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    Front view of group of multi ethnic volunteers cleaning beach while sitting on their knees on a sunny day — Stock Photo
    Front view of group of multi ethnic volunteers cleaning beach while sitting on their knees on a sunny day
    Front side of young Caucasian female volunteer cleaning beach on a sunny day — Stock Photo
    Front side of young Caucasian female volunteer cleaning beach on a sunny day
    Front view of multi ethnic group of Volunteers forming hand stack on the beach — Stock Photo
    Front view of multi ethnic group of Volunteers forming hand stack on the beach
    Front view of multi ethnic group of Volunteers forming hand stack on the beach — Stock Photo
    Front view of multi ethnic group of Volunteers forming hand stack on the beach
    Pollution control inspector taking sample of soil at pollution site — Stock Photo
    Pollution control inspector taking sample of soil at pollution site
    Low section of female volunteer cleaning beach on a sunny day — Stock Photo
    Low section of female volunteer cleaning beach on a sunny day
    Pollution control inspector taking sample at pollution site. — Stock Photo
    Pollution control inspector taking sample at pollution site.
    Front view of group of multi ethnic volunteers cleaning beach while sitting in squat position in front of buckets on a sunny day — Stock Photo
    Front view of group of multi ethnic volunteers cleaning beach while sitting in squat position in front of buckets on a sunny day
    High angle view of young Caucasian female volunteers finding waste with a net at beach on a sunny day — Stock Photo
    High angle view of young Caucasian female volunteers finding waste with a net at beach on a sunny day
    Mid section of group of volunteers forming hands stack on the beach — Stock Photo
    Mid section of group of volunteers forming hands stack on the beach
    Water quality inspector filling sample container with river water at pollution site. — Stock Photo
    Water quality inspector filling sample container with river water at pollution site.
    Pollution control inspector in protective suit taking sample of toxic substance leaking from oil drum. — Stock Photo
    Pollution control inspector in protective suit taking sample of toxic substance leaking from oil drum.
    Low section of female volunteer holding a special strainer at beach on a sunny day — Stock Photo
    Low section of female volunteer holding a special strainer at beach on a sunny day
    Mid section of volunteers cleaning beach on a sunny day. Male is holding plastic bag while female puts the rubbish into the bag. — Stock Photo
    Mid section of volunteers cleaning beach on a sunny day. Male is holding plastic bag while female puts the rubbish into the bag.
    Side view of young Caucasian female volunteer cleaning beach on a sunny day — Stock Photo
    Side view of young Caucasian female volunteer cleaning beach on a sunny day
    Close-up of volunteer holding waste in hand at beach on a sunny day — Stock Photo
    Close-up of volunteer holding waste in hand at beach on a sunny day
    Front view of African American male volunteers cleaning beach on a sunny day — Stock Photo
    Front view of African American male volunteers cleaning beach on a sunny day
    Pollution control inspector working and examining discarded barrel. — Stock Photo
    Pollution control inspector working and examining discarded barrel.
    Water quality inspector taking sample of water at suspected pollution site — Stock Photo
    Water quality inspector taking sample of water at suspected pollution site
    Pollution control inspector taking sample of polluted water from spring in field. — Stock Photo
    Pollution control inspector taking sample of polluted water from spring in field.
    Low section of volunteer cleaning beach on a sunny day — Stock Photo
    Low section of volunteer cleaning beach on a sunny day
    Side view of young Caucasian female volunteer cleaning beach on a sunny day. She is touching the sand. — Stock Photo
    Side view of young Caucasian female volunteer cleaning beach on a sunny day. She is touching the sand.
    Mid section of female volunteer cleaning beach on a sunny day — Stock Photo
    Mid section of female volunteer cleaning beach on a sunny day
    Pollution control inspector taking sample of mud in field by lake. — Stock Photo
    Pollution control inspector taking sample of mud in field by lake.
