Loading...
HomeMy WebLinkAboutTIMBERLUX #1 BLK C LT 1AOnsite File Municipality of Anchorage On -Site Water and Wastewater Program • (907) 343-7904 Page 1 of 3 ON-SITE WASTEWATER INSPECTION REPORT Permit Number: OSP 171207 PID Number: 018-271-01 Dwelling: ❑■ Single Family (SF) ❑ Duplex (D) ❑ Multiple (SF and/or D) Project: ❑ New ❑■ Upgrade Name: Walton and Anne Crowell ABSORPTION FIELD ❑■ Deep Trench ❑ Shallow Trench ❑ Bed ❑ Mound Address 4200 Bay View Drive Anchorage, AK 99516 ❑ Other Phone Number of Bedrooms Soil Rating Total depth from original grade 570-8177 Four (4) .6 GPD/SF 12 Ft. LEGAL DESCRIPTION Depth to pipe invert from original grade 5 Ft. Gravel depth beneath pipe 7 Ft. Subdivision Block Lot Timberlux No. 1 C 1A Fill added above original grade 3.8 Ft. Gravel length 74 Ft. Township Range Section Gravel width 3 Ft. Beds: Number of Lines Distance between lines Ft. SEPARATION DISTANCES To Septic Absorption Lift Station Holding Sewer Total absorption area Number of trenches Dist. between trenches From Tank Field Tank Line 1,036 Ft z 1 Ft. Well >100' >100' N/A NSA >25' TANK ❑� Septic ❑ S.T.E.P. ❑ Holding ❑ Other Manufacturer Anchorage Tank Capacity 1,500 Gal. Surface Water > 100' >100' N/A N/A Material Steel Number of compartments Two Lot Line >5' 71* N/A N/A NA Foundation >10' >10' N/A N/A LIFT STATION Manufacturer Capacity Gal. Curtain Drain None Noted Remarks *See Lot Line Waiver. Pump on level at in. Pump off level at in. High water alarm at in. Pump make and model Electrical Inspections performed by PIPE MATERIAL House to tank D3034 Tank to drainfield D3034 Installer \\ Drainfield D3034 CO/MT 3034 Inspector SG�\�� BENCH MARK (Assumed elevation) 100 ft Inspection 1" 6/26/18 6/27/18 Location and description 2nd da Lower Level Finished Floor. 3d 4th COMMUNITY DEVELOPMENT DEPARTMENT APPROVAL Engineer's Stamp Conditional Approval: Date AS"��� . • ' . S/Vj,� 49 TH LQ••Irl ......................� �• Michael E. Anderson �'F• 4381-E •`�/ Approved Q � � Date i off � ,l�iFDPROFESSIONA���' Inspection Report_9-1-12.doc TIMBERLUX NO. 1, BLOCK C, L0T1A PERMIT # OSP171207 PID # 018-271-01 ONE BEDROOM ADU LOT 1A I EXISTING WELL A B C D FC01 107.5 121.3 ` FCO2 40.4 '11.5 C01 30.0 26.6 CO2 59.1 54.1 SV1 79.9 71.3 SV2 88.2 79.0 2CO 93.0 83.5 CO3 80.7 66.4 MT1 86.1 70.8 C04 152.6 133.7 MT2 147.9 128.9 TINGE ENGINEERING .�Aw,..... - !g .9 I * - TH :* enjamin Schiller .' . C P 24 098 Ili►�� PROFES510NA��,�'�" THREE BEDROO 1 HOUSE I C I 74' LONG, 7' EFFECTIVE DEPTH, 3' WIDE TRENCH FCO2 MTT MT2 _ C04 10' UTILITY EASEMENT 0 50 100 FEET 111=50' ALTERNATE SITE LEGEND CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANO MT - MONITORING TUBE SV - SEPTIC VENT TH - TEST HOLE CO2 10' UTILITY EASEMENT 0 50 100 FEET 111=50' ALTERNATE SITE LEGEND CO - CLEANOUT 2CO - DOUBLE CLEANOUT FCO - FOUNDATION CLEANO MT - MONITORING TUBE SV - SEPTIC VENT TH - TEST HOLE TIMBERLUX NO. 1, BLOCK C, LOT 1 A PERMIT # OSP171207 PID # 018-271-01 r N O LL OU Cn Cn N 100.5 /- 95.1 94.1 1500 GAL 93.95 SEPTIC TANK 0� O 102.6 FINISH GRADE U 98.8 ORIGINAL GRADE �- GEOTEXTILE FABRIC 93.8 93.8 DRAINFIELD ROCK 86.8 86.8 r� 74' 80.8 NO GROUNDWATER 10/17/14 TH DEEPENED TO 18' PRIOR TO CONSTRUCTION a \\` J _ •� i PROFILE AS -BUILT •Michael E. Anderson . (NO SCALE) 1� ,%P1E Munkipality of Anchorage P.O. Box 196650 0 4700 Elmore Road Anchorage, Alaska 99519-6650 0 (907) 343-7904 o Fax (907) 343-7997 http://www.muni.org/Onsite Development Services Department On -Site Water and Wastewater Section x x x* VARIANCE/WAIVER REVIEW * x x x aiver#: OSV181039 COSA# D#: 