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HomeMy WebLinkAboutFOREST CREEK LT 2Forest Creek Lot 2 #015-292-50 i Municipality of Anchorage Development Services Department Building Safety Division On-Site Water and Wastewater Program, 4700 Bragaw St. P.O. Box 196650 Anchorage, AK 995198050 Page of www.d.anchorage.ak.us (907) 343-7904 ON-SITE WASTEWATER DISPOSAL SYSTEM AND/OR WELL INSPECTION REPORT Permit Number. SWO90195 PID Number. 015.292.50 wm. Northam Home Builders Wastewater System: Q New ❑Upgrade 5725 Yukon Charlie Loop Anchorage, AK 99502 ABSORPTION FIELD Phar. 830-2052 N. W a e.000me Four O Deep Tm RI slax w Tarin 0 ew O ManeSat O Otrlr LEGAL DESCRIPTION �n' 1.2 Toao.va 9 Gpose Ft. ls� Lea 2•� DWM O P"Coewn M1an WWW W. 13. d"th e V W Forest Creek 5 �. 4 n Towmny Rrpe sw Fm.aaa.00warpwp.M Grnm LWP 0-1 FI. 50 Fr. Well: O New Upgrade Gawr r,.ao.a4.. Ddttv,, ,... 5 Ft. CMwararan (Pmme A B. Q Tau De Ceom O Tau aowmptan tem Pp mr" Private 101 Ft. 101 FL Soo Fit ASTM D3034 PVC Dnw Dee 0r sw;; WMer Lew x 'w owe 1m w Alpine Drilling 10/15/09 55 FL Sanders 8 Sanders 12/10/2009 rad Pump souComp H@q"A Grwna TANK 10 GP4 Ft. >2 FL SEPARATION DISTANCES 0 Septic ❑ Holding ❑ S.T.E.P. ❑ Other. To Septic Absorption LIR Holding lutwKiprivilte °q1'r ry From Tank Field Station Tank Sower Ura Anchorage Tank 11.250 cm msI 14 n aCanw•ranenM ww >100' >100' NIA WA >25' Steel Two (2) SaeenwM« >100' >100' N/A NIA LIFT STATION La L•I• >5' 8"•• NIA NIA Go a,..r 'Puny tll' MNI .L .F�p err M.M M �I wpY YYrr1 M Fa4q•oon >5' >IT NIA NIA w M n Purw Mew a Moots EMaaxI1 ImpeCaOn• pararama by C~ Oren None Noted R� —See Lot Una Waiver. BENCH MARK Lauuan ena D•wpuon Garage Slab wean 100.00 FL E Inspections performed by: A. Harala Dates: 10 12/10/09 a �F •�Qt� 11� •' •• , ••;�,f'l� .Zne 12/10/09 ,tP Development Services Department Approval 49D Conditional Approval Date: .......... .r .. ..... . y� I, rP^ E ANDERSON: �MKHAEI J :• CE -4381 G ••�� .f •.-v-in..•.�;PA ���I Reviewed and approved by: Date: D Io "ROFESSION4. ta.. wmat t lwii, i 2\ \ : e _+_.. : : .. a) « o§ ,\ --- - - - - - - - - - - - - - - - - - - - - - - - - -,,. EL G ; : ) ,x\\}Z ,fes a E ,[;[)( , !§ 2 £ /0u L) §ƒ _ wLo © 2 9 \| § tm Li ƒc/\ m k` cu E 2 ? � ` �� /\ (� ®5 { ® $. V f \§// Z� q§ Li !Li CLU )3 Z § �0- Q LU U) 22LLJ 022 E LL - 0:= 6 �0B tis Li K� / / ---------------- - ---- - § 00W� _«r. m _ tCYOU 30 300 - 2 a @ mo { � Municipality of Anchorage Page 3 of 3 DEVEOPMENT SERVICES DEPARTMENT 4700 South Bragaw Street Anchorage, AK. 99519-6655 - 343-7904 Onsite Wastewater Disposal System or Well Inspection Report Permit Number. SWO90195 PID No. 015-292-50 99.5 U fn �N UU PROFILE AS -BUILT 'ip,-No. cE No Scale 92.0 03/11/2010 11:08 907-245-6269 Depth (ft) Method of Drilling x air totary ❑ cable tool PAGE 02/02 _ Alpine Drilling & Enterprises Well Log Permit Number: NSW090195 Date of Issue: 9-30-09 Parcel Identification Number: 015-292-50 Date Started: 10-1,0-0 Date Completed: 10-15-09 is well located at approved permit location? x Yes ❑ No Legal Description: Forest Creek Lot 2 Property Owner Name R Address: Northern Home Builders 5725 Yukon Charlie Looa Borehole Data: Depth (ft) Method of Drilling x air totary ❑ cable tool Soil Type, Thickness & Water Strata From To Casing typeis eel Stick-up 0 2 Wall Thickness:,U inches _ silt 2 7 Diameter: ¢ inches Depth: jib Lett Liner Type: gravelly silt 7 15 _ Diameter: — inches Depth: _ feet sandysllt 13 32 Casing stickup aboveground: 2feet Static water level (from ground level): 1afeet gravelly silt 32 63 silt 63 70 Pumping Icvcl: 101 feet after silty water sand &gravel 3 gpm 70 73 hours pumping LQ gpm Recovery Rate: Z gpm silt 73 85 Method of Testing: gijr jift gravelly sandy silt 83 90 Well Intake Opening Type: silty sandy water 2 gpm 90 92 x Open End ❑ Open Hole gravelly silt 92 98 ❑ Screened Start _ feet Stopped _ feet ❑ Perforations Start feet Stopped feet water sand &gravel 98 101 _ Grout Type: ntoniterranules Volume:2bQs Pomp: Intake