Toilet Facilities and Wastewater Disposal System Regulations (Chapter 2401-13)

2401-13-01 2401-13-02 2401-13-03 2401-13-04 2401-13-05 2401-13-06 2401-13-07 2401-13-08 2401-13-09 2401-13-10 2401-13-il 2401-13-12 2401-13-13 2401-13-14 2401-13-15 2401-13-16 2401-13-17 2401-13-18 2401-13-19 2401-13-20 2401-13-21 2401-13-22 2401-13-23 2401-13-24 2401-13-25 2401-13-26 2401-13-27 2401-13-28 2401-13-29 2401-13-30 2401-13-31 2401-13-32 2401-13-33 2401-13-34 2401-13-35 2401-13-36 2401-13-37 2401-13-38 2401- lJ-39 2401-U-40 2401-13-41 2401-13-42 2401-13-43 2401-13-44 2401-13-45 2401-13-46 CHAPTER 2401-13 TOILET FACILITIES AND WASTEWATER DISPOSAL SYSTEMS REGULATIONS GENEAAl PROVISIONS Authority Purpose Definitions TOILET FACILITIES AND WASTtv,'ATER DISPOSAL SYSTEMS REQUIREMENTS facilities and Systems Required Public Sewer System Public Sewer Not Availabie Temporary Toilet Facilities Public Sewer Connection Private Wastewater Disposal Systems PERMITS Permit Required Required Information Permit Automatically Void W:.Pn CONSTRUCTION STANO# ~OS General Requirements Septic Tank Capacity Private System Location and lns:a!lation Area of Disposal Fields and Seepage Pits Septic Tank Standards PERCOLATION TESTS Perco!ation Tests Required Test Procedure. SUBSUl!.fACE ABSORPTION FIELD Absmption Bed Absorption Trench Subsurface Leaching System Subsurface Seepage Fields LEACHflRD CONSTRUCTiON In Filled Ground Constructior, Standards SEEPAGE PITS General Construction Standards INSPECTION ANO CERTIFiCATE OF 0C(U~N.CY Inspections and Noti,e Final Inspection Certificate of Occupancy TEMPORARY TOILET FACILITIES (TTF) Temporary Toilet Facilities Required Construction Standards Failure to Provide Required TTF CU:ANING WASTEWATER 01SP05Al SYSTEMS, DISPOSAL OF WASTEWATER Registration Certificate Required Standards for Operation Registration Certificate Standards MAlNTEl~ANCE General Septic Tank Mainten,HKe Prevention of Odor Abandonment of System Repair, Replacemen1. Removal Grease Traps ENFORCEMENT Disposal of Sewage Prohib11ed Stop Work Orders Compliance Orders Penalties 2~01-13-47 ,~01-13-48 MISCEUANl;()US PROVISIONS Severability Repealer GENERAL PROVISIONS 2401-13-01 Authority These regulations are promulgated by the Republic of Palau Environmental Quality Protection Board pursuant to the authority vested in the Board under Section 5 of Palau Public Law 1-58 (24 Palau National Code Section 121 et. seq.) the Palau Environmental Quality Protection Act a,1d 5e.ction of Palau Public Law No. F73 (34 Paiau t---Jational Code Section 1201 et seq.), the Sewer Usi:! t. · t of 1984. These regulations shall have the force and effect of law and shall be binding on all persons whether public or private subject to.the Jurisdiction of the Republic of Palau. (•1/ectiw, May 26, 1996/ 2401-13-02 Purpose The purpose of these regulations is to establish standards and regulate toilet and wastewater dispc,sal systems, and to require minimum standards governing the design, construction, installation and oper'ation :,f toilet and wastewater disposal systems. Such standards are intended to: (A) Establish minimum standa1ds for to1:ci facilities and wastewater disposal to minimize environmental pollution, health hazards and public nuisance from such systems and facilities; (B) Protect the health of the septic tank user a "d all neighbors; and, (C) Est2.blish minimum requirements that \.-Viii ensure that wastes discharged: (1) Will not contaminate any drinking water ~upply; (2) Will not be accessible to insects, rodents, or other possible carriers of disease which may come :ito contact with food or drinking water; (3) Will not pollute or contaminate the waters of any bathing beach, shellfish breeding grounds or ~tream used for public or domestic water supply :Jurposes or for recreational purposes; (4) Will not pose a health hazar.d· by being accessible to children; (5) Will not give rise to a nuisance due to odor or unsightly appearance; and, (6) Will not violate any other laws or regulations governing water pollution or sewage disposal. (Hf,.,-1,w May 2&. 19%) 2401-13-03 Definitions As used herein, unless the context otherwise 1e•.1uires, the terms: (A) "Abutting Property" mc:-ms that property, which lies next to an·,· road, street or ea~ement in which. a public sewer is located. The boundary of the private property abutting the sewer need not physically touch the sewer easement so long as that piece of land separating the sewer easement from the ab11tting property consi,;~s of a public right of way, easement, road, or street not owned or controlled by another private owner, so th;;.t the abutting property ow,v:d would be required to obtain a private P.<1sement in ordPr w connect this propertv with that ,.,f lh,~ sewer. · (B} ··ooard" or ''.EQPB''. means the Republic of ?alau EnvironmP,nta! Qua'ity Protection Board or its duly authorized representative. (C) "Buildmg Sewer" means the extension from the building drain to the public sewer or other place of disposal. (D) "Cesspool" means ei{•:avation which receives or is i11tended to receive un~reated sewage and from which the liq~id. directly seeps or leaches into surrounding porous soil. No cesspool construction is ,1llnwed under these regula~ic.,:1s unless the Chairman ::1v,0 :- pric>r written c0n~f:' '.t for such construction ;1po11 a showing of sp"!c•::.~ ;r;itigating circ~msiances hy permit applic=111L . · (EJ "Chairman of the, Palau Environment;i.l Quality Protectio1; Board" or "Chairman" means 1he Chairman personally or th-:: Chairman's duly autho rized representative. (F} "Duplex" means a building which is designed r>xclusively for the occupancy of one family in each Ill tvvo units which are attached to each other and which are detached from any other dwelling or ,·nmrnr.rcial building. ,Cl "House Sewer or Building Drain" means that P<lrt ot the lowest piping of a drainage system which receive~ the discharge from soi I, waste, and other dr.1inJge pipes inside the walls of any building, pub I ic or private, and conveys it to the ?uild i ng ~~wer, beginning five (5) feet outside the inner face of the building wall. (H) "Individual Sewage Disposal System" or "Private Sewage Disposal System" means a system d(-•,;i"ned and installed to dispose of sewage from a ~in·g~ building or group of buildings located on one lot. Such a system may consist of a septic tank, together with a leaching field or seepage pit, or other treatment unit. (I) "leaching Field" means a buried system of open-jointed or perforated pipes, bedded in crushed rock or coral, or buried system of leaching chambers th rough which treated or partially treated sewage effluent may seep or leach into the surrounding porous soi I. U) "Person" mean~ the Republic of Palau, a stilte, a poPtical subdivision, a pub! ic vr private institution, corporation, partnership, joint venture, association, ;;rm, or company org2:1ized or existing under the laws of the Republic or of any state or country, a lessee or other occupant or property, or an individual, acting singly or as a group. (K) "Public Sewer" means c com.non sewage collection system serving more than one lot, directly controlled by public authu,,ty. (L} "Seepage Pit'' means covered pit with open jointed I ining thrc11gh which treJt!:!d or partial!