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Home My WebLink About2011-081 -y �O 3 -22- 4811 . CHANGE ORDER NO , 1 DATE OF ISSUANCE : EFFECTIVE DATE : OWNER : INDIAN RIVER COUNTY CONTRACTOR : Hydromentia , Inc . PROJECT : Pilot Algal Turf Scrubber for PC South ENGINEER : INDIAN RIVER COUNTY You are directed to make the following changes in the Contract Documents : Increase/ Decrease Increase/ Decrease Item Description in Contract Time in Contract Price ( Calendar Days ) Operate the ATS pilot system using a 1 : 1 canal water to RO brine mix in 1 . 0 laccorclance with Attachment No . 1 $ 15 , 165 . 00 84 . 0 TOTALS $ 15 , 165 . 00 84 . 0 CHANGE IN CONTRACT PRICE Description Amount Original Contract Price $ 188, 000 . 00 Net increase/decrease from previous Change Orders $ 0 . 00 Contract Price prior to this Change Order $ 188, 000 . 00 Net increase/decrease of this Change Order $ 15 , 165 . 00 Contract Price with all approved Change Orders $ 203, 165 . 00 CHANGE IN CONTRACT TIME ( Calendar Days ) Description Amount Original Contract Time for Final Completion 168 . 0 Net increase/decrease from previous Change Orders 0 . 0 Contract Time for Final Completion prior to this Change Order 168 . 0 Net increase/decrease of this Change Order to Final Completion 84 . 0 Contract Time for Final Completion with all approved Change Orders 252 . 0 3 -22- CHANGE -z2.-CHANGE ORDER NO , 1 DATE OF ISSUANCE : EFFECTIVE DATE : OWNER : INDIAN RIVER COUNTY CONTRACTOR : Hydromentia, Inc . PROJECT : Pilot Algal Turf Scrubber for PC South ENGINEER : INDIAN RIVER COUNTY You are directed to make the following changes in the Contract Documents : I Increase/ Decreasencrease/ Decrease Item Description in Contract Price in Contract Time ( Calendar Days ) Operate the ATS pilot system using a 1 : 1 canal water to RO brine mix in 1 . 0 laccordance with Attachment No . 1 $ 15 , 165 . 00 84 . 0 TOTALS $ 15 , 165 . 00 84 . 0 CHANGE IN CONTRACT PRICE Description Amount Original Contract Price $ 188 , 000 . 00 Net increase/decrease from previous Change Orders $ 0 . 00 Contract Price prior to this Change Order $ 188, 000 . 00 Net increase/decrease of this Change Order $ 15 , 165 . 00 Contract Price with all approved Change Orders $ 203, 165 . 00 CHANGE IN CONTRACT TIME ( Calendar Days ) Description Amount Original Contract Time for Final Completion 168 . 0 Net increase/decrease from previous Change Orders 0 . 0 Contract Time for Final Completion prior to this Change Order 168 . 0 Net increase/decrease of this Change Order to Final Completion 84 . 0 Contract Time for Final Completion with all approved Change Orders 252 . 0 ACCEPTED : RECOMMENDED :M EN DED : By : Z/A By : gg CONTRACTOR ( § a r EN NEE ignature ) - Keith ully, Hydromentia , In P . E . , Indian River County Stormwater Engineering Division ( Name and Title ) AgI.LKyT , 14Cd I Date : — 2011 Date : 3Alzeol/ 0 aa,J��d COMI��ss°"•. APPROVED : . , p ' • . �0,�,�, v . , � •, : %Ira OWNER : Bob Solari , Chairman , indian e River County Board of County too cy Commissioners off �. c� 000� •�p�'� Date : MArrh 99 APPROVED AS TO FO AN IUFF l 8Y WILLIAM K . DEBRAAL DEPUTY COUNTY ATTORNEY ACCEPTED : RECOMMENDED :M EN DED : By : Z/A By : gg CONTRACTOR ( § a r EN NEE ignature ) - Keith ully, Hydromentia , In P . E . , Indian River County Stormwater Engineering Division ( Name and Title ) AgI.LKyT , 14Cd I Date : — 2011 Date : 3Alzeol/ 0 aa,J��d COMI��ss°"•. APPROVED : . , p ' • . �0,�,�, v . , � •, : %Ira OWNER : Bob Solari , Chairman , indian e River County Board of County too cy Commissioners off �. c� 000� •�p�'� Date : MArrh 99 APPROVED AS TO FO AN IUFF l 8Y WILLIAM K . DEBRAAL DEPUTY COUNTY ATTORNEY ATTACHMENT 1 TO CHANGE ORDER NO . 1 Request for Change in Work Order Cost Work Order PCS =1 September 7 , 2010 Pilot Algal Turf Scrubber® for PC South Associated with Continuing Contract for Professional Services Dated March 15 , 2005 Amended March 4 , 2008 Between Indian River County , Florida and HydrofiMentia , Inc Submitted March 4 , 2011 ATTACHMENT 1 TO CHANGE ORDER NO . 