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Home My WebLink AboutHORIZON ESTATES LT 11Horizon Estates Lot 11 #051-324-31 Permit Number: Tax Code Number: Work Type: On-Site Water & Wastewater System Permit OSP151033 05132431000 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: February 19, 2015 to February 19, 2016 Design Engineer: ANDERSON ENGINEERING Subdivision: HORIZON ESTATES Site LegalAddress: HORIZON ESTATES LT 11 G:0553 Owner/Address: TROY DAVIS HOMES lNG 165 E PARKS HIGHWAY STE 200 WASILLA AK 996540000 Site Mailing Address: 18242 FISH HATCHERY RD, Eagle River Lot Size in Sq Ft: 40077 Total Bedrooms: 4 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. MUNICIPALITY OF ANCHORAGE Community Development Department Development Services Division On-Site Water & Wastewater Program Phone: 907-343-7904 Fax: 907-343-7997 ON-SITE SEWERNVELL PERMIT APPLICATION Parcel I.D. 051-324-31 Property owner(s) Troy Davis Homes Day phone 310-2501 Mailing address 165 E. Parks Highway #200 Wasilla, AK 99654 Site address 18242 Fish Hatchery Road Eagle River, AK 99577 Legal description (Sub'd., Block & Lot) Horizon Estates, Lot 11 Legal description (Township, Range & Section) Lot Size 40,077 .Sq. Ft. Number of Bedrooms Four APPLICATION IS FOR: APPLICATION IS AN: TYPE OF DWELLING: ([~ all that apply) Absorption Field [] Initial [] Single Family (SF) [] (w/wo ADU) Septic Tank [] Upgrade [] Duplex (D) [] Holding Tank [] Renewal [] Multiple Dwellings [] Pdvy [] (SF and/or D) Private Well [] Water Storage [] THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR: Distance: 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) Permit/Rush Fees ~T~j ~ Date of Payment: Receipt Number: 0070 Permit No. 05PI51 Waiver Fees: Date of Payment: Receipt Number: Waiver No. Permit App ]. :. February 7, 2015 Municipality of Anchorage Development Services Department On-Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Su~e~: Lot 11, Horizon Estates Subdivision Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of Lot 11, Horizon Estates Subdivision intends to construct a new four- bedroom home on the lot. We are 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 proposed and existing wells in the area and septic systems on surrounding lots. No conflicts exist between the proposed septic system and the well or septic systems and wells on adjacent lots. Drainage arrows and ground 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. Storm drain easements are in place on the east side of the lot. No surface water is currently seen in the easements and no evidence of past drainage was noted. The test holes placed on the lot indicated silty gravel with sand (GM). The percolation rate of the soil was determined to be 6 to 15 minutes per inch. Groundwater was found dudng the placement of the test holes and stabilized during the monitoring period at 7.7' in Test Hole No. 17 and 11.8' in Test Hole No. 18. An application rate of .8 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 STEP tank and 2-48' long by 5' wide by 2.5' 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 1' below the surface and the total depth will be 3.5' to provide 4.2' separation from the highest groundwater level monitored in the area. 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 north and northwest at a shallow grade with some cross sloping from the east. 