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Home My WebLink AboutTHURMAN DRIVE LT 3Onsite File THURMAN DRIVE Lot 3 #012-052-51 MUNICIPALITY OF ANCHORAGE On -Site Water &Wastewater Program POBox 19665 470OElmore Road Anchorage, Alaska 98519-805U Phone: -7804 Fax: (9O7)343-7387 On -Site Water System Permit Permit Number: OSP261003 Effective Date: Work Type: Well Initial Expiration Date Tax Code Number: 01205251000 Site Legal Address: THURK8ANDRIVE LT 3 G:2026 Site Mailing Address: 4/3/320 1/12/2027 Owner: JOHNSON OAMON&CHRISTINE Lot Size |mSq Ft: 10093 Design Engineer: FROSTED GROUND ENGINEERING G8ERV|CESLLC Total Bedrooms: 4 This permit is for the construction of: Non -Public El Disposal Field E1 Septic Tank 0 Holding Tank 11 Privy 0 Water Well E1 Water Storage All construction shall be|naccordance 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 (1 8AAC72) and Drinking Water Regulations (1 8AAC80) 3. The wastewater code requires inspections during the installation. The engineer shall notify the Development Services Department per AMC 15.65. Coodinate with On -Site staff regarding preferred method. 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather shall beeither: u. Opened and Closed onthe same day, nr b. Covered, sealed, and heated toprevent freezing � ' o—�� - �/ Issued To: FROSTED GROUND ENGINEERING SSERV|CESLLC 4/3/2020 Issued By: IS@toU B N0iB 4/3/2036 SEWER MAIN S Lu v \ a 0 s � STREET CENTERLINE, TYPP. \ THI�RMAN DRIVE s LOT 1 PARCEL BOUNDARY,TYP. Ty X92 5' THURMAN DRIVE \\ LOT 2 c o 'oo, c Lu POTENTIAL WELL LOCATION (GRADE TO \ POTENTIAL DRAIN AWAY FROM BUILDING uj R150' WELL, MIN. 10' RADIUS) FOOTPRINT w QZI co THURMAN D VE M LOT 3 00 S— — — f' �--- EASEMENT -----__ S I / STORMWATER LINE \v NOTES: ALL WELLS MUST BE INSTALLED IN ACCORDANCE WITH THE STANDARD PROVISIONS IN MOA 15.55 AND 18 AAC 80. 50 100 dtj 1 25 1 1 cl o (FEET) ALL STRUCTURES, WELLS, AND SEPTIC SYSTEM FEATURES ON ADJACENT PROPERTIES ARE BASED ON PUBLICLY AVAILABLE INFORMATION OBTAINED FROM MOA RECORDS AND10R AS -BUILT SURVEYS. ,;+ —( `��% FROSTED GROUND -tQ' ' "`�S l� LOT LEGAL DESCRIPTION: ENGINEERING �'\`•'••• DESIGNEDB EDW Ay g:�(� 9 �t THURMAN DRIVE LOT 3 SERVICES, LLC • 49 TM •••* � CHECKEDBY: EDW 16930 MEADOW CLIENT: CREEK DRIVE, EAGLE �.,,,••,,.•,,,,..••� OBY: EDW DAMON NELSON RIVER AK 99577 ELI D. WARD •' • / PRoa. (907) 398-5272 fi �'� �• CE 105859 ��`�� No. 20251002 PROJECT •"°".5�:��,.� YEAR 2026 THRUMAN DRIVE WELL PLACEMENT CERT. OF AUTHORIZATION: 1``\ pROfESS10�`.�" SHEET 01 OF 01 SHEET TITLE VICINITY MAP 236039 Frosted Ground Engineering Services, LLC Project No. P20251002 Page | 1 of 1 MOA Development Services, On-Site Water & Wastewater Program 4700 Elmore Road Anchorage, AK 99507 Thurman Drive Lot 3 – Well Horizontal Separation Waiver Request To whom it may concern, The owner of the aforementioned lot is looking to construct a single-family home and needs a private well installed on the lot. Due to the location of the sewer main and stormwater main, there is no location on the lot that is greater than 100 ft from either of these components, which is required and as is summarized per MOA 15.55.060 Table A-1. The following analysis and requirements will ensure that the well is not at risk for contamination from these sources: 1. The perspective location of the well, as shown on the site plan, is approximately 86 feet away from the sewer main and 50 ft away from the stormwater main, based on publicly available information. The well site location was evaluated using criteria outlined in the District Office Engineers memo dated January 3, 1985, Subject: Separation Distance Waiver Guidelines for SCRO. The values selected for this analysis are from the actual conditions found based on the Well log from Thurman Drive Lot 1, and are presented in the document titled Thurman Drive Lot 3 Separation Calculations. They need to be updated after the well has been drilled to confirm values. 2. The well casing should be sealed with bentonite from ground surface to at least a minimum of 20 feet below ground surface and have a sanitary seal installed. 3. The in a minimum 10-foot radius around the well should be mounded and graded away to prevent surface infiltration. The general drainage of the lot (based on the 2015 MOA LIDAR survey) is nearly flat, ranging from 0% to less than 1% grade. 