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Home My WebLink AboutUNDERMOUNTAIN ESTATES Lots 6-10 Plat# 85-353 S-7813 MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION Environmental Health Division CASE REVIEW WORKSHEET CASE NUMBER: DATE RECEIVED: COMMENTS DUE BY: S-7813 August 2, 1984 August 17, 1984 SUB D IVISIO N O RPR O~1~,~ L E: L~ot~ 6-10 ~m~rmountain I ; ) COMMUNITY WATER AVAILABLE Estates Subdivision ~?: ~,~BB,.,c SEWEB AVA,LABLE COMMENTS: _1 ALASKA %IROFIm IITAL ~mlineerinq & (~.uironme.~al COI1TROL Se, P ]C S, II1C. MUNICIPAtlTY OF ANCHORAOF- DEPT. OF HEALTH & ENVIRONMENTAL pROTECTION Soils Investigation Undermountain Estates Subdivision (Tract 9, Donald C. Schroeder Subdivision 92) RECEIVED I.OC~TION The proposed subdivision is a 32.5 acre tract located within SE 1/4 Section 15, T14N, R1W, S.M. It is located to the north of Hanm~ond Avenue off Eagle River Road. The land consists of very steep slopes for the most part, in excess of 25%. There are a few ar~ where the slopes are locally gentler. An existing dirt road with 14% slope provides temporary access. Because the' slopes are steep, careful road-building and terracing are planned. Homes to be built will be constructed by Earth Shelter Housing Limited, a oc~pany that specializes in building h(xaes partially into hillslopes, which they have done successfully on similarly steep slopes along Highland Road. Vegetation consists of alder, birch, and aspen. There are occasional stands of cottonwood to the south. Soil testing was perfonm.~d using a small backhoe. Four tests were done at fairly evenly spaced intervals to provide a representative idea of soil conditions in the area. The soils in all the test holes appeared the same--beneath an organic layer varying frcm 1 to 3 feet thick is brown silty sandy gravel with abundant rounded cobbles. The soil is loosely held and fairly sandy. In test hole #1, bedrock was encountered at 7 feet. It fractured ~a~ly end the backhoe was able to dig into it for a couple feet. Bedrock was not encountered in any other test holes, and does not appear in outcrop elsewhere. The percolation rates ranged fr~m 185 to 313 sq. ft./bdrm. Soil all along the road cut above the dirt road appears to be the same as that found in the test holes, suggesting lateral continuity. REOC~4E~D~ SYSTEMS Because the slopes are steep, trenches would be.~ For test hole %1, where bo~rock was found, a shallow 5-wide built 6 feet above the rock could be built. Or, another test hole coui~[~ ~ug~sew~e~6 on the lot to find a spot where no bedrock exists. It is likely that such a place exists, since b~ock was not found in the other holes and the lots are large. 1200 LU~sl 33rd Auenu~. Suite Soils in all 4 test holes were found adequate to support on-site septic systems. Careful planning and building will be necessary because of the steep slopes. MUNICIPALITY OF ANcHORAGb DEPARTMENT OF HEALTH AND ENV RONMENTALpROTECTION 825 L. ~et, Anchorage, Alaska 99501 264~,20 SOILS LOG - PERCOLATION TEST ~ ~OtLS LOG PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: 1 3 10- 11 WAS GROUND WATER ENCOUNTERED? DATE FER ORMED: IF YES, AT WHAT DEPTH? 13- SLOPE SITE PLAN 14- 15- 16- 17- 18- 19- P Gross Net Depth to Net Reading Date Time Time Water Drop PERCOLATION RATE ~/ 4 ~' (minutes/inch) TEST RUN BETWEEN ~'ttl"~ I 'FT iUD ';~-~--- ET COMMENTS ~o.'/ ,-,~',~ / ~' ~'/z' 12-008 MUNICIPALITY OF ANCHORAGE~ DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION SOILS LOG - PERCOLATION TEST LEGAL DESCRIPTION: ~- ~ , ~,,/ X ~' 2~"~ ~ ~ ~ ~ / SLOPE SITE PLAN 1 2 3- 4- 5- 6- 7- 8 9 10 11 12 13 14 15- 16- 17- 18- 19- 20- oL COMMENTS PERFORMEDBY: ~/"7 72-008(6/79) WASGROUNDWATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop ,3~1 ~ /o~, ~ .~ - z ~-)-'/' ~:, , ~ ~- ./c~ /~ ~ - ~J PERCOLATION RATE ~--~"- ~ (minutes/inch) /' 5~ FT AND ~ · FT 'MUNICIPALITY OF ANCH~IRAGE"~ DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION 825 L. Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: C>L 2 3 ¢~ Itt 4 ? 8 9 10 1'1 12. DATE PERFORMED:' SOILS LOG ~ PERCOLATION TEST WAS ORO~NOW.",TER do ~ ENCOUNTERED7 IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop /i )-~ /~ .5'1 // 5-~ - , ,/~ //~z~ ~ ~ ,/~ 14- 15- '16 - 17- 18- 19- PERCOLATION RATE (minutes/inch) TEST RUN BETWEEN FT AND cOMMENTS .--~,'1 ,-~-/~d d~ zo,~ [l"f'b ,-,~.~., 2 ~,~ /~ /~' · 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 $OtLS LOG PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: SLOPE SITE PLAN 1 3 4 § 8 14- 15 T~ 16 17 18 19 2O WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Reading Dat~ Gross Net Depth to Net Time Time Water Drop 1 2.og / '~- ? Z' ,I g /~1~ , ~ ~ PERCOLATION RATE (minutes/inch) ¢~' , FT COMMENTS --%,,'1 PERFORMED BY: CERTIFIED BY~ 72-008 (6/79) ALASKA ei,dlROrllTlellTAL COFITROL SeRuiCe$, (~n§incerin§ $ ~nuironmenlal $ludie$ InC. September 4, 1984 Dave Young EARTH SHELTERED ALASKA Mile 7.5 Hiland Road Eagle River, Alaska 99694 Dear Dave, On July 26, 1984, AECS, Inc., performed 4 soils tests on Tract 9, Donald C. Schroeder Subdivision #2. Although all the tests holes had good soil in them, in one of the holes, TH #1, bedrock was encountered at 7 feet. This caused some concern, and it was suggested that test holes be dug on either side of TH #1 to see if the bedrock continued. On August 31, 1984, two test holes were dug near TH #1. One was located about 60 feet to the southwest of TH #1, to a depth of 9 feet, with no bedrock encountered. The excavator was unable to dig deeper due to the position of the backhoe on the slopes. The silty gravelly soil passed a percolation test at 164 sq. ft./bd. The second was dug about 125 feet to the east of TH #1. In this testhole, the GM soil was rated at 176 sq~ ft./bd. No bedrock was encountered to a depth of 12 feet. A third test hole was done, 275 feet to the east of TH #6, in the hopes of finding even more good soil. However, the soil here was an extremely tight silty GM, and failed a percolation test immediately. Significantly, though, no bedrock was found to a depth of 12 feet. There still is a good test elsewhere on this proposed lot. In conclusion, it appears that the bedrock continuous, and therefore not a serious problem. holes on each of the 4 proposed lots. is isolated and There are good test not Sincerely, Environmental Geologist Approved By: 1200 L~¢s! 33rd ~uenue, $ui1¢ [~,/~nchor~% /~loska 99503'(907) 561-5040 MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVIRONMENTAl- PROTECTION 82S L, Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST E~ SOILS LOG PERCOLATION TEST PERFORMED FOR: LEGAL DESCRIPTION: 1 2 G~ 3 4 5 6 7 8 9 c_ SLOPE DATE PERFORMED: ~S~ ~1 J¢¢~/ SITE PLAN 10 11 12 13 14 15 16 17 18 19 20 COMMENTS PERFORMED BY: 72-008 (6/79} WASGROUNDWATER ENCOUNTERED? IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH AND ENVl RONMENTAL PROTECTION 825 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 10 11 12 13 14 15 16 17 18 19 2O COMMENTS PERFORMED BY: 72-008 (6/79) DATE PERFORMED: SLOPE SITE PLAN WAS GROUND WATER ENCOUNTERED? ]Jo IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop I go3 zo -3 o · ~3 PERCOLATION RATE TEST RUN BETWEEN CERTIFIED BY: ] 7, $~ (minutes/inch) / If~_., FT AND ,,2,, FT z7 ~"~y DATE: ,r'"'x, ~ ¢ SOILS LOG MUNICIPALITY OF ANCHORAGE ~] DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION PERCOLATION TEST 825 L, Street, Anchorage, Alaska 99501 264-4720 SOILS LOG - PERCOLATION TEST PERFORMED FOR: 1~~'~°~ ~ DATE PERFORMED: LEGALDESCRIPTION: '7~('-&r--'~ ~¢~ ~'"~OP,~'~ ~ ~ ~rOeeJoz- ~tJ~i~'['~'o~ ~-- T~-} SLOPE SITE PLAN ..'FIt"t- / 10 11 12 13 14- 15- 16- 17- 18- 19- 20- WAS GROUND WATER S ENCOUNTERED? ~J~ ~ P E IF YES, AT WHAT DEPTH? Gross Net Depth to Net Reading Date Time Time Water Drop I 12.0o I S' 5~'- . 03 PERCOLATION RATE /~ ~' ~) (minutes/inch) TEST RUN BETWEEN ~- FT AND ~ ~,7.