The URL can be used to link to this page

Home My WebLink AboutT12N R3W SEC 25 S2 NE4 SW4 NE4 & SE4 SW4 NE4 #2P81-77 ~:', , ~ MUNICIPALITY OF ANCHORAGE · ~ DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION ., ENVIRONNIENTAL HEALTH CASE REVIEW WORK SHEET · [] PLATTING BOARD [] PLANNING & ZONING CASE NUMBER NAME ZP-81-77 A request to rezone approx. 15 acres from DATE RECEIVED September 2, 1981 R-8 to R-6. COMMENT TO PLANNING BY September 9, 1981 FOR MEETING OF CASE OF [] PUBLIC WATER NO.__.~T AVAILABLE TO PETITION AREA E~ PUBLIC SEWER NO._~T AVAILABLE TO PETITION AREA R EVIEWER'S COMMENTS: 71-014 (Rev. 2~78) r-BENJAMIN Rd TALISMAN R-6 5 SULTANA ' ORIVE EANNE Rd , ~ IX-- .~,,,:'";'~ 1,30 tn Ave r\ J 2 R-8 RETURN CO~h!m:,TS TO: CASE NO. Z? 8l- 77 MUNICIPAL PLANNING D~.P~Rz.'IEH~ zoning and Platting Division Pouch 6-650 .Anchorage, Alaska 99502 request to rezone approximately request to amend Title 21 to 264-4215 MUNICIPALITY OF ANCHORAQ5 DEPT. OF HEALTH & EN~'I~g(~¢~ E NTA L PROTECTION ac_~s _ , SEP 2 1981 RECI IV. FD A request for concept/final approval of a conditional use to permit a zone . A request for au amendment to a conditional use A site plan review for Dr_o.;..~.~._O ,. STANDARD DISTRIBUTIObi (i'ub!ic Projects) Urban Beautification Co;?,lazsszon (o~:dinance Amendments) Hunicipal Attorney's office CASE: ~ g/ -- 77 PETITIONER: REQUEST: TOTAL AREA: ~ILOUTS Mailed Favor Against Unclaimed COMMISSION ASSEMBLY Other ZONING. AMENDMENT APPLICATION Municipality of Anchorage Planning Department Pouc~ ~S~Q... ~ Oats Received Verification o'f ~.ersh?e P.C.P.H. Oats The undersigned hereby applies to the Municipality of Anchorage for a zoning map amendment. Amendment initiated by: Check one (.~) the owner or owners of a majority of the land in the petition area for zoning map amendment ( ) Planning Commission ( ) Assembly ( ) department or agency of the Municipality- specify department II. Description: (use reverse side or additional paper if necessary) Lagaldescriptienofthearearedusstedtoberezoned S 1/~.iN-.E~ 1/4, S~ 1/4. NE 1/4, ~,c_ ?~. T 12 N. g :~ ~ S_M_ end, SE 1/4, S~ 1/4. NE 1/4. Sec ~5 Area (~uare f~or acres) of the petition area ] ~ ~, S~lon 21.20.015 of t~e Zoning Ordinance sp~iflss that the ~ee must be a minimum of 1 acres unless it Is contiguous to a zoning d~stri~ of the same clsssification es that being ,. propo~) ~isflng Zoning Cl~slflcalon: ~-~ ~roposed Zoning Ci~sific~lon: ill, Justification for the rezoning: (use reverse side or additional paper if necssss~.') Explain public need and justification forths rezonlng C~*ea'~fon of= less exoensjve R-6 1~ a~ camoa~ed ~o R-8 lo~s. ~plain the positive eff~ of the use district change on the prope~ and on surrounding pmpe~ ~{ca~Jog of deanna ~oad ~ uppe~ 0eam0und Road giving ~es{den~s of Mountain ShEdows Sub. an al~ema~e ~ou~e to a ma~n ~oad. Theamountofundevelopedlandinthe aneralareahavin theesm districtclasaJflcationes that requested 15 +. AC. (Spendlq~ve V~e~ Het~l~CS #;~ ~ Explain how the proposed map amendment will further rite goals and objectives of the Compral~ensive Plan In the case of map amendments involving small areas, explain how the pu hllc ne~d will be best served by changing the use classification of the described property es compared with other sveiledleproperty i~/A due to the 1at*os a?ea to be rezoned V. Material