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Home My WebLink AboutVILLAGE PARKWAY ESTATES S-6302 MUNICIPALITY OF ANCHORAGE DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION ENVIRONMENTAL HEALTH CASE REVIEW WORK SHEET CASE NUMBER 8-6302 DATE RECEIVED May 3, 1982 COMMENT TO PLANNING BY May 28, 1982 FOR MEETING OF , CASE OF [~PU~BLIC WATER,J~L~.T..AVAI LABLE TO PETITION AREA ~'~UBLIC SEWER_NOT AVAILABLE TO PETITION AREA 71-014 (Rev. 2/78) - March 22, 1982 Leroy C. Reid, Jr., Box 1584-R Anehorage, AK SUBJECT: Village Parkway Estates Add. Dear Leroy, This Department has reviewed soil and orecolation test and have eome to this conclusion: ~' Prior to any approval the Department requests engineering design of s~ptie system and leach led and two alternate location wi~h soil tests in the area of c ' onstr~lctlon as to assure no tubbing caused by bedrock formation. Due to the shallow bedrock, there is also concern as to the p erection of the Water well. The Engineer can address this concern by recommendation on the distance from water well to leach bed and grouting of well caseing. ~. _ If any questions arise, please feel free to call this office. Sincerely, JL3/p/D1 John Lynn Environmental Specialist ALASKA eI1UIROF/iTI FITAL COF1TROL IrlC. February 9,1982 Mr. Alan Moor 6522 Imlach Anchorage, Alaska 99502 Dear Mr. Moor; FrOm the soils tests which we performed on your proposed subdivision we must state that shallow systems are, indicated f'6r this subdivision because of the shallowness of the soils. These soils are well dralned and wlth the large lots there should be no problems. In areas where there are very coarse 9ravels I would advise usln9 a sand base of 12-i8 lnches under the bed. If you have any questions please let me know. Sfncerely; President P£ POUCH 6-650 ANCHORAGE, ALASKA 99502-0650 (907) 264-4111 TONY KNOWLES, MA DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION March 22, 1982 Leroy C. Reid, Jr., Ph.D. SRA Box 1584-R Anchorage, AK SUBJECT: Village Parkway Estates Add. If any questions arise, Dear Leroy, This Department has reviewed soil and precolation test and have come to this conclusion: Prior to any approval the Department requests engineering design of septic system and leach bed and two alternate location with soil tests in the area of construction as to assure no tubbing caused by bedrock formation. Due to the shallow bedrock; there is also concern as to the protection of the water well. The Engineer can address this concern by recommendation on the distance from water well to leach bed and grouting of well caseing. please feel free to call this office. Environmental Specialist JL3/p/D1 ALASKA enuIROiIIleTAL CeTI OL I~n~in¢~rin,;I ~- ~nuironm~r~!al Slu,~ks SeUIC S, IBC. April 1, 1982 John Lypm Depar~r~nt of Health and Environmental Protection 825 L Street Anchorage, Ak. 99501 Dear Jo~hn: I have reviewed your letter concerning village Parkway Estates addition ~1. I am enclosing a profile of the holes along a line that nearly foll~gs the Valley floor. Just north of the southernmost line for Lot 4 there is an apparent depression in the kedrod< which %~uld indicate a possible ponding site. I expect that it is apparent because the test hole was dry. If ponding would occur ~ne could expect to find water at the bettcm or up to four feet frc~ the bott~n of the test hole. See the attached drawings. If the %~ter wells are placed high on the ridge, the tops will be well above any possible point where sewage contaminated surface water could enter the bere b01e. As for fractures in the b~drock. I believe the_gro~und slopes are such that water would move rapidly to the south. I think shallow beds are indicated by the soils. In this case I would stick by ~, earlier recomnendaticn Cqat a sub-~d of 12-18 inches of cle~n sand be installed ~der the septic rock. All soils in the test area are in the 8~-_25 sq. ft./bedroom (sqft/br) range. I rec~q~nend that the design be based on the sand bed @ 150 sqft/br. A typical three ~rocm house would require a bed of 675 sqft. (150 x 3 x 1.5). A typical dimension with length (L) being two times width (W) would~e 18.5' X'37' Lot 4 has an available area of 13,500 sqft so there is ample ro~m for many replac~0~nts. Lot 1 may be the most critical. ~ea it has a possible are~ of 6,700 sqft. cn the top of the ridge. All other lots have a greater area. ~ ~ ~ /, Tha stand filter b~t under t~%e skmtem coupled ~.;i~ ~]e v~cal ~d ho~zon~ ~ra~on of ~]e w~ wou~d g~ work ~ ins~e a ~fe ~m. Ln ~on one ~ ~ou~ ~he w~ wi~ d~lling m~ ~ c~ ~e ~n~ ~g ~tween ~e ~g ~nd ~e ~-e h~. These lots are quite l~ge, around thr~a acres. I believe with the controls outlined and o~dners available to you, there is a reasona~e belief that tJ]~e lots co ~uld he developed with no more ~sk to health then ~ny other !o~ If you have any cfaestions please le% me know. S~ncerely, president