copper bottom paints – a rational approach for marina del rey greg schem, ceo
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Copper Bottom Paints – A Rational Approach for Marina del Rey Greg Schem, CEO Victor Espino, Service Manager Harbor Real Estate Group, LLC April 24, 2014. Bio-fouling over the Years. Techniques of using copper and pitch date back to 1500 BC by Carthaginians and Phoenicians - PowerPoint PPT PresentationTRANSCRIPT
Copper Bottom Paints – A Rational Approach for Marina del Rey
Greg Schem, CEOVictor Espino, Service ManagerHarbor Real Estate Group, LLCApril 24, 2014
Bio-fouling over the YearsTechniques of using copper and pitch date back
to 1500 BC by Carthaginians and PhoeniciansRoyal Navy adds copper to fleet beginning 1770“Copper-Bottomed”: dependable, trustworthyIron Hulled Ships, electrolysis issuesStrong Biocides: TBT, Lead, ArsenicNew Biocides: Non-Copper vs Biocide Free
ConfusionEconea, Zinc, Soft bottoms, ultrasound,
nanotechnology
Copper Bottom
Bio-Fouling Organisms
California Regional Water Quality Control Board (“RWQCB”)2006: Portion of MDR is Designated as an “Impaired Waterway”2014: Reconsideration Meeting, All of MDR designated Impaired along
with SedimentCopper, Lead, Zinc, Chlordane, DDT, BCB’s, etc.Problem for: Water Contact, Shellfish Harvesting, Commercial and
Sportfishing, Wildlife Habitat, Marine, Habitat.10 years to Reduce Copper by 85%Potentially Dredge Entire Marina One Foot Deep: 1.7 million cubic feet Push to Non-Biocide PaintsAB 425: Leech rates and reformulation recommendations.Stripping Bottoms to accommodate Non-biocide PaintsBMP’s for DiversEconomic Analysis by RWQCB
Stripping BottomsCopper Bottom
Stripping Copper Waste
Bottom Paints BasicsBiocide Paints:
CopperOther metalsOther biocides (Econea, Irgarol, snake oil)
Non-Biocide Paints:Hard bottom Soft bottom silicates (Intersleek)Slip liners
Slip LinersOnly relocates bio-fouling to the bottom of the liner which will become very heavy and difficult to haul and clean. Also, pesticides used in the liner can be released into the environment and liners are primarily for smaller vessels.
How do Copper Bottom Paints Work?Cu+ and Cu+2 ionSelf Polishing or Ablative actionBio-Availability and ToxicityTotal Copper vs Biotic Ligand Model (“BLM”)Biocide of Choice?Kills most invasive speciesCA Department of Pesticide Regulation
(“DPR”)
Paints Currently In Use at The BoatYardProduct Name
Paint Type
Require Stripping
Biocide Concentration of Biocide
Cleaning Frequency
Estimated Life (Months)
Approx. Retail Cost/gal
Protector Std. Copper No Cuprous Oxide 53.3% monthly 18-36 $219
Trinidad Pro Std. Copper No Cuprous Oxide/Irgarol 60%/2%
monthly 18-36 $286
Hydrocoat Low Copper No Cuprous Oxide (water based)
40.3% monthly 18-36 $184
Ultima SR 40
Low Copper No Cuprous Oxide/Irgarol 40%/2%
monthly 18-36 $231
Ultima ECO Alt. Biocide Yes Econea/Zinc Omadine 6%/4.8%
3 weeks 10-12 $258
Vivid Low Copper No Copper Thyocianate/Zinc Omadine
25%/2%
3 weeks 12-24 $263
Hydrocoat SR
Low Copper No Cuprous Oxide (water based)
40% monthly 12-36 $223
Hydrocoat Eco
Alt. Biocide No Econea/Zinc Omadine 6%/4.8%
3 weeks 10-12 $240
Vivid Free Alt. Metal Yes Zinc Omadine 4.95% 3 weeks 12-12 $273
Horizons Low Copper No Cuprous Oxide 40.5% monthly 18-36 $205
Hydrocoat SR on Hatteras
Issues with Non-Biocide PaintsIncreased expense to strip bottom ($8,000 avg)Increased cost of paintSilicate paints are soft and easily damagedWill not last as long as biocide paintsNo manufacturer warranty and release
required for Hydrosleek by InterluxPotential increase in transport of invasive
speciesRequire more frequent and more extensive
periodic cleaning
Intersleek 900 by Interlux
Three Legs of a StoolIn order for any copper reduction plan to
work it must have three solid legs:Effective Alternatives: Alterntives must be
proven to work in the real world and backed up by strong manufacturer warranty
Boater Buy-In: Boaters must believe this is the right thing to do and in their best interest for the benefit of the environment
Cost Effective: The alternative must be cost effective and readily avaialable.
Implementation IssuesDesignating the County, the Lessees, and
Boat Owners as Potentially responsible Parties (“PRP’s”), Citizen Law Suits under CWA
Enforcement Challenges: Transients, work done at other harbors
Selective Enforcement: MDR Only?!Grants: Sounds good, but….Training Divers
A Reasonable Approach1st: Site specific conditions and the adoption of the
BLM2nd: Analysis of real world impacts on bio-availability,
and benthic study of indicator species3rd: Remove or reduce Impaired Waterway designation
for marinas. Parking lot for boats analogy.4th: Cost Benefit Analysis of copper risk vs carbon foot
print of dredging5th: Combination of low copper paints, alternative
biocides, and reduction in over-protective threshold can achieve compliance.
Thank You from The BoatYard!
(310) 823-8964
Visit Us: TBYMDR.com