rock koshkonong lake district lake dredging project
DESCRIPTION
ROCK KOSHKONONG LAKE DISTRICT Lake Dredging Project. Lake Koshkonong Dredging Project Phases of Work. PHASE I Establish goals and objectives Confirm funding sources Assess feasibility of obtaining permits PHASE II Confirm areas and sequence of dredging - PowerPoint PPT PresentationTRANSCRIPT
RSVNG IN EER ING ,E I NC .
ROCK ROCK KOSHKONONG KOSHKONONG LAKE DISTRICTLAKE DISTRICT
Lake Dredging Lake Dredging ProjectProject
Lake Koshkonong Dredging Lake Koshkonong Dredging ProjectProject
Phases of WorkPhases of Work• PHASE IPHASE I– Establish goals and objectivesEstablish goals and objectives– Confirm funding sourcesConfirm funding sources– Assess feasibility of obtaining permitsAssess feasibility of obtaining permits
• PHASE IIPHASE II– Confirm areas and sequence of dredgingConfirm areas and sequence of dredging– Assess physical and chemical characteristics of sedimentAssess physical and chemical characteristics of sediment– Confirm disposal methods and areasConfirm disposal methods and areas– Prepare options analysisPrepare options analysis– Prepare dredging plans and specificationsPrepare dredging plans and specifications– Obtain permitsObtain permits
• PHASE IIIPHASE III– Competitive bidding processCompetitive bidding process– Services During Construction (as requested)Services During Construction (as requested)
RSVNG IN EER ING ,E I NC .
RSVNG IN EER ING ,E I NC .
RSV ENGINEERING, INC.RSV ENGINEERING, INC.
Illustrations & photos courtesy of Keene Engineering
RSVNG IN EER ING ,E I NC .
RSV ENGINEERING, INC.RSV ENGINEERING, INC.
Illustrations & photos courtesy of Keene Engineering
RSVNG IN EER ING ,E I NC .
RSV ENGINEERING, INC.RSV ENGINEERING, INC.
Illustrations & photos courtesy of Keene Engineering
RSVNG IN EER ING ,E I NC .
RSV ENGINEERING, INC.RSV ENGINEERING, INC.
Illustrations & photos courtesy of Keene Engineering
RSVNG IN EER ING ,E I NC .
RSV ENGINEERING, INC.RSV ENGINEERING, INC.
Illustrations & photos courtesy of Keene Engineering
General Information Regarding General Information Regarding Hydraulic DredgingHydraulic Dredging
• A 8”-10” hydraulic dredge (diameter of discharge A 8”-10” hydraulic dredge (diameter of discharge hose) can dredge 100-125 cubic yards per hour.hose) can dredge 100-125 cubic yards per hour.
• A 12”-14” hydraulic dredge can dredge up to 500 A 12”-14” hydraulic dredge can dredge up to 500 cubic yards per hour.cubic yards per hour.
• A lake the size of Lake Koshkonong may require A lake the size of Lake Koshkonong may require the use of multiple dredges.the use of multiple dredges.
• The cutter head is guided through the use of GPS, The cutter head is guided through the use of GPS, underwater cameras, and visual aids.underwater cameras, and visual aids.
• Slurry (sediment & water) can be pumped about Slurry (sediment & water) can be pumped about 3,000 feet before a booster pump is required.3,000 feet before a booster pump is required.
RSVNG IN EER ING ,E I NC .
General Information Regarding General Information Regarding Hydraulic DredgingHydraulic Dredging
• Slurry is generally pumped at a min. flow rate of 14 Slurry is generally pumped at a min. flow rate of 14 feet/sec to allow transport of gravelly material.feet/sec to allow transport of gravelly material.
• Slurry can be pumped into sedimentation basins, lake Slurry can be pumped into sedimentation basins, lake structures, or geo-bags. It can also be transported to structures, or geo-bags. It can also be transported to landfills, farm fields, etc.landfills, farm fields, etc.
• The umbilical (discharge hose) will be floated for several The umbilical (discharge hose) will be floated for several hundred feet before going under the water.hundred feet before going under the water.
