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Home My WebLink AboutSILVERWOODHILL ESTATE #2 LT 1DA• • 1 t t 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: OSP231130 Effective Date: Work Type: WellSeptic Initial Expiration Date: Tax Code Number: 05076223000 Site Legal Address: SILVERWOODHILL ESTATE #2 LT 1 D G:0354 Site Mailing Address: Owner: JOHNSON RICHARD BAARD & LEA S Lot Size in Sq Ft: Design Engineer: FORGE ENGINEERING Total Bedrooms: This permit is for the construction of: 6/9/2023 6/8/2024 245930 Q Disposal Field Q Septic Tank ❑ Holding Tank ❑ Privy Q 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 B y; Date: I Issued By:Date: 6/20 Z 5 Community Development Department f h. Phone: 907-343-7904 Development Services Division Fax: 907-343-7997 On -Site Water & Wastewater Program ON-SITE SEWER/WELL PERMIT APPLICATION Parcel I.D. 050-762-23 Property owner(s) Richard & Lea Johnson Day phone (907) 694-4955 Mailing address 120B Washington Road, West Point, NY 10996 Site address Silverwood Hill Drive Legal description (Sub'd., Block & Lot) Silverwoodhill Estates #2 Lot 1 DA Legal description (Township, Range & Section) Lot Size 245,930 Sq. Ft. Number of Bedrooms 5 APPLICATION IS FOR: APPLICATION IS AN: TYPE OF DWELLING: (® all that apply) Absorption Field ❑X Initial ❑X Single Family (SF) ❑X AD U) Septic Tank 19Upgrade El(w/wo (D) ❑ Holding Tank ❑ RenewalDuplex ❑ Multiple Dwellings ❑ Privy ❑ (SF and/or D) Private Well ❑X Water Storage ❑ THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR: Distance: I certify that the above information is correct. I further certify that this is in accordance with applicable Municipal Codes. �Y L (Signature of property owner or authorized agent) Permit/Rush Fees: Ab'i�>Z//D Waiver Fees: Date of Payment: to r ?a23 Date of Payment: Receipt Number: 3 2 ` Q Receipt Number: Permit No. DC2 P 23 11 30 Waiver No. Permit App_'-'-:- :'-:c; June 8, 2023 MOA Development Services, On-Site Water & Wastewater Program 4700 Elmore Rd Anchorage, AK 99507 Subject: Silverwoodhill Estates #2 Lot 1DA - NHN Silverwood Hill Drive Septic system design Dear On-Site Services Engineer: The owner of the above lot intends to build a 5-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. The ground surface on the lot slopes moderately down from the road at grades between 17-23%. 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. The test holes dug on the lot perked at rates between 3-8 min/in. We have chosen to use the slower perk rate to be conservative, although we are building the trench around the test hole with the faster percolation. 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 OSP231130, Curtis Townsend, 06/09/23 ALTERNATE SITE Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER 1"=50' 30' LONG x 5' WIDE, 0.5' EFFECTIVE DEPTH WITH 1.5' SAND FILTER ABSORPTION TRENCH 1500-GAL SEPTIC TANK w/ BAFFLE REMOVED CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANOUT PV - PUMP VAULT MH - MANHOLE MT - MONITORING TUBE SV - SEPTIC VENT TH - TEST HOLE LEGEND MT TH#2 SILVERWOODHILL #2, LOT 1DA FEET 0 50 100 S I L V E R W O O D H I L L D R I V E 5-BDRM HOME SEPTIC PLAN 5/30/23 1400 1410 1420 1430 1440 1450 1460 1470 1480 30' GAS EASEMENT 60' PRIVATE ACCESS EASEMENT 20' T&E EASEMENT 30' T&E EASEMENT 10' DRAINAGE EASEMENT 5' DRAINAGE EASEMENT PROPOSED WELL LOCATION W/ 50' RADIUS TH#1 1000-GAL RECIRCULATING TANK WITH 2 AX-20 PODS FCO MT PUMP VAULT Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP231130, Curtis Townsend, 06/09/23 SILVERWOODHILL #2, LOT 1DA 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 5' 1'-6" DESIGN FACTORS:SYSTEM REQUIREMENTS: 750 GPD PEAK FLOW PERK RATE: 7 MIN/IN APPLICATION RATE: 5 GPD/SF 5' WIDE TRENCH SYSTEM CAT III ADVANCED TREATMENT SYSTEM: 1500-GAL SEPTIC TANK + 1000 GAL RECIRCULATION TANK AND PUMP VAULT BOTTOM OF TRENCH: AT GRADE FLOW LINE ELEVATION: 0.5' ABOVE GRADE 750 GPD / 5 GPD/SF / 5' WIDE *1 RED FACTOR [0.5 DEEP] = 30 LF TRENCH REQUIRED (30 LF SPECIFIED) GEOTEXTILE FABRIC 1.25" PVC w/ 20 x 3 8" ORIFICES EVENLY SPACED @ 1.5' OC (HOLES DOWN) 5/30/23 6" MOA APPROVED SAND FILTER 2" INSULATION 3:1 MAX SIDE SLOPES2' PROVIDE ADDITIONAL FILL TO ENSURE 2' MIN COVER AFTER SETTLEMENT Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP231130, Curtis Townsend, 06/09/23 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? 