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Home My WebLink AboutSKYHILLS PH 3 BLK 2 LT 65kyhills Block Lot 6 #011 - 122-33 '~ Municipality of Anchorage Page ! Department of Health and Human Services Division of Environmental Services On-Site Services Secfio~ 825 'L' S~eet Room 502 P.O. Box 196650 Anchorage. AK 99519~650 wew.ct.anchorage.ak.us (907) 343-4744 ON-SlIE WASlEWAI~R DISPOSAL SYSTEM ANDIOR WELL INSPEClION REPORI Permit Number: SW000242 PID Number: 011-122-33 Stacy & Heidi Tomuro WastewaterSystem: New P.O. Box 190664 Anchorag% AK 99519 ABSORPTION FIELD 341-3332 Four (4) Deep Trench LEGAL DESCRIPTION 1.2 c~e 10.5 2 6 Skyhills No. 3 3.5 F,. 7 9.5 F,. 37.5 Well: City Water o,,,~ ,.,~: 4 .. F,. n 525 ~e ASTM D3034 PVC .. Spinell Homes 8/11-14/00 · ,..:~-~,. i.,,,...~.,:.,, ic.~, ,~,~o.~,,.:.,~ TANK SEPARATION DISTANCES E3 septic [-] Holding f-I S.T.E.P. l'-) Othec. Tank FWd Sta~o. Tank S~-,~,U,~ Anchorage Tank 1,250 w., >200' >200' N/A N/A >25' Steel Two (2) Mu.s~'"w~ >100'>5. >100'>10. N/AN/A N/AN/A ~ ~,,: LIFIo~STATION,~.~,~ - NONE ON LOT ~.,.~ >5' >10' N/A N/A *'~"~'~"~ ~'~"~"~ c~.,.~,None Noted ~""~°"'~ ""='": BENCH MARK Garage Slab 100.0 E~ginee~$ Stamp Inspections performed by: Mike Anderson Dates: 1" 8/11/00 ,. 2~ 8/14/00 Department of Health and I-~.uman Services approval I 2 -- .......... Municlp~lit~ of Anchorage .... DEVELOPMENT SERVICES DEPARTMENT 4700 South Bragaw Street Anchorage, AK 99519-6650 - 343-7904 On-Site Wastewater Disposal System or Well Inspection Report Permit Number SW000242 £VENSON COURT PID NO. 011-122-33 LOT 2 75..'.'.%1' 20' l&[ £A.~[MENT Page20~3 ' ~ LOT 6 29.6 Four Bedroom Home A B Sl 59.3 65.0 S2 68.3 73.5 C4 121.0 128.5 M1 122.1 125.5 C5 120.9 123.5 S1 C2 C3 Alternate Site THC THB SCALE 1" = 40' LOT 7 Municipality of Anchorage DEVELOPMENT SERVICES DEPARTMENT 4700 South Bragaw Street Anchorage, AK 99519-6650 - 343-7904 On-Site Wastewater Disposal System or Well Inspection Report Permit Number $W000242 PID No. 011-122-33 Page 3 of 3 52.2 · 80~ 0 91 o0 · brainfield .l~ock · 80.3 73.4 63.5 ·i PROFILE AS,BUILT 10' Municipality of Anchorage Department of Health & Human Services 825 L Street, Anchorage, AK 99502-0650 SOILS LOG * PERCOLATION TEST Performed For:. StncyTemuro Legal Description: Let 6. Block 2. Sky Hills. Phase III SLOPE Date Performed: "g.'%. ^ ,.%',,._~.' ._, -, -;~_~, {:..'2.:~~~ ..................... ...',3-~4- SITE PLAN 8 9 10 11 12 13 14 15 16 17 18 OG~T Fine Sand Some Silt SP Was Groundwater Encountered? No S If Yet, What Depth? L Depth to Water O After Monitoring P Date: E Bottom of Hole Reading Date Gross Net Depth To Net Time Time Water Drop I 14-Aug 1:10 1" 2 1:20 10 6.13' 3 1'21 1.25" 4 1:31 10 6.25" 5' 5 1:32 1 · 6 1:42 10 6" 5' Perc. Rate: 2 Min./Inch Perc. Hole Diameter:. 6' Test Run Between 4 Ft. and 5 FL Comments: Percolation Cavity Presoaked Prior to Testing. Performed By: Mike Andemon. I, ~ Certify That This Test Was Performed In Accordance With Ail State and Municipal Guidelines In Effect On This Date: 8111100 Municipality of Anchorage -__ ~ I~ r ~epartment o~ ~ ~ Ih~blic Works Bttildlng Safety Dn s on P.O. Box 19GG50 * 4700 S. Bragaw Street ~Machoragc, Alaska 90519-C'G50 · (907) 843-8301 h t tp://wwxx-.cLm~cho~lgc.nk.us 6/8/2001 Stacy & Heidi Tomuro PO Box 190664 Anchorage AK 99519 Subject: On-Site Water and/or Wastewater Permit. Permit Number: SW000242 Parcel ID: #011-122-33 Dear Staey & Heidi: An On-Site Water/Wastewater Permit, number SW000242, issued by this office for a single-family system, will expire on July 18, 2001. This permit was valid for 365 calendar days. If this was a well permit and the well has been drilled, a well log must be sent to this office for documentation of the installation and to close the permit. If this permit was for a wastewater disposal system, an original as-built inspection report must be sent to this office for review, approval and documentation. This as-built inspection report must be signed by the licensed Professional Engineer who inspected the installation of the system. As-built inspection reports are required to be submitted within 30 days of the completion of the system. If no system was installed under this permit, and you are still planning to install a well or wastewater disposal system, a new permit must be obtained from this office. A ne~v permit may be issued free of charge for a second year if the application for the renewal is received on or before the date of expiration of the original permit. When applying for a new permit, the fees are: $320.00 for a wastewater