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HomeMy WebLinkAboutRABBIT CREEK #2 BLK 1 LT 1Rabbit Creek #2 Block 1 Lot 1 #017-063-38 The berm called out for the 2015 permit must be in place for future COSA approvals. Municipality of Anchorage On-Site Water and Wastewater Program •(907)343-7904 Page of ON-SITE WASTEWATER INSPECTION REPORT Permit Number: OSP151337 PID Number: 017-063-38 Dwelling: ❑■ Single Family(SF) ❑ Duplex(D) ❑ Multiple(SF and/or D) Project: ❑ New ❑■ Upgrade Name: Kelly McGovern ABSORPTION FIELD Address ❑ Deep Trench E Shallow Trench ❑ Bed l=1 Mound 7301 Old Rabbit Creek Rd. Anch., AK 99516 ❑ Other Phone Number of Bedrooms Soil Rating Total depth from original grade 227-7833 Three 1.2 GPD/SF 4.0 Ft. LEGAL DESCRIPTION Depth to pipe invert from original grade Gravel depth beneath pipe Subdivision Block Lot 1.0 Ft. 3.0 Ft. Rabbit Creek #2 1 1 Fill added above original grade Gravel length Township Range Section 2-2.5 Ft. 44.0 Ft. Gravel width Beds:Number of Lines Distance between lines SEPARATION DISTANCES 5.0 Ft. Ft. To Septic Absorption Lift Station Holding Sewer Total absorption area Number of trenches Dist.between trenches From Tank Field Tank Line 379.3 Ft2 One Ft. Well >100' >100' >100' >75' >25' TANK ❑■ Septic I] S.T.E.P. ❑ Holding ❑ Other Manufacturer Capacity Surface Water 591* 701* NA NA Anchorage Tank 1,250 Gal. Material Number of compartments Lot Line >5' >10' NA NANA Steel Three Foundation >5' >10' NA NA LIFT STATION Manufacturer Capacity Curtain Drain None I Noted Anchorage Tank/Orenco 250 Gal. Pump on level at Pump off level at High water alarm at Remarks *See Waiver Issued for Separation to Surface Water. 42 in. 38 in. 44 in. Pump make and model Electrical Inspections performed by OSH P2005-11 MOA PIPE MATERIAL House to tank D3034 Tank to D3034 Installer drainfield A Plus Home Services Drainfield F810 CO/MT D3034 Inspector MEA BENCH MARK (Assumed elevation) 100.0 ft Inspection ectio1't 10/27/15 2,1 10/28/15 Location and description aro 4"' Garage Slab. COMMUNITY DEVELOPMENT DEPARTMENT APPROVAL + ' 1 .�.�P F; �S1 1 Conditional Approval: Date ..Gj; •..1 I# o,4; 49TH t, '.,.,So a . . � iiir .� , �=MICHAEL E. ANDERSON .er r J,'.. CE-4381 4.- 7 .� ` +f ° pROFfssio�a` •+ Appro -,. C Date G—1 L-17 ,1tit�‘�L,r� � Inspection Report_9-1-12.doc �.wk_ Y�1tt ot- k3P L 1/t 1/r , e A 1-e C©SK QY vii' Municipality of Anchorage Permit Number OSP151337 DEVEOPMENT SERVICES DEPARTMENT Page 2 of 3 4700 Elmore Road Anchorage,AK.99519-6655-343-7904 PID NO: 017-16336 RABBIT CREEK SUBDIVISION NO. 2 LOT 3 LOT 1 , BLOCK 1 LAMB 52,957 S.F. NOTE: LANE Existing Septic Tank and Absorption OUR O YY`^r N Pit Decommissioned in Accordance ALTERNATE SITE; with Municipal Code. _ _ `—_____lf_ ----�—' Advantex Treatment System w/20' Long x 5' Wide x .5' Effective Depth Absorption Trench. Reconstruct Primary Absorption Trench. Application Rate 5 GPD/SF. L=138.06' N 9'56'00" W 112.06' 1 S: TH• 'Al SHED LOT 2 �,� `�� ASPHALT ��` 1111 M2 / DRIVEWAY co S1 \ M S rn ,/ r, `\ N THREE \ BEDROOM \ ----- ---� / HOUSE \ \\ \\ Berms to Prevent FCO 11 \ \ Direct Flow to Creek ® 1 \ \ ,k /s \ . • ‹), iN/S\ 1 \ \\\ \\ \\ I , \\ I °LL� f r WE — \ \ \ \ S. KC/ / \\ ,\ \ \ y>PK/ \ \ \ \ / Li \ \\ \ \ \ �c't3�•C' /10 int \\ \\1 \\ `\\ P/G��13 /- //� /J o J 6i.s \ \ \ N \h/ GO //{4.