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Home My WebLink AboutPROSPECT HEIGHTS #3 Block 9 Lots 4A & 4B Plat# 92-112 S-9117 mvqlvIrAkl I ! Ur IIiJlI~VlNJA~jP- FCONOMIC DEVELOPMENT AND PLANNING P.O. Box 195650 Anchorage, Alaska 99519-6650 PRELIMINARY PLAT APPLICATION OFFICE USE REC'D BY: VERIFY OWN: Please fill in the information requested below. Print one letter or number per block. Do not write in the shaded blocks. Vacation Code · S .*_911~ 1991 2. Tax identification No. NEW abbreviated legal description (T12hr R2W SEC 2 LOT 45 OR SHORT SUB BLK 3 LOTS 34). I~1o1~11~1~1 I~1 PI~t I~l~kt I~1 I~t~1~1~1~1~- l~kl~l~l~l~d~l' I~I~P¼1 ~1~1~1 I~1 I I I I I I I EXISTING abbreviated legal description (T12N R2W SEC 2 LOT 45 OR SHORT SUB BLK 3 LOTS 34) full I~al on back page. I~1~1~t I~1'1~1~ I~l IA~,~I~I~I~I~ ~1~1~ 1~1~1 l,~t~1~11~11 I I I I II I I I I I/'1 Petitioner's Name (Last - First) 6. Petitioner's Representative Petition Area 8. Proposed 9. Existing Acreage Number Number Lots Lots 10. Grid Number 11. Zone 12. FeeS 13. Community Council B. I hereby certify that (I am)(I have been authorized to act for)theownerofthe property described above and that I desire to subdivide it Jn .conformance with Chapter 21 of the Anchorage Municipal Code of Ordinances. I understand that payment of the basic subdivision fee ~s nonrefundable and is to cover the costs associated with processing this application, that it does not assure approval of the subdivision. I also understand that additional fees may be assessed if the Municipality's costs to process this application exceed the basic fee. I further understand that assigned hearing dates are tentative and may have to_..b.e.postponed by Planning Staff, ~ard, Planning Commission, or the Assembly due to a.~.~i~/_~e/asona, ~(~-~---~ ~ Plaffing Signature /'~ ~ 20-003 (Rev 6/89)MOA-24 *Agents must provide written pr(~;3~or aut~rl~ation. ' MUNICIPALITY OF ANCHORAGE MEMORANDUM DATE: August 27, 1991 TO: Department of Economic Developm~n~ and Planning Zoning and Platting THRU: FROM: SUBJECT: John Smith, P.E., Program Manager, On-site Services Department of Health and Human Services ~3~.~ Susan Oswalt, On-site Services ices Department of Health and Human Request for Comments on Subdivisions August 30, 1991 " The Environmental Services Division, On-site Services Section, of the Department of Health and Human ServiCes has reviewed the following cases and has these comments: ~ f .~ ~ ~ S-9114: Lot 9A Clearview Subdivision . ~ We recommend this plat be d~ied~.~ Currentiy~'~ -~ ~.~i~i~ neither lot can meet technical requirements fbr~-f. on-site wastewater permits under AMC 15.65 due ..... to the lack of reserved disposal areas and the steep slopes requiring setbacks. Even in combination, these lots lack the required amount of area less than 25% slope and required distance from lot lines, drainages, and edge of slope. There is no information on water availabilit~ ~ S-9115: Lot lB Moorehand Subdivision ~__~ Provide copy of ADEC CertifiCa'~-~b opera~ a public well prior to final approval. S-9116: Lots 9A, 9B Block 10 Fist Additign Alaska _ Industrial Subdivision Both lots must be served by public sewer and water. S-9117: Lots 4A, 4B Block 9 Prospect Heights Subdivision The original soil test was performed in 1977~ ' - there is no monitoring tube for verification 30f ' [ groundwater table. We request that a new tu~ be installed, and monitoring be performed thrb~K~[~[ a high water period.