permit and $120.00 for a well permit. If you have any questions, please call this office at 343-7904. Manager On-Site Water and Wastewater Program enc: Copy ofpermit ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 522-6779 (FAX) -June 30,2000 Municipality of Anchorage Department of Health and Human Services 825 "L" Street Anchorage, AK 99502-0650 Subject: Lot 6, Block 2, Skyhills Subdivision, Phase Ill Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of Lot 6, Block 2, Skyhills Subdivision, Phase III intends to construct a four- bedroom home on thelot. We are therefore applying for a permit to construct a new septic system on the lot to serve the new house. The attached Site Plan and backup documentation identify the location and configuration of the new septic system and the parameters used in the design. The lot is served by the Municipal water system and the system will be constructed a minimum of 10' from the water service line. The test holes placed on the lot in October of iast year at the locations shown revealed poody graded sand with some silt with a percolation rate of 2 minutes per inch.- No groundwater was encountered in either test hole and none was found during the ensuing water-monitoring period. We are therefore proposing to construct a deep trench system with a maximum depth of 10.5' below the odginal ground surface. The length of the trench will be 37' with an effective depth of 7'. The ground surface on the lot slopes from nodh to south at varying slopes usually sometimes as steep as 20%. The new system will be constructed parallel to the slope in conformance with Municipal requirements at the flattest area on the lot. Effluent will fall from the septic tank a total of 11' to the distribution pipe in the trench. The total distance will be neady 70' and the slope of the line will be approximately 15%. Grading will be accomplished once the system is completed so drainage is away from the trench and septic tank but in the direction of the current drainage pattern. No surface water will accumulate in the trench area. If the system Is constructed 'in accordance 'with our design the following statements apply: 1. The System, if constructed as designed, will have no adverse in, pact on the wells in the area or those to be constructed in the future. '2. 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. Lot 6, Block 2, Skyhills Subdivision, Phase III 'June 30, 2000 Page Two 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 L 'N COURT '. :"'"'..... ' '"'.. _, __ ';"-[ THIS PROJECT- 'h : 20 19 - ' t 5 23' - A - 24 "' ~ 1P 41,626 ~q. fL : AREA MAP ~?p .~ ". SCALE 1" = 100' \ ~"~' ' .'. .,.,..:::.':' .'....:..'.." '' : · ~0.041 ~.fL ~®.' 41.573 '. 33 45.103 !8-3-A 28~ H89"~'28'£ 768,34'(R) COURT 2 Four Bedroom -' House Lye De' TH '! 190' I ,~ DRAINACE-. LOT 6, BLOCK 2, SKYHILLS SUBDIVISION PHASE III DESIGN FACTORS: SYSTEM REQUIREMENTS: Four Bedroom Home Parc. Rate: 2 Min./Inch Application Rate: 1.2 GPD/SF Deep Trench System 1,250 Gallon Septic Tank 7' Dralnfield Rock 4 Bedrooms X 150 GPD I 1.2 GPD/SF = 500 SF of Absorption Area 500 SF/14 SF/ LF of Trench -- 35.7 LF Trench Length Therefore: Construct a Deep Absorption Trench System With One Lateral 36' in Length with 7' of Dralnfleld' Rock Beneath the Distribution Pipe. Distribution Pipe in Trench' Placed at 3.5' Below the Original Ground Surface. Total Depth to be 10.5' From Original Ground Surface. Insulate or Mound Over Trench to Provide a Minimum of 3' of Cover. 6'; 'Natural Backfill Geotextile' Fabric Perforated PVC (Slots Do~n) ,eld Rock I 3' I". TYPICAL DEEP TRENCH SECTION NOTE: Grade Area Over Trench ,o Drain Away. Provide 3' Cover Over Trench and 4' Over Tank or I~Z~~ ~ _ .~¢~ . Maintain 10' Separation From Lot Line. ~,~.~.(/~..%j/~~'' '* ....... %..~ . Maintain 10' Separation From Water Service Line. Municipality of Anchorage' ' Department of Health & Human Services 825 L Street, Anchorage, AK 99502-0650 SOILS LOG - PERCOLATION TEST . Performed For:. Bob Klein · Legal DescHp{i0n: Lot 6. Block 2_ Sky Hills. Phnse III 'SLOPE OG/PT 1 11 Was Groundwater ' Encountered? No If Yet, What Depth? Depth to Water ; Fine Sand After Monitoring None Some Silt · Date: 10/10/99 SITE PLAN. 0% 10% '12 · 13 ;4 15 17 10 · SP Bottom of Hole Reading Date Gross: Net DepthTo Net ·" Time Time' Water Drop I 23-Sep 10:21 1'~ 2 10:31 10 6" 5" · 3 10:32 1.25' 4 10:42 10 6.25' 5' 5 10:43 - 1" 6 10:53 10 6" ' 5" Perc. Rate: 2 Min.Jln~:h Perc. Hole Diameter: 6' Test Run Between 7 FL and 8 Ft. Comments: Percolation Cavity Presoaked Prior to Testing. Performed By: Ed Sanderson, - . I, ~j.