Depth_ feet Pump size _ hp Brand Name IIWell Disinfected Upon Completion? x Yes ❑ No II Method of Disinfection: chlorine tablets Comments: Well Driller: Alpine Drilling & Enterprises PO Box 110496 Anchorage AK 99511 Development Services Department Building Safety Division On -Site Water & Wastewater Program 4700 Elmore Street P.O. Box 196650 Mark 6egich Anchorage, AK 99519-6650 Mayor w ,muni.ora/onsite (907)343-7904 Pump Installation Log Well Drilling Permit Number: SW090195 Date of Issue: ZD Parcel Identification Number: 015-292-50 Replacement Only: YES NO II Legal Description 11 Property Owner Name & Address: II Lot 2, Forest Creek Pump Installation Date: 311012010 Pump Intake Depth Below Top of Well Casing: 95 feet Pump Manufacturer's Name: Grundfos Pump Model: IOSQE07-200 Pump Size 314 hp Pitless Adapter Burial Depth: 10 feet Pitless Adapter Manufacturer's Name: Campbell Pitless Adapter Installer: Sanders & Sanders Well Disinfected Upon Completion? ® Yes ❑ No Method of Disinfection: Recirc Comments: Ray Nickel Homes Pump Installer Name: Aarow Pump & Well Service LLC PO Box 110496,Anchorage, AIG 99511 (907) 346- 9355 Attention: The pump installer shall provide a pump installation log to the DSD within 30 days of pump installation. ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 •7773 677-7766 (F April 8, 2010 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Program P.O. Box 196650 Anchorage, AK 99519-6650 Subject: Lot 2, Forest Creek Subdivision Separation Distance Waiver Absorption Trench to Lot Line Dear On Site Services Engineer: The absorption trench for Lot 2, Forest Creek Subdivision was constructed before the lot lines were surveyed or clearly marked. Unfortunately the contractor excavated the trench within 8' of the lot line. It will also be necessary to locate the alternate site within 8' of the lot line to provide sufficient clearance from the house foundation. The subsurface soil in the absorption area is clean sand which absorbs water well. The absorption trench on the adjacent lot to the north is more than 50' from the edge of this trench. No impacts to the adjacent lot will result from the placement of the absorption trench at its current location. We hereby request a lot line waiver be issued to allow the trench to be within 8' of the northern lot line. Sincerely, Michael E. Anderson, P.E. ,. ° . ys f. 49: } VC -A.. C AV!:iSC\ \o. V_ . _SS Municipality of Anchorage P.O. Box 196650 • 4700 Elmore Road Anchorage, Alaska 99519-6650 • (907) 343-7904 • Fax (907) 343-7997 htto:llwww.m uni.orgl0 nsite Development Services Department Onsite Water and Wastewater Program Mery S' �e c A Department **** VARIANCE/WAIVER REVIEW **** WR#: 100008 HAM 100088 Permit#: 090195 PID#: 015-292-50 Legal Description: Forest Creek Lot 2 Engineer: Anderson Engineering Applicant: Northern Home Builders 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 8.0 feet. This waiver approval applies to the existing absorption field to property line separation only. Any future upgrade to the on-site wastewater disposal system will require all separation distances be met or another approval from this department. ......................................................6698..................... Waiver Is Granted: x Waiver Is not Granted: Date: 41121201 Approved by: 71N� of Reviewer ................................................. . ........................... Rec#: 010726 Amount: $200.00 Date Paid: 4-9-10 **** VARIANCEIWAIVER REVIEW **** MUNICIPALITY OF ANCHORAGE Development Services Department On -Site Water 8 Wastewater Program 4700 South Bragaw Street P.O. Box 196650, Anchorage, AK 99519-6650 (907) 343-7904 ON-SITE WASTEWATER DISPOSAL SYSTEM I WATER SUPPLY PERMIT Initial Permit Number: SW090195 Legal Description: FOREST CREEK LT2 Date Issued: Sep 30, 2009 Expiration Date: Sep 30, 2010 Parcel ID: 015-292-50 Design Engineer: 0014 ANDERSON ENGINEERING Site Address: 10103 OUR RD Owner Name: NORTHERN HOME BUILDERS Lot Size: 40122 SO. FT. Owner Address: 5725 YUKON CHARLIE LOOP Total Bedrooms: 4 Permit Bedrooms: 4 ANCHORAGE. A 99502 - This permit is for the construction of: Disposal Field ❑✓ Septic Tank ❑ Holding Tank ❑ Privy Private Well ❑ 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 engineer must notify DSD at least 2 hours prior to each inspection. Provide notification by calling (907) 343-7904 ( 24 hours ). ( Not required for a Water Supply Permit only). 