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HomeMy WebLinkAboutSAMPSON ESTATES BLK 3 LT 16Onsite File ,w t 'Y. 11914' drainfield n Y �' ,r: Sarnpson Estates Block 3 Lot 16 #051 �81 1 �42 Municipality of Anchorage Development Services Department Building Safety Division On -Site Water and Wastewater Program. 4700 Bragaw St. P.O. Box 196650 Anchorage. AK 99519-6650 Page of www ci.anchorage.akus (907) 343-7go4 ON-SITE WASTEWATER DISPOSAL SYSTEM AND/OR WELL INSPECTIONREPORT Permit Number. SWO70213 PID Number OSM11-42 Wiliam Dougherty Wastewater System: 0 New Upgrade Ad� 22435 Sampson Drive Anchorage, AK99567 — ABSORPTION FIELD 688-6206 N� of 8.&� 4 OD"I)TliiiiCtl 111W�Twcl 13BW cililmic, LEGAL DESCRIPTION Iscil R.Wq TitutiCapittima� .6 7 el� 3 LA: 16 Sampson Estates DWM 0 Me wWW Wiictr oiwii o"in P" 3 Ft. 4 Ft Tmrwvp RwW G� LWVM 1-3 100 Fl. Well: El New El Upgrade 'i'"v C9 ii� '"2 D��� 5 >10 Ft C� (Pnvow & a. c) Existing T" DWM I C� W T" M. -Mm � fte M� Ft. Ft. 1.000 Fe ASTM D3034 PVC Dift lr� FIL Barr Excavating 8125 to 9/5/2007 ft""" SM a C�VH FLI FL TANK SEPARATION DISTANCES 0 Septic 0 Holding [I S.T.E.P. [I Other. TO �� Septe Absorption Uft Holding lublic/lInvitits M --i— ,,,,r?=ty Froir, Tank Fwld Station Tank S�r Lin, A chorage Tank i�250 GM wa >100' >100' NIA N/A >2V M� Steel TWO ls�wtitw >100' >1100' N/A WA LIFT STATION LM 1.0 �5- >I(r N/A NIA F� >10' NL/A N/A _ C� D� I None Noted Pwvm�&M� F 1� P� by lt� Existing Septic Tank Pumped. Crushed and Buried On Site. BENCH MARK � iiirii cieixrv� Diverter Valve Placed and Existing Absorptim Trench Bottom of Siding Connected. 100-00 F1 Inspections performed by: S. Gilbert Dates: I' =5/2007 U V 2ndam=07 A Development Services Department Approval 491" Conditional Approval Date: .... 01 ilf..Mc ... . . ... ICHAEL F ANM711rj Id CE -4331 Reviewed and approved by: t-XA Date: -s- /,r _Lih Municipality of Anchorage DEVEOPMENT SER\nCES DEPARTMENT 4700 Bragaw Street Anchorage, AK 99519-6655 - 343-7904 On -Site Wastewater Disposal System or Well Inspection Report Page 2 of 3 Permit No.: SVM70213 PID No. 051-8111412 Existing Septic Tcnk. Pumped. Crushed cnd Buried 3MMI-13UN LOT r-31tAir-3 11)unulvlz�IUIN 16, BLOCK 3 40.420 S.F. S\Pl 491h -#, -" � No CE�' PLAN AS -BUILT a —T. --A 444- SS10 SCALE 1'- 4(r %%%%SSW Municipality of Anchorage Page 3 of 3 DEVEOPMENT SERVICES DEPARTMENT 4700 South Bragaw Street Anchorage, AK 99519-6655 - 343-7904 On -Site Wastewater Disposal System or Well Inspection Report Permit Number. SW070213 PID No. 015-811-42 103.5 C14 C40 rn U) 00 2' InsuLation 498.3*8.1 1.250 Gallon Septic Tank 10 0.5 2" Insulation & L Geotextile Fabric 97.11 Drainfield Rock 97.1 93.1 93.1 86.9 50'Crrench Length) 10 0.1 2" Insulation & L reotextile Fabric 97.4 Drainfield Rock 97.1 93.0--/ 50'(rrench Length) 93.0 . ........... ..... .. 49 ... . ....... .. .... .. . ..... PROFILE AS -BUILT ...... ... . ...... .. .. ....... .. M No Scale LE % 0. toiler, MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICES DEPARTMENT 4700 BRAGAW STREET ANCHORAGE, AK 99519-6650 SOILS LOG - PERCOLATION TEST LEGAL DESCRIPTION: LOT 16. BLOCK 3, SAMPSON ESTATES SUBDIVISION PERFORMED FOR: WILLIAM DOUGHERTY DATE: 8/25/2007 PROJECT No.: PARCEL ID#: TECIINICIAN: S. GILBERT DrTn I TEST HOLE # I-] 0w) 1 2 // OB/OG SLOPE NET TIME I (MINUTES) 3 NET DROP I (INCHES) 8/1/07 -1 TEST HOLE PRESOAKED PRIOR TO TESTING: 4 8:33 4.25" SILTY GRAVEL 5 1 2 GM 30 6.50' GREEN/GRAY 6 3 9:04 4.38' 7 8 9:34 BOTTOM OF HOLE 9 2.13' 10 3 WAS GROUND WATER ENODUNTERED? 4.54 IF YES 0 Wl TAT DEPIT r DEM I OF WATER AFTER MONITORING: 10:05 30 DATE OF MONITORING:— I I I I I SITE PLAN SEE SITE PLAN ISEE SITE PLAN DATE READING G70SS TIME MINUTES) NET TIME I (MINUTES) DEPTH TO WATER I (INCHES) NET DROP I (INCHES) 8/1/07 -1 TEST HOLE PRESOAKED PRIOR TO TESTING: 1 8:33 4.25" 1 2 9:03 30 6.50' 2.250 3 9:04 4.38' 4 9:34 30 6.50' 2.13' 3 9:35 4.54 4 10:05 30 6.63- 2.13 - PERCOLATION RATE: 14 (MINANCH) PERCAIOLEDIA, 6 INCHES) TEST RUN BETWEEN: 4. 0 FT. and 5. 0 FT. COMMENTS: TEST HOLE PRE SOAKED PRIOR To TEST. PERC. TEST ONLY TO VERIFY SOILS. TEST PERFORMED BY ANDERSON ENGINEERING TECHNICIANS. 