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HomeMy WebLinkAboutNETTLETON ACRES #1 LT 5 RECEIVE[) JUL 1G 1999 Municipality of Anclaorage Dept. Health & Human Services II p, I/ Rick MFslrom. Mavor Municipality of Anchorage Department of Health and Human Services 825 "L" Street P,O. Box 196650 Anchorage. Alaska 99519~6650 hltp:/lv,,'ww.ci.a nchorag e. a k. us July 8, 1999 Samue, Brent & Dawn Hill and William & Patty Geest 6810 HYATT STREET Anchorage, AK 995072448 Subject: NETTLETON ACRES #1 LT 5 Permit # SW980166 PID # 015-062-66 The subject permit, issued 6/11/98 by tiffs office for a single family well and/or on-site wastewater system, has expired as of 6/11/99. If you have drilled the well, a well log must be sent to tiffs office for documentation of the installation and to close the permit. If a licensed Professional Engineer has inspected the installation of the on-site wastewater system, the original as-built inspection report must be sent to tiffs office for review, approval and documentation. All inspection reports must be submitted within 30 days of construction completion. A new permit must be obtained from tiffs office for a well and/or on-site wastewater system NOT installed by the expiration date. When applying for a new permit, the fees are: $320.00 for an on-site wastewater pe~2nit and $120.00 for a well permit. If you have any questions, please call this office at 343-4744. Sincerely, Program Manager On-site Services enc: Copy of Permit 07/23/1gg? 14:3B 34532B? DRILLING, M-W DRILLING, Inc. P.O, Box 110376 · 10330 (Did Sewerd Highway (gO7) 34§-8535 ANCHORAGE, ALASKA 99511 DRILLING LOG Well Owner_, DAVID AND PATTY INC PERMIT PAGE 01 #$W980166 Use of WellDOMESTIC Location (address of: Township, Range, Section, ii known; or distance mstn road. LOT 5. NETTLE~ON A~RES t/1 .' 9310 IqETTLW, TON ~tze of ca~ing 6" Depth of Hole. 120 .,,feet C~edto_~eet Static water level e 0. ft. (t~o~?. {below)' land surlace. Finish o~ well (0heck' one) open end ( X ); (minute) for .1 hou~ with ft. Depth in feet from ~' gr otuld su~ace 0 TO 2 . ~ ..... TO 4 ,, ..,4 TO 31 __5~ ...TO 57 ,., 57 TO. 100 . Gl 100 TO~I 0 2 · 10~.. TO_LAQ__ TO WELL LOG of formations penetrated, size of material, color and hardness --.TO TO~ --.TO.. . TO. ----TO. D"rEIVED JUL. 26 1999' Municipality of Anchorage Dept. Health & Human Services 3 -- CONTRACTOR MUNICIPALITY OF ANCHORAGE Department of Health and Human Services On-Site Services Program 825 L Street, Room 502 P.O. Box 196650, Anchorage, AK 99519-6650 ¢07) 343-4744 ON-SITE WASTEWATER DISPOSAL SYSTEM / WATER SUPPLY PERMIT Initial Date Issued: Jun 11, 1998 Expiration Date: Jun 11, 1999 Permit Number: SW980166 Design Engineer: Anderson Engineering Owner Name: David & Patty Geist Owner Address: 9210 Nettleton Drive Anchorage, AK 99516- Parcel ID: 015-062-66 Legal Description: NETTLETON ACRES #1 LT 5 Site Address: Lot Size: 97100 SQ. FT. Total Bedrooms: 4 Permit Bedrooms: 4 This permit is for the construction of: ~ Disposal Field ~ SepticTank I~] 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 DHHS at least 2 hours prior to each inspection. Provide notification by calling (907) 343-4744 ( 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. Received By: Issued By: Date: Date:~J! /¢. June 3, 1998 Municipality of Anchorage Department of Heath & Human Services 825 "L" Street Anchorage, AK 99502-0650 Subject: Lot 5, Nettleton Acres Subdivision Septic System Design Impacts to Adjacent Properties Dear Onsite Services Engineer: The owner of Lot 5, Nettleton Acres Subdivision intends to construct a 4 bedroom home on the lot. We are therefore applying for a permit to construct a