• Fishing will be impacted in the close proximity to the Fishing will be impacted in the close proximity to the dredge.dredge.
• Hydraulic dredging minimizes turbidity (suspended Hydraulic dredging minimizes turbidity (suspended solids) in the water over the use of alternative dredging solids) in the water over the use of alternative dredging methods.methods.
RSVNG IN EER ING ,E I NC .
Dredge RatesDredge RatesHours Required To Dredge 1 Acre at Various Depths and RatesHours Required To Dredge 1 Acre at Various Depths and Rates
DredgeDredge QuantityQuantity Dredge Quantity Per HourDredge Quantity Per Hour
DepthDepth cu ydscu yds 100 cy/hr100 cy/hr 200 cy/hr200 cy/hr 300 cy/hr300 cy/hr 400 cy/hr400 cy/hr 500 cy/hr500 cy/hr
(ft)(ft) (yds)(yds) (hrs)(hrs) (hrs)(hrs) (hrs)(hrs) (hrs)(hrs) (hrs)(hrs)
0.50.5 807807 88 44 33 22 22
1.01.0 16131613 1616 88 55 44 33
2.02.0 32273227 3232 1616 1111 88 66
3.03.0 48404840 4848 2424 1616 1212 1010
4.04.0 64536453 6565 3232 2222 1616 1313
5.05.0 80678067 8181 4040 2727 2020 1616
6.06.0 96809680 9797 4848 3232 2424 1919
7.07.0 1129311293 113113 5656 3838 2828 2323
8.08.0 1290712907 129129 6565 4343 3232 2626
9.09.0 1452014520 145145 7373 4848 3636 2929
10.010.0 1613316133 161161 8181 5454 4040 3232
RSVNG IN EER IN G ,E I NC .
Dredge RatesDredge RatesDredge Depth = 0.5 feetDredge Depth = 0.5 feet
% Lake to% Lake to DredgeDredge 24-Hour Days Required24-Hour Days Required
DredgeDredge AreaArea 100 cy/hr100 cy/hr 200 cy/hr200 cy/hr 300 cy/hr300 cy/hr 400 cy/hr400 cy/hr 500 cy/hr500 cy/hr
(%)(%) (acres)(acres) (days)(days) (days)(days) (days)(days) (days)(days) (days)(days)
1010 10461046 352352 176176 117117 8888 7070
2020 20922092 703703 352352 234234 176176 141141
3030 31383138 10551055 527527 352352 264264 211211
4040 41844184 14061406 703703 469469 352352 281281
5050 52305230 17581758 879879 586586 439439 352352
6060 62766276 21092109 10551055 703703 527527 422422
7070 73227322 24612461 12311231 820820 615615 492492
8080 83688368 28132813 14061406 938938 703703 563563
9090 94149414 31643164 15821582 10551055 791791 633633
100100 1046010460 35163516 17581758 11721172 879879 703703
RSVNG IN EER IN G ,E I NC .
Dredge RatesDredge RatesDredge Depth = 1.0 feetDredge Depth = 1.0 feet
% Lake to% Lake to DredgeDredge 24-Hour Days Required24-Hour Days Required
DredgeDredge AreaArea 100 cy/hr100 cy/hr 200 cy/hr200 cy/hr 300 cy/hr300 cy/hr 400 cy/hr400 cy/hr 500 cy/hr500 cy/hr
(%)(%) (acres)(acres) (days)(days) (days)(days) (days)(days) (days)(days) (days)(days)
1010 10461046 703703 352352 234234 176176 141141
2020 20922092 14061406 703703 469469 352352 281281
3030 31383138 21092109 10551055 703703 527527 422422
4040 41844184 28132813 14061406 938938 703703 563563
5050 52305230 35163516 17581758 11721172 879879 703703
6060 62766276 42194219 21092109 14061406 10551055 844844
7070 73227322 49224922 24612461 16411641 12311231 984984
8080 83688368 56255625 28132813 18751875 14061406 11251125
9090 94149414 63286328 31643164 21092109 15821582 12661266
100100 1046010460 70317031 35163516 23442344 17581758 14061406
RSVNG IN EER IN G ,E I NC .