1 Request for Change in Work Order Cost Work Order PCS =1 September 7 , 2010 Pilot Algal Turf Scrubber® for PC South Associated with Continuing Contract for Professional Services Dated March 15 , 2005 Amended March 4 , 2008 Between Indian River County , Florida and HydrofiMentia , Inc Submitted March 4 , 2011 Scope : The PC South Algal Turf Scrubber(D Pilot was implemented with the intent of determining the applicability of the technology to meet targeted performance goals and identifying critical performance parameters to be applied to a proposed full scale Algal Turf Scrubber® system to be designed to provide 1 ) reduction and recovery of nutrients from the South Canal within Indian River County , as managed by the Indian River Farms Water Control District ( IRFWCD) and 2 ) elimination of biological toxicity associated with a Reverse Osmosis ( RO ) Concentrate . The operational protocol originally delineated for the pilot was to dilute the RO Concentrate with the water from the South Canal at a proportion of about 10 % RO concentrate . The pilot investigation was initiated on 1 / 17/2011 . Laboratory data to date provides indication that the system at the stated dilution does render the blended water non -toxic , and is effective in removing and recovering both nitrogen and phosphorus at rates within expected ranges . To this extent , the system appears applicable and appropriate for meeting the project intent at a 10 % RO Concentrate , 90 % Canal water blend Based upon reviews by the County staff and HydroMentia of historical flow patterns within the South Canal in the vicinity of the proposed full scale facility , it was determined that flows within the canal would not always be sufficient to ensure the 90 % dilution of the RO Concentrate , which is projected to have a constant flow rate of about 1 MGD . Consequently , it was decided that based upon the worst case low flow conditions within the canal of 1 MGD , that the most conservative dilution would be 1 : 1 , or 50 % RO Concentrate and 50 % Canal water . To accommodate this design feature , it was decided that the pilot system should be adjusted to receive a 1 : 1 blend , and assessed accordingly both in terms of nutrient removal and toxicity . Because the shift in the influent blend will result in a significant increase in conductivity (salinity) , it will be necessary to change the bioassay protocol from freshwater species (fathead minnows and daphnia ) to marine/estuarine species ( mysid shrimp and menidia minnows ) . To adequately assess the toxicity of this new blend , six additional bioassay tests will be required , using these marine/estuarine species . Three of these will be acute tests , which if found non toxic , will be followed by three chronic tests . Following about 12 weeks of operation under the new blend conditions , the system will be again returned to the 10 % RO Concentrate blend , and planned chronic bioassay testing of the freshwater species will be completed . This revised program will not only allow assessment of the efficacy of the technology under these two conditions , but will permit assessment of performance during the transitional period associated with changes in blends , during which time the algal turf community will undergo ecological adjustments . Scope : The PC South Algal Turf Scrubber(D Pilot was implemented with the intent of determining the applicability of the technology to meet targeted performance goals and identifying critical performance parameters to be applied to a proposed full scale Algal Turf Scrubber® system to be designed to provide 1 ) reduction and recovery of nutrients from the South Canal within Indian River County , as managed by the Indian River Farms Water Control District ( IRFWCD) and 2 ) elimination of biological toxicity associated with a Reverse Osmosis ( RO ) Concentrate . The operational protocol originally delineated for the pilot was to dilute the RO Concentrate with the water from the South Canal at a proportion of about 10 % RO concentrate . The pilot investigation was initiated on 1 / 17/2011 . Laboratory data to date provides indication that the system at the stated dilution does render the blended water non -toxic , and is effective in removing and recovering both nitrogen and phosphorus at rates within expected ranges . To this extent , the system appears applicable and appropriate for meeting the project intent at a 10 % RO Concentrate , 90 % Canal water blend Based upon reviews by the County staff and HydroMentia of historical flow patterns within the South Canal in the vicinity of the proposed full scale facility , it was determined that flows within the canal would not always be sufficient to ensure the 90 % dilution of the RO Concentrate , which is projected to have a constant flow rate of about 1 MGD . Consequently , it was decided that based upon the worst case low flow conditions within the canal of 1 MGD , that the most conservative dilution would be 1 : 1 , or 50 % RO Concentrate and 50 % Canal water . To accommodate this design feature , it was decided that the pilot system should