1, MICHAEL E. ANDERSON CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPLE GUIDELINES IN EFFECT ON THIS DATE: 9/26/2007 MUNICIPALITY OFANCHORAGE Development Services Department On -Site Water& Wastewater Program 4700 South Bragaw Street P.O. Box 196650, Anchorage, AK 99519-6650 (907) 343-7904 ON-SITE WASTEWATER DISPOSAL SYSTEM PERMIT Upgrade Permit Number: SW070213 Legal Description: SAMPSON ESTATES BLK 3 LT 16 Design Engineer: 0014 ANDERSON ENGINEERING Owner Name: WILLIAM & KIM GREEN Owner Address: 22435 SAMPSON DRIVE CHUGIAK. AK 99567 - p /-14 jq6D 116 Ita Date Issued: Aug 22, 2007 Expiration Date: Aug 21, 2008 Parcel ID: 051-811-42 Site Address: 022435 SAMPSON DR Lot Size: 40420 So. FT. Total Bedrooms: 4 Permit Bedrooms: 4 This permit Is for the construction of. M -e Disposal Field Z Septic Tank E3Holding Tank E] Privy El Private Well E] 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. THE ENGINEER NEEDS TO DO AN ADDITIONAL PERCOLATION TEST PRIOR TO CONSTRUCTION OF THE SEPTIC FIELD. THE PERCOLATION TEST PROCEDURE IS TO FOLLOW TABLE 3-8 OF THE EPA DESIGN MANUAL. 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. Received Issued By - Date: 'R' I 4�wcn Date: Z�07 /� I Municipality of Anchorage Development Services Department Building Safety Division On -Site Water and Wastewater Program 4700 Bragaw Street P.O. Box 196650 Anchorame Alaska 99519-6650 www muni.org/onsite (907) 343-7904 EF W n ON-SITE SEWER/WELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. 051-811-42 . If ;., S t 1 $05:�, �d Property owner(s) William and Kim Green ay phone 688-6206 Mailing address 22435 Sampson Drive Chugiak, AK 99567 Zip Code Site address 22435 Sampson Drive Chugiak. AK 99567 Zip Code Legal description (Sub'd., Block & Lot) Lot 16, Block 3, Sampson Estates Subdivision Legal description (rownship, Range & Section) Lot Size 40,420 ____Sq. Ft. THIS APPLICATION IS FOR (21 all that apply): Absorption Field El Septic Tank El Holding Tank El Privy Private Well Water Storage Number of Bedrooms Four (4) THIS APPLICATION IS AN: Initial 11 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. (f a44� (Signature of property owner or authorized agent) Permit/Rush Fees: q&0 f lq�r Waiver Fees: Date of Payment: /6 9� Date of Payment: Receipt Number. Receipt Number. (Rev. 11105) ANDERSON ENGINEERING P.O. BOX 240773 ANCHORAGE, AK 99524 522-7773 677-7766 (FAX) August 22, 2007 Municipality of Anchorage Development Services Department On -Site Water and Wastewater Program 4700 South Bragaw Street Anchorage, AK 99519-6650 Subject: Lot 16, Block 3, Sampson Estates Subdivision Septic System Design and Permit Application Impacts to Adjacent Properties Dear Onsite Services Engineer: The existing septic tank and absorption trench on Lot 16, Block 3, Sampson Estates Subdivision are in a state of failure and must be replaced. We are therefore requesting a permit be issued for the upgrade of the septic system to accommodate the four- bedroom home on the lot. The attached Site Plan and backup documentation identify the location and configuration of the upgrade to the proposed septic system. The existing septic tank will be pumped, uncovered, crushed and removed. A new 1,250 gallon septic tank will be placed at the same location as the existing tank. A flow diverter valve will be utilized to connect the existing absorption trench to the new system for future use. Also identified on the plans are the locations of the existing well. No conflicts exist between the existing septic system and the systems on adjacent lots. Drainage arrows are shown indicating the current drainage patterns. The drainage patterns will be maintained after construction. The test hole placed an the lot indicated silty gravel with some sand (GM). The application rate was determined to be .6 gallons per day per square foot. We are proposing to construct 2-50' long by 5' wide absorption trenches with 4' of gravel beneath the distribution pipe. The distribution pipe in the trench will be placed at 3' below the surface with the total depth at 7'. No groundwater was encountered during placement of the original test hole and none has been noted since. The ground surface on the lot slopes slightly to the north at grades approaching 5%. The trench will be constructed parallel to the contours of the ground as much as possible and in conformance with design criteria. A minimum of 10' will be maintained between all components of the septic system and the existing water service and 100' Lot 16, Block 3, Sampson Estates Subdivision August 22, 2007 Page Two from any surface water and wells in the area. If the system is constructed in accordance with our design the following statements apply: I 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 an 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, WW' --J' (f 04-4� Michael E. Anderson, P.E. Attachments \L57 49:� V �-A: � E. A%' JERS0% No C�-4-181 .12 13 10 PSON 15 20 21 ............ ..... ...... ........ .......... AREA MAP SCALEI*=IOU # . % No. CE"I . ............ s SAMPSON ESTATES SUBDIVISION LOT 16, BLOCK 3 40,420 S.F. Existing Well N, 2-4!