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather must be either: A. Open and closed on the same day. B. Covered, sealed, and heated to prevent freezing. 5. The following special provisions. A. 10/14/09 JC: Permit design completely revised. Received Issued Date: V - ° CR Date: /6 �' ee% Municipality of Anchorage Development Services Department Building Safety Division On -Site Water and Wastewater Program 4700 Bragaw Street P.O. Box 196650 Anchorage, Alaska 99519.6650 www.muni.org/onsite (907)343-7904 ON-SITE SEWER/WELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. 015.292-50 Property owner(s) Northern Home Builders Day phone 830-2052 Mailing address 5725 Yukon Charlie Loop Anchorage, AK Zip Code 99502 Site address 10103 Our Road Anchorage, AK Zip Code 99516 Legal description (Sub'd., Block & Lot) Lot 2, Forest Creek Subdivision Legal description (Township, Range & Section) Lot Size 40.122 Sq. Ft. THIS APPLICATION IS FOR (® all that apply) Absorption Field El Septic Tank El Holding Tank ❑ Privy ❑ Private Well ❑ Water Storage ❑ Number of Bedrooms Four (4) THIS APPLICATION IS AN: Initial I] Upgrade ❑ Renewal ❑ I certify that the above information is correct. I further certify that this application is being made for a Single Family Dwelling and is in accordance with applicable Municipal Codes. (Signature of property owner or authorized agent) Pennit/RushFees: 730 Waiver Fees: Date of Payment: Date of Payment: Receipt Number. Receipt Number. (Rev. 1 V05) # , Municipality of Anchorage ONSITE NATER & WASTEWATER PROGRAM CHANGE ORDER SUBD Forest Creek BLOCK_LOT 2 CONTACT PERSON Mike Anderson 522-7773 677-7766 (Fax) PLEASE GIVE A DESCRIPTION OF THE CHANGE Soils encountered during construction consisted of fine RIM- W-w-MOTINam. 741 � .- CUSTOMER SIGNATURE %��ci G�dr(i �• l Cts APPROVED (date) 10 & Q'd TOTAL HOURS Q HOURLY RATE 5130 TOTAL TO BE PAID DATE PAID ((// RECEIPT A On -211,e Revier: Comments Issued (date) Review Time (hours) APPROVED (date) 10 & Q'd TOTAL HOURS Q HOURLY RATE 5130 TOTAL TO BE PAID DATE PAID ((// RECEIPT A ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 FAX MEMORANDUM DATE: December 10, 2009 TO: Jay Crewdson, P.E. FROM: Mike Anderson, P.E. SUBJECT: Lot 2, Forest Creek Subdivion Well and Septic System Permit No. SWO90195 We have encountered loose clean sand in the area of the new absorption trench for Lot 2, Forest Creek Subdivision. It is difficult to hold the trench sidewalls vertical during excavation. We have therefore revised the design of the trench to a 5' wide by 4' effective depth with a length of 50'. The total depth of the trench will be 8'. We hereby request the permit for the septic system design be revised to accommodate this change. z "' i A 0 g es N h m n e® rb �(nCV4 r rte. • O I I 6 1. 1 N n\ LLI Of o LL - w3 e n ,00'f[l MUC.20M N O M avow ano 0 0 0 �€ 3 0 0 viI Its A LOT 2, FOREST CREEK SUBDIVISION DESIGN FACTORS: SYSTEM REQUIREMENTS: Four Bedroom Home 5' Wide Trench System Perc. Rate: 1.2 Min./Inch 1,250 Gallon Septic Tank Application Rate: 1.2 GPD/SF 4' Drainfield Rock 4 Bedrooms X 150 GPD/1.2 GPD/SF (Application Rate) = 500 SF Absorption Area 500 SF/5 SF/ LF'.5 (Red. Factor) = 50 LF Trench Length THEREFORE: Construct a 50' Long x 5' Wide x 4' Effective Depth Absorption Trench at the Location Shown. Flow Line Elevation in Trench to be 4' Below Original Ground Surface. Total Depth to be 8' Below Existing Ground. Provide 4' Cover Over Septic Tank and 3' Cover Over Absorption Trench. Maintain 100' Separation from Wells in the Area. 3'6" Cil 4'0" Natural Backfill 5' Geotextile Fabric 4" Perforated PVC (Holes Down) Drainfield Rock TYPICAL 5' 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. -1113-. • �yy ' 49th ••••s. �? ryq; MiGuEL R. 7ZEMs „i. No. cEa i F-1 Municipality of Anchorage I � ONSITE WATER &WASTEWATER PROGRAM CHANGE ORDER PERMIT # SW o9oiefs PID ops-ag� Sv SUED Eom l Creek TRACT BLOCK LOT a MOM 11 illlll� PLEASE GIVE A DESCRIPTION OF THE CHANGE CUSTOMER SIGNA 4191 LWA On -Site Reviewer Comments Issued (date) Review Time (hours) Urevndl/Q IJD"cticllrlad.