&/~e require information~On water availability. The applicant has failed to. provide information on wells and wastewater dispoSal~ systems within 200 feet of the development. We also require that the applicant show which provision for reserved disposal area will be utilized. SO/ljm BRUST & ASSOCIATES Engineers - Planners - Surveyors 1610 Dimond Drive Anchorage, Alaska 99507 (907) 562-7878 NOV 1 ~,~pr. i.,e,~l~., & l-i'd:man Services Municipality of Anchorage Department of Health and Human Services On-site Services 825 "L" Street Anchorage, Alaska Attn: Susan Oswalt October 28, 1991 RE: Prospect Heights Subdivision, No. 3 Block 9, Replat of Lot 3A Dear Susan, This will respond to your review comments of 10-3-91. The following should provide the required information. A. The enclosed soils logs have been revised to include the requested format for perc tests. B. Water monitoring was done on the dates the soil logs were taken, (9/18/91 & 9/20/91), on 9/28/91, and on 10/6/91. No water was encountered during these times. The static level in the well on Lot 3A , which is located on ground which is about 20' higher in elevation than the proposed soil absorption system, is 47' below casing height. The lake to the northwest has a level about 44' below the ground level at the proposed soil absorption system. These observations were made at the end of a wet summer. The foregoing would tend to indicate that ground water would not be a problem to the proposed on-site system. However the soils log which was done on June 8, 1977 for the existing dwelling on Lot 3A showed a ground water level of 7.5' This would indicate that ground water levels vary widely within short distances, or that they fluctuate significantly, or that they were higher in the past.. It may be advisable to monitor the test holes during a high water period to ascertain whether a curtain drain will be needed to lower ground water levels at the proposed trench. A bed or mound system could also be considered as alternatives at that time. C. Ail applicable details within a radius of 200' have been shown on the enclosed drawing. D. The reserved area has been shown on the enclosed drawing. Development of the adjacent properties will not be adversely impacted by construction of the proposed system, as distances to adjacent features are in compliance with applicable requirements. The closest feature that could be affected is the existing lake to the northwest, which is about 190' from the proposed on-site system. The separation distance for the proposed well impinges a distance of 90' on Lot 7, Block 2. This lot is over 2 acres, and is presently undeveloped. There is ample room for development as construction will probably occur at the high ground adjacent to Prospect Drive. Susan Oswalt October 28, 1991 Page 2 It is recommended that the replat be approved. It is further recommended that the test holes be monitored over a high ground water level period, and that a permit for the on-site system be issued if no ground water is noted within 4' of the bottom of the proposed trench. Sincerely, Stanley Brust, P.E. cc Gary Stromberg Jerry Weaver Robert Eo Johns, Jro LAKE DRAINAGE EASEMENT s T .-- ~ I ' cPROPOSED'~ 10' UTILITY EASEMENT / ~' ~,~2'°~~ / k , ¢ ' I ..... *'""f ~ ~oo :~:~' ~ ' '/~ ~~ ............ ~.~.. ~: ~' I ~F'"'7:8~ u~,UTY ~AS~SNZ I /~ % F~ FC F ~' % ' // ~ BEDROOM DWELLING. '" ..... [ ~. SEPTIC TANK CAPACITY IS ......... r ~~ 1250 GALLONS. NOV 1 ~ h ~ ~LL M~ERIA~ TO CONFORM ~h~:~;:,'~Hum~n~_. ~ ~_, "~ % 4. THERE ARE NO OTHER WELLS, ~ ~ ~ TANKS OR OTHER FEATURES ~ ~ A' O~ WITHIN 200' OF THE PROPOSED ~ .