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HomeMy WebLinkAboutSCHROEDER EAST BLK 6 LT 11hroed r Block 6 Lot 11 #050-071-20 On-Site Wastewater Disposal System Permit  MUNICIPALITY OF ANCHORAGE Development Services Department On-Site Water & Wastewater Program 4700 Elmore Road, PO Box 196650 Anchorage, AK 995'19-6650 Telephone: (907) 343-7904 Permit Number: OSP151142 Tax Code Number: 05007120000 Work Type: Septic Initial Permit Effective Dates: May 27, 2015 to May 26, 2016 Design Engineer: ANDERSON ENGINEERING Subdivision: SCHROEDER EAST Site Legal Address: SCHROEDER EAST BLK 6 LT 11 G:0353 Owner/Address: TROY DAVIS HOMES INC 165 EAST PARKS HIGHWAY STE 200 WASlLLA AK 996547059 Site Mailing Address: 17540 SANTA MARIA DR, Eagle River Lot Size in Sq Ft: 20717 Total Bedrooms: 3 This permit is for the construction of: Y Disposal Field Y SepticTank N Holding Tank N Privy N 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. ~ . ~.,~,, Special Provisions: The entire subsurface disposal field and/or alternate is not within a 30 foot radius of a percolation test. The Engineer needs to do an additional percolation test prior to the construction of the septic field. 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. AMC 15.65.060.B.3 MUNICIPALITY OF ~11,~ o.. ~ ~ Phone: 90~.3-7__9_0_4 .,~/.~y ""' ~"~C~u~ity Development Department Development Services Division ~ Fax: 90~ On-Site Water & Wastewater Program ON-SITE SEWER/WELL PERMIT APPLICATION Parcel I.D. 050-071-20 Property owner(s) Troy Davis Homes Day phone 310-2501 Mailing address 165 E. Parks Highway #200 Wasilla, AK 99654 Site address 17540 Santa Maria Drive Eagle River, AK 99577 Legal description (Sub'd., Block & Lot) Schroeder East, Block 6, Lot 11 Legal description (Township, Range & Section) Lot Size 20,717 Sq. Ft. Number of Bedrooms Three APPLICATION IS FOR: APPLICATION IS AN: ([~ all that apply) Absorption Field [] Initial [] Septic Tank [] Upgrade [] Holding Tank [] Renewal [] Privy [] Private Well [] Water Storage [] TYPE OF DWELLING: Single Family (SF) [] (w/wo ADU) Duplex (D) [] Multiple Dwellings [] (SF and/or D) THIS APPLICATION INCLUDES A VARIANCE I 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: ~,~q '~ ~//~J~'~ O//0'~Vaiver Fees: Date of Payment: ~//~ ~_ Date of Payment: Receipt Number: ~ ~ ~ Receipt Number: Permit No. ~¢~ I~ ~ Waiver No. Perm~tApp_w-..,~.~c~ May 22, 20'15 Municipality of Anchorage Development Services Department On-Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Su~e~: Lot 11, Block 6, Schroeder Subdivision East Addition Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of the subject lot intends to construct a three bedroom home. We are therefore requesting a permit be issued for the construction of a new septic system to accommodate the home. The attached Site Plan and backup documentation identify the location and configuration of the proposed septic system. The subdivision is served by the AWWU water system 'and a service will be extended to this lot. No existing wells or septic systems 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 hole placed on the lot in the area of the proposed absorption trench indicated silty sand and gravel (GM/SM) material. The pemolation rate of the soil was determined to be 3.6 minutes per inch. Groundwater was found at 8' during the placement of the test hole and stabilized at 6' below the surface during the monitoring period which included a recent inspection. 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 1,250-gallon STEP tank and a 66' long by 5' wide by 1' 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 1' below the surface and the total depth will be 2'. 