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HomeMy WebLinkAboutOnsite sewage treatment system S-P TESTING, INC. Steven B. Schirmers - MPCA Cert.No. 627 951 Katydid Lane NE - St. Michael, MN 55376 - (763) 497-3566 FAX (763)-497-5011 State License #394 ORONO COPY gNtt'rnr s��ttt rs rit ant 'M�IM►N�MP��tla{ileod�1or+rrR ! 1t July 22, 2008 V"2"MPW4*0"W t"IP"A •.rww MINI+�Rrw�►#1t'�I�•+�F���•Nrr�wr ries, i�11t�!► zoo[ William Robinson Sub-Division Lot 2 - Existing House 550 Willow Drive Orono, Henn. Co., MN This site has an existing on-site sewage treatment system which is classified as non- compliant due to not meeting a 3' separation from the bottom of the system & mottled soil (redox features). This on-site sewage treatment system is designed for a Type 1, four bedroom home, (area shown on the site plan is for a 5 bedroom home) in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. The soils on this site are a clay loam. The periodically saturated soils were located at 28" to 50" (redox features). Due to the seasonally saturated soils, a Pressurized Mound System will need to be installed to treat septic effluent. The bottom of the rock must be located at least 3' above the saturated soils. ORONO COPY The soils at a depth of 12" have a percolation rate of 8.6 mpi. The existing tanks are old &will need to be abandoned &filled with soil & install 3 - 1000 gallon tanks. A pumping chamber will need to be installed to lift the effluent to the treatment area. The power supply and switches must be located outside the manhole and pumping chamber in a weather proof enclosure. A warning device must be installed with a light and sound device, this is in case of a pump failure. ORONO COPY 1 �IN Nothing other than human waste, toilet tissue, laundry, showers, water softener etc. should be disposed of into the septic tanks. Recommend Iron filters be diverted out of the system. Recommend to divert the water softner also if the iron filter is diverted. Garbage disposals are not recommended, due to adding more solids &fine solids passing through to the system. Excessive amounts of soaps, antibacterial soaps, cleaning agents, shower cleaners used every shower & chlorine agents may kill the bacteria needed to treat septic effluent. Additives are not recommended. Recommend- laundering be limited to 3 to 4 loads per day. Steven B. Schirmers 3 Minnesota Pollution Compliance Inspection Form u ► Control Agency 520 Lafayette Road North Existing Subsurface Sewage Treatment Systems (SSTS ) St.Paul,MN 55155-4194 Instructions on page 7 Parcel number: For Local Tracking Purposes: System status: ❑Compliant ®Noncompliant (based on all compliance requirements) Summary Form Property Information Property owner name(s): '(Z Property address: 5so Property owner's address(if different): County: N G�.1�J'�/41�.5 Property owner phone: Permitting authority: _G��'�i 0-q� Date system constructed: i Cl Reason for nspection: $LSA System Description Brief system description: p S N Local permit number: Number o bedrooms: _ Design flow rate: Is the system: In Shoreland area? ®Yes ❑ No In Wellhead Protection Area? ❑Yes ® No An U.S. Environmental Protection System serving a Minnesota Department Agency(EPA) Class V Injection Well?❑Yes ® No of Heath(MDH)licensed facility? ❑Yes a No Compliance Status(Based on state requirements—addi ional local requirements may also apply.) Based on the information gathered and reported on attached forms,the compliance status of this system is(check one): ❑Certificate of Compliance—valid until (3 years from date f report): Notice of Noncompliance-For Noncompliant systems: The reason for noncompliance is: This noncompliant system is classified as(check one below): ❑ Imminent threat to public health&safety ®Fail!nC to protect ground water ❑ Not in compliance with operating permit Certification (Completed form must be submitted to the to I unit of government within 15 days.) I hereby certify that all the necessary information has been g 3thered to determine the compliance status of this system. No determination of future system performance has been nor ca i be made due to unknown conditions during system construction, possible abuse of the system,inadequate maintenance, or ft tune water usage. Name: S Certification number: 0 Business license name and number: rj —Q -"- r or Name of local unit of government: Signature: Date: Required Attachments Inspector Complete:This Inspection Report is pages long. Check compliance forms attached: ®Hydraulic Performance ❑Tank Integrity ®Soil Separation ❑Operating Permit Form(if applicable) IN System drawing/As-built drawing ❑An assessment of any local requirements that are different from what is required on this form IS Soil Boring Logs ❑Abandonment form(if appropriate) ❑Other information(list):"4rw Upgrade Requirements(derived from Minn.Stat.