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Home My WebLink AboutHENKINS BLK 3 LT 8henkins lock Lot 8 051-292 -01 UNICIPALITY Community Development Department Development Services Division On-Site Water & Wastewater Program Mayor Dan Sullivan OF ANCHORAGE Phone:907-343-7904 Fax:907-343-7997 ON-SITE SEWER/WELL PERMIT APPLICATION FOR A SINGLE FAMILY DWELLING Parcel I.D. 0 ~ Property owner(s) I-- Mailing address /~"' S ~-/~'. '- -~O~..,- Site address ~) ~ Legal description (Sub'd., Block & Lot) Legal description (Township, Range & Section) Lot Size 2~ .~ Sq. Ft. Day phone Number of Bedrooms ._~ THIS APPLICATION IS FOR: ([~ all that apply) Absorption Field Septic Tank Holding Tank Privy Private Well Water Storage THIS APPLICATION IS AN: Initial /j~2 Upgrade [] Renewal [] THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR: 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. ' ~au horized agent) (Signature of property owner or Permit/Rush Fees: Date of Payment: Receipt Number: Permit No. Waiver Fees: Date of Payment: Receipt Number: Waiver No. G:\Building\On Site\Forms\Client Forms\Permit App_010411 .doc (Rev. 1111 ) ~ ENGINEERING MEMO Steve Eng, PE, PH P.O. Box 770724, Eagle River AK 99577 (907) 694-7028 tel north rimeng@aol.com Date: 10/10/11 To: Deb Wockenfuss, MOA On-Site Services Subject: Henkins S/D, Block 3, Lot 8 Septic System Design & Water Well Location Comment Sheet 10/5/11 Number of Pages: Comments are addressed & attached per 10/5/11 Comment Sheet. A new house and wastewater system are planned for the subject lot. The test hole showed excellent sand w/gravel to 12', and no groundwater. The design calls for a new trench, new septic tank & private sewer lines. The soil perked faster than 1 minute per inch, but is about 60% sand. Private & public water wells serve the area lots and are shown in drawings. A proposed private water well site is included. Lot slopes from west to east. Please review the wastewater system design & water well location for the single family home. I have included design plans & specs, design guidelines, & soil tests. If there is need for additional information or clarification please give me a call. Thanks- ~__~S~<~ Henkins, Block 3, Lot 8 SPECIFICATIONS & DESIGN GUIDELINES Wastewater System Sizing: This is a new 3-bedroom, single family home. This is an established subdivision and most of the neighboring lots are developed. These lots are large and are served by private water wells. No adverse impacts are expected from development. No conflicts to the other lots will take place by this septic system and water well construction. The easements are located on the drawing and are not encroached upon. Soil tests revealed sand w/gravel soil. An application rate of 1.0 GPD/FT2 with 0.7 reduction factor for utilizing a 5' wide trench. Trench Length: 450 FT2/5'x .7 reduction factor = 63'; 1 line ~ 6 3'. Refusal was encountered ~ 12'. Monitoring revealed no groundwater. Specification Requirements: All components and work must comply with the Municipality of Anchorage Specifications (AMC) & State of Alaska Drinking Water Regulations and Wastewater Regulations. · Two compartment, 1000 gallon septic tank. Watertight couplings on inlet & outlet. · 5' minimum between the tank and bed. 10' to property lines. · 3' of cover or insulation is required for trench; an equivalent of 1" insulation for 1' foot soil cover. · Tank & solid pipe must be set on well compacted, stable soil. · 4 inch diameter cleanouts with airtight caps are required 1' to 4' from foundation wall, prior to any 