- -- FT ..~ 72-008 (6/79) MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION Environmental Health Division CASE REVIEW WORKSHEET CASE NUMBER: DATE RECEIVED: COMMENTS DUE BY: 85-61 November 30, 1987 December 21, 1987 SUBDIVISION OR PROJECT TITLE: Undermountain Estates Subdivision - Agreement Time Extension Request ( ) PUBLIC WATER AVAILABLE ( ) PUBLIC SEWER AVAILABLE ( ) COMMUNITY WATER AVAILABLE 71-014 (Rev. 5/83) 21 November, 1987 Gentlemen: RE: UNDERMOUNTAIN ESTATES SUBDIVISION AGREEMENT Public Services File No. 85-61 This letter is in response to your certified letter #: P 234 387 107, to me dated 2 November, 1987 stating my subdivision agreement entered into on 16 December 1985 which gave 2 years for subdivision improvements to be made is in default. Since 2 years have not yet completely passed, I'm puzzled as to how I can already be declared in default. However, you are correct in stating the improvements are incomplete. Since this is a small subdivision (5 lots) and I am not a major developer with any financial backing, the development "plan" was to pay for the agreed upon subdivision improvements upon the sale of the first lot. The current Alaskan economy being what it is, we haven't even tried to actively market these lots, so none have been sold. But since I do believe in Alaska and that the economy will turn around especially in the Eagle River area, I request a maximum time extension for completion of the required subdivision improvements. It has always been my intention to fulfill my obligations and I am not out to take advantage of anybody. Sincerely, ~ Carol "J.~'edn~r "Small-Time-Developer,, Please note my new address: P.O. Box 670867 Chugiak, Alaska 99567 '&50,O0 lOlL .S,UBDIVISION. CASE REVIE~ COMMUNITY PLANNING STAFF ANALYSIS AND RECOMMENDATION DATE: CASE: SITE: LAND USE: SOILS: Additional soils have been requested TOPO: Varies : ~ .- -,,. September 19. 1984, . ::,~ .,- S-7813 - UNDERMOUNTAIN ESTATES SUBDIVISION~ ~, 1 Tract into §'lots'with variance from .~,";~,~ 21.80.350A 32.5 acres Undeveloped/Residential VEGETATION: Alder/Aspen ZONING: R-9/SL DENSITY BEFORE: 1 AFTER: COMPREHENSIVE PLAN CLASSIFICATION: Residential Ibri'ENSITY: SURROUNDING AREAS: NORTH EAST SOUTH WEST LAND USE: S=ate Prop. State Prop. Res. Res/Under. ZONING: W W R-6 R-9 FINDINGS: 2. Public Works requests: Utility easements have been requested. subdivision agreement to construct Bacon Way to rural interior standards ffrom Hammond Drive to the end off the road a~ Lot 9. resolution of drainage and drainage easements Staff Analysis and Recommendation Case No. S-7813 Page 2 Co be resolved with Public Works Engineering. Traffic Engineering requests~ a. subdivision agreement ~or street name signs! and ~raffic control devices. b. dedication of 60%ROW in lieu of §0-£oot public access easemenC;~/ ~ . . · c. providing a temporary.~urnaround western terminus o£ che newly created Department o~ H~al~h requests'= ~o addit~onal $o11, =es=s~ one on LoC 9 and Loc 6. Slope and ~round water conditions must be established in ~he vicinity of the test sites.. ~-" Approval of the variance from 21.80.330A lots fronting a publicly dedicated ,RECOMMENDATIONS: c. providing a temporary turnaround for Bacon %;ay. d. providing 60' dedicated RO%; for Bacon Way...~, e. providing a creek main~enance easemen~o width Approval of the plat subject ~o~ I. Resolving utility easements. Resolving drainage and drainage easements with Public Works Engineering. Placing a note on the plat indicating Lots 6-10 cannot be further subdivided into more than 5 lot8. Entering into a subdivision agreement for the following: a. storm drain.gel ~-sc~*~~ traffic controI device,. 5.~.~_~Resolving soils with_ DHEP~~ 6. Placin~ a note on the plat stating the Municipality will not be responsible for future road maintenance· COMMENTS: Jc13/mpsa25 SUBDIVISION AGREEMENT FILE NO. 85-61 PLATTING CASE S-7813 ~,E~TITION AREA 500 1000 I I FEET