~v % ~¢~ SEPTIC SYSTEM OR WELL, ~I¢' % ~C~ EXCEPT AS SHOWN ""*~' ~" BRUST ~ ASSOCIATES ~cx~u ~Y; s~ PROPOSED ON-SITE SEP~O .A~; m/m/~ ENGINEERS-PLANNERS-SURVEYORS SYS~M AND ~LL SCALE: ~"=~00' 1610 DIMOND DRIVE (907)562-7878 LOT 4B, BLOCK 9 ~' ANCHORAGE, ALASKA 99507 JOB NUMBER; g114 PROSPECT HEIGHTS No. BRUST & ASSOCIATES Engineers - Planners - Surveyors 1610 Dimond Drive Anchorage, Alaska 99507 (907) 562-7878 September~3~, 1991 Municipality of Anchorage Department of Health and Human Services On-site Services 825 "L" Street Anchorage, Alaska RECEIVED * SEP 3 0 199t Iviu,'uc paMy ot ,%,,cnorage Dept. Health & Human Services RE: Prospect Heights Subdivision No. 3, Block 9, Replat of Lot 3A This letter and attachments is primarily to provide required information to support a proposed replat of Lot 3A into Lots 4A and 4B. A secondary purpose is to accompany a permit application for an on-site waste disposal system and well at the proposed Lot 4B, once the proposed replat is approved. The following are attached. 1. Drawing of proposed on-site systems, and separation distances. 2. Soils log and percolation test results. 3. Trench design calculations. 4. Well log for Lot 3A (Formerly Lot 3) 5. Inspection report for Lot 3A 6. Contours of the area. Development of the adjacent properties will not be adversely impacted by construction of the proposed system, as distances to adjacent features are in compliance with applicable requirements. The closest feature that could be affected is the existing well on Lot 3A, which is over 200' from the proposed on-site system. Slopes on this lot are moderate, and average about 12% at the proposed on-site system. Both the replacement and the original system trenches fitted within the 30' radius circles around the test holes. Water appears to be available in this part of the hillside. The well log for lot 3A shows that it provides 10 gpm at a 71' drawdown. Discussions with neighbors disclosed no problems with water supply. cc Jerry Weaver Robert E. Johns, Jr. It is recommended that the replat be approved. It is further recommended that a permit for the on-site system be issued once the replat for Lot 4B is approved. Sincerely, ,.<¢:. '~' ~"~--"~ .~' ' ..... [~'~'SOI LS LOG MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L. Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST [Z~'~ERCOLATION TEST PERFORMED FOR= ' LEGAL DEscRIPTION: 1 2 3 4, 5 6 7 8 9 10 11 12 13- 14- 15- 16 17 18 '19. .20 SLOPE SITE PLAN ' 49T--H NO. 986-E WAS GROUND WATER ff~ ~_ ENCOUNTERED? E IF YES, AT WHAT DEPTH? Reading Date Gross Net Depth to Net ,' ( Time ~.~. Time /Cf/y/ Water ~ Dr°p/3~ ......................... ~ , .... ~ ...... ~ ........-~ ~.5~.- ..... ~_. ',,,,~ PERCOLATION RATE · TEST RUN BE~;WEEN COMMENTS ~ O j~;'¢,~--~'..~ ~:~t./~/(-/~. /~o____.~ ~ ~ ~ ~ PERFORMED BY: ~, ~5/ //" ¢ . . (minutes/inch) ~ FTAND q FT / 72-008 (6/79) · MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L. Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST '" ERCOLAT,o. TEST DATE PERFORMED: ~ SLOPE SITE PLAN " 10- 11 12 13 14 15 16 18- NO. 986-E WAS GROUND WATER ,~ ~_ ENCOUNTERED;' O P E · IF YES, AT WHAT DEPTH;) Reading Date Gross Net De~3th to Net Time 2~:~/C~ Time Water Drop 20 ,m ' PERCOLATION RATE ~,~ ~ TEST RUN BETWEEN COMMENTs ~'~ . ~:;:~ ~-~ ~ ~ ~t.~//~ / ,~?,~, ~,~'-~ .~. J CERTIFIED BY: {minutes/inch} FT AND '~/' ~ FT 72-008 (6/79) Certified Well Gary Stromberg Loeatio_~....:.-....%..~. .................. ~..:...p.~ ......... ~.~.:. ................................. July, 1977 ' Date completed ........................................................................................................... 130' ' ' ": , ' ". - - - '-- Depth o£ well .................................................... :..; ................. : .................................... Size o£ casing ..... 6" ID '- '-. -'. '" .":" ":. ' ' Distance to ssater ........................................................................................................ 13.2 ' Distance to water while pumping ............................................................... at rate o£ 360 ' ' ............. : .............................. gallom per hour. Description of Format..ioo ,::. '.