Submitted.' (~()maps ( )photographs ( )~essibilityreporta (X)otfier(specify,t $ofl ~eoo~.t I understand that payment of the fee(s) specified Js to defray the cost of handling and Investigation of this application and the costs of the necessary hearings by the Planning Comrnission and Municipality of Anchorage Asssmbly, and that payment of these fee(s) does not entitle me, nor does it assure approval of this application, and that no refund of these fees will be made. I h~)reby affirm that the information submitted herein is true and correct to the best of my knowledge. I also affirm that I am the true and legal Property Owner (or the Authorized Agent thereof) for a majority of the property subject herein, PRINT PETITIONER'S NAME SIGNATURE(S) OF THE OWNER(S) OF A M,~JOFIITY OF THE LAND IN PETITION AREA' SRA bOX 1630-E Anchorage,Alaska SIGNATURE bF AUTHORIZED AGENT" SRA box 1630-E Anchor'a~e ~ Alaska DATE 274-9517 PHONE NO. 274-gB17 PHONENO. August 5, 1981 Mr. Ron Clark 4tl W Northern Lights Anchorage, Alaska Re: SOILS INVESTIGATION OF 15 ACRE PARCEL OFF UPPER DE ARMOUN ROAD Dear Mr. Clark: On July 24 and July 25, 1981 a soils investigation was made of your property, the S½, NE¼, SW¼, NE¼, SEC 25 T 12 N, R3W, S.M. and SE¼, SW¼, NE¼, SEC 25 T 12 N, R3W, S.M. A track mopnted rotary auger drill rig. from Denali Drilling Company was used to bore four (4) test holes. Visual soil classifications and soil togs were made for each test hole. Percolation tests were run on each test hole. This soils investigation was undertaken to determine the suitability of this parcel of land to support individual water and wastewater systems for residential R-6 development. Attached please find the soils report and findings. If I can be of any further assistance in the project please fell free to contact me. Very truly yours, John T. Lovett ENGIN'JBE~TNG CO~ SOILS INVESTIGATION OF 15 ACRE PARCEL S½, NE~, SW¼, NE¼, SEC. 25, T 12 N, R3W, S.M. and SE¼, SW¼, NE¼, SEC. 25, T 12 N, R3W, S.M. By: John T. Lovett, P~E. August 5, 1981 SOILS INVESTIGATION OF 15 ACRE PARCEL S½, NE¼, SW¼, NE¼, SEC. 25, T 12 N, R3W, S.M. and SE¼, SW¼, NE¼, SEC. 25, T 12 Ns R3W, S.M. By: John T. Lovett, P.E. August 5, 1981 PERCOLATION TEST RESULTS TEST GROSS NET GROSS NET PERCOLATION HOLE TIME TIME DROP DROP RATE TEST RUN BETWEEN TH-1 12:33pm O-11" 3:54pm 201 min 2'-8". 21" 10 min/in TH-2 ll:40am 3'-5" 3:52pm 251 min 8'-0" 55" 5 min/in TH-3 12:00pm 1'-3" 3:40pm 220 min 3'-3" 24" 10 min/in TH-4 ll:32am 1'-3" 3:lgpm 227 min 2'-11" 20" 12 min/in For safety, factor use 210 sq.ft, for bedroom for TH-l thru TH-4 August 5, 1981 Mr. Ron Clark 4ll W Northern Lights Anchorage, Alaska Re: SOILS INVESTIGATION OF 15 ACRE PARCEL OFF UPPER DE ARMOUN ROAD Dear Mr. Clark: On July 24 and July 25, 1981 a soils investigation was made of your property, the S½, NE¼, SW¼, NE¼, SEC 25 T 12 N, R3W, S.M. and SE¼, SW~, NE¼, SEC 25 T 12 N, R3W, S.M. A track mounted rotary auger drill rig from Denali Drilling Company was used to bore four (4) test holes. Visual soil classifications and soil logs were made for each test hole. Percolation tests were run on each test hole. This soils investigation was undertaken to determine the suitability of this parcel of land to support individual water and wastewater systems for residential R-6 development. Attached please find the soils report and