§115.55) n imminent threat to public health and safety(ITPHS)must be upgraded,replaced,or Its use discontinued within ten months of receipt of this notice or within a porter period if required by local ordinance.If the system is failing to protect ground water,the system must be upgraded,replaced,or its use discontinued wil hin the time required by local ordinance.If an existing system is not failing as defined in law,and has at least two feet of design soil separation,then the system n ed not be upgraded,repaired,replaced,or Its use discontinued,notwithstanding any local ordinance that is more strict.This provision does not apply to systen s in shoreland areas,Wellhead Protection Areas,or those used in connection with food, beverage,and lodging establishments as defined in law. wq-wwists4-31 Compliance Inspection Form for Existing SSTS 411108 Parcel number: System status: ❑Compliant ® Noncompliant (as determined by this form) Soil Separation Compliance and Other Compliance Compliance Issue #3 of 4 Date of observation: I7 -)').p!� Reason for observation: 5� - 'O►J�S�n�� This information on this form does not expire. Compliance questions/criteria: (Required) Check thea roriate box Verification Method**: (Optional) (Check the appropriate box) For systems built prior to April 1, 1996,and not located in Shoreland or Wellhead Protection Conducted soil observation(s)(attach boring logs) Area or not serving a food, beverage or ❑ Two previous verifications(attach boring logs) lodging establishment: Does the system have at least a two-foot ❑ Other: .c�,„ 5 0 L tCopa. Q�� h vertical separation distance from periodically saturated soil or be QYes ❑ 14o For non-performance systems built April 1, N 1996,or later or for non-performance systems !`} e SGS °4-li�tS located in Shoreland or Wellhead Protection Soil observation does not expire. Previous observations Areas or serving a food, beverage or lodging by two independent parties are sufficient,unless site establishment: conditions have been altered. Does the system have a three-foot vertical separation distance from periodically saturated soil or bedrock?* Yes lo For reduced separation distance systems(i.e., "performance"systems under old 7080.0179 or * May be reduced by up to 15 percent if allowed in local Type IV or V system under new 7080.2350 or ordinance. 7080.2400): **No standard protocol exists. This list is not exhaustive, Does the system meet the designed vertical in sequential order, nor does it indicate which separation distance from periodically saturated combinations are necessary to make this soil or bedrock?* ❑Yes0 No determination. Any"no"answer indicates that the system is failing to protect ground water. Certification This form is to be completed and attached to the Summary Forin of the Minnesota Pollution Control Agency's(MPCA)Compliance Inspection Form for Existing Subsurface Sewage Treatment Systems.Observations, interpretations,and conclusions must be completed by an inspector or designer.Completed form must b 9 submitted to the local unit of government within 15 days. Property owner name(s): L Property address: Gp A"je0 Property owner's address(if different): County: ' l Lip Phone: I hereby certify that I personally made the observations,.inter pr tations, and conclusions reported on this form and that they are correct. Name: s l G c Certification number: (o a r) Business license name and number: ` Name of local unit of gover ment: or Signature: - Date: 8 sts4-31 411108 1110Compliance Inspection Form for Existing SSTS 4/1/08 Parcel number: System status: ❑Compliant ®Noncompliant (as determined by this form) Hydraulic Performance and Other Compliance Compliance Issue #1 of 4 Date of observation: 9-I I -O!� Reason for obsery tion: -SOS� 41- 1�►r»S This form expires upon next inspection or in three years,which ver occurs first: Compliance questions/criteria: (Required) Check thea roriate box Verification Method'`: (Optional) (Check the appropriate box) Does the system discharge sewage to the ❑Yes ® No round surface? ❑ Searched for surface outlet Does the system discharge sewage to drain ❑Yes ❑ No ❑ Performed hydraulic test the or surface waters? Searched for seeping in yard 1.10 Does the system cause sewage backup ❑Yes No ❑ Checked for backup in home into dwellinq or establishment? Do other situations exist that have the Excessive ponding in soil system/D-boxes ❑Yes I0 No potential to immediately and adversely ❑ Homeowner testimony impact or threaten public health or safety electrical unsafe covers etc.)