�0-EHL:,.p,.. 5' de p Absorption Tre h" TH (D Four Bedroom Flow Spritter House Vat" NOTE: Pump. Crush Remove T, cnd It" Existing Septic Tcnk. Slipib9. nk Fl" Mortar vaive vow EGO OF 4 t ......... R WE A? C2 0, 49th * * * SO . .. ...... . Oi.......... . 6 .. ............... L ANDERS&T". --6 ,p% No. a4wi SITE PLAN ................ Istilt SS% N%lk SCALE 11"= 41Y LOT 16, BLOCK 3, SAMPSON ESTATES SUBDIVISION DESIGN FACTORS: SYSTEM REQUIREMENTS: Four Bedroom House 5'Wide Trench System Perc. Rate: 16-30 Min./inch 1,250 Gallon Septic Tank Application Rate: .6 GPD/SF 4'Drainfield Rock 4 Bedrooms X 150 GPD/.6 GPD/SF (Application Rate) = 1.000 SF Absorption Area 1.000 SF/5 SF/ LF -.5 (Red. Factor) = 100 LF Trench Length THEREFORE: Construct 2 Trenches Each 50'Long x 5'VVide x 4'Effective Depth. Flow Line to be 3' Below Existing Ground. Total Depth to be T Below Existing Ground. Place Diverter Valve and Connect Existing Absorption Trench. Place Splitter Valve to Provide Even Flow to Each New Trench. Provide Tof Cover Over Absorption Trenches and 4' Over Septic Tank. — Natural Backfill 2'6" Geotextile Fabric 6"" —4" Perforated PVC (Holes Down) 4-0-1 1 ,>---t— Drainfield Rock 5. TYPICAL 5'WIDE TRENCH SECTION w CF (NO SCALE) AA,�� ................... NOTE: Grade Area Over Trench to Drain Away. Minimum 6'Separabon From Bedrock. Minimum 4'Separation From Groundwater. Minimum 1 OO'Separation From Wells in the Area. Minimum 100' Separation From Surface Water or Streams.... No. CE�l MUNICIPALITY OF ANCHORAGE DEVELOPMENT SERVICEs DEPARTMENT 4700 BRAGAW STREET ANCHORAGE, AK 99519-6650 SOILS LOG - PERCOLATION TEST LEGAL DESCRIPTION: LOT 16, BLOCK 3, SAMPSON ESTATES SUBDIVISION PERFORMED FOR: WILLIAM DOUGHERTY DATE: 8/1/2007 PROJECT No.: PARCEL ID#: TECHMCIAN: S. GILBERT Drm I TEST HOLE #7] (11-0 2 .4 3 4 5 6 7 9 12- 4' A. I I I COMMENTS: [11111 SILTY GRAVEL GM GREEN/GRAY WAS GROUND WATER ENCOUNTERED' No IFYES@WILATDEFni'- DEPT1 I OF WATER AMR MONITORING: NONE DATE OF MONITORING: 8/150007 BOTTOM OF HOLE SITE PLAN SEE SITE PI -AN ISEE SITE PLM DATE READING G70SS TIME MINUTES) NET TIMEJ I (MINUTES) DIWEPTH To ATER (INCHES) NET DROP I (INCHES) 8/1/07 TEST HOLE PRESOAKED PRIOR TO TESTING: 1 4:04 29' 2 4:34 30 30.75" 1.75* 3 5:04 30 32.50* 1.750 4 5:34 30 34.250 1.750 PERCOLATION RATE: 17 (MIN/INCII) PERC. HOLE DIA. 6 INCHES) TEST RUN BETWEEN* 4. 0 FT. and 5 - 0 Fr. HOLE PRE SOAKED PRIOR To TEST. TEST PERFORMED BY ANDERSON ENGINEERING TECHNICIANS. 1, MICHAEL E. ANDERSON CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPLE GUIDELINES IN EFFECT ON THIS DATE: 8/21/2007 ON-SITE WASTEWATER DISPOSAL SYSTEM CONSTRUCTION AND MATERIAL SPECIFICATIONS SUBJECT: LOT 16, BLOCK 3, SAMPSON ESTATES SUBDIVISION GENERAL: The scope of this project includes the pumping, crushing and removal of the existing septic tank. It also includes the procurement and placement of a new 1,250 -gallon septic tank at the location shown on the Site Plan. Work also includes placement of a Flow Diverter Valve and the connection of the existing absorption trench into the new system. Work will then include the construction of 2 new absorption trenches each 50' long X 5' wide X 4.0' effective depth absorption trench at the location also shown on the Site Plan. The distribution line in the trenches will be placed at 3' below the existing. ground surface. Total depth of the trenches will be 7' below the existing ground surface. The new absorption trenches 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 on the lot. A minimum of 3' of cover is required over the absorption trench and 4' of cover over the septic tank. A flow splitter valve must be placed to insure even flow to each trench. 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 systems must be certified by the Municipal Department of Development Services, Building Safety Division for system installations. Owners installing their own systems must receive prior approval from the On -Site Water and Wastewater Program Section before beginning system installation. SEPTIC TANK INSTALLATION 1. A new 1,250 -gallon septic tank must be procured from an approved source and installed at the location shown. Lot 16, Block 3, Sampson Estates August 21, 2007 Page 2 of 3 2. A septic tank is to be constructed by a certified septic tank manufacturer. Construction shall include two 4" cleanouts for pumping access. 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. 3. 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 pipe must be perforated. 