be adjusted to receive a 1 : 1 blend , and assessed accordingly both in terms of nutrient removal and toxicity . Because the shift in the influent blend will result in a significant increase in conductivity (salinity) , it will be necessary to change the bioassay protocol from freshwater species (fathead minnows and daphnia ) to marine/estuarine species ( mysid shrimp and menidia minnows ) . To adequately assess the toxicity of this new blend , six additional bioassay tests will be required , using these marine/estuarine species . Three of these will be acute tests , which if found non toxic , will be followed by three chronic tests . Following about 12 weeks of operation under the new blend conditions , the system will be again returned to the 10 % RO Concentrate blend , and planned chronic bioassay testing of the freshwater species will be completed . This revised program will not only allow assessment of the efficacy of the technology under these two conditions , but will permit assessment of performance during the transitional period associated with changes in blends , during which time the algal turf community will undergo ecological adjustments . Change in Work Order Costs Noted in Table 1 is a listing of proposed cost changes . The laboratory costs are from direct quotes from the pre -selected laboratory , Marinco Inc , of Sarasota , Florida . Hourly rates for HydroMentia labor is as listed within the existing Agreement between the County and HydroMentia . • Mysid /Menidia Each $ 850 3 $ 2 , 550 Acute Bioassay ' Mysid /Menidia Each $ 2 , 900 3 r$ 8 , 700 Chronic Bioassay Fedex for Delivery $ 65 3 $ 195 Acute Test Fedex for Delivery $ 140 9 $ 1 , 260 Chronic Test2 Ice for Acute 20 lb bag $4 . 00 3 $ 12 Test Ice for 20 lb bag $4 . 00 27 $ 108 Chronic Test A Stewart Hour $ 135 6 $ 810 Labor R Bazurto Hour $ 85 18 $ 1 , 530 Labor TOTAL $ 159165 1 . Three acute tests need to be shown non -toxic before proceeding with chronic testing . This request does not include costs of additional acute tests which might be needed . 2 . Chronic testing requires delivery of 5 gallons of composited samples on Tuesday , Thursday and Saturday for each of the 3 tests . Samples need to be sent one day delivery in AM . Change in Work Order Costs Noted in Table 1 is a listing of proposed cost changes . The laboratory costs are from direct quotes from the pre -selected laboratory , Marinco Inc , of Sarasota , Florida . Hourly rates for HydroMentia labor is as listed within the existing Agreement between the County and HydroMentia . • Mysid /Menidia Each $ 850 3 $ 2 , 550 Acute Bioassay ' Mysid /Menidia Each $ 2 , 900 3 r$ 8 , 700 Chronic Bioassay Fedex for Delivery $ 65 3 $ 195 Acute Test Fedex for Delivery $ 140 9 $ 1 , 260 Chronic Test2 Ice for Acute 20 lb bag $4 . 00 3 $ 12 Test Ice for 20 lb bag $4 . 00 27 $ 108 Chronic Test A Stewart Hour $ 135 6 $ 810 Labor R Bazurto Hour $ 85 18 $ 1 , 530 Labor TOTAL $ 159165 1 . Three acute tests need to be shown non -toxic before proceeding with chronic testing . This request does not include costs of additional acute tests which might be needed . 2 . Chronic testing requires delivery of 5 gallons of composited samples on Tuesday , Thursday and Saturday for each of the 3 tests . Samples need to be sent one day delivery in AM . -y �O 3 -22- 4811 . CHANGE ORDER NO , 1 DATE OF ISSUANCE : EFFECTIVE DATE : OWNER : INDIAN RIVER COUNTY CONTRACTOR : Hydromentia , Inc . PROJECT : Pilot Algal Turf Scrubber for PC South ENGINEER : INDIAN RIVER COUNTY You are directed to make the following changes in the Contract Documents : Increase/ Decrease Increase/ Decrease Item Description in Contract Time in Contract Price ( Calendar Days ) Operate the ATS pilot system using a 1 : 1 canal water to RO brine mix in 1 . 0 laccorclance with Attachment No . 1 $ 15 , 165 . 00 84 . 0 TOTALS $ 15 , 165 . 00 84 . 0 CHANGE IN CONTRACT PRICE Description Amount Original Contract Price $ 188, 000 . 00 Net increase/decrease from previous Change Orders $ 0 . 00 Contract Price prior to this Change Order $ 188, 000 . 00 Net increase/decrease of this Change Order $ 15 , 165 . 00 Contract Price with all approved Change Orders $ 203, 165 . 00 CHANGE IN CONTRACT TIME ( Calendar Days ) Description Amount Original Contract Time for Final Completion 168 . 0 Net increase/decrease from previous Change Orders 0 . 0 Contract Time for Final Completion prior to this Change Order 168 . 0 Net increase/decrease of this Change Order to Final Completion 84 . 0 Contract Time for Final Completion with all approved Change Orders 252 . 0