018-271-01 Permit#: OSP171207 gal Description: Timberlux #1 Block C Lot 1A Engineer: Forge Engineering Applicant: Walton and Anne Crowell Your request for a waiver of the required 10 feet horizontal separation from the absorption field to the property line has been approved. The approved separation distance is 7.0 feet. This waiver approval applies to the existing absorption field only. Any fixture upgrade to the on- site wastewater disposal system will require all separation distances be met or another approval from this department. Waiver is Granted: X Waiver is not Granted: Date: -11511 R Approved by: kele-�% Name of Reviewer ■ a e ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ v a ■ ■ ■ ■ a a ■ ■ e ■ ■ ■ ■ ■ ■ ■ v ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ a ■ a **** VARIAN C EMAIVE R REVIEW **** Apftft- GE ENGINEERING PO BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 (FAX) July 12018 Municipality of Anchorage Development Services Dept- On -Site Water & Wastewater Program 4700 Elmore Rd Anchorage, AK 99507 Subject: Timberlux #1, Block C, Lot IA — 4200 Bay View Drive Septic System Lot Line Waiver Dear On Site Services Engineer: osviblo39 6x15 A second absorption system was recently placed on the subject lot. Insufficient survey control was apparently used in the location of the absorption trench as the east end was constructed in 7' from the east property line. The trench does not impact the property to the east as it is a large 10 acre parcel. The absorption trench is much more than 100' from the well on the lot and a significant distance greater than 16' from the septic system. We request a waiver be issued allowing the trench to remain 7' from the east property line. Sincerely, E O's, Michael E. Anderson, P.E. °�• 49th°. :A --.MICHAEL E. ANDERSON i •• NO. CE -4381 �O�pROFESSI�N� �� GE EHGIHEERING PO BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 (FAX) July 3, 2018 Municipality of Anchorage Development Services Dept- On -Site Water & Wastewater Program 4700 Elmore Rd Anchorage, AK 99507 Subject: Timberlux Block C Lot 1A — 4200 Bay View Drive Adjacent Subsurface Soil Investigation Dear On -Site Services Engineer: The owner of the subject lot has installed a new septic system under permit OSP171207. A requirement of the permit was to perform an additional perk test in order to document the consistency of the subsurface soils over the entire area of the trench and alternate site. This became difficult during construction because the area near the trench that was not wooded became covered with stockpiled soil to be used as backfill for the trench. In accordance with the exception listed in 15.65.210.0 of the recently -released code, we would like to present the results of our investigation into the soils on surrounding lots to show that the entire area is undermined by soils with consistent absorptive characteristics. The test hole on this lot had a tested perk rate of 24 min/in. We then researched test hole results for every property nearby, and the following table was developed. Our research verified that all documented rates were under the percolation rate encountered on Lot IA with one exception which was slightly higher at 30 min/in. Legal description Timberlux Block A Lot 3A Timberlux Block A Lot 7A Timberlux Block A Lot 11A Timberlux Block A Lot 13A T12N R3W Sec33 L251 T12N R3W Sec34 PTN SW4 SW4 SW4 Percolation rate 15 min/in 16 min/in 85 SF/BDRM (Visual) 22 min/in 5 min/in, 30 min/in (Two TH) 9.2 min/in We request these results be accepted in lieu of an