4. The stormwater drain appears to serve a relatively confined area, primarily receiving surface water drainage from Thurman Drive towards Jewel Lake. The line also appears to have been constructed in the last few years, so it is unlikely that the line is compromised. The line was constructed with CPEP material, that is known for having a long shelf life and low risk of dangerous leakage. Granting this waiver should not cause any eminent health hazard concerns or adverse effects to the homeowners or neighboring lots. If there are any questions, comments, or concerns, please do not hesitate to contact via phone: (907) 398-5272 or email: Eli@fg-eng.com. Sincerely, Eli D. Ward, PE Principal Engineer 02/03/202 Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP261003, Isatou Njie, 04/02/26 Lot Location: Thurman Drive Subdivision Lot 3 Stormwater Line Water Table: Cased Depth to water: 180 Point Value Sewer depth (est.): 10 Distance: 170 Soil Absorption DEC Points Depth Start Depth End Thickness (ft) Weighted Points Casing Stick up 0 2 2 N/A Overburden 1.5 2 4 2 0.02 Silt & Clay W Gravel 2.5 4 13 9 0.13 Silt & Sand 2.5 13 41 28 0.39 Tight Sand & Gravel 2.5 41 89 48 0.67 Silt & Sand 2.5 89 104 15 0.21 Heaving Silt & Sand 2.5 104 170 66 0.92 Sand & Gravel 1.5 170 180 10 _0.08 180 _- 2.7 Pemeability 0 DEC Points Depth Start Depth End Thickness (ft) Weighted Points Casing Stick up 0 0 2 2 N/A Overburden 0.9 2 4 2 0.01 Silt & Clay W Gravel 2 4 13 9 0.10 Silt & Sand 2 13 41 28 0.31 Tight Sand & Gravel 2 41 89 48 0.53 Silt & Sand 2 89 104 15 0.17 Heaving Silt & Sand 2 104 170 66 0.73 Sand & Gravel 1.5 170 180 10 0.08 180- 1.94 Water Table Gradient Water Elev.Change: 120 Distance: 32 Approximately Gradient -375% Sloping towards water source, ASSUMED WORST CASE �- 0) Horizontal Separation (ft) 32 Total Points: 12.50 Per SOA Technical Memorandum, Subject Separation Distance Waiver Guidelines for SCRO dated January 3, 1985, a point value between 12 and 16 would indicate that no baterological pollution is possible. Chemical pollution or viral pollution may be possible but is unlikely. Cra # '-V--- Lot Location: Thurman Drive Subdivision Lot 3 Sewer Line Water Ta ble: Cased Depth to water: 180 Point Value Sewer depth (est.): 10 Distance: 170 1 — 7.37 Soil Absorotion DEC Points Depth Start Depth End Thickness (ft) Weighted Points Casing Stick up 0 2 2 N/A Overburden 1.5 2 4 2 0.02 Silt & Clay W Gravel 2.5 4 13 9 0.13 Silt & Sand 2.5 13 41 28 0.39 Tight Sand & Gravel 2.5 41 89 48 0.67 Silt & Sand 2.5 89 104 15 0.21 Heaving Silt & Sand 2.5 104 170 66 0.92 Sand & Gravel 1.5 170 180 10 0.08 180 2.41' Pemeability 0 DEC Points Depth Start Depth End Thickness (ft) Weighted Points Casing Stick up 0 0 2 2 N/A Overburden 0.9 2 4 2 0.01 Silt & Clay W Gravel 2 4 13 9 0.10 Silt & Sand 2 13 41 28 0.31 Tight Sand & Gravel 2 41 89 48 0.53 Silt & Sand 2 89 104 15 0.17 Heaving Silt & Sand 2 104 170 66 0.73 Sand & Gravel 1.5 170 180 10 0.08 180— 1.94 Water Table Gradient Water Elev.Change: 120 Distance: 94 Approximately Gradient -128% Sloping towards water source, ASSUMED WORST CASE I — 01 Horizontal Separation (ft) 94 Total Points: 14.47 Per SOA Technical Memorandum, Subject Separation Distance Waiver Guidelines for SCRO dated January 3, 1985, a point value between 12 and 16 would indicate that no baterological pollution is possible. Chemical pollution or viral pollution may be possible but is unlikely. lity r.of Anchorage F P.O. Box 196650 * 4700 Elmore Road Anchorage, Alaska 99519-6650 0 (907) 343-7904 9 Fax (907) 343-7997 htti)://www.muni.org/Onsite Development Division • and Wastewater Program * * * * VARIANCE/WAIVER REVIEW * * * * Waiver#: OSV261001 COSA#: Permit#:OSP261003 PID#: 012-052-51 Legal Description: THURMAN DRIVE LT 3 Engineer: Frosted Ground Engineering Services. LLC The following waivers have been requested, justified, and approved: • The public sewer main is approved to be 94 feet from the private well. • The stormwater line is approved to be 32 feet from the private well. See engineer's waiver request for justifications. This waiver approval applies to the proposed well and sewer main and stormwater line only. Any future upgrade to the on-site wastewater disposal system will require all separation distances be met or another approval from this department. ............................................................................... Waiver is Granted: X Waiver is not Granted: Date: 4/15/2026 Approved by: 'Name of of Re ' wer ............................................................................... **** VARIAN C E/WAIVER REVIEW ****