The URL can be used to link to this page

Home My WebLink AboutHAWKINSON S-10797Hawkinson 5 -10797 Municipality of Anchorage Development Services Department Building Safe~' Division MEMORANDUM DATE: 07/13/01 TO: Jerry T. Weaver, Jr., Platting Officer, CPD FROM: ~ Cross, PE, Program Manager, On-Site Water & Wastewater SUBJECTf Comments on Cases due July 19, 2001 The On-Site Water & Wastewater Program has reviewed the following cases and has these comments: 10797 Hawkinson Subdivision frenberg). S - 10798 Information to satisfy the requirements specified by AMC 15.65 and AMC 21.15 must be submitted for each lot of this proposed subdivision. This information must include, but may not necessarily be limited to: . Gound water monitoring must be conducted to confirm the suitability of each proposed lot for development using on-site wastewater disposal systems. Ground water monitoring must be conducted during high ground water season in either the fall (October) or spring (April-May). ' Areas designated for the original and replacement wastewater disposal system sites must be identified and must meet all criteria specified in AMC 15.65 including slope and slope setback requirements. Topographical infmmation must be submitted. Supporting documentation on water availability must be provided. Prominence Point Subdivision Phase 2B. No objections. o7/26/01 10:19 FAX 907 343 4220 Community Planning ~ CROSS [~002/003 SHORT PLAT SUMMARY OF ACTION July 23, 2001 _~_-10797. Hawkins Subdivision Approval o£thc plat subject to: 1. Resolving Utility easements. Reconfiguring the lot lines to run north and south so that access from Lots 1 & 2 would be on Alatna Avenue. 3. Drawing thc plat to a 1' = 100' scale. Resolving with Dcvclopment Services Department, On-Site Water & Wastewater Division: Info~mation to satisfy the requirements specified by AMC 15.65 and AMC 21.15 must be submitted for each lot of this proposed subdivision. This !ntorma.tion must include, but may not n¢ccssarily be !i_mlted to: Ground water monitoring must be conducted to cor~t~ ~ the suitability of each proposed lot for development using on-site wastewater disposal systems. Ground water monitoring must be conducted during high ground water season in either thc fall (October) of sprfiag (April-May). Areas designated for the original and replacement waste~ater disposal system sites must be identified and must meet all criteria specified in AMC 15.65 inchiclir~g slope and slope setback requirements. c. Topographical info,'ination must be submi~ed. d. Supporting documentation on water availability must l~e provided. Placing the following note(s) on the plat. a. "Prior tn the issuance of a building or land use permit, thc applicant shall provide a site drainage plan for the arcu affected by the application,/ncluding an appropriate drainage ouffall for surface water and roofdr~i-~ge. The drn{nage plarl shall also indicate effects if any, on adjacent properties'. 6. Showing the case n!,rnbcr on the plat. 10:20 F~I 907 343 4220 .. Co_~munlty Planning ~ CROSS Short Plat Summary of Action July 23, 2001 Page 2 8-10798, l~romincnce Potnte Subdivisf~n. Ph~so.2B Approval of thc vacation of Utility Easements subject to: 1. Obtaining letters of non-objection from all alfccted u61~tics. 2. Filing a sultablc re-plat within lB months. Approval of thc plat subject to: 1. Resolving utility casements 2. V~g with AWWU thc status of water and sanitary sewer main extension a~-eerne~nts. 3. Carr~g over plat notes 11 through 22, from underlying plat 2000-2, as is applicable to this plat~ 4. Resolving with Physical Plannin§ the need to ~_mend plat note #7 to read: 'Open spacc Tract F1 is also ~ utility casement. All areas disturbed by utility installation shall be seedcd with grass ~ecd _~d. replanted witla native species, inc!.~Idina shrllbs andwoody f. orms. Michael N. Anderson, P.E. Civil/Structural Engineering 4640 Shoshoni Avenue Anchorage, Alaska 99516 Phone 345-3377 Fax 345-1391 October 14, 2002 Jim Cross, P.E. Municipality of Anchorage Department of Health and Human Services P.O. Box 196650 Anchorage, Alaska 99519-6650 Re: Lot 1 & 3 Hawkinson Subd. (S-10797) DearMnCross This is my response to your request for ground water monitoring on the above subdivision. I have monitored the water level in the two monitoring tubes during the spring and fall highwater season, which consist of April thru early June and September thru October of 2002. At no time was any water observed in the two monitoring tubes. The original test holes were done by Lee Reid Jr. and show water at elevation 10 feet on the north lot, however nothing was detected. Both test holes have good percs and do not require any additional peres to show three required leach fields. A topical graphical map has also been included with this report to show the slope for the given lot. No slopes greater than 25 percent exist near the septic test holes only gently sloping grades starting on the east and sloping to the west. Also I have reviewed the existing well logs in the area and have included them with this submittal for your review. The typical well yields over 6 gpm which is more than enough to serve a single family residence. The well depth is less than 100 feet for both wells, a map has been included to show locations of the wells also. If you have any question please call me at 345-3377 Michael N. Anderson, P.E. ! SHORT PLAT SUMMARY OF ACTION July 23~ 2001 S-.!0797, Hawkins Subdivision Approval of the plat subject to: Resolving Uti!ity easements. Reconfiguring the lot lines to run no~th and south so that access from Lots I & 2 would be on Alatna Avenue. Drawing the plat to a 1' = 100' scale. ,~ Resolvin§ with Development Set'rices Department, On-Site Water & Wastewater Division: ~"6~ '~C. Infommtion to satisfy the requirements specified by AMC 15.65 and ,.