well and septic system on the lot to serve the house. The attached site plan and backup documentation identify the size and location of the new absorption bed to serve the home. It also shows the proposed location of the well and the 100' protective radius. The property surrounding the lot is currently undeveloped and no conflicts are evident. A testhole was placed on the lot by S&S Engineers in March of 1992, during the subdivision phase of the property which revealed silty gravel with a percolation rate of 27 minutes per inch. This hole, however, was placed within the 100' setback from the drainage easement. Additional testholes were placed last Spring by Jeff Garness which revealed percable soils, but substantial groundwater. Sinced that time the owner of the property has installed a french drain and improved the drainage on the property. A testhole placed in late May showed no groundwater indicating the french drain is apparently controlling the flow. The absorption trench has been designed for placement in the area of no groundwater. We have used a composite absorption rate to design the trench based on materials encountered. The top 3' of the trench is gravelly material with a percolation rate under 5 minutes per inch. The next 5' of the trench is a silty sand with a percolation rate of 60 minutes per inch. The silty sand is underlain by a poorly graded sand which percolates under 5 minutes per inch. We have used a composite rate of .6 gallons per day per square foot Lot 10, Block 2, Park Hills June 2, 1998 Page Two to design the trench. This rate is conservative since half the trench will be in soils with an absorption rate of 1.2 gallons per day per square inch. The surface of the lot slopes from east to west at a gradual rate which increases radically toward Hillside Drive. The area is fairly flat in the area of the proposed absorption trench. If the system is constructed as designed the following statements apply: The system, if constructed as designed, will have no adverse impact on the wells in the area or those to be constructed in the future. The system, if constructed as designed, will have no adverse impact on existing septic systems in the area or those to be constructed in the future. The system, if constructed as designed, will have no adverse impact on reserved space, either surface or subsurface, on any lots located in the area. The system, if constructed as designed, will have no adverse impact on drainage patterns in the area. The current drainage pattern will be maintained. Sincerely, Michael E. Anderson, P.E. Attachments =0~TION DETERMINED ~¥ iNTERSECTiNG AREA MAP SCALE 1" = 100' ~0.00 12 /5 30' I~NAGE [SMT, ' LOT 5, NETTLETON ACRES TH1 (S&S) Effective Dept~ ' Absorption Trehch '"'{ 1 250 °.l Sep. Tan Four Bedroom ~ Home ~ ~.~. Proposed Well SITE PLAN SCALE 1" = 40' EN 1S (10/78) LOT 5, NETTLETON ACRES SUBDIVISION DESIGN FACTORS: SYSTEM REQUIREMENTS: Four Bedroom Home Perc. Rate: Varies Min./Inch Application Rate: .6 GPD/SF Deep Trench System 1,250 Septic Tank 10' Drainfield Rock 4 Bedrooms X '150 GPD / .6 GPD/SF = 1,000 SF of Absorption Area 1,000 SF/20 SF/ LF of Trench = 50 LF Trench Length Therefore: Construct a Deep Absorption Trench System With One Lateral 50' in Length with 10' of Drainfield Rock Beneath the Lateral. Distribution Pipe in Trench Placed at 2' Below the Original Ground Surface. Mound Over Trench to Provide 3' of Cover. 10' I $~0" ,I GP/GM 1 . 2 gpd , g..~,~ ~t I= t?l,~ ML/SM ~.~ ~. .4 5 gpd SP 1 . 2 gpd 1.5i 5.0I 10.0' NOTE: TYPICAL DEEP TRENCH SECTION (NO SCALE) Grade Area Over Trench to Drain Away. Minimum 3' of Cover over Septic System. Minimum 4' Separation From Groundwater. Maintain Separation From Wells in Area. , Mu~k:lpallty c! Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES ~25 'L' Strut. Anchorage. Alaska ~502~ ,, . ~m ~Townshi0 Range Sectmn: SLOP~ SITE PLAN 10 ENCOUNTERED? ._L-'.L.O ' ' [ t 11 IF YES. AT WHAT 15 18 I~. PERCOLATION RATE .~ Im~l PERC H~E DIAMETER TEST RUN BETWEEN ~ , FT ANO ~FT PERFOnMED BY.F~I. II Iv.,. A t..U. oo~., 1 ?~'~4 £1~ll ~ Tv'"' I ~'~"' ge -*~ '~J'~' 204 ~ C[RIlFY THAT THIS TEST WAS PERFORMED IN~ ~ ~ ~ Municipality of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: 2 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18, 19 20 David Geist Lot 5, Nettleton Township, Range, Section: SLOPE SiTE PLAN WAS GROUND WATER ENCOUNTERED;' . IF YES, AT WHAT DEPTH? ~1oni~ing? /V P N ~ Reading ~ .'~0 I I II Net Time Depth to Net Water Drop . ~/c/" j/'~,,, PERCOLATION RATE ~(~ {mmutes/,nch) PERC HOLE DIAMETER TEST RUN BETWEEN ' 7 _ FT AND ,..~_~.__ FT COMMENTS ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: /' / 72-008 (Rev. 4/851 Municipality of Anchorage '..~"/'h ,'~ 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST LEGAL DESCRIPTION:_ .~.~..~_~--_c. =T:F [ . Township, Range, Section: / SLOPE SITE PLAN ., 1 2 3 4 5 6 7 8 9 I0 11 12 13 14~ 15 16 17 18 19-. COMMENTS ~ WAS GROUND WATER .-~ ]! ~ ENCOUNTERED? O I _m (~ ~ IF YES, AT WHAT ~ ,:t. DEPTH? ~.0 ~- Oepthlo Water A~ler [ '[_ Monitoring}' Gross Net Degth tO Net Reading Date Time Time Water · rlro~ PERCOLATION RATE 3o I ~m,nute,'Ulncn) PERC HOLE DIAMETER ~ // ': TEST RUN BETWEEN /° ~' FTAND ~'~ FT ""' .-, THAT T~ T,E~T./W~:~OI~.~ I~ 72-008 (Rev. 4/85) ' ~;': ' : "": Municipality d Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST P~R~ORMED FOR: ~ ~ ~'~ ', '-( ~C~ DATE PERFORMED: ~; ~ "~ LEGAL DESCRIPTION: ~ ~ I Township, Range, Section:~ ...~.~:~,:,.,,,~'~"~;.:'.".~. 6 7 8 9 10- 11 12 13 14- 15 16 17 18 19 20 COMMENTS SLOPE SITE PLAN WAS GROUND WATER ENCOUNTERED? IF YES, AT WH~ Depth Lo Waler Monilorm~? Oale: J i 3 · / 0 . .~,.. :.,; ...v ~. ~o PERCOLATION RATE~'~ (m~nutes/mctt) PERC HOLE DIAMETER ' ' '''~ ' -'."/ /cfi Z,,~' · .. ~ .- . TEST RUN BETWEEN ''~. FTANO FT .-':,,, '" 72-008 (Rev. 4/85) ON-SITE WASTEWATER DISPOSAL SYSTEM CONSTRUCTION AND MATERIAL SPECIFICATIONS SUBJECT: LOT 5, NETTLETON ACRES SUBDIVISION GENERAL: 1. The scope of this project includes the procurement and placement of a new 1,250 gallon septic tank. It also includes the construction of a new 50' long by 3' wide by 10' effective depth absorption trench at the location shown on the site plan. Fill will be required over the trench to provide a minimum of 3' of cover. 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. 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 Health and Human Services for system installations. Owners installing their own systems must receive prior approval from D.H.I--I.S. before beginning system installation. SEPTIC TANK INSTALLATION A new 1,250 gallon septic tank must be procured from an approved source and installed at the location shown. Lot 5, Nettleton Acres June 3, 1998 Page Two 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 ground must be perforated. Lot 5, Nettleton Acres June 3, 1998 Page Three 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 trenches 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. 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 watertight couplings (Caulder, Fernco, or equal). with Lot 5, Nettleton Acres June 3, 1998 Page Four 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: A minimum of two inspections are required by Municipal Ordinance. 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.