- / �} / 82 61.9' ` \ N N. �/ / �`� / rC• `�� 0 MH no. \ \ \ / G�/ 4r-."/ 3 ��� to M2 66 BI \ \\ \\ /f/ }� / �/1.41 Ecci 56 W 10 \\\ \\N �—'--'RAB81T— '/ �G�,4�` // o N\ N�` I��/ // Z L=62.78' f ��� S 83'42'00" E +�aaaaa>r1� �*o ;�(,Qi �. NOTE; 188 q8' •'��:••'''... ''•.��{ • Drawing Not Completed from Surveyor As e?�/. 'y So Built. Locations are not Exact. i : 49th -. �0 it 1141-44,1.1, LEGEND MICHAEL E. ANDERSON leM1 Monitor Tube i$t�cf'• No. CE-4381E / FCO — Foundation Clean Out �� TH — Test Hole 4' SCALE 1' = 40' CO — Clean Out #j'�/ E1��� Si — Septic Vent �ti11aaaaa MH Man Hole Municipality of Anchorage Page 3 of 3 DEVEOPMENT SERVICES DEPARTMENT 4700 Elmore Road Anchorage, AK. 99519-6655-343-7904 On-Site Wastewater Disposal System or Well Inspection Report Permit Number: OSP151337 PID No. 017-163-38 102.5 I Finished 97.7_, 1,250 Gallon STEP Tank 103.] 101.6 Finished Grade f 101.6 Existing Grade 2" Insulation& Geotextile Fabric 100.6 Grainfield Rock U()i3 97.6 7' 97.6 -- v Groundwater @ 92.6 9-15-15 90.6 s �1 t► 49th• ••i -cr Gr-4u -e6-7 PROFILE AS-BUILT :MICHAEL E. ANDERSON W i # • �� '• No, CE-4381 14j/ No Scale ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 (FAX) September 29, 2015 Municipality of Anchorage Development Services Department On-Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Subject: Lot 1 , Block 1 , Rabbit Creek Subdivision No. 2 Septic Tank and Absorption Trench to Surface Water Waiver Dear Onsite Services Engineer: Very little surface area is available for construction of a septic system on Lot 1 , Block 1, Rabbit Creek Subdivision No. 2 due to the location of the well on the lot and the presence of Rabbit Creek. The new absorption trench is designed for placement near the northern lot line as far away as possible from Rabbit Creek. The trench is 70' and the septic tank is approximately 59' from Rabbit Creek. A waiver is therefore necessary from the 100' setback required by Municipal Ordinance. We are proposing to construct a berm to the south of the STEP tank and absorption trench to insure any overflow of septic effluent will travel a minimum of 100' prior to discharge into Rabbit Creek. It is unlikely the septic system will overflow, but the berm will insure no contamination can occur to Rabbit Creek. We therefore request a waiver be issued allowing the septic system to remain in its location at 59' and 70' from Rabbit Creek. Sincerely, aa--1 Michael E. Anderson, P.E. c-)/ '�I • ' # 49th !\ •.•..e % • eti • / W1ANDERSON F FE: 1 $$# % No. CE-4381 rfV�i 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 99519-6650 Telephone: (907) 343-7904 Permit Number: OSP151337 Tax Code Number: 01706338000 Work Type: Septic Upgrade Permit Effective Dates: October 15, 2015 to October 14, 2016 Design Engineer: ANDERSON ENGINEERING Subdivision: RABBIT CREEK #2 Site Legal Address: RABBIT CREEK #2 BLK 1 LT 1 G2939 Owner/Address: MCGOVERN KELLY J 7301 OLD RABBIT CREEK ROAD ANCHORAGE AK 995163750 Site Mailing Address: 13770 OLD RABBIT CREEK RD, Anchorage Lot Size in Sq Ft: 52957 Total Bedrooms: 3 This permit is for the construction of: Y Disposal Field Y Septic Tank 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 berm must be in place prior to Inspection Report approval. Received By Issued By: Municipality of Anchorage men s C G ti Q� y epartmen - _ On-Srte Water and Wastewater Program *** VARIANCE/WAIVER