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HomeMy WebLinkAboutCROSS VIEW ESTATES BLK 1 LT 7Cross View states lock I Lot 7 015-301 -55 Permit Number: Tax Code Number: Work Type: On-Site Water & Wastewater System Permit OSPl11328 01530155000 WellSeptic 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 Permit Effective Dates: December 02, 2011 to December 01, 2012 Design Engineer: ANDERSON ENGINEERING Subdivision: CROSS VIEW ESTATES Site LegalAddress: CROSSVIEW ESTATES BLK 1 LT 7 G:2737 Owner/Address: HARDING HOMES OF ALASKA INC 5771 HERITAGE HEIGHTS DRIVE ANCHORAGE AK 995162362 Site Mailing Address: 5179 HERITAGE HEIGHTS,DR, Anchorage Lot Size in Sq Ft: 40209 Total Bedrooms: 5 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 Ddnking 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. Special Provisions: The Engineer needs to deepen the test hole prior to the construction of the septic field. Construction may proceed at your own risk before the 7 day water monitoring is complete. Please submit stamped and signed results with the As-built Inspection Report. If the results require a design change, construction of the system will stop pending On-Site review and approval. Date: MUNICIPALITY OF ANCHORAGE Community Development Department Development Services Division On-Site Water & Wastewater Program Phone: 907-343-7904 Fax: 907-343-7997 Mayor Dan Sullivan ON-SITE SEWER/WELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. 015-301-55 Property owner(s): Harding Homes of Alaska Day phone: Mailing address: 5771 Heritage Heights Drive Anchorage, AK 99516 Site address: 5179 Heritage Heights Drive Anchorage, AK 99516 Legal description (Sub'd., Block & Lot): Cross View Estates, Block 1, Lot 7 Legal description (Township, Range & Section) Lot Size: 40,209 Sq. Ft. Number of Bedrooms: Five (5) 350-1860 THIS APPLICATION IS FOR: (~] all that apply) Absorption Field X Septic Tank X Holding Tank [] Privy [] Private Well ~' 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~AndEng\Desktop\Permit Application.docC:\Users~AndEng\Desktop\Permit Application.doc November 5, 2011 Municipality of Anchorage Development. Services Department On-Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Subject: Lot 7, Block 1, Cross View Estates Subdivision Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of Lot 7, Block 1, Cross View Estates Subdivision intends to construct a new five-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 well and septic system along with the alternate site. Also identified on the plans are the existing wells and septic systems on surrounding lots. No conflicts exist between the proposed well and septic system and wells or septic systems on adjacent lots. 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 recently placed on the lot in the area of the absorption trenches and alternate site indicate silty sand and gravel (GM/SM). The percolation rate of the soil was determined to be between 30 and 60 minutes per inch. No groundwater was found during the placement of the test hole and none was noted during the monitoring period. An application rate of .45 gallons per day per square foot was used in the design of the absorption system. We are proposing to place a new 1,500-gallon septic tank and two 56' long by 3' wide by 7.5' effective depth absorption trenches to treat and dispose of the effluent generated in the house. The elevation of the distribution line in the absorption trench will be 4' below the surface and the total depth will be 11.5'. 