·/ treated sewage eff:uent may 5eiip or. leach mto the surrounding porous ~oiL (M) "Septic Tank" me~Hb a water tight receptacle which receives the disd1arge of sewa·ge and is designed and constructed so as to retain solids, digest organic matter through a period of detention, and allow the treated liquids to discharge: into the subsoil through a leaching field or seepage pit. (N) "Sewage'' or "Wastewater" means untreated or insufficiently treated hvman e~cret:-1, food wastes disposed of through sewers; was'-, '/later; liquid wastes from residences, commercial buildings, agricultural operations, and indmt,i~, establishments or other places of assembly, 2r.d, ~uLn :.:li!uting water as may have entered the waste disposal system. (0) "Single Family Residence" meJns a building designed exclusively for oc,;:11rancy of orie family and containing only one dwelling .. miL (P) "Type l" means a toile, which is flushed with water and is connected to a public sewer system. (Q) "Type 2" means a toilet flushed with water and connected to a septic tank and leaching fields. (R) "Type 3" means a structure and excavation ior the disposal of human excreta by non-water carriaae methods and includes the terms pit privy, v . trench latrine, bored hole latrine and outside benjo. (SJ "Type 4" or "Temporary Toilet Facility" means a toilet which is a mobile self-contained structure for the disposal oi human excreta which waste is treated via chemicals, recirculation or combustion. CT) "Waters of the Republic of Palau" means all waters in the Republic of Palau, including near shore waters, off-shore waters, and. those brackish, fresh, and salt waters that are subject to ebb and flow of the tide including salt water marshes, salt water swamps, fresh water marshes, fresh water swamps, cultivated wetlands, lakes, rivers, springs, streams, mudflats, and all waters otherwise classified under the Republic of Palau Marine and Fresh Water Quality Regulations. II ff,-c1 , -, May 2G, 1996) TOILET FACILITIES AND WASTEWATER DISPOSAL SYSTEMS REQUIREMENTS 2401-13-04 Facilities and Systems Required All public and commercial residences and buildings and structures and all private residences, buildings and structures shall have toilet facilities and wastewat'?r systems as descr;bed in these regulations (l;ffe(1ive May 26, 19961 2401-13-05 Public. Sew€, System Where a public sewer system is available, all wastewater plumbing outlets from any and all buildings and structures public or private shall be connected to the public sewer system and all toilet facilities shall be of Type 1. ([lf,ctivt, Ma)· 26, 1996) 2401-13-06 Public Sewer Not Available {A) Wher; no pub::c ~ewer, int,::, ,uc:u ,v "''-'' ve any lot or premises is ava1!able. in any thoroughfare or right of wa\ ;.:1b, 1tting 5'l!d1 let .er ::ire:-nises, drainage t:;1ping from any building {.;,· structure·, public or private, shall be connected to an approved private wastewater disposal system and al[ toilet facilities shall be of Type 2 unless upon a showing of special mitigatin'g circu~dst;ahces the Chairman gives prior written consent ~ to the construction of a Type 3 iacility. (Bi The public sewer may be considered as not being available when such public sewer or any building or any exterio , drainage facility connected thereto, is loc.:i.ted more than tvvo hundred (200) feet from any p1 oposed building or exterior drainage facility on any lot or premises which abuts and is served by such public sewer. (C) Vertical Alignments - Where public sewer available to a particular building and sewer location is, ( l) more than tvventy (20) feet above the lowest floor level of tile single family residence or a duplex; or (2) more than fifty (50) feet above the lowest floor level of any other structures, pub! ic sewer may be considered as not being available. If U.•cl M~ May :!D~ 1 ~.Vi6) 2401-13-07 Temporary Toilet Facilities Type 4 facilities shall be used only in the circum stances described in Sections 2401-13-31 through 2401-13-33, inclusive, of these regulations. (Lff<'Clive May 26, 1996) 2401-13-08 Public Sewer Connection The connection of the building sewer into the public sewer shall conform to the requirements of the building and plumbing specifications set up by the person responsible for the operations of the public sewer system and any applicable rules and regula tions of the Republic of Palau. All such connections shall be made gastight and watertight. Any deviations f~cm the prescribec procedures and rr.aterial must be made before installation by the person ;esponsible for the operation of the public .sewer system. (Efie,::fr, e May 26, 1996f 24·01-13-09 Private Wasiewater Disposal Sys tems (A) Where permitted by Sections 2401 • 13-04 through 2401-13-07, inclusi•.,,:: of these regulations, a building may be connecu~d to a private sewage disposal system which complie~ with other provisions set forth in these .regul;:itions. The tyre of system shall be determin~d on the b,isis, of lo~ation, soil porosity, and gro~~d water ievel :::nd shall be designed to receive alt sanit: .. ny sevage from the property. The system, except ac; ot½erwisE· provir:led, shall umsist of a sep tic t:.<nk wit~ .;:ttiL:cnt rlisrharge int-:: a sub-surtace disposal field. (G) Where conditions are such that the abov2 system cannot be expected to functio;-, satisfactorily for commercial, agricu!tur=:il and industrial plumbing systems; far installations where ..:.ppreciable amounts of industrial or indigestible waste are produced; for hotels, hospitals, office buildings, or schools; for occupancies producing abnormal quantities of sewage or liquid wa;tes; the method of sewag€: treatment and disposal shat! be ti;st approved by the Chairman. (C) Disposal systems sh3II be designed to utilize the absorptive portions oi the soil formatio1~. Subsurface soi I disposal systems must have at least two feet of unsaturated soil between the bottom of the system and the seasonally high ground water level or bedrock. Where the ground water level extends to within eight feet or more of the ground surface or where the upper soil depth is sufficient and the underlying stratum is rock, or impervious soil, a septic tank and disposal field system may be installed. Where the ground wat:"'r level extends le-ss than eight feet below the ground surface, the method of on-site ,i ►wage treatment and disposal shall be first approved by the Chairman. · (0) All private sewage disposal systems shall be ~o designed that additional subsurface drain fields, equivalent to at least 100% of the required original system, may be i nstal fed if the original system cannot absorb all the sewage. No division of the lot or erection of structures on the lot shaff be made if such division or structure impairs the usefulness of the 100% expansion for its intended purpose. ([) No property shall be improved in excP.ss of its capacity to property absorb sewage effluent in the (]Lh.ln!ities and by the means provided in these regulations. (Fl When there is insufficient lot area or im prop,~r soi f conditions for adequat':! sewage disposal fron, a building or proposed use of the land as df'l··•rrnined by the Chairman, no building permit shal I be issJed and no private sewage dispor2I shall be 1)rf'-:l 1tted. Where space or soil conditions are < ritiul, no building permit shall be issued until .~1,g1 nee ring data and test reports satisfactory to the Ch.:ii,·man have been submitted and approved. {C,J Where public sewers may be installed at a tulun' date, provision should be made in the liou;ehold plumbing system for connection to such sev,,~r. Connection to the public sewer shall be r~iquired upon notification by the Chairman within a 5-yedr period after it is available. (H) Nothing contained in these regulatior, shall be tonstruec'. to prevent the Chairman from requiring cornpi;ance 1,~·it., higher requirements than those cont.:iined herein whe: e such higher requirements are "~~.~:~ti,.ii l::J rnai1Hc>ii\ a safe and sanitary condition. <lift•,c;,,• MJtf 2(1. -~IJ"9n) PERMITS 240·1-13-10 Permit Required No building construction, public or private, may comia1ence without first obtaining a permit from the Goa.rd certifying that tl-ie fol lowing shal I be in compliance with these Regulations: (A) Toi let foci I ities; and, m) Individual wastewater disposal system or public sewer connection intended to serve such lrnrlding. 