Andy Hinson
New member
This is only a small part of requirements. They also will not allow any acidic chemicals.
Contractor Requirements: The Contractor is to safely remove all biological growth i.e. algae, lichen, fungus, phosphorescence, metal stains, dirt or clay stains as well as industrial and environmental pollutants. This shall be accomplished by applying safe approved chemistry to surfaces with approved applicators using a process not to exceed 50 PSI. Rinse the same surface with water using approved applicator providing no more than 250 PSI at anytime on any point. This system must be a soft-wash system. The contractor shall not use any hose that exceeds a maximum rating of 600 psi. Chemicals must not be offensive to the senses and safe for the environment. Note: no acidic chemistry will be approved. Sound levels must not be obtrusive. At all times care be taken to protect pedestrians/students from harm and inconvenience. Starting and stopping times for work shall be at the clients discretion (note: night & weekend work will be required). The main priority being the safety of pedestrians and staff. The end result will be a clean streak free surface leaving no residue of biological growth, pollutants and or chemicals. All windows, doors, metal panels and electrical devices, shall remain unchanged and undamaged. The Contractor shall dispose of all residues and other work- related refuse from the jobsite at his expense following all local rules, codes and regulations.
Contractor Requirements: The Contractor is to safely remove all biological growth i.e. algae, lichen, fungus, phosphorescence, metal stains, dirt or clay stains as well as industrial and environmental pollutants. This shall be accomplished by applying safe approved chemistry to surfaces with approved applicators using a process not to exceed 50 PSI. Rinse the same surface with water using approved applicator providing no more than 250 PSI at anytime on any point. This system must be a soft-wash system. The contractor shall not use any hose that exceeds a maximum rating of 600 psi. Chemicals must not be offensive to the senses and safe for the environment. Note: no acidic chemistry will be approved. Sound levels must not be obtrusive. At all times care be taken to protect pedestrians/students from harm and inconvenience. Starting and stopping times for work shall be at the clients discretion (note: night & weekend work will be required). The main priority being the safety of pedestrians and staff. The end result will be a clean streak free surface leaving no residue of biological growth, pollutants and or chemicals. All windows, doors, metal panels and electrical devices, shall remain unchanged and undamaged. The Contractor shall dispose of all residues and other work- related refuse from the jobsite at his expense following all local rules, codes and regulations.