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Home My WebLink AboutFIRE LAKE LT 1 TR Au 4m 14 f EAPIF . d On-Site Water & Wastewater System Permit MUNICIPALITY OF ANCHORAGE Development Services Department On-Site Water & Wastewater Program 4700 Elmore Road, PO Box 196650 Anchorage, AK 99519-6650 Telephone: (907) 343-7904 Permit Number: OSP111307 Tax Code Number: 05133201000 Work Type: WellSeptic Initial Permit Effective Dates: October 28, 2011 to October 27, 2012 Design Engineer: GARNESS ENGINEERING GROUP LTD Subdivision: FIRE LAKE Site Legal Address: FIRE LAKE LT 1 TR A G:0554 Owner/Address: BILLMAN DAN B & PATTI E HC 1 BOX 1706 GLENNALLEN AK 995880000 Site Mailing Address: Lot Size in Sq Ft: 108900 Total Bedrooms: 3 This permit is for the construction of: Y Disposal Field Y SepticTank N Holding Tank N Privy Y Private Well N 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 wastewater code requires inspections during the installation. The engineer must notify the Development Services Department at least 2 hours prior to each inspection. Provide notification by calling (907) 343-7904 (24 hours). 4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather must either: A. Open and Close on the same day. B. Covered, sealed, and heated to prevent freezing. Date: / c~ l~) d'" / // MUNICIPALITY OF ANCHORAGE Community Development Department Development Services On-Site Water & Wastewater Program Phone: 907-343-7904 Fax: 907- 343-7997 Mayor Dan Sullivan On-Site Sewer/Well Permit Application For A Single Family Dwelling Parcel I.D. O~-~ J - ~ ~ ~ Property owner(s) DAN BILLMAN Mailing address HC01 BOX 1706 * GLENNALLEN, AK 99588 Day phone 250-3117 Site address HC01 BOX 1706 * GLENNALLEN, AK 99588 Legal description (Sub'd, Block& Lot) FIRE LAKE S/D; TRACT A OF LOT 1 Legal description (Township, Section & Range) Lot Size ] (~ ~, c/O(~ Sq. Ft. Number of Bedrooms 3 THIS APPLICATION IS FOR: ( [] all that apply) Absorption Field [] Septic Tank [] Holding Tank [] Privy [~] Private Well [] Water Storage r~ THIS APPLICATION IS AN: Initial [] Upgrade [] Renewal [] THIS APPLICATION INCLUDES A VARIANCE/WAIVER REQUEST FOR: SI. OPE WAIVER AND LOT LINE FOR DRAINFIELD. 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. GARNESS ENGINEERING GROUP, Ltd. (Signature of property owner or authorized agent) Permit/Rush Fees: Date of Payment: Receipt Number: (~_2~ / ~'~ (~ Permit No. ~ Waiver Fees: Date of Payment: Receipt Number: Waiver No. (Rev. 01/11) GARNESS ENGINEERING GROUP, Ltd. CONSULTANTS & GENERAL CONTRACTORS October 21,2011 Municipality of Anchorage Development Service Department On-Site Water & Wastewater Program 4700 Elmore Road P.O. Box 196650, Anchorage, AK 99519-6650 (907) 343-7904 Ref: Well and Septic Design for Fire Lake Subdivision; Tract A of Lot 1 To whom it may concern: Per the request of the owner, we have designed a proposed well location and septic system for a 3 bedroom house. Several test holes were excavated on the property. The proposed septic system will be designed around the 30 foot radii of test holes #5 and #6. We are proposing that a 1000 gallon septic tank and a bed type drainfield be installed. We are also proposing that a sewage pump station be installed for the garage which is on a lower pad from the house. The pressurized line from the