1401-13-11 Required Information Bt•fore speci fie plans and specifications for a permit application will be reviewed for compliance with Environmental Quality Protection Board regula tions, plans and specifications shall contain the following as a minimum: (A) Vicinity Map. Plans must include vicinity map to locate property showing adjacent streets with names and other land marks that can easily locate the property where the proposed improvement is to be established. (B) Plot Plan (See Appendix, Figure 1). Plans must include a plot plan, drawn to scale, complete with all dimensions and must contain the following: (1) tDelineation of property boundaries, lot number and zone designation; (2) Delineation of public rights of way, ease ments <1nd access roads, if applicable; (3) Indication of all existing structures on the lot including their location with respect to the lot boundaries: (4) Location of proposed disposal system in relation tc. property oouridaries, pL1bfic rights of way, easements and ac.::ess roads, existing structures a,1d utilities, oth'.::r bod1<!S uf surface water, public sewer, if any and prupo;ed bui ldirig; (5) Topography of the area, showing contour lines and fl ::r; elevation of the existing or proposed · building; (6) A log of soil formations and ground water levels. (C) Description of the complete installation of: (1) Toilet facilities; and, (2) lnd•vidual wastewater disposal system or public sewer connection. The above informatton must include quality, kind and grade of mate:id!, equipn1,:nt J.nd method of assembly and installation. (0) ;{egardles,, of l:t1t: ty,,e of disposal systen, ar:;:->iied for, the i:,errnit application should bear the signature of the Director of Public Works for water availability verification, and approval for sewer connectio,1 if sewers are available. (E) Design calculation of the proposed private wastewater disposal system is required and the design must be done by a licensed specialty contractor or registered professional engineer. (Fl Percolation and water table tests for private wastewater disposal systems should be done by a registered professional engineer and such test results should bear the engineer's stamp and signature. (G) Complete septic tank and leaching field or aeration tank and leaching field design and construc tion det~ifs should be included in the building plans and specifications for private wastewater disposal systems. (H) A building permit application form, com pletely filled out with name(s) and address of applicant, job location, lot, block and tract numbers and area of lot in square feet or square meters. (I) Three (3) complete sets of building plans, one {1) for the Environmental Quality Protection Board and the other two {2) for distribution to other agencies. U} Such other information as the Board may require. 1 Location of all property lines must be verified by the Chief of the Division of Lands and Suiveys or a designated representative. [[f.-ciise M.ai• ~6. I 996} 2401-13-12 Permit Automatically Void When Any septic tank permit shall be void if the work authorized by said permit is not commenced within three (3) months after its issuance; or is suspended or abandoned for a oeriod of three (3) months at any time aiter the work I ,as commenced; provid~d that far just cause stated in 'v,riting t? the Chairman, the Chairman may allow up to a· maximum of three (3) months extension. All such extensions shall be in writing ar.d noted on" the septic tank permit and in the indivir:lu,,i wastewater records of the Individual Wastewater Program Section. 11"((1-'( "IIVI"" -~'t' 2fJ, l91.i',h} CONSTRUCTION STANDARDS 2401-13-i3 General Requirements (A} Every septic tank system, seepage pit, disposal field, subsurface absorption field, cesspool or Type 3 toilet facility (privy) shall have a substantial and watertight curbing around the top thereof to retain the earth outsi<l1° ;ind to prevent the seepage of the contents t0 the surfac<: of the earth. Every, Septic tank, see11age' pit, d;.;;poe;,,.I fie!C:, subsurface absorp i ,on rielti rir' Les?pooi •.hail l::i.ve a substantial and wa~ertight cover 'and shall have a manhole not less than 12 inches in diameter for cleaning purposes. All Type 3 and Type 4 toilet housing structures shall be constructed oi such material as will prevent access to human excreta by rodents, flies or other vectors. Every disposal system where caving in of earth is pos~ible shall be lined with concrete building blocks, ~tones, pre-casl concrete or similar durable material. Ventilation shall be provided for all Type 3 and Type 4 toilet facilities to extend outside the bultding and to be not less than six feet high, measured from ground level. All toilet seats for all toilet facilities shall have <1 close fitting cover. (B) No septic tank system, seepage pit, disposal field, subsurface absorption field, cesspool or Type 3 or Type 4 toilet facility (privy) shall be located, construc:ed or maintained so as to contaminate any potable or drinking water supply, and in no case shall any septic tank system, seepage pit, disposal field, subsurface absorption field, cesspool, type 3 or type 4 toilet faci I ity be I ocate at a horizontal distance of less than fifty (50) feet from any body of surface water or marine water. No septic tank system, seepage pit, disposal field, subsurface absorption field, cesspool, Type 3 or Type 4 toilet facility shall be constructed or maintained less than five (5) feet from the boundary line of the property on which it is located. (Effecti..,.. M•r l6. 19%) 2401-13-14 Septic Tank Capacity (A) The net volume or effective capacity below the flow line of a septk tank, for flows up to 500 gpd, should be at least 750 gallons. For flows between 500 and 1 500 gpd, the capacity of the tank should equal to at least·l-1/2 days sewage flow. The I iqu id capacity and sizes of septic tank as determined by the number of bedrooms or duplex units in any dwelling occupancies shall be as established in Tablf !, "Guidelines for Cori~truction of Septic Tank: Liquid Capacity". TAl:LEI GUIOELINB fOR (ONSTR\.'(HO~• OF SEPTIC TANK: liQUIO CAPACITY Number of Bedrooms 2 3 4 5 6 Source: Recommended Recommended Recommended Sewage flow Minimum Tank Minimum Inside (Callous} Capaci!y Tank DimMsion GPO (Gallons) (l x W x D) 480 750 6' X 4' X 6' 720 l,080 • 7'6" X 4' X 6' 960 1,440 7' < 6' X 6' 1,200 1,1100 7' X 7' X 6' I 440 },l60 7' x 7' X 7' Manual of Septic Tank Prao,ce.- U.?, Department.of Health; Education and Welfare. Public Heaflh Service Publication 1526. (B) For Large Septk. Taiikl-'.~fn° flows between 1,500 and 15,000 galida'{'.-thi:: miniMum tank capacity shou!d b-t' equal to ·, 25 g,dl!1r,s plus 75% of daily sewage flow. fhe formu!a V ~ 1,125 + 0.75 Q may be used, where value Vis the net liquid flow in gallons. Table ll, "Quantities of Sewage Flow" may be used to determine average flow per day for determining size of iarge septic tanks. Example: A mote/ providing bath. toilet, and kitchen facilities is 10 serve a maximum of 80 persons. Oete,mine the capacity a11d dimensions of the ser,i,c tank ne'i:ded. Table (I indicares 50 gal of sewagt per -::apita per day, or a weal of •,!.OOG gal. This is Q in the fo1mula. Then V - 1,125 + 0-75 X 4 ',}O ~ 4, J 25 P-aL There are 7.48 gai in a cubi. foul. Then 4,125 + 7.48 - 552 cu fc. A tank 5 Fi deep (liquid), 7 ft wide, and 16 fr long will pm· ,de r,r,o cu ft, 2401-13-15 Private System location.and Instal lation (A) No part of the system shall be located so that it is nearer to any water supply than outlined in Figure 2 (See Appen,dix, Figure 2) and Table 111, or so that surface drain~ge from its location may reach any domestic water supply. The distances given in Figure 2 (See Appendix, Figure 2) are the minimum distances to any water of the Republic, property I ines, dwelling, school, public building, or a building used for commercial or industrial purposes or a place of assembly. TABLE II QUANflTIES OF SFIVAGE FlOW Type of Establishments 5111,111 dwellings and collages wilh seasonal occupancy Single-family dwellings Mullipll'-family dweflings fapartmenlsl Gallons per person per day 50 75 60 Rooming houses 40 Boarding houses 50 Addirional kitchen wastes for nonresident boarders 10 Hr,tpl, wi1hnu1 private balhs 50 H111,•I< wi1h private IJaths (2 persons per room) 60 R,·,1.,,,.