3.47 5/25/23 1 2 3 4 5 6 GM (SILTY SANDY GRAVEL) Professional Engineers Stamp: YES SILVERWOODHILL #2 L 1DA 5/18/23 050-762-23 SKYLER QUINN 11:11 6 0 16 11:38 11:50 12:01 12:12 12:23 1.5' OB 30 Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER PERC TEST LOCATION TECHNICIAN: L.TIDWELL 12 0 16 3.5 2.9 5/25/23 COMMENTS: SITE PLAN 6 0 16 USCS SOIL CLASSIFICATION WAS VISUALLY DETERMINED 5/25/23 6 0 1610 94 16 34 16 6 0 1610 90 16 30 16 6 0 1610 814 16 214 16 6 0 1610 813 16 213 16 6 0 1610 813 16 213 16 6 0 1610 814 16 214 166 12:34 TH#1 Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP231130, Curtis Townsend, 06/09/23 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 2 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? 7.6 5/25/23 1 2 3 GM (SILTY SANDY GRAVEL) Professional Engineers Stamp: YES SILVERWOODHILL #2 L 1DA 5/18/23 050-762-23 SKYLER QUINN 11:11 6 0 16 12:14 12:48 1.5' OB 30 Benjamin Schiller CE 12592REGISTEREDPROFESSION A L E N GINEER PERC TEST LOCATION TECHNICIAN: L.TIDWELL 10416 2.5 2.0 5/25/23 COMMENTS: SITE PLAN 410 16 USCS SOIL CLASSIFICATION WAS VISUALLY DETERMINED 5/25/23 6 0 1630 91416 31416 6 0 1630 9 15 16 3 15 16 TH#2 Municipality of Anchorage On-site Water and Wastewater REVIEWED FOR CODE COMPLIANCE OSP231130, Curtis Townsend, 06/09/23 c N C CIL a QI a Z O O ROOF 10'DRAINAGE EASEMENT— 5' DRAINAGE EASEMENTS � I I Lot 4 1447.2 1447.2 3'33"E 659.68' 60' PRIVATE \ ACCESS EASEMENT \ 20' T&E EASEMENT\\ \� 1451.5 18"x35' CMP Lot 1 DA 245,930 S.F. GARAGE EL. 1445.0 SEE HOUSE DETAIL 0 10 25 50 too molli SCALE: 1"=30' a 30' GAS EASEMENT 1p/ <L \ Lot 2 15 0 \� �s OO\ \ \ a• � 1444.5 1435.0 1444.8 1434.8 O 00 — — — — — — — — — — — — — — — — — — — — — — — — — — — - - N 89'58'06"W 824.44'— ROOF 24.44'— HOUSE DETAIL Scale: 1"=40' 30' T&E TBM - TOP OF J" REBAR \\ / Lot 1 C Lot 1 DB EASEMENT ELEVATION = 1484.0 —+ PLOT PLAN _x_ AS BUILT __ SCALE 1"_= 60_ GRID _ NW 0354__ Project No. __23=15181___ inc. (907) Daryl Avenue, Anchorage, Alaska ="\-3049 LEGEND Lang & Associates, (907) 522-6476 Phone kenOlangsurvey.com Professional Land Surveyors /i janaihanolangeurvey.aam .? OF t `t 104.8 EXISTING ELEVATIONtravisOlangsurvey.com Q'�� ' • • • . ll 103.0 PROPOSED ELEVATION �� •' I hereby certify that I have surveyed the following described property: Q 9 �' SURFACE DRAINAGE LOT 1DA, SILVERWOOD HILL ESTATES SUBDIVISION No. 2 (PLAT No. 2009-112) Ao*. 4.9T•*r Anchorage Recording District, Alaska, and that the improvements situated thereon are • • • • • • • • • • • • . • . • • • • 0 within the property lines and do not encroach onto the property adjacent thereto, that r, 0 NOTES: no Improvements on the property lying adjacent thereto encroach on the surveyed ••••• . ••• •••• / 1) LOT COVERAGE = 1.8% premises and that there are no roadways, transmission lines or other visible /� KENNETH G. LAN ,• A 2) SEE ENGINEER'S PLANS FOR easements on said property except as indicated hereon. c It FNo. 5202 F��% WELL & SEPTIC LOCATIONS. ,`PTF . ��Zt3•'' SQA Dated this the --- —�'2 _ Da of may 1X90 _, at Anchorage, Alaska l Day �--' --� g �PROfESSIONP�� It is the responsibility of the owner to determine the existence of any easements, covenants, or restrictions which do not appear on the recorded subdivision plat. State of Alaska AECC963