    Front view of multi ethnic volunteers cleaning beach on a sunny day — Stock Photo
    Front view of multi ethnic volunteers cleaning beach on a sunny day
    Front view of group of multi ethnic volunteers sitting on their knees to clean the beach on a sunny day — Stock Photo
    Front view of group of multi ethnic volunteers sitting on their knees to clean the beach on a sunny day
    Portrait of young mixed race woman writing on clipboard at beach on a sunny day — Stock Photo
    Portrait of young mixed race woman writing on clipboard at beach on a sunny day
    Front view of multi ethnic female volunteers discussing over clipboard while standing behind table on the beach — Stock Photo
    Front view of multi ethnic female volunteers discussing over clipboard while standing behind table on the beach
    Front view of multi ethnic volunteers cleaning beach on a sunny day — Stock Photo
    Front view of multi ethnic volunteers cleaning beach on a sunny day
    Low section of group of volunteers cleaning beach on a sunny day — Stock Photo
    Low section of group of volunteers cleaning beach on a sunny day
    Factory with smokestack in California, USA — Stock Photo
    Factory with smokestack in California, USA
    Helicopter flying over Forest Fire in Lytton, British Columbia, Canada — Stock Photo
    Helicopter flying over Forest Fire in Lytton, British Columbia, Canada
    Factory with smokestack in California, USA — Stock Photo
    Factory with smokestack in California, USA
    Front view of group of multi ethnic volunteers cleaning beach with buckets in their hands on a sunny day — Stock Photo
    Front view of group of multi ethnic volunteers cleaning beach with buckets in their hands on a sunny day
    Biologist hand with protective glove holding trowel with soil above samples separated in containers. — Stock Photo
    Biologist hand with protective glove holding trowel with soil above samples separated in containers.
    Hands of scientist in laboratory measuring pH of soil samples by electronic pH meter. — Stock Photo
    Hands of scientist in laboratory measuring pH of soil samples by electronic pH meter.
    Female agronomist taking notes in field of soil. — Stock Photo
    Female agronomist taking notes in field of soil.
    Female agronomist measuring soil temperature with thermometer in field. — Stock Photo
    Female agronomist measuring soil temperature with thermometer in field.
    Female agronomist taking sample with soil probe sampler. — Stock Photo
    Female agronomist taking sample with soil probe sampler.
    Hands of scientist in laboratory measuring pH of soil samples by electronic pH meter. — Stock Photo
    Hands of scientist in laboratory measuring pH of soil samples by electronic pH meter.
    Female scientist measuring PH of soil samples with litmus strips. — Stock Photo
    Female scientist measuring PH of soil samples with litmus strips.
    Agronomy specialist taking soil sample for fertility analysis. — Stock Photo
    Agronomy specialist taking soil sample for fertility analysis.
    Agronomy specialist taking soil sample for fertility analysis. — Stock Photo
    Agronomy specialist taking soil sample for fertility analysis.
    Female agronomist taking notes in field of soil. — Stock Photo
    Female agronomist taking notes in field of soil.
    Female scientist in white coat measuring PH of soil sample with litmus strips. — Stock Photo
    Female scientist in white coat measuring PH of soil sample with litmus strips.
    Close-up of a motorcycle exhaust pipes in workshop — Stock Photo
    Close-up of a motorcycle exhaust pipes in workshop
    Female agronomist taking sample with soil probe sampler. — Stock Photo
    Female agronomist taking sample with soil probe sampler.
    Urban scene of oil and gas industry in daylight — Stock Photo
    Urban scene of oil and gas industry in daylight
    Female agronomist taking notes in field of soil. — Stock Photo
    Female agronomist taking notes in field of soil.
    Close-up of a motorcycle exhaust pipes in workshop — Stock Photo
    Close-up of a motorcycle exhaust pipes in workshop
    Female agronomist taking sample with soil probe sampler. — Stock Photo
    Female agronomist taking sample with soil probe sampler.
    Agronomist putting soil with garden shovel in soil sample bag. — Stock Photo
    Agronomist putting soil with garden shovel in soil sample bag.
    Agronomist opening soil sample bag in field. — Stock Photo
    Agronomist opening soil sample bag in field.
    Female agronomist taking notes in field of soil. — Stock Photo
    Female agronomist taking notes in field of soil.
    Female agronomist taking sample with soil probe sampler. — Stock Photo
    Female agronomist taking sample with soil probe sampler.
    Female agronomist taking sample with soil probe sampler. — Stock Photo
    Female agronomist taking sample with soil probe sampler.
    Female agronomist taking soil sample for fertility analysis. — Stock Photo
    Female agronomist taking soil sample for fertility analysis.
    Hands of scientist in laboratory measuring pH of soil samples by electronic pH meter. — Stock Photo
    Hands of scientist in laboratory measuring pH of soil samples by electronic pH meter.
    Female agronomist taking sample with soil probe sampler. — Stock Photo
    Female agronomist taking sample with soil probe sampler.
    Organic soil certification inspector marking sample. — Stock Photo
    Organic soil certification inspector marking sample.