-Jn!s [toiler and kitchen wastes per patron) 7-10 R,.,1,111rants [kitchen wastes per meal i,ervedl 2-1/2-3 c\tld~llilll.11 for bar,;. and cockfaif foung.P~ 1 11 1•••1"-I c :11np-:. (U- l:rJfler parb wilh ccnttal r,.:~hlviuse 35 l11u,'.·-.-~a rourls or mohile•home par~s wi1n indnridual IM!~1 u1llb 50 R,•vl(I ,·.unµ, (night and day) with hmi,~,,• plumi.ing 50 l.uxury c.,mp, 100-150 \ h,rk or con~1ruction camps bemip2rma,,enl) 50 Day CJmps (no meals served) 15 O.iy school without cafeterias, gymo~siums 1r showers 15 O,iy schools with cafeterias hut w ithou• gymnasiums or showers 20 O,ty schools with cafeterias, gymnasiums, and showers 25 Boarding schools 75•100 D.iy workers at schools and offices (per shifl) 15 Hmpi1.1b 1 S0-250f h1,1itu1iott~ other than hosµ,1als 75-125 r,1<:1ori,•s (gal µer pers.on per shift, excbsive of industrial wastes) 15·35 Pirnie parks (loik;t wastes only, gal per picnicker) 5 Pin,ic parb with h~lhhouses, showers, and flush toilets !O Sw111u11111J.!. pool, ,md l:~thhouse lO Luxur\' re,ick•nces and estates · !00-150 Cnu;,t,y 'clubs (per resident rr.ember) 100 • C<,un:rr duhs (per nonreside1,1 ltil'mher prescnli 25 ,, 1i1IP~~ lpt·r ~1t•!.~ :-.;l-1ce} 40 Mr··•·is with l)ath, toilet, a.-,d kitchen wastes 50 Drive-in theaters {per car Ipace) 5 Mnvit• !heaters (per auditorium seat) 5 Airports (per l}assengerl 3-5 St•lf...,..rvice laundries (gal per wa~h. ie , oer customer) 50 Stores {per toilet room] 400 <;,,rvin• SI at ions (per vehicle served) 1 O Source; Manual of Septic Tank Practice, Public Healih Service Pub. 526 Municipal and Rural Sani1a1ion 61h Edition. {B) Suggested locations of tanks and disposal ,,,•id, un varying ground slopes are found in Figure 2A (See Appendix, Figure 2A). (C) Location shall be such as t0 provide not less thJn the stated minimum distances in Table Ill. 2401-13-16 Area of Disposal Fields and Seepage Pits The minimum effective absorption area in disposal tields in square ieet ot leachfietd bed, shall be predicated on the required size of septic tank for the 1yp<' of soil percolation .rate as established in Table IV, ''Guidelines for Construction of Septic Tanks and leachfields on Palau" and Table V, "Minimum Leachfield Sizes". (Effective May 26, 19961 TABLE Ill MINIMUM SAFE DISTANCES IN Fur To Tu h Front Scplit Al)S0rpl ,on Ali,orption Tank B,·d Field Any waler of the Republic 50' so· so Any dwelling, school, public building, or a building used for commercial or industrial purpose !O 20 2( Property boundary I ines 5' s· 5· Water lines 10' Wells 50' 50' SC 2401-13-17 Septic Tank Standards (A) Septic tank design shall be such as to provide access for cleaning, adequate volume fo, ,etting. and for sludge and scum storage (See '\ppendix, Figures 3 and 3A). The structural design sha:! p;ovrde for a sound durable tank which will sustain all loads and pressures and wiil resist corrosion. (B) Location shall be such as to orovide not less than the stated distances in Figure 2 (See Appendix, Figure 2) and Table Ill. (C) Liquid capacity shall be based on the number of bedrooms proposed or reasonably anticipated and shall be at least as required in Table !. (1) The liquid depth of the tank or compartment thereof shall be five (5) feet ,rnd not more than six (6) feet. A liquirl depth greater than six (6) ket shali not be considered in determining tank capacity: (2) No tank or compartn:~r.1 there0f sLJ!l-·h;;v1:, an inside hotizontal di men~ ion of less, thJil fcur (4) feet or 48 inches Scum storage shall equal 15% of the total liquid depth and shall be measured from the top of the I iquid level to the vertical top of the inlet tee and outlet tee excluding the one (1) inch high air space at the top of the tank In no case shall this space be less than seven (7) inches in height; (3) The vertical leg of the in let tee shall extend not less than six (6) inches below the liquid surface and above the liquid surface as required in (0)(2} above. (D} Inlet and outlet connections shall be sub• merged so as to obtain effective retention oi scum and sludge. The inlet invert shall be at least three (3) inches above the outlet invert. (E} The vertical leg of the outlet tee shall extend upward to within 1 inch of the underside of the cover and downward to a point which is 40% of the liquid depth below the liquid surface. When a partition wall is used to subdivide the tank, it shall have a 4 inch diameter minimum opening, with the same invert elevation as the tank outlet (See Appendix, Figure JA). The partition wall opening shall have an outlet device equivalent to the tank inlet or outlet, so that outside air can enter both sides of the partition. (F) When multi-compartment tanks are used, the volume of the first compartment shall be equal to or greater than that of any compartment (G) Access to each compartment of the tank shall be provided by a 18" x 18" minimum manhole or removable cover. The inlet and outlet tee connections shall al5o be accessible through properly placed manholes, handholes or by easily removed covers. (H) Where the top of the septic tank is below ground grade level, manholes shall be built up to ground gra<ie level. (I) The wall of the tank shall not be less than 4 inches thic!; reinforced concrete pour~d in place, or !ess than 8 inches thick load bearing cuncrete hollow block reinforced ac every 16" on center laid on a solid foundation and mortar joints well filled, plastered with 1/2 inch concrete mortar in the inside of the tank. The tank covers and floor slabs sha(( be not Jess than 4 inch thick reinforced concrete. Septic tank covers may either be poured-in-place or pre-cast. The minimum compressive strength of any concrete septic tank wall, top and covers, or floor shall not be less than 2500 psi (pound per square inch). Ul All septic tank covers sh al I be capable of supporting an earth load of not less than 300 pounds per square foot where the maximum coverage does not exceed three (3) feet. (Kl After the completion of the septic tank, the inside shall be cleaned and all forms removed, before occupancy permits will be issued. (E!fectise /l.1J, 26, 19%1 TABLE IV Number of Bedrooms 2 3 4 5 GUIDfUNi:S .•OR CONSTRUCTION OF SEPTIC TANKS AND LEACHFIELDS IN PAtAL Wastewater Flow {GPDi 4ll0 750 960 1,200 1,440 Septic Tank Capacity (Gal) 750 1,080 1,440 1,800 2,160 Percolation Test Rate l II - 5 min 1" - 10 min 1" - 15 min 1" - 30 min 1" - 45 min 1" - 60 min 111 - 5 min 1" - 10 min 1" - 1 5 min l" · 30 mb j .. 45 ,nin 1" - 60 min 1 u - 5 min 1" - 10 min 1" - 15 min 1" • 30 min 1" - 45 min 1" - 60 min 1". 5 min l" - 10 min 1" - 15 min 1" - JO min 1" - 45 min l" - 60 min 1 n - 5 min 1" - 10 min l" - 15 min l" - 30 min 1" - 45 min l" - 60 min Required Absorp tion Area (Ft2) 250 330 380 5JO 600 800 32R 450 54."" 80(.; 900 l,200 436 600 738 1,070 1,200 1,600 436 600 738 1,340 1,500 2,000 660 900 1,100 1,600 1,800 2,400 TABLE V MINIMUM LEACHFIHD SIZES No. u! Bedrooms 3 5 Daily Sewage Flow (GPO} 480 750 960 1,200 1,440 Tank Capa city (Gals.) 750 1,080 1,800 2,160 PERCOLATION TESTS :!--l-01· 13-18 Percolation Tests Required Percolation Test Rate 1- 5 Min. 1-10 Min. 1-15 Min. 1-30 Min. 1-45 Min. 1-60 Min. 1- 5 Min. 1-lOMin. 