findings. If I can be .of any further assistance in the project please fell free to contact me. Very truly yours, John T. Lovett · SOILS INVESTIGATION INTRODUCTION The geology of the Anchorage Bowl Hillside Area is the result of several glacial processes. The auailability of ground water and the suitability of on-site wastewater disposal are directly related to the geological structure of the Hillside Area. Materials deposited during the Wisconsin Glaciation period make up most of the surfical sediments in the Hillside area. Most of the unconsolidated glacial sediments contain poorly sorted rock particles ranging in size from clay to boulders. During and following the retreat of the Wisconsin Ice Mass, melting water streams moved great quant- ities of detrital material. In part, the modern topography and surface drainage of the Hillside Area are a direct result of flow of melt water runoff channels. Soil units for the Hillside Area were mapped by H. R. Schmoll and Ernest Dobrovolnt (USGS Map 1-787-A). The upper DeArmoun Road area where this particular parcel of land is located was mapped as slope deposits. The slope deposits consist of intermixed deposits of fresh and weathered bedrock fragments and reworked glacial drift which contains clean and well-sorted or dirty sand and gravel. FINDINGS AND CONCLUSION A series of four (4) test holes were drilled July 24, 1981 using a tracked mounted rotary auger from Denali Drilling. A visual classification of the soils and soil logs were made. (see attached) All holes were augered to a sixteen (16) foot depth. No ground water was encountered in any of the test holes. After drilling, each test hole was filled with fresh water and saturated for a twenty-four (24) hour period. During this time the Anchorage Bowl was rainy and on July 24, 1981, 0.23 inches of rain fell and on July 25, 1981 0.51 inches of rain fell at Anchorage International Airport as reported by the U.S. Weather Bureau. On July 25, 1981 percolation tests were run on each test hole. Three of the test holes, TH l, TH 3, and TH 4 had caved in material from the side walls to the bottom of the holes. The percolation tests were therefore run at a higher elevation than the bottom of the holes. CONCLUSIONS The percolation rates varied from 5 to 12 mnutes per inch and fell within the acceptable range for an on site individual waste disposal system. Provided all other zoning and plattiag require- ments are met the soil conditions o£ this parcel of land could be developed to support an on site waste disposal system. To provide a factor of safety for on site waste disposal it is recommended that 210 square feet per bedroom be used in the design of these wastewater disposal systems. BIBLIOGRAPHY 1) Dearborn L[L., Barnweil W.W. 1975 Hydrology for land use planning: The Hillside area, Anchorage, Alaska U.S. Geological Survey open file report 75-105. 