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Home My WebLink AboutTRAILS END BLK 2 LT 9Municipality of Allclloragc 6eor,j : W. erc____h, ,~h,yo~ Building Safciy Di~ston P.O. l~x 1,q('~(i,=,0 * 4700 S. Bragaw Slrcct Anchorage, Alaslu~ ~)519-('[~"',0 * (,907) 3-13-8301 6/7/2001 httl~://w.,rw.¢Lnnchorngc.ak.us $ohn & Cathy Weaver 8420 Longhorn St. Anchorage AK Public Works Subject: Expired On-Site Water and/or Wastewater Permit. Permit Number: SW000002, Parcel ID: g015-191-23 Dear John & Cathy Weaver: An On-Site Water/Wastewater Permit, number SW000002, issued by this office for a single-family system, expired on January 6, 2001. This permit was valid for 365 calendar days. If this was a well permit and the well has been drilled, a well log must be sent to this office for documentation of the installation and to close the permit. If this permit was for a wastewater disposal system, an original as-built inspection report must be sent to this office for review, approval and documentation. This as-built inspection report must be signed by the licensed Professional Engineer who inspected the installation of the system. As-built inspection reports are required to be submitted within 30 days ofthe completion ofthe system. If no system was installed under this permit, and you are still planning to install a well or wastewater disposal system, a new permit must be obtained from this office. When applying for a new permit, the fees are: $320.00 for a wastewater permit and $120.00 for a well permit. If you have any questions, please call this office at 343-7904. Sincerely, {Letters Sent 6/7/01 without copies being made, second printing for file copies} . James Cross, PE Manager On-Site Water and Wastewater Program eno: Copy of permit Alaska Water & Wastewater Consultants, Inc. 6901 Debarr Road, Suite 2B ~ Anchorage ~ Alaska 99504 (907) 337-6179 ~ Fax (907) 338-3246 Consulting Engineers November 29, 1999 Municipality of Anchorage Department of Health & Human Services Division of Environmental Services On-Site Services Section P.O. Box 196650 Anchorage, Alaska 99519-6650 Ret': Septic System Upgrade for Lot 9, Block 2, Trails End Subdivision (Bottomless Intermittent Sand Filter - ISF) To whom it may concern: The existing 4 bedroom house is served by a private well and septic system. The existing septic system consists of a 1250 gallon septic tank and a bed type drainfield. The existing bed is surcharged and must be upgraded. Comments regarding the proposed upgrade are summarized as follows: 1. GENERAL: Several test holes were excavated on the south half of the property to determine an area suitable for a septic system upgrade. Due to the high groundwater in the area, only one test hole was found to be suitable for an on-site septic system. Given the limited area around the test hole and the setbacks from the existing septic system, we are proposing that a 18' by 20' Bottomless Intermittent Sand Filter be installed. 2. SOILS: On November 1, 1999, two test hole were excavated and groundwater monitoring tubes installed. On November 16, 1999, t~vo additional test holes were excavated and groundwater monitoring tubes installed. As can be seen on the attached soil logs, TH#2, TH#3, and TH#4 were found to be unsuitable for a on-site septic system. We are proposing that a bottomless I.S.F. system be installed within the 30 foot radius of TH#1. In TH#l, the soils below the organics is a SP/ML material to a depth of 4.5 feet and than transition to a SP material to a depth of 12.5 feet {bottom of test hole). Ground water was encountered