 3"1 1/2" 3/4" 1/2" 3/8" 1/4" #4 #10 #20 #40 #60 #100 #200 Sieve Size COBBLES 0% GRAVEL (49%) COARSE 22.6% FINE 26.3% SAND (43%) COARSE 15.8% MEDIUM 18.9% FINE 8.2% SILT/CLAY 8% 0 10 20 30 40 50 60 70 80 90 100 Perce ntage Pass i ng (by mass ) Report No: MAT:25-864-1Issue No: 111301 Olive Lane, Anchorage, Alaska 99515 Client:Forge Engineering, Inc. 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:7/21/2025Date: 7293-252025 Material TestingProject: Northern Geotechnical Engineering, Inc. - Material Test Report Terra Firma Testing Phone: (907) 344-5934 | www.nge-tft.com cc:Sierra Gray Sample Details Not Obtainable7/21/2025Nic CropperWell-graded gravel with silt and sandGW-GMJacob Marvin7/14/20255.3A1.8860.89 25-864-1Sample ID The Cascade B1 L4Location7/14/2025Date Sampled ResultCuASTM D2487 Other Test Results MethodDescription Limits CcProcedure ASTM C117Water Content (%)ASTM D2216Date TestedTested ByGroup Code ASTM D2487Group NameTested ByDate TestedLiquid Limit ASTM D4318 NP (Non-Plastic)Plastic Limit NP (Non-Plastic)Plasticity Index Nic CropperTested By 7/21/2025Date Tested Page 2 of 2© 2000-2025 QESTLab by SpectraQEST.comForm No: 18909, Report No: MAT:25-864-1 Comments 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 Day of - of 20, by and between ,,)! &,-, JE_NI 1 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 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 (AWWTS), described as Advantex system located at (legal description) The Cascades, Block 1 Lot 4 2. Maintenance, Repairs and Alterations. wner is required to read, understand and initial each section) 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). 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. I—V n5/1 Ri701 R1 PAQP I Af A 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. Owner agrees to grant the Municipality reasonable access to test and inspect the AWWTS. The Municipality will give at least 24-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. Owner agrees that the AWWTS installation and maintenance requirements as provided by the AWWTS vendor/installer and approved by the Municipality are the governing �j guidelines for the construction, maintenance and repair of the Owner's AWWTS. 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. Nonwaiver. 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. /rwv 05/1 R/M Rl Paart> 7 of 7 OWNER: By• ''' (signature) Date: 8" (print name) STATE OF ALASKA ) ss. THIRD JUDICIAL DISTRICT ) The foregoing instrument was acknowledged before me this 2L) day of 2 0257 by NOTARY PUBLIC FOR ALASKA My Commission expires: M. EAST Notary Public State of Alaska My Commission Expires Sep 20, 2025 1 MUNICIPALITY - By: (signature) Date: t 5— S /S—=O (print name) Title: C i V (L (rPv WI RMI R) pa"o A nF'i