��� ' ; I ��� 10 ry a9 v.S APPROVED (date) TOTAL HOURS HOURLY RATE 5130 'e TOTAL TO BE PAID 0 DATE PAZD �G ` RECEIPT # ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 FAX MEMORANDUM DATE: October 12, 2009 TO: Jay Crewdson, P.E. FROM: Mike Anderson, P.E. SUBJECT: Lot 2, Forest Creek Subdivion Well and Septic System Permit No. SWO90195 The house proposed for Lot 2 has been relocated further east requiring a new location for the septic system. The lot has been regraded and a new test hole has been placed at the location shown on the Site Plan. Soils in the new test hole are identical to those located throughout the subdivision and are composed of fine clean sand with a percolation rate under 5 minutes per inch. The revised location of the well, septic tank, primary and alternate absorption trenches are shown on the revised Site Plan. The ground slope at the site of the new absorption trench is much shallower due to the regarading of the lot and more conducive to construction of the new trench. The new location is shown on the attached drawings and does not conflict with wells in the area. Please modify the permit to allow placement of the new well, septic tank and absorption trench at the revised location. AIDERSONa_NGIVEE_RING P.O. BOX-240773; - ANCHORAGE, AK 99524 ..622-7773 617-7766(FAM September 24, 2009 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Subject: Lot 2, Forest Creek Subdivision Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of Lot 2, Forest Creek Subdivision intends to construct a new four-bedroom home on the lot. We are therefore requesting a permit be issued for the construction of a new septic system and well 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 and septic systems on surrounding lots. No conflicts exist between the proposed well and septic system and wells or septic systems on adjacent lots. 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 holes were placed on the lot in the area of the absorption trench and alternate site during the subdivision phase. The logs indicate poorly graded sand with silt (SP/SW) to depths of 20'. The percolation rate of the soil was determined to be between 1 and 5 minutes per inch. No groundwater was found during the placement of the test holes 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 1,250 -gallon septic tank and a 36' long by 3' wide by 7' 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 4' below the surface and the total depth will be 11'. 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 northwest. The new trench will be constructed parallel with the slope as much as possible in conformance with Municipal requirements. The new septic system will be constructed a Lot 2, Forest Creek Subdivision September 24, 2009 Page Two minimum of 1 00'from all wells and any surface water and 10' the proposed and existing water services in the area. The system will be constructed outside the Class B Wetland Boundary shown on the Site Plan. 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, 1r� Michael E. Anderson, P.E. Attachments �i i.