A. Prevention Techniques. Generally, all pest management techniques must avoid disrupting natural pest controls present and aim to suppress the pest population, not eliminate it. In many cases, a portion of the pest population must remain to sustain natural enemies. The city’s first preference and most actively pursued method of pest and vegetation management on city property shall be the use of prevention techniques. Pest prevention techniques encourage the desired plants, animals, and other organisms and discourage unwanted ones. Prevention techniques and least toxic pest controls include:
1. Design and construction of indoor and outdoor areas to reduce the potential for pest habitats.
2. Good planting techniques, mulching, composting, irrigating, fertilizing, and use of native and pest-resistant plant species to avoid conditions where insects, undesirable plant species, disease and pests can develop into problem conditions.
3. Mechanical pest control techniques like hand pulling weeds, string trimming, flaming weeding (where practical and allowed), mowing, aeration and thatching, vacuum removal and hot water.
4. Increasing pest tolerance thresholds.
City staff shall continue to conduct and review research into alternative pest control methods to evaluate their effectiveness and potential for use on a city-wide scale.
B. Mechanical, Physical, and Other Alternative Pest Control Methods. To evaluate and address existing pest problems or problems that may develop on city property in spite of prevention techniques, all city departments shall follow the approach outlined below:
1. Monitor sites for optimal health and sanitation conditions.
2. Monitor populations of potential pests and their natural enemies to determine if and when control is needed.
3. Establish threshold levels of pests below which the population does not require control.
4. Use physical, mechanical, biological, and other alternative methods to keep pest numbers low enough to prevent intolerable damage or annoyance.
C. Use of Pesticides Products.
1. The city council shall adopt by resolution a least toxic products list for use by city staff.
2. Within six months after May 26, 2003, the city shall end all use of pesticides on city property or in city operations, with the exception of those on the least toxic products list adopted by resolution. The city council may periodically review the least toxic products list and, after receiving public comment, add products to that list that meet the criteria for least toxic pesticides in this chapter or delete products if new information becomes available indicating that the products do not meet those criteria. After the effective date of the ordinance codified in this chapter:
a. No routinely scheduled (i.e., monthly or weekly) pesticide applications shall be made by the city.
b. No pesticides shall be applied by the city within at least 100 feet (ground applications) and 200 feet (aerial applications) of a lake, stream, wetland, or groundwater recharge area; provided, that applications within 100 feet of a storm drain may be made in dry weather.
c. Insecticides containing least toxic products shall be used by the city only in containerized baits, or for spot treatments targeted to insect nests or problem areas where a minimal amount of material will be used.
D. Least Toxic Pesticide Criteria. Least toxic pesticides must meet all of the following criteria (all ingredients should be identified so that they can be screened using these tests):
1. Product contains no possible, probable, or known carcinogens:
a. Not classified as a known, likely, probable or possible carcinogen by the U.S. EPA;
b. Not classified as a known, likely, probable or possible carcinogen by the International Agency for Research on Cancer (IARC); and
c. Not listed by the state of California (Prop 65 list) or the National Toxicology Program as known or reasonably anticipated to be human carcinogen.
2. Product contains no reproductive toxicants (CA Prop 65 list).
3. Product contains no ingredients listed by Illinois EPA as known, probable, or suspect endocrine disruptors.
4. Active ingredient has soil half-life of 30 days or less (exception for minerals).
5. Active ingredient has extremely low or very low mobility in soils.
6. Product is not hazardous to fish or wildlife:
a. Not labeled as toxic to fish, birds, bees, wildlife, or domestic animals;
b. Not found in U.S. EPA Office of Pesticide Programs Reregistration Eligibility Decisions (REDs, IREDs and TREDs) to exceed a level of concern for fish, aquatic insects, aquatic and semi-aquatic plants, or wildlife; and
c. Product has not been detected in salmon waters at a level harmful to aquatic life.
7. Product is not acutely toxic to humans: product is not labeled as DANGER or POISON (toxicity Class I or II).
8. Product contains no nervous system toxicants (ingredients that are cholinesterase inhibitors and/or are listed as neurotoxic by the toxics release inventory).
9. Pesticide is not a restricted use pesticide.
E. Use of Chromated Copper Arsenate Treated Wood Products. The city and its contractors shall not purchase wood products treated with Chromated Copper Arsenate (CCA) preservatives for use by the city or for performance of work on city-owned property. (Ord. 2003-15 § 1, 2003)