at a depth of 6 feet at the time of excavation and ten days later, water was found to be at 4'9"+/-. A percolation test was performed between 2.0 feet to 2.5 feet, and determined the rate to be at <1 minute/inch. · 3. DRAINFIELD DESIGN: Bottomless Intermittent Sand Filter (ISF) a. Percolation Rate: <1 minutes/inch b. Allowable Application Rate for ISF: 2 gallons/day/fi2 c. Number of Bedrooms: 4 d. Design Flow: 600 gallons per day e. Minimum Absorption Area: 300 ft2 f. Effective Depth below pressure pipes: 2.5+ inches g. Width: 18 feet h. Length: 20 feet. i. Effective absorption area = 360 tt2 j. Air Supply: Thomas Industries, Model 5070, "Anchorage Tank". k. Air Supply Line: "Wasteflow" emitterline, 1/2 inch I.D, "Anchorage Tank". 1. Sand Material: In accordance with M.O.A. latest standards m. Pea Gravel: 100% passing 3/8" sieve, less than 20% passing the 1/4" sieve, and less than 1% passing the #8 sieve. We are proposing to excavate down to a depth of 2.5 feet (maximum - remove all organics), place a minimum of 6 inches of sand, install the air supply line, and cover it with 1.5 feet of sand. On top of the sand, we will place 6 inches of 3/8 inch pea gravel, with the pressure laterals midway in the layer. We will use a conventional lift station {Anchorage Tank), equipped with a programmable timer so that flow can be intermittently dosed to the 1SF. 4. SURFACE WATERS: There is no surface water within a 100 foot of the the proposed septic system upgrade. $. TOPOGRAPtlY: As can be seen on the attached topography site plan, there are no slope concerns. 6. MATERIALS AND CONSTRUCTION PRACTICES: The materials used, and the construction practices will comply with DHHS' "Intermittent Sand Filter Design, Installation & Maintenance Manual". The contractor should read this document prior to construction. Copies are available at the Municipal Onsite Services office (Sth floor, 9th & L St.). 7. CLOSING: I am open to any suggestions from your department, which would be an improvement to the proposed design. I am unaware of any adverse impacts this installation would have on adjacent wells or septic systems. If you have any questions, please contact me at 337-6179. Thank ou for your assistance. ~p.E., M.S. 'dK 0 4 000 ~ $~v~ " i i II II I I II I II I / ! \ \ .~'~ i i ~ ~ LONGHORN STRE~ ~ ~' ~'~' I J -~I~NG FOUR ~PRO~sml~ [mC U~ II I j ~ ....... L I I I I mT I SLY Fox LOT 2, B~K I ~T 3, B~K I J I r ~AS~ WAlK ~ WAS~WA~K CONS~T~S, ~C.~ ,,--* OF / TRAI~ END SUBDIVISION; LOT 9, 8LOCK 2 ........................ , SITE P~S ~0~ SEPTIC SYST[~ U~G~OE (I.~.~.) ....................... 'nes~: PREPPED FOR: PHONE NUMBS: J,LM. I = 100' 10~ 3 ofess~°~~ i I ~ ~ ,, i .OT~: THE CONTRACTOR SHALL HAVE / , // ~ I I m~ EAST PROPERTY UNE FLAOGED ~ t ,, ×× × , i ~, A REGISTERED LAND SURVEYOR it' ~ Y" .~,// / I I PRIOR TO CONSTRUCTION. \ ,~, / ~ I ~E NR ~MPR~R ~ BE A ~0~ B, ~PRO~ B~M~SS I I ~ET~ ~[NR UNE S~ BE . · J ~VA~ 18' WIDE ~ 20' ~NG I J ' J I (SE[ D~L ~O PROR~ P~E 3 OF 3: I PHONE (907) ~57-~79/F~: (907) ~-~246 TRAI~ END SUBDIVISION; LOT 9. BLOCK 2 DESIGN OF SEPTIC SYSTEM UPGRADE (I.S.F.) ~. ~ ....~:... JOHN AND CATHY WEAVER (907) 555-8802/546-4560 ,~_. '.. ..' ~ ~ .~ AKI2 121S'~ P~'l~ , I I I I I I I I I ~v~"~ I' , ~ ; ~: I , , I, ~ .... "~~~) PF~ ~~ I I I I I I I I I I Io~/ ~.~r~r.~ P~N VIEW ~'~'~ PY~ f~. I ~L~ 18" ~~ ~e~ PROFILE VIEW LOUIS AND MARY BALEST (gO7) 227-8525/546-1971 ~'e 11/25/99 Io~w" ~: I~ IP~ J.LM. N.T.S. 3 OF 3 ALASKA WATER &: WASTEWATER. CONSULTANTS, INC. 6901 OEBA~R ROAD, SUITE 28 * ANCHORAGE, AK, 99504 PHONE (907) 3,17-6179 * FAX (907) 358-3246 ]SOIL LOG - PERCOLATION TEST] LEGAL DESCRIPTION: PERFORMED FOR: DATE PERFORMED: TRAILS END SUBDMSlON; LOT 9, BLOCK 2 JOHN AND CATHY WEAVER 11/1/99 O.C.