REVIEW **** Waiver#: OSV151135 COSA#; Permit#:OSP151337 PID#: 017-063.38 Legal Description: Rabbit Creek 02 Block l Lot -1 Engineer: Anderson Engineering Applicant: kelly McGovern Your request for a :waiver of the required 100 feet horizontal separation from the absorption field and septic tank to the surface water has been approved. The approved separation distance is 75.0 feet. See the approved design for required berm locations. This waiver approval applies to the proposed absorption field and septic tank only. Any future upgrade to the on-site wastewater disposal system will require all separation distances be met or another approval from this department. FJ 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: 0 / 5 Approved by: Name of Reviewer **** VARIANCEMIAIVER REVIEW **** MUNICIPALITY OF ANCHORA Community Development Department Phone: Development Services Division Fax: On -Site Water & Wastewater Program ON-SITE SEWERIWELL PERMIT APPLICATION Parcel I.D. 017-063-38 8 9 SEP 3 0 2015 )JAM Property owner(s) Kelly McGovern Day phone ZZ 7 " 78'33 Mailing address 7301 Old Rabbit Creek Road Anchorage, AK 99515 Site address Same Legal description (Sub'd., Block & Lot) Rabbit Creek No. 2, Block 1, Lot 1 Legal description (Township, Range & Section) Lot Size 52,957 Sq. Ft. Number of. Bedrooms Three APPLICATION IS FOR: (® all that apply) Absorption Field Septic Tank 0 Holding Tank ❑ Privy ❑ Private Well ❑ Water Storage ❑ APPLICATION IS AN: TYPE OF DWELLING: Initial ❑ Single Family (SF) El (w/wo ADU) Upgrade Duplex (D) E]Renewal ❑ Multiple Dwellings ❑ (SF and/or D) THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR: Tank and Absorption Trench to Surface Water Distance: 75' I certify that the above information is correct. I further certify that this is in accordance with applicable Municipal Codes: M ichueZ £. A n.dersovt (Signature of property owner or authorized agent) - Permit/Rush Fees: Waiver Fees: Fc Date of Payment: 9A0//5 'Date of Payment:�T /T_ Receipt Number: /1 QQ�G Receipt Number: 3 Permit No. Waiver No. QcS V l 6!/35 ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 (FAX) September 29, 2015 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Subject: Lot 1, Block 1, Rabbit Creek Subdivision No. 2 Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The existing septic system on Lot 1, Block 1, Rabbit Creek Subdivision No. 2 has failed and must be replaced. 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 along with the existing system. The existing septic tank and absorption pit will be decommissioned in accordance with Municipal Code. No existing wells are closer than 100' from the proposed 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. Both the STEP tank and absorption trench will be less than 100' from Rabbit Creek. A drainage berm system has been designed to insure that any overland flow of septic effluent will travel a minimum of 100' before it can enter Rabbit Creek. The berm is shown on the Site Plan along with a construction detail. The area available for a septic system on this lot is limited by the location of the existing well and Rabbit Creek to the south. The test hole placed on the lot in the area of the proposed absorption trench indicated gravel with sand and silt (GM/GW). The percolation rate of the soil was determined to be 2.0 minutes