? ❑ Examined for surging in tank Any"yes"answer Indicates that the system is an imminent "Black soil"above soil dispersal system t4D threat to public health and safety. ❑ System requires"emergency"pumping Does the system pose a threat to ground ❑Yes09 No ❑ Performed dye test water for any conditions deemed non- ❑ Other: protective as determined by the inspector? "Yes"indicates that the system is failing to protect ground water.If"yes". describe the condition noted: "No standard protocol exists. This list is not exhaustive, in sequential order,nor does it indicate which combinations are necessary to make this determination. Certification This form is to be completed and attached to the Summary Fort i of the Minnesota Pollution Control Agency's(MPCA)Compliance Inspection Form for Existing Subsurface Sewage Treatmen t Systems.Observations,interpretations,and conclusions must be completed by an inspector.Completed form must be submitted o the local unit of government within 15 days. Property owner name(s): t 4r n Property address: p W L1..J V Property owner's address(if different): County: Phone: I hereby certify that I personally made the observations, interpn Cations, and conclusions reported on this form and that they are correct. Name: Certification number: Business license name and number: Name of local unit of government: or Signature: , Date: 7 - 8 sts4 31 411108 1110Compliance Inspection Form for Existing SSTS 4/1/08 zol 3s' 1- r^ °'�'T'�"� i3�f''YT�S• `i`i1.'L I i 1 / 944.'] � M I X \ r 4_,�-/✓�'�)►!� 950.0 �\/�� �,•� I eh15.5 ` i / xI\ s� kg43.y • ,� 94bA '�'Pe4�`GS e1.=1D4�o�n) �J W�"`� SS'�•�j I� \I t ® 30 YLO � �s�i►.,y \� a,� °�`'� \ E,c�SCi,y� I `zti ?,� 94t,1 �l f1�4�so'rl Pmaoi",on Tests Scok c 111'5 d �, � pSod Socngs i P _ ®Bend. M O(k ; W oc� ro4 Note: 7lis system is to be constructed to mert ,00.w y,. _ the NGnnesota Pontil.bn Corot A-.enq a�z• z g11•9 Chapte 7080 & Local Ordinance o r 3� / G. Check a 1 underground gtilit�es / j}� \ \— — 0 '�f D '����✓ �'�a�'Q�S%c� PRWMlY OF: W1 tsM lZ`J4�11J So1.S as S-P TESTING IM;- _ Designed 87= Y" yJILL av,/ b�1J�� po:e:a/,13122 pj-t 763-497-3566 � �� y•.1sS i3 - i2 r 70?J O� a1 SET- BACKS HOUSE System must be tonk'12from property des �C ��1�t o,.a •ci�s��w�b-� :0, frw wits :1 U frori►.bkd9s. , Treolment Oreo.= fmm bkes, streams E;p�supply Ord imlam mut be bcoted iri a Treatment area iP-•from property lines : endosvre outside pucr,ping chamber and tnanhde ion'fnxn wetis,,� "+r�f�`ms'µ' weott>er proof . - sac>cHu-�.••�•► ;from bidgs. - - L from trees y_ 9011. BORIt`'G :EI:.E�(AT10NS t t� t s �"� a '�'� 2EL 4�to $a _ grode2/oT TW?.EL Tank Tank _ 4S5 _-tklr 5 -g s•Z Droa to Tak_ �a°c�5.�1 tvoc��..� PRESSURE • MOUND SYSTEM T".4E1:�:� I Int.�" o 8� TW 5 EL-0241-0 fR.EYA'nm of PROPOSED KWPM Ma i*W4' �f�4 -�'��-1�Gs ' SND►` _ocil ( amber tvoa. ,i CHAMBER- -,CIO M 6 dia.pie �4v�rKo sS ,c,K� !y cr ; q se,o • �„o�J �`1,xF SYSTEM DESM "MOUND ��_ •� ���Q �� - �, ��,�,, T .... w BEt iOgrl rate_1Jz minXin h(design.834 t Weairrot area per got.of daffy sewoge.ttr w) — ' P u 0 ft-IL ftlovriEaoadedY Atte, �o goi./doy x.�3sglt/ sq.R of area+10%= sgf1. (»gRwtdA�=.�i.f1.lenglh of bed area aside slope can 110 t x�..het9ff= Cleat rodeheeded- 5140 .treoMted ores x=deplhOf rode= `r ,)wit:27_Z2.aty&(3/4'b 211E(bo..,%dudes 2"of rode obm pipe) 0010 setha�o o i1, ��— Cleat sptd-fit bebw rods needed e ar`yds. opproa. , sandy barn bock fi.�a y&aWat., tOMI 6r �3-4mYY��'�.n�n'��'''`Y�.9s��t..�4g4 -�o -(oesot`- �S� G►�`j��t' S Wl mb.er of tacks required .a , Ist WkA00 gd,i 2Mt mkLW--Q-gol.cnkxms fws PametN>; LN�Rm$�g- Ptrnpirtg chamber capacity-25%-af d*sewoge fkv of.&oo 9aL=J.�_09d}reserve sioroge of g,+PVebock 6&oge-- PROPERTY OF:--s V- 19 141 of• t`_.g:i.%lOO6nftof 2rda.sup*.pipe, brLfLmededjl IS . 3 gd.+mm'Vd-LigotWrvxftof3ada.pipe,rmftrteeded.2,.8 Z_got. Sug,-b�yl5ao�t �,u1S a- I -s»u total cw0cdy needed_ 5 gal.(plus area for pump) Tht r►. ZOO 0 ga L cAfl. 1�ov5� 5�0 �•�1��.�-out �_ Distribution 'pez, 'dna., _tuft, 2� 2cria P�oratans_`oport Pump ske�hp• (pumpoble capacity 16 G gaL 4cydes/day). t.Ls��o tf b ' t���o pa.