1-15 Min. 1-30 Min. 1-45 Mh. 1-60 Min. 1- 5 Min. 1-10 Min. 1-15 Min. 1-30 Min. 1-45 Min. 1-60 Min. 1- 5 Min. 1~10 Min. 1-15 Min. ·1 -30 Min. 1-4'., /,1in 1-60 t,/;n 1- 5 Min. HO Min. 1-15 Min. 1-30 Min. 1-45 Min. 1-60 Min. The ,1bsorption areas or disposal field and ,, ••\)clgP pHS for individual residences whenever 1ppl1( dble shall be computed or determined from r.:lii,, 1\1. tBl The proposed site shall be subjected to 1wrcolation tests acceptable to the EQPB if it is dPlerinined that the absorption quality of soils are othe1· than those shown in Table IV. Required Leaching Field Absorption Area Dimension Absorption (Gal/Ft2/Day) (W x Ll Area (Ft2) 12' X 21' 250 18' X 20' 330 18' X 22' 380 Trench 500 System 600 Required 800 2.2g/da. 18' X 19' 328 1 .6g/da. 18' X 25' 450 1 .3g/da. 18' X 31' 545 0.9g/da. Trench, ~oo 0.8g/da. System 900 0.6g/da. Required 1,200 18' X 25' 436 18' X 34' 60() 18' X 41' or 24 X 3 738 Trench 1,070 System 1,200 Required 1,600 18'x31' 545 18' X 42' 750 24' X 38' 924 Trer-ch 1,070 System 1,500 R~q ::ired 2,00(, 18' X 37' 660 24' X }8' 900 30' X 37' 1.100 Trench 1,600 System 1,800 Required 2,400 ( l) For individual lots, one ( l) percolation test per lot is required as a minimum, provided the soil is uniform and of one type. Where the soil is not uniform or there is more than one type of soil on the lot, one percolation test is required as a minimum at the center oi each variation or type of soi I of significant size. (2) For subdivisions or multiple lots, one percolation test per acre is required as a minimum for each area consisting of uniform soil of one type. ((ffed~\e- MJf ?6, i 'N{11 2401-13-19 Test Procedure. All percolation tests required should be performed in accordance with the following {See Appendix, Figure 4): (A) Dig or bore the holes with horizontal dimensions from 4 to 12 inches and vertical sides to the depth of the bottom of the proposed absorption device. Holes can be bored with 4 inch diameter port-hole type auger. (Bl Roughen or scratch the bottom and sides of the holes to provide a natural surface. Remove af 1 loose materials from the hole. Place about 2 inches of coarse sand or fine gravel in the hole to prevent bottom scouring. {C) Fifi the hole with clear water to a minimum depth of 12 inche~ over the gravel. By refilling o; by supplying r1 surplus reservoir of water (autom2tic siphon), keep water in hole for at least four hours, and preferably ovH,1ight. In granular soils, Le., GW, GP, SW, or ~;p classified according to the Uniiied Soils Clas:,ification System," the test can be made after the vnter from one filling has seeped away. (D) , Percolation rate measurements should be made on the day following the saturation process, except in sandy soils. (E) :r water remains in the test hole on overnight saturation, adjust water level to a depth of 6 inches over the gravel. From a fixed reference point, measure the drqp in water level at approximately JO minute it:\:erval~ 0·1r:; a 4-hour period. The drop which O'X'J:.; ouring ·:,e final 30-rninute period is used to calcl !htf' th?. perco! atton rate. It must be nt~ted chat ,f J c.,d ur :ite i-:: d~termined to be poorly d;·ained with an -31-c.ompa,ying high water table, it is unsuitable regardless of percolation test data. (F) If no water remains in the hole .after over night s.:iturati0n, add clear water to a depth of about 6 inches over the gravel. From a fixed reference point, measure the height of the water surface at approximately 30 minute intervals over a 4-hour period, refil:ing the hole to a depth of 6 inches when the percolation rate indicates the hole will run dry before the next reading is made. The drop \vhich occcrs during fr;e final 30-minute period is used to calculate the percolation rate. It should be noted that ir <l hole must be refilled to obtain a final 30-minute reading, determine from the previous reading the water level drop during that interval and add water unti I the level above the bottorn equals this figure plus 0ne-half inch. Continue the test, measuring the drop during the final 30-minute period. (G) In sandy soils, or other soils in which the iirst six (6) inches of water seeps away in less than 30 minutes, after the overnight saturation period, the time interval between measurements can be taken as 10 minutes and th~ test run over a period of one hour. The drop which occurs in the final 10-minute period is used to calculate the percolation rate. (Effective May 26, 19%) SUBSURFACE ABSORPTION FIELD 2401-13-20 Absorption Bed Where percolation rates are faster one inch per thirty (30) minutes and soil characteristics and site conditions are acceptable to the Chairman, an absorption bed system may be installed. (See Appendix, Figure 5). (Effective May 26, 1996) 2401-13-21 Ab~orptior, Trench Where percol.~•ion rati~,- are one inch per thirty minutes or slower Lui faster than one inch per sixty minutes and all other soil conditions and site characteristics are ~' :ceptable to the Chairman, an absorption tr,ench system may be installed. (See Appendix, Figure 5). Minimum required absorption areas are given in Tables IV and V. For a bed type system this represe1,ts the floor area of the bed. For a trench type system this represents the bottom area of the trench. The standard trench width is three feet. •~ffective May 26, 19961 2401-13-22 Subsurface :..e,v:hir>g System Subsurface '.eachins svs•f::rn. if found to be applicabl'= by a percolatior. t1;;st, should be designed and constructed in accordance •.•vith Table IV and Table V, and the minimum distances given below shall be used when determining where the disposal field can be located: (Al Sources ot domestic water supplies . . 300 feet (BJ Water of the Republic ...... , . . . . 50 feet (C) Dweliings: (1 l Sepiic Tank . . . . . . . . . . . . . . . . . . . . 1 0 fP.et (2) Leaching system . . . . . . . . . . . . . . . . 20 feet (3) Privy .. , . . . . . . . . . . . . . . . . . . . . . 20 feQI (0) Property Lines . . . . . . . . . . . . . . . . . . . 5 feet (E) Wells . . . . . . . . . . . . . . . . . . . . . . . JOO feet Nole: Whe:r exisling wells are involvl?d r;r exccpHonally coarse soil fo,mations Jre encounlered, lhe JOO foo1 distance from any water sup1lly shJII be e. ,aJua1cd ,ind ;eparatlons maintained in accordance with !he recommendations of 1he Chairman. (flfec1,,e May 26. 19%) 2401-13-23 Subsurface Seepage fields Subsurface seepage fields (leachfield), if found to be applicable by percolation test, shall be designed and constructed in accordance with Table IV and V, and the minimum distances given below shall be used when determining where the disposal field can be located: · {A) Sources of domestic water supplies .. JOO feet (B) Water of the Republic ............. 50 feet {C) Dwellings ..................... 20 feet (0) Property lines .................... 5 feet (El Wells ....................... 300 feet distribution lines shall be taid with approved pipe with water tight joints on natural ground or com pacted fi IL TABLE VI SUBSURFACE leACHING FIRD CONSTRUCTION DETAllS Bed Trench Unit Max. Min. Max, Min. When existing wells are involved or exceptionally coarse soil Number of 7 2 8 2 formations are encountered, the 50 foot-distance from any waler Distribution supply shall be increased in accordance with the recommenda- Drain Lines 1 ions of the Chairman. I Ufc>et "r May 26, 1996) LEACHFIELD CONSTRUCTION 2401-13-24 In Filled Ground No person may construct Jny portion of any 1eachfield 111 filled ground witnout the prior written ,tpproval of the Chairman. '! lft'Cbvc• May 26. 1996) 2401-13-25 Construction Standards All leaching fields shal I be constructed within the tnllowing standards: (A} Distribution drain lines shall be constructed , ii ;)erforated PVC pipes or perforated clay pipes, C'Jncrete or fiberglass leaching chambers or other mprcved materials may be used, provided that ;t-fficient openings are available for distribution drain 1;1-,:-;; of the effluent into the .!1:.ach bed area. , R) !iefore placing filter material, leaching .:hc1,nb';rs or drain lines in J.