QUICK-N-DIRTY CLEANUP — The Windward Ahupua'a Alliance will hold a Quick-n-Dirty Cleanup of Kapa'a Quarry Road, 12:30-2 p.m. Aug. 12, followed by a pau hana party; meet at 12:15 p.m. at pull-off area opposite Le Jardin for supplies and work assignments. Closed-toe shoes with gripping soles required, bring hat and long-sleeved shirt; tools, trash bags, gloves, sunscreen, bug spray and bottled water provided. High-school students needing community service credits must register at 224-4496.

DIAMOND HEAD SERVICE — Help remove fountain grass from Diamond Head State Monument, 3-7 p.m. Saturday; meet at parking lot. Bring water, sunscreen, sturdy walking shoes, hat. Call 286-4616 or e-mail oisc@hawaii.edu.

NATIVE FOREST PLANTING — Planting trip at Pu'u Makua, 8 a.m.-4 p.m. Saturday; meet at 'Ulupalakua Ranch Store. Hiking boots required; bring rain gear, 2 liters of water, lunch, sunscreen, hat. Register at 808-572-4471 or auwahi@yahoo.com.

WORM COMPOSTING — Learn vermicomposting basics in separate workshops at 9:30 a.m. Aug. 18 and 1 p.m. Aug. 19 at the Manoa Gardens Elderly Housing Community Center; $30, includes minibin, starter colony and manual. Contact 382-0432 or waikikiworm@hawaii.rr.com.

SIERRA CLUB BEER NIGHT — Hear presentations on environmental topics and how to get involved, at Cassis, 66 Queen St.: 5:30-7:30 p.m. Aug. 22, global warming update with Jeff Mikulina; 5:30-7:30 p.m. Sept. 26, curbside recycling with Betty Gearan.

POUHALA MARSH RESTORATION — Volunteers needed to pull pickleweed and mangrove at the Waipahu marsh, 8:30-11:30 a.m. Aug. 18. Bring work gloves, water, hat, sunscreen, towel and change of clothes; covered footwear and long pants required. Contact Pauline Kawamata at 955-0100, ext. 18.

THURSDAY HELPERS — Kaua'i's Limahuli Garden & Preserve seeks volunteers to restore native forest on Thursdays, 8-11 a.m. Call Lahela Correa, 808-826-1053, or Lea Taddonio, 808-332-7324, ext. 228.

CHUN'S REEF CLEANUP — Highway and coastal cleanup at noon Aug. 25. Trash bag, gloves, purified water provided; bring hat, sunscreen, beach shoes. Meet at 61-529 Kamehameha Highway, Hale'iwa. See www.seaturtlesinternational.com or call 637-2211