��s r��li; �-� �l o aa►► �,,.n. S-PTES�M,6 INC. d - this area shoutf be shoped Note= Distonce from treotmer�t'orea to neighboring wefts--- Designed By: "" ' Nole: When oonstruct►ng be , to dnrert run-off from enter►ng' tieotment area. ' Dote= �- 612=497-3566 MOUND DESIGN WORK SHEET(For Flows up-to 1200 d) A. Average Design FLOW A-1: Estimated Sewage Flows in Gallons per Day number o Estimated to oy gpd (see figure A-1) bedrooms class I class II class III class iv or measured — x 1.5 (safety factor) = gpd 2 300 225 180 60% 3 450 300 218 of the 4 600 375 256 values B. SEPTIC TANK Capacity 5 750 450 294 in the 6 900 525 332 Class I, a"10o0 gallons (see figure C-1) 7 1050 600 370 11,or III 8 1200 1 675 1 408 1 columns. C. SOILS (refer to site evaluation) C-1: Septic Tank Capacities(in allons aci Number of Minimum liquid Uquid capacity with with disuid posal& 1. Depth to restricting layer = a.-s -to 3,i feet Bedrooms Capacity garbage disposal lift i aside 2. Depth of percolation tests = /10 feet 2orless 7s0 1125 1500 3. Texture CA.,4q \-V Ay✓1 3 or4 1000 1500 2000 Percolation rate `d.(o mpi 758 or 9 or 6 1200 3� 3000 4. Soil loading rate_ Iii t4 gpd/sgft(see figure D-33) 5. Percent land slope '� % D. ROCK LAYER DIMENSIONS 1. Multiply average design flow (A) by 0.83 to obtain required rock layer area. (000 gpd x 0.83 sqft/gpd = a2q sgft-ool)f,=Sy)" 2. Determine rock layer width = 0.83 sqft/gpd x linear Loading Rate (LLR 0.83 sqft/gpd x 12, gpd/sqft = 1c7 ft Mound LLR 3. Length of rock layer = area _width = ar y Q sgft (D1) = 10 ft (D2) = �5,5 _ft 10"(L'a' < 120 MPI <12 E. ROCK VOLUME > 120 MPI < 6 1. Multiply rock area (Dl) by rock depth of 1 ft to get cubic feet of rock S40 sqft x 1 ft = Z cuft 2. Divide cuft by 27 cuft/cuyd to get cubic yards S4') cuft -27 cuyd/cuft = a o cuyd 3. Multiply cubic yards by 1.4 to get weight of rock in tons ao cuyd x 1.4 ton/cuyd = tons D-33: Absorption Width Sizing Table Pereol°tion Rate Loading Rale F. SEWAGE ABSORPTION WIDTH in Minutes per Soil Texture Gallons Absorption Inch per day per Ratio MPI uare foot Faster than 5 Coarse Sand 1.20 1.00 Medium Sand Absorption width equals absorption ratio (See Figure D-33) Remy Sand times rock layer width (D2) ,61030 r S,ndyLosun Loam 0.60 2.in 31 to 45 Silt Loam 0.50 2.40 ll 4• x j 0_ft = �p ft 46 to 60 Sandy Clay Lo 0.45 2.67 Silty Clay Loam 61 to 120 Silty Clay 0.24 5.00 Sandy Clay Clay Slower than 120' .61 'System designed for these Boils=9 Ee other or perfomunce G., MOUND SLOPE WIDTH & LENGTH Landslope > 1% slope (landslope greater than 1%) ever 1 1. Downslope absorption width = absorption width minus rock layer width �h�✓� 6"(D2) Topsoil. ��.� +:•:+ 5 tP:ft lean Sendt 1 I .r. ... ft- 1 0 ft= 12 -ft paration - �•� Restricting Llyer Upslo Wldth(G2d) Rock idth(D2) Downs Wldth(C2q 2. Calculate mound size -h O it UPSLOPE a. Depth of clean sand fill at upslope edge of AbsorptionWidth-5-d(n rock layer = 3 ft minus the distance to restricting layer (Cl) asp 30 3ft- ft = '0 ft b. Mound height at the upslope edge of rock D-34: SLOPE MULTIPLIER TABLE layer = depth of clean sand for separation (G2a) Land UPSLOPE DOWNSLOPE Slope multiplifor various multi liers for various at upslope edge plus depth of rock layer (1 ft) in% sloers pe ratios sPope ratios plus depth of cover (1 ft) 3:1 4:1 5:1 6:1 7:1 8:1 3:1 4:1 5:1 6:1 7:1 r0 ft + ift + 1ft = .�,0 ft 0 3.0 4.0 5.0 6.0 7.0 8.0 3.0 4.0 5.0 6.0 7.0 c. Upslope berm multiplier based on land slope 1 2.91 3.85 4.76 5.66 6.54 7.41 3.09 4.17 5.26 6.38 7.53 �-1 z (see figure D-34) 2 2.83 3.70 4.54 5.36 6.14 6.90 3.19 4.35 5.56 6.82 8.14 d. Upslope width = berm multiplier (G2c) times 3 2.75 3.57 4.35 5.08 5.79 6.45 3.30 4.54 5.88 7.32 8.86 upslope mound height (G2b): 4 2.68 3.45 4.17 4.84 5.46 6.06 3.41 4.76 6.25 7.89 9.72 5 2.61 3.33 4.00 4.62 5.19 5.71 3.53 5.00 6.67 8.57 10.77 3•}Z x r��ft =�_f t 6 2,54 3.23 3.85 4.41 4.93 5.41 3.66 5.26 7.14 9.38 12.07 DOWNSLOPE 7 2.48 4;gj 3.70 4.234 70 5.13 3.80 7.69 10.34 13.73 e. Drop in elevation = rock layer width (D2) times 8 2,42 3.03 3.57 4.05 4.49W 4.88 3.95 5.88 8.33 11.54 15.91 percent landslope (C5) = 10,0 9 2.36 2.94 3.45 3.90 4.30 4.65 4.11 6.25 9.09 13.04 18.92 )0 X_0 %_ 100 = -/)_f t 10 2.31 2.86 3.33 3.75 4.12 4.44 4.29 6.67 10.00 15.00 23.33 f. Downslope mound height= depth of clean 11 2.26 2.78 3.23 3.61 3.95 4.26 4.48 7.14 11.11 17.65 30.4? sand for slope difference (G2e) at downslope 12 2.21 2.70 3.12 3.49 3.80 4.08 4.69 7.69 12.50 21.43 43.75 rock edge plus the mound height at the upslope edge of rock layer (G2b) 3,0 ft + ) ft = 3.? ft g. Downslope berm multiplier based on percent land slop (see figure D-34) 91 _ 1)3 _ h. Downslope width = downslope multiplier Upsloefwidth(G fd ) (G2g) times downslope mound height(G20401 p A•s(1.9 X 3 ft = p _ftRock Bed $ !!j!P Width(G2d) Width(D2) __LLUpsl�o�e Width(G2d)- i. Select the greater of G1 and G2h as the M Length(M) 55 downslope width: I ft Downslope Width(4321) a) ft j. Total mound width is the sum of upslope Absorption Width(F)� width (G2d) width plus rock layer width _ a}'_ (D2) plus downslope width (G2i) Total Length(G2k)2(0 it 1=7 _ft+ /0 ft+ ate_ft= �_ft k. Total mound length is the sum of upslope width (G2d) plus rock layer length (D3) plus upslope width (G2d) !