-~;rep:.Ji"ed <Jxe,-:vatior,, ~di smeared or compacted surIaces shall be ;,~moved 1r~1m leaching bed area by.raking to a depth of 1-inch rnd the loose material removed. In standard ur)ri,nated pipe/filter mat~rials leachfields, clear ~tone, gravel slag or similar filter material acceptable (} ilw Chairman, varying in sizes from 3/4" to 2-1/2" hal I be placed in the trench or bed to the depth a!1d c'.rade required in Table VI and Figure 5.(5ee ..\JJpendix, figure 5). (C) Drain lines shall then be covered with filter material to the minimum depth required on Table VI ,ind this covered with untreated building paper, straw, or similar porous material to prevent closL:re of voids with earth backfill. No earth backfill shall be 1ilaced over the filter material cover until after ,nspection and acceptance by the Chairman. (D) Leachfields employing leaching chamb2rs ,h,il I be ronstructed in accordance with the leaching , h,rn1bers' manufacturer's recommendations and/or as directed by the Chairman. (E) Connections between a septic tank and main Distance feet from drain line perimeter of leachfield Length of feet Leachfield Width c-f feet '-earhfield Depth 0i cmrse material: U11d,,,- pipe inches {Mmrmum) ove,pipe {Minimum/ Toral (Minimum) inches inches S tze of coar.;e inches m,.:erial Depth of inches backfill over coarse material Distance bet. dr;iin 'ine:, (ce,r~e- tr C:.!.••·...,, 3 3 1-1/2 iOO 21 50 12 3 6 6 2 12 12 2-1/2 3/4 2-1/2 3/4 36 12 36 12 6 (j ~fote:. t~.:ep,ion ,,, the above table may bt: <,.;;d,:• bv E0PC ,,fa·· soil conditions warrant. (F) Disposal or leaching field sh al I be con structed as fol lows: Minimum number of drains .............. , ..... 2 Maximum length of each line ................. 52 fet>• Minimum bottom width of leachbed . . . . ....... 12 feel Maximum bottom width of leachbed ............ 42 iee, Minimum bo!tom length of leachbed ............ 21 foe· Maximum bonom leng,h oi leachbed . . . 57 fr,,-· Maximum spacing of dr,1in lines center 10 l·enter , ... 6 iee>: Preferred depth of cover or lines . . . . . . . 24 irn ' Minimum depth of earth cover over line~ . . . . . . . 18 int+ Minimum filter material under drain line~ . , .. , , . 6 int~ Minimum filter material over drain lines . . . . . . . . . . 2 inc· Minimum Total Filter Material . . . . . . . . . . . . . . . . 12 inn, Maximum grade of lines . . . . . . . . . 6 inches R,er 100 fep• Minimum grade of lines . . . . . . . . . . 3 inches per 100 fe('-' (G) Notwithstahding the requirements set forth in Division F of this Section: (1) When perforated pipe is used it shal I be laid level and the end of the line capped. (2) Where leaching beds are permitted, distribu tion drain lines in leaching beds shall not be niore than six (6) feet apart on centers and no part of the perimeter of the leaching bed shall be more than three (3) feet from a distribution drain line. (3) When necessary on sloping ground to prevent excessive line slope, leach lines or leach beds shall be stepped. The . lines between each horizontal section shall be made with watertight joints and shall be utilized to the maximum capacity before the effluent shall pass to the next lower leach line or bed. The lines between each horizontal leaching section shall be made with approved watertight joints. 1;Hfl"(·1i""'r 1\-t..ar 26, 199M SEEPAGE PITS 2401.-13-26 Ge:r1eral (A) Seepage pits may considered to be used to supplemer>t the subsurface disposal field or in lieu of ::..uch field where conditions favor the operation of s~epage pits, as may be found necessary and approved b)' the Chairman on a case-by-case basis. (See Appendix, Figure 6). {B) Care should be taken'to avoid extending the ~eepage pit into ground water table. Where the pit 1s used to receive the septic tank effluent, the same limitations established on Table Ill shall govern the location of the piL 1rneoiw May 26, 1 q%) 7.4-Di-, J-27 Construction Standards (,A 1 T!i,.:, :c:-:pa,ity cf seepage pits sh;:,11 be such as based on the qt;dnrity of liquid wast,~ discharging thereunto, and on the character and porosity of the surrounding soil and shalf conform to the guidelines ,~stablished in Table IV and Table VII. (G) Use of seepage pits with septic tanks is acceptable only when soil conditions or topography are appropriate, and only with the approval of the Chairman. Seepage pits are not acceptable in limestone areas no:· in localities whe,e shallow wells are used. (C) When more than -:me seepage pit is used, installation may be operated in series or in parallel. If operated in series each pit shall be equipped with dn inlet tee 01 ell. Ii operated in parallel a tee, wye, nr distribution box shall be used. An outlet tee or ell ,hall be raised to prevent scum from floating into the second pit. (See Appendix, Figure 6).' (D) Effective absorption area of a seepage pit shall be calculated as the side area only below the inlet, exclusive of any hard span, rock or imperme able clay soil layer. Required seepage pit size shall be determined from Table IV and VI!. (El A m1n1murn depth of 4 feet of porous formation shall remain or be provided at the bottom of each pit. Pits less than 20 feet deep shall have an inside diameter established on Table VII. No pit exqwation shal I extend into the water table. Where ground water is encountered the bottom of the pit shall be backfilled with clean coarse sand at least 3 feet above the water table. (See Appendix, Figure 6). TABLE YII GUIOEUNES FOR SIZES Of SEEPAGE PITS Seepage Pit Dd - A No. of Pits Diameter Depth fl. 1 2 2 2 1 2 2 3 3 4 2 2 2 3 3 4 2 2 3 4 5 5 2 3 3 4 5 6 6' diameter 8 'diameter B' diameter 6' diJ111et'-'r 3' diameter B' d,Jmec~r E' diame1er 6' diameier &' diJmeter 6' di.1ne1~r 6' diar,•(!ier 6' diJmeter 6' diameier 6' diJmeler B' diameter B' diame1er 8' diameter 8' diameier 6' Oiameter 8' :Jiameter 8 · .,:iiame:f:r s· tlic1m,,,~r 8' diar:1e1er 8' di~meter II' d,Jmeter 6' diameter 6' didme1er a· di.m1e1er 8' diJmerer a· diame1er 14' - O" 13' - 6" 15' - 6" 13' - 6" i 2'. (l' ! 3' - 6. 17" "6" 12' - O" i4' - 6 \4' - 6" 16' - o· 16' - O" 12' - O" 16' - O" 15' - o· 14' - 5" 16' - o· 16' - o· 14' - 6" 15' - o· 12' - 6" 13• - &· 12' - 0 16' - o· 13' - 6" 1&· - o· 14'. - 6" 16' - o l4' • O" 14' - O" Nole: I. If '"·CJ {11 ,nc,re ''.'Cpd~e pits dtt• l1~1ng used as .i !eaching pils. the distance lfelween seepag~ 11it should he at least 3 1imes the chamei~r ui seepa~e pits. 2. Minimum dis1a~ce 01 al le.isl 20' it. for pit; over 20' f1. m deplh 3. St~i.:p..Jgl' pih ~h-iuld -~ul he U\t'd wh1.m pe.•r..:-ol.;~ •Jil r.