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 Lot 11, Horizon Estates February 7, 2015 Page Two mimmum 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 L~ 233.96 Jl 307.65 307.65 HORIZON ESTATES SUBDIVISION Advsntex Treotment ~ystem ~ ~T~1'500 Gsllon ~// X 2.5 Effective Depth ~ ~ ~ AbsorpUon Trench. ~,0 ~ MT - Monitor Tube ~ FCO - FoundeUon Cle~n Out ~ Contour Interwl - 2 ~ m / 2-4s' ~ ~ / Wide x 2~Effective ~ ~ ~ Depth ~sorption / NOTE: ~ ~ ~ Excessive Slope or ~ ~ Z ~ ~ ~ ~ Septic System. LOT 11, HORIZON ESTATES SUBDIVISION DESIGN FACTORS: SYSTEM REQUIREMENTS: Four Bedroom Home 5' Wide Trench System Perc. Rate: 6-15 Min./Inch 1,500 Gallon STEP Tank Application Rate: .8 GPD/SF 2.5' Drainfield Rock 4 Bedrooms X 150 GPD/.8 GPD/SF (Application Rate) = 750 SF Absorption Area 750 SF/5 SF*.64 (Red. Factor) = 96 LF Trench Length ~ THEREFORE: Construct 2-48' Long x 5' Wide x 2.5' Effective Depth Absorption Trenches at the Location Shown. Flow Line ELevation in the Trenches to be 1' Below Original Ground. Total Depth to Be 3.5' Below Existing Ground. Provide 4' of Cover Over STEP Tank and a Minimum of 3' Cover Over Absorption Trenches. Maintain 100' Separation from Wells in the Area. Geotextile Fabric , 1',' Perforated PVC (Holes Down) 15 3/16" Holes Each Lateral Hole Spacing 3"2" Dreinfield Rock TYPICAL DEEP TRENCH SECTION (NO SCALE) ............ NOTE' Grade Area Over Trench to urain Away. ~,' ' Minimum 6' Separation From Bedrock. ~/~":'~'~'"""'~" Minimum 4' Separation From Groundwater. ~..~.~;.~~ Minimum 100' Separation From Wells in the Area. ~ MIO~ELE. ANDERSON Minimum 100' Separation From Su¢ace Water or Streams. ~?,% No. CE43a* &700 DEPTH 1 2 3 4-- 5 6-- 7 8 9 MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT BRAGAW STREET ANCHORAGE, AK 99519-6650 SOILS LOG - PERCOLATION TEST LEGAL DESCRIPTION: PERFORMED FOR: DATE: 10/11/15 PARCEL ID#: OB/OS SILTY GRAVEL WITH SAND GM BOH @ 12' LOT II, HORIZON SUBDIVISION TRoY DAVIS HOMES PROJECT No.: TECHNICIAN:. A. HARALA ;LOPE ...%'..... w'"'V;,;{&;dC'/:'X;;{~rso, No, - 'e~T~ '~': ......... Professional SITE PLAN SEE SITE PLAN WAS GROUND WATER ENCOUNTERED? YES IF YES ~ WHAT DEPTH? 7.7' I [ DEPTH OF WATER AFTER MONITORING: 7.7' 2°/0 ~ DEPTH TO DATE READING GROSS TINE NET TIME WATER NET DROP (MINUTES) (MINUTES) (INCHES) (INCHES) TEST HOLE PRESOAKED PRIOR TO TESTINGi 10/12 1 11:40 6.38" 2 12:10 30 8.69" 2.31" 3 12:11 6.31" 4 12:41 30 8.56" 2.25" 5 12:12 6.31" 6 12:42 30 8.56'! 2.25" PERCOLATIONRATE:13 (NIH/INCH) PERC. HOLEDIA. 6" .(INCHES) TEST RUN BETWEEN: 4.5 FT. and 5.5 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: 10/20/13 ~700 DEPTH (fee0 1 2 3 4-- 5 6 7 8 9 20¸ MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT BRAGAW STREET ANCHORAGE, AK D9519-6650 SOILS LOG - PERCOLATION TEST LEGAL DESCRIPTION: PERFORMED FOR: DATE: 10/11/13 PARCEL ID#: 0B/0G SILTY GRAVEL WlTk~ SAND GM BOH @ 16' LOT II, HORIZON SUBDIVISION TROY DAVIS HOMES PROJECT No.: TECHNICIAN: A. HARALA SLOPE SITE PLAN SEE SITE PLAN WAS GROUND WATER ENCOUNTERED? YES 1F YES 1~ WHAT DEPTH~ 11.8' ~ DEPTH OF WATER AFTER MONITORING: Il. 8' 2°/0 DATE OF MONITORINO: 10/18/13 DEPTH TO DATE READING GROSS TIHE NET TIHE WATER NET DROF (HINUTES) (HINUTES) (INCHES) (INCHES) TEST HOLE PRESOAKEB PRIOR TO TESTING: 10/12 1 12:01 7.06" 2 12:31 30 9.75" 2.69" 3 12:32 7.12" 4 13:02 30 9.75" 2.63" 5 13:03 7.12" 6 13:33 30 