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Home My WebLink AboutAUDUBON HILLS S-4607 DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION PLATTING OR PLANNING AND ZONING CASE REVIEW CASE R S-4~07 PP~:L]:HINARY PETITION FOR EXCEPTION I$1ON DATE RECEIVED OFH.V. Lounsbur~ & Assoc. for Plat of Audubon HJ11~ P~elJm. a subdivision of Tract B Chickadee Slopes Subdlv located Jn the SE 1/4 Sec 23, T12N-R3W, S.H. Ak, containing ac~es COMMENT TO PLANNING BY ;tober 19~ 197~OR MEETING OF November 3, 1977 COMMENTS: lC WATER NOT AVAILABLE NOI'~AV,'~t:ARL; ~ .ql;RVICE PETITION AREA. OFFICE OF T~-~E O;,IBUD$.~;~AN PO L,'Cl I 6.650 ¢ · : ',.-'tr, & ,",PR 2 i979 RECEIVED March 30, 1979 }~. Bill Thompson ' Lounsbury & Associates P. O. Box 2700 Anchorage, AK 99501 Dear Mr. Tl~ompson: In response to your call to our office on ~4arch 1, 1979, I have researched tile information presented to determine if the Ilealth & Environmental Protection Department has changed their approval requirements for soils conditions in proposed subdivisions. I have been unable to confirm that there is a recent change in requirements. The llealth & Environmental Protection Department has the authority to r~quire percolation tests to verify soils conditions. They are charged with the res~=n~ibillty ~o de,ermine if adequate soils condi~ions exist for develop.- ment in the Anchorage area. The Department has maintained that under certai6 soils conditions, percolation tests are needed to make a determination con- cerning development possibilities. Each subdivision request and each soil test hole must be examined individually to determine what information will be needed to make a decision concerning acceptable soils levels. Additional information was required by the Department prior to the approval of the four subdivisions you mentioned that were similar to Garretson Subdivision. The Department did not require percolation tests on each test ~hole for each subdivision case, but reference was made that deeper ~ res [holes and percolation testing would need to be included for the future. ~S-4607'A~d~bon tlills [and S-4958 McCabe Subdlvisions . ! contacted other firms in Anchorage who submit preliminary subdivision requests and resolve soils conditions with the ilealth & Environmental . Protection Department as conditions of approval. The three other firms indicated they had no reason to believe the Department had recently changed their po/icy or requirements ~oncerning adequate soils data and the need for percolation testing. One of ~he companies indicated that when soils information shows marginal soils level~, provisions for percolation testing are made at that time. March 30, 1979 Mr. Bill Thompson Page 2 If you have additional questions or concerns, please give me a call. Sincerely, Carolyn Tipple Assistant Ombudsperson CT:dab cc: Rolf Strickland, Environmental ][ealth Division Manager John Lynn, Environmental Specialist _$,~mary o.; Action NOvember 3, 1977 . -- ~ 3. ..S-4607 -- Audubon Hills Subdivision, BK 1, Lots - l~mic/pallL.