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Home My WebLink AboutVALLI VUE ESTATES #2 BLK 6 LT 14Volli Vu states lock 6 Lot 14 015-31 ! -49 Permit Number: Tax Code Number: Work Type: On-Site Wastewater Disposal System Permit OSPl11323 01531149000 Septic MUNICIPALITY OF ANCHORAGE Development Services Department On-Site Water & Wastewater Program 4700 Elmore Road, PO Box 196650 Anchorage, AK 99519-6650 Telephone: (907) 343-7904 U pg rade Permit Effective Dates: November 08, 2011 to November 07, 2012 Design Engineer: FLATTOP TECHNICAL SERVICES Subdivision: VALLI VUE ESTATES #2 Site Legal Address: VALLI VUE ESTATES #2 BLK 6 LT 14 G:2539 Owner/Address: TOWER FAMILY TRUST TOWER JOHN C & ZAFREN CHRISTINA TOWER / 6761 ROUND TREE DR ANCHORAGE AK 995166818 Site Mailing Address: 6761 ROUND TREE DR, Anchorage Lot Size in Sq Ft: 24954 Total Bedrooms: 4 This permit is for the construction of: Y Disposal Field Y SepticTank N Holding Tank N Privy N Private Well N 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 wastewater code requires inspections during the installation. The engineer must notify the Development Services Department at least 2 hours prior to each inspection. Provide notification by calling (907) 343-7904 (24 hours). 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather must either: A. Open and Close on the same day. B. Covered, sealed, and heated to prevent freezing. Received By '/' /'.~ / Date: i ~ ///'////, .ate: MUNICIPALITY OF ANCHORAGE Community Development Department-- e~~.~ ,,,,, Development Services Division On-Site Water & Wastewater Program Mayor Dan Sullivan Phone:907-343-7904 Fax:907-343-7997 ON-SITE SEWER/WELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. O, Property owner(s) ~/~ ,";.r ~,~c,,.~,.~ Day phone Mailing address I Site address · Legal description (Sub'd., Block & Lot) Lo t' Legal description (Township, Range & Section) 'Lot Size _Sq. Ft. THIS APPLICATION IS FOR: ([~ all that apply) Absorption Field [] Septic Tank [] 'Holding Tank [] Privy [] Private Well [] Water Storage [] Number of Bedrooms THIS APPLICATION IS AN.' Initial [] Upgrade [] Renewal [] THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR: I certify that the above information is correct. I further certify that this application is being made for a Single Family Dwelling and is in accordance with applicable Municipal Codes. iSignature of property owner or authorized agent) Permit/Rush Fees: ,~-.~ ~ Date of Payment:. i1'- ~'-~ Receipt Number:_ 01~-~'(~ Permit No. C~S ~ Waiver Fees: Date of Payment: Receipt Number: Waiver No. G:\Building\On Site\Forms\Client Forms\Permit App_010411 .doc (Rev. 1/11) FLATTOP TECHNICAL SERVICES CIVIL & ENVIRONMENTAL ENGINEERING * ENERGY CONSERVATION & ANALYSIS TED MOORE, P.E. PH.IFAX: (907)345-1355 E-Mail: tgmoorei~gci.net M.O.A. DSD P.O. Box 19-6650 Anchorage, AK 99519 November 3,2011 14530 ECHO CANYON ROAD ANCHORAGE, AK 99516 Dear Sirs: The purpose of this letter is to provide the required design narrative in support of our application for a permit to upgrade the wastewater disposal system serving the existing 4-bedroom residence on Lot 14, Block 6, Valli Vue Estates, Unit #2, located at 6761 Round Tree Drive. The existing soil absorption presently appears to be operating in a surcharged condition. A site plan, design drawings and specifications and soils log are enclosed for your review. I noticed that the Muni CAMA site erroneously classifies the house as a 5-bedroom residence; so I informed the owner, and she is in the process of getting the Municipal appraiser to reclassify the home as a 4-bedroom residence. Test hole #1 was dug to a depth of 20 feet on 10/27/2011 to evaluate soil conditions relevant to the design of the soil absorption system