%. •••� fE-^,. .......... .;��i TRACT A (VACANT) 1 LOT 3 LOT 4 LOT 5 r ` -------\r'--,`i LOT 6 .' �----- ��\ =- LOT 1 -- --- `\ I C-1 IC/3 I i I I / i i •�. AREA MAP -p:..................... :- I^ i MIQMEL E NIDERSON : � SCALE 1' = 100' a .00'Kl Iv�LC,HODO N n 'N53 3 i '1 AL ------------------------------ x ___________________________x AS S n F I$ P I 11111 n• b I I ��I I I O 8 "9 §� z C) •® l J N V+ W N o I a 1' c W -I Z w OJ H _l �i i H U F-1 LLJ o J a W • 9i 1 '� \ F l5 t • avow ano _ LOT 2, FOREST CREEK SUBDIVISION DESIGN FACTORS: SYSTEM REQUIREMENTS: Four Bedroom Home Deep Trench System Perc. Rate: 1.2 Min./Inch 1,250 Galton Septic Tank Application Rate: 1.2 GPD/SF 7' Drainfield Rock 4 Bedrooms X 150 GPD/1.2 GPD/SF (Application Rate) = 500 SF Absorption Area 500 SF/14 SF/ LF = 35.7 LF Trench Length THEREFORE: Construct a 36' Long x 3' Wide x T Effective Depth Absorption Trench at the Location Shown. Flow Line Elevation in Trench to be 4' Below Original Ground Surface. Total Depth to be 11' Below Existing Ground. Provide 4' Cover Over Septic Tank and 3' Cover Over Absorption Trench. Maintain 100' Separation from Wells in the Area. NOTE: 3'6" 7'0" (NO Natural Backfill Geotextile Fabric 4" Perforated PVC (Holes Down) Drainfield Rock 3' TRENCH SECTIOP' 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 WaterorStreams. MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT 4700 BRAGAW STREET ANCHORAGE, AK 99519-6650 SOILS LOG - PERCOLATION TEST LEGAL DESCRIPTION: LOT 2, FOREST CREEK SUBDIVISION PERFORMED FOR: THE DITTRICH COMPANY DATE: 10/9/09 PROJECT No.: PARCEL IDX: TECHNICIAN: M. ANDERSON DE:PT11 TEST HOLE I0A (cat) 1 2 3 4 ,.,• 5 6 d. 7 8 .• 9 10 11 i•• ' 12- 13]'. 2 13 14 15 •.w OB/OG POORLY GRADED SAND SP SILT LENSES BOH @ 20' SITE PAN SEE SITE PLAN y i WAS GROUND WATER ENCOLWTERED? No IF YES @ WHAT DEPTIll DEPTH OF WATER AFTER MONITORING: NONE VARIES DATE OF MONRORING: 10,12,0U DATE READING G1�OSS TIME (MINUTES) NET TIME (MINUTES) D(INCHES) EPTH To WATER N�T DROP (INCHES) TEST HOLE PRESOAKED PRIOR TO TESTING: 10/10 I 9:11/9:21 10 1.25"/6.75" 5.50" 2 9:22/9:32 10 1.13"/6.38" 5.25" 3 9:33/9:43 10 1.25"/6.63" 5.38" 4 9:44/9:54 10 1.38"/6.75" 5.38" 5 9:55/10:05 10 1.25"/6.50" 5.25" 6 10:06/10:16 1 10 1 1.13"/6.38" 5.25" PERCOLATION RATE' 1.9 (MIN/INCH) PERC. HOLE DIA 8. " (INCHES) TEST RUN BETWEEN FT. and 6 FT. COMMENTS: TEST HOLE PRE SOAKED PRIOR TO TEST. SOILS ARE THE SAME AS ENCOUNTERED IN TEST HOLE N0. 10. 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: 10/10/09 MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT 4700 SOUTH BRAGAW STREET ANCHORAGE, ALASKA 99519-6650 SOILS LOG - PERCOLATION TEST PERFORMED FOR: Jamie Dittrich DATE PERFORMED: 2/92004 LEGAL DESCRIPTION: —Proposed Lot 2. Dittrich Subdivision j��-�7T-��� TEST HOLE # 9 SLOPE SITE PLAN 111111111 OG/OL 1 2 3 4 5 6 7 8. 9. 10- 11- 13 0 14 IE 17 ° d 0 SP/SM Poorly Graded to Silty Sand Olive a 14 y WAS GROUNDWATER ENCOUNTERED? No S L ' IF YES, WHAT DEPTH? 0 Sloughing @9' DEPTH OF WATER None P • AFTER MONITORING: E v DATE: 2/242004 s- rs zvoy .a ° f r'. 49th SEE SITE PLAN FOR TEST HOLE LOCATION Varies PERC RATE: 1.1' MIN./INCH PERC. HOLE DIAMETER:8* TEST RLN BETWEEN -5FT: AND 8 T. COMMENTS: Test Hole Pre Soaked Prior to Test TEST PERFORMED BY: ALAN HARALA 1, MICHAEL E. ANDERSON, CERTIFY.THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALLSTATE AND MUNICIPAL GUIDELINES ON THIS DATE: 2/242004 MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT 4700 SOUTH BRAGAW STREET ANCHORAGE, ALASKA 99519-6650 SOILS LOG - PERCOLATION TEST PERFORMED FOR: Jamie Dittrich DATE PERFORMED: 2/9/2004 LEGAL DESCRIPTION: Proposed Lot 2. Dittrich Subdivision TEST HOLE # 10 SLOPE SITE PLAN IIIIIIIII OGOL I . I 5 a 6 7 a a SP/SM Poody Graded to Silty Sand Olive WAS GROUNDWATER ENCOUNTERED? No r4 y N 10J. IF YES, WHAT DEPTH? Sloughing @13.5 DEPTH OF WATER None AFTER MONITORING: 1DATE: 2/24/2004 5 rS ZdoSf 14 iPrr'i o-1 15 d A S M4lMEl EAND roaN r . ��`��, !t No. Cease, 17 A W44a..��••' BOH @ 20' S L P E SEE SITE PLAN FOR TEST HOLE LOCATION Varies PERC RATE:1_1 MINJINCH PERC. HOLE DIAMETER: 8_ TEST RUN BETWEEN. 