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C-2 Stormwater Grading Plan SUBSURFACE INVESTIGATION: (03-09-05 by JME) TEST PIT #1 0 - 65" GRANULAR FILL W/ BLACK TOP, STUMPS, ORIGINAL GRADE ® 69" 65- 89" FINE GREY SAND 89" BOTTOM OF HOLE \ �� 2:/ / - - CEO BOULDERS OR ., h �h WATER AT 89 GABION COURSE NO MOTTLING NOTED T 26 c TO ACT AS PEDESTRIAN BARRIER / /325-3 ( \ / h h TEST PIT #2 / 'IV, v v v 0 - 54" LIGHT BROWN FINE SAND Y _ o GABION WALL STRUCTURE BUILT h 54- 114 FINE GREY SAND / v v TO MANUFACTURERS SPECIFICATIONS , h 114" BOTTOM OF HOLE AND APPROVED BY DESIGN ENGINEER / / - _ -CfOR OE-GABION 325.0 - 323.67) 32 _ \ \\ WATER AT 84" _ 323 5 X3r1)4.3 J ( // 'i �\ \ 22 12'x8' FOREBAY h h NO MOTTLING NOTED D1 INVERT 318.0 TEST PIT 3 L s # / BROAD CRESTED WEIR 0 - 48 REDDISH BROWN SAND FILL 32s \�\'� \ INVERT 322.5 ® 48- 102" F 0 \ I ? 32 5.6 -\ �� h FINE GREY SAND \ ,p � 325.5 � \' // \ 102 BOTTOM OF HOLE / RIP RAP OUTFALL - LIGHT TO WATER " LIGHT RIP RAP. 12'WIDTH x 15' LENGTH x 15" DEPTH \ \ NO MOTTLING NOTED r \© 25.5 324.5 \ � // \ 325 � (bP.T. #2 \ �24.8 19 \ TEST PIT #4 STO WATER D RSION 21 T.P�1 324.0' SEDIMENT CONTROL BARRIER C1 \ 0 - 24" DARK BROWN TOPSOIL & FILL 24- 108" FINE GREY SAND SWALE� \4.5 D1 '� � -- 1 \ 322.0 24.8 STORMWATER POND �' � „ 324.2 � .� 108 BOTTOM OF HOLE z P.T. 4.5 \ MOTTLING NOTED AT 25" WATER AT 72" � I a- \ l 322 \ '\324 .; TEST PIT #5 F 0 - 24" DARK FINE SANDY TOPSOIL \ \\ 1 3.6 4.5 24- 72" FINE GREY SAND �' PIPE INV. 0 322.3 325 324.8 - - - 72" BOTTOM OF HOLE Y ST.P. #2 j 4.8 MOTTLING NOTED AT 30" WATER AT 60" \ 3 325. 7 \ 4.35 _ I TEST PIT #6 In / i \ - o I / oT \ / \ �' T.P. 0 - 24" REDDISH BROWN FINE SAND L� o I l �o ` _ 3 .90 \ \ \ r� / 324.8 24- 84;; FINE GREY SAND \\ �� 1 84 BOTTOM OF HOLE IN, \ 5.93 MOTTLING NOTED AT 12" WATER AT 60" o \ I I \ 325. 0 P I316.0 TEST P +325. LA �o \ / \ 325.93 T.P. #3 I P #8 / �� / 0 - 12" REDDISH BROWN FINE SAND \\ / 12- 48" BURIED WIRE, HARDWARE "DISPLAY", BRUSH (VOIDS) i 48" BOTTOM OF HOLE N1') WATER AT 42" 324.7 j 5j/ j/ / j NO MOTTLING NOTED I cs / -J j/ TEST PIT #8 325.68 \ \ �� T. / / / /f / 0 - 3" DARK BROWN TOPSOIL / 3 - 60 REDDISH BROWN FINE SAND 1 1400 � ,58 - 325. \ \ �\ // / // / 60- 72" FINE GREY SAND `j' \ 1 ST. 4 � / \`r'S .� // / // / 72" BOTTOM OF HOLE o ` 1325.41 325.48 � CB #3 � \ / [,� �� // / // / ., \ \ \ // i // MOTTLING NOTED AT 12 WATER AT 54 v\ 325. INV. G -325.2 I 4 41 32\ \ \ ���L INV.IN=322.83 TEST PIT 9 w �\ ' 325.33 \ ,�. INV. OUT-3 .80 �\ � / � . . � # \ /�/� / 0 - 15" DARK BROWN TOPSOIL 15- 96" FINE GREY SAND \ `^9 C #2 s \ / / 96" BOTTOM OF HOLE .