-ft+ 55 ft+ ft = _2feet a } + ss - a } = 9 Final Dimensions: P+Gp r)i -(0 L"M Lf�0'� S V C-Owl :sq 5'- Ov4 o X 1B AJO I hereby certify that I havecompleted this work in accordance with applicable ordinances, rules and laws. I/�� , (signature) _(license#) date) PUMP SELECTION PROCEDURE 1. Determine pump capacity: - A. Gravity distribution 1. Minimum required discharge is 10 gpm 2. Maximum suggested discharge is 45 gpm. For other establishments at least 10%greater than the water supply rate, but no faster than the rate at which effluent will flow out of the distribution device. B. Pressure distribution See pressure distribution work sheet From A or B Selected pump capacity: y o gpm 2. Determine pump head requirements: A. Elevation difference between pump and point of discharge? soil treatment systen a,-Z feet &point of discharge day e��a. B.Special head requirement? (See Figure at right-Special Head Requirements) total pipe 9 9-2 S' feet length inlet 2A.elevation C. Calculate Friction losspipe difference z ------ 1. Select pipe diameter a in ---------------------------- 4- -4 2. Enter Figure E-9 with gpm (1A or B) and pipe diameter(Cl). Read friction loss in feet per 100 feet from Figure E-9 Special Head Requirements Friction Loss= a.'-9 ft/100ft of pipe Gravity Distribution 0ft 3. Determine total pipe length from pump discharge to soil treatment Pressure Distribution 5 ft discharge point. Estimate by adding 25 percent to pipe length for fitting loss. Total pipe length times 1.25=equivalent pipe length )`dS feet x 1.25 = _feet Friction Loss in Plastic Pipe 4. Calculate total friction loss by multiplying friction loss (C2) Per 100 feet nominal in ft/100 ft by the equivalent pipe length (C3) and divide by 100. pipe diameter ft/l00ft x as +100= ('2 _ft flow rate 1.5" 2" 3" pm D. Total head required is the sum of elevation difference (A),special 20 2.47 0.73 0.11 head requirements (B),and total friction loss (C4) 25 3.73 1.11 0.16 a`3 ft+ S ft+ -ft= 30 5.23 1.55 0.23 Total head: _ L 0 feet 35 6.96 2.06 0.30 40 8.91 2.64 0.39 3. Pump selection 45 11.07 3.28 0.48 50 13.46 3.99 0.58 A pump must be selected to deliver at least- 4 0 g 55 4.76 0.70pm 60 5.60 0.82 (lA or B)with at least '- O _feet of total head (2D) 65 6.48 0.95 70 1 7.44 1.09 I hereby certify that I have completed this work in accordance with applicable ordinances, rules and laws. (signature) (license#) _t! ar:0 " (date) PRESSURE DISTRIBUTION SYSTEM Geotextile fabric 1. Select number of perforated laterals 3r �F.,��[;..inch in r Quarte ---- - '-cu Rarj' 2. Select perforation spacing= 3.0ft s'.of rock 3. Since perforations should not be placed closer than 1 foot to Perf Sizing Perf Spacing s8 i.s, s' /4" the edge of the rock layer (see diagram),subtract 2 feet from the rock layer length. E-4: Maximum allowable number of 1/4-inch perforations SS ft per lateral to guarantee<10%discharge variation oc ayer ng -2 ft = 3 Perforation 4. Determine the number of spaces between perforations. spacing Divide the length(3)by perforation spacing(2) and round feel 1 inch 1.25 inch :1.5nch 2.0 inchd wn to nearest whole number. 2.5 8 14 28 Perforation spacing=_ S 3 ft-i- 3 ft=-L2-spaces 3.0 8 13 5. Number of perforations is equal to one plus the number of 3.3 7 12� 16 25 perforation spaces(4). Check figure E-4 to assure the number of 4.0 7 11 15 23 perforations per lateral guarantees <10%discharge variation. 5.0 6 10 14 22 spaces + 1 = l i perforations/lateral ra 6: Perforation Discharge in g gpm 6. A. Total number of perforations = perforations per lateral (5) head times number of laterals (1) perforation diameter inches .J� "'-perfs/lat x lat=�-perforations eet) 3/16 7/32 __114 B. Calculate the square footage per perforation. 1.0o 0.42 0.560.74 Should be 6-10 sqft/perf. Does not apply to at-grades. 2.0b 0.59 0.80 1.04 Rock bed area = rock width (ft) x rock length(ft) 5.0 1 0.941 1.26 1.65 _Lo ft x­S _ft= SUi sgft Square foot per perforation = Rock bed area +number of perfs (6) b use 2.0 feet for anything e,enomes. 660 sgft= 5� _perfs = �,.