5 FT. AND 6 T. COMMENTS: Test Hole Pre Soaked Prior to Test TEST PERFORMED BY: ALAN HARALA I, MICHAEL E" ANDERSON, CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES ON THIS DATE' 2/24/2004 ON-SITE WASTEWATER DISPOSAL SYSTEM CONSTRUCTION AND MATERIAL SPECIFICATIONS SUBJECT: LOT 2, FOREST CREEK SUBDIVISION GENERAL: 1. The scope of this project includes the procurement and placement of a new 1,250 -gallon septic tank at the location shown on the Site Plan. Work also includes the construction of a new 36' long X 3' wide X 7' effective depth absorption trench at the location also shown on the Site Plan. The distribution line in the trench will be placed at 4' below the existing ground surface. Total depth of the trench will be 11' below the existing ground surface. The new absorption trench and septic tank must be placed a minimum of 100' from all private wells and any surface water in the area and 10' from the water service line proposed for the lot. A minimum of 3' of cover is required over the absorption trench and 4' of cover over the septic tank. 2. Construction shall be in accordance with the approved site plan, design drawings, Municipal Permit with any special provisions or conditions, and all applicable State and Municipal Wastewater Disposal Regulations. 3. The Contractor shall be responsible for obtaining all underground utility locates and for the layout of the septic system and verification of the location of all lot lines. The Contractor must also verify the location of wells in the area and assure that the separation distances are met. 4. Unless specifically agreed otherwise, the contractor shall be responsible for final grading areas subsequently depressed from soil settling. Property owner shall be responsible for revegetation of affected areas unless specifically agreed otherwise. 5. Contractors installing wastewater disposal Municipal Department of Building Safety Program for system installations. Owners receive prior approval from the On -Site before beginning system installation. SEPTIC TANK INSTALLATION systems must be certified by the On -Site Water and Wastewater installing their own systems must Water and Wastewater Program A new 1,250 -gallon septic tank must be procured from an approved source and installed at the location shown. 2. A septic tank is to be constructed by a certified septic tank manufacturer. Construction shall include two 4" cleanouts for pumping access. Lot 2, Forest Creek September 24, 2009 Page 2 of 3 3. The septic tank shall be sufficiently bedded to prevent settling or shifting of the tank. 4. All standpipes on the septic tank shall extend a minimum of 12 inches above final grade. 5. Tanks installed without 4' of cover shall have a minimum of 2" of direct burial insulation. 6. A foundation cleanout shall be installed one to four feet from the building foundation. Two cleanouts are required between the tank and the drainfield. 7. Final grading over the tank shall be such that a positive slope exists away from the septic tank. DRAINFIELD CONSTRUCTION: 1. The drainfield shall be constructed to the dimensions shown on the design. The bottom of the trench shall be within 2" of level. 2. Distribution piping must be placed level with perforations down atop a level bed of drainfield rock. Rock should then be placed over the pipe to provide a minimum of 2" of cover. A silt barrier or geotextile fabric must be placed between the drainfield rock and the natural soil backfill. 4. Monitor tubes must be 4" in diameter and installed at the locations shown on the design. The portion below the distribution line must be perforated. 5. Contractor shall verify the septic tank and drainfield area minimum 100' away from any private water wells in the area, 150' from a Class "C" Well or 200' from any community well. 6. Direct bury insulation must be placed over the distribution system if less than 3' of backfill depth is available. Finish grade over the trench must be mounded to prevent settlement or depressions. 