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 to the west at approximately 2%. The new trench 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 Lot 11, Block 6, Schroeder Subdivision East Addn. May 22, 2015 Page Two 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 ~mpact 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 / / t9 /-- I 9 w~, / / \x II I \ // NOTE: / / / AREA MAP SCALE 1' = 100' Municipality ofAnchorage Permit Number: OSP151142 OEVE[)PMENTSERVICES DEPARTMENT 4700 South Bragaw Street Anchorage, AK 99519-6655 - 343-7904 IN ALTERNATE SITE: A1want*x Tn»obnentytem »/14' Long x 5' Wide x 1' Effective Depth Absorption Tmnoh, App! Rota O GPD/SF in Three Bedroom House covq�pl� Page 2of3 PID No. 050-071-20 wo | 134..8'114.1' 04040F F-ASEMF-t4V PLAN AS BUILT_ S1 —tic Vent p CO — a n Out mz — Monitor Tube 36 Test Hole MH wo | 134..8'114.1' 04040F F-ASEMF-t4V PLAN AS BUILT_ S1 —tic Vent p CO — a n Out mz — Monitor Tube O1 — Test Hole MH — Mon Hole LOT 11, BLOCK 6, SCHROEDER EAST SUBDIVISION DESIGN FACTORS: Three Bedroom Home Perc. Rate: 1-5 Min./Inch Application Rate: 1.2 GPD/SF SYSTEM REQUIREMENTS: 5' Wide Trench System 1,250 Gallon STEP Tank 1' Drainfield Rock Pressure Distribution System 3 Bedrooms * 150 GPD/Bedroom = 375 SF Absorption Area 375 SF/1.2 GPDISF/5 SF (Width) *.87 (Red. Factor)= 65.25 LE Trench Length THEREFORE: Construct a 66' Long x 5' Wide x 1' Effective Depth Absorption Trench at the Location Shown. Flowline Elevation to be 1' Below the Existing Ground Elevation. Total Depth to be 2' Below Existing Ground. Provide 4' of Cover Over Septic Tank and 3' of Cover Over Absorption Trench. Maintain 200' Separation From Class A Well in the Neighborhood. ---.----- Geotextile Fabric \©~ ~ 1" Perforated pVC(HolesDewp:). : ,:. : 15 - 3/16" Holes @ 2.2' Each Lateral Drainfield Rock NOTE: Grade Area Over Trench to Drain Away. ~'.~ Minimum 4' Separation From Groundwater ·-Mir~imum 200, Separation From Class A Well in the Area· Minimum 100 Separation From Surface Water or Streams. 4700 DEPTH (~e0 1 2 3 4-- 5-- 6-- 7 8 9 11 20. MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT BRAGAW STREET ANCHORAGE, AK 9951926650 SOILS LOG - PERCOLATION TEST LEGAL DESCRIPTION: PERFORMED FOR: DATE: 5/5/15 PARCEL ID#: LOT II, BLOCK 6, SCHROEDER EAST SUBDIVISION TROY DAVIS HOMES PROJECT No.: TECHNICIAN: I TESTHOLE 1 I OL/OG SILTY GRAVEL WITH SAND GM/SM BOH @ I&' W, ROBERTS SLOPE SITE PLAN SEE SITE PLAN WAS GROUND WATER ENOOLINTERED? YES IF YES ~ WHAT DEPTH?. 8' ~ DEPTH OF WATER AFTER MONITORING: 6' L ? °/o ~ -- DATE OF MONITORING' §/15/2015 ~ DEPTH ~o DATE READING GROSS TIME NET TIME WATER ,lET DROP (MINUTES) (MINUTES) (INCHES) (INCHES) TEST HOLE PRESOAKED PRIOR TO TESTING: 5/5 1 1:13 0.75"" 2 1:43 30 9.13" 8.38" 3 1:44 0.88" 4 2:14 30 9;25" 8.37" 5 2:15 0.75" 6 2:45 30 9.06" 8.31" PERCOLATION RATE: 3.6 (MIN/INCH) PERC. HOLE DIA. 10" _(INCHES) TESTRUNBETWEEN: 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 1N ACCORDANCE WITH ALL STATE AND MUNICIPLE GUIDELINES IN EFFECT ON THIS DATE: 5/22/15 • L" ---1 Municipality of Anchorage �� On-Site Water and Wastewater Program (907) 343-7904 CERTIFICATE OF ON-SITE SYSTEMS APPROVAL Parcel I.D. 050-071-20 Expiration Date: (a-1 q--11 1. GENERAL INFORMATION Complete legal description SCHROEDER EAST BLK 6, LOT 11 Location (site address) 17532 SANTA MARIA DR. EAGLE RIVER AK Current Property owner(s) GREG CREVISTON Day phone Mailing address _SAME Real Estate Agent Day phone 2. TYPE OF DWELLING: Single Family (w/wo ADU) ❑ Duplex ❑ Multiple Dwellings (Single Family and/or Duplex) 3. NUMBER OF BEDROOMS: 3 4. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: Individual Well ® Individual Individual Water Storage ❑ Holding Tank ❑ Community Class Well ❑ Community ❑ Public Water System ❑ Public Sewer ❑ WaiverNariance request for: Distance: Received by: 0,4-- Date: 7(. 1'Z COSA to be released to the engineer, unless otherwise requested by the engineer. COSA Fee $ Waiver Fee $ Date of Payment q1(314Date of Payment Receipt Number # Z(qb StJ Receipt Number COSA# 405C- faRp Waiver# 5. STATEMENT OF INSPECTION BY ENGINEER As certified by my seal affixed hereto and as of the validation date shown below, I verify that my investigation, based on procedures outlined in the Certificate of On-Site Systems Approval Guidelines for this application, shows that the on-site water supply and/or wastewater disposal system is (are) safe, functional and adequate for the number of bedrooms and type of structure indicated herein. I further verify that based on the information 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 MIKE N ANDERSON. P.E. Phone 727-8864 Address 4661 NATRONA AVE. Engineer's Printed Name MIKE N ANDERSON, PE Date 7/13117 r r e, -. V + ` 0 ir O 0 0 0 , 0 0 0• O G J . Co 6. DSD SIGNATURE � d " °• • CF :E N. ANDLRSCN ,''t:,•i System #1 Approved for . bedrooms. s�•. CE-9469 System #2 Approved for bedrooms. pp i ` `ti Disapproved. ug"►����.