We all know to be vigilant with testing requirements and remedies concerning our water wells & springs when drawing up our lease addendums, but what about our surface waters? Our ponds, creeks, & runs need to be monitored. Is this something that landowners should be overseeing with specific lease addendums, or does this fall under the jurisdiction of the state EPA, or in my case the PA. DEP?  With different gas companies drilling in proximity to the same creek, how can liability be pinpointed?