Error message

  • Deprecated function: Return type of DatabaseStatementBase::execute($args = [], $options = []) should either be compatible with PDOStatement::execute(?array $params = null): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2244 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in drupal_random_bytes() (line 2268 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: Optional parameter $type declared before required parameter $key is implicitly treated as a required parameter in include_once() (line 1389 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: Return type of DateObject::__wakeup() should either be compatible with DateTime::__wakeup(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 143 of /home/envicon/public_html/sites/all/modules/date/date_api/date_api.module).
  • Deprecated function: Return type of DateObject::format($format, $force = false) should either be compatible with DateTime::format(string $format): string, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 143 of /home/envicon/public_html/sites/all/modules/date/date_api/date_api.module).
  • Deprecated function: Return type of DateObject::setTimezone($tz, $force = false) should either be compatible with DateTime::setTimezone(DateTimeZone $timezone): DateTime, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 143 of /home/envicon/public_html/sites/all/modules/date/date_api/date_api.module).
  • Deprecated function: Optional parameter $input declared before required parameter $form_state is implicitly treated as a required parameter in include_once() (line 1389 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: Optional parameter $data declared before required parameter $name is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $data declared before required parameter $name is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $file declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $account declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $entity declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $account declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $values declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $view_mode declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $langcode declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $input declared before required parameter $form_state is implicitly treated as a required parameter in require_once() (line 8 of /home/envicon/public_html/sites/all/modules/multiupload_filefield_widget/multiupload_filefield_widget.module).
  • Deprecated function: Optional parameter $conditions declared before required parameter $data is implicitly treated as a required parameter in include_once() (line 1389 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: Optional parameter $item declared before required parameter $complete_form is implicitly treated as a required parameter in include_once() (line 1389 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: rtrim(): Passing null to parameter #1 ($string) of type string is deprecated in url() (line 2349 of /home/envicon/public_html/includes/common.inc).
  • Deprecated function: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in url_is_external() (line 2393 of /home/envicon/public_html/includes/common.inc).
  • Deprecated function: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in url_is_external() (line 2395 of /home/envicon/public_html/includes/common.inc).
  • Deprecated function: ltrim(): Passing null to parameter #1 ($string) of type string is deprecated in url() (line 2311 of /home/envicon/public_html/includes/common.inc).
Senior Research and Development Officer

Eng. Leonard Gastory holds Msc. in Integrated Environmental Management (MIEM) and Bsc. in Civil and Water Resources Engineering. He is an Environmental Expert registered by the National Environment Management Council – NEMC and a Professional Civil Engineer registered by the Engineers Registration Board of Tanzania - ERB. 

He works as ENVICON Senior Research and Development Officer. He has about 10 years experience of working in Tanzania and East Africa in general in the areas of environmental management, water resource management, and engineering. 
He has participated in provision of consultancy services in major projects related to: 
Planning, design and construction supervision of integrated wastewater management facilities including, constructed wetlands, biogas plants and sewerage systems; 

  • Planning, design and construction supervision of water supply and storage facilities; 
  • Facilitation in water and sanitation projects; 
  • Environmental impact assessment and audit for various infrastructural development; 
  • Environmental conservation projects; 
  • Feasibility and baseline studies; and Research works and surveys.   

Eng. Leonard has practical experience in initiating, managing and coordinating various community based actions and capacity building programme including trainings and workshops. Leonard is exceptionally skilled in raising enthusiasm and engages with people from all walks of life.  

He has organized a number of educational and community based environment and water programmes.  He has also facilitated some local and international training in environmental and natural resources management; this involves liaising with government ministers, institutions, schools, students and community members, which he does with confidence and success.