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Home My WebLink AboutTUXEDNI PARK BLK 1 LT 6Tu dni Park Block ! Lot 6 #041 -022 -08 Municipality of Anchorage .'ct Development Services Department B uildlng $ a fety Divislon On-Site Water and Wastewater Program. 4700 S. Bragaw St. P.O. Box 196650 Anchorage. AK 99619,.66§0 Page w,,vw.ci.anchorage.ak.u$ (907) 343.7904 ON-SITE WASTEWATER DISPOSAL SYSTEM AND/OR WELL INSPECTION REPORT Permit Number: .~ t,.~O/O ~ Z.,,~' PID Number: ~'~° ~tr'.y ~',.T¢rr'; ~o?~,~' Wastewater System: [] New [] Upgrade '~"" 30¥~ ZS~lcl4eo De"t,,'¢~ A'~-~' J'9,¢1"/ ABSORPTION FIELD LEGAL DESCRIPTION ~. 8 O..P ~,. ¥~' Well: [] New [] Upgrade ~ ~,.1 od ,..I ,.r ,, TANK SEPARATION DISTANCES E]$e¢ic D.o~ding I~S.T.E.e. l--lOther: Tank Field station Tank Se,~ver Line ~-/1 ~-1~O O w,., II1' I1~'° Ill' - ~_5'~ _~t~&/ ~V/ ~,~ LIFTorf.~coSTATION ,~.~,,~ ~ ~ "32 37. - '~ Z. ,, I ".'".". BENCH MARK £ngineer'$ $~amp Inspections pedormed by: F~R~p ~ ~c Dates: 1*= V/Ib{ol Developme~~~Approval Reviewed an~ approved by: ~ Y' I~ Date: //-~¢ / · 'to: ~ ~ TR. C.O. "C" 49' 44.5' /~ TR. M.T. "D" 86' 72.5' ~ TR. C.O. "E" 102' 89' WELL ~ TANK C.O. "F" 52' 36' j ~/ LIFT M.H. "G" 62' 44' LOT 6, BLOCK 1 .... '--.....TUXEDNI.. PARK "~ " 1500-G~LLON ", ", STEP TANK ", ~ TJ'L FOUNDATION rBM -C# 48-FOOT LONG ABS. TRENCH W. 8.2' EFF. GRAVEL EII PERMIT NO: SW010225 PAGE 3 OF 3 PID NO: 041-022-08 ~- GROUND ELEV @ T.H.#1 = 87.7' , , 2' SOIL COVER 4'+ SOIL COVER: , , 2" RIGID INSULATION 95.1', 95.1' ' ' TRENCH 92.4 92 3' ,, 46-FOOT LONG SOIL ABS. ', ',. .... ~ ' ' EFFECTIVE GRAVEL ! ............................. , ,, WITH 8 2' ' ' 1500-GALLON STEP TANK ,, " __~ ,' ,' soTroM EXCAVATION ELEV. 86 .9' ' :: BOTTOM T.H.#1 ' ' ~ ":' '. : '~' '"' ELEV, 7g.2' . . ,s .,, .. · · ~,~,' z~ LOT 6, BLOCK 1, TUXEDNI PARK S/D SEPTIC SYSTEM INSTALLATION AS-BUILT PROFILE FLATTOP II,ClINICAL SEP. VICE$ NOT TO SCALE 14~30 £C110 STP. E£T DRAWN BY TFM ANCl IOPJ~O£,.AI~SY.~ ggSI6 SEPTEMBER, 2001 CIVIL& EN~ONMENTAL ENGLNEER~G * ENERGY CONSERYA'I1ON & AN.4~LY$~ TItEODORE F. MOORE, P.E. 14530 ECHO ST. PH: (907) ~45-1355 ANCHORAGE, ALASKA 99516 September 26, 2001 On-site Services MOA DSD P.O. Box 19-6650 Anchorage, AK 99519 Re: Lot 6, Block 1, Tuxedni Park - Septic System Installation construction notes - Permit # SW010225 Dear Sirs: Prior to and during construction of the wastewater disposal system on the subject lot monitoring of test hole # 1 demonstrated the absence of groundwater to a depth of 18.5 feet. Thus we were surprised when the excavator encountered a pocket of saturated soils at a depth of 11 feet at .the southeast end of the trench less than 30 feet from the test hole monitor tube. This moisture was apparently perched on a concave lens of dense silt. We endeavored to stay away from this wet area by slightly raising the bottom of the trench and shifting the end of the trench a little to the northwest. Nevertheless, one day after trench was completed we observed a temporary buildup of 2-3 inches of water in the trench monitor tube, which has since dissipated. The presence of this water was of sufficient concern that I called Jim Cross and requested a site meeting, which took place on Suly 23. Jim concurred that the nearby much deeper and dry test hole monitor tube demonstrated that the small amount of moisture encountered should not be classified as groundwater, and said that the Department would approve the trench as installed. Also, part way through construction it became apparent that the homebuilder was not happy with the floor elevation necessary to allow gravity flow into a conventional septic