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. A flow splitter valve will be placed to insure even flow to each trench. Several test holes and wells have been placed in the Cross View Estates Subdivision. None indicate the presence of bedrock at depths less than 50' below the surface. We Lot 7, Block 1, Cross Point Estates Subdivision November 5, 2011 Page Two are confident no bedrock exists within 6' of the bottom of the proposed absorption trenches. The ground surface on the lot in the area of the septic system slopes to the northwest at a shallow grade. The new trenches will be constructed parallel with the contours of the slope as much as possible in conformance with Municipal requirements. The new septic system will be constructed a minimum of 100' from all wells and any surface water and 10' the proposed and existing water services in the area. If the system is constructed in accordance with our design the following statements apply: o 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 / TALUS DRIVE LOT 1x-, BLOCK 1~,, TALUS WEST",, \, /1111 IIi LOT 13 / BLOCK 2 /// TALUS WEST// LOT 9 BLOCK 1 ......... LILAC PARK / / LOT 1 1 / ,, BLOCK 2 / xx LILAC PARK ~.~:..~.;....;~ ................. ;,~.~ ) g LOT 6 / VACAN~ / "~ ,c,,/ r'~ .... ', LOT 5 "7 - - '-/¥TM ,, I/ _'_I_ " F --~ ' AREA MAP SCALE 1' = 100' LOT 7, BLOCK 1, CROSS VIEW ESTATES SUBDIVISION DESIGN FACTORS: SYSTEM REQUIREMENTS: Five Bedroom Home Deep Trench System Perc. Rate: 30-60 Min./Inch 1,500 Gallon Septic Tank Application Rate: .45 GPD/SF 7.5' Drainfield Rock 5 Bedrooms X 150 GPD/.45 GPD/SF (Application Rate) -- 1,666.7 SF Absorption Area 1,666.7 SF/15 SF/LF = 111.1 LF Trench Length THEREFORE: Construct 2 - 56' Long x 3' Wide x7.5' Effective Depth Absorption Trenches at the Location Shown. Flow Line Elevation in Trench to be 4' Below Original Ground Surface. Total Depth to be 11.5' Below Existing Ground. Provide 4' Cover Over Septic Tank and 3' Cover Over Absorption Trench. Maintain 100' Separation from Wells in the Area. Place Splitter Valve to Insure Even Flow to Each Trench. '6" 11 Natural Backfill Geotextile -- Fabric 4" Perforated PVC (Holes Down) Drainfield Rock TYPICAL DEEP TRENCH SECTION U ( O SCALE) _~ .'~ ........... /,~ ~, ............ NOTE: Grade Area Over Trench to Drain Away. , ~ Minimum 6' Separation From Bedrock. ~,,,,,~(.,,,,4,.9th Minimum 4' Separation From Groundwater. ~ ~~ Minimum 100' Separation From Wells in the Area ~'~'~'"~'~,"~~'~ ' Minimum 100' Separation From Surface Water or Streams. ~:~'-.. No. '~"~ .'""~-? '<~':.. Municipality of Anchorage Development Services Department Building Safety Division On-Site Water and Wastewater Program 4700 Elmore Road P.O. Box 196650 Anchorage, AK g9507 www. ci.anchoriac~9.ek.~s (907) 343-7904 Soils Log - Percolation Test Performed For. Harding Homes of Alaska Legal Description: Cross View Estates, L7, B1 5- 6- 7- 8- 9- 10- 11- 12- 15- Date Pedo~ed: November 1,2011 SIo III I II1.. I, ..itl i lib I IIB I IlK IIII I ltl Illl I'1 Site Plan WAS GROUNDWATER ENCOUNTERED? No s IF YES, AT WHAT DEPTH? XXX L Depth to Water After '~/~"~, op Monitoring? E Township, Range, Section: Reading Date Gross Time 'Net Time Depth to Water Net Drop 19- PERCO~ON ~ ~e~ (mi~n~) PERC HOLE D~ME~R ~ST RUN B~EN COMMENTS Peru Cavi~ ~s pre-soaked pdor to t~ng- TEST HOLE # 2 PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: I ~- IL- i t Municipality of Anchorage I ~ ~,,~h~,~e,~.~ ~. I  Development Se~s Depa~meflt 47~ Elmom Road P.O. Box~.d.an~omae.ak. usl~50 ~o=ge, Soils Log - Percolation Test / '~.?~0.~*%~~ I Pe~ Fo~ Ha~ing Homes of Alas~ Date Pedo~ed: November'S1 Legal Description: Cross View Estates, L7, B1 6- 7- 8- 9- 10- Iil, !i1 Ill I11 WAS GROUND WATER ENCOUNTERED? NO IF YES, AT WHAT DEPTH? XXX Depth to Water After Township, Range, Section: t Reading Date Gross Time Net Time Depth to Water Net Drop *I~;P,~ '~ ,~;,~. '7, W" ~..~." /' /,,/,1,, 11- 12- 13- 14- 15- 16- 17- 18- 19- PERCOLATION RATE 4 ~ PERC HOLE DIAMETER "7 TEST RUN B~EN .~'~ Fq' AND ~'F)/I~ FT COMMENTS Peru Cavity was pre-soaked prior to testing- TEST HOLE # 1 PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: