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HomeMy WebLinkAboutDEARMOUN #2 Water SystembeArmoun #2 Water System DEPT. OF ENVIRONMENTAL CONSERVATION April 9, 1973 WILLIA,~ A. EGA~ GOVERNOR $OUTHCENTRAL REGIONAL OFFICE MACKAY BLDG~ 338 DENALI STREET ANCHORAGE 9950! APR ~ 0197~ ~ E~J'. OF ~NVi~O~qMENTAL Glenn A. Huff Contracting Engineers & Associates 1801 Stanton Avenue Anchorage, Alaska SUBJECT: De Armoun Subdivision Water System As-Builts Dear Mr. Huff: The as-built plans for the subject project are approved for the features with which this Department is concerned. Yours truly, ~Jc/j f cc: GAAB-DEQ ~'~'- Kyle J. Cherry Regional Envirormental Engineer .SCRO/Anchorage STATE OF ALASKA DEPARTMENT OF NATURAL RESOURCES DIVISION OF LANDS 323 E. 4th Avenue Anchorage, AlaSka Pursuant to A. S. 46.15 and the rules and regulations promulgated thereunder, the Commissioner of the Department of Natural Resources through the Division of Lands, Water Resources Section, proposes to issue a water use permit to Harold W. and June D. DeArmoun, Star Route A, Box 278, Anchorage, Alaska 99502. The permit will be issued to provide for the use of an additional IS,S00 gallons of water per day for community water supply. The water will be taken from a drilled well at center of Schubert Circle, Block 2~ DeArmoun Subdivision No. 2, within S. E. 1/4 of Section 28, T. 12N., R. 5Wo, S.~., and will be used in all 12 lots in Block 1 and in Lots 2-8 and 10-15, Block 2, DeArmoun Subdivision No. 2, as described above. Application for 7,S00 gallons per day from this source was filed October 5, 1971. Further information relative to this p~oposed withdrawal may be obtained from the Water Resources Section, Division of Lands, 323 East Fourth Avenue, Anchorage, Alaska. Objections or other comments must be submitted in writing to the Water Resources Section and received on or before March 7, 1975, in order to be considered. The Division of Lands reserves the right to waive technical defects in this publication. PUBLISH: February 20, 1975 BY: F. J. KEENAN, Director Dean J. N~fion, Chief Water Resources Section ANCHORAGE DAILY TIMES STATE OF ALASKA DEPARt,lENT OF NATURAL RESOURCES DIVISION OF LANDS 323 E. 4th Avenue Anchorage, Alaska Pursuant to A. S. 46.15 and the rules and regulations promulgated thereunder, the Commissioner of the Department of Natural Resources through the Division of Lands, Water Resources Section, proposes to issue a water use permit to Harold W. and June D. DeArmoun, Star Route A, Box 278, Anchorage, Alaska 99502. The permit will be issued to provide for the nse of 7,500 gallons of water per day for community water su~nlv. The water will ;e taken from a drilled well at center of Schube~t'Circle, Block 2~ DeArmoun Subdivision No. 2, within S. E. 1/4 of Section 28, T. 12N., R. 3IV., S.M., and will be used in all 12 lots in Block 1 and in Lots 2-8 and 10-13, Block 2, DeArmoun Subdivision No. 2, as described above. Further information relative to this proposed withdrawal may be obtained from tile Water ~tesources Section, Division of Lands, 323 East Fourth Avenue, Anchorage, Alaska. Objections or other comments must be submitted in writing to the Water Resources Section and received on or before May 17, 1972, in order to be considered. The Division of Lands reserves the right to waive technical defects in this publication. PUBLISH: ~.lay 2, 1972 ANCHORAGE DAILY TIMES BY: F. J. KEENAN, Director Dean J. N~1~].on, Chzef Water Resources Section 1801'/Stanton Ave. CONTRACTING ENGINE.S & ASS~ Consulting Engineers Anchorage, Alaska Phone: 279-1792 £NGINEERING REPORT DeA~qOUN SUBDIVISION NUMBER 2 Water System for: All 12 lots in Block 1. - All tots in Block 2. except Lots 1, 9, 14 and 15. Lots l, 9, 14 and 15 will be served Dy individual wells tl~at are not'included as a part of this water system. Total lots served : 23. A. General 1. The system as designed will serve the 23 lots in this subdivision as noted above and as shown on the attached drawings. 2. The system as designee will not be expanded, 3. There will be no industrial activity which will affect the requirements of this water system, 4. The estimated daily water consumption assuming 100 g,p,d, min. and 3.25 people per residence and 23 resi'deqces is ]OOx3.25x23 = 7475 gal/day, or 5.2 gal,/min. This is the present and future requirement, The capacity of this system is based on the peak demand computed as ~Qllows: Assuming for each lot: ".'