~'/~., AMC 21.15 must be submitted for each lot of this proposed subdivision. ~Cr~e V~ ~ll~f{9/This info, mation must include, but may not necessarily be limited to: a. Ground water monitoring must be conducted to confimz the suitability of each proposed lot for development using on-site wastewater disposal systems. Ground water monitoring must be conducted during high ground water season in either the fall (October) of spring (April-May).-:. Areas designated for the original and replacement wastewater disposal system sites must be identified and must meet all criteria specified in AMC 15.65 including slope and sloP~ '~'etback requirements. bo o Topographical infom~ation must be submitted. Supl~orting documentation on water availability must be provided. Placing the following hotels) on the plat. 'Prior to the issuance of a building or land use permit, the applicant shall provide a site drainage plan for the area affected by the application, including an appropriate drainage outfall for surface water and roof drainage. The drainage plan shall also indicate effects if any, on adjacent properties'. 6. Showing the case number on the plat. Municipality o! Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST PERFORMED FOR: LEGAL :)E$CRIPTION: 2 3 4 6 7 8 9 10 11 12 13 Township, Range, Section: SLOPE WAS GROUND WATER ENCOUNTERED? IF YES, AT WHAT / ~) DEPTH? , P E Depth Io Water Alter Monitoring? ~,~ __ Date: Gross Time SITE PLAN Net Drop 16 17 18 19 20 PERCOLATION RATE ~Z, tmmutesz~nch) PERC HOLE DIAMETER PERFORMEDOY. /. f~,~,/ I J., ~z',e) CERTIFY THA13HIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STAT E AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DA? E. DATE. ~'//5"'./~ ~, ?~.oo~,~... ,.~,. ~[07 ~ 7 J~ 2 ~ 20¢ DEPARTMENT 825 "L" Street, Anchorage, Alaska 99502~650 SOILS LOG -- PERCOLATION TEST LEGAL DESCRIPTION: Township, Range, Section: SLOPE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 · 15 16 17 18 19 20 .,/ WAS GROUND V~ATER ENCOUNTERED? DEPTH? Depth to Water kHer ~"z//)-/~ 2- Monitoring? /~ / Date:. SITE PLAN Gross Net J Depth to Net Reading Date Time Time J Water J Drop PERCOLATION RATE // ~- (m,nuteSzmch) PERC HOLE DIAMETER TEST RUN BETWEEN z-/ FT AND '~',~" FT COMMENTS ~,~ f ~' ~'L~ //e~ ~ . PERFORMED BY; ~ · I"~. ~ I / . t~-.-~ CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE. _~'///~/~ ~ t 72-~8 ~Re~ 4.85~ * , ,e,~F~[~EER'S SEa, L) Mun c pa ty of Anchorage DEPARTMENT OF HEALTH & HUMAN SERVICES ~2~ "~" s,~,. *.~or~e. *,~,~ ~02-0~0 ..t.:. ,:~ ;.... ~ ~.~ so,~s ~o~ - .E.CO~.~to. ~ES~ LEGAL ~SCm~T~ON: Z~ ~ ~ ~ ~ ~/5 , Township, Range, Section: ~[~~ - 1 2 3 4 5 6 7 8 9 10 11 12 13-- 14 15 16 17 18- 19 20 COMMENTS SLOPE SITE PLAN WAS GROUND WATER ENCOUNTERED? y'~ ,,¢' · IF YES, AT WHAT / L DEPTH? ~' 0 P E Depth 1o Waler k~er Monitoring? '~ ' ~' Date: il I Gross Net Depth to Net Reading Date Time Time Water Drop PERCOLATION RATE __ TEST RUN BETWEEN __ {mlnutes~lnch) PERC HOLE DIAMETER __ FT AND FT PERFORMED BY: Z ~ ~.~ ri] I ~. I~, ,/ CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: ~'///~'/~' ~ H PERFORMED FOR: LEGAL DESCRIPTION: 1 2 3 5 7 8 9 10 11 12 13 14 16 17 18 19 20 COMMENTS Municipality of Anchorage DE'PARTMENT OF HEALTH & HUMAN SERVICES 825 "L" Street, Anchorage, Alaska 99502-0650 SOILS LOG -- PERCOLATION TEST Township. Range. Section: SLOPE WAS GROUND WATER ENCOUNTERED? S IF YES, AT WHAT / ~) DEPTH? P E lie~h la Wa~r Nl~r SITE PLAN Gross Net Depth to Net Reading Date Time Time Water Drop PERCOLATION RATE ~' (minuteS/tach) PERC HOLE DIAMETER TEST RUN I~ETWEEN ,~*' ~ FT AND ~o OFT PERFORMEDBY. /, 1~'4~,/ I ~., ~,,,e~ CERIIFY THAT THIS TEST WAS PERFORMED IN ' ACCORDANCE WITH ALL STA*I'E AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DAIE. DATE; ~'/'~ 5'"J//~ ~' Municipality o! Anchorage DE~ART..MENT OF HEALTH & HUMAN SERVICES 825 "L' St,eat. Anchorage. A,aska ,9502-0650 SOILS LOG -- PERCOLATION TEST LEGAL DESCRIPTION: 1 2 3 4 5 6 7 8 9- 10 12 13 14 15 16- 17- 18- 19 20 Township. Range. Section: SLOPE WAS GROUND WATER ENCOUNTERED? IF YES. AT WHA* DEPTH? Deplh to Waler J~er SITE PLAN I I I ~z~-1~ I I,:1 I I II II II.'~ I I1~1 I I [ I I I'ii 1 [i/I Gross Net Depth to Net Reading Date Time Time Water Drop I PERCOLATION RATE TEST RUN BETWEEN . / Z. {minutes/tach) PERC HOLE DIAMETER PERFORMED BY; ] , 1"~4~, ~ I Z ' I'~, ~ CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: _~',.!/,~./~' ~ ~ 72~ (Rev 4~85) 0 :::;0 0 7' o o 0