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Home My WebLink AboutHENKINS BLK 1 LT 9HENKINS Lot 9 051 - 292 - 17 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: OSP251190 Work Type: WellSeptic Initial Tax Code Number: 05129217000 Site Legal Address: HENKINS BLK 1 LT 9 G:0755 Site Mailing Address: 16035 OLD GLENN HWY, Chugiak Owner: MIDNIGHT SUN CONSTRUCTION LLC Design Engineer: FORGE ENGINEERING This permit is for the construction of: Effective Date Expiration Date Snr r. n I)e1mrtMelit Lot Size in Sq Ft: Total Bedrooms: 6/12/2025 6/12/2026 20038 Q Disposal Field Q 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 Received By: Date: Issued By: _ Date: I/ �� 3 ON -SITE SEPTIC/WELL PERMIT APPLICATION Parcel I.D. 051-292-17 Property owners) Midnight Sun Construction LLC Day phone (907)727-1433 Mailina address PO Box 210994, Anchorage, AK 99521 Site address 16035 Old Glen Hwy Legal description Henkins7 Block 1 Lot 9 Number of Bedrooms 3 Engineering Firm Forge Engineering Building Permit Number Not Applicable ❑ APPLICATION IS FOR: APPLICATION IS AN: (Z all that apply) Disposal Field ED Initial F-1 Septic Tank ED Upgrade El Holding Tank ❑ Renewal El Privy ❑ Well Fx] Water Storage 0 THIS APPLICATION INCLUDES A WAIVER REQUEST FOR: Permit/Rush Fees: �q V 0 Date of Payment: L o. /a' — Permit No. O.S 2a 51 tq 0 Waiver Fees: Date of Payment: Waiver No. Distance: May 2025 June 2, 2025 MOA Development Services, On-Site Water & Wastewater Program 4700 Elmore Rd Anchorage, AK 99507 Subject: Henkins, Block 1 Lot 9 – Old Glen Hwy Septic system design Dear On-Site Services Engineer: The owner of the above lot intends to build a 3-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 has a drop off down from the proposed house to the septic system. There is a moderate slope of around 10% where the proposed system will be located. 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 logs, 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 OSP251190, Curtis Townsend, 06/12/25 Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER 1"=40' LOCATE NEIGHBORING SEPTIC SYSTEMS BY SURVEY AND ENSURE 100' SEPARATION CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANOUT FS - FLOW SPLITTER VALVE MH - MANHOLE MT - MONITORING TUBE SV - SEPTIC VENT TH - TEST HOLE LEGEND TH#1 HENKINS, BLOCK 1 LOT 9 FEET 0 40 80 SEPTIC PLAN 5/28/25 GI L B E R T R O A D OL D G L E N N HIG H W A Y PROPOSED WELL EXISTING WELL 100' WELL RADIUS 505 510 515 520 525 (2) 60' LONG X 5' WIDE, 0.5' EFFECTIVE DEPTH TRENCHES 1250-GAL STEP TANK MT MT MT MT FCOVACANT VACANT VACANT VACANT ALTERNATE SITE CAT III, 5' WIDE X 20' LONG, 0.5' EFFECTIVE DEPTH 3-BDRM HOME EXISTING SEPTIC EXISTING SEPTIC, LOCATION APPROXIMATED LOCATE NEIGHBORING SEPTIC SYSTEMS BY SURVEY AND ENSURE 100' SEPARATION Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251190, Curtis Townsend, 06/12/25 HENKINS, BLOCK 1 LOT 9 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 DRAINFIELD ROCK DESIGN FACTORS:SYSTEM REQUIREMENTS: 450 GPD PEAK FLOW PERK RATE: 7.5 MIN/IN APPLICATION RATE: 0.8 GPD/SF 5' WIDE TRENCH SYSTEM 1250-GAL STEP TANK BOTTOM OF TRENCH: AT GRADE FLOW LINE ELEVATION: 0.5' ABOVE GRADE 450 GPD / 0.8 GPD/SF / 5' WIDE * 1.0 RED FACTOR [0.5' DEEP] = 112.5 LF TRENCH REQUIRED (120 LF SPECIFIED) 11 4" PVC w/ 1 8" ORIFICES EVENLY SPACED @ 6.0' OC 5/30/25 PROVIDE 6" TOPSOIL AND GRASS SEED 5' 2' 6" 2' 6" MOA APPROVED SAND GEOTEXTILE FABRIC AND 2" INSULATION MAXIMUM 3:1 SLOPE Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251190, Curtis Townsend, 06/12/25 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 SC (SILTY SAND w/ POCKETS OF CLAY AND SOME COBBLES) Professional Engineers Stamp: HENKINS B1 L9 5/21/25 051-292-17 MIDNIGHT SUN CONSTRUCTION LLC OB Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER PERC TEST LOCATION TECHNICIAN: JUSTIN EARLS COMMENTS: SITE PLAN USCS SOIL CLASSIFICATION WAS VISUALLY DETERMINED 5/28/25 SM (SANDY SILT w/ SOME GRAVEL) DATE READING NET TIME (minutes) DEPTH to WATER NET DROP PERCOLATION RATE: (MIN/INCH) (inches)(inches) 7.5 5/21/25 1 2 3 4 5 6 330 7 2 16 4 2 16 3 3 30 30 7 47 4 DATE OF MONITORING DEPTH TO WATER AFTER MONITORING4' 5/28/25 MOISTURE NOTED AT TIME OF DIGGING?YES Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251190, Curtis Townsend, 06/12/25