�sgft/perf MANIFOLD LOCATED AT END OF PRESSURE DISTRIBUTION SYSTEM 7. Determine required flow rate by multiplying the total number of perforations (6A) by flow per perforation(see figure E-6) ^K - .59 perfs x [� gpm/perfs =__4_Q_gpm i 8. If laterals are connected to header pipe as shown on upper example, to select minimum required lateral diameter;enter figure E-4 with perforation spacing (2)and number of perforationsOF per lateral (5) Select minimum diameter for / Perforated lateral= /� LAYOUT Oi PERrORATEO PIPE LATERALS FOR AA les. PRESSURE OISTRISUTION W MOUND 9. KINDIMT[0 RAbTIt iP[ If perforated lateral system is attached to manifold pipe near [ oRoloN[wTRo H• y,cW[ the center,lower diagram,perforated lateral length (3) and `"° tOA"ti`t~` =` ''°" V w number of perforations per lateral (5)will be approximately oneKAi AT. .,, r"°�° half of that in step 8. Using these values,select minimum b '"` d diameter for perforated lateral = inches. [ b, ![ ATE°L'KR,L f "' ^"^ �LLRSTP R I hereby certify that I ha a completed this work in accordance with applicable ordinances, rules and laws. (signature) `I (license 0 (date) S-P TESTING, INC. Steven B. Schirmers - MPCA Cert.No. 627 951 Katydid Lane NE - St. Michael, MN 55376 - (763) 497-3566 FAX - (763) 497-5011 State License #394 LOGS OF SOIL BORINGS William Robinson Sub-Division, Lot 2 - Existing House 550 Willow Dr. Orono, Henn. Co., MN Borings completed on 7-16-08, with a hand bucket auger. BORING NUMBER 1A- Elev.953.5. - MOTTLED SOIL AT 46" - no standing water present in boring. 0 - 22" Topsoil dark brown loam 2.5Y 3/2 22" - 32" Dark gray brown loam 2.5Y 4/2 32" - 46" Gray brown loam 2.5Y 5/2 46" - 54" Gray brown loam 2.5Y 6/2 - distinct mottles 10YR 6/8 BORING NUMBER 2A- Elev.954.7 - MOTTLED SOIL AT 34" - no standing water present in the boring. 0 - 18" Topsoil dark brown loam 2.5Y 3/2 18" - 30" Dark gray brown loam 2.5Y 4/2 30" - 34" Gray brown clay loam 2.5Y 5/2 34" - 38" Gray brown clay loam 2.5Y 5/2 - distinct mottles 10YR 7/1, 10YR 6/8 BORING NUMBER 3A- Elev.974.3 - MOTTLED SOIL AT 28" - no standing water present in the boring. 0 - 8" Topsoil dark brown loam 10YR 3/3 8" - 18" Gray brown loam 10YR 5/2 18" - 22" Brown loam 10YR 4/3 22" - 28" Brown clay loam 10YR 5/3 28" - 42" Brown clay loam 10YR 5/3 - distinct mottles 10YR 7/1, 10YR 6/8 42" - 48" Pale brown loam 10YR 6/34 - distinct mottles 10YR 7/1, 10YR 6/8 Soil borings cont'd. BORING NUMBER 4A- Elev.973.8 - MOTTLED SOIL AT 32" - no standing water present in the boring. 0 - 8" Topsoil dark brown loam 10YR 3/3 8" - 18" Gray brown loam 10YR 5/2 18" - 30" Brown loam 10YR 4/3 30" - 32" Brown sandy loam 10YR 5/3 32" - 36" Brown sandy loam 10YR 5/3 - distinct mottles 10YR 7/1, 10YR 6/8 36" - 42" Pale brown clay loam 10YR 6/3 - distinct mottles 10YR 7/1, 10YR 6/8 42" - 48" Pale brown loam 10YR 6/3 - distinct mottles 10YR 7/1, 10YR 6/8 BORING NUMBER 5A- Elev.955.2 - MOTTLED SOIL AT 46" - no standing water present in the boring. 0 - 12" Topsoil dark brown loam 10YR 3/3 12" - 20" Brown loam 10YR 4/3 20" - 46" Yellowish brown clay loam 10YR 5/4 46" - 52" Yellowish brown clay loam 10YR 5/6 - distinct mottles 10YR 6/8 52" - 60" Yellowish brown clay loam 10YR 5/6 - distinct mottles 10YR 7/1, 10YR 6/8 BORING NUMBER 6A- Elev.974.9 - MOTTLED SOIL AT 28" - no standing water present in the boring. 0 - 8" Topsoil dark brown loam 10YR 3/3 8" - 12" Brown clay loam 10YR 4/3 12" - 28" Yellowish brown clay loam 10YR 5/4 28" - 38" Yellowish brown loam 10YR 5/6- distinct mottles 10YR 7/1, 10YR 6/8 38" - 42" Yellowish brown loam 10YR 6/3 - distinct mottles 10YR 7/1, 10YR 6/8 42" - 44" Pale brown silty loam 10YR 6/3 - distinct mottles 10YR 7/1, 10YR 6/8 44" - 48" Pale brown loam 10YR 6/3 - distinct mottles 10YR 7/1, 10YR 6/8 BORING NUMBER 7A- Elev.960.2 - MOTTLED SOIL AT 50" - no standing water present in boring. 0 - 8" Topsoil dark brown loam 10YR 3/3 8" - 24" Brown clay loam 10YR 4/3 24" - 50" Yellowish brown loam 10YR 5/6 50" - 72" Yellowish brown loam 10YR 5/6 - distinct mottles 10YR 7/1, 10YR 6/8 2 CERTIFICATION NO.627 STATE LICENSE NO.394 PERCOLATION TEST DATA SHEET Percolation test readings made by S-P Testing. Inc. on 7-17"08 starting at 10:45am. Test hole location 550 Willow Drive, Lot 2, Orono. Test hole number. Date test hole was prepared-7--16--Q& Depth of hole bottom 11 inches. Diameter of hole iz inches. SOIL DATA FROM TEST HOLE DEPTH,INCHES SOIL TEXTURE 0 - 12" Topsoil dark brown loam Method of scratching sidewall is knife. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial water filling 7-16-08, 12:30,pm Depth of initial water filling is 12 inches above the hole bottom. Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon. Maximum water depth above hole bottom during test is(inches. Measurement, Drop in water level, Percolation rate, Time Time interval,min inches inches minutes r inch Remarks 10:30 prefill 6 10:45 11:15 6 4 7.5 30 min 11:22 11:52 6 4 7.5 30 min 11:53 12:23 6 4 7.5 30 min Percolation rate=Zuninutes per inch. CERTIFICATION NO.627 STATE LICENSE NO.394 PERCOLATION TEST DATA SHEET Percolation test readings made by S-P Testing, Inc. on 7-17-08 starting at 10:46am. Test hole location 550 W'll_ow Drive, lot 2. Orono• Test hole number. Date test hole was prepared 77-16-08-08. Depth of hole bottom 12 inches. Diameter of hole fi inches. SOIL DATA FROM TEST HOLE DEPTH,INCHES SOIL TEXTURE 0 - 12" Topsoil dark brown loam Method of scratching sidewall is knife. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial water filling 7-16-08, 12.30pm Depth of initial water filling is 12 inches above the hole bottom. Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon. Maximum water depth above hole bottom during test is 6 inches. Measurement, Drop in water level, Percolation rate, Time Time interval,min inches inches minutes per inch Remarks 10:30 refill 6 10:46 11:16 6 3-1/2 8.6 30 min 11:21 11:51 6 3-1/2 8.6 30 min 11:54 12:24 6 3-1/2 8.6 30 min Percolation rate=&6-minutes per inch. CERTIFICATION NO.627 STATE LICENSE NO.394 PERCOLATION TEST DATA SHEET Percolation test readings made by S-P Testing, Inc. on 7-17-08 starting at 10:47am. Test hole location 550 WiHow Drive,Lot 2, Orono Test hole number. Date test hole was Prepared-7-16-08, Depth of hole bottom 12.inches. Diameter of hole fi inches. SOIL DATA FROM TEST HO . DEPTH,INCHES SOIL TEXTURE 0 - 811 Topsoil dark brown loam 8'1 - 12" Gray brown loam Method of scratching sidewall is knife. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial water filling 7-16-08, 12:30pm. Depth of initial water filling is 12 inches above the hole bottom. Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon. Maximum water depth above hole bottom during test is 6 inches. Measurement, Drop in water level, Percolation rate, Time Time interval,min inches inches minutes per inch Remarks 10:30 prefill 6 10:47 11:17 6 5 6 30 min 11:20 11:50 6 5 6 30 min 11:55 12:25 6 5 6 30 min Percolation rate=fiAminutes per inch. CERTIFICATION NO.627 STATE LICENSE NO.394 PERCOLATION TEST DATA SHEET Percolation test readings made by S-P Testing, Inc on 7-17-08 starting at 10:48am. Test hole location 550 Wi low T)rive, Lot 2. Orono, Test hole numberAA. Date test hole was prepared-7--11-0& Depth of hole bottom 12 inches. Diameter of hole fi inches. SOIL DATA FROM TEST HOLE DEPTH,INCHES SOIL TEXTURE 0 - 81' Topsoil dark brown loam 811 - 1211 Gray brown loam Method of scratching sidewall is kn . Depth of gravel in bottom of hole is 2-inch-u. Date and hour of initial water filling 7-16-08, 12.30um Depth of initial water filling is 1212 inches above the hole bottom. Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon. Maximum water depth above hole bottom during test is 6-inches. Measurement, Drop in water level, Percolation rate, Time Time interval,min inches inches minutes per inch Remarks 10:30 prefill 6 10:48 11:18 6 4-1/2 6.7 30 min 11:19 11:49 6 4-1/2 6.7 30 min 11:56 12:26 6 4-1/2 6.7 30 min Percolation rate=6.7-minutes per inch. S-P TESTING, INC. Steven B. Schirmers - MPCA Cert.No. 627 951 Katydid Lane NE - St. Michael, MN 55376 - (763) 497-3566 FAX - (763) 497-5011 State License #394 LOGS OF SOIL BORINGS William Robinson 550 Willow Drive, Lot 2 Orono, Henn. Co., MN Borings completed on 7-16-08, with a hand bucket auger. BORING NUMBER 1- Elev946.0. - MOTTLED SOIL AT 34" - no standing water present in boring. 0 - 8" Topsoil dark brown loam 10YR 3/3 8" - 14" Brown clay loam to loam 10YR 4/3 14" - 34" Yellowish brown sandy loam 10YR 5/6 34" - 48" Yellowish brown fine sandy loam 10YR 5/6 - distinct mottles 10YR 7/1, 10YR 6/8 BORING NUMBER 2- Elev.946.8 - MOTTLED SOIL AT 28" - no standing water present in the boring. 0 - 10" Topsoil dark brown loam 10YR 3/3 10" - 14" Brown loam 10YR 4/3 14" - 28" Yellowish brown clay loam 10YR 514 28" - 34" Yellowish brown clay loam 10YR 5/6 - distinct mottles 10YR 7/1, 10YR 6/8 34" - 48" Pale brown clay loam 10YR 6/3 - distinct mottles 10YR 7/1, 10YR 6/8 BORING NUMBER 3- Elev.943.6 - MOTTLED SOIL AT 14" - no standing water present in the boring. 0 - 8" Topsoil dark brown loam 10YR 3/3 8" - 14" Brown clay loam 10YR 4/3 14" - 22" Brown clay loam 10YR 5/3 - distinct mottles 10YR 7/1, 10YR 6/8 22" - 42" Pale brown loam 10YR 6/3 - distinct mottles 10YR 7/1, 10YR 6/8 Soil borings cont'd. BORING NUMBER - Elev.943.6 - MOTTLED SOIL AT 24" - no standing water present in the boring. 0 - 10" Topsoil dark brown loam 10YR 3/3 10" - 14" Gray brown loam 10YR 5/2 14" - 18" Brown clay loam 10YR 4/3 18" - 24" Brown clay loam 10TYR 5/3 - faint mottles 10YR 6/8 24" - 32" Brown clay loam 10YR 5/3 - distinct mottles 10YR 7/1, 10YR 6/8 32" - 44" Gray brown clay loam 10YR 6/2 - distinct mottles 10YR 7/1, 10YR 6/8 44" - 48" Gray brown loam 10YR 6/2 - distinct mottles 10YR 7/1, 10YR 6/8 BORING NUMBER 5- Elev.948.0 - MOTTLED SOIL AT 24" - no standing water present in the boring. 