~ of A~eh-ra.~ has .... - ...... i 28 ~o zots. The peri,ion area '- ' -- .e.~y ~o acres from i ~racC .gn~o Birch Road ami H//isid. D~i~.'0caceu n~FCh of Huffman Road and b.e~.~..n The pla~ was approved subject to: ": 1. Resolvin8 u~ili~y easements. [_~/ 2. Resolving drai.oge. · Lt~o 3. EnOs. rio8 into a ,ubdivision ,Sreement £or ' , roses and £or providino t---or-- - in. terior and peripheral ~ ~-~.~__c~_~_a .n.o~_e_ on the pat: that: there be no ~d~ access to Hu£ ._ ? ......... direct vehicLtlar ~O 6. Ialsurin~ that Audubon DRive is centered on the counnon property -4~ line of ~he lots on the northeast corner. 7. Redesi~nins ~he subdivision to relocate the cul-de-sac on the northeast corner'and pullinS the cul-de-sac on ~he northwest to ~he uortheas~ direction. Su~cy o£'Action '.'. November 3, 1977.- ~ ' '; Pase i The pLaC vas approved sublecC co: 1. l~solving utility easements vi. ch ATU. 2. Placins a note on the pl~C pcohibicin$ direct driveway access Co 15ch Avenue. 3. ~esotvin$ sever and vacer connections rich l~r~ and Severs. '-~sion ~D ~s ~ocaCe~ be~eea oo~. ... ~e redesi~ed plaC vas appcoved subject 1. Resolvin$ utility easements. 2. Providin$ 30' Of rish~-o[-vay ~romMeadov Street. 2204 CLEVELAND AVENUE · ANCHORAGE, ALASKA 99503 · 277-0231 July 21, 1977 Gloria Bowman 1355 Crescent Avenue Anchorage, Alaska 99504 Re:.. 40 acre'parcel,.Tract B,:Chickadee Slopes, in Section 23 T12N R3W S.M. Alaska Dear '6lo"ia : '" '"'- ..... - At your request we have completed a preliminary subsurface soils' investigation on your property and transmitted herewith are the results of the test boring data. The purpose of the test borings was to determine the Soil types, ground water and bedrock conditions which occur to a depth of 16 feet on this 40 acre parcel of land. A total of nine (9) test borings were drilled as shown on the enclosed map. The test borings were drilled to a depth of 16 feet with a tracked mounted Mobile B-50 drill using continuous flight augers. Soil samples were generally obtained at 5 foot intervals. Laboratory analyses of the soil samples consisted of moisture contents and visual classifications. Discussion ' ' Surface Peat encountered.at'.lower elevations were damp to wet. ~;.~.. The typical .underlying ..~'~.ls-~ncountered in this 40 acre tract consis~.of~ S, Qnudy Silt (ML) and Silty Gravels (GP/GM). Drainage areas required for on-site sewage systems ·would generally range Gloria'Bowman 40 acre parcel, Chickadee Slopes July 21, 1977 Page 2 from 150 to 3~0--square feet per bedroom in these sotkls. .~round water was encountered in test holes ~7 and #8. No bedrock was encountered to a depth of 16 feet. A profile view wa~ not included with this report due to the ir- regul rra h[ch wou equlre a detailed topographic map. '.-.