~'- 1, bathroom group wit~ ~lush tank ~'~': 2, kitchen sink :. .3~ laundry tray Total supply fixture units p~r lot = 1] £nginee¢ing Report 'DeArmoun Subdivision No. 2 For 23 lots the loa~ on the system in supply fixture units is 253; With this load the ~upply demand ~s'~qual to 74 g.p.m, for approximately 20 minutes or 1480 gal. With the installation of one 82 gal, Hydro-pneumatic storage tank with 2/3 effective volume for storage on each lot served, except lot 3, Block 1 and lot 3 and lot 4 Block 2, the total storage for this system will be: 82x 2/3x20 = 1093 gal, Required pump capacity = 387 = 19,4 ga]. per minute or 1164 gal, per hour 20 5. The source of water for this system will be the existing deep water well located as shown, on the plans, The well is drilled and cased with a 6" casing to prevent ground water contamination, The fop of the casing will extend at least 12'~ above finished grade with no pit around the casing. Finished grade 6hall slope away from the Casing in all directions. The welt will be equipped with a N.S.F. approved Williams Adaptor for Submersible Motor pumps Model N~, 603U and seal or approved equal. 6. All development in this area depends on wells for their water and the acquifer which this well penetrates has proven to produce water of a quality suitable for household uses. Prior to public use the water from this well will be tested for quality. Permafrost iS not known to be present in this area, C. This is not a surface water source. Purification.is not anticipated or proposed, Pressure will be maintained in the lines at all times by the use of a submersible pump with a minimum rating of 1180 gal, per hour with a discharge pressure of 60 p,s,i, and a depth to Water level of 120 feet, (Jacuzzie Submersible Pump No, 15S4C or equal), To m~nimize fluctuation in pressures a hydro-pneumatic system consisting of one 82 gal. pressure tank will be located in each residence except on lot 3, Block 1 and lot 3 and lot 4 Block 2. Pressure loss in the mains at peak pumping rate is negligible. ! Engineering Report DeArmoun Subdivision No. 2 -3- F. The distributio.q lines will be constructed with approximately 530 lin.]ft, of 2" . NSF approved water pipe and 670 lin. ft, of l" .~:. NSF approved water pipe. Service connections with a corporation stop at the main and a curb stop with service box installed at the property line for each lot will be constructed as -part of this system using 270 lin. ft. of 3/4" ..... ; NSF approved water pipe. The existing distribution system as shown on the plans will be connected to the new distribution system as shown, · The existing line between lot 9, Block 2 and and lot 3~ Block 2 is a l" plastic non-rigid waterline with approximately l0t of 1" Type K copper at each end. This line will. be disconnected at the house on lot 9, Block 2, There is a valve under the house on lot 3, Block 2. The existing line between lot 1, Bl'ock 2 and lot. 3, Block 2 is a l" Type K copper line. The new system will connect to this line at the property l-ine between lot 2 and lot 3 as shown. The well on lot'l, Block 2 will be disconnected from this line and the house on lot 1 will be served from the existing well. The existing line between tot 3~ Block 2 and lot 3 Block 1 is a l" Type K copper line. There is a shut off valve located under each house at each end of this line. The existing line between lot 3, Block l, lot 4, Block 1 and lot 5, Block 1 is a l" non-rigid plastic waterline. Lot 4, Block 1 and lot 5, Block I are served by service.valves and 3/4" Type K copper lines to the trailers, The existing line between lot 3, Bloc~ 2 and lot 4~Biock 2 is a 3/4'~ Type K copper with a valve under the house, · The existing system is located approximately as shown on the plans and is in good operating condition, 2. There are no special features in the d'~stribution system, 3.~ The distribution system will be installed with a minimum of lO~ of ~over over the distrubition lines, 4. The system will be located.in glacial till at the depth specified. Water will be stored as specified in 2. Fire protection has not been provided, H. Cost Estimates 1. Construction Well with 6" casing existing 530 lin. ft. 2" tA/L installed at SS/lin. ft, 670 lin. ft. l'~ ~N~'installed at $4/lin, ft. *18 curb stops installed at $150 each Submersible pump and riser pipe $2650 2680 2700 6O0 $8630 2, Maintenance cost estimated to be $400/year, The following minimum distances from points of possible contamination to ground water supplies will..be exceeded: ), An~contamination - 40 ft, 2. Sewers, septic tank, disposal fields - 80 ft, 3,-See page pits - 120 f.t, *Curb'qtops include service connection, Eighty two gal, tank to be installed by each builder as lots develop, hydro~pneumati c , ~ 1801 Stanton Ave. 'Anchorage, Alaska CONTRACTING ~GINEERS & ASS~ Consulting Engineers WATER SYST-D.'. CONSTRUCTION SPECIFICATIONS Phone: 279-1792 General All materials shall be of types shown on the plans and shall conform to these' specifications. All ~orkmanship shall be according to good practices of each trade. Sefety precautions shall be observed to prevent hazards to property, life or equipment through caving earth, electrical lines, flooding, fires, traffic and other potential causes. The site shall be kept free of accumulations of trash or debris from the work. Upon completion of construction the site shall be left in a neat and clean condition, graded to drain to established channels. iWATER LINES A. Materials 1. P.V.C. pipe and fittings shall be schedule 40 Type 1-1120 normal impact hi chemical resistant ~LS.F. approved or equal. 2. Galvanized pipe shall be of galvanized steel pipe conforming to AS~ specification A ~20-6~a; of galvanized wrought iron pipe confor=ing to AS~ specification A..'~2-68, standard ~eight. Joints shall be threaded and threaded couplings with ~;.P.S. threads shall be provided. 3.. Copper pipe shall be flexible seamless pipe, Type "K" conforming to AS_~%! specification B-$8-66. 4. Valves, Gate Velves shall be brass '~oay' bronze faced ~ate valves, pressure tested at 2~0 p.s.i. Service valves Shall be ~.'~ueller Co. No. H-1020~ or approved e. qual. B. Construction The ~re.'.]c}~ shall 'he excavated to the d~pth s~o;'~'n on' the plans and as - st~ked. Galvonized ~ipe shall be installed by scre:;'ing the joints tight ',vith suitable pipe wrenches. Approved pipe joint co,~pound or ~vhite lead shall be applied to a]] male ~a.e~d.~ only prior to asse.~b!inE the joint. Changes in grade or ~.l~n...~nt Of ga!v~nized ~ shall be accomplished %'Ith fitt-'_nEs and not by bending the pipe. Copper FiDe shall be inst~lled by laying it in the trench and ~ ~ ~ ass ....... ns the joints. Threaded fittings shall be scre',,,-ed on to their mating fittings before soldering. ~'~!! pipes shall b'e assembled at a joint before that Joint is soldered, and the entire joint shall be soldered at one time. PVC p~pe shall be installed and joints m,-.de as r,~commended by the .~,nufacturer and only approved materials use~!. Changes in'grade Or alignment of the P.V.C. · pipe shall be accomplished with fittinss and not bb' bending, the pipe. · Before backfilling, all newly installed water lines shall be tested for le,mks by filling the lines with water and e×amining them under normal system DisinfectiOn 1. After testing and after all le~s are corrected the newly installed water lines, well and ~ump shall be disinfected by filling with water solution containing not less than 1CO ppm of available chlorine. The solution shall be retained in the system for a Minimum of four hours and then thoroughly flushed from the system. /I ./ i DEPARTMENT OF EI~,F['R~NM~N~AL CGNSERVAT~0~ V~ILLIAM A. EGAN, GOVERNOR / ,/ROOM 222 MACKAY BUILDING 338 DENALI STKEET ANCHORAGE 99501 October 6, 1971 Mr. Glenn A, Huff Contracting Engineers & Assoc. 1801Stanton Avenue Anchorage, Alaska 99504 Subject: DEARMOUN WATER SYSTEM - AS-BUILTS Dear Mr. Huff: The as-built plans for the subject project are approved for those features with which this Department is concerned. We shall look forward to the receipt of bacterial and chemical analyses of the water. KO'C/mw cc: GAAB-DEQ Yours truly, Myle $. Cherry Regional Environmental Engineer CONTRACTING ENGINEERS & ASSOC, 1801Stanton Avenue Phone: Anchorage, Alaska 279-1792 Mr. Kyle Cherry Department of Health & Welfare Room 222, MacKay Building 338 Denali Street Anchorage, Alaska 99501 SUBJECT: DeARMOUN SUBDIVISION NO, 2 - WATER SYSTEM Dear Mr. Cherry: As discussed, this system will be constructed with the three shut off valves which will allow all three sections of the system to be shut off independently of the other two, Also, the 1'~ main south of Lot 7, Block l, which provides service to Lot 6 Block l, will be deleted. A well house will be constructed over the well to all.ow all of the electric controls to be located at the well rather than in one of the dwellings. This well house will be insulated and weather tight. It will have a daylight drain and will be electrically heated to prevent freezing, The pitless adaptor will not be used and the discharge pipe will come out the top of the casing and will be connected to the distribution header in the well house. The casing will be sealed, This should complete all of the requirements for this system. Very truly yours~ CC: ~, Rolf Strickland ' Greater Anchorage Area Borough Glenn A. Huff RECEIVEI) JUL 2 8 1971 ~iREATER ANCHORAGE AREA ~OROUOH DIVI310N OF ENVIRON,~EHTAL HEALTH /RO0?,~ 222 -- MACKAY BUILD[NG 336 DENALI STREET -- ANCHOJ~A~E June 28, 1971 Mr. Glen Ao Huff Contracting Engineers 1801 Stan~on Avenue Anchorage, Alaska 99504 Subj: DEARMOUN SUBDIvISIoN NO. 2 WATER SYSTEM. Dear Mr. Huff: With the understanding that the one inch water lines serving the un-named street connecting Mathews Drive and Donalds Street, the two inch line connected to the aforesaid one inch lines, and the two inch line serving the remainder of the project be provided with shut off valves as was discussed with you in this office, the subject plans and specifications are approved for those features with which this Department is concerned. A letter ~ agreeing to this stipulation is expected before our approval is final. Bacteriological and chemical analyses of this water must also be presented to this Department. Yours truly, Kyle J. Cherry Regional Sanitary Engineer rOC/mw cc: .Rolf Strickland" I~ECEIVED JUL 1 1971