0 - 6" Topsoil dark brown loam 1 UYR 3/3 6" - 12" Brown clay loam 10YR 4/3 12" - 24" Yellowish brown clay loam 10YR 5/4 24" - 36" Yellowish brown clay loam 10YR 5/6 - distinct mottles 10YR 7/1, 10YR 6/8 BORING NUMBER 6- Elev.945.1 - MOTTLED SOIL AT 18" - no standing water present in the boring. 0 - 6" Topsoil dark brown loam 10YR 3/3 6" - 18" Brown clay loam 10YR 4/3 18" - 26" Brown clay loam 10YR 5/3 - distinct mottles 10YR 7/1, 10YR 6/8 26" - 36" Pale brown clay loam 10YR 6/3 - distinct mottles 10YR 7/1, 10YR 6/8 2 C$RTIFICATION NO.627 STATE LICENSE NO.394 PERCOLATION TEST DATA SHEET Percolation test readings made by S-P Testing,Inc. on 7-17-08 starting at 8:SOam• Test hole location 550 Willow Drive,Lot 2, Orono. Test hole number-1. Date test hole was prepared 7-16_08. Depth of hole bottom 12 inches. Diameter of hole 6 inches. SOIL DATA FROM TEST HOLE DEPTH,INCHES SOIL TEXTURE 0 - 811 Topsoil dark brown loam 81' - 12" Brown clay loam Method of scratching sidewall is knife. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial water filling 7-16-08, 10:00am. Depth of initial water filling is 12 inches above the hole bottom. Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon. Maximum water depth above hole bottom during test is fi inches. Measurement, Drop in water level, Percolation rate, Time Time interval,min inches inches minutes per inch Remarks 8:40 prefill 6 8:50 9:20 6 4 7.5 30 min 9:27 9:57 6 4 7.5 30 min 9:58 10:28 6 4 7.5 30 min Percolation rate= 7.5 minutes per inch. CERTIFICATION NO.627 STATE LICENSE NO.394 PERCOLATION TEST DATA SHEET Percolation test readings made by S-P Testing,Inc. on 7-17-08 starting at 8 51am. Test hole location 550 Willow Drive, Lot 2, Orono. Test hole number-2.. Date test hole was prepared 7-16-08. Depth of hole bottom 12 inches. Diameter of hole C inches. SOL DATA FROM TEST HO DEPTH,INCHES SOIL TEXTURE 0 - 101, Topsoil dark brown loam 1011 - 1211 Brown loam Method of scratching sidewall is knife. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial water filling 7-16-08, 10:00am. Depth of initial water filling is 12 inches above the hole bottom. Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon. Maximum water depth above hole bottom during test is ii inches. Measurement, Drop in water level, Percolation rate, Time Time interval,min inches inches minutes per inch Remarks 8:40 prefill 6 8:51 9:21 6 4 7.5 30 min 9:26 9:56 6 4 7.5 30 min 9:59 10:29 6 4 7.5 30 min Percolation rate =7.5-aminutes per inch. ; CERTIFICATION NO.627 STATE LICENSE NO.394 PERCOLATION TEST DATA SHEET Percolation test readings made by. -P Testing, Inc. on 7-17-08 starting at&Mam• Test hole location 550 Willow Drive,Lot 2, Orono, Test hole number-J. Date test hole was prepared-7--M-0& Depth of hole bottom 1.inches. Diameter of hole 6 inches. SOIL DATA FROM TEST HOLE DEPTH,INCHES SOIL TEXTURE 0 - 811 Topsoil dark brown loam 811 - 1211 Brown clay loam Method of scratching sidewall is kWk. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial water filling 7-16-08, 10:00am. Depth of initial water filling is 12 inches above the hole bottom. Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon. Maximum water depth above hole bottom during test is 6 inches. Measurement, Drop in water level, Percolation rate, Time Time interval,min inches inches minutes per inch Remarks 8:40 prefill 6 8:52 9:22 6 4-1/2 6.7 30 min 9:25 9:55 6 4-1/2 6.7 30 min 10:00 10:30 6 4-1/2 6.7 30 min Percolation rate= minutes per inch. CERTIFICATION NO.627 STATE LICENSE NO.394 PERCOLATION TEST DATA SHEET Percolation test readings made by S-P Testing, Inc. on 7-17-08 starting at g:53am. Test hole location 550 Willow Drive, Lot 2, Orono. Test hole number 4. Date test hole was prepared-1-16-O& Depth of hole bottom 12 inches. Diameter of hole fi inches. SOIL DATA FROM TEST HOLE DEPTH,INCHES SOIL TEXTURE 0 - 101, Topsoil dark brown loam 1011 - 1211 Gray brown loam Method of scratching sidewall is knife Depth of gravel in bottom of hole is 2 inches. Date and hour of initial water filling 7-16-08, 10:00am. Depth of initial water filling is 12 inches above the hole bottom. Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon. Maximum water depth above hole bottom during test is fi inches. Measurement, Drop in water level, Percolation rate, Time Time interval,min inches inches minutes per inch Remarks 8:40 prefill 6 8:53 9:23 6 4-3/4 6.3 30 min 9:24 9:54 6 4-3/4 6.3 30 min 10:01 10:31 6 4-3/4 6.3 30 min Percolation rate=63ininutes per inch.