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Home My WebLink AboutHENKINS BLK 1 LT 10HENKINS Lot 10 Municipality of Anchorage On-Site Water and Wastewater Section • (907) 343-7904 Page of ON-SITE WASTEWATER INSPECTION REPORT Permit Number: ___________ PID Number: ___________ Dwelling: Single Family (SF) with ADU Duplex (D) Two Single Family Project: New Upgrade Name ABSORPTION FIELD Site Address Deep Trench Wide Trench Bed Mound Other Phone Number of Bedrooms Soil Rating Total depth from original grade GPD/SF Ft. LEGAL DESCRIPTION Depth to pipe invert from original grade Gravel depth beneath pipe Subdivision Block Lot Ft.Ft. Fill added above original grade Gravel length Township Range Section Ft.Ft. Gravel width Beds: Number of Lines Distance between lines SEPARATION DISTANCES Ft. Ft. From To Septic Tank Absorption Field Lift Station Holding Tank Sewer Line Total absorption area Number of trenches Dist. between trenches Ft2 Ft. Well TANK Septic S.T.E.P. Holding Other Manufacturer Capacity Surface Water NA Gal. Material Number of compartments Lot Line Foundation LIFT STATION Manufacturer Capacity Gal. Remarks Alarm location Electrical installed by Installer PIPE MATERIAL House to tank Tank to drainfield Drainfield CO/MT Inspector BENCH MARK (Assumed elevation)ft Inspection dates:1st 2nd Location and description 3rd 4th ON-SITE WATER AND WASTEWATER SECTION APPROVAL Engineer’s Stamp Conditional Approval: Date Septic System Approved ____________________________ Date Note: this approval does not include well permit requirements. (Rev 05/02/18) Benjamin Schiller CE 12592 R E G ISTEREDPROFE S S I O N A L E N GINEER 1"=50' CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANOUT FS - FLOW SPLITTER VALVE MT - MONITORING TUBE TH - TEST HOLE LEGEND PERMIT # OSP251128 PID # 051-292-32 HENKINS, BLOCK 1 LOT 10 A B FCO MH 36.6 SV 39.1 2CO 40.4 CO1 38.8 MT1 38.7 CO2 60.1 2.8 8.5 13.4 16.0 24.2 25.4 36.6 FEET 0 50 100 PLAN AS-BUILT 3/31/26 GI L B E R T R O A D (2) 60' LONG x 5' WIDE, 6" EFFECTIVE DEPTH ABSORPTION TRENCHES 1250-GAL SEPTIC TANK CO2 CO1 CO3 CO4 MT3 MT4 MT1 MT2 2CO FCO EXISTING NEIGHBORING SEPTIC TH#1 EXISTING WELL (TYP) UNDEVELOPED ALTERNATE SITE CAT III SYSTEM 25' LF, 5' WIDE, 6" ED 4-BDRM HOME MH SV MT2 62.7 CO3 106.4 MT3 104.6 CO4 92.3 MT4 91.9 39.2 94.3 92.7 82.9 83.1 A B APPROX. LOCATION OF NEIGHBORING SEPTIC 6.0 TH LOCATION CONFIRMED DURING INSTALLED MOA CONTOURS USED FOR PERMIT INACCURATE-TRENCHES PLACED AS PARALLEL AS POSSIBLE BENCHMARK LOCATION PROFILE AS-BUILT (NO SCALE) 96.6 91.5 97.1 100.0 FC O MH SV PERMIT # OSP251128 PID # 051-292-32 HENKINS, BLOCK 1 LOT 10 1250 GAL SEPTIC TANK 2C O 96.4 Benjamin Schiller CE 12592 R E GISTEREDPROFE S S I O N A L E N GINEER 3/31/26 60' DRAINFIELD ROCK MT 1 CO 1 CO 2 MT 2 MOA APPROVED SAND 99.7 ORIGINAL & FINISH GRADE TH # 1 GROUNDWATER @86.7 11/21/24 95.1 80.7 94.6 92.6 2" INSULATION 95.1 94.6 92.6 60' DRAINFIELD ROCK MT 3 CO 3 CO 4 MT 4 MOA APPROVED SAND 99.7 ORIGINAL & FINISH GRADE TH # 1 GROUNDWATER @ 86.7 11/21/24 95.1 80.7 94.6 92.6 95.1 94.6 92.6 Certified Drilling Log OWNER OF LAND: Midnight Sun Construction ADDRESS: 19903 Gilbert Rd. Chugiak, AK 99567 LEGAL DESCRIPTION HENKINS BLK 1 LT 10 DATE: 6/3/25 PERMIT NUMBER: OSP251128 DATE OF ISSUE: 5/8/25 TAX IDENTIFICATION NUMBER 05129232000 Is well located at approved permit location: Yes No Method of Drilling: air rotary cable tool Depth of Well: 59’ Casing Type: Steel Wall thickness .250 inches Diameter: 6 inches, depth 55 feet Liner type Static Water Level: 40 feet Recovery Rate 2 gpm gph Method of Testing Air Well Intake Opening Type: open end open hole Screened Start feet Stopped Perforations Start feet Stopped Grout Type: Bentonite Volume: 50 Lbs. Depth: from 2 feet, to 42 feet Well Disinfected Upon Completion: yes no Method of Disinfection: Chlorine 50 PPM Comments: Drilled down to 64’ and pulled casing back to 59’ for best water. Bore Hole Data Depth From To 0 2 Casing Stickup 2 4 Overburden 4 15 Sand & gravel w/ boulders 15 31 Sand, some gravel 31 43 Clay, some gravel 43 52 Silt, gravel, boulders 52 59 Sand & gravel Drillers Name: Cole Sullivan ATTENTION: It is the responsibility of the property owner to submit a copy of the well log to the proper authority. Municipality of Anchorage: Department of Health & Human Services and/or Department of Environmental Conservation. MatSu Borough: Department of Environmental Conservation. www.sullivanwaterwells.com Pump Installation Log Well Drilling Permit Number: OSP 251128 Date of Issue 5/8/25 Parcel Identification Number: 05129232000 Legal Description Property Owner Name & Address Henkins BLK 1 LT 10 Midnight Sun Construction 19903 Gilbert Rd. Chugiak, AK 99567 Pump Installation Date: 9/22/25 Pump Intake Depth Below Top of Well Casing: 52 feet Pump manufacturer’s Name: Flint & Walling Pump Model: 4F11P05301S Pump Size: 1/2 hp Pitless Adapter Burial Depth: 12 feet Pitless Adapter Installer: Pitless Manufacturer: Unknown Disinfected Upon Completion? yes no Method of Disinfection: Chlorine 50 PPM Comments: Pump Installers Name: Sullivan Water Wells Attention: The pump installer shall provide a pump installation log to the DSD within 30 days of pump installation. Merrill 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: OSP251128 Work Type: WellSeptic Initial Tax Code Number: 05129232000 Site Legal Address: HENKINS BLK 1 LT 10 G:0755 Site Mailing Address: Owner: MIDNIGHT SUN CONSTRUCTION LLC Design Engineer: FORGE ENGINEERING This permit is for the construction of: Effective Date Expiration Date: Lot Size in Sq Ft Total Bedrooms: L>cpartai�<:•nr 5/8/2025 5/8/2026 40511 Q Disposal Field Q Septic Tank ❑ Holding Tank ❑ Privy W 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: -5 ' �- - Date: Issued By: Date: S '✓ r ON -SITE SEPTIC/WELL PERMIT APPLICATION Parcel I.D. 051-292-32 Property owners) Midnight Sun Construction LLC Day phone (907)727-1433 Mailing address2000 E Dowling RD STE 8 Site address 19980 Gilbert Rd Legal description Henkins Block 1 Lot 10 Number of Bedrooms4 Engineering Firm Forge Engineering Building Permit Number R251714 Not Applicable ❑ APPLICATION IS FOR: APPLICATION IS AN: (Z all that apply) Absorption Field Initial El Septic Tank Upgrade ❑ Holding Tank ❑ Renewal ❑ Privy ❑ Well Fi THIS APPLICATION INCLUDES A WAIVER REQUEST FOR: Permit/Rush Fees:vv Date of Payrnent:. Permit No. II Waiver Fees: Date of Payment: Waiver No. Distance: May 5, 2025 MOA Development Services, On-Site Water & Wastewater Program 4700 Elmore Rd Anchorage, AK 99507 Subject: Henkins B1 L10 - 19980 Gilbert Rd Septic system design Dear On-Site Services Engineer: The owner of the above lot intends to build a 4-bedroom home on the property. This permit application is 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 slopes toward the southwest at a relatively steady slope. 