additional perk test on Lot IA. Sincerely, Michael Michael E. Anderson, P.E. .C.J_. *: 49 zH ...................... . Michael E. Anderson mac" 4381-E lWV PROFESSTAt;.e ELEVATION TABLE EXISTING PROPOSED 353.2 A 354.8 352.8 B 354.8 352.3 C 354.8 351.7 D 354.8 351.3 E 354.8 350.8 F 354.8 350.8 G 354.8 352.2 H 354.8 351.3 1 354.0 350.0 J 349.1 348.8 K 349.1 349.3 L 349.1 349.1 M 349.1 349.2 N 349.1 350.8 0 354.8 352.1 P 354.8 352.4 Q 354.8 352.3 R 354.8 352.2 S 354.8 352.2 T 354.8 352.3 U 354.8 352.6 V 354.8 352.4 W 354.8 352.3 X 354.8 NOTE: LOT COVERAGE = 3.8% LEGEND 104.8 EXISTING ELEVATION 103.0 PROPOSED ELEVATION SURFACE DRAINAGE HOUSE DETAIL V - SCALE: 1"=30' r I ul \ \ ROOF OVERHANG` N \ T \ SI 95' O \ -o J L=69.87 350.7 \ 4t R=35.003so.7 \�G 2.0'x20.0' CANT s ss. \ 4q 00 F 3 JSS,s\ EXISTING 2 STORY ACCESSORY DWELLING UNIT m. r 113.4' O J4' m 4' z 0 o / 0 / v � I Lot 1 A 2.49 Acres 108,580.4 s.f 354.0.. .:2.09, .. 10' UTILITY EASEMENT N W _ X _ A 30.0' IB GARAGE I EL. 355.0 ic 0IN IE F.F. EL. 359.3 o rHl �F 4 Js' G M Li L DECK \ - TOP OF 5/8' REBAR ELEV. 358.5 M Off' Z o'. I�p � A LL LO _O U Ol P,0.. :z pp4��•� :x n O h o` c• E Q c 00 of 109.0' \\\ Ox C v 4; CL C O O °oee e t �� uZ •oto Q o o- Em N> n N r e zE r N q d V N C ")QeaZa n I • :me av o�°o' N1°viu I I °3 co ° oa vt Lm�icse OnP06 eonv°; OZ _ oe I rc^ooec vvY a«c£o`o C e• 0 =I o$ ° �O ^ FL e Qe 3 9 / m > 0. � . o w o V) -C 2.0 no a- =0 o 00 / 0o m LO ozE+eae v et II men• +' o ._ %` • t cz�a�e c •o o o . ^I ;� C. o cL • yr c� E v � (n L zoo o�O° Vic. (nw U 0 e�r- uoi.c .-� v0 " o ° O1 s e I 0'a SEPTIC D -� m a - n ° O - v c e PIPES °� m (n n c E a O v I Uc C tx-°O-to� o ; o Cj v JQv °y e v J J e W O C 0 Lm" - o. m N- om-v • 354.5 (n if N • L~ C C e o O c O 354.5 Q �l C Cj oo- r a O eN ° c °+v �va£�t6 f a« Mn �O X1 I t0 o a c:F NtmzoaEco n`o OAS 0. Q oO~~n E o .e ~O L LEe m o CL J <3cae oo zv 1.s,[iPALI,v MUNICIPALITY OF ANCHORAGE ,,,;,,r On-Site Water &Wastewater Program N•, •Sof PO Box 196650 4700 Elmore Road Anchorage,Alaska 99519-6650 Phone:(907)343-7904 Fax:(907)343-7997 http:llwww.muni.orglonsite 115-111-11-11 I)t Iwrtmcnt On-Site Wastewater Disposal System Permit Permit Number: OSP171207 Effective Date: 8/2/2017 Work Type: Septic Upgrade Expiration Date: 8/2/2018 Tax Code Number: 01827101000 Site Legal Address: TIMBERLUX#1 BLK C LT 1A G:3136 Site Mailing Address: 4200 BAY VIEW DR, Anchorage Owner: CROWELL WALTON D & ANNE G Lot Size in Sq Ft: 98200 Design Engineer: ANDERSON ENGINEERING Total Bedrooms: 4 This permit is for the construction of: 11 Disposal Field El Septic Tank ❑ Holding Tank ❑ Privy ❑ Private Well ❑ Water Storage All construction shall 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 shall notify the Development Services Department per AMC 15.65. Provide notification by calling (907) 343-7904 (24/7). 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather shall be either: a. Opened and Closed on the same day, or b. Covered, sealed, and heated to prevent freezing Special Provisions: The test hole shall be deepened to 18 feet at time of construction to demonstrate 6 feet of separation to any impermeable barrier. Also, an additional percolation test shall be completed at time of construction so that at least 90% of both the proposed primary and alternate trenches are within a 30 foot radius of a percolation test. Received By: Ott- Date: 6 Issued By: i (' R Date: sAr20l 7 Ir N � MUNICIPALITY OF ANCHORAG JUL 31 201 z �� Community Development Department ` r Phone: 9074431- 14� Development Services Division Fax: 907-3437997 On-Site Water& Wastewater Program ON-SITE SEWER/WELL PERMIT APPLICATION Parcel I.D. 018-271-01 Property owner(s) Walton & Anne Crowell Day phone 570-8177 Mailing address 4200 Bay View Drive Anchorage, AK 99516 Site address Same Legal description (Sub'd., Block & Lot) Timberlux#1, Block C, Lot 1A Legal description (Township, Range & Section) Lot Size 98,200 Sq. Ft. Number of Bedrooms Four (4) 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 ❑ Privy ❑ (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. 