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Home My WebLink AboutSNOWBIRD LT 102AOnsite File Snowbird Lot 102A #151-152-23 Previously T15N R1W Sec 8 L102 Permit Number: OSP121117 Tax Code Number: 05115203000 Work Type: WelISeptic Permit Effective Dates: June 18, 2012 On-Site Water & Wastewater System Permit 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 Initial to June 18, 2013 Department Design Engineer: ANDERSON ENGINEERING Subdivision: T15N R1W SEC 8 Site LegalAddress: T15N R1WSEC 8 LT 102 G:1256 Owner/Address: JOHNSON RICHARD E & PAULA C LIVING TRUST JOHNSON R E & P C/TRUSTEES 20246 MCK[NLEYVIEW AVENUE CHUGIAKAK 99567,~ Site Mailing Address: Lot Size in Sq Ft: 108900 Total Bedrooms: 3 This permit is for the construction of: Y Disposal Field Y Septic Tank N Holding Tank N Privy Y 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: /'~.~ ~ ate: Date: ~/~,/~ MUNICIPALITY OF ANCHORAGE Community Development Department Development Services Division On-Site Water & Wastewater Program Mayor Dan Sullivan Phone: 907-343-7904 Fax: 907-343-7997 ON-SITE SEWERNVELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. 05t-152-03 Property owner(s): Troy Davis Homes, Inc. Mailing address: 165 E, Parks Highway, Wasilla, AK 99654 Site address: McKinley View Avenue Legal description (Sub'd., Block & Lot): BLM Lot 102, Section 8, TISN, R1W Legal description (Township, Range & Section) Lot Size: '108,900 Acres Number of Bedrooms: Three (3) Day phone: 357-9394 THIS APPLICATION IS FOR: ([~ all that apply) Absorption Field X Septic Tank X Holding Tank [] Pdvy [] Private Well X Water Storage [] THIS APPLICATION IS AN: Initial X 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. (Signature of property owner or authorized agent) Permit/Rush Fees: Date of Payment: Receipt Number: Permit No. Waiver Fees: Date of Payment: Receipt Number: Waiver No. C:\Users~And Eng~,Desktop',MikeW15N BLM 198\Permit Application Lot 198A.docC:~Users~AndEng~Desktop\Mike\T15N BLM 198\Permit Application Lot 198A.doc June 6, 2012 Municipality of Anchorage Development Services Department On-Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Su~e~: BLM Lot 102, Section 8, T15N, R1W Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of BLM Lot 102 intends to construct a new three-bedroom home on the lot. We are therefore requesting a permit be issued for the construction of a new well and septic system to accommodate the home. The attached Site Plan and backup documentation identify the location and configuration of the proposed septic system along with the alternate site. No existing wells are closer than 100' from the proposed septic system. Drainage arrows are shown on the site plan showing the grade and direction of flow on the lot. The drainage pattern will not be changed as a result of this project. The test holes placed on the tract in the area of the absorption trench and alternate site indicated clean sand (SM/SP/SW) material with some silt. The percolation rate of the soil was determined to be 2.5 minutes per inch. No groundwater was found during the placement of the test holes and none was noted during the monitoring period. An application rate of 1.2 gallons per day per square foot was used in the design of the absorption system. We are proposing to place a new 1,000-gallon septic tank and a 38' long by 5' wide by 4' effective depth absorption trench to treat and dispose of the effluent generated in the house. The elevation of the distribution line in the absorption trench will be 3' below the surface and the total depth will be 7'. A minimum of 3' of fill or 2" of insulation and 2' of fill will be placed over the absorption trench and 4' over the septic tank. The ground surface on the lot in the area of the absorption trench slopes from the east to the west at 2% and the ground surface is virtually fiat. A steep slope is located in the back of the lot which drops down to the flat area. The new trench will be constructed parallel with the contours of the slope as much as possible in conformance with BLM Lot 102, Section 8, T15N, RIW June 6, 2012 Page Two Municipal requirements. The new septic system will be constructed a minimum of 100' from all wells and any surface water and 10' from the proposed and existing water services in the area. If the system is constructed in accordance with our design the following statements apply: The system, if constructed as designed, will have no adverse impact on the wells in the area or those to be constructed in the future. The system, if constructed as designed, will have no adverse impact on existing septic systems in the area or those to be constructed in the future. The system, if constructed as designed, will have no adverse impact on reserve space, either surface or subsurface, on any lots located in the area. The system, if constructed as designed, will have no adverse impact on drainage patterns in the area. The current drainage pattern will be maintained. Sincerely, Michael E. Anderson, P.E. Attachments / ApplicoUon \ %~1 I~ .