sewage pump station to the septic tank may need to be placed is arctic pipe with heat trace due to outcroppings of bedrock between the garage and house location that will restrict burial depth. Comments regarding the proposed design are summarized as follows: 1. SOILS: Attached are the logs which show the soil classifications, groundwater monitoring, and the percolation test results. The percolation rate for TH#5 and TH#6 were found to be faster than 1 minute/inch so a 2 foot sand filter will be required. An application rate of 0.7 gallons/day/ft2 is required for a bed type drainfield with a sand filter. 2. BED DESIGN: See attached design drawing for drainfield specifications. 3. SURFACE WATERS: There is surface water (intermittent stream) south of the proposed septic system. The septic system will be installed 100+ feet of any surface water. 4. TOPOGRAPHY AND SLOPE WAIVER REQUEST: As can be seen on the attached design drawing, the proposed drainfield is to be installed on a fairly flat area in a swale. The general topography for the property runs southeast to northwest. We have attached a cross section detail drawing (page 3 of 4) which shows a profile of the slope 3701 E. Tudor Road, Suite 101 * Anchorage, AK 99507-1259 Ph: (907) 337-6179 * Fax: (907) 338-3246 * Website: www.garnessengineering.com conditions in the most crucial area. We are requesting a waiver from the drainfield to a slope that is greater than 25 percent. As can be seen on the profile, at a 25 percent slope 2 feet above the top of the drainrock (filter fabric) the slope does not daylight within 50 feet. However, we are requesting a 23 foot waiver from the drainfield to slope that that is greater than 25 percent. The following is mitigating factors for the issuance of the waiver: · Given the porosity of the soils, there should be minimal risk with lateral migration of the effluent. · The area below the drainfield is heavily vegetated. Given these mitigating factors, there is minimal risk with the granting of this waiver. 5. LOT LINE WAIVER REQUEST: We are also requesting a 5 foot lot line waiver from the proposed drainfield to the east lot line. In order to maximize the distance for the drainfield to the steep slopes were are proposing that the drainfield be installed parallel to the east lot line. The property to the east is Chugach State Park. We are unaware of any adverse impact on the neighboring property with the granting of this waiver. We are 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 you for your assistance. , P.E., M.S. NOTE: Attached is a site plan drawing, a design drawing, detail drawings, soil logs, and a 7 page construction specification letter which are all part of the design package for this septic system. 3701 E. Tudor Road, Suite 101 * Anchorage, AK 99507-1259 Ph: (907) 337-6179 * Fax: (907) 338-3246 * Website: www.garnessengineering.com FIRE LAKE S/D TRACT A OF LOT 1 GEG TH#f-,, DRAINFIELD~ SCALE: , / ~ / J TRACT E OF LOT 1 GARNESS ENGINEERING GROUP, Ltd. FIRE LAKE S/D, TRACT A AND TRACT C Of LOT 1 J L M ~3e,,._; I"-fS.." _ o fesmO~_~ SITE PLAN FOR PROPOSED WELL AND SEPTIC SYSTEMS 10/18/2011 "~ GEG, Ltd. HAS A 7 PAGE SPECIFICATION DESIGN CRITERIA (ALTERNATE): DESIGN CRITERIA (PRIMARY): LETTER THAT PEmAINS TO THIS DESIGN. USING ADVANCED WASTEWATER SYSTEM