74412 E a4•%-e.e. 1 (Signature of property owner or authorized agent) Permit/Rush Fees: G9(00 Waiver Fees: Date of Payment: ri l I�1 Date of Payment: Receipt Number: 00c-o3G Receipt Number: Permit No. O51°l1 t2-01 Waiver No. Permit App_9-1-12.doc ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 (FAX) July 31, 2017 Municipality of Anchorage Development Services Department On-Site Water and Wastewater Program 4700 Elmore Road Anchorage, AK 99519-6650 Subject: Lot 1A, Block C, Timberlux Subdivision No. 1 Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of the subject lot intends to construct a one bedroom ADU on the property. A three bedroom home is currently in place on the lot. We are therefore requesting a permit be issued for the upgrade of the septic system to accommodate the four- bedroom complex on the lot. An existing septic system is in place on the lot, but the configuration and exact location is unknown. The attached Site Plan and backup documentation identify the location of the existing well and proposed septic system. The existing septic system will be decommissioned in accordance with Municipal Code. No conflicts exist between the proposed septic system and the wells on this or adjacent lots. Drainage arrows are shown indicating the current drainage patterns. The ground surface in the area of the proposed trench is virtually flat. The drainage patterns will be maintained after construction. The test hole recently placed on the lot indicated Sandy Gravel with some Silt (GM) in the absorption zone of the proposed trench. The percolation rate was determined to be 24 minutes per inch. No groundwater was encountered during the placement of the test hole and none was noted during the monitoring period. We have designed the new absorption system with an application rate of .6 gallons per day per square foot. We are proposing to place a new 1 ,250 gallon septic tank along with a 72' long trench by 3' wide absorption trench with a 7' effective depth. The total depth of the system will be 12' with the distribution line at 5' below the surface. The test hole will be deepened to 18' prior to construction to verify the lack of bedrock or impermeable material in the area. Lot 1A, Block C, Timberlux #1 July 31, 2017 Page Two The ground surface on the lot in the area of the new trench flows slightly to the southwest and perpendicular to the proposed trench. The trench will be constructed in accordance with Municipal Code. A minimum of 100' will be maintained between all components of the septic system and the proposed well and from any surface water 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, 7/44- L L Michael E. Anderson, P.E. Attachments OF q ' 49th •v,• MICHAEL E. ANDERSON • al ♦ �� NO. CE-4381 ,'S� TIMBERLUX SUBDIVISION NO. 1 L BLOCK C, LOT 1A \ \ \ eI4 - 350.7 `\ £h/ ` 350.7 \ \ 44/V£ s ss. 44 b0,4. 