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HomeMy WebLinkAboutCROSS VIEW ESTATES BLK 1 LT 31Cross View Estates Block 1 Lot 31 #015-221-62 Permit Number: Tax Code Number: Work Type: On-Site Water & Wastewater System Permit OSP141106 01522162000 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: May 15, 2014 to May 15, 2015 Design Engineer: ANDERSON ENGINEERING Subdivision: CROSS VIEW ESTATES Site LegalAddress: CROSS VIEW ESTATES BLK 1 LT 31 G:2737 Owner/Address: HARDING HOMES OF ALASKA INC 5771 HERITAGE DRIVE ANCHORAGE AK 995160000 Site Mailing Address: 12090 LOWER HERITAGE CIR, Anchorage Lot Size in Sq Ft: 40229 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 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. Date: Municipality of Anchorage P.O. Box 196650 · 4700 Elmore Road Anchorage, Alaska 99519-6650 · (907} 343-7904 · Fax (907) 343-7997 http:llwww.muni.or.qlOn$ite Development Services Division On-Site Water and Wastewater Program Department **** VARIANCE/WAIVER REVIEW **** WaiverS: OSP141122 COSA#: Permit#: OSPt41t06 PID#: 015-221-62 Legal Description: Cross View Estates Block 1 Lot 3t Engineer: Anderson En.qineerin,q Applicant: Harding Homes Your request for a waiver of the required 50 feet horizontal separation from the absorption field to the excessive slope has been approved. The approved separation distance is 18.0 feet. This waiver approval applies to the proposed absorption field only. Any future upgrade to the on-site wastewater disposal system will require all separation distances be met or another approval from this department. [] The affected adjacent property owner(s) have been given a 7 day notice regarding this waiver. [] Notarized letter(s) of nonobjection have been received from the owner(s) of the affected adjacent property. [] Adjacent properties are not affected by this waiver. Waiver is Granted: X Waiver is not Granted: Date: ~'~,~/.~ Approved by: Name of Revi. c~r ~ Rec#: 063006 Amount: $215.00 Date Paid: $/13/14 **** VARIANCE/WAIVER REVIEW **** MUNICIPALITY OF ANCHORAG Community Development Department Phone: 907-343-7904 Development Services Division Fax: 907-343-7997 On-Site Water & Wastewater Program ON-SITE SEWER/WELL PERMIT APPLICATION Parcel I.D. 015-221-62 Property owner(s) Harding Homes of Alaska, Inc. Mailing address 5771 Heritage Drive Anchorage, AK 99516 Day phone 350-1860 Site address 12090 Lower Heritage Circle Anchorage, AK 99516 Legal description (Sub'd., Block & Lot) Cross View Estates, Block 1, Lot 31 Legal description (Township, Range & Section) LotSize 40,229 Sq. Ft. Number of Bedrooms Five (5) APPLICATION IS FOR: ([~ all that apply) Absorption Field [] Septic Tank [] Holding Tank [] Privy [] Private Well [] Water Storage [] APPLICATION IS AN: Initial [] Upgrade [] Renewal [] TYPE OF DWELLING: Single Family (SF) [] (w/wo ADU) Duplex (D) [] Multiple Dwellings [] (SF and/or D) THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR: Dis tance: I certify that the above information is correct. I further certify that this is in accordance with applicable Municipal Codes. (Signature of property owner or authorized agent) PermiFRush Fees: Date of Payment: Receipt N umber: Permit No. Waiver Fees: Date of Payment: Receipt Number: Waiver No. Permit App_g-1-12.doc ANDERSON ENGINEERING P,O, BOX 240773 : ANCHORAGE; A~99524 522:7773 6777766 (FAX) May 1, 2014 Municipality of Anchorage Development Services Department On-Site Water and Wastewater Program 4700 Elmore Road Anchorage, AK 99519-6650 Subject: Lot 31, Block 1, Cross View Estates Subdivision Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of Lot 31, 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 in the area and septic systems on surrounding lots. No conflicts exist between the proposed septic system and well or septic systems and wells on adjacent lots. Drainage arrows and ground surface contours 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 hole placed on the lot in the area of the absorption trench and alternate site indicate silty sand with gravel (SM). The percolation rate of the soil at the test hole was determined to be 4.4 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 1.2 gallons per day per square foot was used in the design of the absorption system. We are proposing to place a new 1,500-gallon septic tank and an oversized 60' long by 3' wide by 6' 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 9'. 