5. Contractor shall verify the septic tank and drainfield are a 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. Lot 16, Block 3, Sampson Estates August 21, 2007 Page 3 of 3 8. A minimum 2' of accepting soil is required below the drainfield rock for an absorption trench. All pockets of unacceptable materials must be removed and replaced. 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 Hl or equal). 4. Septic tank inlets and outlets shall be fitted with watertight couplings (Caulder, Femco, 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. 015-811-42 Municipality of Anchorage On -Site Water and Wastewater Program (907) 343-7904 Certificate of On -Site Systems Approval C 0' Expiration Date: r 10 —2j 1. GENERAL INFORMATION: 3 / Complete legal description SAMPSON ESTATES; BLOCK LOT Location (site address) 22435 Sampson Drive *Anchorage 99567 Current Property owner(s) Stephanie Hubbert Day phone 854-6188 Mailing address 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: 4 4. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: PF_ ® Individual Individual Water Storage 2 - ❑ Community Class Well S A E T Y ❑ Public Water System Expiration Date: r 10 —2j 1. GENERAL INFORMATION: 3 / Complete legal description SAMPSON ESTATES; BLOCK LOT Location (site address) 22435 Sampson Drive *Anchorage 99567 Current Property owner(s) Stephanie Hubbert Day phone 854-6188 Mailing address 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: 4 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: Received by: Date: COSA to be released to the engineer, unless otherwise requested by the engineer. COSA Fee $ 5 5 (D Waiver Fee $ Date of Payment % 0, 1'O� Date of Payment Receipt Number a99 5 �76 Receipt Number COSA # 0 S CoZ2 1 3 6 Waiver # ffr 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: Garness Engineering Group Ltd (GEG) Phone: 907-337-6179 Address: _ 3701 East Tudor Road Suite 101- Anchorage Alaska 99507 Engineer's Printed Name: Jeffrey A. Garness Date: `? 22 - In conducting this evaluation, GEG provided an engineering evaluation of the well and/or septic system in accordance with the guidelines and regulations established by the Municipality of Anchorage and industry practices. The reported results describe the condition of the system/s on the dates of the evaluation. Separation distances were measured to readily identifiable features. Hidden defects or encroachments may exist that were not identified during the evaluation. The operational life of all wells and septic systems depend upon a variety of variables, including but not limited to, soil conditions, groundwater levels (that may fluctuate during the year), quality of construction (materials and workmanship), and the water usage of the family utilizing the system/s. These conditions can vary, and are outside the control of GEG. Satisfactory test results do not guarantee future perfonnance of the system/s; therefore, GEG makes no warranty (express or implied) regarding the future performance of the well or septic system. GEG makes no representation whether an alternative well or septic system can be installed on the property in the event either of the current systems fail to perform adequately in the future. The content of this report is for the sole benefit of the person/party that retained GEG to perform the evaluation. Reliance upon the information provided in this report by any other person or party (including subsequent property purchasers) is not authorized, nor will it confer any legal right whatsoever. 6. 7IGNATURE System #1 Approved for bedrooms System #2 Approved for Disapproved Conditional approval for bedrooms bedrooms, with the following jJ�f � '�GCr•:e. s .. crzss,ow #AECC884 6\?NLITY p�.�/iii �ti�Tila ioi� rFR iTF y� < qS.T,. 4ND m �o ROS FR = j99I Original Certificate Date: 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 Nitrate Advisory_ Septic System Advisory Arsenic Advisory Well Flow Advisory Other Legal Description: SAMPSON ESTATES; BLOCK 16, LOT 3 Parcel ID: 015-811-42 If more than 1 septic system on lot: COSA Checklist # of Structure served by this system _ A. WELL DATA N ❑ Well log is filed with Onsite (or attached) v Date drilled 1112184 o� Total depth 160 ft Total measured depth from grade 7.5 ft (max) Cased to 160 ft 0 ❑ Sanitary seal is functioning correctly Water added 650 gal ❑ Wires are properly protected ❑ N/A — pressurized field Casing height (above ground) 12+ in. Date of flow test for COSA 7/13/22 New depth in p 120 Static water level at beginning of test 150.3 ft Comments B. TANK DATA Age of tank(s) 15 years Tank type/material '_"P4TT E' Measured operating fluid level in septic tank ❑ Standpipes/foundation cleanout per record drawing