3556 3.9IlA \�\ sit Lot 1 A - ---- ,� 2.49 Acres `\ P1 108,580.4 s.f. ,- -,. ,;o \ II- I ''-)'\ M O / One / Bedroom /XI / ADU \ M i Z \\ O• \ XI 0 \ 1O // O 1 -• / I Existing® Bedroom 1 1 CO Home I • CII I Well I 'P 1FCO 1 1 (0 NOTE: \ co Maintain 25' Separation w Between Well and Sewer CO Existing Sep I 0 i \ stem. Exac /CO O Service Line. Loco'•• Unknow 1R 00 \ Ai Site b ' \\ /��'�• 2C0 O Decommission ExistingN 1,250 Gallon ® N Septic System in Accordance dSSeeptic Tank TH1 with Municipal Code. / Long —__ 73• x 3' Wide x 7' Effective Depth Absorption Trench 10' UTILITY EASEMENT �% ,, CO 3080 N 90'00'00”W 394.58' 354.5/ 308.0 354.5 �O NOTE: �� NN, No Conflict with Wells or Septic vg�\��� •••t9.. Systems on Adjacent Lots. NS jglP ''• •:v vi v *: 49TM /\ '.* / LEGEND � SITE PLAN MT — Monitor Tube g*it.:44,:e. � FCO — Foundation Clean Out MICHAEL E.ANDERSON +,,%F�F `3�1�P`�ti•�� SCALE 1 " = 60' TH — Test CO --CleanHole Out PROFESS\ON . 2C0 Double Clean Out LOT 1A, BLOCK C, TIMBERLUX NO. 1 DESIGN FACTORS: SYSTEM REQUIREMENTS: Three Bedroom Home/1 Bedroom ADU Deep Trench System Perc. Rate: 24 Min./Inch 1,250 Gallon Septic Tank Application Rate: .6 GPD/SF 7' Drainfield Rock 4 Bedroom4 X 150 GPD/.6 GPD/SF (Application Rate) = 1,000 SF Absorption Area 1,000 SF/14 SF/LF = 71.4 LF Trench Length THEREFORE: Construct a 72' Long x 3' Wide x 7' Effective Depth Aborption Trench at the Location Shown. Flow Line Elevation in Trench to be 5' Below Original Ground Surface. Total Depth to be 12' Below Existing Ground. Provide 3' of Cover Over Trench and 4' Over Tank or Provide 2" of Insulation and 2' of Cover. Maintain 25' Separation From Sewer Service Line and Well on the Lot. Natural \ Backfill 4'6" Geotextile Fabric 6„ 4" Perforated PVC (Holes Down) Drainfield Rock 7'0" 3' TYPICAL DEEP TRENCH SECTIONOF••••"'•`��`, (NO SCALE) ���P ................ ,•� NOTE: Grade Area Over Trench to Drain Away. . } • �1 Minimum 6' Separation From Bedrock. 49th �� Minimum 4' Separation From Groundwater. i .�` Minimum 100' Separation From Private Wells in the Area. i 7o: Michael E.Anderson r Minimum 100' Separation From Surface Water or Streams. Ic7 • _`�� Minimum 10' Separation From Water Service Line. �js� .., No.CE�81 ** P1 OF ESS 0,6,1"44 ?//L L -a+ • + 1,. GARNESS ENGINEERING GROUP, Ltd9�' ..L�J�. • CIVIL&ENVIRONMENTAL ENGINEERS 0 2731 E 11:120R R00.3.MEE 101•ANCHORAGE.AY 00:247•ROHE(9C7) 1376178•GAY 16E" 22,? -E'AF 9'`c.+a,*26P e,aa+greenrq 7,77 •..• • • • • ... • 1- Garne• •moi SOIL LOG - PERCOLATION TEST •�0... f CE-7953 �'' LEGAL DESCRIPTION: TiMBERLUX#1:BLOCK C,LOT 1A ♦.U''r4 /0/70./.0034,� PERFORMED FOR: MAYO RESEARCH DATE: 10/9/2014 '4 7°ROFESSOI : DEPTH• -- {}RG ,'1.1 assA►♦♦ (feet) •= TEST HOLE #1 1 —• • ▪ ! ■ SOIL CLASSIFICATIONS SITE PLAN • ■ ;a. -o-'i GW ORG • 3 • • `` `I ' GP i_ ML ■ /3 � GM f/�� CL 4 • ��s'4GC 1 OL 0.'F.; SW j MH Q 5 . SP �� CH C;\ • ■ • SM / / /,/,, OH Q r • SC C) 7 —. • • DEPTH TO DATE Q' 1\ik • • GROUNDWATER �((i N • GJ 8 • • DRY —10/9/2014 1 ■ DRY 10/14/2014 SCALE. 9— • UM' DRY 10/17/2014 I ✓ r=1W' • ■ • 10 ■ • r ��. I; -Lil,.1I CLOCK NET TIME WATER LEVEL NET DROP • I I TIME (MINUTES) READING (INCHES) r i2 • • 10/14/2014 1 1:33 - 6" • • 2 2:03 30 4.75' 1.25" • ■ 13 — 3 2:03 6" : 4 2:33 30 4.75" 1.25" 14 5 2:33 6" r • • 6 3:03 30 4.75" 1.25" 15 • • • It • 16 B.O.H. 17 18 PERCOLATION RATE 24 (MIN./INCH) PERC. HOLE DIA. 6 (INCHES) 19 — TEST RUN BETWEEN 5 FT. AND 6 FT. 20 A FOUR HOUR PRESOAK VvAS PERFORMED: is YES I I NO SOILS LOGGED BY: ANDREW GRAY PERCOLATION TEST PERFORMED BY: DAVID GARNESS COMMENTS: PERCOLATION READINGS ARE WITHIN 1/16 OF INCH. PERFORMED BY GEG,Ltd. I,JEFFREY A.GARNESS,CERTIFY THAT THIS WAS P�RFO MED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE: /0' Z-0 ic./