-i~. If you have any questions concerning this report, please contact our office. ' Very truly yours, CONSTRUCTION TEST LAB David Paul Laboratory Manager DP/NAH/ss enclosures Approved: Neal A. ]lausam, P.E., L.S. CONSTRUCTION TEST "One res= is ~or~h a thousand opinions" 2204 Cleveiand- Anchorage, Alaska 99503 - 277-0231 Hole No. one Location See enclosed map Top Elev. F, xfst ~ no Sheet of W.O. No. Operator DP Dat~ 7/05/77 Client__Glor~a Project 40 acres in Tract B, Chickadee Slopes Depth CLASSIFICATION . SAMPLE' Feet. .~ SYSTEM DATA LEGEND 1 I! I Peat · ./ 4 '¢ 7 G P~%VEL · Grab Sample 5 /~'~ Brown Sandy Silty Gravel, @ -5 feet 6 ~=.0, with oc=a,~o=~, =o~, .,.,o~,~u=~ = 7 ~/ (GM) SAND ~ 8 /~./ ~0 -~ '~ "'" 11 - 13 ~ ·. C~Y 14 ?/~ ti~t Gravel. 15-. : Silty Gravel (GM) Bottom o~ Test Hole ORGANIC 17 - CONTENT 18 No ground water or bedrock encountered. 19. 20 - . PEAT 21-- .~ : 22 FROST 23 ~9~ .. , 24'' 25 - ~ATER 26 ' TABLE CONSTRUCTION TEST ~.~B "One test is worth a thousand opXnXons" 2204 Cleveland -Anchorage, Alaska 99503 - 277-0231 Hole No.. Location.. Two See enclosed map Top Elev. Existing .... Depth .:~7 . Cr.~$SiFiCATiON SYSTEM ' ' './ Brown Silty Sandy Gravel (GP/GM) · ~ More Gravel / Silty Gravel (GM) More Silt J , .. Bottom of Test Hole No ground water or bedrock encountered. . ...... Feet 3 4 5 7 10 ll 12 13 14 15 17- 18 19 20 21 22 23 24 25 2~ Sheet. of. , W.O. No,_ ~rator DP Date __ 7-5- Client. Gloria BO~an Project 0 acres in Tract B, Ica ee ope~- -' DATA LEGEND GR_~VEL SAND SILT Grab 10' :e = 9.1% CLAy ORGANIC CONTENT PEAT FROST WATER TABLE CONSTRUCTION TEST L~B "One test ~s worth a thousand opinions" .2204 Cleveland - Anchorage, Alaska 99503 - 277-0231 Hole No. Three Location Sheet. of See enclosed map W.O. No. Operator DP Date 7-5-77 Client. Gloria Bo,~an Top Elev. Existinq Project.40 acres in Tract B, - 'Chickadee Slopes Depth CLASSIFICATION S~24PLE Feet ........ SYSTEM - '. DATA ..... '" '." 'LEGEND :":"' '3.-.. 1 J .I Peat 2 ,~1 3 Brown Gravelly Silt 4 ~/9/ (ML) Grab 5' ~ . ~/ Moisture = 6.7% GRAVEL [:.....' 7 ~ SAND ~.~..~' 10-a &' SILT ?/"' ll,'D 6, Bro~ Silty Gravel (GM) Grab 10' 12 2> ~ Moisture = 7.9% '~ ~ ' C~Y 14 . -. 15 Brown sandy silt, damp 16 ~'/.-.with occasional 3/8" pebbles. (MI) ORGANIC 17 CONTENT 18 Bottom of Test Hole 19 go ground water or bedrock ~ncounterd. P~T 20 22 ~3 FROST 24 '~" '.'." '~ '. 25 - - I~'ATER 26 TABLE CONSTRUCTION TEST I3~B "One test is worth a thousand opinions" 2204 Cleveland - Anchorage, Alaska 99503 - 277-0231 Hole No. Four Sheet of DP Location See enclosed mad W.O. No. Operator Date 7-5-77 Client. Gloria Top Elev. Existing Project 40 acres in Tract B, · - Chickadee Slopes Depth CLASSIFICATION SA/.~LE Feet SYSTEM DATA · LEGEND 1 -~// Organic Content '- ~ '" I 3 ,./.~ Brown sandy silt with 3/8" 4 /.<½ pebbles & occasional 6obbles, " GRAVEL ~ ,., moist. (ML) 5' Grab 5 ~ '/ Moisture = 14.3% _/ Brown sandy silty gravel, 8 .~ ~ moist. (GM) 9 .~ ~& 10 -~./ SILT · . 3<--1 / C~%Y 14. 9 ,Sandy Silt (ML) 16. ~. ORGANIC 17- Bottom of Test Hole CONTENT 19- No ground water or bedrock encountered. P~AT 20- .. '." CONSTRUCTION TEST LAB "One test is worth a thousand opinions" 2204 Cleveland - Anchorage, Alaska 99503 277-0231 Hole No. Location Five " See enclosed map Top Elev. Existing Depth 'Feet 1 2 3 4 5 6 7 8 9 10 11 12 13 14 < 15 16 :.