upgrade. A stratum of clean gravelly sand was encountered between 3.5 feet and six feet, and again from 10 feet extending down to the bottom of the test hole at 20 feet. No groundwater was encountered or observed after 7 days of monitoring. The percolation test demonstrated that the native sand percs significantly faster than 1 minute per inch, which is typical for clean sand. This material will provide excellent wastewater filtration and treatment. I believe that the appropriate absorption surface sizing criteria for this type of material should be 1.2 gpd/sq, ft, which for a 4-bedroom residence yields a required trench sidewall area of (4 x 150)/1.2 = 500 square feet. In order to optimize the effective trench sidewall area in contact with the sand stratum I have designed the trench bottom to be at 14 feet below ground level and the pipe invert at 3.5 feet below ground level. This means that the total gravel depth below the pipe invert will be 10.5 feet, but I have not counted the 4 foot thick stratum of silty gravel encountered between 6 and 10 feet below ground level. Thus, the effective sidewall height is 6.5 feet on the uphill side, and a little less on the downhill side of the trench. Using a conservative average sidewall height of 6.25 feet, this proposed 48-foot long trench will have a total effective absorption area of 6.25 x 2 x 48 = 600 square feet. The proposed upgrade is not expected to have any 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. L13, B6 SEPTIC AREA L18 B6 RETAIN EXISTING CONCRETE RING - SEEPAGE PIT .,-'" SEPTIC .../ AREA "-, INSTALL DBL. C.O & BULL RUN DIV. VALVE ..~; 15% SEPTIC AREA L17 B6 NEW LONG SOIL ABS TRENCH w. 11' TOTAL DECOMMISSION ~ 1250 G. SEPTIC TANK INSTALL NEW L16 B6 SEPTIC AREA L15 B6 ,"- SEPTIC TANK SEPTIC / / SYSTEM / o LOT 14, BLOCK 6 VALLI VUE EST. #2 -- WATER SERVICE LINE ROUND TREE DRIVE NOTE: ALL LOTS IN VALLI VUE S/D ARE SERVED BY A COMMUNITY WATER SYSTEM. THE CLASS "A" WELL IS 200'+ FROM THE SUBJECT LOT LOT 14, BLOCK 6, VALLI VUE ESTATES, UNIT ~2 SEPTIC SYSTEM UPGRADE SITE PLAN FLATTOP TECHNICAL SERVICES 1 INCH = 50 FEET 14530 ECHO CANYON ROAD DRAWN BY TFM ANCHORAGE, ALASKA 99516 NOVEMBER, 2011 NOTE: THIS IS NOT A SURVEYED PLAT. ALL LOCATIONS SHOWN ARE APPROXIMATE. "A" M~ONITOR TUBE 48 EXISTING SEEPAGE PIT MONITOR TUBI CONSTRUCT NEW 48-FOOT LONG SOIL ABSORPTION TRENCH w. 10.5' SEWER GRAVEL BELOW HORIZ. DISTRIBUTIONPIPE FROM NEW FDN. C.O. PLAN VIEW SCALE 1 '" = 10' CLEANOUT MONITOR TUBE MOUND BACKFILL 6" ORIGINAL GROUND FILTER FABRIC 4" DIA. D-30~ OR F-810 PERFO~TED DIST. PIPE 1/2" - 2 1/2" SEWER G~VEL -- BOTTOM OF EXCAVATION CONSTRUCT 48-FOOT LONG SOIL ABSORPTION TRENCH w. 11.0' TOTAL SEWER GRAVEL CROSS~ECTION "A - A" SCALE: 1" = 5' C.O. INST~L "BULL RUN" DIVERTER VALVE DBL. C.O. INSTALL NEW 1250-GALLON SEPTIC TANK 14 10.5 11 LOT 14, BLOCK 6, VALLI VUE ESTATES #2 SEPTIC SYSTEM UPGRADE PLAN AND CROSS-SECTION FLATTOP TECHNICAL SERVICES 14530 ECHO CANYON ROAD ANCHORAGE, AK, 99516 SCALE: AS SHOWN DRAWN BY: TFM NOVEMBER, 2011 TEST HOLE # 1 LEGAL DESCRIPTION: DATE PERFORMED: PERFORMED FOR: FLATTOP TECHNICAL SERVICES 14530 ECHO CANYON ROAD ANCHORAGE, ALASKA 99516 SOILS LOG -- PERCOLATION TEST Lot 14. Block 6. Valli Vue Estates. Unit October 27, 2011 Chris Zafren. executor for Dr. John Tower DEPTH -- (feet) GM Fill material Pt. original organics SM Reddish sandy loam GM Silty gravel SP Clean gravelly sand some cobbles same as lower stratum GM/ML Very silty gravel Dense, few cobbles SP Clean gravelly sand some cobbles Same as upper stratum More rounded cobbles nearer to bottom SLOPE Depth to Groundwater Date No groundwater 10/27/2011 Monitor tube dry 11/3/2011 SLO~ SITE PLAN 19 Date Reading Clock Net Time Percometer Net Drop Time (minutes) Reading (inches) 10/27 5-gallon presoak 12:39:20 24 12:40:20 I 17 1/2 6 1/2 Re-soak 12:45:25 27 3/4 12:46:25 I 21 3/4 6 12:47:25 I 18 1/4 3 1/2 Add water 12:48:10 26 12:49:10 I 21 5 12:50:10 ! 