2) "Hillside Wastewater Disposal Study A RepOrt On Data Collection" Artic Environmental Engineers; for the Municipality of Anchorage Planning Depatment; March 1981 -- SOIL 'BORING LOG LO~/~TION ~ll Z,,NF '/-~S<','/~/t4~.' ~/~/a~Jsa'/~/s~oV~//v~,~_~'s~ z~- TEST HOLE NO. / ~c s~u STRATI-I FICATION GENERALIZED SOIL LOG DATE INSPECTOR SAMPLE TYPE REMARKS SAMPLE ANALYSIS NO. DEPTH DESCRIPTION GROUP BLOWS "N" NOTES: MISCELLANEOUS DATA DEPTH OF HOLE _ //7 ' DIA.OF CASING . ~ l, DEPTH OF GROUND WATER DEPTH OF REFUSAL WT. OF HAMMER AVG. FALLOF HAMMER '- SOIL BORING LOG · TE~T HOLE NO. '~ p~o DAT.E INSPECTOR STRATI- :ICATION C~ Z O J ~ o GENERALIZED SOIL LOG z'- L L ' '~o Z ' lop I SAMPLE ANALYSIS NO. DEPTH DESCRIPTION. SAMPLE TYPE & REMARKS GROUP BLOWS NOTES MISCELLANEOUS DATA DEPTH OF HOLE /'g ' DIA.OF CASING ~- ff DEPTH OF GROUND WATER DEPTH OF REFUSAL WT. OF HAMMER AVG. FALLOF HAMMER . SOIL ,BORING' LOG LOCATION .... TEST HOLE NO. STRA'TI- FICATION GENERALIZED SOIL LOG DATE INSPECTOR SAMPLE TYPE & REMARKS SAMPLE ANALYSIS NO. DEPTH DESCRIPTION GROUP BLOWS "N" NOTES' MISCELLANEOUS DATA DEPTH OF HOLE /~ ' DIA.OF CASING $" DEPTH OF GROUND WATER DEPTH OF REFUSAL WT. OF HAMMER AVG. FALLOF HAM MER LO~/~TION TEST HOLE NO. SOIL BORING' LOG' ' / I-STRATI- ~ FICATION GENERALIZED SOIL LOG DATE INSPECTOR SAMPLE TYPE & REMARKS SAMPLE ANALYSIS NO. DEPTH DESCRIPTION GROUP BLOWS NOTES: MISCELLANEOUS DATA DEPTH OF HOLE //-- ' DIA.OF CASING , ~'"' DEPTH OF GROUND WATER DEPTH OF REFUSAL WT. OF HAMMER AVG. FALLOF HAMMER MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L. Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST [] SOILS LOG PERCOLATION TEST PERFORMED LEGAL DESCRIPTION: ~-~ 7L 1 2 3 4 5 6 7 8 SLOPE DATE PERFORMED: SITE PLAN 10- 11- 12 13 14 15 16 17- 18- 19- 20- COMMENTS WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop . ,,~- - ~ '/ I S,,-iL,.i~...~ 0 -- ~ ~.-/b //;z~- -'~'"' 6'~" /~'" ~, ~ -14. //;/5- Z~ ~ ~ 7~/ i ~ u ¢ ~-/~ / z-.'/~ /h~ zo- ~5" .~" PERCOLATION RATE C~ ~ ,'~' ,/~( /~. (minutes/inch) TEST RUN BE'rWEEN ~ ~ '~ '~ ~ j/ ~1 FT AND ~ FT PERFORMED BY: ~'"f~ ~".. ~ [_ ~) b' ~ ~- CERTIFIED BY: 72-008 (6/79) MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 82S L. Street, Anchorage, Alaska 99501 264-4720 SOILS LOG -- PERCOLATION TEST [] SOILS LOG PERCOLATION TEST PERFORMED FOR: /~.0 LEGAL DESCRIPTION: 1 2 3 4 5- 6- 7- 8- f SLOPE -7--/_/~ 7 SITE PLAN 10 11 12 14- 15- 16- 17- 18- 19- 2O COMMENTS WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop I P,~/~--~I //;,~z_ ~ iT" ~ I~.M~-~ IZ:ZZ ~1~ ~Z '/ i~-'/ PERCOLATION RATE TEST RUN BETWEEN PERFORMED CERTIFIED BY: 72-008 (6/79) MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION S26 L. Street, Anchorage, Alaska 99501 264-4720 SOILs LOG - PERCOLATION TEST [] SOILS LOG PERCOLATION TEST PERFORMEDFOR: LEGALDESCRIPTION: ~--~-~ 2 3 4 5 6 ~ I Lt-¥ 7 8 9 10 11 13 14 15 16 17 18 19 20 COMMENTS SLOPE DATE PE.EORMEO: SITE PLAN WASGRO.ND.ATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Reading Date Gross Net Depth to Net Time Time Water Drop ! ~ -/~ //.?'~ ,,~ ¥.~'~ -- PERCOLATION RATE /? /)'/;4///~t( ~ {minutes/inch) TEST RUN BETWEEN FT AND ET CERTIFIED BY: 72-008 (6~79) MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION. 82S L. Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST [] SOILS LOG PERCOLATION TEST PERFORMED FOR: ~-- ('~ LEGAL DESCRIPTION: 1 2 3 4 5 6 7 8 9 DATE PERFORMED: ~ SITE PLAN SLOPE 10 11 12 13 14 15 16 17 18 19 2O COMMENTS /~' WAS GROUND WATER L f S ENCOUNTERED? ~/ (~ ~ P E IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop / ,,~ -/~, I~ :.c'/ d~ :~P~ ~ - 7_ ~-//~ /Z 'z? z~~' ~-'/ ~' ~ ~-/~ ~, ~ Z~- ~'~zg~ ~ ~/ ~ Z '/ PERCOLATION RATE ~,.:~ ~ ~ t~/' ~r~ (minutes/inch) TEST RUN BETWEEN FT AND ~ ~/t PERFORMED BY: ~'-O ~-..~ ~-~:~ L~ ~'~ CERTIFIED BY: 72-008 (6/79)