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Home My WebLink AboutCOUNTRY LANE ESTATES General Information DEPT. OF ]ENVIRONMENTAL CONSERVATION ANCHORAGE DISTRICT OFFICE 3601 C STREET, SUITE 322 ANCHORAGE, ALASKA 99503 July 3, 1991 WALTER J. HICK£L, GOVERNOR 563-6775 RECEIVED Mr. Wiley W. Wilhelm LCMF, Limited 139 East 51st Avenue, Suite B Anchorage, Alaska 99503-7205 JUL 8 1991 lViun[cip~ii~y o~ Anchorage Dept. Health & [.] LIi~lall Services Subject: Country Lane Estates Community Septic System, Anchorage, Alaska, ADEC Project Numbers 9221-DVWV-001; System Upgrade Review Dear Mr. Whilhelm: This is in response to your submittal, received in this office on June 19, 1991, in which you covered the proposed upgrades to the above-referenced community wastewater disposal system. I have reviewed the submitted proposal and find that the Department has no objections regarding the work on the wastewater disposal system. There is a concern with the installation of a sump drain adjacent/down gradient from the soil absorption system. It appears that the sump is designed to only collect storm water runoff from the soils covering the soil absorption system. If this is the case, under 18 AAC 72.600, I required to request engineering plans, plans submitted under the stamp of a Professional Engineer. Being realistic, the already submitted plans will be sufficient to cover the requirement for engineering plans. However, before I can issue plan approval the following information will need to be submitted: 1. The elevation of the lowest part of the soil absorption system and the bottom of the sump. 2. , The type of soils in which the storm water will percolate into once leaving the sump. This information is needed to ensure that the possibility of short circuiting the soil absorption system is kept to a minimum. If you have any questions, please do not hesitate to contact me. Sincerely, Environmental Engineer cc: John Smith, DHHS, KKK/skpf MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION ENVIRONMENTAL HEALTH CASE REVIEW WORK SHEET ',, [~] PLATTING BOARD [] PLANNING & ZONING NAME Country Lane Estates Subdivision (clUster housing development) OE FOR MEETING OF CASE REVIEWER'S COMMENTS: [] PUBLIC WATER NOT AVAILABLE TO PETITION AREA [] PUBLIC SEWER NOT AVAILABLE TO PETITION AREA Municipality of Anchorage MEMORANDUM DATE: TO: FROM: SUBJECT: ~-~2) ~.~3) (4) (5) (6) (7) (8) (9) (10) August 3, 1982 Planning Department Healt~nd Environmental Protection ~6~85.- ~ountry Lane Estates Subdivision ~ ..................~(cluster housing development) Comments based on pre-application submitted; Soils percolation rate - 150 square foot per bedroom, however, this department has not received soils logs or percolation data from the engineer to support this. 2.1 dwelling units per acre are in the guidelines of this proposal Address ~ number of bedrooms per dwelling. Baseball diamond to be moved out of leachfield area. Homeowner agreements addressing escrow account ~f~replacement~ repairs. Address water source(community/~4~c=) 91-0~0 (5/78) 1 ~LiNIClPALITY OF ANCHORAQE DF'PT, OF I~,E/,1.TH ~ JUL S 0 1982 RECE!. ED PROPOSED CLUSTER HOUSING DEVELOPMENT FOR COUNTRY LANE ESTATES SUBDIVISION PRE-APPLICATION SUBMITTAL PER ANCHORAGE MUNICIPAL COD~ 21.45.190 $ 6 4 8 5 SEP ~. 