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Greatwood Management Company Services

Provide Owners with clear, unbiased, Engineering and Science-based Project Management on Civil and Environmental Projects. Greatwood Management Company Services. Law Firms Insurance Firms Claims Management Firms Fuel Companies Superfund and RCRA Sites Developers Municipalities.

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Greatwood Management Company Services

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  1. Provide Owners with clear, unbiased, Engineering and Science-based Project Management on Civil and Environmental Projects Greatwood Management CompanyServices

  2. Law Firms Insurance Firms Claims Management Firms Fuel Companies Superfund and RCRA Sites Developers Municipalities Types of Clients

  3. Case Studies What Strong Project Management Can do for Me!

  4. Case Study #1 The Vermont Project

  5. Large former industrial site Petroleum and Chlorinated solvent contamination No consultant had been retained Vermont ProjectBackground

  6. Collect round of groundwater samples from existing wells Collect soil samples from below the slab Vermont ProjectScope of Work

  7. Vermont Project Comparison of Original and Competitive Estimates for Identical Scope of Work from The Same Consultant

  8. Vermont ProjectHealth and Safety Plan (HSP) Competitive Proposal $202 Original Proposal $2000 89.9% Reduction While required by Federal OSHA regulations, only three or four pages need to be changed for each site.

  9. Vermont ProjectEnvironmental Scientist (per hour) Competitive Proposal $58 Original Proposal $60 3.3% Reduction While a 3.3% reduction does not seem like a significant rate, multiply the savings By the total hours estimated for the project Provides a project savings of more than $400.

  10. Vermont ProjectDirect Expenses Including Sampling Original Proposal $800 Competitive Proposal $578 27.8% Reduction The competitive estimate scope of work required a more extensive and expensive method of collecting groundwater samples. even so, it was almost $225 cheaper than the standard bailer method estimated in the original proposal.

  11. Vermont ProjectWork Plan Preparation Original Proposal $240 Competitive Proposal $0 100% Reduction The work plan preparation was included in the competitive estimate within the $202 charge of the HSP line item.

  12. Vermont ProjectTotal Savings Original Proposal $3472 Competitive Proposal $951 72% Reduction Overall

  13. Case Study #2 The New York Project

  14. 11 Property Parcel 42 Underground Stroage Tanks (USTs) Volatile Organic Compounds (VOCs) Polynuclear Aromatic Hydrocarbons (PAHs) Consultant has been retained by the Client New York City ProjectBackground

  15. 10 Monitoring Wells Multitude of soil samples Analytical parameters including PCBs, metals, waste characterization including flammability $183,000 for the FIRST phase New York City ProjectConsultant’s Proposal

  16. 5 monitoring wells 10 soil borings Volatile and semivolatile organic analysis only $68,000 for the ONLY phase New York City ProjectGreatwood Management’s Proposal

  17. Same scientific understanding of the site. 63% reduction in the cost of the initial investigation 50% or more reduction in long term monitoring costs. New York City ProjectConclusion

  18. 16,000 tons of contaminated soils identified by consultant. Maximum concentration of 20 ppm of SVOC contamination within soils. 640 lbs of contamination in the soil. New York City ProjectClean Up!

  19. Case Study #3 150 Gallon Drip

  20. While putting away summer lawn furniture, the copper line from a 275 gallon oil storage tank was broken. The tank free flowed for a period of 15 minutes and trickled for a period of 30 additional minutes. 150 Gallon Drip

  21. The tank had been filled approximately October 8. Release occurred on October 25 150 Gallon Drip

  22. The oil company transferred the oil from the old tank to a new tank. The oil company measured a free head space in the new tank of 6 inches. An oil tank is typically only filled approximately 90%. 150 Gallon Drip

  23. There is a three inch floor drain that penetrates the floor of the basement. The staining indicates oil has entered the floor drain. The Fire Department has estimated a loss of 150 gallons due to the leak. 150 Gallon Drip

  24. How bad is the problem? 150 Gallon Drip

  25. How much oil was lost? How would you investigate this site? What remedial/monitoring measures would you allow your client to accept? 150 Gallon Drip

  26. You know the size and shape of the tank. You know the approximate depth of the whistle. You can estimate the burn rate from the date of the fill to the date of the release. 150 Gallon Drip Free Space Estimate

  27. The tank has a rounded top making depth estimate difficult. You don’t know the real depth of the whistle, which could have a difference of up to two inches in length. 150 Gallon Drip Free Space Estimate

  28. 150 Gallon Drip Free Space Estimate When we estimate the volume of oil released from the tank, using this method, we estimated the tank ACCUMULATED approximately 17 gallons of oil!

  29. 150 Gallon Drip Flow Rate Method You also know the diameter of the line that discharged from the tank.

  30. You know the approximate depth of oil in the tank before the release. You know the depth of oil relatively accurately in the new tank. You know the diameter of the line that discharges from the tank. You may have heard of Gravity! 150 Gallon Drip Flow Rate Method

  31. 150 Gallon DripFlow Rate Method Assuming that the sheared off oil line behaved as a simple pipe, an estimate of the flow rate, hence volume, of the release was made using the following equation: ____ Q = cA √2gh Where: Q = Flow in cfs c = Coefficient of Discharge A = Area of Discharge pipe g = Acceleration of Gravity h = head, height of column of fluid in tank

  32. 150 Gallon Drip Flow Rate Method ____ Q = cA √2gh Using a worst case scenario, we assumed that c = 1 and h is constant at 44 inches. Therefore, the flow Q is calculated as 0.0052 cfs If we further assume that full flow was allowed for the estimated 15 minutes the home owner estimates elapsed from the moment of release to the point where the flow was completed stopped, a total of approximately 4.7 gallons escaped the tank onto the basement floor.

  33. 150 Gallon DripFlow Rate Method • The Rest of the Story • The home owner had captured approximately • 3.7 gallons of oil in a bucket before they were • able to stop the flow completely. • Therefore, the estimated release volume was: • APPROXIMATELY ONE GALLON

  34. TV the drain and found no accumulated oil Excavated the discharge are of the floor drain and found no accumulated oil Monitored the drinking water well at the Residence twice (6 months apart) and found no detectable contaminants. 150 Gallon Drip

  35. Client was an environmental lawyer. More than 20 years of experience. Published in law journals. Superfund, RCRA and State hazardous waste site experence. 150 Gallon Drip

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