7. Grade area surrounding the absorption trench to drain away. 8. A minimum 2' of accepting soil is required below the drainfield rock for a 5' wide trench. Contractor shall verify this condition prior to placement of the rock. All pockets of unacceptable materials must be removed and replaced. Lot 2, Forest Creek September 24, 2009 Page 3 of 3 MATERIAL SPECIFICATIONS: 1. Septic tanks must be constructed by a municipally approved septic tank manufacturer. 2. The following pipe materials are approved for use in septic system installations in the Municipality of Anchorage: Cast Iron (perforated and solid), ASTM D3034 or P.V.C. (perforated and solid), ASTM F810 or H.D.P.E. (perforated, but not solid) and ASTM D2662 or A.B.S. (perforated and solid). 3. Insulation shall be at least 2" thick extruded direct burial polystyrene (Dow Chemical Co. Styrofoam HI or equal). 4. Septic tank inlets and outlets shall be fitted with watertight couplings (Caulder, Fernco, or equal). 5. A permeable geotextile fabric (Typar, Mirafi or equal) must be installed between the final drain rock layer and the native soil layer. 6. All drain rock shall be .5" to 2.5 in diameter with less than 3% passing the #200 sieve. INSPECTIONS: Municipal Ordinance requires a minimum of two inspections. These inspections must be conducted under the supervision of a professional engineer registered in the State of Alaska. The first inspection must be conducted after the excavation of trenches, beds or pits and before the installation of any gravel. A septic tank may be set in place, but may not be backfilled. The second inspection must be conducted after the placement of the geotextile fabric, gravel, distribution piping, standpipes, cleanouts and insulation. No backfill should be in place at the time of inspection. Contractor shall provide a copy of all field survey layout and construction notes for use in preparing the certified as -built of the completed system. Parcel I.D. q.� Y�z I i1t, � C' � (Lil Municipality of Anchorage Development Services Department j Building Safety Division On -Site Water and Wastewater Program 4700 Elmore Road P.O. Box 196650 Anchorage, AK 99507 www.muni.org/onsfe (907) 343-7904 CERTIFICATE OF ON-SITE SYSTEMS APPROVAL FOR A SINGLE FAMILY DWELLING 015-292-50 1. GENERAL INFORMATION Complete legal description Lot $ Forest creek subdivision COSA #_/ (; 17 D S S Expiration Date: 0 Location (site address) 10103 Our Road Anchorage, AK 99516 Current Property owner(s) Northam Horne Builders Day phone 630-2052 Mailing address 5725 Yukon Charlie Loop Anchorage, AK 99502 Lending agency Day phone Mailing address Real Estate Agent Day phone Mailing Address Unless otherwise requested, COSA will be held by DSD for pickup. 2. NUMBER OF BEDROOMS: Four (4) 3. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: Individual Well Individual On-site 0 Individual Water Storage ❑ Individual Holding Tank ❑ Community Class Well ❑ Community On-site ❑ Public Water System ❑ Public Sewer ❑ The Municipality of Anchorage Development Services Department (DSD) Issues Certificates of Onsite Systems Approval (COSA) based only upon the representations given in paragraph 4 by an independent professional civil engineer registered in the State of Alaska. Certificates of Onsite Systems Approval are required for the transfer of title (except between spouses) for properties served by a single-family on-site wastewater disposal and/or water supply system. DSD also issues COSAs upon request to homeowners. Certificates of Onsite Systems Approval are valid for 90 days from the date of issue for properties served by a private or Class C well and may be reissued with new water sample results. (Certificates may be reissued for a period of up to one year with valid water samples.) Certificates are valid for one year for properties served by Class A or B wells or a public water system. The Municipality of Anchorage is not responsible for errors or omissions in the professional engineers work. 4. 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 Onsite 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 Anderson Engineering Phone 522-7"3 Address P.O. Box 240773 Anchorage, AK 99524 Engineer's Printed Name Michael E. Anderson, P.E. Date 4109!4070 -OF .4 Ill 6. DSD SIGNATURE'I :AA1°� L ANDEUOW %" ✓• CE -4381 .