Leaves are deciduous, alternate, simple, rhomboid usually but broadly ovate to elliptical as well, 4" long, serrated to doubly serrated, dark green upper surface, lighter green below. Nice venation pattern.
Alnus cordata perhaps. However the leaves are different and the size of the "cones" is different.
Soquel Drive but the address is likely Aptos Hills Lane.
Monterey Ave. across from the Monterey Ave Park
Soquel Creek - almost anywhere along the creek but easy to see on the walking bridge from Main St to the elementary school.