~' ~ .'.: ~"~ I ,..OA~. F.F. 177 I ~. ,,ooo ~o,o. ~L~_~ co · ~ LOT 102 LOT 102 2C0 - Double Cleon Out ] j NOTE; No Areos of Excessive Slope or Su/foce WoOer ore Within 100' of Any Port of the New Septic System. Nsg'58'OO"W 330.00 107 STTE PLAN SCALE 1# = 50' BLM LOT 102, SECTION 8, T15N, R1W DESIGN FACTORS: SYSTEM REQUIREMENTS: Three Bedroom Home 5' Wide Trench System Perc. Rate: 2.5 Min./Inch 1,000 Gallon Septic Tank Application Rate: 1.2 GPD/SF 4' Drainfield Rock 3 Bedrooms X 150 GPD/1.2 GPD/SF(Application Rate) = 375 SF Absorption Area 375 SF/5 SF/LF*.5 (Red. Factor) = 37~5 LF Trench Length THEREFORE: Construct a 38' Long x 5' Wide x 4' Effective Depth Aborption Trench at the Location Shown. Flow Line Elevation in Trench to be 3' Below Original Ground Surface. Total Depth to be 7' Below Existing Ground. Provide 3' of Cover Over Trench and 4' Over Tank or Provide 2" of Insulation and 2' of Cover. Maintain 10' Separation From Water Services in the Area. /./~N at u ral~'""'--~ Backfill Geotextile -- Fabric 4" Perforated -- PVC (Holes Down) -- Drainfield Rock TYPICAL DEEP TRENCH SECTION. -- ~SCALE----~E~~-- NOTE: Grade Are,a, Over Trench to Drain Away. ~'~/ ,4.g,.t h ~'%~ Minimum 6 Separation From Bedrock. Minimum 4' Separation From Cround,~ata,. ~'7;..," 'Z';:";',_'""'"'"='~' '~~ Minimum 100' Separation From Private Wells in the Area. o~: Michael E. Anderson /.~,~, Minimum 100' Separation From Surface Water or Streams. ~. ~'.d Minimum 10' Separation From Water Service Line. '~'."~',~"?~.."k-4-'~'_~~.,r,~. ~ ,;,'~' &700 DE~H (~) 1 2 3 4 6 7 8 9 11 20¸ MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT BRAGAW STREET ANCHORAGE, AK 99519-6650 LEGAL DESCRIPTION: PERFORMED FOR: DATE: 4/15/2_012 PARCEL ID#: SOILS LOG - PERCOLATION TEST ELM LOT IOZ 0B/0G SILTY GRAVEL WITH SAND GM B0H @ TROy DAVIS HOMES. INC. PROJECT No.: TECHNICIAN: FlEA SLOPE SITE PLAN · TH2 · THI WAS GROUND WATER ENCOUNTEKED? NO DEPTH TO DATE READING GROSS TIME NET TIME WATER NET DROP (YlINUTES) (MINUTES) (INCHES) (INCHES) TEST HOLE PRESOAKED PRIOR TO TESTING: 4/5 1 12:14 1.63" 2 12:24 10 5.87" 4.24" 3 12:25 ].50" 4 12:35 10 5.50" 4.00" 5 12:36 1.75" 6 12:46 10 5.75" 4.00" PERCOLATION RATE: 2.5 (MmaNCH) PERC. HOLE DIA. 6" (mc}ms) TEST RUN BETWEEN: 3.5 FT. and 4.5 FT. COMMENTS: TEST HOLE PRE SOAKED PRIOR TO TEST. TEST PERFORMED BY ANDERSON ENGINEERING. I, MICHAEL E. ANDERSON CERTIFY THAT THIS WAS PERFORMED IN ACCORDANCE WITH ALL'STATE AND MUNICIPLE GUIDELINES IN EFFECT ON THIS DATE: 4126/[2 4700 [ DEPTH (fe~t) 1 2 3 7 8 9 11 20¸ MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT BRAGAW STREET ANCHORAGE, AK 99519-6650 SOILS LOG - PERCOLATION TEST LEGAL DESCRIPTION: BLH LOT 102 PERFORMED FOR: TROY DAVIS HOM[-$, lng, DATE: A/15/20!2 PROJECT No.: PARCEL ID#: TECHNICIAN: OB/OG SILTY GRAVEL WITH SAND GM WAS GROUND WATER ENCOUNTERED? IF YES ~ WHAT DEPTH?.__ DEPTH OF WATER AFTER MONITORING: BOH @ I$' MEA SLOPE NO NONE ~0 SITE PLAN TH2 · THI 2% ~ DATE OF MONITOPffNG: &/25/2012 DEPTH TO DATE READING GROSS TIME NET TIME WATER NET DROP (MINUTES) (MINUTES) (INCHES) (INCHES) TEST HOLE PRESOAKED PRIOR TO TESTrNG: 4/5 1 12:18 .75" 2 12:28 10 4.25" 3.50" 3 12:29 .87" 4 12:39 10 4.37" 3.50" 5 12:40 .75" 6 12:50 10 4.25" 3.50" PERCOLATION RATE: 2.8 CMIN/INCH) PERC. HOLE DIA. 6" CNCHES) TEST RUN BETWEEN: 3.5 FT. and 4.5 FT. COMMENTS: TEST HOLE PRE SOAKED PRIOR TO TEST. TEST PERFORMED BY ANDERSON ENGINEERING. I, MICHAEL E. ANDERSON CERTIFY THAT THIS WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPLE GUIDELINES IN EFFECT ON THIS DATE. 4/26/12 ON-SITE WASTEWATER DISPOSAL SYSTEM CONSTRUCTION AND MATERIAL SPECIFICATIONS SUBJECT: BLM LOT '1102, SECTION 8, TI5N, R'1W GENERAL: The scope of this project includes the procurement and placement