90 degree bend in 4 inch line, in each tank compartment, and two adjacent opposing cleanouts between the tank and the absorption field, not more than 10' from the tank positioned to provide cleanout access towards the tank and towards the absorption field. · All cleanouts must extend to at least ground level. · In solid pipe runs, ASTM D-3034 may be used in lieu of cast iron. · Trench to be placed level, minimum of 4' to groundwater, 6' to bedrock from drain- rock. · Drain rock to be ½ inch to 2 ½ inch screened. Drain rock to be distributed uniformly throughout the trench. · Perforated pipe to be installed level with perforations down. · Silt barrier (filter fabric) to be installed above the drain rock. · Smeared trench sides must be raked or scarified before drain rock placement. · The finish grade must be mounded to promote drainage over the trench. · Insulation must be placed over any pipe installed under driveways or parking areas. · Approved pipe materials include cast iron, PVC ASTM D3034, PVC ASTM F789, ABS ASTM D2661, · Sewer Service Line is minimum 2% slope. · Septic Tank to be pumped every two years or when required. · Insulation board to be extruded direct burial polystyrene (Dow Styrofoam HI/equal) (D > cD 0 _0 W W U 0 Fq Z --I 0 Z Z Z [22] ~ ~ <~ SBILS LBG - PERCBLATTBN TEST Date PerFormed: 9/23/11 PerFormed For: Troy Davis Le9a[ Description~ Henkins, Brock 3 Lot 8 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 21 DEPTH (FEET) - :!.;:.::...:.,!:~.~:.i'-~ -,;.... ' .-,..,: · :..S :.v !;::.d. :'.~i L' :J!'; '( - :,:! :C.'."':;:z'Q" _ ,~;.~..,;.,.::?.?':'; ..,~; ?' ~:' :,.'.'.' _ ',..'.'.,.~...'.~..:. Organic SP Sand w/ Graver Cobbies ReFusat T,H, Location~ See Attached Design Groundwater? No Depth -- Water Depth AFter Monitoring,None Date: 10/1/11 $ Dote Gross Time Net Time' Depth Net Drop 1 i0/6 0 -- 3# -- 2 10/6 2 2 mir, 9" 6,0" 3 10/6 3 3" 4 10/6 5 P min, 9" 6,0" 5 1016 6 -- 3. -- 6 10/6 8 2 min, 9" 6,0" 7 10/6 9 -- 3# 8 10/6 11 2 rain, 9" 6,0" 9 10/6 13 -- 10 10/6 15 2 rain, 9# 6,0" Percotation Rate <1 min,/inch Perc Hote Diameter Test Run Between 3' and 4' Comments: 60X PerFormed By Nor±bRim Eng, I ~ ~ CERTIFY THAT THIS TEST WAS PerFormed in Accordance with A(( State/Municipa[ Guidetines in EFFect BN THIS DATE, DATE: 10/1/11 ~.,:~-~>. .... .,. ~, NORTHRIM~;,:~9]~.~'...~.~ TESTHOLE LOG ZN6/NEZmN6 T H, 1 gogle River, Alosko 99577 $+~".. ~ ..' ~ ~o~.~.~o~ '~ 2~, ~ GEOTECHNICAL i~ ~a~ SBILS LOG - PERCOLATION TEST Da-re Perf'ormed: 10/6/11 PerFormed For: Troy Davis Le9cL Description: Henkins, BLock 3 Lo~ 8 DEPTH (FEET) 1 - "'- ".'"";<':': .";....':,..,]. :..".'.v. -- ... :.'~..':,':, . 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - la - 13 - 14 - 15 - 16 - 17 - 18 - 19 - aO - al - Organic SP Sand w/ Gp~ve[ T,H, Loc~ion: See A~ached Design Groundwater? No Depth -- Water Depth AFter Monitoring,None Date: ~ Date Gross Time Net Time Depth Net Drop: 1 10/6 0 -- 4,, -- 2 10/6 B 2 min, 10" 6,0" 3 10/6 3 -- 4" 4 10/6 5 P mir, 10" 6,0" 5 10/6 6 -- 4,, -- 6 10/6 8 ~ mir, 10" 6,0" 7 10/6 9 -- 4,, -- 8 10/6 11 2 min, 10" 6,0" 9 10/6 13 -- 4,, -- 10 10/6 15 2 min, 10" 6,0" PercoLation Rate <1 min,/inch Perc HoLe Diameter Test Run Between 3' and 4' I wi-th Comments: 60X Sand, PerFormed By Nor±bRim Eng, PerFormed in Accordance ON THIS DATE, DATE~ 10/6/11 ~ CERTIFY THAT THIS TEST WAS ALL St~te/Municipc[ GuideLines in NOFeTHFEIM ~:-~~~1[".~%~ TESTHOLE LOG T H 2 ENGINEERING ~'~"'"'"l ' ' PO BOX 770724 ~.[.. ~_~ ..' ~ Eagle River. Alaska 99577 9~ ',,, ~, ,' ~ ~o~.~.~o~ "~ '7~/;~i GEOTECHNICAL ~a,,~ ~a~