1982 VICINITy MAP EXISTING SITE CONDITIONS Legal Description: Section Lot 5 (Excepting E. 660') located in SW~ Section 4 T12N R4W S.M. Site area is approximately 21 acres. Description of Site Conditions: Vegetation: The site is presently wooded with primarily poplar and birch trees averaging about 6" in diameter and occasional spruce trees. Topography: Rolling Hills characterize the area. This site contains the end of a small hill near the north end with an average slope of approximately 17%. The ground then falls to the south to a valley which bears in a north-west and south-east direction. Continuning to the south, the land again rises with slopes up to 40% encountered near the south west corner of the site. Land Use: The existing land use to the east and south west is residential An existing gravel pit is located to the south and south east of this site. The zoning of these areas as well as this site is R-iA. The property to the north is Airport Property and Kincaid Park is located to the west. These lands are zoned PLI. Soils: Two primary soils groups are located within this parcel with Caswell silt loams in the valley through the center of this site and the Toumi series silt loams on the slopes. Both of these soils are generally well-drained with substratums consisting primarily of sands with some sandy gravels~ . Soils percolation tests conducted, on the underlying soils show a rating of 150 S.F. per bedroom and less for purposes of on-site drain fields. PROPOSED DEVELOPMENT The proposed development of this site would be done under the Cluster Housing Concept. Under this concept, living units are clustered in a group leaving the remainder of the site for other amenities such as open space and recreational facilities. This development would consist of 44 single family residential lots located in the northern one-third of the 21 acre site. Pertinant features of the proposed development are as follows: Zoning - R-iA Density - 2.1 dwelling units per acre. Open Space - 14 acres or 66% of total site. The open space will include such amenities as a ball field, sleding hill, trails and a recreational vehicle storage area. Buffer Zones - A buffer zone consisting of screening easements with natural vegetation would remain around the entire residential portion of the development. Water & Sewer - Water would be provided by a community water system with the well located in the open space area south of the residential area. Sewer would also be a community sewer system with collection at a septic tank and an on-site drain field for effluent. The drain field would be located directly south west of the lot areas in the area cleared for the ball fie~ld. This area is sufficiently large to provide for the original drainfield plus at least 2 additional if ever needed in the futhre. Both water and sewer systems would be approved by State and local Environmental authorities as required and would be operated under a Homeowner's Association. PERFORMED FOR~ ' LEGAL DESCRIPTION; 2 3 4- 5- 6- 7- ~0- 12- 13- 14- 17 2O COMMENTS MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L. Streot, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATtQN TEST PERCOLATION TEST DATE PERFORMED. SITE PLAN WAS GROUND WATE~ ENCOUNTERED? IF YES, AT WHAT DEPTH? Reading Date Gross Net Depth to Net Time ' Time Water Drop PERCOLATION RATE (minutes/inchJ TEST RUN BETWEEN FT AND L. uP, I i 1<,~.~4 li',l~ Er, iGii',iEER$ & ASSOCiAi'E8 PERFORMED BY 212 East International Airport Rd~ CERTIFIED BY: ¢~ .Suite 204 Anchorage, Alesk~ 99502 MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L, Street, Anchorage, Alaska 99501 264-4720 SOILS LOG PERCOLATION TEST PERCOLATION TEST PERFORMED FOR LEGAL DESCRIPTION: I 2 7 12 13- 'i4- 18 20- DATE PERFORMED: SITE PLAN I WAS GROUND WATER ENCOUNTERED' IF YES, AT WHAT DEPTH? Dross Net Depth to Net Reading Date Time . . Time Water Drop '3 ' /" "'" PERCOLATION RATE '~7- ~"" ~' t',~) (minutes/inch) TEST RUN BETWEEN . FT AND -- FT COMMENTS PERFORMED BY: 2.]2 East ntemational Airport Rd, CERTIFIED BY: ~o, DATE: Suite 204 Anchorage, Alaska 99502 SOILS LOG PERFORMED FOR:" LEGAL DESCRIPTION: .: 1 2- 3 4 5 6 7 8 9- MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION [] 825 L, Street, Anchorage, Alaska 99501 264-4720 SOILS LOG-- PERCOLATION TEST 11 12 13 SLQPE WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? PERCOLATION TEST DATE PERFORMED:' %' ~--~ - ~. SITE PLAN : 14 16- 17 20- Reading Date Gross Net ., Depth to Net Time Time Water Drop PERCOLATION RATE (minutes/inch) COMMENTS TEST RUN BETWEEN FT AND ' FT g. ulxlH¢,~,t.hil~ Ei~iGiNEER$ & ASSuCiATFz$ PERFORMEOBY: ~'~ Ecl.t ,Qtematio~al Air~o~ .d. -'~RTIFIEDBY: ~R~ ~_O.