of a new 1,000-gallon septic tank at the location shown on the Site Plan. Work also includes the construction of a 38' long by 5' wide by 4' effective depth absorption trench also at the location shown on the plan. The distribution line in the trench will be placed at 3.0' below the existing ground surface. Total depth of the trench will be 7.0' below the existing ground surface. The new absorption trench must be placed a minimum of 100' from all wells in the area and 100' from any surface water in the area. The septic system must also be a minimum of 10' from the water service line on the lot. A minimum of 3' of cover is required over the absorption trench and 4' of cover over the septic tank. Construction shall be in accordance with the approved site plan, design drawings, Municipal Permit with any special provisions or conditions, and all applicable State and Municipal Wastewater Disposal Regulations. The Contractor shall be responsible for obtaining all underground utility locates and for the layout of the septic system and verification of the location of all lot lines. The Contractor must also verify the location of wells in the area and assure that the separation distances are met. Unless specifically agreed otherwise, the contractor shall be responsible for final grading areas subsequently depressed from soil settling. Property owner shall be responsible for revegetation of affected areas unless specifically agreed otherwise. Contractors installing wastewater disposal systems must be certified by the Municipal Department of Building Safety On-Site Water and Wastewater Program for system installations. Owners installing their own systems must receive prior approval from the On-Site Water and Wastewater Program before beginning system installation. SEPTIC TANK INSTALLATION 1. A new 1,000 gallon septic tank must be procured from an approved soume and installed at the location shown. 2. A septic tank is to be constructed by a certified septic tank manufacturer. Construction shall include two 4" cleanouts for pumping access. BLM Lot 102, Section 8, TISN, RIW June 6, 2012 Page 2 of 3 3. The septic tank shall be sufficiently bedded to prevent settling or shifting of the tank. 4. All standpipes on the septic tank shall extend a minimum of 12 inches above final grade. 5. Tanks installed without 4' of cover shall have a minimum of 2" of direct burial insulation. 6. A foundation cleanout shall be installed one to four feet from the building foundation. Two cleanouts are required between the tank and the drainfield. 7. Final grading over the tank shall be such that a positive slope exists away from the septic tank. DRAINFIELD CONSTRUCTION: 1. The drainfieid shall be constructed to the dimensions shown on the design. The bottom of the trench shall be within 2" of level. Distribution piping must be placed level with perforations down atop a level bed of drainfield rock. Rock should then be placed over the pipe to provide a minimum of 2" of cover. 3. A silt barrier or geotexfile fabric must be placed between the drainfield reck and the natural soil backfill. 4. Monitor tubes must be 4" in diameter and installed at the locations shown on the design. The portion below the distribution line must be perforated. Contractor shall verify the septic tank and drainfield are a minimum 100' away from any private water wells in the area, 150' from a Class "C" Well or 200' from any community well. Direct bury insulation must be placed over the distribution system if less than 3' of backfill depth is available. Finish grade over the trench must be mounded to prevent settlement or depressions. 7. Grade area surrounding the absorption trench to drain away. A minimum 2' of accepting soil is required below the drainfield rock for absorption trenches. All pockets of unacceptable materials must be removed and replaced. BLM Lot 102, Section 8, TI5N, RIW June 6, 2012 Page 3 of 3 MATERIAL SPECIFICATIONS: 1. Septic tanks must be constructed by a municipally approved septic tank manufacturer. 2. The following pipe materials ara approved for use in septic system installations in the Municipality of Anchorage: Cast Iron (perforated and solid), ASTM D3034 or P.V.C. (perforated and solid), ASTM F810 or H.D.P.E. (perforated, but not solid) and ASTM D2662 or A.B.S. (perforated and solid). 3. Insulation shall be at least 2" thick extruded diract burial polystyrene (Dow Chemical Co. Styrofoam HI or equal). 