17 3/4 3 1/4 COMMENTS: PERCOLATION RATE <<1 (minutes/inch) PERC HOLE DIAMETER 6" TEST RUN BETWEEN 4.75 FT AND 5.25 FT The sandy strata perc at significantly faster than one minute per inch. Use 1.2 gpd/sq, ff. for design of abso .rption system, PERFORMED BY FLATTOP TECHNICAL SERVICES. Ted Moore ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. CERTIFY THAT THIS TEST WAS PERFORMED IN DATE: I! / ~' / ~,.o It o~lattop TeclinicalServices 14530 ~Eclw Canyon POad, AncboroOe, AK 99516 Phone (907) 345-1355 Lot 14, Block 6, Valli Vue Estates, Unit #2 6761 Round Tree Drive Wastewater disposal system upgrade Specifications 1.0 General: 1.1 The scope of the project consists of decommissioning and replacing an existing 1250-gallon septic tank and constructing a 48-foot long soil absorption trench with 10.5 feet of sewer gravel below the horizontal distribution pipe (total gravel depth = 11.0 feet). 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 Unless agreed otherwise, the contractor shall be responsible for any tree clearing and grubbing necessary to complete the project. 1.5 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. 1.6 Unless specifically agreed otherwise, the homeowner shall be responsible for finish grading after the soil is compacted, and seeding all areas disturbed by the construction. 2.0 Septic Tank: 2.1 The existing 1250-gallon, steel septic tank shall be properly decommissioned per code. 2.2 A new 1250-gallon Municipally approved septic tank shall be installed closer to the house in the general location indicated on the site plan. 2.3 All pipe connections to the tank shall be equipped with waterproof mechanical couplings. 2.4 A double cleanout shall be installed in the discharge line downstream of the septic tank, as well as a "Bull Run" diverter valve allowing future reconnection to the existing concrete ring seepage pit. 3.0 Soil absorption system: 3.1 The soil absorption system shall be constructed by excavating a 14-foot deep by 48-foot long trench, as shown on the site plan and design drawings. 3.2 The bottom of the trench excavation should be level. 3.3 A total of 11.0 feet of sewer gravel shall be placed in the trench excavation with the perforated distribution pipe laid level such that the pipe invert is no less than 10.5feet above the bottom of the sewer gravel. 3.4 The distribution pipe shall be 4" diameter ASTM F-810 or D-3034 perforated pipe. Monitor tubes and cleanouts 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, prior to backfill. 3.6 The backfill shall be mounded a minimum of 6 inches above original ground level. 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 seed to promote rapid revegetation. 4.0 Inspections: 4.1 A minimum of 4 engineering inspections will be required during the course of the project: (1) initial stakeout with the contractor to establish the location of the 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 conforms with the soil test information, (3) after the sewer gravel is in place and the distribution pipe has been laid and connected up to the septic tank, but prior to placement of filter fabric, and (4) after roUgh backfill and grading is complete. The septic tank installation inspection shall be in conjunction with one of the other listed inspections. 4.2 The installer shall coordinate the timing of the inspections with the engineer sufficiently far in advance to ensure the availability of the engineer. ~GRE ER ANCHORAGE AREA BOL ~JGH Department of Environmental Quality 3330 C Street Anchorage, Alaska 99503 INSPECTION REPORT ON-SITE SEWAGE DISPO NAM~)~ : ...... UlSPOSAL SYSTEM ........ MA'L'NG^DDRESS LOCATION~ SEPTIC TANK: DISTANCE /'~0/~q D/ FROM WELL (...,>'u ~/,'~/~. ~MANUFACTURE~/~ MATERIAL~ NUMBER OF -COMPARTMENTS INSIDE LENGTH~ . INSIDE WIDTH~ ~ LIQUID DEPTH~LiQUiD CAPAC/TY/~ SEEPAGE PIT: GALLONS. NUMBER OF PITS ~. DIAMETER ~ LINI /~/Z/Z. ~:Z"~ ~ OR WIDTHs, LENGTH~, OEPT' 'z/~' / NG MATER,AL ~%~Z,,B S,~E: //~/' DIAMETER'~ DEPTH ~iSTANCE BUILDING FOUNDATION NEAREST LOT LINE~/~ TOTAL EFFECTIVE ' ~ · ABSORPTION AREA (WALL AREA~ SQ. FT. ADDITIONAL ABSORPTION - CONSTRUCTION BUILDING NEAREST FOUNDATION ~, LOT LINE_ CESSPOOL ~, OTHER SOURCES APPROVEO~ DISAPPROVED ~ REMARKS_ NEAREST SEWER LINE~, -- DEPTH SEPTIC DISTANCE FROM: SEEPAGE /~ ~ SYSTEM~ DISTANCES: 1EMARKS: DIAGRAM OF SYSTEM DATE 'ROVED GREATER ANCHORAGE ArEA BOROUGH DEPARTMENT OF" ENVIRONMENTAL QUALITY' 3330 "C" STREET ANCHORAGE, ALASka 99503 TELEPHONE 274-456 ! SEWAGE DISPOSAL SYSTEM __ APPLICATION AND PERMIT INSTALLATION LOCATION ~1~ ~J~Z __ MAILING ADDRESS ~~ FINANCED THROUGH . IEPTIC TANK TO SEEPAGE PiT WALL /~'~ ( EPTIC TANK ~, SEEPAGE PIT .J~J~_ DRAIN F,ELD ELL TO SEPTIC TANK ~) r ~, SEEPAGE p~T ~ ~ ~ PTIC TANK ~O ~ ~ ~ ' ~, SEEPAGE PIT (~' . DRAIN FIELD TO RIVER, LAKE. STREAM, DIAGRAM OF IRTIFy THAT I AM FAMILIAR WITH THE REQUIREMEN 3201Spenard Road Anchorage,Abska 99503 (90~ 272-2407 WOODWARD- LUNDGREfl & ASSOCIATES, INC. August ZO, 1973 Job No. A12%09-14 Falcon Masonary Construction P.O. Box 41513 Anchorage, Alaska 99509 Gentlemen: Test Pit Excavation Lot 14, Block 6 Valli~Vue Estates Anchorage, Alaska At your request, the undersigned inspected the subject exca- vation and logged the vertical soil profile on August 10, 1973. A sketch of our unde.rstanding of the proposed development is shown as Figure 1 and the soil profile of the excavation is shown in Figure 2. The soils were visually classified and absorption values signed accordingly on the basis of our experience and by written guidelines of the Greater Anchorage Borough. Absorption values are given under "Remarks" in Figure 2. If we can be of any further service to you, please call. Very truly yours, WOODWARD-LUNDGREN & ASSOCIATES Rodne~P. Kinney, P.E. · Chief Engineer RPK:nck cc CAKE, DEQ Atten. Sue Dikerson OAKLAND SAN JOSE SAN FRANCISCO ANCHORAGE, ALASKA N ,160 ~ROUND' TREE DCClVE ~ $1"TE PLAN - FI(~U~'E I AppROX. SCALE; 1"-30' NOTE; TAKEN Ft~O M'A GC,C,,/HOK PLAN DA T E D WOODWARD-LUNDOREN & ASSOCIATES ii, ;~{ ~ ,_ 0 ~ ~ ~ ~ .... Consulting Soil Engineers SAMPLE 'DESCRIPTION, color~ moisture, p~rticle size, consistency ~.EOuJ~J J'/~ ~' and Geologists /7,~' ~t. _ . C' :::.. 6eologist /'~ ~ (drilling of casing, casing bio,rs fluid loss, bi~ cond - tion~ crowd~ rprn~ e~c.) ~'/~ -85 FIG, 2 ;~' = Ol i. 3330 R~(,~IVED GREAT£R ANCHORAGE ARE,S gOROUGH Department of Environmental QualitySEP "C? st., Anchorage, Alaska 99503 REQUEST FOR APPROVAL OF INDIVIDUAL SEWER & WATER FACILITIES 1. Type of Inspection: CMRO VA FHA CONV 2. Property Owner: 3ohn C. Tower, M.D. & Elizabeth A. Tower, XX Mailing Address: 3300 Providence Dr., Anch. D~Z Phone 279-6461 3. Name of Buyer: same Mailing Address: 4. Name of Lending Institution: Mailing Address: Box 4-2090 (99509) 5. Name of Realtor or Agent: - - - - Mailing Address: Da_~y Phone The First National Bank of Anchorage Phone 274-1521 Phone Legal Description: .Lot 14~ Blk. 6, Valli Vue Estates Unit No. 2 Location: 6761 t~ound Tree Drive, Anchorage 7. Type of Facility to 8. Water Supply Type of Supply: If Individual, be i ns pected Single Family Dwell~.~-~ : Bdrms. Public Utility ×X IndiVidual number of dwellings presently .served If Individual, depth of well Sewage Disposal-System Type.of System: Public Utility If Individual, date of installation Individual (on-site) 4