tank. Accordingly, I spoke with Dan Roth and obtained verbal approval to switch out the original 1250-gallon septic tank for a 1500- gallon STEP tank. The 1.25-inch diameter pressure discharge line was plumbed into the already installed 4-inch diameter gravity distribution pipe. The electrical inspection for the lift station was scheduled to be accomplished in conjunction with the regular electrical inspections for the remainder of the house. Please feel free to give me a call ifyou have any questions. Sincerely, Ted Moore, P.E. Municipality of Anchorage Department of Health and Human Services 825 'L' Street P.O. Box 196650 Anchorage, ^laska 99519-6650 Rick Mystrom htr p:l/www.ct.anchocage.ak.us Mayor Permit Number:. #SW.010225 Date oflssue: 7-6-01 Date Started: 7-29-01 Date Completed: 7-29.01 Legal D~scdption: Property Owner Name & Address: Bo. rchole .D. ata: Soft Type, Thickness & Watc~ S~ata stick-up organic 8, silt silty gra vel gravelly silt silty gravel water sand 8, gravel Parcel Identification Number:. 041-022-08 ls well located at approved permit location? [] Yes [] No .Tuxedni Park BIk 1 Lt 6 Gary & Je~{Soper 3048 Balcl~-bh Dtfve Anchorage, Ak 99517 Depth (ft) From To 0 2 4 4 23 23 54 54 80 80 88 Method of Drilling [] ah'rotary [] cable tool Casing type: steel WallThickncss: .025 inches - Diameter: 6 inches Depth: ~ feet Liner Type: Diameter:. ~ inches Depth: ~ Casing stickup above ground: _2 feet feet Static water level (~om ground level): 33 feet Pumping level: 86 feet after _2 hours pumping 8 gpm Recovery Rate: _.8 gpm Method of Testing: air l~ Well Intake Opening Type: [] Open End [] Open Hole [] Screened Start__ feet Stopped -- feet [] Perforations Start__ feet Stopped feet Grout Type: Bentonite # 8 Volume: 1 bg Depth: Start_0 feet Stopped_+ feet -Pump: Intake Depth feet Pump size hp Brand Name Well Disinfected Upon Completion? [] Yes [] No Method ofDisinfectlon: Clorfne Tablets Comments: Well Driller: Alpine Drflling & Enterptfses P 0 Box 110496 Anchorage AK 99511 At~ention: The well driller shall provide a well log to the property owner within 30 days of completion and the property MUNICIPALITY OF ANCHORAGE Development Sen/ices Department On-Site Water & Wastewater Program 4700 South Bragaw Street P.O. Box 196650, Anchorage, AK 99519-6650 (907) 343-7904 7~fl/z) ! I I ON-SITE WASTEWATER DISPOSAL SYSTEM I WATER SUPPLY PERMIT Initial Date Issued: Jul 06, 2001 Expiration Date: Jul 06, 2002 Permit Number: SW010225 ;Legal DescripUon: TUXEDNI PARK BLK I LT 6 Design Engineer: 0019 Flattop Technical Services Owner Name: Gar~ & Jerri Soper Owner Address: 3048 Balchen Dr. Anchorage, AK 99517- Parcel ID: 041-022-08 Site Address: Lot Size: 90894 SQ. FT. Total Bedrooms: 4 Permit Bedrooms: 4 This permit Is for the construction of: [] Disposal Field [] Septic Tank [] Holding Tank [] Privy [] Private Well [] Water Storage All construction must 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 engineer must notify DSD at least 2 hours prior to each inspection. Provide notification by calling (907) 343-7904 ( 24 hours ). ( Not required for a Water Supply Permit only ). 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather must be either: A. Open and closed on the same day. B. Covered, sealed, and heated to prevent freezing. D, te: Date: Municipality of Anchorage Development Services Department Building Safety Division On-Site Water and Wastewater Program 4700 South Bragaw St. P,O. Box 196650 Anchorage, AK 99519-6650 www.ci.anchorage.ak.us (907) 343-7904 ON-SITE SEWEPJVVELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. Permit Number,SWO.~ Property owner(si Mailing address (1) Day phone Mailing address (2) /~ ¢-.