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 OSP251128, Curtis Townsend, 05/08/25 5 1 0 . 0 5 2 0 . 0 5 0 8 . 0 5 1 2 . 0 5 1 4 . 0 5 1 6 . 0 5 1 8 . 0 5 2 2 . 0 5 2 4 . 0 Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER 1"=50' CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANOUT FS - FLOW SPLITTER VALVE MT - MONITORING TUBE TH - TEST HOLE LEGEND HENKINS, BLOCK 1 LOT 10 FEET 0 50 100 SEPTIC PLAN 5/1/25 GI L B E R T R O A D (2) 60' LONG x 5' WIDE, 6" EFFECTIVE DEPTH ABSORPTION TRENCHES NEW 1250-GAL SEPTIC TANK CO CO CO CO MT MT MT MT 2CO FCO EXISTING NEIGHBORING SEPTIC TH#1 PROPOSED WELL UNDEVELOPED UNDEVELOPED SEPTIC SYSTEM OUTSIDE WELL RADIUS FS ALTERNATE SITE CAT III SYSTEM 25'LF, 5' WIDE, 6" ED ENSURE >100' SEPARATION FROM WELL ON LOT 8 (LOCATION ESTIMATED) Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251128, Curtis Townsend, 05/08/25 HENKINS, BLOCK 1 LOT 10 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 6" 4' 6" DESIGN FACTORS:SYSTEM REQUIREMENTS: 600 GPD PEAK FLOW PERK RATE: 0.07 MIN/IN APPLICATION RATE: 1.0 GPD/SF (FILTER SAND) 5-WIDE TRENCH SYSTEM WITH 2' SAND FILTER 1250-GAL SEPTIC TANK BOTTOM OF TRENCH: 5' BELOW GRADE FLOW LINE ELEVATION: 4.5' BELOW GRADE 600 GPD / 1.0 GPD/SF / 5' WIDE * 1.0 RED FACTOR [0.5' DEEP] = 120 LF TRENCH REQUIRED (120 LF SPECIFIED) GEOTEXTILE FABRIC 6" 5/1/25 5' 2' Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251128, Curtis Townsend, 05/08/25 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 0.07 11/14/24 1 2 3 4 5 6 GP Professional Engineers Stamp: HENKINS BLOCK 1 LOT 10 11/14/24 051-291-11 MIKE ANDERSON 1 0 16 1' OB 0:21 Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER PERC TEST LOCATION TECHNICIAN: M Jakubisin 7 0 16 13' 11/21/24 COMMENTS: SITE PLAN 6 0 16 USCS SOIL CLASSIFICATION WAS VISUALLY DETERMINED 5/1/25 MOISTURE NOTED AT TIME OF DIGGING?n/a 0:18 0:23 0:25 0:26 0:26 1 0 16 1 0 16 1 0 16 1 0 16 1 0 16 7 0 16 6 0 16 7 0 16 6 0 16 7 0 16 6 0 16 7 0 16 6 0 16 7 0 16 6 0 16 GM (SANDY) Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP251128, Curtis Townsend, 05/08/25 MUNICIPALITY OF ANCHORAGE Afte Development Services Department Phone: (907)343-7904 On-Site Water & Wastewater Section Fax: (907)343-7997 Certificate of On -Site Systems Approval OSC261090 Parcel ID 051 -292-32 Legal description HENKINS BLK 1 LT 10 Site address 19903 GILBERT RD Expiration Date: Current property owner(s) MIDNIGHT SUN CONSTRUCTION LLC X The On-site system(s) is/are approved for 4 bedrooms Conditional approval for bedrooms, with the following stipulations: Comments or conditions: No comments By: Isatou B Njie Original Certificate Date: 5/5/2026 This Certificate of On -Site Systems Approval (COSA) is intended to demonstrate the subject system(s) is/are in substantial compliance with municipal code. The Municipality of Anchorage, Development Service Department (DSD) issues COSAs based upon representations provided by an independent professional engineer. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineer's submittal. ATTACHMENTS: COSA Checklist X Well Flow Advisory Absorption Field Advisory Nitrate Advisory Tank Age Advisory Arsenic Advisory Other COSA Checklist_May2025.docx COSA Checklist Legal Description: Parcel ID: If more than 1 well and/or septic system on lot, provide separate checklist. Structure served by this system ____ A. WELL DATA Well log is filed with Onsite (or attached) Date drilled Total depth ft Cased to ft Sanitary seal is functioning correctly Wires are properly protected Casing height (above ground) in. Date of flow test for COSA Static water level at beginning of test ft. Well production at time of test gpm Water storage tank volume gallons Well disinfected for coliform test? Yes No Coliform bacteria is Negative Nitrate mg/L Nitrate less than MRL (ND) Arsenic ug/L Arsenic less than MRL (ND) Collected by Date Comments __________________________________________________________________________________ B. TANK DATA Measured operating fluid level in septic tank Date of pumping Required maintenance completed, if AWWTS Comments: C. LIFT STATION Required maintenance completed Age of lift station years Lift station material Comments: D. DISPOSAL FIELD DATA Which system tested (date installed) ALL standpipes present per record drawing Total measured depth from grade ft (max) Measured depth to pipe invert from grade ft (min) N/A – pressurized field. Per record drawings, field is insulated. Monitor tubes go to bottom of effective. If not, state depth into effective Presoaked required if (Required if house vacant or field not used for more than 30 days prior to date of test) Gallons introduced gallons date Any rejuvenation treatment (past 12 months) If yes, enter date Adequacy test date Results Pass Fluid depth prior to test in Water added gal New fluid depth in Elapsed time min Final fluid depth in Absorption rate gpd FIELD STATUS – POST RECOVERY Effective depth (per record drawings) in Effective depth used in Effective depth remaining in Comments/Deficiencies: COSA Checklist_May2025.docx E. SEPARATION DISTANCES From Well on Lot to:(Please enter distances if less than required) Septic Tank/Lift Station on Lot > 100’ Yes if No ft Neighboring Tank > 100’Yes if No ft Disposal Field on Lot > 100’Yes if No ft Neighboring Disposal Fields > 100’ Yes if No ft Sewer Line/Main > 100’ Yes if No ft Sewer Manhole/Cleanout > 100’ Yes if No ft Sewer Service/Septic Line > 25’Yes if No ft Holding Tank > 100’ Yes if No ft Animal Containment > 50’Yes if No ft Manure/Animal Excreta Storage > 100’ Yes if No ft N/A – Served by Community Well (not on lot) or Public Water From Septic/Holding Tank and Disposal Field(s) on Lot to:(Please enter distances if less than required) Tank to Foundation > 10’Yes if No ft Field to Foundation > 10’ Yes if No ft Tank to Property Line > 5’ Yes if No ft Field to Property Line > 10’ Yes if No ft Water Main/Service Line > 10’Yes if No ft Surface Water > 100’Yes if No ft Wells on Adjacent Lots: Wells > 100’Yes if No ft Community Wells > 200’Yes if No ft If tank or field is under driveway comment below F. ENGINEER’S COMMENTS G. CERTIFICATION & STATEMENT OF INSPECTION BY ENGINEER As certified by my seal affixed hereto and as of the validation date shown below, I verify that my investigation, based on procedures outlined in the Certificate of On-Site Systems Approval Guidelines, indicates that the on-site water supply and/or wastewater disposal system appears to comply with applicable Municipal and State codes, ordinances, and regulations in effect at the time of installation, unless noted otherwise. Name of Firm Phone Engineer’s Printed Name Date