Date of pumping I D1 q /21 D. ABSORPTION FIELD DATA Well production at time of test 5.3+ gpm Water storage tank volume N/A gallons Well disinfected for coliform test? ❑ Yes On Nc [,Coliform bacteria is Negative . , Nitrate 5, 2z mg/L ❑ Nitrate less than MRL (ND) Arsenic ug/L R Arsenic less than MRL (ND) Collected by GEG, LTD. Date of Sample 7/13/22 C. LIFT STATION ❑ Required maintenance completed Age of lift station ye Lift station material t0 Which system tested (date installed) 8/29/07 Adequacy test date 7/13122 v On ALL standpipes present per record drawing Results R' Pass For 4 bedrooms z a Total measured depth from grade 7.5 ft (max) Fluid depth prior to test 11 in 0 Measured depth to pipe invert from grade *2.17 ft (min) Water added 650 gal N v ❑ N/A — pressurized field 22 ❑ Monitor tubes go to bottom of effective. If not, state New depth in p 120 depth into effective Elapsed time min ❑ Code -required soil cover over field Final fluid depth 18 in ❑ System presoaked Absorption rate 600+ gpd (Required if vacant for greater than 30 days prior to Any rejuvenation treatment (past 12 months) NIA date of test) Gallons introduced N/A gallons If yes, enter date ' Comments/Deficiencies: 2007 DUAL TRENCH HAS 2 INCHES OF INSULATION -SEE EMAIL FROM OWNER REGARDING NO FREEZING ISSUES -TESTED SOUTH 2007 TRENCH ONLY. SOUTH TRENCH WAS DRY UPON ARRIVAL AND STAYED DRY THROUGHOUT TEST COSA Checklist yellow sheet 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' Community Sewer Manhole/Cleanout > 100' Q Yes if No ft I- Yes if No ft Neighboring Tank > 100' 0 Yes if No ft Private Sewer/Septic Line > 25' 0 Yes if No ft Absorption Field on Lot > 100'[M✓ Yes if No ft Holding Tank > 100' Q✓ Yes if No ft Neighboring Absorption Fields > 100' Animal Containment > 50' Yes if No ft M Yes if No ft Manure/Animal Excreta Storage > 100' Community Sewer Main > 75' Q✓ Yes if No ft Q Yes if No ft From Septic/Holding Tank on Lot to: (Please enter distances if less than required) Building Foundations > 10' ❑ Yes if No ft Surface Water > 100' Yes if No ft Property Line > 5' P,1 Yes if No ft Wells on Adjacent Lots: Absorption Field > 5' Q Yes if No ft Private Wells > 100' ❑✓ Yes if No ft Water Main > 10' 0 Yes if No ft Community Wells > 200' 0 Yes if No ft Water Service Line > 10' n 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' 0 Yes if No ft If absorption field is under driveway comment below Property Line > 10' 0 Yes if No ft Wells on Adjacent Lots: Water Main > 10' 0 Yes if No ft Private Wells > 100' Q Yes if No * ft Water Service Line > 10' R] Yes if No ft Community Wells > 200' 21 Yes if No ft Surface Water > 100' E Yes if No ft F. ENGINEER'S COMMENTS *DISTANCE FROM WELL ON SAMPSON ESTATES; B4, L21 TO 1984 RESERVE TRENCH IS UNABLE TO BE VERIFIED BECAUSE NO CLEANOUTS AND MTS ARE PRESENT. **TANK TO BUILDING FOUNDATION IS 5'+ & MET CODE AT TIME OF INSTALLATION ***ASSUMED - MEASUREMENT IS FOR 2007 TRENCH. LOCATION OF 1984 TRENCH WAS NOT VERIFIED - SUMP WAS DRY & NO INVERT MEASURED. G. ENGINEER'S CERTIFICATION I certify that i 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 Je fre A. Garness Q° C 79 pr o f e s sio�°Q� #AECC884 DEVELOPMENT SERVICES DEPARTMENT On -Site water and wastewater Section www.muni.org/onsite Nitrate Advisory Certificate of On -Site Systems Approval # OSC 221386 Subdivision: Sampson Estates Block 3 Lot 16 907-343-7904 Fax: 343-7997 A water sample revealed a nitrate concentration of 5.22 milligrams per liter (mg/L). The Environmental Protection Agency (EPA) has established a maximum contaminant level (MCL) of 10.0 mg/L for public drinking water systems. While private wells are not subject to this regulation, EPA standards are based on existing health information and can therefore be used to gauge the relative quality of water from private wells. Please see the attached "Nitrate Fact Sheet" for important information regarding nitrate. This advisory must be attached to all copies of the subject Certificate of On -Site Systems Approval. Mailirig Address P O Box 196650 *Anchorage; Alaska 99519 6650 *www muni org From Northern Testing Laboratories, Inc. Nitrate is a negatively charged compound of nitrogen and oxygen, which is very soluble in water. Nitrate is not readily filtered or otherwise removed in the soil and can pass rapidly into ground water wells. SOURCE: Nitrate is a major component of fertilizer and wastewater. Often the nitrate is in the form of ammonia or protein first, which through contact with oxygen and certain bacteria, converts to the oxidized form known as nitrate. Sources of nitrate from wastewater include urea, ammonia cleaners, food solids, and bacterial cells. It may also result from the breakdown of organic matter buried in the soil. TOXICITY: Nitrate is generally not toxic to adults or children over the age of two or three years but is associated with a potentially fatal infant disease called methemoglobinemia. In the digestive system of young children, nitrate converts to nitrite, which can pass through the intestinal wall into the blood stream. There it combines with the hemoglobin and interferes with the ability of the blood to carry oxygen. For this reason, methemoglobinemia is referred to as "blue baby" disease. The EPA limits the concentration of nitrate in public drinking water supplies to 10 mg/L. The standard has been lowered from a previous level of 45 mg/L set by the US Public Health Service and the World Health Organization. TREATMENT: due to its solubility in water and negative ionic charge, filtration and other common home water treatment systems such as softening, or iron filtration does not readily remove nitrate. The best method for limiting nitrate in well water is source control. This can include avoiding overdosing of fertilizer near the well and maintaining good separation distances between septic tank leach fields and the well. A special anion exchange filter that contains a media with a strong affinity for negatively charged ions in water, or by a reverse osmosis treatment system or distillation can remove nitrate. TESTING: Nitrate analysis is usually done by one of the several "wet chemical" methods using a spectrophotometer to read the final color endpoint. Specific ion electrodes also can be used to detect the activity of nitrate in water. This laboratory uses several different wet chemical methods approved under the public water supply laboratory certification program. They also have test kits available, which the laboratory uses to perform an inexpensive "screening test", and with which the homeowner can monitor the change in nitrate levels from their well. They recommend comparing the test kit results against a certified analysis from the lab occasionally to verify the accuracy of the kit. We recommend using a specially prepared bottle that has been rinsed in hydrochloric acid for collecting samples. Mailing Address P O Box 196650 *Anchorage, Alaska 99519 6650 *www muni org Sonja Blewett From: Abe Hubbert <Abe.Hubbert@technipfmc.com> Sent: Thursday, July 21, 2022 9:49 AM To: Sonja Blewett Cc: Stephanie Hubbert; Heidi's Homes of Alaska Subject: 22435 Sampson Dr drain field statement Good morning Sonja, We have experienced no issues what so ever with the leach field at our property (22435 Sampson Dr. Chugiak, Ak 99567) freezing, backing up or working incorrectly. During the purchase of this property in 2019 we were also told the previous buyers experienced no issues with the leach field as well. Please let me know if you have any other questions. Thanks Abe Hubbert Operations Manager ( Surface Americas P +1 907 563 3990 M +1 907 538 4892 abe.hubbert(cDtechnipfmc.com TechnipFMC 700 IN International Airport Rd. Bldg A-1 Anchorage, Alaska 1 99518 TechnipFMC.com 1 • Municipality ®f Anchorage On -Site Water and Wastewater Program (907)343-7904 Certificate of On -Site Systems Approval 0SI Parcel I.D. 811-42 1. GENERAL INFORMATION: Snvery Expiration Date: 3 r 0 Complete legal description SAMPSON ESTATES: BLOCK 3, LOT 16 Location (site address) 22435 SAMPSON DRIVE *CHUGIAK AK 99567 Current Property owner(s) WILLIAM & ETHEL DOUGHERTY Day phone 887-1607 Mailing address 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 4. TYPE OF WATER SUPPLY: TYPE OF WASTEWATER DISPOSAL: Individual Well ® Individual 19 Individual Water Storage ❑ Holding Tank ❑ Community Class Well ❑ Community ❑ Public Water System ❑ Public Sewer ❑ WaiverNariance request for: Distance: Received by: Date: COSA to be released to the engineer, unless otherwise requested by the engineer. COSA Fee $ 5-6-6 Date of Payment 4 1t11/9 Receipt Number t �qA-Ra" COSA # DSC l9 /a3(_1 Waiver Fee $ Date of Payment Receipt Number 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: Garness Engineering Group, Ltd (GEG) Phone: 907-337-6179 Address: 3701 East Tudor Road Suite 101- Anchorage, Alaska 99507 I Engineer's Printed Name: Jeffrey A. Garness Date:--"iq/f In conducting this evaluation, GEG provided an engineering evaluation of the well and/or septic system a in accordance with the guidelines and regulations established by the. Municipality of Anchorage and industry practices. The reported results describe the condition of the system/s on the date/s of the Q4 P t l evaluation. Separation distances were measured to readily identifiable features. Hidden defects or I H 7.encroachments may exist that were not identified during the evaluation. The operational life of all wells /� *' t 4 and septic systems depend upon a variety of variables, including but not limited to, soil conditions,"' groundwater levels (that may fluctuate during the year), quality of construction (materials and workmanship), and the water usage of the family utilizing the system/s. These conditions can vary, and I....., i. j ' are outside the control of GEG. Satisfactory test results do not guarantee future performance of the (I `- ��J e . ey Ce ess.: system/s; therefore, GEG makes no warranty (express or implied) regarding the future performance of PQ ' CE 79 3 i the well or septic system. GEG makes no representation whether an alternative well or septic system can be installed on the property in the event either of the current systems fail to perform adequately in f �lir' the future. The content of this report is for the sole benefit of the person/party that retained GEG to �o�esslo� o perform the evaluation. Reliance upon the information provided in this report by any other person or party (including subsequent property purchasers) is not authorized, nor will it confer any legal right whatsoever. ., #AECC884 6. DSD SIGNATURE j ON-SITE �G / � WATER AND System #1 Approved for `7 bedrooms ;DWASTEWATER C:Z) System #2 Approved for bedrooms PROGRAM Disapproved 'O,p 50 Conditional approval for bedrooms, with the foi�ulatlons: I M0 11 gwiill W, z I ON wo 11 JIM, 0, By'. Original Certificate Date: 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 / Nitrate Advisory_ Septic System Advisory Arsenic Advisory Well Flow Advisory Other COSA blue sheet 10-10-12.doc �U /11 h-:1 Legal Description: SAMPSON ESTATES; BLOCK 16, LOT 3 If more than 1 septic system on lot: COSA Checklist # 1 of 1 A. WELL DATA A Well log is filed with Onsite (or attached) Date drilled 1112/84 Total depth *160 ft Cased to 160 ft Q Sanitary seal is functioning correctly ,Wires are properly protected Casing height (above ground) 12+ in. Date of flow test for COSA 1121/19 Static water level at beginning of test 151.2 ft Comments B. TANK DATA Age of tank(s) 12 years Tank type/material STEEL Fil Standpipes/foundation cleanout per record drawing Date of pumping A- v. 4 D 3. 3 o i ?) D. ABSORPTION FIELD DATA Parcel ID: 811-42 Structure served by this system 1 Well production at time of test 6.2+ gpm Water storage tank volume N/A gallons Well disinfected for coliform test? ❑ Yes FillNo [,Coliform bacteria is Negative Nitrate 23 mg/L ❑ Nitrate less than MRL (ND) Arsenic ug/L [,Arsenic less than MRL (ND) Collected by GEG, Ltd. Date of Sample 1/22/19 C. LIFT STATION ❑ Required maintenance completed Age of lift station _ years Lift station material - Comments: N/A Which system tested (date installed) 8129/07 Adequacy test date 1/22/19 WALL standpipes present per record drawing Results ✓❑ Pass For 4 bedrooms Total measured depth from grade 7+ ft (max) Fluid depth prior to test 0 in Measured depth to pipe invert from grade *2.6+ ft (min) Water added 720 gal ❑ N/A — pressurized field New depth 5 in A Monitor tubes go to bottom of drainfield. If not, state Elapsed time 120 min depth into effective FE-1Code-requiredsoil cover over field Final fluid depth 0 in X System presoaked Absorption rate 600+ gpd (Required if vacant for greater than 30 days prior to Any rejuvenation treatment (past 12 months) NONE date of test) Gallons introduced 2065 gallons If yes, enter date Comments/Deficiencies: 2007 DUAL TRENCH HAS 2 INCHES OF INSULATION -TESTED AND PRESOAKED SOUTH TRENCH ONLY. PRE-SOAKED ON 1/21/19 COSA Checklist yellow sheet ti E SEPARATION DISTANCES From Private Well onLot to: (Please enter distances if less than required nrifcommunity well) Septic Tank/Lift Station onLot>107 Community Sewer Manhole/Cleanout >i07 Fv�Yes ifNoft F,71 Yes ifNoft Neighboring Tanb>1UU' ZYon ifNoft Private Sewer/Septic Line >25' FV-1YesifNoft Absorption Field onLot >18O' [71 Yes ifNoft Holding Tank >1UO' ZYea ifNoft Neighboring Absorption Fields > 100' Animal Containment > 50' [71 Yes ifNoft ��Yoa if � �� ---- Manure/Animal Excreta Storage >1OU' Community Sewer Main > 75' ��Yeo ifNoft F,71 Yes ifNoft From Septic/Holding Tank on Lot to: (Please enter distances if less than required) � Building Foundations >1O' F-JYea if No ft Surface VVobsr>1O0' FV�Yeo ifNoft � Property Line >5' F,(�Yoe iyNoft Driveway/Parking >O' F71 Yes ifNo, comment 1^-- Absorption Field > 5' ��Ye s |fNoft VVe||a on Adjacent Lots: Water Main >10' FV-] Yes if No