9.81" 2.69" PERCOLATION RATE: 11 (MIN/1NCH) PERC. HOLE DIA. 6" (INCHES) TEST RUN BETWEEN: 4.5 FT. and 5.5 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: 10/20/15 o • Municipality of Anchorage = On -Site Water and Wastewater Program (907) 343-7904 5 A E T Y CERTIFICATE OF ON-SITE SYSTEMS APPROVAL Parcel I.D. 051-324-31 Expiration Date: it 2T- 262Z- 1. GENERAL INFORMATION Complete legal description Horizon Estates Lot 11 Location (site address) 18242 Fish Hatchery Rd. Eagle River, AK 99577 Current Property owner(s) Eric & Olena Ekstrom Day phone Mailing address 18242 Fish Hatchery Rd. Eagle River, AK 99577 Real Estate Agent 2. TYPE OF DWELLING: ® Single Family (w/wo ADU) ❑ Duplex ❑ Multiple Dwellings (Single Family and/or Duplex) Day phone 3. NUMBER OF BEDROOMS: 4 TYPE OF WASTEWATER DISPOSAL: 4. TYPE OF WATER SUPPLY: Individual Individual Well ® Holding Tank ❑ Individual Water Storage ❑ Community ❑ Community Class Well ❑ Public Sewer ❑ Public Water System ❑ WaiverNariance request for: Received by: Date: COSA to be released to the engineer, unless otherwise requested by the engineer. COSA Fee $ 550 Date of Payment ((9 -2-& ` Z Receipt Number 05� 3 q I Ia COSA# OSC21 1 (o3q Waiver Fee $ Date of Payment _ Receipt Number _ Waiver # Distance: 5. STATEMENT OF INSPECTION BY ENGINEER investigation, As certified by my royal Guidelines for this application, seal affixed hereto and as of the validation date shown below, I verify that my 9 based on procedures outlined in the Certificate of On -Site Systems App shows that the on-site water supply and/or wastewaterdisposal in.yl further stem is verfy that based onithea formatiadequate for the number of bedrooms and type of structure indicated obtained from the Municipality of Anchorage files and from my investigation and inspection, the on-site water supply and/or wastewater disposal system is(are) in compliance with all applicable Municipal and State codes, ordinances, and regulations in effect at the time of installation. Name of Firm ARCTERRA CONSULTING INC. Phone 696-6111 Address 20441 PTARMIGAN BLVD., EAGLE RIVER AK 99577 Date ��2 , Engineer's Printed Name KENNETH M. DUFFUS :�/,� he assessment of ion Engineer's comments: se tic a This lies only toinvestigation the conditonseas of the dd in ay testedh he flowEC ancenandOabso ptionloratesTmay change due tohsubsurftace of the well and p be use, local soil ate conditions thay not nd the watereusagerof the familyom the surface, ngaserved Ibydthe system. The operational Irfe of all well roundwater land/ septic systems s that may uare during the year subject to these various and dynamic characteristics and are outside the control of the evaluator of the well and septic system. Therefore, ArcTerra can not give any estimate of how long a =\,� system will function satisfactory for current or future OFL \ occupants or can ArcTerra guarantee that no unseen `1S" encroachments, deficiencies or discrepancies exist. /Y�� DSD SIGNATURE KENNET M. FUS System #1 Approved for P' bedrooms. System #2 Approved for bedrooms. ° Peoress>o�� Disapproved. Conditional approval for bedrooms, with the following`!