~'~'~'~. ~ Legal description (Lot, Block & Sub'd.) L~>'~ ~ Legal description (Section, Township & Range) Lot Size 9,O~o~'~ Acres/Sq. Ft. Number of Bedrooms Zip Code <~,.¢t '7 THIS APPLICATION IS FOR: Sewer Only Sewer and Well Sewer Upgrade THIS PROPERTY CONTAINS: Hot Tub Swimming Pool Therapy Pool [] Well Only [] [] Water Storage [] ~[] Jacuzzi Water Softening Unit I certify that the above information is correct. I further cedify that this application is being made for a Single Family Dwelling and is in accordance with applicable Municipal Codes. (Signature of property owner or authorized agent) Permit Fees: Date of Payment: Receipt Number: (Rev. 12/00) Waiver Fees: Date of Payment: Receipt Number: CIVIL& ENVIRONMENTAL ENGLNEERLNG · ~GY CONSERVA~N · ~ ~O~RE F. MOORE, P.E. 14530 ECHO ST. PH: ~07) J45.135S ~CHO~GE. ~KA 99516 June 22, 2001 M.O.A. DSD P.O. Box 19-6650 Anchorage, AK 99519 Dear Sirs: The purpose of this letter is to provide the required design narrative in support &our application for a permit to construct wastewater disposal facilities on Lot 6, Block 1, Tuxedni Park S/D, located at 9600 Chenega Drive Soils logs, pert test results, a site plan, design drawings and specifications are enclosed for your review. The proposed system will be constructed in the vicinity ofte~t hole # 1. As ca~ be seen from the soil log, the native material between 1' and 18.5 feet is a mixture of sands and gravels, with occasional lenses &silt. Although the measured pete rate in the pere test hole was << 1 minute per inch, I have used 0.8 gpd/square foot as an overall soil application rate to compensate for the expected erratic silt lenses that will be encountered in the trench. The presence of predominantly sand material below 11 feet will ensure adequate filtration without installation of imported filter material. Using a soil application rate of 0.8 gpd/sq, ft., this 4-bedroom residence requires a total absorption area of(4 x 150)/0.8 = 750 square feet. The proposed 42-foot long trench design with an effective gravel depth of 9.0 feet has a total absorption area of 756 square feet. The topography of the lot in the area &proposed construction slopes gently towards the southeast at approximately 3%. The proposed project will have no significant impact on present or future water supply and wastewater disposal systems serving adjacent properties, nor will it have any significant impact on reserved space-surface and subsurface, or on drainage. Please give me a call at 345-1355 if you have any questions on, this submittal. Sincerely, Ted Moore, P.E. SEPTIC LOT 5 R 100' PROPOSED WELL PROPOSE° EXIST. · WELL'S., ', ',, ' T.H. __~ ,, ~ #2 LOT 9 LOT 6, BLOCK 1 TUXEDNI PARK INSTALL 1250-GALLON SEPTIC TANK CONSTRUCT 42' LONG SOIL ABS. TRENCH W. 9.0' GVL. BELOW DISTRIBUTION PIPE SEPTIC / ' ' / LOT8 ',,~',,,, ~ AREA OF ~;~ ....... ~ ;% ~ k ', 358? #1 SffE FOR LOT 7 REPL. TR. ..o ........ , SEPTIC ~ X~ WELL ,; / LOT 6, BLOCK 1, TUXEDNI PARK S/D PROPOSED WELL AND SEPTIC SYSTEM SITE PLAN FLA'rI'OP T[CIINICA~ SER¥]CES J 1 INCH = 70 FEET 14530 ECIIO STI~ET J DRAWN BY TFM ANCl lOP, AGE, ALASKA 99S I 6 JUNE, 2001 NOTE: THIS IS NOT A SURVEYED PLAT. ALL LOCATIONS SHOWN ARE APPROXIMATE. .~..