� Conditional approval for bedrooms, with the following stipulations: ON-SITE WATER AND STE`v'1,'1TER .; PROGRAM ,r II • � Original Certificate Date: 7 f q —l7 The Municipality of Anchorage Development Services Division (DSD) issues Certificates of On-Site Systems Approval (COSA) based only upon the representations given in paragraph 5 by an independent professional civil engineer registered in the State of Alaska. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineer's work. 7. ATTACHMENTS: COSA Checklist X Nitrate Advisory Septic System Advisory Arsenic Advisory Well Flow Advisory Other COSA blue sheep 10.10-12.doc If more than 1 septic system is on the lot: COSA Checklist# of Structure served by this system Certificate of On-Site Systems Approval Checklist Legal Description. SCHROEDER EAST BLK 6, LOT 11 Parcel ID. 050-07I-211 A. WELL DATA Well type AWWU If A. B. or C provide PWSID # Well Log (Y/N) Date completed Sanitary seal (YIN)_ Wires properly protected (Y/N) _ Total depth _ft. Cased to ft. Casing height (above ground) FROM WELL LOG AT INSPECTION Date of test Static water level ft. ft. Well production g.p.m. g.p.m. WATER SAMPLE RESULTS: Coliform colonies/100 mL Nitrate mgIL Arsenic: ug/L Date of sample: Collected by B. SEPTIC/HOLDING TANK DATA Tank Type/Material STEEL/STEP Date installed 6/512015 Tank size 1250 gal. Number of Compartments 2 Cleanouts (Y/N) Y Foundation cleanout (Y/N) Y Depression over tank (Y/N) N High water alarm (Y/N) NA Date of pumping NEW LESS THAN 2 YRS Pumper NEW IN 2015 C. ABSORPTION FIELD DATA—02.3/011)installed 615/2015 Soil rating (GPD/SF) 1.2_ System type 5 WIDE Length 66 ft Width 5 ft. Gravel below pipe 1.0 ft. 11 Total depth m ft3. Eff. absorption area 379.3 ft2 Monitoring tube Y Depression over field N Date of adequacy test 7112/2017 Results (Pass/Fail) PASS For 3 bedrooms Fluid depth in absorption field before test 0 in. Water added 500+ gal New depth 0 in Elapsed Time: 100 min. Final fluid depth 0 in. Absorption rate >= 500+ g.p.d. Any rejuvenation treatment (past 12 mo.) (Y/N & type) UNKNOWN If yes, give date D. LIFT STATION Date installed 61512015 Size in gallons 1250 Manhole/Access (YIN) Y "Pump on" level at 42 in. "Pump off" level at 38 in. High water alarm level at 44 in. Datum TANK BOTTOM Cycles tested 3 Meets alarm&circuit requirements? Y E. SEPARATION DISTANCES WELL ON LOT TO: Septic tank/lift station on lot _ On adjacent lots Absorption field on lot On adjacent lots Public sewer main Public sewer manhole/cleanout Sewer/septic service line Holding tank Animal containment areas Manure/animal excrete storage areas SEPTIC/HOLDING TANK ON LOT TO: Building foundation 5' Property line 5' Absorption field 5' Water main 10'+ Water service line 10'+ Surface water 100'+ Wells on adjacent lots 100'+ ABSORPTION FIELD ON LOT TO: Property line 10'+ Building foundation 10'+ Water main 10'+ Water Service line 10'+ Surface water 100'+ Driveway, parking/vehicle storage 10'+ Curtain drain 50'+(None Known) Wells on adjacent lots 100'+ F.jOMMENTS •/�, ��^I 8,)t /�(1 (� -tom � 1 (L7eV' C4 t6u-^_Qt sl 'dr k Vr I cc c ( Z'4 G. ENGINEER'S CERTIFICATION .r'StiOF.A(q '! 1 certify that I have determined through field inspections and Q;••• •:srr-t1 review of Municipal records that the above systems are in h ••� �� ' conformance with MOA COSA guidelines in effect on this date. *;49TH 61 —k J id 1.4 j • r Engineer's Printed Name N11tiF, . ;�tillf:125O\, PE / MICHAEL N. ANDERSON .`'c r Date 7/1312017 715-••• CE,-94 9 •: -i COSA canary sheet_2-6-15.doc