~DATE: Suite 204 PERFORMED FOR: LEGAL DESCR PTION: 2 S 4 5 6 7- 8- 9- 11 12 13 14 15 16- 17 18- 19- 20- COMMENTS SOILS LOG MUNICIPALITY OF ANCHORAGE DEPA F[TMENT OF HEALTH AND ENVIRONMENTAL PROTECTION ' [] PERCOLATION ' .-~ TEST · 825 L, Street, Anchorage, Alaska 99501 284-4720 ." SOILS LOG - PERCOLATION TEST . ,' ':' .. ,, '(7 WAS GROUND WATER SL DEPTH? · Reading Date Gross Net Depth to' Net Time . Time Water Drop ',..ulxhl,c,~.,..~miG ENGiNEEkS & ~ PERFORMED BY: 219 Easl In,ematio,al Airport Rd, ~'~RTIFIEDBY: ~q[~p~_ ~-*~::t_~_~_~__ DATE: SI~/~. Suite 204 Anchorage, Alaska 9~502 MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L, Street, Anctmrage, Alaska 99501 264-4720 SOILS LOG-- PERCOLATION TEST [] SOILS LOG PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: W. 10 11 12 13 WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? DATE PERFORMED: SITE PLAN 14 15 16 17 18 19 20 COMMENTS Reading Date Gross Net Depth to Net Time , - Time Water Drop PERCOLATION RATE ~ t~.* [minutes/inch) TEST RUN BETWEEN ~'.'~1~ FT AND ~ FT PERFORMED BY: 212 East Internalional ·Airport Rd~ Suite Anchorage, Alaska 99502 L. ON H~CiiNG izixiGiixiEER$ & ASSuCiAYE$ CERTIFIED BY: DATE: PERFORMED FOR: =~ ' LEGAL DESCRIPTION: 8 9- 10 13 15 20 COMMENTS MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L. Street, Anchorage, Alaska 99B01 264-4720 SOILS LOG- PERCOLATION TEST · SLOPE (K\\'~% IF YES, AT WHAT SOILS LOG WAS GROUND WATER ENCOUNTERED? PERCOLATION TEST ...,- DATE PER FORMED: ~" ' ~ 2-5; - ~'Z.., ,' SITE PLAN Reading Date Gross Net ., Depth to Net Time ,. Time - Water Drop PERCOLATION RATE (minutes/inch) TEST RUN BETWEEN ~T AND FT uOiq'~'t(~.C'~i~'4G Ei~iGii,.iFEP, S & A$SOCiA~;$ PERFORMED BY: 2]0 East International Airpod' Rd~ ., Suite 204 Anchnrao~. Ala~-~ OQR(39 MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L, Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST ' Iq. SOILS LOG , ~i~ PERCOLATION TEST LEGAL DESCRIPTION: 1 2 3 4 5 6- 7- 8- 9- SLOPE DATE PERFORMED: SITE PLAN 10- 11 12 13 14 15 16 17- 18- 20 COMMENTS WAS GROUND WATER S ENCOUNTERED? ~ ~ OL IF YES, AT WHAT DEPTH? Reading Date Gross Net Depth to Net Time Time Water Drop Ralph ~, Jokela PERCOLATION RATE ' "~J,~¢~ (minute~/inch) TEST RUN BETWEEN Z~ ET AND , ~ FT PERFORMED BY: 212 East International Airport Rd, CERTIFIED BY: .Suite 204 DATE: '~ !'~--' J~ MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L, Street, Anchorage, Alask~ 99501 264-4720 SOILS LOG - PERCOLATION TEST · ,,~ PERCOLATION TEST PERFORMED FOR; '~-.~::~ ~'~O ~.J'¢'3.~ LEGAL DESCRIPTION: 1 2 '9- SLOPE DATE PERFORMED: ~--~--~"~ SITE PLAN 10- 11 12 13 14 15 16~ 17- 18- 19 20 WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop I PERCOLATION RATE "~ *~.~ (minutes/inchJ TEST RUN BETWEEN ,~ FT AND ~7 FT COMMENTS PERFORMED BY: 212 East International Airport Suite 204 Anchorage, Alaska 72.008 (6/79) MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L. Stroot, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST ,~ PERCOLATION · TEST PERFORMED FOR: LEGAL DESCRIPTION:· ~1~1'''' ~:~ 4 9 10 11 12 13 DATE PERFORMED: SLOPE SITE PLAN WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? 14 15 16 17 18- 20- COMMENTS Reading Date Gross Net Depth to Net Time Time · Water Drop PERCOLATION RATE z~ ~ ~-~ (minutes/inch) TEST RUN BETWEEN 4 FT AND ,(,,~ FT ',-.UNt£<ALi'iNG ENGINEERS & PERFORMED BY: 212 East Inte(national Airpor* Suite 204 ' ' A~chorago, Alaska 99502 72-008 (6/79) ,o E