~. _ 4" DIA~ ASTM D-3034 WASTE LINE FROM HOUSE 1250-GALLON SEPTIC TANK 42-FOOT LONG SOIL ABS. TRENCH "A" ~ ~ WITH 9.0' GRAVEL BELOW DIST. PIPE "A" L~. ' ' ~ 4" DIA~ F-810 PERF PIPE PLAN VIEW SCALE: 1" = 10' MONITOR TUBE CLEANOUT MOUND BACKFILL ORIGINAL GROUND -- FILTER FABRIC -- 4" DIA~ F~10 PERF. DIST. PIPE ! lfZ' SEWER GRAVEL BOTTOM OF EXCAVATION CROSS-SECTION "A - A" SCALE: 1" = 5' - 0" LOT 6, BLOCK 1, TUXEDNI PARK S/D SEPTIC SYSTEM DESIGN PLAN AND CROSS-SECTION FLATroP TECI INICAL SERVICF_.S 14530 ECilO STREET ANCI IORAGE, AK, 99516 SCALE: AS SI IOWN DRAWN BY: TIM JIJ~, 2001 q:fattop 'Tecllnicaf Serviees 14530 ~Ecilo Street, ~Incllorage, ~ 99516 ~'fwne (907) $45-1555 Lot 6, Block 1, Tuxedni Park S/d 9600 Chenega Drive Wastewater disposal system installation Specifications 1.0 General: 1.1 The scope ofthe project consistsofinstallationofa 1250-gallon septic tank that discharges effluent into a 42-foot long soil absorption trench with a total of 9.5 feet of sewer gravel. 1.2 Construction shall be as depicted on the approved site plan and design drawings. Minor deviations from these drawings may be allowed or required by the engineer conducting the inspections. All construction procedures and material specifications shall conform to Municipal and State requirements. All separation distances shall be in conformance with Municipal requirements, unless specifically waived. 1.3 The contractor shall be responsible to obtain any necessary utility locates, and to work around any buried utilities. 1.4 The contractor shall provide adequate cover material and rough grading over all system components to ensure that proper drainage is achieved after settlement and that there are no residual depressions. Insofar as possible the contractor shall minimize damage to trees and existing lawn areas. 1.5 Unless specifically agreed otherwise, the homeowner shall be responsible for finish grading after the soil is compacted, as well as placement of topsoil and reseeding all areas disturbed by the construction. 2.0 Septic Tank: 2.1 The new 1250-gallon, 2 compartment septic tank shall be Municipally approved and shall be set level on undisturbed soil. Each compartment shall be equipped with a watertight manhole cover and a 4" cleanout. Ifthe tank is buried less than 4 feet, it shall be insulated with 2 inches of approved burial type, rigid insulation. 2.2 All pipe connections to the tank shall be equipped with waterproof mechanical couplings. The waste line from the residence to the septic tank shall have a minimum slope of 1/4'" per foot, and the waste line between the tank and the soil absorption system shall have a minimum slope of 1/8" per foot. A cleanout shall be installed within 5 feet ofthe building foundation, and a double cleanout shall be installed within 5 feet downstream of the septic tank. 3.0 Soil nbsorption system: 3.1 The soil absorption system shall be constructed by excavating a 42-foot long trench to a depth of 12.5 feet below ground elevation in the vicinity of test hole Itl. 3.2 The bottom ofthe excavation shall be level. Any compacted or smeared surfaces shall be raked to allow proper infiltration. 3.3 A total of 9.5 feet of approved sewer gravel shall be placed in the bottom of the excavation with the perforated distribution pipes laid level such that the pipe inverts are no less than 9.0 feet above the bottom of the sewer gravel. Sewer gravel shall be 0.5" - 2.5" screened gravel, with less than 3% passing the It200 sieve. 3.4 Monitor tubes and cleanout pipes shall be of 4" diameter and installed in the locations shown on the design drawings. The portion of the monitor tube extending through the sewer gravel shall be perforated. 3.5 Approved filter fabric shall be placed over the entire top surface of the sewer gravel. A minimum of 2 feet ofsoil cover is to be placed over the filter fabric. If the soil cover thickness is less than 3 feet, two inches of rigid, burial type insulation is to be placed over the entire top surface of the gravel, in addition to the filter fabric. 