NUMBER OF BEDROOMS: 5 TO OBTNN A COPY OF THE LE'I'I'ER NUMBER OF BEDROOMS: 3 GALLONS PER DAY (GPD): 450 CONTACT GEG. BY PROCEEDING FORWARD WITH THIS INSTALLATION, THE ENGINEER, GALLONS PER DAY (GPD): 450 PERCOLATION RATE/S: <1 MIN./INCH WELL DRILLER, CONTRACTOR AND PERCOLATION RATE/S: <1 MIN./INCH PROPOSED APPUCATION RATE: 0.70 PROPERTY OWNER AGREE THAT THEY PROPOSED APPLICATION RATE: 4.0 MINIMUM DRAINFIELD SQ.FT.: 645 HAVE READ THESE SPECIFICATIONS AND MINIMUM DRNNFIELD SQ.FT.: 113 AGREE TO ACCEPT THE TERMS AND DRAINFIELD DESIGN: CONDITIONS OUTLINED. DRAINFIELD DESIGN: MAXIMUM DEPTH: 5 FEET ~ MAXIMUM DEPTH' 5 FEET WIDTH: 15 FEET ...~'""- WIDTH: 5 FEET ' LENGTH: 45 FEET ~..~'~' ~ LENGTH: 25 FEET M.O.A. APPROVED SAND FILTER: 2 FEET , ~ ac M.O.A. APPROVED SAND FILTER: 2 FEET EFFECTIVE: 0.50 ~ EFFECTIVE: 0.50 ACTUAL SQ.FT.: 675 ~ '~ / ACTUAL SQ.FT.: 125 j~' ~.-~-.. SMALL CU~BANK~ / .GTE: THE CO.TRACTOR SHALL HAVE ~ .~ /~ % / \ / ~ z~ THE EAST LOT UNE AND THE 100 FOOT -~ GEG THal,-~ ~/ SETBACK FROM THE STREAM FLAGGED .~" ~ '' / BY A REGISTERED LAND SURVEYOR .~-~' / %. ~' / / ~ ? ! O, PRIOR TO CONSTRUCTION. ~... xx ..-- ~r /- / /(' .-~"~ ' OLD TH '\ /SEE CROSS SECTION ~/ ~ '~ -~,~ ~ o~' o /~ ~/ INSTALL DBL CO"--~ // ~ ¥~'~',. ..' GEG T.~ ,~ROPOSED ,000 GALLO. ,~ /.~ ~+ ,~ OLD TH,I, -~ ./ SEPTIC TANK~ // X/.~' ,'~ ~ ~.~ ~ ~ ,/THICK INSULATION // ~ \ /// , ~ ,/" '~.'~ I JPROPO~ED 24'e PVC SEWAGE PUMP STATIO~-~ / UNDER DRIVEWAY.-~/x ~ \?' "~'~ / I x~ ,,' / L ~%~ / / /'~ ~?~ ~ ............ IL_J .o~__ ........... _./i ~1oo1\ / ' ~ / ! / o-g~-~~ / ........................ / I-"~ --cf-I DRAINFIELD ' ! ~ / / / ~ SITE. WILL REQUIRE / /~, ~ ~CED WASTEWATER SYSTEM-./ ~ (......'~".~.J ", PROPOSED ,* ,~' LINE. ~/ ~ ~ / ~ / 'GEG T.~51'.. '~. x\ REQUIRE TO BE/SLEEVED IN / ~ .,I( / , ] 'xx '~' '~.R..CTIC PIPE WIT~ HEAT TRACE. /.! I '"'.. '-. / I / f/ , ",, '~.~. / / ~1 I · C '"' PROPOSED 100 FEET WELL RADIU~ ,., I '~I~,. / I ~ ,oo. s~4BAc~ "%, \ 1' = 4o' / \ \ I \ / PREPARED FOR: IPHONE NUMBER: I PAGE NUMBER:',,x.z~.~ .l"//""/'""~";~':';";,' ..... DAN BILLMAN I 250-5117 I 2 OF 4 ~ '-)/ef*~y LEGAL DESCRIPTION: ' ' DRAWN BY: ~,"{]h~]"../ CE-,795,~ FIRE LAKE S/D; TRACT A OF LOT 1 JLM ' ' ' \'~L'~&~' ....... DESlG~ or PROPOSED ~EUL A~D SEPTIC SYSTE~ ~012~{20~ ~o ~o;~.' IP.o.~ .u.B~-.. I D ' ~ ~ ~c.,~o.: ~ ~ ~: k~/~~" _.~1 .- -~ FI.E ~KE S/D; TRACT A OF LOT 1 I ~'~'~' ~ o~ wo.~= ' c.oss s~c~o, to. s~o~ w~w..~u~s~ 4' MONITORING TUBE-----~O I 4" MONITORING TUBE.~I~. 4.5 FEET LONG -i MONITORING TUBE 4.' CLEANO 4." CL~OUT-~ 4" MONITORING TUBE t--FROM SEPTIC TANK 4-' MONITORING TUBE- 4' CLE. ANOUT--~ 4' CLEANOUT--~ 4' CLEANOUT--~ ~ 4-" MONITORING TUBER \ \ \ \ o cow, ~ .............................. ~ 0.5 ~ OF E~ECTIVE ~ .............. ~ ~ ~ · ~ ~ct~ FE~ OF ~OA APPROV[D ~N~ F~[E~%~:~,] I I ........ I 4'+ TO GROUNDWA~R~ " 10 ~L[~ W~UL '1 6'+ TO ~EDROCK 'T~~D &: ~EDED IN SPRING 2012. GARNESS iENGINEERING GROUP, Ltd. CONSULTANTS & GENERAL CONTRACTORS TUDOR RON), SUIIE 101 * ANCHORAGE., AN 99507 * F~ONE (g07)~37-6179 E, FAX (g07)538-3246 * t~tEBSI/E= m~m.gome~ettgineer~ng.com PREPARED FOR: I PHONE NUMBER: DAN BILLMAN I 250-5117 LEGAL DESCRIPTION: FIRE LAKE S/D; TRACT A OF LOT 1 TYPE OF WORK: DETAIL DRAWING OF DRAINFIELD PAGE NUMBER: 40F4 IDRAWN BY: J.L.M. DATE:lO/18/201 1 A~ Gerness CE-7953 CP-GW W/ MULTIPLE LENSES OF SAND AND LARGE BOULDERS SW SP SM SC SW SP SM SC ORG ML CL OL HH CH OH DEPTH TO GROUNDWATER DATE 6' 10/14/11 5.5' 10/18/11 5.5' 10/21/11 SEE ATTACHED SITE PLAN DATE READING CLOCK NET TIME WATER LEVEL NET DROP TIME (MINUTES) READING (INCHES) .... ,tx~.s ........ ~¢¢~ ............... BB%0~¢B PERCOLATION RATE *<1 (MIN./INCH) PERC. HOLE DIA. 6 (INCHES TEST RUN BETWEEN 4 FT. AND 5 FT. A FOUR HOUR PRESOAK WAS PERFORMED: []YES SOILS LOGGED BY: JODY MAUS PERCOLATION TEST PERFORMED BY: COMMENTS: *REQUIRES SAND FILTER [~] NO JODY MAUS PERFORMED BY GEG, Ltd. I, JEFFREY A. GARNESS, CERTIFY THAT THIS WAS)PER¢ORMED IN ACCORDANCE WITHALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS' DATE: GARNESS ENGINEERING GROUP, Ltd. o Rs~.,cs TEST HOU SM (LOAM W/ROOTS) GP-GW W/ MULTIPLE LENSES OF SAND AND LARGE BOULDERS SOIL CLASSIFICATIONS GW GP GM GC SW SP SM SC ORG ML CL OL MH CH OH DEPTH TO DATE GROUNDWATER SEEP @ 10' 10/14./11 DRY TO 11' 10/18/11 DRY TO 11' 10/21/11 SEE ATTACHED SITE PLAN DATE READING CLOCK NET TIME WATER LEVEL NET DROP TIME (MINUTES) READING (INCHES) .......... ~x~.S ........... x~\x~s,, ~- ' ........ ........ ,S ~0 ¢.o~ " ~,~5o?'~p , ' .......... PERCOLATION RATE *<1 (MIN./INCH) PERC. HOLE DIA. 6 (INCHES TEST RUN BETWEEN 4 FT. AND 5 FT. A FOUR HOUR PRESOAK WAS PERFORMED: [--~YES SOILS LOGGED BY: JODY MAUS PERCOLATION TEST PERFORMED BY: COMMENTS: *REQUIRES SAND FILTER I~ NO JODY MAUS PERFORMED BY GEG, Ltd. I, JEFFREY A. GARNESS, CERTIFY THAT THIS WAS/ PEI~FORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE: ~lOIZI GARNESS ENGINEERING GROUP, Ltd '" '"& ~0 LEGAL DESCRIPTION: FIRE LAKE s/g; T~OT A OF LOT 1 ~~A, ~arnes~.-' ~ ~j ORGANICS TEST HOLE ~lJ 'q~~ s~ (LOA~ W/ROOTS) SOIL C~SSIFIOATIONS Gw w/ POCKETS OF SW POSSIBLE BEDROCK AT BOTTOM OF HOLE GW ~ ORG GP ML GM CL GC OL SW NH __ SP CH SM OH SC DEPTH TO GROUNDWATER DATE DRY 9/29/11 DRY 9/30/11 DRY 10/6/11 SEE ATTACHED SITE PLAN DATE READING CLOCK NET TIME WATER LEVEL NET DROP TIME (MINUTES) READING (INCHES) ~.¢%% 5~,~ \" .......... "... ' ~¢¢¢ xO ................ .......... ~o~CB ,,~ .................... ' ,',' ........... PERCOLATION RATE *<1 (MIN./INCH) PERC. HOLE DIA. 6 (INCHES) TEST RUN BETWEEN 4 FT. AND 5 FT. A FOUR HOUR PRESOAK WAS PERFORMED: J--JYES SOILS LOGGED BY: dODY MAUS PERCOLATION TEST PERFORMED BY: COMMENTS: *REQUIRES SAND FILTER J~NO JODY MAUS PERFORMED BY GEG, Ltd. I, JEFFREY a. GARNESS, CERTIFY THAT THIS WAS. PEF~FORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE: IC)/ZI,/]1 GARNESS ENGINEERING GROUP, Ltd. CONSULTANTS & GENE~ONT~CTORS r~ ITEST HOLE BEDROCK JUST BELOW SURFACE. RIDGE OF BEDROCK BETWEEN PROPOSED HOUSE LOCATION AND TEST HOLE #1. SOIL CLASSIFICATIONS GW GP GM GC SW SP SM SC ORG HL CL OL HH CH OH DEPTH TO GROUNDWATER DATE SEE ATTACHED SITE PLAN DATE READING CLOCK NET TIME WATER LEVEL NET DROP TIHE (MINUTES) READING (INCHES) NO PERCOLATION TEST - SHALLOW BEDROCK PERCOLATION RATE - (MIN./INCH) PERC. HOLE DIA. - (INCHES TEST RUN BETWEEN - FT. AND - FT. A FOUR HOUR PRESOAK WAS PERFORHED: E]YES SOILS LOGGED BY: JODY MAUS PERCOLATION TEST PERFORHED BY: COHHENTS: SITE UNSUITABLE FOR ONSITE SEP~C SYSTEM. [] NO PERFORMED BY GEG, Ltd. I, JEFFREY A. GARNESS, CERTIFY THAT THIS WAS ,PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE: I~/'Z,I/iI