it is understandable, but could be phrased better. is this a letter to someone? or what is the porous?
Irena Jaros founder of the Łódź Foodbank, has been involved in charity work for many years. Involved in numer of initiatives for children:( these seem out of place> „St. Nicholas’ Ambulance”, „We share what we have”, „Food fundraising”. maybe site where they are taken from?) She also organizes summer camps for kids.
1. how long have you been helping children?
starting 1991, responding to Jacek Kuroń’s appeal “Let’s give summer to children”, I organised camps for young kids from disadvantaged families. Since then every summer we organize trips for children who wouldn't have seen the sea or lakes.
Of course we owe a lot to volunteers. ( most believe that Volunteers are part of a thing not separate, so this phrasing gives credit to them with out separating them from the organization)