3.6 The top surface of the cover material shall be raised a minimum of 6 inches higher than the surrounding terrain to allow for subsequent settlement, and shall be graded to smooth contours. Fill slopes shall be no steeper than 3:1. 3.7 Unless specifically agreed otherwise the homeowner shall be responsible for arranging to have the site finish graded after the backfill material has stabilized, and for placement of adequate topsoil and seed to promote rapid revegetation ofall areas disturbed by the construction. 4.0 Inspections: 4.1 A minimum of 4 engineering inspections will be required during the course ofthe project: (I) initial stakeout with the contractor to establish the location ofthe system and to discuss the plans, specifications and construction procedures, (2) after the native material has been excavated to expose the infiltrative surface to ensure that it is level and at the right elevation, and conforms with the soil test information, (3) after the sewer gravel is in place and the distribution pipes have been laid and connected up to the septic tank, but prior to placement of insulation or filter fabric, and (4) after rough backfill and grading is complete. The septic tank requires one inspection after it is set level and the piping connected, but prior to backfill. This inspection may be incorporated with any of the above inspections. 4.2 The installer shall coordinate the timing of the inspections with the engineer sufficiently far in advance to ensure the availability ofthe engineer. ITESTHOLE#! LEGALDESCRIPTION: DATEPERFORMED: PERFORMEDFOR: (feet) 2- 3- 4- I Lot 6, Block 1, Tuxedni Park SE) May 23, 2001 Gary and Jerri Soper GW Cleansandygravel FLATTOP TECHNICAL SERVICES 14530 ECHO ST. ANCHORAGE, ALASKA 99516 SOILS LOG -- PERCOLATION TEST SLOPE SITE PLAN SP Clean medium sand ML Gravelly silt GM Silty gravel SW/GW Clean Sand gravelly, with pockets of ML Depth to Groundwater Date ~___~o_groundwater 5/23101 Omtor~be dry 6/4/01 Monitor tube dry ~0/01 Clock Net Time Percomater Net Drop Date Reading Time (minutes) Reading (inches) {~/23 17' presoak 27--3_/8 Resoak 273/8 Add water & start 4:13Z55 23_3/8 #1 4:15~55 2 18_3/4 4 §/8 Add water 4:16Z20 23 3/8 #2 4:18:20 2 18~18 4 1/2 Add water 4:18:45 23-;172 #3 4:20~5 2 19T/8 4 3~ PERCOLATION RATE <<1 (minutesAnch) PERC HOLE DIAMETER 6" TEST RUN BETVVEEN 6.5 FT AND 7.0 FT COMMENTS: Soil strata encountered in test hole(s) were highly variable, but generally very good for on-sEe soil abs. systems. Despite high perc rate, no need for sand filter due to u*ndedying sand. Recommend using 0.8 ~l:xJ/sq. ft. overall to comp. for sitfier strata. PERFORMED BY FLATTOP TECHNICAL SERVICES. I ,~..~ ~ CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: ~/~ 2../~,f, ITESTHOLE#2 FLATTOP TECHNICAL SERVICES 14530 ECHO ST. ANCHORAGE, ALASKA 99516 SOILS LOG -- PERCOLATION TEST LEGAL DESCRIPTION: Lot 6, Block 1~ Tuxedni Park S/D DATE PERFORMED: May 23, 2001 PERFORMED FOR: Gary and Jerfi Sopef DEPTH ~ (feet) PL 4- 5 6- 7- 8- SM Silty loam SP/GP Gravelly sand ML./GM Gravel/y silt GP Clean black sandy gravel SLOPE T.H.__ #1 T.H. ~O #2 COMMENTS: GM Silty gravel Depth to Groundwater Date __No_groundwater 5/23101 Monitor lube dry 6/~0/01 o. OP Silty sandy gravel Clock Net Time Pemometer Net Drop Date Reading Time (minutes) Reading (inches) PERCOLATION RATE (minutes/inch) PERC HOLE DIAMETER TEST RUN BETWEEN F-rAND FT No percolation test conducted because the matedal in this test hole appeared sligh_tly less desirable than in test hole #1. PERFORMED BY FLATTOP TECHNICAL SERVICES. I ,~*~.~ ~ CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: ,~'/T.. ,?. / ~/