%.` Approved for bedrooms. �I NS40•.• Sr - n ;.• +��� Disapproved. Conditional approval for bedrooms, with the following stipulations: ,.....0. 1 y GHQ ..,•,."y ONSITE '. WaTER—; m- PROGRAM ;• "uini7ht17,. Attachments: COSA Checklist X Arsenic Advisory Septic System Advisory Maintenance Agreements Well Flow Advisory Supplemental Engineer's Report Nitrate Advisory Other Original Certificate Date: a (R.,, „A)5) Municipality of Anchorage ' Development Services Department Building Safety Division On -Site Water & Wastewater Program ' 4700 Bragaw Street P.O. Box 196650 Anchorage, AK 99519-6650 www.muni.org/onsite (907) 343-7904 CERTIFICATE OF ON-SITE SYSTEMS APPROVAL CHECKLIST Legal Description: Lot 2. Forest creek Subdivision Parcel ID: 015.292.50 A. WELL DATA Well type Private If A, B, or C provide PWSID # _ Well Log (YM) Y Date completed 9/30109 Sanitary seat (Y/N) Y Wires property protected (YM) Y Total depth 101 ft. Cased to 101 ft. Casing height (above ground) >24 in. FROM WELL LOG AT INSPECTION Date of test 9/30/09 Static water level 55 fl. ft. Well production 10 g,p•m, 9 - p.m -WATER SAMPLE RESULTS: Coliform 0 colonies/100 mL Nitrate 3.55 mgt Other bacteria 0 colonies/100 mL Arsenic: ND mg/I Date of sample: 3rn110 Collected by: a Haraia S. SEPTICIHOLDING TANK DATA Tank Type/Material SeptictSteet Date installed 1211012009 Tank size 1.250 gal. Number of Compartments Two Cleanouts (YM) Y Foundation cleanout (Y/N) Y Depression over tank (Y/N) N High water alarm (YM) N Date of pumping New construction Pumper C. ABSORPTION FIELD DATA Date Installed 12110109 Soil rating (g.p.d./ft2 or 0bdnn)1.2 GPDrsF System type 5 Wide Trench Length 50 ft Width 5 ft. Gravel below pipe 4 ft. Total depth 9 fL Eff. absorption area 500 fe Monftoring tube Y Depression over field N Date of adequacy test New const. Results (Pass/Fall) A For_ bedrooms Fluid depth in absorption field before test in. Water added gat. New depth In. Elapsed Time: min. Final fluid depth In. Absorption rate >= g.p.d. Any rejuvenation treatment (past 12 mo.) (Y/N & type) N If yes, give date D. LIFT STATION Date Installed Size in gallons Manhole,/Access(YIN) 'Pump on' level at_ in. 'Pump off" level at_ in. High water alar level at In. Datum Cycles tested Meets alarm 8 circuit requirements? E. SEPARATION DISTANCES SEPARATION DISTANCES FROM WELL ON LOT TO: Septic tank/lift station on lot >100' On adjacent lots »oo, Absorption field on lot >100' On adjacent lots >100' Public sewer main NIA Public sewer manhole/cleanout NIA Sewer /septic service line >25' Holding tank NSA Animal containment areas None Manure/animal excrete storage areas None SEPARATION DISTANCES FROM SEPTIC/HOLDING TANK ON LOT TO: Building foundation >5' Property line>s Absorption field >5' Water main >70 Water service line >to' Surface water Wells on adjacent lots >too' SEPARATION DISTANCE FROM ABSORPTION FIELD ON LOT TO: Property line e" Building foundation >to' Water main >to' Water Service line >t0' Surface water >io0' Driveway, parking/vehicle storage >2S Curtain drain None Noted Wells on adjacent lots >700 F. COMMENTS: See Lot Une Walver. G. ENGINEER'S CERTIFICATION - �P�' U ��C:9s��� Aw '� 1 l certify that t have determined through field inspections and 1, '49m j review of Municipal records that the above systems are in 00 * �»..i».....«. conformance with MOA COSA guidelines in effect on this date.a» Michael E. Anderson. P.E. �I - �'1eL & ANoemo.r ' Engineer s Printed Name / sem•, CE -4381 �: �. Date aosnolo �y� COSA Fee S Y 7 D Date of Payment i ' -/0 Receipt Number (Rev. 11105) - Waiver Fee $ 2 cc) Date of Payment J " Receipt Number O 1 0 7�2- G D 0 Fri CA v ON m z Z93 Z m SC1p0 i z z � fn y clsigz i0 zS��o m V9 St o� OUR ROAD W Q v N 00.08'32"W 134.00' 0 m 0-0 v ; •. q 8r-mz oO 09. N C) Cw OUR ROAD W Q v N 00.08'32"W 134.00' 0 m 0-0 8r-mz oO N C) Cw C V I Z