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0 <br />m <br />0 <br />D <br />3 <br />0 <br />S <br />a <br />N <br />0 <br />n <br />U <br />O <br />L <br />O <br />d <br />L <br />i <br />I <br />POND No. RP -2 -3 <br />SEDIMENTATION POND CALCULATIONS <br />REQUIRED POND CAPACITY <br />WATERSHED AREA <br />DISTURBED AREA WITHIN WATERSHED <br />UNIVERSAL SOIL LOSS EQUATION - 3 YR SEDIMENT VOLUME <br />SCS RUNOFF FOR 10 YR - 24 HR STORM <br />TOTAL REQUIRED VOLUME <br />POND VOLUME <br />39.17 ACRES <br />30.44 ACRES <br />3.97 A.F. <br />2.64 A.F. <br />6.61 A.F. <br />CONTOUR <br />AREA <br />(ACRES) <br />AVG. AREA <br />(ACRES) <br />INTERVAL <br />(FT.) <br />ACCUM. CAPACITY <br />(AF) <br />5486 <br />0.57 <br />0.00 <br />0.67 <br />1.0 <br />5487 <br />0.77 <br />0.67 <br />1.00 <br />1.0 <br />5488 <br />1.22 <br />1.67 <br />1.32 <br />2.0 <br />5490 <br />1.42 <br />4.31 <br />1.53 <br />T] <br />5492 <br />1.63 <br />7.37 <br />1.70 <br />1.0 <br />5493 <br />1.77 <br />9.07 <br />m <br />SURFACE AREA <br />AREA @ TOP OF PRINCIPAL SPILLWAY 1.77 ACRES <br />SPILLWAY DISCHARGE DESIGN <br />SCS DISCHARGE FOR 25 YR - 24 HR STORM 17.12 CFS <br />SCS DISCHARGE FOR 10 YR - 24 HR STORM 11.18 CFS <br />THEORETICAL DETENTION TIME 10 YR - 24 HR STORM 0.75 HRS <br />NOTE: DISCHARGES SHOWN ABOVE ASSUME POND FULL CONDITION <br />AT BEGINNING OF STORM. <br />ii <br />w O <br />Q 0 <br />Um <br />O0 <br />0 <br />Q 4 <br />W � L <br />--J w <br />ww <br />10 yr. - 24 hr. Runoff <br />Storage (Note: 2.64 AF <br />from top of principal spillway.) <br />00 1 2 3 4 5 6 7 8 9 10 <br />VOLUME <br />(ACRE FEET) <br />POND STAGE VOLUME CURVE <br />550 <br />550 <br />549 <br />549 <br />548 <br />5500 <br />5490 <br />5480 <br />NOTE <br />Existing <br />Grade <br />G <br />Slope <br />Design Crode <br />Z <br />o <br />Slope <br />w <br />+5.00% <br />+0.00% <br />� <br />� <br />o <br />cF.. <br />T] <br />m <br />w <br />+1 <br />O <br />m <br />0 <br />Ln <br />a_ <br />0 <br />CD <br />;0 <br />I <br />0 <br />0 <br />N <br />�0 <br />CIO00 <br />a <br />Q0 <br />� <br />-, <br />� <br />0 <br />s <br />0� <br />o�� <br />+ <br />C) <br />-t <br />N-t <br />U -) <br />'t <br />+Ln <br />+Ln <br />+Lo <br />it <br />0 <br />0 <br />u <br />0 <br />n <br />Q <br />< <br />n <br />w <br />n <br />w <br />Jn <br />w <br />cn <br />w <br />NOTE <br />O � °o <br />+ + + -+ + + <br />O O C; n c� <br />PROFILE EMERGENCY SPILLWAY <br />I" = 20' V <br />I" = 40' H <br />551` <br />551 <br />550 <br />550 <br />549 <br />549 <br />545 <br />548 <br />0 <br />J <br />J <br />J <br />Q- <br />J <br />J <br />CC <br />SECTION A <br />7 " = 10' V <br />FOR NOTES SEE PERMIT MAP 78. <br />CAPACITY = 7699.32 CU. YD. <br />i <br />ZZ <br />-APACITY 2979.34 CU. YD. <br />PONCE EL. = 5457' <br />�o <br />00 <br />U� <br />Q_ <br />Cl- Z� <br />Q <br />2w <br />Ll I <br />48" CMP <br />TOP EL. = 5492.99' <br />BOTTOM EL. = 5484.99 <br />V <br />CAPACITY = 369.08 CU. YD. <br />PLAN - SEDIMENT POND RP -2 -3 <br />71, = 50' <br />EMERGENCY SPILLWAY <br />AT BERM <br />5505 <br />5500 MIN. <br />N 5495 12" THICK RIPRAP <br />5490 r. <br />RFRM F/ = 4 7 <br />O O O O <br />o O O o <br />O N <br />SECTION B <br />7 " = 10' V <br />1 "- 50'H <br />O <br />Existing <br />Grade <br />G <br />Slope <br />Design Crode <br />Z <br />o <br />Slope <br />+5.00% <br />+0.00% <br />O � °o <br />+ + + -+ + + <br />O O C; n c� <br />PROFILE EMERGENCY SPILLWAY <br />I" = 20' V <br />I" = 40' H <br />551` <br />551 <br />550 <br />550 <br />549 <br />549 <br />545 <br />548 <br />0 <br />J <br />J <br />J <br />Q- <br />J <br />J <br />CC <br />SECTION A <br />7 " = 10' V <br />FOR NOTES SEE PERMIT MAP 78. <br />CAPACITY = 7699.32 CU. YD. <br />i <br />ZZ <br />-APACITY 2979.34 CU. YD. <br />PONCE EL. = 5457' <br />�o <br />00 <br />U� <br />Q_ <br />Cl- Z� <br />Q <br />2w <br />Ll I <br />48" CMP <br />TOP EL. = 5492.99' <br />BOTTOM EL. = 5484.99 <br />V <br />CAPACITY = 369.08 CU. YD. <br />PLAN - SEDIMENT POND RP -2 -3 <br />71, = 50' <br />EMERGENCY SPILLWAY <br />AT BERM <br />5505 <br />5500 MIN. <br />N 5495 12" THICK RIPRAP <br />5490 r. <br />RFRM F/ = 4 7 <br />O O O O <br />o O O o <br />O N <br />SECTION B <br />7 " = 10' V <br />1 "- 50'H <br />O <br />Q <br />G <br />Z <br />o <br />,)ECTION C <br />1 " = 10' V <br />1 "= 50'H <br />EMERGENCY SPILLWAY <br />5505 <br />5500 <br />5495 <br />5490 0 <br />O O <br />SECTION D <br />I " = 10' V <br />I" =50'H <br />12" THICK RIPRAP <br />A <br />REVISIONS <br />, <br />Z <br />o <br />� <br />cF.. <br />I <br />r <br />5 <br />a <br />, <br />• V'V <br />to'b& v�� <br />Technical <br />Services <br />3266 South 125 West <br />Price, Utah 84 '501 <br />(801) 637 =9300 <br />FAX (801) 637 -2833 <br />`J <br />cat <br />W I <br />O <br />� W � <br />Qi <br />O. ROBERTSON <br />CHECKED BY: <br />L.W.J. <br />10%ATE: <br />2/98 <br />SCALE: <br />AS SHOWN <br />JOB NO. <br />103 <br />DRAWING NO. <br />-NI A P '01) 9 <br />RECEIV L) -SHEET j OF 1 <br />n nI 7 5 1499 1 <br />1 <br />DIV. OF A11NERA, + A, GEOLOGY ! lip Y' r <br />GR. .D , ;:CTIG bJ <br />