-:ites. arc fess th.an r" - (lO min. (F) Pipe with tight ioints shall be used in connecting the septic tank to the pit. (C) All seepage pits shall be either lined or rilled with coarse stone. The lining may be brick, stone, block, or similar durable materials, laid in cement mortar above the inlet and with tight butted joints below the inlet. The' annular space bet,;een the lining and the earth wall shall be filled with clean 3/4 inch crushed rock or gravel. Where caving is possible, seepage pits shatf be lined with concrete building blocks, stones or pre-cast ring or similar materials. (H) Provide for each pit a 4 inch thick concrete top, not less than 12 inches or more than 18 inches in diameter or of equal area for inspection and c:!eani ng purposes. The top sh al I bear on at least 12 inches or soil around the pit, or on "top of the pit wall. The top shall be not more than 18 inches below the finished grade. (I) All brick or block used in seepage pit construction shall have a minimum compressive strength of twenty-five hundred (2,500) pounds per square inch. (j) The bottom of the pit is not ..:ornoacted for ,hse,rption. It should be noted therefore th;t a 6-foot dir,;11etP.r pit has 28.26 square feet of absorpt10(1 area pe1 i"oot cf depth while an 8-foot-diameter pit has .: 'i., 0 ! .::qua re foot of wall area per f0ot of derth. · 11!1, 11'.t ~t,1y ih. J{JC)!)) INSPECTION ANO CERTIFICATE OF OCCUPANCY 2401-13-28 Inspections and Notice (!',) Each project shall be subject to regular inspections by representatrves of the Environmental Quality Protect1on Board to asst.ire that construction of septic tanks, leaching fields, seepage pi1s, dispo5:1I fields, subsur:,Ke absorption fields, toilet facilities ar·.d cnnnections to 11ubiit sewers and any and all othei ~r~lated cc1 btn •,: •011 i~- in compliance with apprcved pl.ms ang spedficat10ns, and in accordanu' ,vid·, the Environmental Quality Protection Board reguladons. (B) The EQPB must be notified twenty-four (24) hours in advance of any concrete pouring and all such concrete work must be performed in the presence of an EQPB Inspector. (C) All construction work such as septic tank or "''~page pits, and leaching field installation must be inspected by an EQPB inspector prior to covering or nmcealment. :11 ) F.1ilure to comply with the requirements of 1h1~ Section may result in unnecessary delays to the prowtt or a suspension of work or denial of a C('ri1ficate of Occupancy and an order to remove or uncover portions or a!! of the offending structures U:!11•t L111~• M,W l&, 199&1 2401-13-29 Final Inspection Airer completion of the project, final inspection by lhe EQPB shall be conducted on these disposal systems, sewer connections and toiret faci Ii ties to ensure that the work was performed i 11 accordance with the approved plans and specifications issued as part of the permit and that EQPB regulations and requirements are met. (f/feaive May 2 6, 1;996) 2401-13-30 Certificate of Occupancy After a final inspection satisfactory to the EQPB has been performed on the project pursuant to Section 2401-13-29, and said inspection indicates that the work performed was done in accordance with approved plans and specifications and has met al I EQPB requirements, the Chairman shall issue a Certificate of Occupancy. (Efl,ai,.e May 26, 19961 TEMPORARY TOILET FACILITIES (TTF) 2401-13-31 TP,mporary Toilet Facilities Required Tempora, l Toilet Facilities (TTFl, also kno-.vn as T}'Pe 4 toilet facilities, shall be provided for: (A) Any ,:onstruction job-site where work 1,.,· toilets connected to an approved type sanitar~ disposal system are insufficient or unavailable or such facilities are determined to be not readily available for the needs of the employees; (B} The number of facilities required, whether permanent, temporary or combination thereof shall be in accordance with the requirements detailed in Table VIII. ' (C) The t2,m reacL!,1 available as used in Division/\ of this SP.ctio:i shall be defined as bein5 wit hh :;oo feet of t',e wori< are.a. Facilities which,.>' witr.in this distaPce but ar~ not under the direct control of the developerfcontractor shall require a written authorization/certification from the owner of such facilities that unrestricted access to these toilet facilities will be available to the contractor's workers for the entire period of the construction project. (D) All arrangements for sanitary facilities must be made anJ in place before <1.ny clearing or construction may proceed. J(f/e,:tiv, May 26, 19%) 24Cl1-13-32 Construction Standards (A) Temporary Toilet Facilities rnay be chemical. recirculating or combustion providing they compl) vvith existing Palau Codes. (8) The minimum number oi TTF required ior construction site shall be based in accordance with Table Viti. (C) Any construction site requiring EQPB approval fo,r permitting will provide proof that. the minimum required number of toilet facilities are available or will be available for the period of time that the permits are valid. (Effective May 26. 19%) TABLE VIII NUMBER OF TTf R.EQUIRED FOR CONSTRUCTION SITES No. of Employees 1 to 15 16 to 30 31 to 51 52 to 72 73 to 93 Over 93 Minimum Numbers of Units 2 3 4 5 1 Add'\ unit per 20 employees 2401-13-33 Failure to Provide Required TTF In addition to any other remedies provided by law, J11,, construction site not complying with the n ,ini1nurn number of TTF will be given a written \v;:irning and given 48 hours to comply, Failure to comply within the given period will result in the revocation of the EQP8 approval required for t;-,e bu1iding permit which wilf temporarily suspended all construction at this site. it•i,;<:tive M~y 26, 1996) CLEANING WASTEWATER DISPOSAL SYSTEMS ANO DISPOSAL OF WASTEWATER 2401-13-34 Registration Certificate Required i\JO person shall engage in the business of cleaning ifl,:fivii:, ia! se·.•1age dispos:.i! system~ or disposing of the wasie; theiefrcm u;,less a Registratwn Certific.;tc has fo;;t been secured from the EQPB. lEfft<!iVC May 26 19961 2401-13-35 Standards for Operation Such cleaning and/or disposal operations shall be conducted in conformity with the fol[owing require ments and in accordance with all applicable regula tions·: (A} The name and address of the person, shall be legibly lettered on both sides of each vehicle used for c!eaning purposes; (B) Every vehicle used for cleaning purposes shall be equipped with a watertight tank or body and be maintained in a dean and sanitary condition. . Sewage waste shall not be transported in an open body vehicle; (C) All portable receptacles used for transporting liquid or solid waste shall be watertight, equipped with tight-fitting lids, and shall be cleaned daily; {D) All pumps and hose lines shall be properly maintained so as to prevent leakage; (E) Approval in writing shall be obtained from the Chairman for every site at which the person plans to discharge the waste material collected. The approval may be given after consultation with the Bureau of Public Works; {F) The hose or any similar device used for discharging waste must be inserted into the ear marked manhole to a depth of approximately two (2) feet, to prevent any spray or spillage into the surrounding area; (G} Every precaution must be taken to prevent any public nuisance or health hazard which may be caused by the cleaning and disposal operations service. (fi/ective May 26, 1996) 2401-13-36 Registration Certificate Standards (A} A registration certificate shall be issued ,o any person pmpedy t':"\aking application therefor, who is not les: thd:-t twentr-one (21) vears of age, has successfully demonstrated the ability to handle the equipment, and only after the place or places and manner of disposal of the cleanings proposed by said applicant"are approved by the EQPB. (B} A certificate issued pursuant to this Section is not transferable and shall expire December 30th of each year. A certificate may be renewed for an ensuing year by rnaking application for renewal, upon determination of the applicant's observance 0f sanitary laws, orr:linance, and directions. Such applic;:ition s'.ialt hav~ the effect of extending the validity of the current registr;;,tion certificate until a new (8itific:at(:: is is~u~d or the renewal of riw ~egistration is deni ;d by the EQPR. (C) Non-comp! iance of the requirements of these regulations may result in the revocation or suspension of the r~~gistration certificate. Any applicant whose registration certificate is suspended must correct all discrepancies noted in the suspension within 30 days, otherwise the registration certificate may be revoked. (D) Reg;:;tration under these regulations shall not be constru ~d as impairing in any manner, the existing powers and duties of the other r.ational government age·,ci~s of tht::: Republic oi Palau or the state governmer,ts of the Republic of Palau under other laws. ([<10<:1,ve May 2&. I~%) MAINTENANCE 2401-13-37 General {A) Toi let facilities, v,•astewater disposal systems and connections from the building drain to the public sew1:r shall be maintained at all times in- good repair and in a clean and sanitary condition. (B) The owner of the property is primarily responsible for the completeness of all structures, good repair, cleanliness and maintenance of the toilet facilities, wastewater disposal systems and connec tions from a building drain to the public sewer in compliance with all applicable regulations of the Republic of Palau, and any other standard sanitation practices. {Effectiw May 26. 