~ Certify That This Test Was Perform~ed In Accordance With ,,cji State and Municipal Guidelines In Effect On This Date: 10/20/99 Municipality of Anchorage Department of HeaRh & Human Services 825 L Street, Anchorage, AK 995020650 SOILS LOG - PERCOLATION TEST Performed F~: Bob Klcin Legal Description: Lot 6_ Block 2 Sky_ Hills.. Phase Ill SLOPE OG~T Fine Sand Some Silt 13 14 15 16 17 Was Groundwater Encountered? ' No If Yet, What Depth? Depth to Water After Monitoring. None Date: 10/10/99 SP Bottom of Hole S L __0% - 10% O P E Reading Date Gross . Net Depth To Net Time Time ~/ater Drop I 23-Sep 9:15 2 · 9:25 · 10 5.75" 5' 3 9:26 · " · 1.25" 4 9:36 10 6.25" ' . 5' · 5 9:37 1" 6 9:47 10 6' 5' I Perm Rate:. 2 Min./Inch ' . Perc.' Hole Diameter:. 6' Test Run Between .7 Ft. and 8 FL Comments: Percolation Cavity Presoaked Prior to Testing. Performed B~,: ~ I. ~ Cer~fy That Thi,~ Test Was Performed .. In Accordance With All State and Municipal Guidelines In Effect On This Dale: 10/20/99 ON-SITE WASTEWATER DISPOSAL SYSTEM CONSTRUCTION AND MATERIAL SPECIFICATIONS SUBJECT: LOT 6, BLOCK 2, SKYHILLS SUBDIVISION, PHASE III GENERAL: The scope of this project includes the procurement and placement of a new 1,250 gallon septic tank at the location shown on the Site Plan. It also includes the construction of a new 37' long x 3' wide x 7' effective depth absorption trenches. Distribution pipe will be placed at 3.5' below the odginal ground surface. The total depth from original ground surface will be 10.5'. All components of the septic system must be a minimum of 10' from the water service line serving the new house on the lot. 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. 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 Health and Human Services for system installations. Owners installing their own systems must receive prior approval from D.H.H.S. before beginning system installation. SEPTIC TANK INSTALLATION 1. The new 1,250 gallon septic tank must be procured from an approved source and installed at the location shown on the plans. A septic tank is to be constructed by a certified septic tank manufacturer. Construction shall include two 4" cleanouts for pumping access. 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 ~:over shall have a minimum of 2" of direct burial insulation. A foundation cleanout shall be installed one to four feet from the building foundation. Two cleanouts are required between the tank and the drainfield. Lot 6, Block 2, Skyhills Subdivision, Phase III June 30, 2000 Page 2 of 3 7. Final grading over the tank shall be such that a positive slope exists away from the septic tank. DRAINFIELD CONSTRUCTION: 1. The drainfield 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 barder or geotextile fabdc must be placed between the drainfield rock 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 ground must be perforated. Contractor shall vedfy 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 trenches to drain away· A minimum 2' of accepting soil is required below the drainfield rock for a 5' wide trench. Contractor shall vedfy this condition pdor to placement of the rock. All pockets of unacceptable materials must be removed and replaced. MATERIAL SPECIFICATIONS: 1. Septic tanks must be constructed by a municipally approved septic tank manufacturer. 2. The following pipe materials are 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 direct burial polystyrene (Dow Chemical Co. Styrofoam HI or equal). 4. Septic tank inlets and outlets shall be fitted with watertight couplings ° (Caulder, Femco, or equal). ' Lot 6, Block 2, Skyhills Subdivision, Phase III June 30, 2000 Page 3 of 3 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 registered 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 fabdc, 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 preparing the certified as-built of the completed system. ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 522-6779 (FAX) MEMORANDUM DATE: TO: FROM: SUBJECT: June 17, 2002 Jeff Poet Mike Anderson, P.E. Lot 6, Block 2, Skyhills Subdivision No. 3 Septic System As-Built We resurveyed the septic system elevations for the s.u, bject lot and modified the as-built accordingly. The septic tank has slightly more than 5 of cover. The water service line has been added and a third test hole was completed near the end of the absorption trench. All comments from your previous review have now been satisfied. Please let me know if you have further questions.