~.. 17 18 19 2O 21 22 23 24 25 26 CLASSIFICATION ·SYSTEM Peat, damp Grey sandy silt, wet, some 3/8" pebbles. (ML) Hit Gravel Sheet of - DP W.O. NO. Operator Date 7-5-77 Client.~Gloria Bo~an Bottom of Test Hole ground water or bedrock ed.. Project40 acres in Tract B, Chickadee Slopes S~4PLE DATA LEGEND :' GRAVEL SAND SILT CLAY ORGANIC CDNTENT PEAT FROST ~{ATER TABLE CONSTRUCTION TEST L%B "One test is ~orth a thousand opinfons" 2204 Cleveland - Anchorage, Alaska 99503 - 277-0231 Hole No. Location Top Elev. Depth Feet 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 '20 ~22 23 24 25 26 Six See enclosed map E~isting CLASSIFICATION SYSTEM ' Peat, wet Brown sandy silt with occasional gravel, (less than 25%) '(ML) }tit gravel Gravelly sandy silt :: (ML) Bottom of Test Hole No ground water or bedrock encountered. Sheet. W.O. No. Date Client Project S~4PLE DATA · of ~perator DP 7-5-77 Gloria Bowman 40 acres in Tract B, Ch~ckaaee Slopes LEGEND GP~%VEL SAND SILT CLAY ORGANIC CONTENT PEAT FROST l.;ATER TABLE ~'% CONSTRUCTION TEST LAB ~ *,~e zes= is ~orth a thousand op~n~o.s" 2204 Cleveland - Anchorage, Alaska 99503 - 277-0231 Hole No. Location Seven Sge enclosed map Top Elev. Sheet of . W.O. No. ~perator DP Date 7-5-77 Client.Gloria Bowman Project0 acres in Tract B, Chickadee Slopes Depth CLASSIFICATION S~.~PLE Feet SYSTEM DATA LEGEND 2 , Peat, wet · ' · G~%VEL 4 .,~ Grey sandy silt with occasional 3/8" pebbles. Grab 5' % ,j (ML) Moisture = 15.0% 7 ..'/, SAND ,,~/' Grey sand, wet (SM) SILT · CLAY 16. ORGANIC 17. Bottom of test hole CONTENT 18 No bedrock encountered. · 20 2322 FROST 25 ~-[:' WATER. 26 TABLE . CONSTRUCTION TEST LAB "One test Es worth a thousand op~n~ons" 2204 Cleveland -Anchorage, Alaska 99503 - 277-0231 Hole No... Location Top Elev. Eight See Enclosed map Sheet of ~.O. No. __Operator DP Date 7-5-77 Client Gloria Bowman Project0 acres in Tract B, Chickadee Slopes Depth CLASSIFICATION SA/,IPLE Feet SYSTEM DATA LEGEND 2 Peat, wet '3 'I: 4 I~'ater level G P~%VE L ~ ~ Sllty Gravel (GM) 11 , I ' 12 ~ I~ttOm of test hole , ORG~I~ CONTENT PEAT 2 .,,., . i;2, -' 2~I TABLE ~ CONSTRUCTION TEST L~,B "One test is ~or~h a thousand opinions" 2204 Cleveland -Anchorage, Alaska 99503 - 277-0231 Hole No. Location Nine Sheet of See Enclosed map W.O. No.__Operator DP Date 7-5-1/ Client.Gloria Top Elev. Exist..~ng Project0 acres in Tract B, Chickadee Slopes Depth CLASSIFICATION SA=MPLE Fee t SYSTEM DATA LEGEND 1 2 ~ Brown silty gravel, moist ~ / (G~) 4 ~ / G~VEL 5 Moisture = 8.6% 7 f~ ., ' SAND I.' i- 8 ~ ~..:: 10 Sandy silty gravel with SILT // 11 >id occasional boulders 12 ~ ,, (GM} : / 14 /~ Wet sandy silty gravel/silty C~Y 15- sandy gravel. (GM) 16. ORGANIC 17 Bottom of test hole CONTENT 18 19-- NO ground water or bedrock encountered. PEAT 20 21 ..... " '~ J FROST 23 24 'ti '" ~.~ 25-- ' ~ATER · '~ 26 TABLE HI]ILTY~E FI:IR ~RS'TE DISPBS,qL -.-