19%1 2401-13-38 Septic Tank Maintenance (A) Owners of septic tanks or seepage plt5 sh al I r'rnpty and clean the tank or pit when necessary, and the contents disposed of in such place and manner as sha 11 be authorized by the Chairman. (13) Septic tanks should be inspected by the ow·wr at •nte~vals of no more than ~ years to determine the rates of scum and sludge acc.Jmulation. The ,niet ~nd outlet structures and key joints should he inspected for damage after each pump-out. (() The septic tank should be cleaned whenever pither of the following conditions exists: •. 1 l The bottom of the scum layer is within 3 inche,; oi the bottom of the outlet device; or (2) The sludge level is within 8 in.' of the bottom r,1 :h,· outlet device. (UJ Septic tank sludges shall be disposed of by hduli11g to a sewage treatment facility whenever this is pos'.'ible. When no treatment facilities are 2vaitable, may be disposed by sludge spreading or spraying, in pe,mitted sites only, by licensed pumpers. Pcnnii for sludge spreading sites-shall be obtahed from f'.~ :.?PB and approved by the Chair man. 2 40 1-13-3 9 Prevention of Odor \I! non-water carriage sewage disposal pits 111duJi116 those for Type 3 toilet facilities shall be covered as often as necessary with earth or lime to c0 xclucle ilies and prevent odor. 11 l{i,.-m; r,..1,1v 2h l <JlJl'Jl 2401-13-40 Abandonment of System Each s0ptic tank, seepage pit, disposal field, ,;ub,urface absorption field, and cesspool sh al I be p1opi'tly tiiled with earth when replaced by an diJi)riived new system. Privy pits including those for fqw I totll0 t lJcilit1es shall be sealed with earth when . , ... .,,1 n1 ,ewage reaches within two (2) feet of the .c.'.ll•Llll(i ~UrfJCe. 2-101-13-41 Rep!ai r, Replacement, Removal Any toilet facility or sewage disposal system or connections from a building drain to a public sewer which fails to comply with the provisions of these regulations shall be repaired, altered, cleaned emptied or removed and replaced by the owner of the property at the O\•vner's sole cost. The Board may issue any Order deemed necessary setting forth the parameters, terms and conditions of such repair, alteration, cleaning emptying or removal and replacement. C€ffective May 26, 19961 2401-13-42 Grease Traps In order to be effective, grease traps shall be operated properly and cleaned regularly to prevent the escape of appreciable quantities of grease. Cleaning shall be done when 75% of the grease retention capar.ity h2,; been reached. o:rfecti:'L'e Ma•t: 2(, . C.'CJ&l E/\:FORCEMENT 2401-13-..U Disposal of Sewage Prohibited It shall be unlawful to dispose of treated or semi treated s~wage into any river, stream, poi:id, well, reservoir, body of fresh water, marine water or onto the ground unless prior written consent is given by the Board or its authorized representative. [Eltectiv,, t,.-\ay 26, I Y%) 2401-13-44 Stop Work Orders In the event a pr0j:,,c~ is commenced without a permit, or work perfo;med t5 not in accordance with approved plans an3 ,pecificatit,:1s or any approved c:iinges or revisiom l;·1{~· etu; L', uns;;fe construction practices are found and cor.tinued after sufficient warnings by the Chairman, a Stop Work Order shall be issued and take efiect until the conflict is resolved. ((ffectivo May 26, 1'•%1 2401-13-45 Compliance Orders (A) In addition to any other remedies provided by law, when an investigation reveals that in the course of construction, toilet facilities or sewage disposa1 systems or building drain connections to a public sewer have been constructed or altered in violation of any pro\ 1sion of the construction permit or of these regulations, the EQPB may issue an administrati\e orde· directing those persons not complying with the requirements of the permit or these regulauons to: ( 1) Comply fortnwith; or (2) In the event of a threatened violation, take appropriate remediai or preventive action. (Bl A person who is advers ely affected by such It CC E SS EASEMENT Di!IVEWAY APPENDIX A FIGURES AND DIAGRAMS FIGURE 1 S,\MPLE PLOT PLAt-· PROJECT LOCA T!ON Vicinity Map: Not To Scale BULL CAflf TRAIL SCALE: NTS TO ROUTE NO . .. . . ·. /. .· ·: : ·, > . . . .. ·~ r-lGURE 2~ LOCATION SI OPES C CROUN[) · SON VARYIN Of ,!PTIC I t..NK. . FRONTCF . • : 0 O ~ L O a . 1 • O • • O a O l ing Septic ·· In Loca ,. Minimum ',,. That a oi a Public S...:wer So E tension . . Co.is1rl er Future ;ewer \Viii Be Necess" ry f the Bur!dmg 1,,ng o 4" FIGURE J SINGLE COMPARTMENT SEPTIC TANK PLAN/DESIGN 6" mm. and no I greater than "A" r I nle Kanhole co l8"x1a inver't S . . '' ,. ,. , utlet A (Scum scorage VO 1.) t\anholc cover ' ..:::. . - 15\ of liquid depth (C) I 4 "0, OU ( l ct ( Fl\ in. ) \falls shall be 4" thtd. (min.) reinf. cone. pauretl San i cary invert 1 1 in-place or 8" CI-IB r einf. vi::h 1/2" plascer f tnish A 0 $ tee -~c... -. -4. -J ) .. m, n. Liquid depth 0 on the: inside and ail cells filled vich concrete. ~:·Liquid capacity (C) - Sanitary tee Reinf l liquid caoacity 4" {min.) re1r.f cone. SECT I On Appro:,;. tio::; of thr:. de;> th 0. s· Jepch to 6' 11\JX. depth. Create r th;rn 6 ft. should '10( be considered in -'.onk -~pac i ty Noc le:.ss than , ...... of the i iquid capacit/ L i. Septic tank si::.e, depends on number of bedrooms concempl.ated in che d-.·ellin~ served. ~efer to fable 1 for septic ,;ink si:c. ;,,. Cover 14 ac 8 .. 0 .c. £\.I, 8 \:alls l. Cone. !'IP - 2G a C 10" 2. C!-!U l. Bottom slab L i f c i ng r i ng . Asphalcic sial t~-r. c~ ve.rt b.:i C a c e,~crv ti.:v ] ayl:!rs , 'u .• :ic. lO" 0.C, E\.J. 0.( £\.: I'," 0 ( .:;;n,:i R" OUR·0•\.iAI l I I 1· ,., , Jch I I l L. l . L .. - . . - . -- .... ~~~-------· .:.t !JS::UR( JA DOUBLE COM PAR l Ml.NT SEPTIC TANK PLAN/OFSlGN I " • n r mi. Manhole ~oYe, \ -,. 1s- min. liquid level Scur.i stor age: vol. liquid tc cove ·--·•-~·-··-4 / 1 ~u ~ .... ...... .. , ... } ~ •: :: V- .:'-<•!;✓--. : · ;. .--:-.--:--~n-~-: e..:...~-~-r-;-: -~.-:J-~ .. -.- :!. !l : ; : ; ; :~~-.~-~-m~-.~--n-. ~------~-hL,J; ~ Asph-~ l tic :sc.il Lifting. Co-npa, tmen t :,,all HGURE: ;l MEASURING STICK MARK UNES HEnE AT REGULAR TIME / INTERVALS GUlDE LINE G UIOE llNf ~ 21l~ L C:::::""'=-=-~,-. x~r-a~ rn:1< SOAllO ~ EPMEASU· NG snc~ lTKIN G\J1r-E 'UHES ON a.-..r. WHEN EACH READING IS TA.KEN ~-] ,- LA YER OF ::-~?{, GRAVEL NOTE: LEAVE BATTER 80AR.0 IN PLA.CE. BE CAP.EFUL NOT TO MOVE IT OUR.ING 'rHE TEST. IMPERVIOUS STRATA PERVIOUS STRATA MEASURING SfrCK MARK UNtS KERE Ar REGULAR TIME INTERVALS / GUIDE: UNE 1/a,. TTIR ao;.w o·R ·on,,< FIXE:0 Rffffl;fUCE POW• I U==~r-r===--·7 2· U·tER Of =-·---,~/ GF\A\IH 1 \ ..........., ,';"" ----·· -·· j FIGURE 5 TYPICAL LEACHFIELOS TYPICAL BED SYSTEM Ois1rihutlon Box 2-4 Ii min L~~ W;iler Table or Cre,viced Bedrock TYPICAi TRENCH ,-:;'(STEM E,,au,e, f\.·t~P;'f1-=l I rock wale• table 01 crevice bcdron .::.:~::. --... .. ·~ "·· FIGURE h SEEPAGE PIT .:. r BC LL f,,! 0i[," S P1GO T Pl?f 1Tl!,IIT J(•,'! :s, Brick~ Ov~rl~p On Each L~vc: ·· ---- ~ ..... ,1 Sccon'.l and rem.a in ino layei:-s a~·e laid erid to end . !~. ['.(; cl: ! :i::~·' 1· ; Stc;:.oud l ")'.'.~• .. '2i....~~ Scc;,:-ir.c pits. ,ll-t •'c I~ ; ··------.. J