per inch. Groundwater was found during the placement of the test hole at 9' and remained at that location 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 1,250 -gallon STEP tank and a 44' long by 5' wide by 3' 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 4'. A minimum of 3' of fill or 2" of insulation and 2' of fill will be placed over the Lot 1, Block 1, Rabbit Creek Subdivision No. 2 September 29, 2015 Page Two absorption trench and 4' over the STEP tank. The ground surface on the lot in the area of the absorption trench -slopes to the south and west at a grade approximating 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 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: 1. 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. 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. 3. 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. 4. 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 �0� 49th _!�V •°.� MICHAEL E. ANDERSON No CE -4351 e RABBIT CREEK SUBDIVISION NO. 2 LOT 1, BLOCK 1 LOT 3 52,957 S.F. LAMB No Conflicts with Well on Lot 3, Lamb Subdivision. Decommission Existing Septic Tank OUR 0 W N and Absorption Pit in Accordance with Municipal Code. LOT 2 L=138.06' NE 1 250 to Prevent STEP Flow to Creek 0 1 0 m v 0 0 O 0 N O 0 re, 44' Long x 5' Wide x 3' Effective Depth Absorption Trench TH ® MT I LANE ALTERNATE SITE: Advantex Treatment System w/20' Long x 5' Wide x .5' Effective Depth Absorption Trench. Reconstruct Primary Absorption Trench. Application Rate 5 GPD/SF, ASPHALT THREE BEDROOM HOUSE DRIVEWAY SHED ---�\puExisting Absorptoion Pit \\ \\ \ \ WELL --__ NOTE: �\ \ N\ Absorption Trench is >50' from Any Break in Grade >25%. -- L=62.78' S 83'42'00" E — F 4, 411 188.48' NOTE: 3Depth of Cover Over Septic Tank May �j Require 10 Gauge Wall Thickness. 0 BERM DETAIL. Contractor to Verify. MICHAEL E. ANDERSON No. CE -4381 . SITE PLAN SCALE t" = 40' LEGEND i 0 0 N 0 0 0 y1� MT — Monitor Tube FCO — Foundation Clean Out TH — Test Hole CO — Clean Out SV — Septic Vent MH — Man Hole LOT 1, BLOCK 1, RABBIT CREEK SUBDIVISION NO. 2 DESIGN FACTORS: SYSTEM REQUIREMENTS: Three Bedroom Home Perc. Rate: 2 Min./Inch Application Rate: 1.2 GPD/SF 5' Wide Trench System 1,250 Gallon STEP Tank 3' Drainfield Rock Pressure Distribution System 3 Bedrooms X 150 GPD/1.2 GPD/SF (Application Rate) = 375 SF Absorption Area 375 SF/5 SF/LF-.58 (Red. Factor) = 43.5 LF Trench Length THEREFORE: Construct a 44' Long x 5' Wide x 3' Effective Depth Absorption Trench at the Location Shown. Flow Line Elevation in Trench to be 1'0" Below Original Ground Surface. Total Depth to be 4' Below Existing Ground. Provide 4' Cover Over Septic Tank and 3' Cover Over Absorption or 2" of Insulation and 2' of Cover as Shown. Revegetate Mound Area 1'6" Natural th 6' Topsoil Backfill 2" Insulation 6" Geotexhle Fabric 6" O - 1" Perforated PVC (Holes Down) 30 Hales 3/16" Dia. @ 1.5' Spacing 3'0" Drainfield Rock 5' TYPICAL F WIDE TRENCH SECTION (NO SCALE) NOTE: Grade Area Over Trench to Drain Away. Minimum 6' Separation From Bedrock. Minimum 4' Separation From Groundwater. Minimum 100' Separation From Wells in the Area. Minimum 100' Separation From Surface Water or Streams. DEPTH (feet) 1 - 2 3 4- 5 - 6 - 7 - 8- 9- 10- 11- 12- 13- 14- 15- 16- 17- 18- 19- MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT 4700 