~NICS l TEST HOLE # 1 I SP WEll ML LENSES SP S01L CLASSIFICATIONS ~GW ~ ORG GP HL GM CL GC OL SW HH SP CH SH OH SC DEPTH TO 3ROUNDWATER DATE 6' 11/1/99 4'-9'+/- 11/11/99 DATE 11/2/99 READING CLOCK TIPIE NET TIHE (HINUTES WATER LEVEL READING NET DROP (INCHES) COHHENTS: PERCOLATION RATE TEST RUN BETWEEN <1 ,(HIN./INCH) PERC. HOLE DIA. 2.0 FT. AND 2.5 FT. 6 (INCHES) PERFORMED BY ALASKA WATER & WASTEWATER. I, JEFFREY A. OARNESS, CERTIFY THAT THIS WAS PERFORatED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDEMNES IN EFFECT ON DATE: !/=~/Zeoo ALASKA WATER & WASTEWATER CONSULTANTS, INC. 6901 OEI~R ROAD. SUITE 2B ' ANCHORAGE. AK. 99,504* PHONE (907) `357-6179 * FAX (907) .3.38-3246 ISOIL LOG - PERCOLATION TESTI LEGAL DESCRIPTION: PERFORMED FORk DATE PERFORMED: TRAILS END SUBDMSION: LOT 9, BLOCK 2 JOHNAND CATHY WEAVER 11/1/99 ITEST HOLE #21 ORGANICS SW WITH SP LENSES SOIL CLASSIFICATIONS GP ML GM CL GC OL SW MH SP CH SM OH SC DEPTH TO DATE 3ROUNDWATER 4' 11/1/99 2'-4' 11/11/99 DATE READING CLOCK TIME NET TIME MINUTES WATER LEVEL READING NET DROP (INCHES) COMMENTS: PERCOLATION RATE - (MIN./INCH) TEST RUN BETWEEN - FT. AND UNSUITABLE FOR ON-SiTE SEPTIC PERCo HOLE DIA. - FT, - (INCHES) PERFORMED BY ALASKA WATER & WASTEWATER. l, JEFFREY A. GARNESS, CERTIFY THAT THIS WAS PERFORm/ED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL CUlDEENES IN EFFECT ON DATE:,~_J_~,,~ ALASKA WATER & WASTEWATER CONSULTANTS, INC. 6901 OEI~RR ROAD, SUIT[ 2B ' ANCHORAGE, AK. 99504 PHONE (907) ~57-6179 · FAX (907) ~58-3246 ISOIL LOG - PERCOLATION TESTI LEGAL DESCRIPTION: PERFORMED FOR: DATE PERFORMED: 33~AILS END SUBDNiSION; LOT 9. BLOCK 2 JOHN WEAVER ITEST HOLE #,3I ORC_~ICS SOIL CLASSInCATIONS eM ~GW ~ORG GP ML GM CL ML GC OL SW MH SP CH SM OH SP SC DEPTH TO 3ROUNDWATER DATE DATE READING CLOCK TIME NET TIME (MINUTES WATER LEVEL READING NET DROP (INCHES) ,(MIN./INCH) FT. AND PERCOLATION RATE TEST RUN BETWEEN. COMMENTS: ENCOUNTERED SEWAGE FROM THE EXISTING BED. HOLE WAS ABANDONED. UNSUITABLE FOR ON-SEE SEPTIC SYSTEM. PERFORMED BY ALASKA WATER & WASTEWATER. I, JEFFREY A. GARNESSo CERTIFY THAT THIS WAS PERFpP~IED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDEUNES IN EFFECT ON PERC. HOLE DIA. FT. (INCHES) ALASKA WATER & WASTEWATER CONSULTANTS, INC. 6901 DEBA~R ROAD, SUITE 2B · ANCHOR~E, AK. 99504. PHONE (907) ,337-6179 * FAX (907) 358-,3246 ISOIL LOG - PERCOLATION TEST1 LEGAL DESCRIPTION: TRNLS END SUBDMSION; LOT 9, BLOCK 2 PERFORMED FOR: JOHN WEAVER DATE PERFORMED: 11/16/99 ORC-ANICS AND FILL ORGANICS SW/SP SP SM ITEST HOLE #41 SOIL CLASSIFICATIONS ~GW ~ ORG GP ML GM CL GC OL SW MH SP CH SM OH SC DEPTH TO GROUNDWATER DATE 5' ML O BOTI'OM OF HOLE DATE READING CLOCK TIME NET TIME (MINUTES WATER LEVEL READING NET DROP (INCHES) PERCOLATION RATE TEST RUN BETWEEN (MIN./INCH) PERC. HOLE DIA. FT. AND FT. (INCHES) COMMENTS: UNSUITABLE FOR ON-SITE SEP'HC SYSTEM. PERFORMED BY ALASKA WATER & WASTE'WATER. I, JEFFREY A. GARNESS, CERTIFY THAT THIS WAS PERFQRyED IN ACCORDANCE WiTH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON DATE: I1713~ ~oo ~= oa ~ ~j~= Frojx~7. operation ~ sl~ v~i/7 tim t~ ea~eer l~ in~pec~ ~l efll~ ~d a/r ' [~n~, ~m_~_, a~/abra, aM ~h~t a~y defid~:ie~ ~ave be~ ~ an/tl~ ~ Na~) --' ---~tartze Here = , L ........ ~)~ ~- ~~ perso~y appeared before ~, ~ ~ ~n perso~lly ~ to ~ vhose ~danCiCy Z proved on the basis of hooe ~dentit~ I p~ov~d on the bach/af~i~tton of