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 septic system slopes to the west at a shallow grade with some cross sloping from the east. The new trench will be Lot 31, Block 1, Cross Point Estates Subdivision May 1, 2014 Page Two 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: 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 LOT 24. BLOCK Vocont CROSS VIEW ESTATES LOT 10, BLOCK 2 // LOT 27, BLOCK 1 Vocont / / / '~ \ CROSS VIEW ESTATES LOT B, BLOCK 2 \ \ LO,~ 30, BLOCK I // Vacant AREA MAP ANDERSON~ SCALE 1' = tOO' No, 6E-4381 CROSS PLAT NO. 2006-171 VIEW ESTATES SUBDIVISION LOT 31, BLOCK 1 40,229 S.F. LOT 50, BLOCK VACANT Septic To HERITAGE HEIGHTS DRIVE SITE PLAN SCALE 1' = 50' LEGEND: C0 - Cleonout SV - Septic Vent FCO - Foundo[ion Cleanout TH - Test Hole MT - Monitor Tube LOT 31, BLOCK 1, CROSS VIEW ESTATES DESIGN FACTORS: SYSTEM REQUIREMENTS: Five Bedroom Home DeepTrench System Perc. Rate: 4.4 Min./Inch 1,500 Gallon Septic Tank Application Rate: 1.2 GPD/SF 6' Drainfield Rock 5 Bedrooms X 150 GPD/1.2 GPD/SF (Application Rate) = 625 SF Absorption Area 625 SF/12 SF/LF = 52.08 LF Trench Length THEREFORE: Construct a 60' Long x 3' Wide x 6' Effective Depth Absorption Trench at the Location Shown. Flow Line Elevation in Trench to be 3' Below Original Ground Surface. Total Depth to be 9' Below Existing Ground. Provide 4' Cover Over Septic Tank and 3' Cover Over Absorption Trench. Maintain 100' Separation from Wells in the Area. Natural Backfill ~© Geotextile Fabric 4" Perforated PVC (Holes Down) Drainfield Rock TYPICAL DEEP TRENCH SECTION NOSCA'E) .......... NOTE' Grade Area Over Trench to Drain Away . ~ ' , , ~ . m Minimum 6 Separation From Bedrock. ~.,..~ ........ ..,,...¢ ......... ¢,.,..~..~,,~ Minimum 4 Separation From Groundwater. ~ ~ Minimum 100 Separation From Wells in the Area. ,~ MICHAELE. ANDERSON Minimum 100' Separation From Sudace Water or Streams ~¢-~ · ~.,...-. ..~ &700 DEPTH (~) 1 2 3 4 5 6 7 8 9 11 20. MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPART~IENT BRAGAW STREET ANCHORAGE, AK 99519-6650 SOILS LOG ~ PERCOLATION TEST LEGAL DESCRIPTION: LOT 51, BLOCK I, CROSS VIEW ESTATES SUB. PERFORMED FOR: HARDING HOr"IES DATE: h/2L/201& PROJECT No.: PARCEL ID#: TECHNICIAN: I TEST.OLE^ I OB/OG SILTY SAND WITH GRAVEL LOOSE DRY W. ROBERTS WAS GROUND WATER ENCOUNTERI~D? .__ DEPTH OF WATER AFTER MONITORING: BOH @ SLOPE NO SITE PLAN SEE SITE PLAN 5% j DATE OF MONITORING: 5/I/IA DEPTH TO DATE READING GROSS TIME NET Tilde WATER NET DROF (PIINUTES) (MINUTES) (INCHES) (INCHES) TEST HOLE PRESOAKED PRIOR TO TESTING: 4/24 1 11:03/]1:13 10 4.00"/1.75" 2.25" 2 11:14/11:24 10 3.75"/1.50" 2.25" 3 11:25/11:35 10 4.00"/1.75" 2.25" 4 11:36/11:46 10 4.00"/1.75" 2.25" 5 11:47/11:57 10 3.75"/1.50" 2.25" 6 i1:58/12:08 10 4.00"/1.75" 2.25" PERCOLATION RATE: 4.4 (MmnNCH) PERC. HOLE DIA. 6" .(INCHES) TEST RUN BETWEEN: 7 FT. and 8 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: h/28/I/4 May 13, 2014 Municipality of Anchorage Development Services Department On-Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Su~e~: Lot 31, Block 1, Cross View Estates Subdivision Absorption Trench to Slope Waiver Dear Onsite Services Engineer: The north end of the alternate absorption trench proposed for Lot 31, Block 1, Cross View Estates Subdivision is located 18' from the edge of the shallow 1.5' deep dry drainage ditch along Lower Heritage Circle. The backslope of the ditch is greater than 25%. We are therefore applying for a waiver allowing placement of the absorption trench at this location. Subsurface soils in the area of the absorption trench are porous sandy gravel with silt. No migration of effluent is expected toward the slope. We therefore recommend a waiver be issued allowing placement of the alternate absorption trench within 18' of the slope greater than 25%. Sincerely, Michael E. Anderson, P.E.