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Home My WebLink AboutT13N R4W SEC 36 PARCEL 24 MUNICIPALITY OF ~J~J~PER, GOVERNOR DEPT. OF HEALTH & ENVIRONMENTAL PROTECTION DEPT. OF ENVIRONMENTAL CONSERVATION RECEIVED .~C,~ORa*~:~ /,,o *,_,R,.. DISTRICT OFFICE 3601 C STREET, SUITE 322 ,-~J~;iORA~, ALASKA 99503 563-6775 December 3, 1990 14r. Bruce J. Corwin, P.E. Corwin & Associates, Inc. P.O. Eox 230608 Anchorage, Alaska 99523-0608 SE 1/~., SE 1/4., Section 36, T. 13 N., R. 4 J., S.::., .~ne Palmer G. Lewis Company, ADEC Project Number 9121-DA-041; Plan Review Dear '-~* Corwin: This is in response to your submittal, received in this office on November 1, 1990, which included design plans for a wastewater disposal system to replace the existinq system that has recently failed. I have reviewed the submitted information and find that the following information is needed to complete my review. Verification in the form of results from three falling head percolation test conducted within the outline of the proposed soil absorption system to ensure that the silt found two feet below the lowest part of the proposed soil absorption system (as noted on the submitted soils log) does not violate 18 AAC 72.025(b) (D) (ii). All test results will need to be submitted under your stamp as a Professional Engineer (P.E.). The attached forms, Domestic Wast·water System Data Sheet and Domestic ¢~a,~t~;,~te~ System Owner's Statement, will need to be completed and returned. The design drawings will need to be modified to reflect that monitoring tubes will be installed at all four corners of the soil absorption bed and resubmitted to this '~=' ' O~lce for review. Verification that all State horizontal separation distances between public and/or private water sources and the proposed wast·water disposal system can be meet or the location of the water service line to the facility will need to be shown on a revised sewer system location plan submitted to this office. Mr. Bruce J. Corwin Decemb_r 3, 1990 Page 2 In closing, if the existing septic tank is less than the needed 1250 gallon capacity and a second tank, in series, is installed, please ensure ~hat both tanks are single compartment and meets the Uniform Plumbing Code regarding compartment sizing for septic tanks. If you have any questions, please do not hesitate to contact me. Sincerely, Xeven I(. ~,le.qeno Envlronmen ~a± Engineer Attachments At ~=cnments cc: John Smith, D%IHS, w/o -~ '~ KlIK/p f DEPT. OF ENVIRONMENTAL CONSERVATION ANC~{OV~G~ ~EST~RN DISTriCT OFFICE 3501 C STREET, SUITE 322 ANCHOP~GE, ALASKA 99503 WALT£R J. HIOKEL, GOV£RNQR ,. 55~-d77~ FEB 6 1931 h,!u;~!ci,b;:l;t? of Anchoi'~,ge Dep,L l'leaiLh & t'lunmn Services February 1, 1991 ~r. Bruce J. Corwin, P.E. Corwin & Associates, Inc. ~.o. DO× 230608 Anchorage, Alaska 99523-0608 RE: SE 1/4, SE 1/4, Section 35, ~. 13 ~., R. 4 W., S.M., The Palmer G. Lewis Company, ADEC Project Number 9121-DA-04!; Plan Review Dear Mr. Corwin: This is in response to your submittal, received in this office on December 27, 1990, which included modified design plans for a wastewater disposal system to replace the existing system that has recently failed. I have reviewed ~he submitted information and this office's file on this project and have the following comments. ~ased on the intended use of the facility and your assumption of the subsurface soil conditions, as detailed in the submitted data, it appears that the proposed wastewater disposal system is adequately sized (1250 gallon, two compartment septic tank and 1200 square feet of absorption area) as noted in your plans. Therefore, subject to the following requirements, the construction plans are approved for the concerns of this Department, in accordance with the provisions of !8 AAC 72, Wastewater Disposal Regulations. 1. The installation of the wastewater disposal system will to be monitored by a Professional Engineer (P.E.) will need to be ;submitted to this office. Complete as-built drawings of the wastewater disposal system will need to be submitted to this office under the stamp of a P.E. The submitted as-built drawings will need to verify soils, watertabte and impermeable strata separation, in addition, the wastewater disposal system will need to have four foot of cover. Assuming that the percolation test results submitted to this office on December 27, 1990 were done in the silt found two feet below the lowest part of the proposed soil absorption system, it appears that the silt is not an impermeable strata· However, if the silt does have a different percolation rate than reported, wastewater will follow along the contact between the silty until it ~ither daylights or contaminates an aquifer. Another possibility is that the ~roposed soil absorption system will prematurely fail as the existing soil absorption system. This approval ,Noes not imply the granting of additional authorizations, nor obligate any state, federal, or local regulatory body to grant required authorizations. ~nan~ you for your cooperation with this Department. ~,.~ ~ you have any questlons, .~[~ao~ do not ~]esltate ~o contact me. cc: ore, th, DHHS T. Sanderson KI[~[/p f Xeven K. 5,1eweno Envi£onmental Engineer