�pIA/V�/�� ON-SITE ocT1-1i1ATFR z= PROGFAM Original Certificate Date: V •.horage Development Services/ Division (DSD) issues Certificates of On -Site Systems Approval (COSA) based only given in paragraph 5 by an independent professional civil engineer registered in the State of Alaska. The Municipality ;ible for errors or omissions in the professional engineer's work. X Nitrate Advisory isory _ Arsenic Advisory Other COSA Checklist Legal Description: Horizon Estates Lot 11 Parcel ID: 051-324-31 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 3/26/15 Total depth 105 ft Cased to 60 ft 0 Sanitary seal is functioning correctly ❑■ Wires are properly protected Casing height (above ground) 28 in. Date of flow test for COSA 10/6/21 Static water level at beginning of test 26 ft. Comments B. TANK DATA Age of tank(s) 6 years Tank type/mater=ingfluid Se71evel Measured op erain 9"Stand ' es/foundationout err cor drawing Date of umping L�� 21 �� D. ABSORPTION -MELD DATA Which system tested (date installed) 3/17/15 IN ALL standpipes present per record drawing Total measured depth from grade 5.3 ft (max) Measured depth to pipe invert from grade 3 ft (min) ❑ N/A — pressurized field Monitor tubes go to bottom of effective. If not, state depth into effective 2.3 0 Code -required soil cover over field ❑ System presoaked (Required if vacant for greater than 30 days prior to date of test) Gallons introduced gallons Comments/Deficiencies: COSA Checklist yellow sheet Well production at time of test 4.8 gpm Water storage tank volume gallons Well disinfected for coliform test? ❑ Yes Q Nc N Coliform bacteria is Negative Nitrate 0.433 mg/L ❑ Nitrate less than MRL (ND) Arsenic ug/L ■❑ Arsenic less than MRL (ND) Collected by Arcterra Consulting Date of Sample 10/6/21 FT STATION ❑ Requir aintenance completed Age of lift station years Lift station material Comments: Adequacy test date 10/6/21 Results 2] Pass For 4 bedrooms Fluid depth prior to test 5 in Water added 600 gal New depth 6 in Elapsed time 1440 min Final fluid depth 5 in Absorption rate 600+ gpd Any rejuvenation treatment (past 12 months) If yes, enter date 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 Community Sewer Manhole/Cleanout > 100' JZ Yes if No ft 2] Yes if No ft if No ft Wells on Adjacent Lots: Absorption Field > 5' ft Private Sewer/Septic Line > 25'91 Yes if No ft Neighboring Tank > 100' ® Yes if No ® Yes if No ft Absorption Field on Lot > 100' ® Yes if No ft Holding Tank > 100' ® Yes if No ft Neighboring Absorption Fields > 100' Animal Containment > 50' ® Yes if No ft ® Yes if No ft Manure/Animal Excreta Storage > 100' Community Sewer Main > 75' ® Yes if No ft ® Yes if No ft From Septic/Holding Tank on Lot to: (Please enter distances if less than required) Building Foundations > 10'Yes Yes if No ft Surface Water > 100' ® Yes if No ft Property Line > 5' 0 Yes if No ft Wells on Adjacent Lots: Absorption Field > 5' ® Yes if No ft Private Wells > 100' ® Yes if No ft Water Main > 10 ® Yes if No ft Community Wells > 200' ® Yes if No ft Water Service Line > 10' ® 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 If absorption field is under driveway comment below Property Line > 10' ❑ Yes if No 4* ft Wells on Adjacent Lots: Water Main > 10' ® Yes if No ft Private Wells > 100' ® Yes if No ft Water Service Line > 10' ® Yes if No ft Community Wells > 200' ® Yes if No ft Surface Water > 100' ® Yes if No ft F. ENGINEER'S COMMENTS *Waiver# OSV161003 granted 3/1/16 G. ENGINEER'S CERTIFICATION l certify that l 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. COSA Checklist yellow sheet 49m p o 0 ®� KEN ii�N M U U® m CE 71 1 oa,