� 3 INV. -32 / \ / / / /o / °- � \ \ � J \ INV. UT-3 5C t F.F. 325.80 / / MOTTLING NOTED AT 16" \ O J J NO WATER NOTED Q, _ - - _ \ >e 6IT.P. \ / / / / TEST PIT #10 (07-07-05 by JME) ry 1� X324.2 / / 0 - 3" DARK BROWN TOPSOIL \ 325.44\ / \ / / �S 3 - 60" REDDISH BROWN FINE SAND 325 \ , / / O / / / / 60- 72;; FINE GREY SAND �, 9 ..� , \ , / 72 BOTTOM OF HOLE F.F. 325�0 7 / E \ -_ 8 3 / / \� -0 CB 5 / MOTTLING NOTED AT 12" WATER AT 41 " _ \ G -325.20 .IN-323.02 z- / / / / PERCOLATION TEST #1 . v OUT 23.00 F.F. 325�FI0 / SOIL: BROW „ ° 1 / TEST DEPTH: 18 Q C \ 56 / N COARSE SAND \ / / STABILIZED PERCOLATION RATE OF 4 MINUTES 52 SECONDS. on ROOF DRAIN _ \ � N / / PERCOLATION TEST #2 Roo ` RAIN / / / TEST DEPTH: 20" \ 325. / \ / / SOIL: BROWN FINE SAND STABILIZED PERCOLATION RATE OF 5 MINUTES 55 SECONDS. GRADING PLAN FLOW DIRECTION:m► \ \ / / / / 4-1 PERCOLATION TEST #3 U c ti 24.75 / / / 1/ / TEST DEPTH: 17" o \ / �`L / SOIL: BROWN FINE SAND STABILIZED PERCOLATION RATE OF 0 MINUTES 41 SECONDS. CAT BASI , 324.4 r I / / PROITEC 1ON 81iiiRIER D1 10/21/05 © REVISED PER TOWN COMMENT/CTM SIGN OFF HTJ 07/15/05 ® REVISED PER TOWN COMMENT CB #4 TS M TE=324.70 / 04/15/05 QA SUBMITTED FOR SITE PLAN REVIEW TSM n I \ \ \ j \ / I OUT423.20 / DATE REV # ISSUED / REVISIONS BY L \ \ STORMWATER DESIGN STANDARDS: \ WATT SERVI 13 32 3 ( / DRAWIN E ° CO NECTION\ 2 324 4 \ \ , �P�OF ke STORMWATER R M WATE R / GRADING P LAN 0 DEFINED DISTURBANCE LIMITS = 68 900f SF SF \\ I * OS� �9 �� ' \ WATER SERMMC 5 O , I I �� 9� AUTO/BOAT SALES FACILITY 0o QUEENSBURY STORMWATER CLASSIFICATION = "COMMERCIAL" FORCE MAIN 1�ROSSING t , ` I S4 y "DIAMOND AUTOS" 04 50 YR RETURN INTERVAL EAST QUAKER SERVICE ROAD QUEENSBURY, NEW YORK i� GREATER THAN 1 ACRE OF DISTURBANCE IONP� NYSDEC PHASE II STORMWATER REQUIREMENTS n STORMWATER PLAN GRAPHIC SCALE uu SCALE: SEE GRAPHIC SCALE 20 0 10 20 40 80 JARRETT - MARTIN ENGINEERS, PLLC It H JARRETT H. THDM PROFESSIONAL ENGINEERING S 0 P.E. #57509 12 EAST WASHINGTON STREET PHONE: (518) 792-2907 N ( IN FEET ) CO IGHT 0 2005 GLENS FALLS, N.Y. FAX: (518) 798-1864 a� L� ONLY COPES OF THIS DRAWING WITH A cl BLUE SEAL SHALL BE CONSIDERED TRUE MARCH 2O05 PRO#04-134 SHEET: 2 OF 8 O AND VALID ALTERATIONOFTHIS DOCUMENT EXCEPT BASESHEET SIZE: 24x36 PLOTTED/REVISED:10/21/05 9:00 AM RYA LICENSEDCENS®BVG11�R IS UNLAWFUL ' i i