ft Private Wells >100' [/�Yes if No ft Water Service Line > 10' F,/� Yes if No ft Community Wells > 200' FV -1 Yes if No ft From Absorption Field on Lot to: (Please enter distances if less than required) Building Foundation >1O' �1Yeo ifNoft Driveway/Parking >[/ F71 Yes ifNo, comment Property Line >1U' F,71 Yes ifNoft Wells onAdjacent Lots: Water Main >1O' FVqYas ifNnft Private Wells >�1OU' Yoa if No ft Water Service Line >1O' FV-qYeo |fNnft Community Wells >200' ��Yes ifNo# Surface VVabar>1UO' [/�Yea ifNoft ?V-.3 L \Jo F. ENGINEER'S COMMENTS *DISTANCE FROM WELL ON SAMPSON ESTATES; B4, L21 TO 198,( RESERVE TRENCH' iSUNABLE T[}BEVERIFIED BECAUSE Kj[>PIPES ARE PRESENT FOR 1984TRENCH. TANK TO BUILDING F{]UN[}/\TI{)N IS 5'+ & MET C{][)E AT TIME OF INSTALLATION Q. ENGINEER'S CERTIFICATION /certify that / have determined through field inspections and review ofMunicipal records that the above systems are /nconformance with MOA C0SAguidelines ineffect onthis date. r1A VA 10�01� �dt ffr y Gar ss..' E—J9)3 CoaAChecklist yellow sheet -#Asccuu^' �� www.muni.org/onsite Nitrate Advisory Certificate of On -Site Systems Approval # OSC191034 Subdivision: Sampson Estates, Block: 3, Lot: 16 A water sample revealed a nitrate concentration of 8.03 milligrams per liter (mg/L). The Environmental Protection Agency (EPA) has established a maximum contaminant level (MCL) of 10.0 mg/L for public drinking water systems. While private wells are not subject to this regulation, EPA standards are based on existing health information and can therefore be used to gauge the relative quality of water from private wells. Since nitrates are known to slowly increase, we recommend you monitor the water quality. Please see the attached "Nitrate Fact Sheet" for important information regarding nitrate. This advisory must be attached to all copies of the subject Certificate of On -Site Systems Approval. From Northern Testing Laboratories, Inc. Nitrate is a negatively charged compound of nitrogen and oxygen, which is very soluble in water. Nitrate is not readily filtered or otherwise removed in the soil and can pass rapidly into ground water wells. SOURCE: Nitrate is a major component of fertilizer and wastewater. Often the nitrate is in the form of ammonia or protein first, which through contact with oxygen and certain bacteria, converts to the oxidized form known as nitrate. Sources of nitrate from wastewater include urea, ammonia cleaners, food solids, and bacterial cells. It may also result from the breakdown of organic matter buried in the soil. TOXICITY: Nitrate is generally not toxic to adults or children over the age of two or three years, but is associated with a potentially fatal infant disease called methemoglobinemia. In the digestive system of young children, nitrate converts to nitrite, which can pass through the intestinal wall into the blood stream. There it combines with the hemoglobin and interferes with the ability of the blood to carry oxygen. For this reason, methemoglobinemia is referred to as "blue baby" disease. The EPA limits the concentration of nitrate in public drinking water supplies to 10 mg/L. The standard has been lowered from a previous level of 45 mg/L set by the US Public Health Service and the World Health Organization. TREATMENT: due to its solubility in water and negative ionic charge, filtration and other common home water treatment systems such as softening or iron filtration does not readily remove nitrate. The best method for limiting nitrate in well water is source control. This can include avoiding overdosing of fertilizer near the well and maintaining good separation distances between septic tank leach fields and the well. A special anion exchange filter that contains a media with a strong affinity for negatively charged ions in water, or by a reverse osmosis treatment system or distillation can remove nitrate. TESTING: Nitrate analysis is usually done by one of the several "wet chemical" methods using a spectrophotometer to read the final color endpoint. Specific ion electrodes also can be used to detect the activity of nitrate in water. This laboratory uses several different wet chemical methods approved under the public water supply laboratory certification program. They also have test kits available, which the laboratory uses to perform an inexpensive "screening test", and with which the homeowner can monitor the change in nitrate levels from their well. They recommend comparing the test kit results against a certified analysis from the lab occasionally to verify the accuracy of the kit. 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