BRAGAW STREET ANCHORAGE, AK 99519-6650 SOILS LOG - PERCOLATION TEST LEGAL DESCRIPTION: RABBIT CREEK No. 2, BLOCK I, LOT I PERFORMED FOR: KELLY MCGOVERN DATE: 7/28/2015 PROJECT No.: PARCEL ID#: TECHNICIAN: MA TEST HOLE 1 OB/OG GM/GW m WAS GROUND WATER ENCOUNTERED? YES IF YES @ WHATDEPTH" 9 S DEPTH OF WATER AFTER MO DEPTH To WATER BOH @ II, DATE OF MO i 4' 49th MICHAEL E. ANDERSON Psn( sional SITE PLAN SEE SITE PLAN @ EFORING 9' NITOR7NG: 9/15/15 DATE READING GROSS TIME (MINUTES) NET TIME (MINUTES) DEPTH To WATER NET DROP I(INCHES) (INCHES) TEST HOLE PRESOAKED PRIOR TO TESTING: 8/16 1 2:11/2:21 10 .75^/5.75^ 5.00" 2 2:22/2:32 10 .63'/5.63" 5.00" 3 2:33/2:43 10 .75"/5.75" 5.00" 4 2:44/2:54 10 .50"/5.50" 5.00" 5 - 2:55/3:05 10 .63'/5.63" 5.00" 6 3:06/3:16 lO .75'/5.75' 5.00" PERCOLATION RATE: 2.0 (MIN/INCH) PERC. HOLE DIA. 6N (INCHES) TEST RUN BETWEEN: 3O FT. and 4_0 FT. COMMENTS: TEST HOLE PRE SOP.KED PRIOR TO TEST. TEST PERFORMED BY ANDERSON ENGINEERING. 1, MICHAEL E. ANDERSON CERTIFY THAT THIS WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPLE GUIDELINES IN EFFECT ON THIS DATE: 9/28/15 ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 FAX September 29, 2015 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Subject: Lot 1, Block 1, Rabbit Creek Subdivision No. 2 Septic Tank and Absorption Trench to Surface Water Waiver Dear Onsite Services Engineer: Very little surface area is available for construction of a septic system on Lot 1, Block 1, Rabbit Creek Subdivision No. 2 due to the location of the well on the lot and the presence of Rabbit Creek. The new absorption trench is designed for placement near the northern lot line as far away as possible from Rabbit Creek. The trench and septic tank are approximately 75' from Rabbit Creek. A waiver is therefore necessary from the 100' setback required by Municipal Ordinance. We are proposing to construct a berm to the south of the STEP tank and absorption trench to insure any overflow of septic effluent will travel a minimum of 100' prior to discharge into Rabbit Creek. It is unlikely the septic system will overflow, but the berm will insure no contamination can occur to Rabbit Creek. We therefore request a waiver be issued allowing the septic system to remain in its proposed location at 75' from Rabbit Creek. Sincerely, 0Q WF�ti Michael E. Anderson. P.E. °• 491h /^1 •••••• MICHAEL E. ANDERSON ._ No. CE -4381 Mayor Development Services Department Building Safety Division On -Site Water & Wastewater Program 4700 Elmore Road P.O. Box 196650 Anchorage, AK 99507 www.muni.org/onsite (907) 343-7904 Pump Installation Log Well Drilling Permit Number: SW_ Parcel Identification Number: Legal Description )�wLLif Pump Installation Date: Date of Issue: Property Owner Name & Address: C f �# 2 reg K►=��y rtccro�=� �eK. rz� 7301 OLD *to R � Pump Intake Depth Below Top of Well Casing: 9,�^ feet Pump Manufacturer's Name: Re -D '5WXCI' Pump Model: 56 C501 $51 s - Pump Size I1. hp Pitless Adapter Burial Depth: 6 feet Pitless Adapter Manufacturer's Name: / Pitless Adapter Installer: Well Disinfected Upon Completion? [3` es ❑ No Method of Disinfection: C L6e+ni. ee � c75 Comments: Pump Installer Name: ►1✓1 C ki 0K0611, W C { I OL Pv tr 1P SEevcm Attention: The pump installer shall provide a pump installatiln log to the DSD within 30 days of pump installation.