- from Water gravel Gravelly till-w/wet'-- stre~aks .... -.::-. >::: --- Water gravel .... --:-.~:-' Dry gravelly .ti'l~.'::::.:'- ,36 37 "' ¢8 tO 5 -37 $8 130 I certify the above true and correct. , - · ' - " " d DOTTEN DRILLING' CO. John's Road SPENARD, ALASKA We advise you to attach this certificate to your deed. MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION Pouch 6-f;~O, Anchorage, Alike. 99502 SOILS LOG- PERCOLATION TEST PERFORMED PERCOLATION TEST 1 4 5 7 8 10 11 12 13 15 16 17 19 2O ~ITE PLAN b t.~ O Date Gross N~! Do~th to Net Time Time Water Orop PERCOLATION RAT6 TEST RUN BETWEEN , GREA,ER ANCHORAGE AREA BOR..dGH Department of Environmental Quality 3330 C Street Anchorage, Alaska 99503 INSPECTION REPORT ON-SITE SEWAGE DISPOSAL SYSTEM NAME ~/~J'~ ~,~)'~n¢~'~ ~ MAILING ADDRESS (..~(~,!. ~ PHONE SEPTIC TANK: ~'7~'~ ~/'~' Fo ~ ~_.~ O~ ~4'- NUMBER OF INSIDE LENGTH INSIDE WIDTH ~ LIQUID DEPTH LIQUID CAPACITy'I,,4;~O.GA ~ DRAIN FIELD: DISTANCE FROM WELL~~--~'6' UNDATION ~ NUMBER OF LINES I DISTANCE BETWEEN LINES ABSORPTION AREA ~1'~O DEPTH: TOP OF TILE TO FINISH GRADE I TOTAL LENGTH J NEAREST LOT LINE ~ ~ OF LINES ~l~q ~ lA TRENCH WIDTH~_[~2-IN. TOTAL EFFECTIVE FT. LENGTH OF EACH LINE j ~ i I DEPTH OF FILTER 3 . MATERIAL BENEATH TiLE ion) IN. ABOVE TII-E ~ N, WELL: ,,.~¥ ~ ;., ~k TYPE_ CONSTRUCTION BUILDING NEAREST FOUNDATION , LOT LINE--, CESSPOOL , OTHER SOURCES APPROVED DISAPPROVED NEAREST SEPTIC SEWER LINE , TANK__ REMARKS DEPTH SEEPAGE SYSTEM DISTANCE FROM: SEWER LINE DEPTH: ,..~J PIPE MATERIAL: ~ DIAGRAM OF SYSTEM APPROVED ( DATE , ' -- l G~,.A.B. Please check or fill in the following; 1. Comp~ve Plan -- Land Use Classification Residential Commercial Parks/Open Space Transportation Related 2. Comprehensive Plan -- Land Use Intensity ~ Special Study 3. Environmental Factors (if any): a. Wetland 1, Developable 2. Conservation Marginal Land Commercial/Industrial Public Lands/Institutions Dwelling Units per Acre Alpine/Slope Affected b. Avalanche c. Floodplain Alpine/Slope Affected Ind~Jstrial Special Study Private Wells Community Well Public Utility Private Septic Community Sys. Public Utility F. Checklist 30 Copies of Plat Reduced Copy of Plat (8'/2 x 11) Certificate to Plat Fee Topo Map 3 Copies Soils Report 4 Copies Aerial Photo Housing Stock Map Zoning Map Water: Sewer: Waiver 3. Preservation d. Seismic Zone (Harding/Lawson) D. Please indicate below if any of these events have occurred in the last three years on the property. Rezoning Case Number Subdivision Case Number Conditional Use Case Number Zoning Variance Case Number · Enforcement Action For Building/Land Use Permit For Army Corp of Engineers Permit E. Legal description for advertising, M ~,...~,~.2.,..,~.~',.. x.... _......~ ~ .. ,xq, . · x,' - ETHEL 2 PROSPECT ADDN. NO. NOTES 2 / DRAINAGE EASEMENT CENTERLINE DELTA LOT ~A &4.B BLOCK 9 pROSPECT HBGldTS SUbD., ADBmON NO,5 A RESUBD~ON OF LOT 3A, BLOOK B 2 ACCEPTANCE Of DEDICATION Anchorage hereb*j occepts for pubfic uses and fo~ p~hlic purposes VICINITY MAP CERTIFICATE OF OWNERSHIP AND DEDICATION: NOTARYS ACKNOWLEDGEMENT= / / Subscribed and sworn before me this doy of -~JoV~m PLAT APPROVAL: Plot approved by the Borough Plotting Authority this DTIO0134t P~OSPECT I-IEI~tYT$ SM~DIVI$/ON ,4DDIT/ON NO. $ ETHEL \ 872 S LOT 5.03 ACRES £ LEGEND CURVE DATA CHART NOTE ANy FUTURE DEVELOPMENT OF THIS LOT DRAINAGE EASEMENT CENTERLINE SU~RRVEYOR~S CERTIFICATE ~ and ~et, or if final completion is assured hy subdivision ogreerce~ I aunicip~l~c [.gin~~. /~' Lot Corners to 5e set by ~,,~,,,;~n/~: ' CERTIFICATE OF OWNERSHIP end DEDICATION We h~reby certify that ~ve ~ld tile hereto ~ecJfied propert.~ mlerest in the PLAT APPROVA~~L ~ ABBoTTi LOOP ROADI LOT 3A, BLOCK 9, PROSPECT HEIOHTS SUBD., ADDITION NO. 5