4. Septic tank inlets and outlets shall be fitted with watertight couplings (Caulder, Fernco, or equal). 5. A permeable geotextile fabric (Typar, Mirafi or equal) must be installed between the final drain rock layer and the native soil layer. 6. All drain rock shall be .5" to 2.5" in diameter with less than 3% passing the #200 sieve. INSPECTIONS: Municipal Ordinance requires a minimum of two inspections. These inspections must be conducted under the supervision of a professional engineer registerad in the State of Alaska. The first inspection must be conducted after the excavation of trenches, beds or pits and before the installation of any gravel. A septic tank may be set in place, but may not be backfilled. The second inspection must be conducted after the placement of the geotextile fabric, gravel, distribution piping, standpipes, cleanouts and insulation. No backfill should be in place at the time of inspection. Contractor shall provide a copy of all field survey layout and construction notes for use in praparing the certified as-built of the completed system. COSA Checklist Legal Description: SNOWBIRD LOT 102A Parcel ID: 051-152-23 If more than 1 septic system on lot: COSA Checklist # of Structure served by this system A. WELL DATA Well log is filed with Onsite (or attached) Date drilled 6/20/201 Total depth 124 ft Cased to 122 ft Sanitary seal is functioning correctly Wires are properly protected Casing height (above ground) 18+ in. Date of flow test for COSA 9/9/2020 Static water level at beginning of test 41 ft. Well production at time of test 4.3 gpm Water storage tank volume NA 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 of Sample 9/17/2020 Comments __________________________________________________________________________________ B. TANK DATA Age of tank(s) 8 years Tank type/material SEPTIC / STEEL Measured operating fluid level in septic tank 48” Standpipes/foundation cleanout per record drawing Date of pumping 9/9/2020 C. LIFT STATION Required maintenance completed Age of lift station years Lift station material Comments: D. ABSORPTION FIELD DATA Which system tested (date installed) 6/20/2012 ALL standpipes present per record drawing Total measured depth from grade 7.3 ft (max) Measured depth to pipe invert from grade 3.3 ft (min) N/A – pressurized field Monitor tubes go to bottom of effective. If not, state depth into effective Code-required soil cover over field System presoaked (Required if vacant for greater than 30 days prior to date of test) Gallons introduced gallons Adequacy test date 9/9/2020 Results Pass For 3 bedrooms Fluid depth prior to test 0 in Water added 490 gal New depth 1 in Elapsed time 10 min Final fluid depth 0 in Absorption rate 450 gpd Any rejuvenation treatment (past 12 months) N If yes, enter date Comments/Deficiencies: E. SEPARATION DISTANCES From Private Well on Lot to: (Please enter distances if less than required or if community well) Septic Tank/Lift Station on Lot > 100’ Yes if No ft Neighboring Tank > 100’ Yes if No ft Absorption Field on Lot > 100’ Yes if No ft Neighboring Absorption Fields > 100’ Yes if No ft Community Sewer Main > 75’ Yes if No ft Community Sewer Manhole/Cleanout > 100’ Yes if No ft Private Sewer/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 From Septic/Holding Tank on Lot to: (Please enter distances if less than required) Building Foundations > 10’ Yes if No ft Property Line > 5’ Yes if No ft Absorption Field > 5’ Yes if No ft Water Main > 10’ Yes if No ft Water Service Line > 10’ Yes if No ft Surface Water > 100’ Yes if No ft Wells on Adjacent Lots: Private Wells > 100’ Yes if No ft Community Wells > 200’ Yes if No ft If septic tank is under driveway comment below From Absorption Field on Lot to: (Please enter distances if less than required) Building Foundation > 10’ Yes if No ft Property Line > 10’ Yes if No ft Water Main > 10’ Yes if No ft Water Service Line > 10’ Yes if No ft Surface Water > 100’ Yes if No ft If absorption field is under driveway comment below Wells on Adjacent Lots: Private Wells > 100’ Yes if No ft Community Wells > 200’ Yes if No F. ENGINEER’S COMMENTS G. ENGINEER’S CERTIFICATION I certify that I have determined through field inspections and review of Municipal records that the above systems are in conformance with MOA COSA guidelines in effect on this date. 9/28/2020